brcm2708: update to latest patches from RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 200 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0554-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch b/target/linux/brcm2708/patches-4.19/950-0554-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch
new file mode 100644
index 0000000000..a6dee332db
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0554-bcm2835-pm-Move-bcm2835-watchdog-s-DT-probe-to-an-MF.patch
@@ -0,0 +1,200 @@
+From 0718ee0a5ed119e57e69307baced70e1dd2236df Mon Sep 17 00:00:00 2001
+From: Eric Anholt <eric@anholt.net>
+Date: Wed, 12 Dec 2018 15:51:47 -0800
+Subject: [PATCH 554/773] 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 <eric@anholt.net>
+Reviewed-by: Guenter Roeck <linux@roeck-us.net>
+Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
+Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
+(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 <linux/delay.h>
++#include <linux/io.h>
++#include <linux/mfd/bcm2835-pm.h>
++#include <linux/mfd/core.h>
++#include <linux/module.h>
++#include <linux/of_address.h>
++#include <linux/of_platform.h>
++#include <linux/platform_device.h>
++#include <linux/types.h>
++#include <linux/watchdog.h>
++
++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 <eric@anholt.net>");
++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 <linux/delay.h>
+ #include <linux/types.h>
++#include <linux/mfd/bcm2835-pm.h>
+ #include <linux/module.h>
+ #include <linux/io.h>
+ #include <linux/watchdog.h>
+@@ -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 <linux/regmap.h>
++
++struct bcm2835_pm {
++	struct device *dev;
++	void __iomem *base;
++};
++
++#endif /* BCM2835_MFD_PM_H */