X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0482-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch;fp=target%2Flinux%2Fbrcm2708%2Fpatches-4.19%2F950-0482-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch;h=0000000000000000000000000000000000000000;hb=84d555aa74434392b682fd9eb0fa701c89a046d6;hp=ff15427b5ccc04bafd01fbf1a2f3cf5c83a9faf2;hpb=953973c2991e8640549a55df7a0574a1abac8644;p=openwrt%2Fstaging%2Fchunkeey.git diff --git a/target/linux/brcm2708/patches-4.19/950-0482-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch b/target/linux/brcm2708/patches-4.19/950-0482-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch deleted file mode 100644 index ff15427b5c..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0482-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch +++ /dev/null @@ -1,200 +0,0 @@ -From 90964ab2d00546a59086ffd08964da3d2a5cefc9 Mon Sep 17 00:00:00 2001 -From: Eric Anholt -Date: Wed, 12 Dec 2018 15:51:47 -0800 -Subject: [PATCH] bcm2835-pm: Move bcm2835-watchdog's DT probe to an - MFD. - -The PM block that the wdt driver was binding to actually has multiple -features we want to expose (power domains, reset, watchdog). Move the -DT attachment to a MFD driver and make WDT probe against MFD. - -Signed-off-by: Eric Anholt -Reviewed-by: Guenter Roeck -Acked-by: Stefan Wahren -Signed-off-by: Stefan Wahren -(cherry picked from commit 5e6acc3e678ed3db746ab4fb53a980861cd711b6) ---- - drivers/mfd/Makefile | 1 + - drivers/mfd/bcm2835-pm.c | 64 ++++++++++++++++++++++++++++++++++ - drivers/watchdog/bcm2835_wdt.c | 26 +++++--------- - include/linux/mfd/bcm2835-pm.h | 13 +++++++ - 4 files changed, 87 insertions(+), 17 deletions(-) - create mode 100644 drivers/mfd/bcm2835-pm.c - create mode 100644 include/linux/mfd/bcm2835-pm.h - ---- a/drivers/mfd/Makefile -+++ b/drivers/mfd/Makefile -@@ -10,6 +10,7 @@ obj-$(CONFIG_MFD_88PM805) += 88pm805.o 8 - obj-$(CONFIG_MFD_ACT8945A) += act8945a.o - obj-$(CONFIG_MFD_SM501) += sm501.o - obj-$(CONFIG_MFD_ASIC3) += asic3.o tmio_core.o -+obj-$(CONFIG_ARCH_BCM2835) += bcm2835-pm.o - obj-$(CONFIG_MFD_BCM590XX) += bcm590xx.o - obj-$(CONFIG_MFD_BD9571MWV) += bd9571mwv.o - cros_ec_core-objs := cros_ec.o ---- /dev/null -+++ b/drivers/mfd/bcm2835-pm.c -@@ -0,0 +1,64 @@ -+// SPDX-License-Identifier: GPL-2.0+ -+/* -+ * PM MFD driver for Broadcom BCM2835 -+ * -+ * This driver binds to the PM block and creates the MFD device for -+ * the WDT driver. -+ */ -+ -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+static const struct mfd_cell bcm2835_pm_devs[] = { -+ { .name = "bcm2835-wdt" }, -+}; -+ -+static int bcm2835_pm_probe(struct platform_device *pdev) -+{ -+ struct resource *res; -+ struct device *dev = &pdev->dev; -+ struct bcm2835_pm *pm; -+ -+ pm = devm_kzalloc(dev, sizeof(*pm), GFP_KERNEL); -+ if (!pm) -+ return -ENOMEM; -+ platform_set_drvdata(pdev, pm); -+ -+ pm->dev = dev; -+ -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ pm->base = devm_ioremap_resource(dev, res); -+ if (IS_ERR(pm->base)) -+ return PTR_ERR(pm->base); -+ -+ return devm_mfd_add_devices(dev, -1, -+ bcm2835_pm_devs, ARRAY_SIZE(bcm2835_pm_devs), -+ NULL, 0, NULL); -+} -+ -+static const struct of_device_id bcm2835_pm_of_match[] = { -+ { .compatible = "brcm,bcm2835-pm-wdt", }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, bcm2835_pm_of_match); -+ -+static struct platform_driver bcm2835_pm_driver = { -+ .probe = bcm2835_pm_probe, -+ .driver = { -+ .name = "bcm2835-pm", -+ .of_match_table = bcm2835_pm_of_match, -+ }, -+}; -+module_platform_driver(bcm2835_pm_driver); -+ -+MODULE_AUTHOR("Eric Anholt "); -+MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM MFD"); -+MODULE_LICENSE("GPL"); ---- a/drivers/watchdog/bcm2835_wdt.c -+++ b/drivers/watchdog/bcm2835_wdt.c -@@ -12,6 +12,7 @@ - - #include - #include -+#include - #include - #include - #include -@@ -41,6 +42,8 @@ struct bcm2835_wdt { - spinlock_t lock; - }; - -+static struct bcm2835_wdt *bcm2835_power_off_wdt; -+ - static unsigned int heartbeat; - static bool nowayout = WATCHDOG_NOWAYOUT; - -@@ -163,10 +166,7 @@ static struct watchdog_device bcm2835_wd - */ - static void bcm2835_power_off(void) - { -- struct device_node *np = -- of_find_compatible_node(NULL, NULL, "brcm,bcm2835-pm-wdt"); -- struct platform_device *pdev = of_find_device_by_node(np); -- struct bcm2835_wdt *wdt = platform_get_drvdata(pdev); -+ struct bcm2835_wdt *wdt = bcm2835_power_off_wdt; - - /* Partition 63 tells the firmware that this is a halt */ - __bcm2835_restart(wdt, 63); -@@ -174,7 +174,7 @@ static void bcm2835_power_off(void) - - static int bcm2835_wdt_probe(struct platform_device *pdev) - { -- struct resource *res; -+ struct bcm2835_pm *pm = dev_get_drvdata(pdev->dev.parent); - struct device *dev = &pdev->dev; - struct bcm2835_wdt *wdt; - int err; -@@ -186,10 +186,7 @@ static int bcm2835_wdt_probe(struct plat - - spin_lock_init(&wdt->lock); - -- res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- wdt->base = devm_ioremap_resource(dev, res); -- if (IS_ERR(wdt->base)) -- return PTR_ERR(wdt->base); -+ wdt->base = pm->base; - - watchdog_set_drvdata(&bcm2835_wdt_wdd, wdt); - watchdog_init_timeout(&bcm2835_wdt_wdd, heartbeat, dev); -@@ -216,8 +213,10 @@ static int bcm2835_wdt_probe(struct plat - return err; - } - -- if (pm_power_off == NULL) -+ if (pm_power_off == NULL) { - pm_power_off = bcm2835_power_off; -+ bcm2835_power_off_wdt = wdt; -+ } - - dev_info(dev, "Broadcom BCM2835 watchdog timer"); - return 0; -@@ -231,18 +230,11 @@ static int bcm2835_wdt_remove(struct pla - return 0; - } - --static const struct of_device_id bcm2835_wdt_of_match[] = { -- { .compatible = "brcm,bcm2835-pm-wdt", }, -- {}, --}; --MODULE_DEVICE_TABLE(of, bcm2835_wdt_of_match); -- - static struct platform_driver bcm2835_wdt_driver = { - .probe = bcm2835_wdt_probe, - .remove = bcm2835_wdt_remove, - .driver = { - .name = "bcm2835-wdt", -- .of_match_table = bcm2835_wdt_of_match, - }, - }; - module_platform_driver(bcm2835_wdt_driver); ---- /dev/null -+++ b/include/linux/mfd/bcm2835-pm.h -@@ -0,0 +1,13 @@ -+/* SPDX-License-Identifier: GPL-2.0+ */ -+ -+#ifndef BCM2835_MFD_PM_H -+#define BCM2835_MFD_PM_H -+ -+#include -+ -+struct bcm2835_pm { -+ struct device *dev; -+ void __iomem *base; -+}; -+ -+#endif /* BCM2835_MFD_PM_H */