188 lines
4.9 KiB
Diff
188 lines
4.9 KiB
Diff
From e4d708702e6c98f2111e33201a264d6788564cb2 Mon Sep 17 00:00:00 2001
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From: OpenWrt community <openwrt-devel@lists.openwrt.org>
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Date: Fri, 12 May 2023 11:08:43 +0200
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Subject: [PATCH] ssb_sprom: add generic kernel support for Broadcom Fallback SPROMs
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---
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drivers/bcma/Kconfig | 4 ++++
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drivers/bcma/Makefile | 1 +
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drivers/bcma/bcma_private.h | 4 ++++
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drivers/bcma/main.c | 8 ++++++++
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drivers/bcma/sprom.c | 23 ++++++++++++++---------
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drivers/ssb/Kconfig | 5 +++++
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drivers/ssb/Makefile | 1 +
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drivers/ssb/main.c | 8 ++++++++
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drivers/ssb/sprom.c | 12 +++++++++++-
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drivers/ssb/ssb_private.h | 4 ++++
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10 files changed, 60 insertions(+), 10 deletions(-)
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--- a/drivers/bcma/Kconfig
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+++ b/drivers/bcma/Kconfig
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@@ -18,6 +18,10 @@ config BCMA_BLOCKIO
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bool
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default y
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+config BCMA_FALLBACK_SPROM
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+ bool
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+ default y
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+
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config BCMA_HOST_PCI_POSSIBLE
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bool
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depends on PCI = y
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--- a/drivers/bcma/Makefile
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+++ b/drivers/bcma/Makefile
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@@ -11,6 +11,7 @@ bcma-$(CONFIG_BCMA_DRIVER_PCI_HOSTMODE)
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bcma-$(CONFIG_BCMA_DRIVER_MIPS) += driver_mips.o
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bcma-$(CONFIG_BCMA_DRIVER_GMAC_CMN) += driver_gmac_cmn.o
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bcma-$(CONFIG_BCMA_DRIVER_GPIO) += driver_gpio.o
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+bcma-$(CONFIG_BCMA_FALLBACK_SPROM) += fallback-sprom.o
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bcma-$(CONFIG_BCMA_HOST_PCI) += host_pci.o
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bcma-$(CONFIG_BCMA_HOST_SOC) += host_soc.o
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obj-$(CONFIG_BCMA) += bcma.o
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--- a/drivers/bcma/bcma_private.h
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+++ b/drivers/bcma/bcma_private.h
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@@ -38,6 +38,10 @@ int bcma_bus_resume(struct bcma_bus *bus
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void bcma_detect_chip(struct bcma_bus *bus);
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int bcma_bus_scan(struct bcma_bus *bus);
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+/* fallback-sprom.c */
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+int __init bcma_fbs_register(void);
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+int bcma_get_fallback_sprom(struct bcma_bus *dev, struct ssb_sprom *out);
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+
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/* sprom.c */
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int bcma_sprom_get(struct bcma_bus *bus);
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--- a/drivers/bcma/main.c
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+++ b/drivers/bcma/main.c
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@@ -668,6 +668,14 @@ static int __init bcma_modinit(void)
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{
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int err;
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+#ifdef CONFIG_BCMA_FALLBACK_SPROM
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+ err = bcma_fbs_register();
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+ if (err) {
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+ pr_err("Fallback SPROM initialization failed\n");
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+ err = 0;
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+ }
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+#endif /* CONFIG_BCMA_FALLBACK_SPROM */
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+
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err = bcma_init_bus_register();
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if (err)
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return err;
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--- a/drivers/bcma/sprom.c
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+++ b/drivers/bcma/sprom.c
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@@ -51,21 +51,26 @@ static int bcma_fill_sprom_with_fallback
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{
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int err;
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- if (!get_fallback_sprom) {
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+ if (get_fallback_sprom)
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+ err = get_fallback_sprom(bus, out);
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+
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+#ifdef CONFIG_BCMA_FALLBACK_SPROM
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+ if (!get_fallback_sprom || err)
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+ err = bcma_get_fallback_sprom(bus, out);
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+#else
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+ if (!get_fallback_sprom)
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err = -ENOENT;
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- goto fail;
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- }
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+#endif /* CONFIG_BCMA_FALLBACK_SPROM */
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- err = get_fallback_sprom(bus, out);
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- if (err)
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- goto fail;
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+ if (err) {
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+ bcma_warn(bus, "Using fallback SPROM failed (err %d)\n", err);
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+ return err;
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+ }
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bcma_debug(bus, "Using SPROM revision %d provided by platform.\n",
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bus->sprom.revision);
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+
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return 0;
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-fail:
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- bcma_warn(bus, "Using fallback SPROM failed (err %d)\n", err);
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- return err;
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}
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/**************************************************
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--- a/drivers/ssb/Kconfig
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+++ b/drivers/ssb/Kconfig
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@@ -25,6 +25,11 @@ if SSB
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config SSB_SPROM
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bool
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+config SSB_FALLBACK_SPROM
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+ bool
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+ depends on SSB_PCIHOST
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+ default y
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+
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# Support for Block-I/O. SELECT this from the driver that needs it.
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config SSB_BLOCKIO
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bool
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--- a/drivers/ssb/Makefile
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+++ b/drivers/ssb/Makefile
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@@ -2,6 +2,7 @@
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# core
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ssb-y += main.o scan.o
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ssb-$(CONFIG_SSB_EMBEDDED) += embedded.o
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+ssb-$(CONFIG_SSB_FALLBACK_SPROM) += fallback-sprom.o
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ssb-$(CONFIG_SSB_SPROM) += sprom.o
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# host support
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--- a/drivers/ssb/main.c
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+++ b/drivers/ssb/main.c
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@@ -1287,6 +1287,14 @@ static int __init ssb_modinit(void)
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{
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int err;
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+#ifdef CONFIG_SSB_FALLBACK_SPROM
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+ err = ssb_fbs_register();
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+ if (err) {
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+ pr_err("Fallback SPROM initialization failed\n");
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+ err = 0;
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+ }
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+#endif /* CONFIG_SSB_FALLBACK_SPROM */
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+
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/* See the comment at the ssb_is_early_boot definition */
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ssb_is_early_boot = 0;
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err = bus_register(&ssb_bustype);
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--- a/drivers/ssb/sprom.c
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+++ b/drivers/ssb/sprom.c
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@@ -180,10 +180,20 @@ int ssb_arch_register_fallback_sprom(int
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int ssb_fill_sprom_with_fallback(struct ssb_bus *bus, struct ssb_sprom *out)
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{
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+ int err;
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+
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+ if (get_fallback_sprom)
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+ err = get_fallback_sprom(bus, out);
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+
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+#ifdef CONFIG_SSB_FALLBACK_SPROM
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+ if (!get_fallback_sprom || err)
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+ err = ssb_get_fallback_sprom(bus, out);
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+#else
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if (!get_fallback_sprom)
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return -ENOENT;
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+#endif /* CONFIG_SSB_FALLBACK_SPROM */
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- return get_fallback_sprom(bus, out);
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+ return err;
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}
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/* https://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable */
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--- a/drivers/ssb/ssb_private.h
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+++ b/drivers/ssb/ssb_private.h
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@@ -143,6 +143,10 @@ extern int ssb_bus_scan(struct ssb_bus *
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extern void ssb_iounmap(struct ssb_bus *ssb);
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+/* fallback-sprom.c */
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+int __init ssb_fbs_register(void);
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+int ssb_get_fallback_sprom(struct ssb_bus *dev, struct ssb_sprom *out);
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+
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/* sprom.c */
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extern
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ssize_t ssb_attr_sprom_show(struct ssb_bus *bus, char *buf,
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