112 lines
3.1 KiB
Diff
112 lines
3.1 KiB
Diff
From 659037c028f28ac0f13bd54a55c6c81761fb02ce Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Mon, 22 Nov 2021 12:31:35 +0000
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Subject: [PATCH] media: i2c: ov5647: Add support for regulator
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control.
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The driver supported using GPIOs to control the shutdown line,
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but no regulator control.
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Add regulator hooks.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/media/i2c/ov5647.c | 37 +++++++++++++++++++++++++++++++++++++
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1 file changed, 37 insertions(+)
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--- a/drivers/media/i2c/ov5647.c
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+++ b/drivers/media/i2c/ov5647.c
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@@ -20,6 +20,7 @@
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/pm_runtime.h>
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+#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-ctrls.h>
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@@ -82,6 +83,15 @@
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#define OV5647_EXPOSURE_DEFAULT 1000
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#define OV5647_EXPOSURE_MAX 65535
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+/* regulator supplies */
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+static const char * const ov5647_supply_names[] = {
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+ "avdd", /* Analog power */
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+ "dovdd", /* Digital I/O power */
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+ "dvdd", /* Digital core power */
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+};
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+
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+#define OV5647_NUM_SUPPLIES ARRAY_SIZE(ov5647_supply_names)
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+
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struct regval_list {
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u16 addr;
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u8 data;
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@@ -103,6 +113,7 @@ struct ov5647 {
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struct mutex lock;
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struct clk *xclk;
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struct gpio_desc *pwdn;
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+ struct regulator_bulk_data supplies[OV5647_NUM_SUPPLIES];
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bool clock_ncont;
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struct v4l2_ctrl_handler ctrls;
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const struct ov5647_mode *mode;
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@@ -787,6 +798,12 @@ static int ov5647_power_on(struct device
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dev_dbg(dev, "OV5647 power on\n");
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+ ret = regulator_bulk_enable(OV5647_NUM_SUPPLIES, sensor->supplies);
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+ if (ret < 0) {
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+ dev_err(dev, "Failed to enable regulators\n");
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+ return ret;
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+ }
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+
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if (sensor->pwdn) {
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gpiod_set_value_cansleep(sensor->pwdn, 0);
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msleep(PWDN_ACTIVE_DELAY_MS);
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@@ -818,6 +835,7 @@ error_clk_disable:
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clk_disable_unprepare(sensor->xclk);
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error_pwdn:
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gpiod_set_value_cansleep(sensor->pwdn, 1);
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+ regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies);
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return ret;
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}
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@@ -847,6 +865,7 @@ static int ov5647_power_off(struct devic
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clk_disable_unprepare(sensor->xclk);
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gpiod_set_value_cansleep(sensor->pwdn, 1);
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+ regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies);
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return 0;
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}
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@@ -1347,6 +1366,18 @@ static const struct v4l2_ctrl_ops ov5647
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.s_ctrl = ov5647_s_ctrl,
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};
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+static int ov5647_configure_regulators(struct device *dev,
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+ struct ov5647 *sensor)
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+{
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+ unsigned int i;
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+
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+ for (i = 0; i < OV5647_NUM_SUPPLIES; i++)
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+ sensor->supplies[i].supply = ov5647_supply_names[i];
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+
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+ return devm_regulator_bulk_get(dev, OV5647_NUM_SUPPLIES,
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+ sensor->supplies);
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+}
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+
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static int ov5647_init_controls(struct ov5647 *sensor, struct device *dev)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);
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@@ -1494,6 +1525,12 @@ static int ov5647_probe(struct i2c_clien
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return -EINVAL;
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}
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+ ret = ov5647_configure_regulators(dev, sensor);
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+ if (ret) {
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+ dev_err(dev, "Failed to get power regulators\n");
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+ return ret;
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+ }
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+
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mutex_init(&sensor->lock);
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sensor->mode = OV5647_DEFAULT_MODE;
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