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author | John Crispin <blogic@openwrt.org> | 2015-12-10 19:06:32 +0000 |
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committer | John Crispin <blogic@openwrt.org> | 2015-12-10 19:06:32 +0000 |
commit | 930035f9fa98f438a71337f707fc43316318a1be (patch) | |
tree | a0bd281424429737ec1fd7597733e138780f09ac /target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch | |
parent | 61721e21887ea266acd057e4343f5977c29e209b (diff) | |
download | master-187ad058-930035f9fa98f438a71337f707fc43316318a1be.tar.gz master-187ad058-930035f9fa98f438a71337f707fc43316318a1be.tar.bz2 master-187ad058-930035f9fa98f438a71337f707fc43316318a1be.zip |
ralink: bump to the target to v4.3
Signed-off-by: John Crispin <blogic@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47831 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch')
-rw-r--r-- | target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch b/target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch new file mode 100644 index 0000000000..0d410bb28a --- /dev/null +++ b/target/linux/ramips/patches-4.3/0049-watchdog-add-MT7621-support.patch @@ -0,0 +1,237 @@ +From 77fe64de72317c0e090d82056e7a6a073f2972b4 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sun, 16 Mar 2014 05:24:42 +0000 +Subject: [PATCH 49/53] watchdog: add MT7621 support + +Signed-off-by: John Crispin <blogic@openwrt.org> +--- + drivers/watchdog/Kconfig | 7 ++ + drivers/watchdog/Makefile | 1 + + drivers/watchdog/mt7621_wdt.c | 185 +++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 193 insertions(+) + create mode 100644 drivers/watchdog/mt7621_wdt.c + +diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig +index 79e1aa1..0710aa1 100644 +--- a/drivers/watchdog/Kconfig ++++ b/drivers/watchdog/Kconfig +@@ -1337,6 +1337,13 @@ config RALINK_WDT + help + Hardware driver for the Ralink SoC Watchdog Timer. + ++config MT7621_WDT ++ tristate "Mediatek SoC watchdog" ++ select WATCHDOG_CORE ++ depends on SOC_MT7620 || SOC_MT7621 ++ help ++ Hardware driver for the Ralink SoC Watchdog Timer. ++ + # PARISC Architecture + + # POWERPC Architecture +diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile +index 0c616e3..4d3b4b1 100644 +--- a/drivers/watchdog/Makefile ++++ b/drivers/watchdog/Makefile +@@ -68,6 +68,7 @@ obj-$(CONFIG_MESON_WATCHDOG) += meson_wdt.o + obj-$(CONFIG_MEDIATEK_WATCHDOG) += mtk_wdt.o + obj-$(CONFIG_DIGICOLOR_WATCHDOG) += digicolor_wdt.o + obj-$(CONFIG_LPC18XX_WATCHDOG) += lpc18xx_wdt.o ++obj-$(CONFIG_MT7621_WDT) += mt7621_wdt.o + + # AVR32 Architecture + obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o +diff --git a/drivers/watchdog/mt7621_wdt.c b/drivers/watchdog/mt7621_wdt.c +new file mode 100644 +index 0000000..ec2c897 +--- /dev/null ++++ b/drivers/watchdog/mt7621_wdt.c +@@ -0,0 +1,185 @@ ++/* ++ * Ralink RT288x/RT3xxx/MT76xx built-in hardware watchdog timer ++ * ++ * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> ++ * Copyright (C) 2013 John Crispin <blogic@openwrt.org> ++ * ++ * This driver was based on: drivers/watchdog/softdog.c ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of the GNU General Public License version 2 as published ++ * by the Free Software Foundation. ++ */ ++ ++#include <linux/clk.h> ++#include <linux/reset.h> ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/watchdog.h> ++#include <linux/miscdevice.h> ++#include <linux/moduleparam.h> ++#include <linux/platform_device.h> ++ ++#include <asm/mach-ralink/ralink_regs.h> ++ ++#define SYSC_RSTSTAT 0x38 ++#define WDT_RST_CAUSE BIT(1) ++ ++#define RALINK_WDT_TIMEOUT 30 ++ ++#define TIMER_REG_TMRSTAT 0x00 ++#define TIMER_REG_TMR1LOAD 0x24 ++#define TIMER_REG_TMR1CTL 0x20 ++ ++#define TMR1CTL_ENABLE BIT(7) ++#define TMR1CTL_RESTART BIT(9) ++ ++static void __iomem *mt762x_wdt_base; ++ ++static bool nowayout = WATCHDOG_NOWAYOUT; ++module_param(nowayout, bool, 0); ++MODULE_PARM_DESC(nowayout, ++ "Watchdog cannot be stopped once started (default=" ++ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); ++ ++static inline void rt_wdt_w32(unsigned reg, u32 val) ++{ ++ iowrite32(val, mt762x_wdt_base + reg); ++} ++ ++static inline u32 rt_wdt_r32(unsigned reg) ++{ ++ return ioread32(mt762x_wdt_base + reg); ++} ++ ++static int mt762x_wdt_ping(struct watchdog_device *w) ++{ ++ rt_wdt_w32(TIMER_REG_TMRSTAT, TMR1CTL_RESTART); ++ ++ return 0; ++} ++ ++static int mt762x_wdt_set_timeout(struct watchdog_device *w, unsigned int t) ++{ ++ w->timeout = t; ++ rt_wdt_w32(TIMER_REG_TMR1LOAD, t * 1000); ++ mt762x_wdt_ping(w); ++ ++ return 0; ++} ++ ++static int mt762x_wdt_start(struct watchdog_device *w) ++{ ++ u32 t; ++ ++ rt_wdt_w32(TIMER_REG_TMR1CTL, 1000 << 16); ++ mt762x_wdt_set_timeout(w, w->timeout); ++ ++ t = rt_wdt_r32(TIMER_REG_TMR1CTL); ++ t |= TMR1CTL_ENABLE; ++ rt_wdt_w32(TIMER_REG_TMR1CTL, t); ++ ++ return 0; ++} ++ ++static int mt762x_wdt_stop(struct watchdog_device *w) ++{ ++ u32 t; ++ ++ mt762x_wdt_ping(w); ++ ++ t = rt_wdt_r32(TIMER_REG_TMR1CTL); ++ t &= ~TMR1CTL_ENABLE; ++ rt_wdt_w32(TIMER_REG_TMR1CTL, t); ++ ++ return 0; ++} ++ ++static int mt762x_wdt_bootcause(void) ++{ ++ if (rt_sysc_r32(SYSC_RSTSTAT) & WDT_RST_CAUSE) ++ return WDIOF_CARDRESET; ++ ++ return 0; ++} ++ ++static struct watchdog_info mt762x_wdt_info = { ++ .identity = "Mediatek Watchdog", ++ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, ++}; ++ ++static struct watchdog_ops mt762x_wdt_ops = { ++ .owner = THIS_MODULE, ++ .start = mt762x_wdt_start, ++ .stop = mt762x_wdt_stop, ++ .ping = mt762x_wdt_ping, ++ .set_timeout = mt762x_wdt_set_timeout, ++}; ++ ++static struct watchdog_device mt762x_wdt_dev = { ++ .info = &mt762x_wdt_info, ++ .ops = &mt762x_wdt_ops, ++ .min_timeout = 1, ++}; ++ ++static int mt762x_wdt_probe(struct platform_device *pdev) ++{ ++ struct resource *res; ++ int ret; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ mt762x_wdt_base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(mt762x_wdt_base)) ++ return PTR_ERR(mt762x_wdt_base); ++ ++ device_reset(&pdev->dev); ++ ++ mt762x_wdt_dev.dev = &pdev->dev; ++ mt762x_wdt_dev.bootstatus = mt762x_wdt_bootcause(); ++ mt762x_wdt_dev.max_timeout = (0xfffful / 1000); ++ mt762x_wdt_dev.timeout = mt762x_wdt_dev.max_timeout; ++ ++ watchdog_set_nowayout(&mt762x_wdt_dev, nowayout); ++ ++ ret = watchdog_register_device(&mt762x_wdt_dev); ++ if (!ret) ++ dev_info(&pdev->dev, "Initialized\n"); ++ ++ return 0; ++} ++ ++static int mt762x_wdt_remove(struct platform_device *pdev) ++{ ++ watchdog_unregister_device(&mt762x_wdt_dev); ++ ++ return 0; ++} ++ ++static void mt762x_wdt_shutdown(struct platform_device *pdev) ++{ ++ mt762x_wdt_stop(&mt762x_wdt_dev); ++} ++ ++static const struct of_device_id mt762x_wdt_match[] = { ++ { .compatible = "mtk,mt7621-wdt" }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, mt762x_wdt_match); ++ ++static struct platform_driver mt762x_wdt_driver = { ++ .probe = mt762x_wdt_probe, ++ .remove = mt762x_wdt_remove, ++ .shutdown = mt762x_wdt_shutdown, ++ .driver = { ++ .name = KBUILD_MODNAME, ++ .owner = THIS_MODULE, ++ .of_match_table = mt762x_wdt_match, ++ }, ++}; ++ ++module_platform_driver(mt762x_wdt_driver); ++ ++MODULE_DESCRIPTION("MediaTek MT762x hardware watchdog driver"); ++MODULE_AUTHOR("John Crispin <blogic@openwrt.org"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); +-- +1.7.10.4 + |