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openwrt/target/linux/bcm27xx/patches-5.15/950-0171-v4l2-Add-a-Greywor...

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From 8b666c067e3a52f960e0e6112451596d8b1c672f Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Fri, 6 Sep 2019 15:04:51 +0100
Subject: [PATCH] v4l2: Add a Greyworld AWB mode.
Adds a simple greyworld white balance preset, mainly for use
with cameras without an IR filter (eg Raspberry Pi NoIR)
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
drivers/media/v4l2-core/v4l2-ctrls.c | 5036 ++++++++++++++++++++++++++
include/uapi/linux/v4l2-controls.h | 1 +
2 files changed, 5037 insertions(+)
create mode 100644 drivers/media/v4l2-core/v4l2-ctrls.c
--- /dev/null
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -0,0 +1,5036 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ V4L2 controls framework implementation.
+
+ Copyright (C) 2010 Hans Verkuil <hverkuil@xs4all.nl>
+
+ */
+
+#define pr_fmt(fmt) "v4l2-ctrls: " fmt
+
+#include <linux/ctype.h>
+#include <linux/export.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-ioctl.h>
+
+#define dprintk(vdev, fmt, arg...) do { \
+ if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \
+ printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \
+ __func__, video_device_node_name(vdev), ##arg); \
+} while (0)
+
+#define has_op(master, op) \
+ (master->ops && master->ops->op)
+#define call_op(master, op) \
+ (has_op(master, op) ? master->ops->op(master) : 0)
+
+static const union v4l2_ctrl_ptr ptr_null;
+
+/* Internal temporary helper struct, one for each v4l2_ext_control */
+struct v4l2_ctrl_helper {
+ /* Pointer to the control reference of the master control */
+ struct v4l2_ctrl_ref *mref;
+ /* The control ref corresponding to the v4l2_ext_control ID field. */
+ struct v4l2_ctrl_ref *ref;
+ /* v4l2_ext_control index of the next control belonging to the
+ same cluster, or 0 if there isn't any. */
+ u32 next;
+};
+
+/* Small helper function to determine if the autocluster is set to manual
+ mode. */
+static bool is_cur_manual(const struct v4l2_ctrl *master)
+{
+ return master->is_auto && master->cur.val == master->manual_mode_value;
+}
+
+/* Same as above, but this checks the against the new value instead of the
+ current value. */
+static bool is_new_manual(const struct v4l2_ctrl *master)
+{
+ return master->is_auto && master->val == master->manual_mode_value;
+}
+
+/* Returns NULL or a character pointer array containing the menu for
+ the given control ID. The pointer array ends with a NULL pointer.
+ An empty string signifies a menu entry that is invalid. This allows
+ drivers to disable certain options if it is not supported. */
+const char * const *v4l2_ctrl_get_menu(u32 id)
+{
+ static const char * const mpeg_audio_sampling_freq[] = {
+ "44.1 kHz",
+ "48 kHz",
+ "32 kHz",
+ NULL
+ };
+ static const char * const mpeg_audio_encoding[] = {
+ "MPEG-1/2 Layer I",
+ "MPEG-1/2 Layer II",
+ "MPEG-1/2 Layer III",
+ "MPEG-2/4 AAC",
+ "AC-3",
+ NULL
+ };
+ static const char * const mpeg_audio_l1_bitrate[] = {
+ "32 kbps",
+ "64 kbps",
+ "96 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "288 kbps",
+ "320 kbps",
+ "352 kbps",
+ "384 kbps",
+ "416 kbps",
+ "448 kbps",
+ NULL
+ };
+ static const char * const mpeg_audio_l2_bitrate[] = {
+ "32 kbps",
+ "48 kbps",
+ "56 kbps",
+ "64 kbps",
+ "80 kbps",
+ "96 kbps",
+ "112 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "320 kbps",
+ "384 kbps",
+ NULL
+ };
+ static const char * const mpeg_audio_l3_bitrate[] = {
+ "32 kbps",
+ "40 kbps",
+ "48 kbps",
+ "56 kbps",
+ "64 kbps",
+ "80 kbps",
+ "96 kbps",
+ "112 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "320 kbps",
+ NULL
+ };
+ static const char * const mpeg_audio_ac3_bitrate[] = {
+ "32 kbps",
+ "40 kbps",
+ "48 kbps",
+ "56 kbps",
+ "64 kbps",
+ "80 kbps",
+ "96 kbps",
+ "112 kbps",
+ "128 kbps",
+ "160 kbps",
+ "192 kbps",
+ "224 kbps",
+ "256 kbps",
+ "320 kbps",
+ "384 kbps",
+ "448 kbps",
+ "512 kbps",
+ "576 kbps",
+ "640 kbps",
+ NULL
+ };
+ static const char * const mpeg_audio_mode[] = {
+ "Stereo",
+ "Joint Stereo",
+ "Dual",
+ "Mono",
+ NULL
+ };
+ static const char * const mpeg_audio_mode_extension[] = {
+ "Bound 4",
+ "Bound 8",
+ "Bound 12",
+ "Bound 16",
+ NULL
+ };
+ static const char * const mpeg_audio_emphasis[] = {
+ "No Emphasis",
+ "50/15 us",
+ "CCITT J17",
+ NULL
+ };
+ static const char * const mpeg_audio_crc[] = {
+ "No CRC",
+ "16-bit CRC",
+ NULL
+ };
+ static const char * const mpeg_audio_dec_playback[] = {
+ "Auto",
+ "Stereo",
+ "Left",
+ "Right",
+ "Mono",
+ "Swapped Stereo",
+ NULL
+ };
+ static const char * const mpeg_video_encoding[] = {
+ "MPEG-1",
+ "MPEG-2",
+ "MPEG-4 AVC",
+ NULL
+ };
+ static const char * const mpeg_video_aspect[] = {
+ "1x1",
+ "4x3",
+ "16x9",
+ "2.21x1",
+ NULL
+ };
+ static const char * const mpeg_video_bitrate_mode[] = {
+ "Variable Bitrate",
+ "Constant Bitrate",
+ "Constant Quality",
+ NULL
+ };
+ static const char * const mpeg_stream_type[] = {
+ "MPEG-2 Program Stream",
+ "MPEG-2 Transport Stream",
+ "MPEG-1 System Stream",
+ "MPEG-2 DVD-compatible Stream",
+ "MPEG-1 VCD-compatible Stream",
+ "MPEG-2 SVCD-compatible Stream",
+ NULL
+ };
+ static const char * const mpeg_stream_vbi_fmt[] = {
+ "No VBI",
+ "Private Packet, IVTV Format",
+ NULL
+ };
+ static const char * const camera_power_line_frequency[] = {
+ "Disabled",
+ "50 Hz",
+ "60 Hz",
+ "Auto",
+ NULL
+ };
+ static const char * const camera_exposure_auto[] = {
+ "Auto Mode",
+ "Manual Mode",
+ "Shutter Priority Mode",
+ "Aperture Priority Mode",
+ NULL
+ };
+ static const char * const camera_exposure_metering[] = {
+ "Average",
+ "Center Weighted",
+ "Spot",
+ "Matrix",
+ NULL
+ };
+ static const char * const camera_auto_focus_range[] = {
+ "Auto",
+ "Normal",
+ "Macro",
+ "Infinity",
+ NULL
+ };
+ static const char * const colorfx[] = {
+ "None",
+ "Black & White",
+ "Sepia",
+ "Negative",
+ "Emboss",
+ "Sketch",
+ "Sky Blue",
+ "Grass Green",
+ "Skin Whiten",
+ "Vivid",
+ "Aqua",
+ "Art Freeze",
+ "Silhouette",
+ "Solarization",
+ "Antique",
+ "Set Cb/Cr",
+ NULL
+ };
+ static const char * const auto_n_preset_white_balance[] = {
+ "Manual",
+ "Auto",
+ "Incandescent",
+ "Fluorescent",
+ "Fluorescent H",
+ "Horizon",
+ "Daylight",
+ "Flash",
+ "Cloudy",
+ "Shade",
+ "Greyworld",
+ NULL,
+ };
+ static const char * const camera_iso_sensitivity_auto[] = {
+ "Manual",
+ "Auto",
+ NULL
+ };
+ static const char * const scene_mode[] = {
+ "None",
+ "Backlight",
+ "Beach/Snow",
+ "Candle Light",
+ "Dusk/Dawn",
+ "Fall Colors",
+ "Fireworks",
+ "Landscape",
+ "Night",
+ "Party/Indoor",
+ "Portrait",
+ "Sports",
+ "Sunset",
+ "Text",
+ NULL
+ };
+ static const char * const tune_emphasis[] = {
+ "None",
+ "50 Microseconds",
+ "75 Microseconds",
+ NULL,
+ };
+ static const char * const header_mode[] = {
+ "Separate Buffer",
+ "Joined With 1st Frame",
+ NULL,
+ };
+ static const char * const multi_slice[] = {
+ "Single",
+ "Max Macroblocks",
+ "Max Bytes",
+ NULL,
+ };
+ static const char * const entropy_mode[] = {
+ "CAVLC",
+ "CABAC",
+ NULL,
+ };
+ static const char * const mpeg_h264_level[] = {
+ "1",
+ "1b",
+ "1.1",
+ "1.2",
+ "1.3",
+ "2",
+ "2.1",
+ "2.2",
+ "3",
+ "3.1",
+ "3.2",
+ "4",
+ "4.1",
+ "4.2",
+ "5",
+ "5.1",
+ "5.2",
+ "6.0",
+ "6.1",
+ "6.2",
+ NULL,
+ };
+ static const char * const h264_loop_filter[] = {
+ "Enabled",
+ "Disabled",
+ "Disabled at Slice Boundary",
+ NULL,
+ };
+ static const char * const h264_profile[] = {
+ "Baseline",
+ "Constrained Baseline",
+ "Main",
+ "Extended",
+ "High",
+ "High 10",
+ "High 422",
+ "High 444 Predictive",
+ "High 10 Intra",
+ "High 422 Intra",
+ "High 444 Intra",
+ "CAVLC 444 Intra",
+ "Scalable Baseline",
+ "Scalable High",
+ "Scalable High Intra",
+ "Stereo High",
+ "Multiview High",
+ "Constrained High",
+ NULL,
+ };
+ static const char * const vui_sar_idc[] = {
+ "Unspecified",
+ "1:1",
+ "12:11",
+ "10:11",
+ "16:11",
+ "40:33",
+ "24:11",
+ "20:11",
+ "32:11",
+ "80:33",
+ "18:11",
+ "15:11",
+ "64:33",
+ "160:99",
+ "4:3",
+ "3:2",
+ "2:1",
+ "Extended SAR",
+ NULL,
+ };
+ static const char * const h264_fp_arrangement_type[] = {
+ "Checkerboard",
+ "Column",
+ "Row",
+ "Side by Side",
+ "Top Bottom",
+ "Temporal",
+ NULL,
+ };
+ static const char * const h264_fmo_map_type[] = {
+ "Interleaved Slices",
+ "Scattered Slices",
+ "Foreground with Leftover",
+ "Box Out",
+ "Raster Scan",
+ "Wipe Scan",
+ "Explicit",
+ NULL,
+ };
+ static const char * const h264_decode_mode[] = {
+ "Slice-Based",
+ "Frame-Based",
+ NULL,
+ };
+ static const char * const h264_start_code[] = {
+ "No Start Code",
+ "Annex B Start Code",
+ NULL,
+ };
+ static const char * const h264_hierarchical_coding_type[] = {
+ "Hier Coding B",
+ "Hier Coding P",
+ NULL,
+ };
+ static const char * const mpeg_mpeg2_level[] = {
+ "Low",
+ "Main",
+ "High 1440",
+ "High",
+ NULL,
+ };
+ static const char * const mpeg2_profile[] = {
+ "Simple",
+ "Main",
+ "SNR Scalable",
+ "Spatially Scalable",
+ "High",
+ NULL,
+ };
+ static const char * const mpeg_mpeg4_level[] = {
+ "0",
+ "0b",
+ "1",
+ "2",
+ "3",
+ "3b",
+ "4",
+ "5",
+ NULL,
+ };
+ static const char * const mpeg4_profile[] = {
+ "Simple",
+ "Advanced Simple",
+ "Core",
+ "Simple Scalable",
+ "Advanced Coding Efficiency",
+ NULL,
+ };
+
+ static const char * const vpx_golden_frame_sel[] = {
+ "Use Previous Frame",
+ "Use Previous Specific Frame",
+ NULL,
+ };
+ static const char * const vp8_profile[] = {
+ "0",
+ "1",
+ "2",
+ "3",
+ NULL,
+ };
+ static const char * const vp9_profile[] = {
+ "0",
+ "1",
+ "2",
+ "3",
+ NULL,
+ };
+ static const char * const vp9_level[] = {
+ "1",
+ "1.1",
+ "2",
+ "2.1",
+ "3",
+ "3.1",
+ "4",
+ "4.1",
+ "5",
+ "5.1",
+ "5.2",
+ "6",
+ "6.1",
+ "6.2",
+ NULL,
+ };
+
+ static const char * const flash_led_mode[] = {
+ "Off",
+ "Flash",
+ "Torch",
+ NULL,
+ };
+ static const char * const flash_strobe_source[] = {
+ "Software",
+ "External",
+ NULL,
+ };
+
+ static const char * const jpeg_chroma_subsampling[] = {
+ "4:4:4",
+ "4:2:2",
+ "4:2:0",
+ "4:1:1",
+ "4:1:0",
+ "Gray",
+ NULL,
+ };
+ static const char * const dv_tx_mode[] = {
+ "DVI-D",
+ "HDMI",
+ NULL,
+ };
+ static const char * const dv_rgb_range[] = {
+ "Automatic",
+ "RGB Limited Range (16-235)",
+ "RGB Full Range (0-255)",
+ NULL,
+ };
+ static const char * const dv_it_content_type[] = {
+ "Graphics",
+ "Photo",
+ "Cinema",
+ "Game",
+ "No IT Content",
+ NULL,
+ };
+ static const char * const detect_md_mode[] = {
+ "Disabled",
+ "Global",
+ "Threshold Grid",
+ "Region Grid",
+ NULL,
+ };
+
+ static const char * const hevc_profile[] = {
+ "Main",
+ "Main Still Picture",
+ "Main 10",
+ NULL,
+ };
+ static const char * const hevc_level[] = {
+ "1",
+ "2",
+ "2.1",
+ "3",
+ "3.1",
+ "4",
+ "4.1",
+ "5",
+ "5.1",
+ "5.2",
+ "6",
+ "6.1",
+ "6.2",
+ NULL,
+ };
+ static const char * const hevc_hierarchial_coding_type[] = {
+ "B",
+ "P",
+ NULL,
+ };
+ static const char * const hevc_refresh_type[] = {
+ "None",
+ "CRA",
+ "IDR",
+ NULL,
+ };
+ static const char * const hevc_size_of_length_field[] = {
+ "0",
+ "1",
+ "2",
+ "4",
+ NULL,
+ };
+ static const char * const hevc_tier[] = {
+ "Main",
+ "High",
+ NULL,
+ };
+ static const char * const hevc_loop_filter_mode[] = {
+ "Disabled",
+ "Enabled",
+ "Disabled at slice boundary",
+ "NULL",
+ };
+ static const char * const hevc_decode_mode[] = {
+ "Slice-Based",
+ "Frame-Based",
+ NULL,
+ };
+ static const char * const hevc_start_code[] = {
+ "No Start Code",
+ "Annex B Start Code",
+ NULL,
+ };
+ static const char * const camera_orientation[] = {
+ "Front",
+ "Back",
+ "External",
+ NULL,
+ };
+ static const char * const mpeg_video_frame_skip[] = {
+ "Disabled",
+ "Level Limit",
+ "VBV/CPB Limit",
+ NULL,
+ };
+
+ switch (id) {
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ return mpeg_audio_sampling_freq;
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ return mpeg_audio_encoding;
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+ return mpeg_audio_l1_bitrate;
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ return mpeg_audio_l2_bitrate;
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+ return mpeg_audio_l3_bitrate;
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ return mpeg_audio_ac3_bitrate;
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ return mpeg_audio_mode;
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+ return mpeg_audio_mode_extension;
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+ return mpeg_audio_emphasis;
+ case V4L2_CID_MPEG_AUDIO_CRC:
+ return mpeg_audio_crc;
+ case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
+ case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
+ return mpeg_audio_dec_playback;
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ return mpeg_video_encoding;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ return mpeg_video_aspect;
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ return mpeg_video_bitrate_mode;
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ return mpeg_stream_type;
+ case V4L2_CID_MPEG_STREAM_VBI_FMT:
+ return mpeg_stream_vbi_fmt;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ return camera_power_line_frequency;
+ case V4L2_CID_EXPOSURE_AUTO:
+ return camera_exposure_auto;
+ case V4L2_CID_EXPOSURE_METERING:
+ return camera_exposure_metering;
+ case V4L2_CID_AUTO_FOCUS_RANGE:
+ return camera_auto_focus_range;
+ case V4L2_CID_COLORFX:
+ return colorfx;
+ case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
+ return auto_n_preset_white_balance;
+ case V4L2_CID_ISO_SENSITIVITY_AUTO:
+ return camera_iso_sensitivity_auto;
+ case V4L2_CID_SCENE_MODE:
+ return scene_mode;
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ return tune_emphasis;
+ case V4L2_CID_TUNE_DEEMPHASIS:
+ return tune_emphasis;
+ case V4L2_CID_FLASH_LED_MODE:
+ return flash_led_mode;
+ case V4L2_CID_FLASH_STROBE_SOURCE:
+ return flash_strobe_source;
+ case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
+ return header_mode;
+ case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
+ return mpeg_video_frame_skip;
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
+ return multi_slice;
+ case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
+ return entropy_mode;
+ case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
+ return mpeg_h264_level;
+ case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
+ return h264_loop_filter;
+ case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
+ return h264_profile;
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
+ return vui_sar_idc;
+ case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
+ return h264_fp_arrangement_type;
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
+ return h264_fmo_map_type;
+ case V4L2_CID_STATELESS_H264_DECODE_MODE:
+ return h264_decode_mode;
+ case V4L2_CID_STATELESS_H264_START_CODE:
+ return h264_start_code;
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
+ return h264_hierarchical_coding_type;
+ case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
+ return mpeg_mpeg2_level;
+ case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
+ return mpeg2_profile;
+ case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
+ return mpeg_mpeg4_level;
+ case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
+ return mpeg4_profile;
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
+ return vpx_golden_frame_sel;
+ case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
+ return vp8_profile;
+ case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
+ return vp9_profile;
+ case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
+ return vp9_level;
+ case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
+ return jpeg_chroma_subsampling;
+ case V4L2_CID_DV_TX_MODE:
+ return dv_tx_mode;
+ case V4L2_CID_DV_TX_RGB_RANGE:
+ case V4L2_CID_DV_RX_RGB_RANGE:
+ return dv_rgb_range;
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+ return dv_it_content_type;
+ case V4L2_CID_DETECT_MD_MODE:
+ return detect_md_mode;
+ case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
+ return hevc_profile;
+ case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
+ return hevc_level;
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
+ return hevc_hierarchial_coding_type;
+ case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
+ return hevc_refresh_type;
+ case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
+ return hevc_size_of_length_field;
+ case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
+ return hevc_tier;
+ case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
+ return hevc_loop_filter_mode;
+ case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
+ return hevc_decode_mode;
+ case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
+ return hevc_start_code;
+ case V4L2_CID_CAMERA_ORIENTATION:
+ return camera_orientation;
+ default:
+ return NULL;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_get_menu);
+
+#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; })
+/*
+ * Returns NULL or an s64 type array containing the menu for given
+ * control ID. The total number of the menu items is returned in @len.
+ */
+const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len)
+{
+ static const s64 qmenu_int_vpx_num_partitions[] = {
+ 1, 2, 4, 8,
+ };
+
+ static const s64 qmenu_int_vpx_num_ref_frames[] = {
+ 1, 2, 3,
+ };
+
+ switch (id) {
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+ return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len);
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
+ return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len);
+ default:
+ *len = 0;
+ return NULL;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_get_int_menu);
+
+/* Return the control name. */
+const char *v4l2_ctrl_get_name(u32 id)
+{
+ switch (id) {
+ /* USER controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_USER_CLASS: return "User Controls";
+ case V4L2_CID_BRIGHTNESS: return "Brightness";
+ case V4L2_CID_CONTRAST: return "Contrast";
+ case V4L2_CID_SATURATION: return "Saturation";
+ case V4L2_CID_HUE: return "Hue";
+ case V4L2_CID_AUDIO_VOLUME: return "Volume";
+ case V4L2_CID_AUDIO_BALANCE: return "Balance";
+ case V4L2_CID_AUDIO_BASS: return "Bass";
+ case V4L2_CID_AUDIO_TREBLE: return "Treble";
+ case V4L2_CID_AUDIO_MUTE: return "Mute";
+ case V4L2_CID_AUDIO_LOUDNESS: return "Loudness";
+ case V4L2_CID_BLACK_LEVEL: return "Black Level";
+ case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic";
+ case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance";
+ case V4L2_CID_RED_BALANCE: return "Red Balance";
+ case V4L2_CID_BLUE_BALANCE: return "Blue Balance";
+ case V4L2_CID_GAMMA: return "Gamma";
+ case V4L2_CID_EXPOSURE: return "Exposure";
+ case V4L2_CID_AUTOGAIN: return "Gain, Automatic";
+ case V4L2_CID_GAIN: return "Gain";
+ case V4L2_CID_HFLIP: return "Horizontal Flip";
+ case V4L2_CID_VFLIP: return "Vertical Flip";
+ case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency";
+ case V4L2_CID_HUE_AUTO: return "Hue, Automatic";
+ case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
+ case V4L2_CID_SHARPNESS: return "Sharpness";
+ case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation";
+ case V4L2_CID_CHROMA_AGC: return "Chroma AGC";
+ case V4L2_CID_COLOR_KILLER: return "Color Killer";
+ case V4L2_CID_COLORFX: return "Color Effects";
+ case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic";
+ case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter";
+ case V4L2_CID_ROTATE: return "Rotate";
+ case V4L2_CID_BG_COLOR: return "Background Color";
+ case V4L2_CID_CHROMA_GAIN: return "Chroma Gain";
+ case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1";
+ case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2";
+ case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers";
+ case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers";
+ case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component";
+ case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr";
+
+ /* Codec controls */
+ /* The MPEG controls are applicable to all codec controls
+ * and the 'MPEG' part of the define is historical */
+ /* Keep the order of the 'case's the same as in videodev2.h! */
+ case V4L2_CID_CODEC_CLASS: return "Codec Controls";
+ case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type";
+ case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID";
+ case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID";
+ case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID";
+ case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID";
+ case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
+ case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
+ case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format";
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
+ case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding";
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate";
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate";
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate";
+ case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode";
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis";
+ case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC";
+ case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute";
+ case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate";
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate";
+ case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback";
+ case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback";
+ case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding";
+ case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect";
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames";
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size";
+ case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure";
+ case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown";
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode";
+ case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality";
+ case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate";
+ case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate";
+ case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
+ case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute";
+ case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV";
+ case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface";
+ case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable";
+ case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs";
+ case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable";
+ case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control";
+ case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode";
+ case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics";
+ case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: return "Frame Skip Mode";
+ case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY: return "Display Delay";
+ case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE: return "Display Delay Enable";
+ case V4L2_CID_MPEG_VIDEO_AU_DELIMITER: return "Generate Access Unit Delimiters";
+ case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable";
+ case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size";
+ case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode";
+ case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period";
+ case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level";
+ case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset";
+ case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset";
+ case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode";
+ case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile";
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR";
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR";
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable";
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC";
+ case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI";
+ case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0";
+ case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp";
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs";
+ case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering";
+ case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order";
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding";
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type";
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers";
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP:
+ return "H264 Set QP Value for HC Layers";
+ case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
+ return "H264 Constrained Intra Pred";
+ case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET: return "H264 Chroma QP Index Offset";
+ case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP: return "H264 I-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP: return "H264 I-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP: return "H264 P-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP: return "H264 P-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP: return "H264 B-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP: return "H264 B-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR: return "H264 Hierarchical Lay 0 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR: return "H264 Hierarchical Lay 1 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR: return "H264 Hierarchical Lay 2 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR: return "H264 Hierarchical Lay 3 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR: return "H264 Hierarchical Lay 4 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR: return "H264 Hierarchical Lay 5 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR: return "H264 Hierarchical Lay 6 Bitrate";
+ case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: return "MPEG2 Level";
+ case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: return "MPEG2 Profile";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile";
+ case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable";
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice";
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice";
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method";
+ case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size";
+ case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS";
+ case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count";
+ case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR: return "Video Decoder Conceal Color";
+ case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control";
+ case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: return "Horizontal MV Search Range";
+ case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range";
+ case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header";
+ case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame";
+ case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID: return "Base Layer Priority ID";
+ case V4L2_CID_MPEG_VIDEO_LTR_COUNT: return "LTR Count";
+ case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Frame LTR Index";
+ case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: return "Use LTR Frames";
+ case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS: return "MPEG-2 Slice Parameters";
+ case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION: return "MPEG-2 Quantization Matrices";
+ case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value";
+ case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value";
+
+ /* VPX controls */
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions";
+ case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable";
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame";
+ case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range";
+ case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control";
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period";
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator";
+ case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP: return "VPX Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP: return "VPX Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP: return "VPX I-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: return "VP8 Profile";
+ case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: return "VP9 Profile";
+ case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: return "VP9 Level";
+
+ /* HEVC controls */
+ case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP: return "HEVC I-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP: return "HEVC P-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP: return "HEVC B-Frame QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP: return "HEVC Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP: return "HEVC Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP: return "HEVC I-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP: return "HEVC I-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP: return "HEVC P-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP: return "HEVC P-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP: return "HEVC B-Frame Minimum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP: return "HEVC B-Frame Maximum QP Value";
+ case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: return "HEVC Profile";
+ case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: return "HEVC Level";
+ case V4L2_CID_MPEG_VIDEO_HEVC_TIER: return "HEVC Tier";
+ case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION: return "HEVC Frame Rate Resolution";
+ case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH: return "HEVC Maximum Coding Unit Depth";
+ case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: return "HEVC Refresh Type";
+ case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED: return "HEVC Constant Intra Prediction";
+ case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU: return "HEVC Lossless Encoding";
+ case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT: return "HEVC Wavefront";
+ case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: return "HEVC Loop Filter";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP: return "HEVC QP Values";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: return "HEVC Hierarchical Coding Type";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER: return "HEVC Hierarchical Coding Layer";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP: return "HEVC Hierarchical Layer 0 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP: return "HEVC Hierarchical Layer 1 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP: return "HEVC Hierarchical Layer 2 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP: return "HEVC Hierarchical Layer 3 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP: return "HEVC Hierarchical Layer 4 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP: return "HEVC Hierarchical Layer 5 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP: return "HEVC Hierarchical Layer 6 QP";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR: return "HEVC Hierarchical Lay 0 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR: return "HEVC Hierarchical Lay 1 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR: return "HEVC Hierarchical Lay 2 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR: return "HEVC Hierarchical Lay 3 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR: return "HEVC Hierarchical Lay 4 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR: return "HEVC Hierarchical Lay 5 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR: return "HEVC Hierarchical Lay 6 BitRate";
+ case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB: return "HEVC General PB";
+ case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID: return "HEVC Temporal ID";
+ case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING: return "HEVC Strong Intra Smoothing";
+ case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT: return "HEVC Intra PU Split";
+ case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION: return "HEVC TMV Prediction";
+ case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1: return "HEVC Max Num of Candidate MVs";
+ case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE: return "HEVC ENC Without Startcode";
+ case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD: return "HEVC Num of I-Frame b/w 2 IDR";
+ case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2: return "HEVC Loop Filter Beta Offset";
+ case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2: return "HEVC Loop Filter TC Offset";
+ case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: return "HEVC Size of Length Field";
+ case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES: return "Reference Frames for a P-Frame";
+ case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR: return "Prepend SPS and PPS to IDR";
+ case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set";
+ case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set";
+ case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters";
+ case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode";
+ case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code";
+
+ /* CAMERA controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_CAMERA_CLASS: return "Camera Controls";
+ case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure";
+ case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute";
+ case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate";
+ case V4L2_CID_PAN_RELATIVE: return "Pan, Relative";
+ case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative";
+ case V4L2_CID_PAN_RESET: return "Pan, Reset";
+ case V4L2_CID_TILT_RESET: return "Tilt, Reset";
+ case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute";
+ case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute";
+ case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute";
+ case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative";
+ case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous";
+ case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute";
+ case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative";
+ case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous";
+ case V4L2_CID_PRIVACY: return "Privacy";
+ case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute";
+ case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative";
+ case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias";
+ case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset";
+ case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range";
+ case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization";
+ case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity";
+ case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto";
+ case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode";
+ case V4L2_CID_SCENE_MODE: return "Scene Mode";
+ case V4L2_CID_3A_LOCK: return "3A Lock";
+ case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start";
+ case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop";
+ case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status";
+ case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range";
+ case V4L2_CID_PAN_SPEED: return "Pan, Speed";
+ case V4L2_CID_TILT_SPEED: return "Tilt, Speed";
+ case V4L2_CID_UNIT_CELL_SIZE: return "Unit Cell Size";
+ case V4L2_CID_CAMERA_ORIENTATION: return "Camera Orientation";
+ case V4L2_CID_CAMERA_SENSOR_ROTATION: return "Camera Sensor Rotation";
+
+ /* FM Radio Modulator controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls";
+ case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation";
+ case V4L2_CID_RDS_TX_PI: return "RDS Program ID";
+ case V4L2_CID_RDS_TX_PTY: return "RDS Program Type";
+ case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name";
+ case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text";
+ case V4L2_CID_RDS_TX_MONO_STEREO: return "RDS Stereo";
+ case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: return "RDS Artificial Head";
+ case V4L2_CID_RDS_TX_COMPRESSED: return "RDS Compressed";
+ case V4L2_CID_RDS_TX_DYNAMIC_PTY: return "RDS Dynamic PTY";
+ case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
+ case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: return "RDS Traffic Program";
+ case V4L2_CID_RDS_TX_MUSIC_SPEECH: return "RDS Music";
+ case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: return "RDS Enable Alt Frequencies";
+ case V4L2_CID_RDS_TX_ALT_FREQS: return "RDS Alternate Frequencies";
+ case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled";
+ case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
+ case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation";
+ case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
+ case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain";
+ case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
+ case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
+ case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
+ case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled";
+ case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation";
+ case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency";
+ case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis";
+ case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level";
+ case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor";
+
+ /* Flash controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_FLASH_CLASS: return "Flash Controls";
+ case V4L2_CID_FLASH_LED_MODE: return "LED Mode";
+ case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source";
+ case V4L2_CID_FLASH_STROBE: return "Strobe";
+ case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe";
+ case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status";
+ case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout";
+ case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode";
+ case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode";
+ case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
+ case V4L2_CID_FLASH_FAULT: return "Faults";
+ case V4L2_CID_FLASH_CHARGE: return "Charge";
+ case V4L2_CID_FLASH_READY: return "Ready to Strobe";
+
+ /* JPEG encoder controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls";
+ case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling";
+ case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval";
+ case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality";
+ case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers";
+
+ /* Image source controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls";
+ case V4L2_CID_VBLANK: return "Vertical Blanking";
+ case V4L2_CID_HBLANK: return "Horizontal Blanking";
+ case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain";
+ case V4L2_CID_TEST_PATTERN_RED: return "Red Pixel Value";
+ case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value";
+ case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value";
+ case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value";
+
+ /* Image processing controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls";
+ case V4L2_CID_LINK_FREQ: return "Link Frequency";
+ case V4L2_CID_PIXEL_RATE: return "Pixel Rate";
+ case V4L2_CID_TEST_PATTERN: return "Test Pattern";
+ case V4L2_CID_DEINTERLACING_MODE: return "Deinterlacing Mode";
+ case V4L2_CID_DIGITAL_GAIN: return "Digital Gain";
+
+ /* DV controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_DV_CLASS: return "Digital Video Controls";
+ case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present";
+ case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present";
+ case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present";
+ case V4L2_CID_DV_TX_MODE: return "Transmit Mode";
+ case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range";
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type";
+ case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present";
+ case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range";
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type";
+
+ case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls";
+ case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis";
+ case V4L2_CID_RDS_RECEPTION: return "RDS Reception";
+ case V4L2_CID_RF_TUNER_CLASS: return "RF Tuner Controls";
+ case V4L2_CID_RF_TUNER_RF_GAIN: return "RF Gain";
+ case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: return "LNA Gain, Auto";
+ case V4L2_CID_RF_TUNER_LNA_GAIN: return "LNA Gain";
+ case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: return "Mixer Gain, Auto";
+ case V4L2_CID_RF_TUNER_MIXER_GAIN: return "Mixer Gain";
+ case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: return "IF Gain, Auto";
+ case V4L2_CID_RF_TUNER_IF_GAIN: return "IF Gain";
+ case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: return "Bandwidth, Auto";
+ case V4L2_CID_RF_TUNER_BANDWIDTH: return "Bandwidth";
+ case V4L2_CID_RF_TUNER_PLL_LOCK: return "PLL Lock";
+ case V4L2_CID_RDS_RX_PTY: return "RDS Program Type";
+ case V4L2_CID_RDS_RX_PS_NAME: return "RDS PS Name";
+ case V4L2_CID_RDS_RX_RADIO_TEXT: return "RDS Radio Text";
+ case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
+ case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: return "RDS Traffic Program";
+ case V4L2_CID_RDS_RX_MUSIC_SPEECH: return "RDS Music";
+
+ /* Detection controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_DETECT_CLASS: return "Detection Controls";
+ case V4L2_CID_DETECT_MD_MODE: return "Motion Detection Mode";
+ case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold";
+ case V4L2_CID_DETECT_MD_THRESHOLD_GRID: return "MD Threshold Grid";
+ case V4L2_CID_DETECT_MD_REGION_GRID: return "MD Region Grid";
+
+ /* Stateless Codec controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_CODEC_STATELESS_CLASS: return "Stateless Codec Controls";
+ case V4L2_CID_STATELESS_H264_DECODE_MODE: return "H264 Decode Mode";
+ case V4L2_CID_STATELESS_H264_START_CODE: return "H264 Start Code";
+ case V4L2_CID_STATELESS_H264_SPS: return "H264 Sequence Parameter Set";
+ case V4L2_CID_STATELESS_H264_PPS: return "H264 Picture Parameter Set";
+ case V4L2_CID_STATELESS_H264_SCALING_MATRIX: return "H264 Scaling Matrix";
+ case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: return "H264 Prediction Weight Table";
+ case V4L2_CID_STATELESS_H264_SLICE_PARAMS: return "H264 Slice Parameters";
+ case V4L2_CID_STATELESS_H264_DECODE_PARAMS: return "H264 Decode Parameters";
+ case V4L2_CID_STATELESS_FWHT_PARAMS: return "FWHT Stateless Parameters";
+ case V4L2_CID_STATELESS_VP8_FRAME: return "VP8 Frame Parameters";
+
+ /* Colorimetry controls */
+ /* Keep the order of the 'case's the same as in v4l2-controls.h! */
+ case V4L2_CID_COLORIMETRY_CLASS: return "Colorimetry Controls";
+ case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO: return "HDR10 Content Light Info";
+ case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: return "HDR10 Mastering Display";
+ default:
+ return NULL;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_get_name);
+
+void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
+ s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags)
+{
+ *name = v4l2_ctrl_get_name(id);
+ *flags = 0;
+
+ switch (id) {
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ case V4L2_CID_AUTOGAIN:
+ case V4L2_CID_HFLIP:
+ case V4L2_CID_VFLIP:
+ case V4L2_CID_HUE_AUTO:
+ case V4L2_CID_CHROMA_AGC:
+ case V4L2_CID_COLOR_KILLER:
+ case V4L2_CID_AUTOBRIGHTNESS:
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ case V4L2_CID_MPEG_VIDEO_MUTE:
+ case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
+ case V4L2_CID_MPEG_VIDEO_PULLDOWN:
+ case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
+ case V4L2_CID_FOCUS_AUTO:
+ case V4L2_CID_PRIVACY:
+ case V4L2_CID_AUDIO_LIMITER_ENABLED:
+ case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
+ case V4L2_CID_PILOT_TONE_ENABLED:
+ case V4L2_CID_ILLUMINATORS_1:
+ case V4L2_CID_ILLUMINATORS_2:
+ case V4L2_CID_FLASH_STROBE_STATUS:
+ case V4L2_CID_FLASH_CHARGE:
+ case V4L2_CID_FLASH_READY:
+ case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
+ case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
+ case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
+ case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
+ case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
+ case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
+ case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
+ case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:
+ case V4L2_CID_MPEG_VIDEO_AU_DELIMITER:
+ case V4L2_CID_WIDE_DYNAMIC_RANGE:
+ case V4L2_CID_IMAGE_STABILIZATION:
+ case V4L2_CID_RDS_RECEPTION:
+ case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
+ case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
+ case V4L2_CID_RF_TUNER_PLL_LOCK:
+ case V4L2_CID_RDS_TX_MONO_STEREO:
+ case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
+ case V4L2_CID_RDS_TX_COMPRESSED:
+ case V4L2_CID_RDS_TX_DYNAMIC_PTY:
+ case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
+ case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
+ case V4L2_CID_RDS_TX_MUSIC_SPEECH:
+ case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
+ case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
+ case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
+ case V4L2_CID_RDS_RX_MUSIC_SPEECH:
+ *type = V4L2_CTRL_TYPE_BOOLEAN;
+ *min = 0;
+ *max = *step = 1;
+ break;
+ case V4L2_CID_ROTATE:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:
+ case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
+ case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ break;
+ case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ break;
+ case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ break;
+ case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
+ *type = V4L2_CTRL_TYPE_BITMASK;
+ *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ break;
+ case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
+ case V4L2_CID_PAN_RESET:
+ case V4L2_CID_TILT_RESET:
+ case V4L2_CID_FLASH_STROBE:
+ case V4L2_CID_FLASH_STROBE_STOP:
+ case V4L2_CID_AUTO_FOCUS_START:
+ case V4L2_CID_AUTO_FOCUS_STOP:
+ case V4L2_CID_DO_WHITE_BALANCE:
+ *type = V4L2_CTRL_TYPE_BUTTON;
+ *flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+ V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ *min = *max = *step = *def = 0;
+ break;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
+ case V4L2_CID_MPEG_AUDIO_EMPHASIS:
+ case V4L2_CID_MPEG_AUDIO_CRC:
+ case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
+ case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
+ case V4L2_CID_MPEG_VIDEO_ENCODING:
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ case V4L2_CID_MPEG_STREAM_VBI_FMT:
+ case V4L2_CID_EXPOSURE_AUTO:
+ case V4L2_CID_AUTO_FOCUS_RANGE:
+ case V4L2_CID_COLORFX:
+ case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
+ case V4L2_CID_TUNE_PREEMPHASIS:
+ case V4L2_CID_FLASH_LED_MODE:
+ case V4L2_CID_FLASH_STROBE_SOURCE:
+ case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
+ case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
+ case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
+ case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
+ case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
+ case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
+ case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
+ case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
+ case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
+ case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE:
+ case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
+ case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
+ case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
+ case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
+ case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
+ case V4L2_CID_ISO_SENSITIVITY_AUTO:
+ case V4L2_CID_EXPOSURE_METERING:
+ case V4L2_CID_SCENE_MODE:
+ case V4L2_CID_DV_TX_MODE:
+ case V4L2_CID_DV_TX_RGB_RANGE:
+ case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
+ case V4L2_CID_DV_RX_RGB_RANGE:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+ case V4L2_CID_TEST_PATTERN:
+ case V4L2_CID_DEINTERLACING_MODE:
+ case V4L2_CID_TUNE_DEEMPHASIS:
+ case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
+ case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
+ case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
+ case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
+ case V4L2_CID_DETECT_MD_MODE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
+ case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
+ case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
+ case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
+ case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
+ case V4L2_CID_STATELESS_H264_DECODE_MODE:
+ case V4L2_CID_STATELESS_H264_START_CODE:
+ case V4L2_CID_CAMERA_ORIENTATION:
+ *type = V4L2_CTRL_TYPE_MENU;
+ break;
+ case V4L2_CID_LINK_FREQ:
+ *type = V4L2_CTRL_TYPE_INTEGER_MENU;
+ break;
+ case V4L2_CID_RDS_TX_PS_NAME:
+ case V4L2_CID_RDS_TX_RADIO_TEXT:
+ case V4L2_CID_RDS_RX_PS_NAME:
+ case V4L2_CID_RDS_RX_RADIO_TEXT:
+ *type = V4L2_CTRL_TYPE_STRING;
+ break;
+ case V4L2_CID_ISO_SENSITIVITY:
+ case V4L2_CID_AUTO_EXPOSURE_BIAS:
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
+ case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
+ *type = V4L2_CTRL_TYPE_INTEGER_MENU;
+ break;
+ case V4L2_CID_USER_CLASS:
+ case V4L2_CID_CAMERA_CLASS:
+ case V4L2_CID_CODEC_CLASS:
+ case V4L2_CID_FM_TX_CLASS:
+ case V4L2_CID_FLASH_CLASS:
+ case V4L2_CID_JPEG_CLASS:
+ case V4L2_CID_IMAGE_SOURCE_CLASS:
+ case V4L2_CID_IMAGE_PROC_CLASS:
+ case V4L2_CID_DV_CLASS:
+ case V4L2_CID_FM_RX_CLASS:
+ case V4L2_CID_RF_TUNER_CLASS:
+ case V4L2_CID_DETECT_CLASS:
+ case V4L2_CID_CODEC_STATELESS_CLASS:
+ case V4L2_CID_COLORIMETRY_CLASS:
+ *type = V4L2_CTRL_TYPE_CTRL_CLASS;
+ /* You can neither read nor write these */
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
+ *min = *max = *step = *def = 0;
+ break;
+ case V4L2_CID_BG_COLOR:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *step = 1;
+ *min = 0;
+ /* Max is calculated as RGB888 that is 2^24 */
+ *max = 0xFFFFFF;
+ break;
+ case V4L2_CID_FLASH_FAULT:
+ case V4L2_CID_JPEG_ACTIVE_MARKER:
+ case V4L2_CID_3A_LOCK:
+ case V4L2_CID_AUTO_FOCUS_STATUS:
+ case V4L2_CID_DV_TX_HOTPLUG:
+ case V4L2_CID_DV_TX_RXSENSE:
+ case V4L2_CID_DV_TX_EDID_PRESENT:
+ case V4L2_CID_DV_RX_POWER_PRESENT:
+ *type = V4L2_CTRL_TYPE_BITMASK;
+ break;
+ case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
+ case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
+ case V4L2_CID_MPEG_VIDEO_DEC_PTS:
+ *type = V4L2_CTRL_TYPE_INTEGER64;
+ *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
+ *min = *def = 0;
+ *max = 0x1ffffffffLL;
+ *step = 1;
+ break;
+ case V4L2_CID_MPEG_VIDEO_DEC_FRAME:
+ *type = V4L2_CTRL_TYPE_INTEGER64;
+ *flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
+ *min = *def = 0;
+ *max = 0x7fffffffffffffffLL;
+ *step = 1;
+ break;
+ case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:
+ *type = V4L2_CTRL_TYPE_INTEGER64;
+ *min = 0;
+ /* default for 8 bit black, luma is 16, chroma is 128 */
+ *def = 0x8000800010LL;
+ *max = 0xffffffffffffLL;
+ *step = 1;
+ break;
+ case V4L2_CID_PIXEL_RATE:
+ *type = V4L2_CTRL_TYPE_INTEGER64;
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
+ case V4L2_CID_DETECT_MD_REGION_GRID:
+ *type = V4L2_CTRL_TYPE_U8;
+ break;
+ case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
+ *type = V4L2_CTRL_TYPE_U16;
+ break;
+ case V4L2_CID_RDS_TX_ALT_FREQS:
+ *type = V4L2_CTRL_TYPE_U32;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:
+ *type = V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:
+ *type = V4L2_CTRL_TYPE_MPEG2_QUANTIZATION;
+ break;
+ case V4L2_CID_STATELESS_FWHT_PARAMS:
+ *type = V4L2_CTRL_TYPE_FWHT_PARAMS;
+ break;
+ case V4L2_CID_STATELESS_H264_SPS:
+ *type = V4L2_CTRL_TYPE_H264_SPS;
+ break;
+ case V4L2_CID_STATELESS_H264_PPS:
+ *type = V4L2_CTRL_TYPE_H264_PPS;
+ break;
+ case V4L2_CID_STATELESS_H264_SCALING_MATRIX:
+ *type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX;
+ break;
+ case V4L2_CID_STATELESS_H264_SLICE_PARAMS:
+ *type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS;
+ break;
+ case V4L2_CID_STATELESS_H264_DECODE_PARAMS:
+ *type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS;
+ break;
+ case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:
+ *type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS;
+ break;
+ case V4L2_CID_STATELESS_VP8_FRAME:
+ *type = V4L2_CTRL_TYPE_VP8_FRAME;
+ break;
+ case V4L2_CID_MPEG_VIDEO_HEVC_SPS:
+ *type = V4L2_CTRL_TYPE_HEVC_SPS;
+ break;
+ case V4L2_CID_MPEG_VIDEO_HEVC_PPS:
+ *type = V4L2_CTRL_TYPE_HEVC_PPS;
+ break;
+ case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
+ *type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
+ break;
+ case V4L2_CID_UNIT_CELL_SIZE:
+ *type = V4L2_CTRL_TYPE_AREA;
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
+ case V4L2_CID_COLORIMETRY_HDR10_CLL_INFO:
+ *type = V4L2_CTRL_TYPE_HDR10_CLL_INFO;
+ break;
+ case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY:
+ *type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY;
+ break;
+ default:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ break;
+ }
+ switch (id) {
+ case V4L2_CID_MPEG_AUDIO_ENCODING:
+ case V4L2_CID_MPEG_AUDIO_MODE:
+ case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ *flags |= V4L2_CTRL_FLAG_UPDATE;
+ break;
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_BRIGHTNESS:
+ case V4L2_CID_CONTRAST:
+ case V4L2_CID_SATURATION:
+ case V4L2_CID_HUE:
+ case V4L2_CID_RED_BALANCE:
+ case V4L2_CID_BLUE_BALANCE:
+ case V4L2_CID_GAMMA:
+ case V4L2_CID_SHARPNESS:
+ case V4L2_CID_CHROMA_GAIN:
+ case V4L2_CID_RDS_TX_DEVIATION:
+ case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
+ case V4L2_CID_AUDIO_LIMITER_DEVIATION:
+ case V4L2_CID_AUDIO_COMPRESSION_GAIN:
+ case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
+ case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
+ case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
+ case V4L2_CID_PILOT_TONE_DEVIATION:
+ case V4L2_CID_PILOT_TONE_FREQUENCY:
+ case V4L2_CID_TUNE_POWER_LEVEL:
+ case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
+ case V4L2_CID_RF_TUNER_RF_GAIN:
+ case V4L2_CID_RF_TUNER_LNA_GAIN:
+ case V4L2_CID_RF_TUNER_MIXER_GAIN:
+ case V4L2_CID_RF_TUNER_IF_GAIN:
+ case V4L2_CID_RF_TUNER_BANDWIDTH:
+ case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
+ *flags |= V4L2_CTRL_FLAG_SLIDER;
+ break;
+ case V4L2_CID_PAN_RELATIVE:
+ case V4L2_CID_TILT_RELATIVE:
+ case V4L2_CID_FOCUS_RELATIVE:
+ case V4L2_CID_IRIS_RELATIVE:
+ case V4L2_CID_ZOOM_RELATIVE:
+ *flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+ V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ break;
+ case V4L2_CID_FLASH_STROBE_STATUS:
+ case V4L2_CID_AUTO_FOCUS_STATUS:
+ case V4L2_CID_FLASH_READY:
+ case V4L2_CID_DV_TX_HOTPLUG:
+ case V4L2_CID_DV_TX_RXSENSE:
+ case V4L2_CID_DV_TX_EDID_PRESENT:
+ case V4L2_CID_DV_RX_POWER_PRESENT:
+ case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
+ case V4L2_CID_RDS_RX_PTY:
+ case V4L2_CID_RDS_RX_PS_NAME:
+ case V4L2_CID_RDS_RX_RADIO_TEXT:
+ case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
+ case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
+ case V4L2_CID_RDS_RX_MUSIC_SPEECH:
+ case V4L2_CID_CAMERA_ORIENTATION:
+ case V4L2_CID_CAMERA_SENSOR_ROTATION:
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
+ case V4L2_CID_RF_TUNER_PLL_LOCK:
+ *flags |= V4L2_CTRL_FLAG_VOLATILE;
+ break;
+ }
+}
+EXPORT_SYMBOL(v4l2_ctrl_fill);
+
+static u32 user_flags(const struct v4l2_ctrl *ctrl)
+{
+ u32 flags = ctrl->flags;
+
+ if (ctrl->is_ptr)
+ flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
+
+ return flags;
+}
+
+static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
+{
+ memset(ev, 0, sizeof(*ev));
+ ev->type = V4L2_EVENT_CTRL;
+ ev->id = ctrl->id;
+ ev->u.ctrl.changes = changes;
+ ev->u.ctrl.type = ctrl->type;
+ ev->u.ctrl.flags = user_flags(ctrl);
+ if (ctrl->is_ptr)
+ ev->u.ctrl.value64 = 0;
+ else
+ ev->u.ctrl.value64 = *ctrl->p_cur.p_s64;
+ ev->u.ctrl.minimum = ctrl->minimum;
+ ev->u.ctrl.maximum = ctrl->maximum;
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU
+ || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
+ ev->u.ctrl.step = 1;
+ else
+ ev->u.ctrl.step = ctrl->step;
+ ev->u.ctrl.default_value = ctrl->default_value;
+}
+
+static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes)
+{
+ struct v4l2_event ev;
+ struct v4l2_subscribed_event *sev;
+
+ if (list_empty(&ctrl->ev_subs))
+ return;
+ fill_event(&ev, ctrl, changes);
+
+ list_for_each_entry(sev, &ctrl->ev_subs, node)
+ if (sev->fh != fh ||
+ (sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))
+ v4l2_event_queue_fh(sev->fh, &ev);
+}
+
+static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr1,
+ union v4l2_ctrl_ptr ptr2)
+{
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_BUTTON:
+ return false;
+ case V4L2_CTRL_TYPE_STRING:
+ idx *= ctrl->elem_size;
+ /* strings are always 0-terminated */
+ return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx);
+ case V4L2_CTRL_TYPE_INTEGER64:
+ return ptr1.p_s64[idx] == ptr2.p_s64[idx];
+ case V4L2_CTRL_TYPE_U8:
+ return ptr1.p_u8[idx] == ptr2.p_u8[idx];
+ case V4L2_CTRL_TYPE_U16:
+ return ptr1.p_u16[idx] == ptr2.p_u16[idx];
+ case V4L2_CTRL_TYPE_U32:
+ return ptr1.p_u32[idx] == ptr2.p_u32[idx];
+ default:
+ if (ctrl->is_int)
+ return ptr1.p_s32[idx] == ptr2.p_s32[idx];
+ idx *= ctrl->elem_size;
+ return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx,
+ ctrl->elem_size);
+ }
+}
+
+static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr)
+{
+ struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
+ struct v4l2_ctrl_vp8_frame *p_vp8_frame;
+ struct v4l2_ctrl_fwht_params *p_fwht_params;
+ void *p = ptr.p + idx * ctrl->elem_size;
+
+ if (ctrl->p_def.p_const)
+ memcpy(p, ctrl->p_def.p_const, ctrl->elem_size);
+ else
+ memset(p, 0, ctrl->elem_size);
+
+ /*
+ * The cast is needed to get rid of a gcc warning complaining that
+ * V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS is not part of the
+ * v4l2_ctrl_type enum.
+ */
+ switch ((u32)ctrl->type) {
+ case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+ p_mpeg2_slice_params = p;
+ /* 4:2:0 */
+ p_mpeg2_slice_params->sequence.chroma_format = 1;
+ /* interlaced top field */
+ p_mpeg2_slice_params->picture.picture_structure = 1;
+ p_mpeg2_slice_params->picture.picture_coding_type =
+ V4L2_MPEG2_PICTURE_CODING_TYPE_I;
+ break;
+ case V4L2_CTRL_TYPE_VP8_FRAME:
+ p_vp8_frame = p;
+ p_vp8_frame->num_dct_parts = 1;
+ break;
+ case V4L2_CTRL_TYPE_FWHT_PARAMS:
+ p_fwht_params = p;
+ p_fwht_params->version = V4L2_FWHT_VERSION;
+ p_fwht_params->width = 1280;
+ p_fwht_params->height = 720;
+ p_fwht_params->flags = V4L2_FWHT_FL_PIXENC_YUV |
+ (2 << V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
+ break;
+ }
+}
+
+static void std_init(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr)
+{
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_STRING:
+ idx *= ctrl->elem_size;
+ memset(ptr.p_char + idx, ' ', ctrl->minimum);
+ ptr.p_char[idx + ctrl->minimum] = '\0';
+ break;
+ case V4L2_CTRL_TYPE_INTEGER64:
+ ptr.p_s64[idx] = ctrl->default_value;
+ break;
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_BITMASK:
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ ptr.p_s32[idx] = ctrl->default_value;
+ break;
+ case V4L2_CTRL_TYPE_BUTTON:
+ case V4L2_CTRL_TYPE_CTRL_CLASS:
+ ptr.p_s32[idx] = 0;
+ break;
+ case V4L2_CTRL_TYPE_U8:
+ ptr.p_u8[idx] = ctrl->default_value;
+ break;
+ case V4L2_CTRL_TYPE_U16:
+ ptr.p_u16[idx] = ctrl->default_value;
+ break;
+ case V4L2_CTRL_TYPE_U32:
+ ptr.p_u32[idx] = ctrl->default_value;
+ break;
+ default:
+ std_init_compound(ctrl, idx, ptr);
+ break;
+ }
+}
+
+static void std_log(const struct v4l2_ctrl *ctrl)
+{
+ union v4l2_ctrl_ptr ptr = ctrl->p_cur;
+
+ if (ctrl->is_array) {
+ unsigned i;
+
+ for (i = 0; i < ctrl->nr_of_dims; i++)
+ pr_cont("[%u]", ctrl->dims[i]);
+ pr_cont(" ");
+ }
+
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_INTEGER:
+ pr_cont("%d", *ptr.p_s32);
+ break;
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ pr_cont("%s", *ptr.p_s32 ? "true" : "false");
+ break;
+ case V4L2_CTRL_TYPE_MENU:
+ pr_cont("%s", ctrl->qmenu[*ptr.p_s32]);
+ break;
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]);
+ break;
+ case V4L2_CTRL_TYPE_BITMASK:
+ pr_cont("0x%08x", *ptr.p_s32);
+ break;
+ case V4L2_CTRL_TYPE_INTEGER64:
+ pr_cont("%lld", *ptr.p_s64);
+ break;
+ case V4L2_CTRL_TYPE_STRING:
+ pr_cont("%s", ptr.p_char);
+ break;
+ case V4L2_CTRL_TYPE_U8:
+ pr_cont("%u", (unsigned)*ptr.p_u8);
+ break;
+ case V4L2_CTRL_TYPE_U16:
+ pr_cont("%u", (unsigned)*ptr.p_u16);
+ break;
+ case V4L2_CTRL_TYPE_U32:
+ pr_cont("%u", (unsigned)*ptr.p_u32);
+ break;
+ case V4L2_CTRL_TYPE_H264_SPS:
+ pr_cont("H264_SPS");
+ break;
+ case V4L2_CTRL_TYPE_H264_PPS:
+ pr_cont("H264_PPS");
+ break;
+ case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+ pr_cont("H264_SCALING_MATRIX");
+ break;
+ case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+ pr_cont("H264_SLICE_PARAMS");
+ break;
+ case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+ pr_cont("H264_DECODE_PARAMS");
+ break;
+ case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+ pr_cont("H264_PRED_WEIGHTS");
+ break;
+ case V4L2_CTRL_TYPE_FWHT_PARAMS:
+ pr_cont("FWHT_PARAMS");
+ break;
+ case V4L2_CTRL_TYPE_VP8_FRAME:
+ pr_cont("VP8_FRAME");
+ break;
+ case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+ pr_cont("HDR10_CLL_INFO");
+ break;
+ case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+ pr_cont("HDR10_MASTERING_DISPLAY");
+ break;
+ default:
+ pr_cont("unknown type %d", ctrl->type);
+ break;
+ }
+}
+
+/*
+ * Round towards the closest legal value. Be careful when we are
+ * close to the maximum range of the control type to prevent
+ * wrap-arounds.
+ */
+#define ROUND_TO_RANGE(val, offset_type, ctrl) \
+({ \
+ offset_type offset; \
+ if ((ctrl)->maximum >= 0 && \
+ val >= (ctrl)->maximum - (s32)((ctrl)->step / 2)) \
+ val = (ctrl)->maximum; \
+ else \
+ val += (s32)((ctrl)->step / 2); \
+ val = clamp_t(typeof(val), val, \
+ (ctrl)->minimum, (ctrl)->maximum); \
+ offset = (val) - (ctrl)->minimum; \
+ offset = (ctrl)->step * (offset / (u32)(ctrl)->step); \
+ val = (ctrl)->minimum + offset; \
+ 0; \
+})
+
+/* Validate a new control */
+
+#define zero_padding(s) \
+ memset(&(s).padding, 0, sizeof((s).padding))
+#define zero_reserved(s) \
+ memset(&(s).reserved, 0, sizeof((s).reserved))
+
+/*
+ * Compound controls validation requires setting unused fields/flags to zero
+ * in order to properly detect unchanged controls with std_equal's memcmp.
+ */
+static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr)
+{
+ struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
+ struct v4l2_ctrl_vp8_frame *p_vp8_frame;
+ struct v4l2_ctrl_fwht_params *p_fwht_params;
+ struct v4l2_ctrl_h264_sps *p_h264_sps;
+ struct v4l2_ctrl_h264_pps *p_h264_pps;
+ struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights;
+ struct v4l2_ctrl_h264_slice_params *p_h264_slice_params;
+ struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
+ struct v4l2_ctrl_hevc_sps *p_hevc_sps;
+ struct v4l2_ctrl_hevc_pps *p_hevc_pps;
+ struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
+ struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
+ struct v4l2_area *area;
+ void *p = ptr.p + idx * ctrl->elem_size;
+ unsigned int i;
+
+ switch ((u32)ctrl->type) {
+ case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+ p_mpeg2_slice_params = p;
+
+ switch (p_mpeg2_slice_params->sequence.chroma_format) {
+ case 1: /* 4:2:0 */
+ case 2: /* 4:2:2 */
+ case 3: /* 4:4:4 */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (p_mpeg2_slice_params->picture.intra_dc_precision) {
+ case 0: /* 8 bits */
+ case 1: /* 9 bits */
+ case 2: /* 10 bits */
+ case 3: /* 11 bits */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (p_mpeg2_slice_params->picture.picture_structure) {
+ case 1: /* interlaced top field */
+ case 2: /* interlaced bottom field */
+ case 3: /* progressive */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (p_mpeg2_slice_params->picture.picture_coding_type) {
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
+ case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ break;
+
+ case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
+ break;
+
+ case V4L2_CTRL_TYPE_FWHT_PARAMS:
+ p_fwht_params = p;
+ if (p_fwht_params->version < V4L2_FWHT_VERSION)
+ return -EINVAL;
+ if (!p_fwht_params->width || !p_fwht_params->height)
+ return -EINVAL;
+ break;
+
+ case V4L2_CTRL_TYPE_H264_SPS:
+ p_h264_sps = p;
+
+ /* Some syntax elements are only conditionally valid */
+ if (p_h264_sps->pic_order_cnt_type != 0) {
+ p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0;
+ } else if (p_h264_sps->pic_order_cnt_type != 1) {
+ p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0;
+ p_h264_sps->offset_for_non_ref_pic = 0;
+ p_h264_sps->offset_for_top_to_bottom_field = 0;
+ memset(&p_h264_sps->offset_for_ref_frame, 0,
+ sizeof(p_h264_sps->offset_for_ref_frame));
+ }
+
+ if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) {
+ p_h264_sps->chroma_format_idc = 1;
+ p_h264_sps->bit_depth_luma_minus8 = 0;
+ p_h264_sps->bit_depth_chroma_minus8 = 0;
+
+ p_h264_sps->flags &=
+ ~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
+
+ if (p_h264_sps->chroma_format_idc < 3)
+ p_h264_sps->flags &=
+ ~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
+ }
+
+ if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
+ p_h264_sps->flags &=
+ ~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
+
+ /*
+ * Chroma 4:2:2 format require at least High 4:2:2 profile.
+ *
+ * The H264 specification and well-known parser implementations
+ * use profile-idc values directly, as that is clearer and
+ * less ambiguous. We do the same here.
+ */
+ if (p_h264_sps->profile_idc < 122 &&
+ p_h264_sps->chroma_format_idc > 1)
+ return -EINVAL;
+ /* Chroma 4:4:4 format require at least High 4:2:2 profile */
+ if (p_h264_sps->profile_idc < 244 &&
+ p_h264_sps->chroma_format_idc > 2)
+ return -EINVAL;
+ if (p_h264_sps->chroma_format_idc > 3)
+ return -EINVAL;
+
+ if (p_h264_sps->bit_depth_luma_minus8 > 6)
+ return -EINVAL;
+ if (p_h264_sps->bit_depth_chroma_minus8 > 6)
+ return -EINVAL;
+ if (p_h264_sps->log2_max_frame_num_minus4 > 12)
+ return -EINVAL;
+ if (p_h264_sps->pic_order_cnt_type > 2)
+ return -EINVAL;
+ if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
+ return -EINVAL;
+ if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN)
+ return -EINVAL;
+ break;
+
+ case V4L2_CTRL_TYPE_H264_PPS:
+ p_h264_pps = p;
+
+ if (p_h264_pps->num_slice_groups_minus1 > 7)
+ return -EINVAL;
+ if (p_h264_pps->num_ref_idx_l0_default_active_minus1 >
+ (V4L2_H264_REF_LIST_LEN - 1))
+ return -EINVAL;
+ if (p_h264_pps->num_ref_idx_l1_default_active_minus1 >
+ (V4L2_H264_REF_LIST_LEN - 1))
+ return -EINVAL;
+ if (p_h264_pps->weighted_bipred_idc > 2)
+ return -EINVAL;
+ /*
+ * pic_init_qp_minus26 shall be in the range of
+ * -(26 + QpBdOffset_y) to +25, inclusive,
+ * where QpBdOffset_y is 6 * bit_depth_luma_minus8
+ */
+ if (p_h264_pps->pic_init_qp_minus26 < -62 ||
+ p_h264_pps->pic_init_qp_minus26 > 25)
+ return -EINVAL;
+ if (p_h264_pps->pic_init_qs_minus26 < -26 ||
+ p_h264_pps->pic_init_qs_minus26 > 25)
+ return -EINVAL;
+ if (p_h264_pps->chroma_qp_index_offset < -12 ||
+ p_h264_pps->chroma_qp_index_offset > 12)
+ return -EINVAL;
+ if (p_h264_pps->second_chroma_qp_index_offset < -12 ||
+ p_h264_pps->second_chroma_qp_index_offset > 12)
+ return -EINVAL;
+ break;
+
+ case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+ break;
+
+ case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+ p_h264_pred_weights = p;
+
+ if (p_h264_pred_weights->luma_log2_weight_denom > 7)
+ return -EINVAL;
+ if (p_h264_pred_weights->chroma_log2_weight_denom > 7)
+ return -EINVAL;
+ break;
+
+ case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+ p_h264_slice_params = p;
+
+ if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
+ p_h264_slice_params->flags &=
+ ~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
+
+ if (p_h264_slice_params->colour_plane_id > 2)
+ return -EINVAL;
+ if (p_h264_slice_params->cabac_init_idc > 2)
+ return -EINVAL;
+ if (p_h264_slice_params->disable_deblocking_filter_idc > 2)
+ return -EINVAL;
+ if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 ||
+ p_h264_slice_params->slice_alpha_c0_offset_div2 > 6)
+ return -EINVAL;
+ if (p_h264_slice_params->slice_beta_offset_div2 < -6 ||
+ p_h264_slice_params->slice_beta_offset_div2 > 6)
+ return -EINVAL;
+
+ if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I ||
+ p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI)
+ p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0;
+ if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
+ p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0;
+
+ if (p_h264_slice_params->num_ref_idx_l0_active_minus1 >
+ (V4L2_H264_REF_LIST_LEN - 1))
+ return -EINVAL;
+ if (p_h264_slice_params->num_ref_idx_l1_active_minus1 >
+ (V4L2_H264_REF_LIST_LEN - 1))
+ return -EINVAL;
+ zero_reserved(*p_h264_slice_params);
+ break;
+
+ case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+ p_h264_dec_params = p;
+
+ if (p_h264_dec_params->nal_ref_idc > 3)
+ return -EINVAL;
+ for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) {
+ struct v4l2_h264_dpb_entry *dpb_entry =
+ &p_h264_dec_params->dpb[i];
+
+ zero_reserved(*dpb_entry);
+ }
+ zero_reserved(*p_h264_dec_params);
+ break;
+
+ case V4L2_CTRL_TYPE_VP8_FRAME:
+ p_vp8_frame = p;
+
+ switch (p_vp8_frame->num_dct_parts) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ break;
+ default:
+ return -EINVAL;
+ }
+ zero_padding(p_vp8_frame->segment);
+ zero_padding(p_vp8_frame->lf);
+ zero_padding(p_vp8_frame->quant);
+ zero_padding(p_vp8_frame->entropy);
+ zero_padding(p_vp8_frame->coder_state);
+ break;
+
+ case V4L2_CTRL_TYPE_HEVC_SPS:
+ p_hevc_sps = p;
+
+ if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) {
+ p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0;
+ p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0;
+ p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0;
+ p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0;
+ }
+
+ if (!(p_hevc_sps->flags &
+ V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT))
+ p_hevc_sps->num_long_term_ref_pics_sps = 0;
+ break;
+
+ case V4L2_CTRL_TYPE_HEVC_PPS:
+ p_hevc_pps = p;
+
+ if (!(p_hevc_pps->flags &
+ V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
+ p_hevc_pps->diff_cu_qp_delta_depth = 0;
+
+ if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
+ p_hevc_pps->num_tile_columns_minus1 = 0;
+ p_hevc_pps->num_tile_rows_minus1 = 0;
+ memset(&p_hevc_pps->column_width_minus1, 0,
+ sizeof(p_hevc_pps->column_width_minus1));
+ memset(&p_hevc_pps->row_height_minus1, 0,
+ sizeof(p_hevc_pps->row_height_minus1));
+
+ p_hevc_pps->flags &=
+ ~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED;
+ }
+
+ if (p_hevc_pps->flags &
+ V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) {
+ p_hevc_pps->pps_beta_offset_div2 = 0;
+ p_hevc_pps->pps_tc_offset_div2 = 0;
+ }
+
+ zero_padding(*p_hevc_pps);
+ break;
+
+ case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+ p_hevc_slice_params = p;
+
+ if (p_hevc_slice_params->num_active_dpb_entries >
+ V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
+ return -EINVAL;
+
+ zero_padding(p_hevc_slice_params->pred_weight_table);
+
+ for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries;
+ i++) {
+ struct v4l2_hevc_dpb_entry *dpb_entry =
+ &p_hevc_slice_params->dpb[i];
+
+ zero_padding(*dpb_entry);
+ }
+
+ zero_padding(*p_hevc_slice_params);
+ break;
+
+ case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+ break;
+
+ case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+ p_hdr10_mastering = p;
+
+ for (i = 0; i < 3; ++i) {
+ if (p_hdr10_mastering->display_primaries_x[i] <
+ V4L2_HDR10_MASTERING_PRIMARIES_X_LOW ||
+ p_hdr10_mastering->display_primaries_x[i] >
+ V4L2_HDR10_MASTERING_PRIMARIES_X_HIGH ||
+ p_hdr10_mastering->display_primaries_y[i] <
+ V4L2_HDR10_MASTERING_PRIMARIES_Y_LOW ||
+ p_hdr10_mastering->display_primaries_y[i] >
+ V4L2_HDR10_MASTERING_PRIMARIES_Y_HIGH)
+ return -EINVAL;
+ }
+
+ if (p_hdr10_mastering->white_point_x <
+ V4L2_HDR10_MASTERING_WHITE_POINT_X_LOW ||
+ p_hdr10_mastering->white_point_x >
+ V4L2_HDR10_MASTERING_WHITE_POINT_X_HIGH ||
+ p_hdr10_mastering->white_point_y <
+ V4L2_HDR10_MASTERING_WHITE_POINT_Y_LOW ||
+ p_hdr10_mastering->white_point_y >
+ V4L2_HDR10_MASTERING_WHITE_POINT_Y_HIGH)
+ return -EINVAL;
+
+ if (p_hdr10_mastering->max_display_mastering_luminance <
+ V4L2_HDR10_MASTERING_MAX_LUMA_LOW ||
+ p_hdr10_mastering->max_display_mastering_luminance >
+ V4L2_HDR10_MASTERING_MAX_LUMA_HIGH ||
+ p_hdr10_mastering->min_display_mastering_luminance <
+ V4L2_HDR10_MASTERING_MIN_LUMA_LOW ||
+ p_hdr10_mastering->min_display_mastering_luminance >
+ V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+ return -EINVAL;
+
+ /* The following restriction comes from ITU-T Rec. H.265 spec */
+ if (p_hdr10_mastering->max_display_mastering_luminance ==
+ V4L2_HDR10_MASTERING_MAX_LUMA_LOW &&
+ p_hdr10_mastering->min_display_mastering_luminance ==
+ V4L2_HDR10_MASTERING_MIN_LUMA_HIGH)
+ return -EINVAL;
+
+ break;
+
+ case V4L2_CTRL_TYPE_AREA:
+ area = p;
+ if (!area->width || !area->height)
+ return -EINVAL;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
+ union v4l2_ctrl_ptr ptr)
+{
+ size_t len;
+ u64 offset;
+ s64 val;
+
+ switch ((u32)ctrl->type) {
+ case V4L2_CTRL_TYPE_INTEGER:
+ return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl);
+ case V4L2_CTRL_TYPE_INTEGER64:
+ /*
+ * We can't use the ROUND_TO_RANGE define here due to
+ * the u64 divide that needs special care.
+ */
+ val = ptr.p_s64[idx];
+ if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2))
+ val = ctrl->maximum;
+ else
+ val += (s64)(ctrl->step / 2);
+ val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum);
+ offset = val - ctrl->minimum;
+ do_div(offset, ctrl->step);
+ ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step;
+ return 0;
+ case V4L2_CTRL_TYPE_U8:
+ return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl);
+ case V4L2_CTRL_TYPE_U16:
+ return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl);
+ case V4L2_CTRL_TYPE_U32:
+ return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl);
+
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ ptr.p_s32[idx] = !!ptr.p_s32[idx];
+ return 0;
+
+ case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum)
+ return -ERANGE;
+ if (ptr.p_s32[idx] < BITS_PER_LONG_LONG &&
+ (ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx])))
+ return -EINVAL;
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
+ ctrl->qmenu[ptr.p_s32[idx]][0] == '\0')
+ return -EINVAL;
+ return 0;
+
+ case V4L2_CTRL_TYPE_BITMASK:
+ ptr.p_s32[idx] &= ctrl->maximum;
+ return 0;
+
+ case V4L2_CTRL_TYPE_BUTTON:
+ case V4L2_CTRL_TYPE_CTRL_CLASS:
+ ptr.p_s32[idx] = 0;
+ return 0;
+
+ case V4L2_CTRL_TYPE_STRING:
+ idx *= ctrl->elem_size;
+ len = strlen(ptr.p_char + idx);
+ if (len < ctrl->minimum)
+ return -ERANGE;
+ if ((len - (u32)ctrl->minimum) % (u32)ctrl->step)
+ return -ERANGE;
+ return 0;
+
+ default:
+ return std_validate_compound(ctrl, idx, ptr);
+ }
+}
+
+static const struct v4l2_ctrl_type_ops std_type_ops = {
+ .equal = std_equal,
+ .init = std_init,
+ .log = std_log,
+ .validate = std_validate,
+};
+
+/* Helper function: copy the given control value back to the caller */
+static int ptr_to_user(struct v4l2_ext_control *c,
+ struct v4l2_ctrl *ctrl,
+ union v4l2_ctrl_ptr ptr)
+{
+ u32 len;
+
+ if (ctrl->is_ptr && !ctrl->is_string)
+ return copy_to_user(c->ptr, ptr.p_const, c->size) ?
+ -EFAULT : 0;
+
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_STRING:
+ len = strlen(ptr.p_char);
+ if (c->size < len + 1) {
+ c->size = ctrl->elem_size;
+ return -ENOSPC;
+ }
+ return copy_to_user(c->string, ptr.p_char, len + 1) ?
+ -EFAULT : 0;
+ case V4L2_CTRL_TYPE_INTEGER64:
+ c->value64 = *ptr.p_s64;
+ break;
+ default:
+ c->value = *ptr.p_s32;
+ break;
+ }
+ return 0;
+}
+
+/* Helper function: copy the current control value back to the caller */
+static int cur_to_user(struct v4l2_ext_control *c,
+ struct v4l2_ctrl *ctrl)
+{
+ return ptr_to_user(c, ctrl, ctrl->p_cur);
+}
+
+/* Helper function: copy the new control value back to the caller */
+static int new_to_user(struct v4l2_ext_control *c,
+ struct v4l2_ctrl *ctrl)
+{
+ return ptr_to_user(c, ctrl, ctrl->p_new);
+}
+
+/* Helper function: copy the request value back to the caller */
+static int req_to_user(struct v4l2_ext_control *c,
+ struct v4l2_ctrl_ref *ref)
+{
+ return ptr_to_user(c, ref->ctrl, ref->p_req);
+}
+
+/* Helper function: copy the initial control value back to the caller */
+static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
+{
+ int idx;
+
+ for (idx = 0; idx < ctrl->elems; idx++)
+ ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
+
+ return ptr_to_user(c, ctrl, ctrl->p_new);
+}
+
+/* Helper function: copy the caller-provider value to the given control value */
+static int user_to_ptr(struct v4l2_ext_control *c,
+ struct v4l2_ctrl *ctrl,
+ union v4l2_ctrl_ptr ptr)
+{
+ int ret;
+ u32 size;
+
+ ctrl->is_new = 1;
+ if (ctrl->is_ptr && !ctrl->is_string) {
+ unsigned idx;
+
+ ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
+ if (ret || !ctrl->is_array)
+ return ret;
+ for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
+ ctrl->type_ops->init(ctrl, idx, ptr);
+ return 0;
+ }
+
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_INTEGER64:
+ *ptr.p_s64 = c->value64;
+ break;
+ case V4L2_CTRL_TYPE_STRING:
+ size = c->size;
+ if (size == 0)
+ return -ERANGE;
+ if (size > ctrl->maximum + 1)
+ size = ctrl->maximum + 1;
+ ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0;
+ if (!ret) {
+ char last = ptr.p_char[size - 1];
+
+ ptr.p_char[size - 1] = 0;
+ /* If the string was longer than ctrl->maximum,
+ then return an error. */
+ if (strlen(ptr.p_char) == ctrl->maximum && last)
+ return -ERANGE;
+ }
+ return ret;
+ default:
+ *ptr.p_s32 = c->value;
+ break;
+ }
+ return 0;
+}
+
+/* Helper function: copy the caller-provider value as the new control value */
+static int user_to_new(struct v4l2_ext_control *c,
+ struct v4l2_ctrl *ctrl)
+{
+ return user_to_ptr(c, ctrl, ctrl->p_new);
+}
+
+/* Copy the one value to another. */
+static void ptr_to_ptr(struct v4l2_ctrl *ctrl,
+ union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to)
+{
+ if (ctrl == NULL)
+ return;
+ memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size);
+}
+
+/* Copy the new value to the current value. */
+static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
+{
+ bool changed;
+
+ if (ctrl == NULL)
+ return;
+
+ /* has_changed is set by cluster_changed */
+ changed = ctrl->has_changed;
+ if (changed)
+ ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur);
+
+ if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) {
+ /* Note: CH_FLAGS is only set for auto clusters. */
+ ctrl->flags &=
+ ~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE);
+ if (!is_cur_manual(ctrl->cluster[0])) {
+ ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
+ if (ctrl->cluster[0]->has_volatiles)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ }
+ fh = NULL;
+ }
+ if (changed || ch_flags) {
+ /* If a control was changed that was not one of the controls
+ modified by the application, then send the event to all. */
+ if (!ctrl->is_new)
+ fh = NULL;
+ send_event(fh, ctrl,
+ (changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags);
+ if (ctrl->call_notify && changed && ctrl->handler->notify)
+ ctrl->handler->notify(ctrl, ctrl->handler->notify_priv);
+ }
+}
+
+/* Copy the current value to the new value */
+static void cur_to_new(struct v4l2_ctrl *ctrl)
+{
+ if (ctrl == NULL)
+ return;
+ ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new);
+}
+
+/* Copy the new value to the request value */
+static void new_to_req(struct v4l2_ctrl_ref *ref)
+{
+ if (!ref)
+ return;
+ ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req);
+ ref->valid_p_req = true;
+}
+
+/* Copy the current value to the request value */
+static void cur_to_req(struct v4l2_ctrl_ref *ref)
+{
+ if (!ref)
+ return;
+ ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->p_req);
+ ref->valid_p_req = true;
+}
+
+/* Copy the request value to the new value */
+static void req_to_new(struct v4l2_ctrl_ref *ref)
+{
+ if (!ref)
+ return;
+ if (ref->valid_p_req)
+ ptr_to_ptr(ref->ctrl, ref->p_req, ref->ctrl->p_new);
+ else
+ ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new);
+}
+
+/* Return non-zero if one or more of the controls in the cluster has a new
+ value that differs from the current value. */
+static int cluster_changed(struct v4l2_ctrl *master)
+{
+ bool changed = false;
+ unsigned idx;
+ int i;
+
+ for (i = 0; i < master->ncontrols; i++) {
+ struct v4l2_ctrl *ctrl = master->cluster[i];
+ bool ctrl_changed = false;
+
+ if (ctrl == NULL)
+ continue;
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE)
+ changed = ctrl_changed = true;
+
+ /*
+ * Set has_changed to false to avoid generating
+ * the event V4L2_EVENT_CTRL_CH_VALUE
+ */
+ if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+ ctrl->has_changed = false;
+ continue;
+ }
+
+ for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
+ ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
+ ctrl->p_cur, ctrl->p_new);
+ ctrl->has_changed = ctrl_changed;
+ changed |= ctrl->has_changed;
+ }
+ return changed;
+}
+
+/* Control range checking */
+static int check_range(enum v4l2_ctrl_type type,
+ s64 min, s64 max, u64 step, s64 def)
+{
+ switch (type) {
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ if (step != 1 || max > 1 || min < 0)
+ return -ERANGE;
+ fallthrough;
+ case V4L2_CTRL_TYPE_U8:
+ case V4L2_CTRL_TYPE_U16:
+ case V4L2_CTRL_TYPE_U32:
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_INTEGER64:
+ if (step == 0 || min > max || def < min || def > max)
+ return -ERANGE;
+ return 0;
+ case V4L2_CTRL_TYPE_BITMASK:
+ if (step || min || !max || (def & ~max))
+ return -ERANGE;
+ return 0;
+ case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ if (min > max || def < min || def > max)
+ return -ERANGE;
+ /* Note: step == menu_skip_mask for menu controls.
+ So here we check if the default value is masked out. */
+ if (step && ((1 << def) & step))
+ return -EINVAL;
+ return 0;
+ case V4L2_CTRL_TYPE_STRING:
+ if (min > max || min < 0 || step < 1 || def)
+ return -ERANGE;
+ return 0;
+ default:
+ return 0;
+ }
+}
+
+/* Validate a new control */
+static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
+{
+ unsigned idx;
+ int err = 0;
+
+ for (idx = 0; !err && idx < ctrl->elems; idx++)
+ err = ctrl->type_ops->validate(ctrl, idx, p_new);
+ return err;
+}
+
+static inline u32 node2id(struct list_head *node)
+{
+ return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
+}
+
+/* Set the handler's error code if it wasn't set earlier already */
+static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
+{
+ if (hdl->error == 0)
+ hdl->error = err;
+ return err;
+}
+
+/* Initialize the handler */
+int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
+ unsigned nr_of_controls_hint,
+ struct lock_class_key *key, const char *name)
+{
+ mutex_init(&hdl->_lock);
+ hdl->lock = &hdl->_lock;
+ lockdep_set_class_and_name(hdl->lock, key, name);
+ INIT_LIST_HEAD(&hdl->ctrls);
+ INIT_LIST_HEAD(&hdl->ctrl_refs);
+ INIT_LIST_HEAD(&hdl->requests);
+ INIT_LIST_HEAD(&hdl->requests_queued);
+ hdl->request_is_queued = false;
+ hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;
+ hdl->buckets = kvmalloc_array(hdl->nr_of_buckets,
+ sizeof(hdl->buckets[0]),
+ GFP_KERNEL | __GFP_ZERO);
+ hdl->error = hdl->buckets ? 0 : -ENOMEM;
+ media_request_object_init(&hdl->req_obj);
+ return hdl->error;
+}
+EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
+
+/* Free all controls and control refs */
+void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)
+{
+ struct v4l2_ctrl_ref *ref, *next_ref;
+ struct v4l2_ctrl *ctrl, *next_ctrl;
+ struct v4l2_subscribed_event *sev, *next_sev;
+
+ if (hdl == NULL || hdl->buckets == NULL)
+ return;
+
+ /*
+ * If the main handler is freed and it is used by handler objects in
+ * outstanding requests, then unbind and put those objects before
+ * freeing the main handler.
+ *
+ * The main handler can be identified by having a NULL ops pointer in
+ * the request object.
+ */
+ if (!hdl->req_obj.ops && !list_empty(&hdl->requests)) {
+ struct v4l2_ctrl_handler *req, *next_req;
+
+ list_for_each_entry_safe(req, next_req, &hdl->requests, requests) {
+ media_request_object_unbind(&req->req_obj);
+ media_request_object_put(&req->req_obj);
+ }
+ }
+ mutex_lock(hdl->lock);
+ /* Free all nodes */
+ list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
+ list_del(&ref->node);
+ kfree(ref);
+ }
+ /* Free all controls owned by the handler */
+ list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {
+ list_del(&ctrl->node);
+ list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
+ list_del(&sev->node);
+ kvfree(ctrl);
+ }
+ kvfree(hdl->buckets);
+ hdl->buckets = NULL;
+ hdl->cached = NULL;
+ hdl->error = 0;
+ mutex_unlock(hdl->lock);
+ mutex_destroy(&hdl->_lock);
+}
+EXPORT_SYMBOL(v4l2_ctrl_handler_free);
+
+/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer
+ be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing
+ with applications that do not use the NEXT_CTRL flag.
+
+ We just find the n-th private user control. It's O(N), but that should not
+ be an issue in this particular case. */
+static struct v4l2_ctrl_ref *find_private_ref(
+ struct v4l2_ctrl_handler *hdl, u32 id)
+{
+ struct v4l2_ctrl_ref *ref;
+
+ id -= V4L2_CID_PRIVATE_BASE;
+ list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+ /* Search for private user controls that are compatible with
+ VIDIOC_G/S_CTRL. */
+ if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
+ V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
+ if (!ref->ctrl->is_int)
+ continue;
+ if (id == 0)
+ return ref;
+ id--;
+ }
+ }
+ return NULL;
+}
+
+/* Find a control with the given ID. */
+static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)
+{
+ struct v4l2_ctrl_ref *ref;
+ int bucket;
+
+ id &= V4L2_CTRL_ID_MASK;
+
+ /* Old-style private controls need special handling */
+ if (id >= V4L2_CID_PRIVATE_BASE)
+ return find_private_ref(hdl, id);
+ bucket = id % hdl->nr_of_buckets;
+
+ /* Simple optimization: cache the last control found */
+ if (hdl->cached && hdl->cached->ctrl->id == id)
+ return hdl->cached;
+
+ /* Not in cache, search the hash */
+ ref = hdl->buckets ? hdl->buckets[bucket] : NULL;
+ while (ref && ref->ctrl->id != id)
+ ref = ref->next;
+
+ if (ref)
+ hdl->cached = ref; /* cache it! */
+ return ref;
+}
+
+/* Find a control with the given ID. Take the handler's lock first. */
+static struct v4l2_ctrl_ref *find_ref_lock(
+ struct v4l2_ctrl_handler *hdl, u32 id)
+{
+ struct v4l2_ctrl_ref *ref = NULL;
+
+ if (hdl) {
+ mutex_lock(hdl->lock);
+ ref = find_ref(hdl, id);
+ mutex_unlock(hdl->lock);
+ }
+ return ref;
+}
+
+/* Find a control with the given ID. */
+struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
+{
+ struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
+
+ return ref ? ref->ctrl : NULL;
+}
+EXPORT_SYMBOL(v4l2_ctrl_find);
+
+/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */
+static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ctrl *ctrl,
+ struct v4l2_ctrl_ref **ctrl_ref,
+ bool from_other_dev, bool allocate_req)
+{
+ struct v4l2_ctrl_ref *ref;
+ struct v4l2_ctrl_ref *new_ref;
+ u32 id = ctrl->id;
+ u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1;
+ int bucket = id % hdl->nr_of_buckets; /* which bucket to use */
+ unsigned int size_extra_req = 0;
+
+ if (ctrl_ref)
+ *ctrl_ref = NULL;
+
+ /*
+ * Automatically add the control class if it is not yet present and
+ * the new control is not a compound control.
+ */
+ if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES &&
+ id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)
+ if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))
+ return hdl->error;
+
+ if (hdl->error)
+ return hdl->error;
+
+ if (allocate_req)
+ size_extra_req = ctrl->elems * ctrl->elem_size;
+ new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL);
+ if (!new_ref)
+ return handler_set_err(hdl, -ENOMEM);
+ new_ref->ctrl = ctrl;
+ new_ref->from_other_dev = from_other_dev;
+ if (size_extra_req)
+ new_ref->p_req.p = &new_ref[1];
+
+ INIT_LIST_HEAD(&new_ref->node);
+
+ mutex_lock(hdl->lock);
+
+ /* Add immediately at the end of the list if the list is empty, or if
+ the last element in the list has a lower ID.
+ This ensures that when elements are added in ascending order the
+ insertion is an O(1) operation. */
+ if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {
+ list_add_tail(&new_ref->node, &hdl->ctrl_refs);
+ goto insert_in_hash;
+ }
+
+ /* Find insert position in sorted list */
+ list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+ if (ref->ctrl->id < id)
+ continue;
+ /* Don't add duplicates */
+ if (ref->ctrl->id == id) {
+ kfree(new_ref);
+ goto unlock;
+ }
+ list_add(&new_ref->node, ref->node.prev);
+ break;
+ }
+
+insert_in_hash:
+ /* Insert the control node in the hash */
+ new_ref->next = hdl->buckets[bucket];
+ hdl->buckets[bucket] = new_ref;
+ if (ctrl_ref)
+ *ctrl_ref = new_ref;
+ if (ctrl->handler == hdl) {
+ /* By default each control starts in a cluster of its own.
+ * new_ref->ctrl is basically a cluster array with one
+ * element, so that's perfect to use as the cluster pointer.
+ * But only do this for the handler that owns the control.
+ */
+ ctrl->cluster = &new_ref->ctrl;
+ ctrl->ncontrols = 1;
+ }
+
+unlock:
+ mutex_unlock(hdl->lock);
+ return 0;
+}
+
+/* Add a new control */
+static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ const struct v4l2_ctrl_type_ops *type_ops,
+ u32 id, const char *name, enum v4l2_ctrl_type type,
+ s64 min, s64 max, u64 step, s64 def,
+ const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size,
+ u32 flags, const char * const *qmenu,
+ const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def,
+ void *priv)
+{
+ struct v4l2_ctrl *ctrl;
+ unsigned sz_extra;
+ unsigned nr_of_dims = 0;
+ unsigned elems = 1;
+ bool is_array;
+ unsigned tot_ctrl_size;
+ unsigned idx;
+ void *data;
+ int err;
+
+ if (hdl->error)
+ return NULL;
+
+ while (dims && dims[nr_of_dims]) {
+ elems *= dims[nr_of_dims];
+ nr_of_dims++;
+ if (nr_of_dims == V4L2_CTRL_MAX_DIMS)
+ break;
+ }
+ is_array = nr_of_dims > 0;
+
+ /* Prefill elem_size for all types handled by std_type_ops */
+ switch ((u32)type) {
+ case V4L2_CTRL_TYPE_INTEGER64:
+ elem_size = sizeof(s64);
+ break;
+ case V4L2_CTRL_TYPE_STRING:
+ elem_size = max + 1;
+ break;
+ case V4L2_CTRL_TYPE_U8:
+ elem_size = sizeof(u8);
+ break;
+ case V4L2_CTRL_TYPE_U16:
+ elem_size = sizeof(u16);
+ break;
+ case V4L2_CTRL_TYPE_U32:
+ elem_size = sizeof(u32);
+ break;
+ case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_mpeg2_slice_params);
+ break;
+ case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
+ elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantization);
+ break;
+ case V4L2_CTRL_TYPE_FWHT_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_fwht_params);
+ break;
+ case V4L2_CTRL_TYPE_H264_SPS:
+ elem_size = sizeof(struct v4l2_ctrl_h264_sps);
+ break;
+ case V4L2_CTRL_TYPE_H264_PPS:
+ elem_size = sizeof(struct v4l2_ctrl_h264_pps);
+ break;
+ case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
+ elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix);
+ break;
+ case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_h264_slice_params);
+ break;
+ case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_h264_decode_params);
+ break;
+ case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
+ elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights);
+ break;
+ case V4L2_CTRL_TYPE_VP8_FRAME:
+ elem_size = sizeof(struct v4l2_ctrl_vp8_frame);
+ break;
+ case V4L2_CTRL_TYPE_HEVC_SPS:
+ elem_size = sizeof(struct v4l2_ctrl_hevc_sps);
+ break;
+ case V4L2_CTRL_TYPE_HEVC_PPS:
+ elem_size = sizeof(struct v4l2_ctrl_hevc_pps);
+ break;
+ case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
+ break;
+ case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
+ elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info);
+ break;
+ case V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY:
+ elem_size = sizeof(struct v4l2_ctrl_hdr10_mastering_display);
+ break;
+ case V4L2_CTRL_TYPE_AREA:
+ elem_size = sizeof(struct v4l2_area);
+ break;
+ default:
+ if (type < V4L2_CTRL_COMPOUND_TYPES)
+ elem_size = sizeof(s32);
+ break;
+ }
+ tot_ctrl_size = elem_size * elems;
+
+ /* Sanity checks */
+ if (id == 0 || name == NULL || !elem_size ||
+ id >= V4L2_CID_PRIVATE_BASE ||
+ (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
+ (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) {
+ handler_set_err(hdl, -ERANGE);
+ return NULL;
+ }
+ err = check_range(type, min, max, step, def);
+ if (err) {
+ handler_set_err(hdl, err);
+ return NULL;
+ }
+ if (is_array &&
+ (type == V4L2_CTRL_TYPE_BUTTON ||
+ type == V4L2_CTRL_TYPE_CTRL_CLASS)) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+
+ sz_extra = 0;
+ if (type == V4L2_CTRL_TYPE_BUTTON)
+ flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
+ V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
+ flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ else if (type == V4L2_CTRL_TYPE_INTEGER64 ||
+ type == V4L2_CTRL_TYPE_STRING ||
+ type >= V4L2_CTRL_COMPOUND_TYPES ||
+ is_array)
+ sz_extra += 2 * tot_ctrl_size;
+
+ if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const)
+ sz_extra += elem_size;
+
+ ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL);
+ if (ctrl == NULL) {
+ handler_set_err(hdl, -ENOMEM);
+ return NULL;
+ }
+
+ INIT_LIST_HEAD(&ctrl->node);
+ INIT_LIST_HEAD(&ctrl->ev_subs);
+ ctrl->handler = hdl;
+ ctrl->ops = ops;
+ ctrl->type_ops = type_ops ? type_ops : &std_type_ops;
+ ctrl->id = id;
+ ctrl->name = name;
+ ctrl->type = type;
+ ctrl->flags = flags;
+ ctrl->minimum = min;
+ ctrl->maximum = max;
+ ctrl->step = step;
+ ctrl->default_value = def;
+ ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING;
+ ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string;
+ ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64;
+ ctrl->is_array = is_array;
+ ctrl->elems = elems;
+ ctrl->nr_of_dims = nr_of_dims;
+ if (nr_of_dims)
+ memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0]));
+ ctrl->elem_size = elem_size;
+ if (type == V4L2_CTRL_TYPE_MENU)
+ ctrl->qmenu = qmenu;
+ else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
+ ctrl->qmenu_int = qmenu_int;
+ ctrl->priv = priv;
+ ctrl->cur.val = ctrl->val = def;
+ data = &ctrl[1];
+
+ if (!ctrl->is_int) {
+ ctrl->p_new.p = data;
+ ctrl->p_cur.p = data + tot_ctrl_size;
+ } else {
+ ctrl->p_new.p = &ctrl->val;
+ ctrl->p_cur.p = &ctrl->cur.val;
+ }
+
+ if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) {
+ ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
+ memcpy(ctrl->p_def.p, p_def.p_const, elem_size);
+ }
+
+ for (idx = 0; idx < elems; idx++) {
+ ctrl->type_ops->init(ctrl, idx, ctrl->p_cur);
+ ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
+ }
+
+ if (handler_new_ref(hdl, ctrl, NULL, false, false)) {
+ kvfree(ctrl);
+ return NULL;
+ }
+ mutex_lock(hdl->lock);
+ list_add_tail(&ctrl->node, &hdl->ctrls);
+ mutex_unlock(hdl->lock);
+ return ctrl;
+}
+
+struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_config *cfg, void *priv)
+{
+ bool is_menu;
+ struct v4l2_ctrl *ctrl;
+ const char *name = cfg->name;
+ const char * const *qmenu = cfg->qmenu;
+ const s64 *qmenu_int = cfg->qmenu_int;
+ enum v4l2_ctrl_type type = cfg->type;
+ u32 flags = cfg->flags;
+ s64 min = cfg->min;
+ s64 max = cfg->max;
+ u64 step = cfg->step;
+ s64 def = cfg->def;
+
+ if (name == NULL)
+ v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
+ &def, &flags);
+
+ is_menu = (type == V4L2_CTRL_TYPE_MENU ||
+ type == V4L2_CTRL_TYPE_INTEGER_MENU);
+ if (is_menu)
+ WARN_ON(step);
+ else
+ WARN_ON(cfg->menu_skip_mask);
+ if (type == V4L2_CTRL_TYPE_MENU && !qmenu) {
+ qmenu = v4l2_ctrl_get_menu(cfg->id);
+ } else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+
+ ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name,
+ type, min, max,
+ is_menu ? cfg->menu_skip_mask : step, def,
+ cfg->dims, cfg->elem_size,
+ flags, qmenu, qmenu_int, cfg->p_def, priv);
+ if (ctrl)
+ ctrl->is_private = cfg->is_private;
+ return ctrl;
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_custom);
+
+/* Helper function for standard non-menu controls */
+struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ u32 id, s64 min, s64 max, u64 step, s64 def)
+{
+ const char *name;
+ enum v4l2_ctrl_type type;
+ u32 flags;
+
+ v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+ if (type == V4L2_CTRL_TYPE_MENU ||
+ type == V4L2_CTRL_TYPE_INTEGER_MENU ||
+ type >= V4L2_CTRL_COMPOUND_TYPES) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+ return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+ min, max, step, def, NULL, 0,
+ flags, NULL, NULL, ptr_null, NULL);
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_std);
+
+/* Helper function for standard menu controls */
+struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ u32 id, u8 _max, u64 mask, u8 _def)
+{
+ const char * const *qmenu = NULL;
+ const s64 *qmenu_int = NULL;
+ unsigned int qmenu_int_len = 0;
+ const char *name;
+ enum v4l2_ctrl_type type;
+ s64 min;
+ s64 max = _max;
+ s64 def = _def;
+ u64 step;
+ u32 flags;
+
+ v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+
+ if (type == V4L2_CTRL_TYPE_MENU)
+ qmenu = v4l2_ctrl_get_menu(id);
+ else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
+ qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len);
+
+ if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+ return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+ 0, max, mask, def, NULL, 0,
+ flags, qmenu, qmenu_int, ptr_null, NULL);
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
+
+/* Helper function for standard menu controls with driver defined menu */
+struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops, u32 id, u8 _max,
+ u64 mask, u8 _def, const char * const *qmenu)
+{
+ enum v4l2_ctrl_type type;
+ const char *name;
+ u32 flags;
+ u64 step;
+ s64 min;
+ s64 max = _max;
+ s64 def = _def;
+
+ /* v4l2_ctrl_new_std_menu_items() should only be called for
+ * standard controls without a standard menu.
+ */
+ if (v4l2_ctrl_get_menu(id)) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+
+ v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+ if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+ return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+ 0, max, mask, def, NULL, 0,
+ flags, qmenu, NULL, ptr_null, NULL);
+
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items);
+
+/* Helper function for standard compound controls */
+struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops, u32 id,
+ const union v4l2_ctrl_ptr p_def)
+{
+ const char *name;
+ enum v4l2_ctrl_type type;
+ u32 flags;
+ s64 min, max, step, def;
+
+ v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+ if (type < V4L2_CTRL_COMPOUND_TYPES) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+ return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+ min, max, step, def, NULL, 0,
+ flags, NULL, NULL, p_def, NULL);
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_std_compound);
+
+/* Helper function for standard integer menu controls */
+struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ops,
+ u32 id, u8 _max, u8 _def, const s64 *qmenu_int)
+{
+ const char *name;
+ enum v4l2_ctrl_type type;
+ s64 min;
+ u64 step;
+ s64 max = _max;
+ s64 def = _def;
+ u32 flags;
+
+ v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
+ if (type != V4L2_CTRL_TYPE_INTEGER_MENU) {
+ handler_set_err(hdl, -EINVAL);
+ return NULL;
+ }
+ return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
+ 0, max, 0, def, NULL, 0,
+ flags, NULL, qmenu_int, ptr_null, NULL);
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_int_menu);
+
+/* Add the controls from another handler to our own. */
+int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ctrl_handler *add,
+ bool (*filter)(const struct v4l2_ctrl *ctrl),
+ bool from_other_dev)
+{
+ struct v4l2_ctrl_ref *ref;
+ int ret = 0;
+
+ /* Do nothing if either handler is NULL or if they are the same */
+ if (!hdl || !add || hdl == add)
+ return 0;
+ if (hdl->error)
+ return hdl->error;
+ mutex_lock(add->lock);
+ list_for_each_entry(ref, &add->ctrl_refs, node) {
+ struct v4l2_ctrl *ctrl = ref->ctrl;
+
+ /* Skip handler-private controls. */
+ if (ctrl->is_private)
+ continue;
+ /* And control classes */
+ if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
+ continue;
+ /* Filter any unwanted controls */
+ if (filter && !filter(ctrl))
+ continue;
+ ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false);
+ if (ret)
+ break;
+ }
+ mutex_unlock(add->lock);
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_ctrl_add_handler);
+
+bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl)
+{
+ if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
+ return true;
+ if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
+ return true;
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ case V4L2_CID_AUDIO_VOLUME:
+ case V4L2_CID_AUDIO_BALANCE:
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ case V4L2_CID_AUDIO_LOUDNESS:
+ return true;
+ default:
+ break;
+ }
+ return false;
+}
+EXPORT_SYMBOL(v4l2_ctrl_radio_filter);
+
+/* Cluster controls */
+void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls)
+{
+ bool has_volatiles = false;
+ int i;
+
+ /* The first control is the master control and it must not be NULL */
+ if (WARN_ON(ncontrols == 0 || controls[0] == NULL))
+ return;
+
+ for (i = 0; i < ncontrols; i++) {
+ if (controls[i]) {
+ controls[i]->cluster = controls;
+ controls[i]->ncontrols = ncontrols;
+ if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE)
+ has_volatiles = true;
+ }
+ }
+ controls[0]->has_volatiles = has_volatiles;
+}
+EXPORT_SYMBOL(v4l2_ctrl_cluster);
+
+void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
+ u8 manual_val, bool set_volatile)
+{
+ struct v4l2_ctrl *master = controls[0];
+ u32 flag = 0;
+ int i;
+
+ v4l2_ctrl_cluster(ncontrols, controls);
+ WARN_ON(ncontrols <= 1);
+ WARN_ON(manual_val < master->minimum || manual_val > master->maximum);
+ WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl));
+ master->is_auto = true;
+ master->has_volatiles = set_volatile;
+ master->manual_mode_value = manual_val;
+ master->flags |= V4L2_CTRL_FLAG_UPDATE;
+
+ if (!is_cur_manual(master))
+ flag = V4L2_CTRL_FLAG_INACTIVE |
+ (set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0);
+
+ for (i = 1; i < ncontrols; i++)
+ if (controls[i])
+ controls[i]->flags |= flag;
+}
+EXPORT_SYMBOL(v4l2_ctrl_auto_cluster);
+
+/* Activate/deactivate a control. */
+void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active)
+{
+ /* invert since the actual flag is called 'inactive' */
+ bool inactive = !active;
+ bool old;
+
+ if (ctrl == NULL)
+ return;
+
+ if (inactive)
+ /* set V4L2_CTRL_FLAG_INACTIVE */
+ old = test_and_set_bit(4, &ctrl->flags);
+ else
+ /* clear V4L2_CTRL_FLAG_INACTIVE */
+ old = test_and_clear_bit(4, &ctrl->flags);
+ if (old != inactive)
+ send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
+}
+EXPORT_SYMBOL(v4l2_ctrl_activate);
+
+void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed)
+{
+ bool old;
+
+ if (ctrl == NULL)
+ return;
+
+ lockdep_assert_held(ctrl->handler->lock);
+
+ if (grabbed)
+ /* set V4L2_CTRL_FLAG_GRABBED */
+ old = test_and_set_bit(1, &ctrl->flags);
+ else
+ /* clear V4L2_CTRL_FLAG_GRABBED */
+ old = test_and_clear_bit(1, &ctrl->flags);
+ if (old != grabbed)
+ send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
+}
+EXPORT_SYMBOL(__v4l2_ctrl_grab);
+
+/* Log the control name and value */
+static void log_ctrl(const struct v4l2_ctrl *ctrl,
+ const char *prefix, const char *colon)
+{
+ if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY))
+ return;
+ if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
+ return;
+
+ pr_info("%s%s%s: ", prefix, colon, ctrl->name);
+
+ ctrl->type_ops->log(ctrl);
+
+ if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE |
+ V4L2_CTRL_FLAG_GRABBED |
+ V4L2_CTRL_FLAG_VOLATILE)) {
+ if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
+ pr_cont(" inactive");
+ if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)
+ pr_cont(" grabbed");
+ if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE)
+ pr_cont(" volatile");
+ }
+ pr_cont("\n");
+}
+
+/* Log all controls owned by the handler */
+void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
+ const char *prefix)
+{
+ struct v4l2_ctrl *ctrl;
+ const char *colon = "";
+ int len;
+
+ if (hdl == NULL)
+ return;
+ if (prefix == NULL)
+ prefix = "";
+ len = strlen(prefix);
+ if (len && prefix[len - 1] != ' ')
+ colon = ": ";
+ mutex_lock(hdl->lock);
+ list_for_each_entry(ctrl, &hdl->ctrls, node)
+ if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
+ log_ctrl(ctrl, prefix, colon);
+ mutex_unlock(hdl->lock);
+}
+EXPORT_SYMBOL(v4l2_ctrl_handler_log_status);
+
+int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd)
+{
+ v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status);
+
+/* Call s_ctrl for all controls owned by the handler */
+int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
+{
+ struct v4l2_ctrl *ctrl;
+ int ret = 0;
+
+ if (hdl == NULL)
+ return 0;
+
+ lockdep_assert_held(hdl->lock);
+
+ list_for_each_entry(ctrl, &hdl->ctrls, node)
+ ctrl->done = false;
+
+ list_for_each_entry(ctrl, &hdl->ctrls, node) {
+ struct v4l2_ctrl *master = ctrl->cluster[0];
+ int i;
+
+ /* Skip if this control was already handled by a cluster. */
+ /* Skip button controls and read-only controls. */
+ if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
+ (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
+ continue;
+
+ for (i = 0; i < master->ncontrols; i++) {
+ if (master->cluster[i]) {
+ cur_to_new(master->cluster[i]);
+ master->cluster[i]->is_new = 1;
+ master->cluster[i]->done = true;
+ }
+ }
+ ret = call_op(master, s_ctrl);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup);
+
+int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
+{
+ int ret;
+
+ if (hdl == NULL)
+ return 0;
+
+ mutex_lock(hdl->lock);
+ ret = __v4l2_ctrl_handler_setup(hdl);
+ mutex_unlock(hdl->lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_ctrl_handler_setup);
+
+/* Implement VIDIOC_QUERY_EXT_CTRL */
+int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc)
+{
+ const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND;
+ u32 id = qc->id & V4L2_CTRL_ID_MASK;
+ struct v4l2_ctrl_ref *ref;
+ struct v4l2_ctrl *ctrl;
+
+ if (hdl == NULL)
+ return -EINVAL;
+
+ mutex_lock(hdl->lock);
+
+ /* Try to find it */
+ ref = find_ref(hdl, id);
+
+ if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) {
+ bool is_compound;
+ /* Match any control that is not hidden */
+ unsigned mask = 1;
+ bool match = false;
+
+ if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) {
+ /* Match any hidden control */
+ match = true;
+ } else if ((qc->id & next_flags) == next_flags) {
+ /* Match any control, compound or not */
+ mask = 0;
+ }
+
+ /* Find the next control with ID > qc->id */
+
+ /* Did we reach the end of the control list? */
+ if (id >= node2id(hdl->ctrl_refs.prev)) {
+ ref = NULL; /* Yes, so there is no next control */
+ } else if (ref) {
+ /* We found a control with the given ID, so just get
+ the next valid one in the list. */
+ list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) {
+ is_compound = ref->ctrl->is_array ||
+ ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
+ if (id < ref->ctrl->id &&
+ (is_compound & mask) == match)
+ break;
+ }
+ if (&ref->node == &hdl->ctrl_refs)
+ ref = NULL;
+ } else {
+ /* No control with the given ID exists, so start
+ searching for the next largest ID. We know there
+ is one, otherwise the first 'if' above would have
+ been true. */
+ list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+ is_compound = ref->ctrl->is_array ||
+ ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
+ if (id < ref->ctrl->id &&
+ (is_compound & mask) == match)
+ break;
+ }
+ if (&ref->node == &hdl->ctrl_refs)
+ ref = NULL;
+ }
+ }
+ mutex_unlock(hdl->lock);
+
+ if (!ref)
+ return -EINVAL;
+
+ ctrl = ref->ctrl;
+ memset(qc, 0, sizeof(*qc));
+ if (id >= V4L2_CID_PRIVATE_BASE)
+ qc->id = id;
+ else
+ qc->id = ctrl->id;
+ strscpy(qc->name, ctrl->name, sizeof(qc->name));
+ qc->flags = user_flags(ctrl);
+ qc->type = ctrl->type;
+ qc->elem_size = ctrl->elem_size;
+ qc->elems = ctrl->elems;
+ qc->nr_of_dims = ctrl->nr_of_dims;
+ memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0]));
+ qc->minimum = ctrl->minimum;
+ qc->maximum = ctrl->maximum;
+ qc->default_value = ctrl->default_value;
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU
+ || ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
+ qc->step = 1;
+ else
+ qc->step = ctrl->step;
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_query_ext_ctrl);
+
+/* Implement VIDIOC_QUERYCTRL */
+int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
+{
+ struct v4l2_query_ext_ctrl qec = { qc->id };
+ int rc;
+
+ rc = v4l2_query_ext_ctrl(hdl, &qec);
+ if (rc)
+ return rc;
+
+ qc->id = qec.id;
+ qc->type = qec.type;
+ qc->flags = qec.flags;
+ strscpy(qc->name, qec.name, sizeof(qc->name));
+ switch (qc->type) {
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ case V4L2_CTRL_TYPE_STRING:
+ case V4L2_CTRL_TYPE_BITMASK:
+ qc->minimum = qec.minimum;
+ qc->maximum = qec.maximum;
+ qc->step = qec.step;
+ qc->default_value = qec.default_value;
+ break;
+ default:
+ qc->minimum = 0;
+ qc->maximum = 0;
+ qc->step = 0;
+ qc->default_value = 0;
+ break;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_queryctrl);
+
+/* Implement VIDIOC_QUERYMENU */
+int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
+{
+ struct v4l2_ctrl *ctrl;
+ u32 i = qm->index;
+
+ ctrl = v4l2_ctrl_find(hdl, qm->id);
+ if (!ctrl)
+ return -EINVAL;
+
+ qm->reserved = 0;
+ /* Sanity checks */
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_MENU:
+ if (ctrl->qmenu == NULL)
+ return -EINVAL;
+ break;
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ if (ctrl->qmenu_int == NULL)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (i < ctrl->minimum || i > ctrl->maximum)
+ return -EINVAL;
+
+ /* Use mask to see if this menu item should be skipped */
+ if (ctrl->menu_skip_mask & (1ULL << i))
+ return -EINVAL;
+ /* Empty menu items should also be skipped */
+ if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
+ if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
+ return -EINVAL;
+ strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
+ } else {
+ qm->value = ctrl->qmenu_int[i];
+ }
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_querymenu);
+
+static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_handler *from)
+{
+ struct v4l2_ctrl_ref *ref;
+ int err = 0;
+
+ if (WARN_ON(!hdl || hdl == from))
+ return -EINVAL;
+
+ if (hdl->error)
+ return hdl->error;
+
+ WARN_ON(hdl->lock != &hdl->_lock);
+
+ mutex_lock(from->lock);
+ list_for_each_entry(ref, &from->ctrl_refs, node) {
+ struct v4l2_ctrl *ctrl = ref->ctrl;
+ struct v4l2_ctrl_ref *new_ref;
+
+ /* Skip refs inherited from other devices */
+ if (ref->from_other_dev)
+ continue;
+ err = handler_new_ref(hdl, ctrl, &new_ref, false, true);
+ if (err)
+ break;
+ }
+ mutex_unlock(from->lock);
+ return err;
+}
+
+static void v4l2_ctrl_request_queue(struct media_request_object *obj)
+{
+ struct v4l2_ctrl_handler *hdl =
+ container_of(obj, struct v4l2_ctrl_handler, req_obj);
+ struct v4l2_ctrl_handler *main_hdl = obj->priv;
+
+ mutex_lock(main_hdl->lock);
+ list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued);
+ hdl->request_is_queued = true;
+ mutex_unlock(main_hdl->lock);
+}
+
+static void v4l2_ctrl_request_unbind(struct media_request_object *obj)
+{
+ struct v4l2_ctrl_handler *hdl =
+ container_of(obj, struct v4l2_ctrl_handler, req_obj);
+ struct v4l2_ctrl_handler *main_hdl = obj->priv;
+
+ mutex_lock(main_hdl->lock);
+ list_del_init(&hdl->requests);
+ if (hdl->request_is_queued) {
+ list_del_init(&hdl->requests_queued);
+ hdl->request_is_queued = false;
+ }
+ mutex_unlock(main_hdl->lock);
+}
+
+static void v4l2_ctrl_request_release(struct media_request_object *obj)
+{
+ struct v4l2_ctrl_handler *hdl =
+ container_of(obj, struct v4l2_ctrl_handler, req_obj);
+
+ v4l2_ctrl_handler_free(hdl);
+ kfree(hdl);
+}
+
+static const struct media_request_object_ops req_ops = {
+ .queue = v4l2_ctrl_request_queue,
+ .unbind = v4l2_ctrl_request_unbind,
+ .release = v4l2_ctrl_request_release,
+};
+
+struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req,
+ struct v4l2_ctrl_handler *parent)
+{
+ struct media_request_object *obj;
+
+ if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING &&
+ req->state != MEDIA_REQUEST_STATE_QUEUED))
+ return NULL;
+
+ obj = media_request_object_find(req, &req_ops, parent);
+ if (obj)
+ return container_of(obj, struct v4l2_ctrl_handler, req_obj);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find);
+
+struct v4l2_ctrl *
+v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
+{
+ struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
+
+ return (ref && ref->valid_p_req) ? ref->ctrl : NULL;
+}
+EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find);
+
+static int v4l2_ctrl_request_bind(struct media_request *req,
+ struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ctrl_handler *from)
+{
+ int ret;
+
+ ret = v4l2_ctrl_request_clone(hdl, from);
+
+ if (!ret) {
+ ret = media_request_object_bind(req, &req_ops,
+ from, false, &hdl->req_obj);
+ if (!ret) {
+ mutex_lock(from->lock);
+ list_add_tail(&hdl->requests, &from->requests);
+ mutex_unlock(from->lock);
+ }
+ }
+ return ret;
+}
+
+/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS:
+
+ It is not a fully atomic operation, just best-effort only. After all, if
+ multiple controls have to be set through multiple i2c writes (for example)
+ then some initial writes may succeed while others fail. Thus leaving the
+ system in an inconsistent state. The question is how much effort you are
+ willing to spend on trying to make something atomic that really isn't.
+
+ From the point of view of an application the main requirement is that
+ when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an
+ error should be returned without actually affecting any controls.
+
+ If all the values are correct, then it is acceptable to just give up
+ in case of low-level errors.
+
+ It is important though that the application can tell when only a partial
+ configuration was done. The way we do that is through the error_idx field
+ of struct v4l2_ext_controls: if that is equal to the count field then no
+ controls were affected. Otherwise all controls before that index were
+ successful in performing their 'get' or 'set' operation, the control at
+ the given index failed, and you don't know what happened with the controls
+ after the failed one. Since if they were part of a control cluster they
+ could have been successfully processed (if a cluster member was encountered
+ at index < error_idx), they could have failed (if a cluster member was at
+ error_idx), or they may not have been processed yet (if the first cluster
+ member appeared after error_idx).
+
+ It is all fairly theoretical, though. In practice all you can do is to
+ bail out. If error_idx == count, then it is an application bug. If
+ error_idx < count then it is only an application bug if the error code was
+ EBUSY. That usually means that something started streaming just when you
+ tried to set the controls. In all other cases it is a driver/hardware
+ problem and all you can do is to retry or bail out.
+
+ Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that
+ never modifies controls the error_idx is just set to whatever control
+ has an invalid value.
+ */
+
+/* Prepare for the extended g/s/try functions.
+ Find the controls in the control array and do some basic checks. */
+static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ext_controls *cs,
+ struct v4l2_ctrl_helper *helpers,
+ struct video_device *vdev,
+ bool get)
+{
+ struct v4l2_ctrl_helper *h;
+ bool have_clusters = false;
+ u32 i;
+
+ for (i = 0, h = helpers; i < cs->count; i++, h++) {
+ struct v4l2_ext_control *c = &cs->controls[i];
+ struct v4l2_ctrl_ref *ref;
+ struct v4l2_ctrl *ctrl;
+ u32 id = c->id & V4L2_CTRL_ID_MASK;
+
+ cs->error_idx = i;
+
+ if (cs->which &&
+ cs->which != V4L2_CTRL_WHICH_DEF_VAL &&
+ cs->which != V4L2_CTRL_WHICH_REQUEST_VAL &&
+ V4L2_CTRL_ID2WHICH(id) != cs->which) {
+ dprintk(vdev,
+ "invalid which 0x%x or control id 0x%x\n",
+ cs->which, id);
+ return -EINVAL;
+ }
+
+ /* Old-style private controls are not allowed for
+ extended controls */
+ if (id >= V4L2_CID_PRIVATE_BASE) {
+ dprintk(vdev,
+ "old-style private controls not allowed\n");
+ return -EINVAL;
+ }
+ ref = find_ref_lock(hdl, id);
+ if (ref == NULL) {
+ dprintk(vdev, "cannot find control id 0x%x\n", id);
+ return -EINVAL;
+ }
+ h->ref = ref;
+ ctrl = ref->ctrl;
+ if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) {
+ dprintk(vdev, "control id 0x%x is disabled\n", id);
+ return -EINVAL;
+ }
+
+ if (ctrl->cluster[0]->ncontrols > 1)
+ have_clusters = true;
+ if (ctrl->cluster[0] != ctrl)
+ ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
+ if (ctrl->is_ptr && !ctrl->is_string) {
+ unsigned tot_size = ctrl->elems * ctrl->elem_size;
+
+ if (c->size < tot_size) {
+ /*
+ * In the get case the application first
+ * queries to obtain the size of the control.
+ */
+ if (get) {
+ c->size = tot_size;
+ return -ENOSPC;
+ }
+ dprintk(vdev,
+ "pointer control id 0x%x size too small, %d bytes but %d bytes needed\n",
+ id, c->size, tot_size);
+ return -EFAULT;
+ }
+ c->size = tot_size;
+ }
+ /* Store the ref to the master control of the cluster */
+ h->mref = ref;
+ /* Initially set next to 0, meaning that there is no other
+ control in this helper array belonging to the same
+ cluster */
+ h->next = 0;
+ }
+
+ /* We are done if there were no controls that belong to a multi-
+ control cluster. */
+ if (!have_clusters)
+ return 0;
+
+ /* The code below figures out in O(n) time which controls in the list
+ belong to the same cluster. */
+
+ /* This has to be done with the handler lock taken. */
+ mutex_lock(hdl->lock);
+
+ /* First zero the helper field in the master control references */
+ for (i = 0; i < cs->count; i++)
+ helpers[i].mref->helper = NULL;
+ for (i = 0, h = helpers; i < cs->count; i++, h++) {
+ struct v4l2_ctrl_ref *mref = h->mref;
+
+ /* If the mref->helper is set, then it points to an earlier
+ helper that belongs to the same cluster. */
+ if (mref->helper) {
+ /* Set the next field of mref->helper to the current
+ index: this means that that earlier helper now
+ points to the next helper in the same cluster. */
+ mref->helper->next = i;
+ /* mref should be set only for the first helper in the
+ cluster, clear the others. */
+ h->mref = NULL;
+ }
+ /* Point the mref helper to the current helper struct. */
+ mref->helper = h;
+ }
+ mutex_unlock(hdl->lock);
+ return 0;
+}
+
+/* Handles the corner case where cs->count == 0. It checks whether the
+ specified control class exists. If that class ID is 0, then it checks
+ whether there are any controls at all. */
+static int class_check(struct v4l2_ctrl_handler *hdl, u32 which)
+{
+ if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL ||
+ which == V4L2_CTRL_WHICH_REQUEST_VAL)
+ return 0;
+ return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL;
+}
+
+/*
+ * Get extended controls. Allocates the helpers array if needed.
+ *
+ * Note that v4l2_g_ext_ctrls_common() with 'which' set to
+ * V4L2_CTRL_WHICH_REQUEST_VAL is only called if the request was
+ * completed, and in that case valid_p_req is true for all controls.
+ */
+static int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ext_controls *cs,
+ struct video_device *vdev)
+{
+ struct v4l2_ctrl_helper helper[4];
+ struct v4l2_ctrl_helper *helpers = helper;
+ int ret;
+ int i, j;
+ bool is_default, is_request;
+
+ is_default = (cs->which == V4L2_CTRL_WHICH_DEF_VAL);
+ is_request = (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL);
+
+ cs->error_idx = cs->count;
+ cs->which = V4L2_CTRL_ID2WHICH(cs->which);
+
+ if (hdl == NULL)
+ return -EINVAL;
+
+ if (cs->count == 0)
+ return class_check(hdl, cs->which);
+
+ if (cs->count > ARRAY_SIZE(helper)) {
+ helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
+ GFP_KERNEL);
+ if (helpers == NULL)
+ return -ENOMEM;
+ }
+
+ ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true);
+ cs->error_idx = cs->count;
+
+ for (i = 0; !ret && i < cs->count; i++)
+ if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
+ ret = -EACCES;
+
+ for (i = 0; !ret && i < cs->count; i++) {
+ struct v4l2_ctrl *master;
+ bool is_volatile = false;
+ u32 idx = i;
+
+ if (helpers[i].mref == NULL)
+ continue;
+
+ master = helpers[i].mref->ctrl;
+ cs->error_idx = i;
+
+ v4l2_ctrl_lock(master);
+
+ /*
+ * g_volatile_ctrl will update the new control values.
+ * This makes no sense for V4L2_CTRL_WHICH_DEF_VAL and
+ * V4L2_CTRL_WHICH_REQUEST_VAL. In the case of requests
+ * it is v4l2_ctrl_request_complete() that copies the
+ * volatile controls at the time of request completion
+ * to the request, so you don't want to do that again.
+ */
+ if (!is_default && !is_request &&
+ ((master->flags & V4L2_CTRL_FLAG_VOLATILE) ||
+ (master->has_volatiles && !is_cur_manual(master)))) {
+ for (j = 0; j < master->ncontrols; j++)
+ cur_to_new(master->cluster[j]);
+ ret = call_op(master, g_volatile_ctrl);
+ is_volatile = true;
+ }
+
+ if (ret) {
+ v4l2_ctrl_unlock(master);
+ break;
+ }
+
+ /*
+ * Copy the default value (if is_default is true), the
+ * request value (if is_request is true and p_req is valid),
+ * the new volatile value (if is_volatile is true) or the
+ * current value.
+ */
+ do {
+ struct v4l2_ctrl_ref *ref = helpers[idx].ref;
+
+ if (is_default)
+ ret = def_to_user(cs->controls + idx, ref->ctrl);
+ else if (is_request && ref->valid_p_req)
+ ret = req_to_user(cs->controls + idx, ref);
+ else if (is_volatile)
+ ret = new_to_user(cs->controls + idx, ref->ctrl);
+ else
+ ret = cur_to_user(cs->controls + idx, ref->ctrl);
+ idx = helpers[idx].next;
+ } while (!ret && idx);
+
+ v4l2_ctrl_unlock(master);
+ }
+
+ if (cs->count > ARRAY_SIZE(helper))
+ kvfree(helpers);
+ return ret;
+}
+
+static struct media_request_object *
+v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl,
+ struct media_request *req, bool set)
+{
+ struct media_request_object *obj;
+ struct v4l2_ctrl_handler *new_hdl;
+ int ret;
+
+ if (IS_ERR(req))
+ return ERR_CAST(req);
+
+ if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING))
+ return ERR_PTR(-EBUSY);
+
+ obj = media_request_object_find(req, &req_ops, hdl);
+ if (obj)
+ return obj;
+ if (!set)
+ return ERR_PTR(-ENOENT);
+
+ new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL);
+ if (!new_hdl)
+ return ERR_PTR(-ENOMEM);
+
+ obj = &new_hdl->req_obj;
+ ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8);
+ if (!ret)
+ ret = v4l2_ctrl_request_bind(req, new_hdl, hdl);
+ if (ret) {
+ kfree(new_hdl);
+
+ return ERR_PTR(ret);
+ }
+
+ media_request_object_get(obj);
+ return obj;
+}
+
+int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
+ struct media_device *mdev, struct v4l2_ext_controls *cs)
+{
+ struct media_request_object *obj = NULL;
+ struct media_request *req = NULL;
+ int ret;
+
+ if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
+ if (!mdev || cs->request_fd < 0)
+ return -EINVAL;
+
+ req = media_request_get_by_fd(mdev, cs->request_fd);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
+ if (req->state != MEDIA_REQUEST_STATE_COMPLETE) {
+ media_request_put(req);
+ return -EACCES;
+ }
+
+ ret = media_request_lock_for_access(req);
+ if (ret) {
+ media_request_put(req);
+ return ret;
+ }
+
+ obj = v4l2_ctrls_find_req_obj(hdl, req, false);
+ if (IS_ERR(obj)) {
+ media_request_unlock_for_access(req);
+ media_request_put(req);
+ return PTR_ERR(obj);
+ }
+
+ hdl = container_of(obj, struct v4l2_ctrl_handler,
+ req_obj);
+ }
+
+ ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev);
+
+ if (obj) {
+ media_request_unlock_for_access(req);
+ media_request_object_put(obj);
+ media_request_put(req);
+ }
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_g_ext_ctrls);
+
+/* Helper function to get a single control */
+static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
+{
+ struct v4l2_ctrl *master = ctrl->cluster[0];
+ int ret = 0;
+ int i;
+
+ /* Compound controls are not supported. The new_to_user() and
+ * cur_to_user() calls below would need to be modified not to access
+ * userspace memory when called from get_ctrl().
+ */
+ if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64)
+ return -EINVAL;
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
+ return -EACCES;
+
+ v4l2_ctrl_lock(master);
+ /* g_volatile_ctrl will update the current control values */
+ if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+ for (i = 0; i < master->ncontrols; i++)
+ cur_to_new(master->cluster[i]);
+ ret = call_op(master, g_volatile_ctrl);
+ new_to_user(c, ctrl);
+ } else {
+ cur_to_user(c, ctrl);
+ }
+ v4l2_ctrl_unlock(master);
+ return ret;
+}
+
+int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control)
+{
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
+ struct v4l2_ext_control c;
+ int ret;
+
+ if (ctrl == NULL || !ctrl->is_int)
+ return -EINVAL;
+ ret = get_ctrl(ctrl, &c);
+ control->value = c.value;
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_g_ctrl);
+
+s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_ext_control c;
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(!ctrl->is_int))
+ return 0;
+ c.value = 0;
+ get_ctrl(ctrl, &c);
+ return c.value;
+}
+EXPORT_SYMBOL(v4l2_ctrl_g_ctrl);
+
+s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_ext_control c;
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
+ return 0;
+ c.value64 = 0;
+ get_ctrl(ctrl, &c);
+ return c.value64;
+}
+EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64);
+
+
+/* Core function that calls try/s_ctrl and ensures that the new value is
+ copied to the current value on a set.
+ Must be called with ctrl->handler->lock held. */
+static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,
+ bool set, u32 ch_flags)
+{
+ bool update_flag;
+ int ret;
+ int i;
+
+ /* Go through the cluster and either validate the new value or
+ (if no new value was set), copy the current value to the new
+ value, ensuring a consistent view for the control ops when
+ called. */
+ for (i = 0; i < master->ncontrols; i++) {
+ struct v4l2_ctrl *ctrl = master->cluster[i];
+
+ if (ctrl == NULL)
+ continue;
+
+ if (!ctrl->is_new) {
+ cur_to_new(ctrl);
+ continue;
+ }
+ /* Check again: it may have changed since the
+ previous check in try_or_set_ext_ctrls(). */
+ if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
+ return -EBUSY;
+ }
+
+ ret = call_op(master, try_ctrl);
+
+ /* Don't set if there is no change */
+ if (ret || !set || !cluster_changed(master))
+ return ret;
+ ret = call_op(master, s_ctrl);
+ if (ret)
+ return ret;
+
+ /* If OK, then make the new values permanent. */
+ update_flag = is_cur_manual(master) != is_new_manual(master);
+
+ for (i = 0; i < master->ncontrols; i++) {
+ /*
+ * If we switch from auto to manual mode, and this cluster
+ * contains volatile controls, then all non-master controls
+ * have to be marked as changed. The 'new' value contains
+ * the volatile value (obtained by update_from_auto_cluster),
+ * which now has to become the current value.
+ */
+ if (i && update_flag && is_new_manual(master) &&
+ master->has_volatiles && master->cluster[i])
+ master->cluster[i]->has_changed = true;
+
+ new_to_cur(fh, master->cluster[i], ch_flags |
+ ((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0));
+ }
+ return 0;
+}
+
+/* Validate controls. */
+static int validate_ctrls(struct v4l2_ext_controls *cs,
+ struct v4l2_ctrl_helper *helpers,
+ struct video_device *vdev,
+ bool set)
+{
+ unsigned i;
+ int ret = 0;
+
+ cs->error_idx = cs->count;
+ for (i = 0; i < cs->count; i++) {
+ struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl;
+ union v4l2_ctrl_ptr p_new;
+
+ cs->error_idx = i;
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) {
+ dprintk(vdev,
+ "control id 0x%x is read-only\n",
+ ctrl->id);
+ return -EACCES;
+ }
+ /* This test is also done in try_set_control_cluster() which
+ is called in atomic context, so that has the final say,
+ but it makes sense to do an up-front check as well. Once
+ an error occurs in try_set_control_cluster() some other
+ controls may have been set already and we want to do a
+ best-effort to avoid that. */
+ if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) {
+ dprintk(vdev,
+ "control id 0x%x is grabbed, cannot set\n",
+ ctrl->id);
+ return -EBUSY;
+ }
+ /*
+ * Skip validation for now if the payload needs to be copied
+ * from userspace into kernelspace. We'll validate those later.
+ */
+ if (ctrl->is_ptr)
+ continue;
+ if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+ p_new.p_s64 = &cs->controls[i].value64;
+ else
+ p_new.p_s32 = &cs->controls[i].value;
+ ret = validate_new(ctrl, p_new);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+
+/* Obtain the current volatile values of an autocluster and mark them
+ as new. */
+static void update_from_auto_cluster(struct v4l2_ctrl *master)
+{
+ int i;
+
+ for (i = 1; i < master->ncontrols; i++)
+ cur_to_new(master->cluster[i]);
+ if (!call_op(master, g_volatile_ctrl))
+ for (i = 1; i < master->ncontrols; i++)
+ if (master->cluster[i])
+ master->cluster[i]->is_new = 1;
+}
+
+/* Try or try-and-set controls */
+static int try_set_ext_ctrls_common(struct v4l2_fh *fh,
+ struct v4l2_ctrl_handler *hdl,
+ struct v4l2_ext_controls *cs,
+ struct video_device *vdev, bool set)
+{
+ struct v4l2_ctrl_helper helper[4];
+ struct v4l2_ctrl_helper *helpers = helper;
+ unsigned i, j;
+ int ret;
+
+ cs->error_idx = cs->count;
+
+ /* Default value cannot be changed */
+ if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) {
+ dprintk(vdev, "%s: cannot change default value\n",
+ video_device_node_name(vdev));
+ return -EINVAL;
+ }
+
+ cs->which = V4L2_CTRL_ID2WHICH(cs->which);
+
+ if (hdl == NULL) {
+ dprintk(vdev, "%s: invalid null control handler\n",
+ video_device_node_name(vdev));
+ return -EINVAL;
+ }
+
+ if (cs->count == 0)
+ return class_check(hdl, cs->which);
+
+ if (cs->count > ARRAY_SIZE(helper)) {
+ helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
+ GFP_KERNEL);
+ if (!helpers)
+ return -ENOMEM;
+ }
+ ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false);
+ if (!ret)
+ ret = validate_ctrls(cs, helpers, vdev, set);
+ if (ret && set)
+ cs->error_idx = cs->count;
+ for (i = 0; !ret && i < cs->count; i++) {
+ struct v4l2_ctrl *master;
+ u32 idx = i;
+
+ if (helpers[i].mref == NULL)
+ continue;
+
+ cs->error_idx = i;
+ master = helpers[i].mref->ctrl;
+ v4l2_ctrl_lock(master);
+
+ /* Reset the 'is_new' flags of the cluster */
+ for (j = 0; j < master->ncontrols; j++)
+ if (master->cluster[j])
+ master->cluster[j]->is_new = 0;
+
+ /* For volatile autoclusters that are currently in auto mode
+ we need to discover if it will be set to manual mode.
+ If so, then we have to copy the current volatile values
+ first since those will become the new manual values (which
+ may be overwritten by explicit new values from this set
+ of controls). */
+ if (master->is_auto && master->has_volatiles &&
+ !is_cur_manual(master)) {
+ /* Pick an initial non-manual value */
+ s32 new_auto_val = master->manual_mode_value + 1;
+ u32 tmp_idx = idx;
+
+ do {
+ /* Check if the auto control is part of the
+ list, and remember the new value. */
+ if (helpers[tmp_idx].ref->ctrl == master)
+ new_auto_val = cs->controls[tmp_idx].value;
+ tmp_idx = helpers[tmp_idx].next;
+ } while (tmp_idx);
+ /* If the new value == the manual value, then copy
+ the current volatile values. */
+ if (new_auto_val == master->manual_mode_value)
+ update_from_auto_cluster(master);
+ }
+
+ /* Copy the new caller-supplied control values.
+ user_to_new() sets 'is_new' to 1. */
+ do {
+ struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl;
+
+ ret = user_to_new(cs->controls + idx, ctrl);
+ if (!ret && ctrl->is_ptr) {
+ ret = validate_new(ctrl, ctrl->p_new);
+ if (ret)
+ dprintk(vdev,
+ "failed to validate control %s (%d)\n",
+ v4l2_ctrl_get_name(ctrl->id), ret);
+ }
+ idx = helpers[idx].next;
+ } while (!ret && idx);
+
+ if (!ret)
+ ret = try_or_set_cluster(fh, master,
+ !hdl->req_obj.req && set, 0);
+ if (!ret && hdl->req_obj.req && set) {
+ for (j = 0; j < master->ncontrols; j++) {
+ struct v4l2_ctrl_ref *ref =
+ find_ref(hdl, master->cluster[j]->id);
+
+ new_to_req(ref);
+ }
+ }
+
+ /* Copy the new values back to userspace. */
+ if (!ret) {
+ idx = i;
+ do {
+ ret = new_to_user(cs->controls + idx,
+ helpers[idx].ref->ctrl);
+ idx = helpers[idx].next;
+ } while (!ret && idx);
+ }
+ v4l2_ctrl_unlock(master);
+ }
+
+ if (cs->count > ARRAY_SIZE(helper))
+ kvfree(helpers);
+ return ret;
+}
+
+static int try_set_ext_ctrls(struct v4l2_fh *fh,
+ struct v4l2_ctrl_handler *hdl,
+ struct video_device *vdev,
+ struct media_device *mdev,
+ struct v4l2_ext_controls *cs, bool set)
+{
+ struct media_request_object *obj = NULL;
+ struct media_request *req = NULL;
+ int ret;
+
+ if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
+ if (!mdev) {
+ dprintk(vdev, "%s: missing media device\n",
+ video_device_node_name(vdev));
+ return -EINVAL;
+ }
+
+ if (cs->request_fd < 0) {
+ dprintk(vdev, "%s: invalid request fd %d\n",
+ video_device_node_name(vdev), cs->request_fd);
+ return -EINVAL;
+ }
+
+ req = media_request_get_by_fd(mdev, cs->request_fd);
+ if (IS_ERR(req)) {
+ dprintk(vdev, "%s: cannot find request fd %d\n",
+ video_device_node_name(vdev), cs->request_fd);
+ return PTR_ERR(req);
+ }
+
+ ret = media_request_lock_for_update(req);
+ if (ret) {
+ dprintk(vdev, "%s: cannot lock request fd %d\n",
+ video_device_node_name(vdev), cs->request_fd);
+ media_request_put(req);
+ return ret;
+ }
+
+ obj = v4l2_ctrls_find_req_obj(hdl, req, set);
+ if (IS_ERR(obj)) {
+ dprintk(vdev,
+ "%s: cannot find request object for request fd %d\n",
+ video_device_node_name(vdev),
+ cs->request_fd);
+ media_request_unlock_for_update(req);
+ media_request_put(req);
+ return PTR_ERR(obj);
+ }
+ hdl = container_of(obj, struct v4l2_ctrl_handler,
+ req_obj);
+ }
+
+ ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set);
+ if (ret)
+ dprintk(vdev,
+ "%s: try_set_ext_ctrls_common failed (%d)\n",
+ video_device_node_name(vdev), ret);
+
+ if (obj) {
+ media_request_unlock_for_update(req);
+ media_request_object_put(obj);
+ media_request_put(req);
+ }
+
+ return ret;
+}
+
+int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl,
+ struct video_device *vdev,
+ struct media_device *mdev,
+ struct v4l2_ext_controls *cs)
+{
+ return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false);
+}
+EXPORT_SYMBOL(v4l2_try_ext_ctrls);
+
+int v4l2_s_ext_ctrls(struct v4l2_fh *fh,
+ struct v4l2_ctrl_handler *hdl,
+ struct video_device *vdev,
+ struct media_device *mdev,
+ struct v4l2_ext_controls *cs)
+{
+ return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true);
+}
+EXPORT_SYMBOL(v4l2_s_ext_ctrls);
+
+/* Helper function for VIDIOC_S_CTRL compatibility */
+static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
+{
+ struct v4l2_ctrl *master = ctrl->cluster[0];
+ int ret;
+ int i;
+
+ /* Reset the 'is_new' flags of the cluster */
+ for (i = 0; i < master->ncontrols; i++)
+ if (master->cluster[i])
+ master->cluster[i]->is_new = 0;
+
+ ret = validate_new(ctrl, ctrl->p_new);
+ if (ret)
+ return ret;
+
+ /* For autoclusters with volatiles that are switched from auto to
+ manual mode we have to update the current volatile values since
+ those will become the initial manual values after such a switch. */
+ if (master->is_auto && master->has_volatiles && ctrl == master &&
+ !is_cur_manual(master) && ctrl->val == master->manual_mode_value)
+ update_from_auto_cluster(master);
+
+ ctrl->is_new = 1;
+ return try_or_set_cluster(fh, master, true, ch_flags);
+}
+
+/* Helper function for VIDIOC_S_CTRL compatibility */
+static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl,
+ struct v4l2_ext_control *c)
+{
+ int ret;
+
+ v4l2_ctrl_lock(ctrl);
+ user_to_new(c, ctrl);
+ ret = set_ctrl(fh, ctrl, 0);
+ if (!ret)
+ cur_to_user(c, ctrl);
+ v4l2_ctrl_unlock(ctrl);
+ return ret;
+}
+
+int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
+ struct v4l2_control *control)
+{
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
+ struct v4l2_ext_control c = { control->id };
+ int ret;
+
+ if (ctrl == NULL || !ctrl->is_int)
+ return -EINVAL;
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
+ return -EACCES;
+
+ c.value = control->value;
+ ret = set_ctrl_lock(fh, ctrl, &c);
+ control->value = c.value;
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_s_ctrl);
+
+int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
+{
+ lockdep_assert_held(ctrl->handler->lock);
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(!ctrl->is_int))
+ return -EINVAL;
+ ctrl->val = val;
+ return set_ctrl(NULL, ctrl, 0);
+}
+EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl);
+
+int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val)
+{
+ lockdep_assert_held(ctrl->handler->lock);
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
+ return -EINVAL;
+ *ctrl->p_new.p_s64 = val;
+ return set_ctrl(NULL, ctrl, 0);
+}
+EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64);
+
+int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s)
+{
+ lockdep_assert_held(ctrl->handler->lock);
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING))
+ return -EINVAL;
+ strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1);
+ return set_ctrl(NULL, ctrl, 0);
+}
+EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string);
+
+int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl,
+ enum v4l2_ctrl_type type, const void *p)
+{
+ lockdep_assert_held(ctrl->handler->lock);
+
+ /* It's a driver bug if this happens. */
+ if (WARN_ON(ctrl->type != type))
+ return -EINVAL;
+ memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size);
+ return set_ctrl(NULL, ctrl, 0);
+}
+EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound);
+
+void v4l2_ctrl_request_complete(struct media_request *req,
+ struct v4l2_ctrl_handler *main_hdl)
+{
+ struct media_request_object *obj;
+ struct v4l2_ctrl_handler *hdl;
+ struct v4l2_ctrl_ref *ref;
+
+ if (!req || !main_hdl)
+ return;
+
+ /*
+ * Note that it is valid if nothing was found. It means
+ * that this request doesn't have any controls and so just
+ * wants to leave the controls unchanged.
+ */
+ obj = media_request_object_find(req, &req_ops, main_hdl);
+ if (!obj)
+ return;
+ hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
+
+ list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+ struct v4l2_ctrl *ctrl = ref->ctrl;
+ struct v4l2_ctrl *master = ctrl->cluster[0];
+ unsigned int i;
+
+ if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
+ v4l2_ctrl_lock(master);
+ /* g_volatile_ctrl will update the current control values */
+ for (i = 0; i < master->ncontrols; i++)
+ cur_to_new(master->cluster[i]);
+ call_op(master, g_volatile_ctrl);
+ new_to_req(ref);
+ v4l2_ctrl_unlock(master);
+ continue;
+ }
+ if (ref->valid_p_req)
+ continue;
+
+ /* Copy the current control value into the request */
+ v4l2_ctrl_lock(ctrl);
+ cur_to_req(ref);
+ v4l2_ctrl_unlock(ctrl);
+ }
+
+ mutex_lock(main_hdl->lock);
+ WARN_ON(!hdl->request_is_queued);
+ list_del_init(&hdl->requests_queued);
+ hdl->request_is_queued = false;
+ mutex_unlock(main_hdl->lock);
+ media_request_object_complete(obj);
+ media_request_object_put(obj);
+}
+EXPORT_SYMBOL(v4l2_ctrl_request_complete);
+
+int v4l2_ctrl_request_setup(struct media_request *req,
+ struct v4l2_ctrl_handler *main_hdl)
+{
+ struct media_request_object *obj;
+ struct v4l2_ctrl_handler *hdl;
+ struct v4l2_ctrl_ref *ref;
+ int ret = 0;
+
+ if (!req || !main_hdl)
+ return 0;
+
+ if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
+ return -EBUSY;
+
+ /*
+ * Note that it is valid if nothing was found. It means
+ * that this request doesn't have any controls and so just
+ * wants to leave the controls unchanged.
+ */
+ obj = media_request_object_find(req, &req_ops, main_hdl);
+ if (!obj)
+ return 0;
+ if (obj->completed) {
+ media_request_object_put(obj);
+ return -EBUSY;
+ }
+ hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
+
+ list_for_each_entry(ref, &hdl->ctrl_refs, node)
+ ref->req_done = false;
+
+ list_for_each_entry(ref, &hdl->ctrl_refs, node) {
+ struct v4l2_ctrl *ctrl = ref->ctrl;
+ struct v4l2_ctrl *master = ctrl->cluster[0];
+ bool have_new_data = false;
+ int i;
+
+ /*
+ * Skip if this control was already handled by a cluster.
+ * Skip button controls and read-only controls.
+ */
+ if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
+ continue;
+
+ v4l2_ctrl_lock(master);
+ for (i = 0; i < master->ncontrols; i++) {
+ if (master->cluster[i]) {
+ struct v4l2_ctrl_ref *r =
+ find_ref(hdl, master->cluster[i]->id);
+
+ if (r->valid_p_req) {
+ have_new_data = true;
+ break;
+ }
+ }
+ }
+ if (!have_new_data) {
+ v4l2_ctrl_unlock(master);
+ continue;
+ }
+
+ for (i = 0; i < master->ncontrols; i++) {
+ if (master->cluster[i]) {
+ struct v4l2_ctrl_ref *r =
+ find_ref(hdl, master->cluster[i]->id);
+
+ req_to_new(r);
+ master->cluster[i]->is_new = 1;
+ r->req_done = true;
+ }
+ }
+ /*
+ * For volatile autoclusters that are currently in auto mode
+ * we need to discover if it will be set to manual mode.
+ * If so, then we have to copy the current volatile values
+ * first since those will become the new manual values (which
+ * may be overwritten by explicit new values from this set
+ * of controls).
+ */
+ if (master->is_auto && master->has_volatiles &&
+ !is_cur_manual(master)) {
+ s32 new_auto_val = *master->p_new.p_s32;
+
+ /*
+ * If the new value == the manual value, then copy
+ * the current volatile values.
+ */
+ if (new_auto_val == master->manual_mode_value)
+ update_from_auto_cluster(master);
+ }
+
+ ret = try_or_set_cluster(NULL, master, true, 0);
+ v4l2_ctrl_unlock(master);
+
+ if (ret)
+ break;
+ }
+
+ media_request_object_put(obj);
+ return ret;
+}
+EXPORT_SYMBOL(v4l2_ctrl_request_setup);
+
+void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv)
+{
+ if (ctrl == NULL)
+ return;
+ if (notify == NULL) {
+ ctrl->call_notify = 0;
+ return;
+ }
+ if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify))
+ return;
+ ctrl->handler->notify = notify;
+ ctrl->handler->notify_priv = priv;
+ ctrl->call_notify = 1;
+}
+EXPORT_SYMBOL(v4l2_ctrl_notify);
+
+int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
+ s64 min, s64 max, u64 step, s64 def)
+{
+ bool value_changed;
+ bool range_changed = false;
+ int ret;
+
+ lockdep_assert_held(ctrl->handler->lock);
+
+ switch (ctrl->type) {
+ case V4L2_CTRL_TYPE_INTEGER:
+ case V4L2_CTRL_TYPE_INTEGER64:
+ case V4L2_CTRL_TYPE_BOOLEAN:
+ case V4L2_CTRL_TYPE_MENU:
+ case V4L2_CTRL_TYPE_INTEGER_MENU:
+ case V4L2_CTRL_TYPE_BITMASK:
+ case V4L2_CTRL_TYPE_U8:
+ case V4L2_CTRL_TYPE_U16:
+ case V4L2_CTRL_TYPE_U32:
+ if (ctrl->is_array)
+ return -EINVAL;
+ ret = check_range(ctrl->type, min, max, step, def);
+ if (ret)
+ return ret;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if ((ctrl->minimum != min) || (ctrl->maximum != max) ||
+ (ctrl->step != step) || ctrl->default_value != def) {
+ range_changed = true;
+ ctrl->minimum = min;
+ ctrl->maximum = max;
+ ctrl->step = step;
+ ctrl->default_value = def;
+ }
+ cur_to_new(ctrl);
+ if (validate_new(ctrl, ctrl->p_new)) {
+ if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+ *ctrl->p_new.p_s64 = def;
+ else
+ *ctrl->p_new.p_s32 = def;
+ }
+
+ if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
+ value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64;
+ else
+ value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32;
+ if (value_changed)
+ ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
+ else if (range_changed)
+ send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
+ return ret;
+}
+EXPORT_SYMBOL(__v4l2_ctrl_modify_range);
+
+static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
+{
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
+
+ if (ctrl == NULL)
+ return -EINVAL;
+
+ v4l2_ctrl_lock(ctrl);
+ list_add_tail(&sev->node, &ctrl->ev_subs);
+ if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS &&
+ (sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) {
+ struct v4l2_event ev;
+ u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
+
+ if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
+ changes |= V4L2_EVENT_CTRL_CH_VALUE;
+ fill_event(&ev, ctrl, changes);
+ /* Mark the queue as active, allowing this initial
+ event to be accepted. */
+ sev->elems = elems;
+ v4l2_event_queue_fh(sev->fh, &ev);
+ }
+ v4l2_ctrl_unlock(ctrl);
+ return 0;
+}
+
+static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev)
+{
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
+
+ if (ctrl == NULL)
+ return;
+
+ v4l2_ctrl_lock(ctrl);
+ list_del(&sev->node);
+ v4l2_ctrl_unlock(ctrl);
+}
+
+void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new)
+{
+ u32 old_changes = old->u.ctrl.changes;
+
+ old->u.ctrl = new->u.ctrl;
+ old->u.ctrl.changes |= old_changes;
+}
+EXPORT_SYMBOL(v4l2_ctrl_replace);
+
+void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new)
+{
+ new->u.ctrl.changes |= old->u.ctrl.changes;
+}
+EXPORT_SYMBOL(v4l2_ctrl_merge);
+
+const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = {
+ .add = v4l2_ctrl_add_event,
+ .del = v4l2_ctrl_del_event,
+ .replace = v4l2_ctrl_replace,
+ .merge = v4l2_ctrl_merge,
+};
+EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops);
+
+int v4l2_ctrl_log_status(struct file *file, void *fh)
+{
+ struct video_device *vfd = video_devdata(file);
+ struct v4l2_fh *vfh = file->private_data;
+
+ if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev)
+ v4l2_ctrl_handler_log_status(vfh->ctrl_handler,
+ vfd->v4l2_dev->name);
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_ctrl_log_status);
+
+int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ if (sub->type == V4L2_EVENT_CTRL)
+ return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops);
+ return -EINVAL;
+}
+EXPORT_SYMBOL(v4l2_ctrl_subscribe_event);
+
+int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
+ struct v4l2_event_subscription *sub)
+{
+ if (!sd->ctrl_handler)
+ return -EINVAL;
+ return v4l2_ctrl_subscribe_event(fh, sub);
+}
+EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event);
+
+__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ poll_wait(file, &fh->wait, wait);
+ if (v4l2_event_pending(fh))
+ return EPOLLPRI;
+ return 0;
+}
+EXPORT_SYMBOL(v4l2_ctrl_poll);
+
+int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,
+ const struct v4l2_ctrl_ops *ctrl_ops,
+ const struct v4l2_fwnode_device_properties *p)
+{
+ if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) {
+ u32 orientation_ctrl;
+
+ switch (p->orientation) {
+ case V4L2_FWNODE_ORIENTATION_FRONT:
+ orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT;
+ break;
+ case V4L2_FWNODE_ORIENTATION_BACK:
+ orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK;
+ break;
+ case V4L2_FWNODE_ORIENTATION_EXTERNAL:
+ orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops,
+ V4L2_CID_CAMERA_ORIENTATION,
+ V4L2_CAMERA_ORIENTATION_EXTERNAL, 0,
+ orientation_ctrl))
+ return hdl->error;
+ }
+
+ if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) {
+ if (!v4l2_ctrl_new_std(hdl, ctrl_ops,
+ V4L2_CID_CAMERA_SENSOR_ROTATION,
+ p->rotation, p->rotation, 1,
+ p->rotation))
+ return hdl->error;
+ }
+
+ return hdl->error;
+}
+EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties);
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -926,6 +926,7 @@ enum v4l2_auto_n_preset_white_balance {
V4L2_WHITE_BALANCE_FLASH = 7,
V4L2_WHITE_BALANCE_CLOUDY = 8,
V4L2_WHITE_BALANCE_SHADE = 9,
+ V4L2_WHITE_BALANCE_GREYWORLD = 10,
};
#define V4L2_CID_WIDE_DYNAMIC_RANGE (V4L2_CID_CAMERA_CLASS_BASE+21)
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