From 55fb6f3a05deb4a8b5e600cc10bae9555a9f90be Mon Sep 17 00:00:00 2001 From: John Crispin Date: Sun, 23 Jun 2013 15:50:49 +0000 Subject: ralink: update patches Signed-off-by: John Crispin SVN-Revision: 37016 --- .../0137-watchdog-adds-ralink-wdt.patch | 395 --------------------- 1 file changed, 395 deletions(-) delete mode 100644 target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch (limited to 'target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch') diff --git a/target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch b/target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch deleted file mode 100644 index 3b7246ffdb..0000000000 --- a/target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch +++ /dev/null @@ -1,395 +0,0 @@ -From 14c1b064274d28cf88113a685c58374a515f3018 Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Mon, 22 Apr 2013 23:23:07 +0200 -Subject: [PATCH 137/137] watchdog: adds ralink wdt - -Adds the watchdog driver for ralink SoC. - -Signed-off-by: John Crispin ---- - drivers/watchdog/Kconfig | 6 + - drivers/watchdog/Makefile | 1 + - drivers/watchdog/ralink_wdt.c | 352 +++++++++++++++++++++++++++++++++++++++++ - 3 files changed, 359 insertions(+) - create mode 100644 drivers/watchdog/ralink_wdt.c - ---- a/drivers/watchdog/Kconfig -+++ b/drivers/watchdog/Kconfig -@@ -1077,6 +1077,12 @@ config LANTIQ_WDT - help - Hardware driver for the Lantiq SoC Watchdog Timer. - -+config RALINK_WDT -+ tristate "Ralink SoC watchdog" -+ depends on RALINK -+ help -+ Hardware driver for the Ralink SoC Watchdog Timer. -+ - # PARISC Architecture - - # POWERPC Architecture ---- a/drivers/watchdog/Makefile -+++ b/drivers/watchdog/Makefile -@@ -132,6 +132,7 @@ obj-$(CONFIG_TXX9_WDT) += txx9wdt.o - obj-$(CONFIG_OCTEON_WDT) += octeon-wdt.o - octeon-wdt-y := octeon-wdt-main.o octeon-wdt-nmi.o - obj-$(CONFIG_LANTIQ_WDT) += lantiq_wdt.o -+obj-$(CONFIG_RALINK_WDT) += ralink_wdt.o - - # PARISC Architecture - ---- /dev/null -+++ b/drivers/watchdog/ralink_wdt.c -@@ -0,0 +1,352 @@ -+/* -+ * Ralink RT288X/RT305X built-in hardware watchdog timer -+ * -+ * Copyright (C) 2011 Gabor Juhos -+ * -+ * This driver was based on: drivers/watchdog/ixp4xx_wdt.c -+ * Author: Deepak Saxena -+ * Copyright 2004 (c) MontaVista, Software, Inc. -+ * -+ * which again was based on sa1100 driver, -+ * Copyright (C) 2000 Oleg Drokin -+ * -+ * parts of the driver are based on Ralink's 2.6.21 BSP -+ * -+ * 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 -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+#include -+ -+#define DRIVER_NAME "ralink-wdt" -+ -+#define RALINK_WDT_TIMEOUT 30 /* seconds */ -+#define RALINK_WDT_PRESCALE 65536 -+ -+#define TIMER_REG_TMR1LOAD 0x00 -+#define TIMER_REG_TMR1CTL 0x08 -+ -+#define TMRSTAT_TMR1RST BIT(5) -+ -+#define TMR1CTL_ENABLE BIT(7) -+#define TMR1CTL_MODE_SHIFT 4 -+#define TMR1CTL_MODE_MASK 0x3 -+#define TMR1CTL_MODE_FREE_RUNNING 0x0 -+#define TMR1CTL_MODE_PERIODIC 0x1 -+#define TMR1CTL_MODE_TIMEOUT 0x2 -+#define TMR1CTL_MODE_WDT 0x3 -+#define TMR1CTL_PRESCALE_MASK 0xf -+#define TMR1CTL_PRESCALE_65536 0xf -+ -+static int nowayout = WATCHDOG_NOWAYOUT; -+module_param(nowayout, int, 0); -+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started " -+ "(default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); -+ -+static int ralink_wdt_timeout = RALINK_WDT_TIMEOUT; -+module_param_named(timeout, ralink_wdt_timeout, int, 0); -+MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds, 0 means use maximum " -+ "(default=" __MODULE_STRING(RALINK_WDT_TIMEOUT) "s)"); -+ -+static unsigned long ralink_wdt_flags; -+ -+#define WDT_FLAGS_BUSY 0 -+#define WDT_FLAGS_EXPECT_CLOSE 1 -+ -+static struct clk *ralink_wdt_clk; -+static unsigned long ralink_wdt_freq; -+static int ralink_wdt_max_timeout; -+static void __iomem *ralink_wdt_base; -+ -+static inline void rt_wdt_w32(unsigned reg, u32 val) -+{ -+ __raw_writel(val, ralink_wdt_base + reg); -+} -+ -+static inline u32 rt_wdt_r32(unsigned reg) -+{ -+ return __raw_readl(ralink_wdt_base + reg); -+} -+ -+static inline void ralink_wdt_keepalive(void) -+{ -+ rt_wdt_w32(TIMER_REG_TMR1LOAD, ralink_wdt_timeout * ralink_wdt_freq); -+} -+ -+static inline void ralink_wdt_enable(void) -+{ -+ u32 t; -+ -+ ralink_wdt_keepalive(); -+ -+ t = rt_wdt_r32(TIMER_REG_TMR1CTL); -+ t |= TMR1CTL_ENABLE; -+ rt_wdt_w32(TIMER_REG_TMR1CTL, t); -+} -+ -+static inline void ralink_wdt_disable(void) -+{ -+ u32 t; -+ -+ ralink_wdt_keepalive(); -+ -+ t = rt_wdt_r32(TIMER_REG_TMR1CTL); -+ t &= ~TMR1CTL_ENABLE; -+ rt_wdt_w32(TIMER_REG_TMR1CTL, t); -+} -+ -+static int ralink_wdt_set_timeout(int val) -+{ -+ if (val < 1 || val > ralink_wdt_max_timeout) { -+ pr_warn(DRIVER_NAME -+ ": timeout value %d must be 0 < timeout <= %d, using %d\n", -+ val, ralink_wdt_max_timeout, ralink_wdt_timeout); -+ return -EINVAL; -+ } -+ -+ ralink_wdt_timeout = val; -+ ralink_wdt_keepalive(); -+ -+ return 0; -+} -+ -+static int ralink_wdt_open(struct inode *inode, struct file *file) -+{ -+ u32 t; -+ -+ if (test_and_set_bit(WDT_FLAGS_BUSY, &ralink_wdt_flags)) -+ return -EBUSY; -+ -+ clear_bit(WDT_FLAGS_EXPECT_CLOSE, &ralink_wdt_flags); -+ -+ t = rt_wdt_r32(TIMER_REG_TMR1CTL); -+ t &= ~(TMR1CTL_MODE_MASK << TMR1CTL_MODE_SHIFT | -+ TMR1CTL_PRESCALE_MASK); -+ t |= (TMR1CTL_MODE_WDT << TMR1CTL_MODE_SHIFT | -+ TMR1CTL_PRESCALE_65536); -+ rt_wdt_w32(TIMER_REG_TMR1CTL, t); -+ -+ ralink_wdt_enable(); -+ -+ return nonseekable_open(inode, file); -+} -+ -+static int ralink_wdt_release(struct inode *inode, struct file *file) -+{ -+ if (test_bit(WDT_FLAGS_EXPECT_CLOSE, &ralink_wdt_flags)) -+ ralink_wdt_disable(); -+ else { -+ pr_crit(DRIVER_NAME ": device closed unexpectedly, " -+ "watchdog timer will not stop!\n"); -+ ralink_wdt_keepalive(); -+ } -+ -+ clear_bit(WDT_FLAGS_BUSY, &ralink_wdt_flags); -+ clear_bit(WDT_FLAGS_EXPECT_CLOSE, &ralink_wdt_flags); -+ -+ return 0; -+} -+ -+static ssize_t rt_wdt_w32ite(struct file *file, const char *data, -+ size_t len, loff_t *ppos) -+{ -+ if (len) { -+ if (!nowayout) { -+ size_t i; -+ -+ clear_bit(WDT_FLAGS_EXPECT_CLOSE, &ralink_wdt_flags); -+ -+ for (i = 0; i != len; i++) { -+ char c; -+ -+ if (get_user(c, data + i)) -+ return -EFAULT; -+ -+ if (c == 'V') -+ set_bit(WDT_FLAGS_EXPECT_CLOSE, -+ &ralink_wdt_flags); -+ } -+ } -+ -+ ralink_wdt_keepalive(); -+ } -+ -+ return len; -+} -+ -+static const struct watchdog_info ralink_wdt_info = { -+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | -+ WDIOF_MAGICCLOSE, -+ .firmware_version = 0, -+ .identity = "RALINK watchdog", -+}; -+ -+static long ralink_wdt_ioctl(struct file *file, unsigned int cmd, -+ unsigned long arg) -+{ -+ void __user *argp = (void __user *)arg; -+ int __user *p = argp; -+ int err; -+ int t; -+ -+ switch (cmd) { -+ case WDIOC_GETSUPPORT: -+ err = copy_to_user(argp, &ralink_wdt_info, -+ sizeof(ralink_wdt_info)) ? -EFAULT : 0; -+ break; -+ -+ case WDIOC_GETSTATUS: -+ err = put_user(0, p); -+ break; -+ -+ case WDIOC_KEEPALIVE: -+ ralink_wdt_keepalive(); -+ err = 0; -+ break; -+ -+ case WDIOC_SETTIMEOUT: -+ err = get_user(t, p); -+ if (err) -+ break; -+ -+ err = ralink_wdt_set_timeout(t); -+ if (err) -+ break; -+ -+ /* fallthrough */ -+ case WDIOC_GETTIMEOUT: -+ err = put_user(ralink_wdt_timeout, p); -+ break; -+ -+ default: -+ err = -ENOTTY; -+ break; -+ } -+ -+ return err; -+} -+ -+static const struct file_operations ralink_wdt_fops = { -+ .owner = THIS_MODULE, -+ .llseek = no_llseek, -+ .write = rt_wdt_w32ite, -+ .unlocked_ioctl = ralink_wdt_ioctl, -+ .open = ralink_wdt_open, -+ .release = ralink_wdt_release, -+}; -+ -+static struct miscdevice ralink_wdt_miscdev = { -+ .minor = WATCHDOG_MINOR, -+ .name = "watchdog", -+ .fops = &ralink_wdt_fops, -+}; -+ -+static int ralink_wdt_probe(struct platform_device *pdev) -+{ -+ struct resource *res; -+ int err; -+ -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!res) { -+ dev_err(&pdev->dev, "no memory resource found\n"); -+ return -EINVAL; -+ } -+ -+ ralink_wdt_base = ioremap(res->start, resource_size(res)); -+ if (!ralink_wdt_base) -+ return -ENOMEM; -+ -+ ralink_wdt_clk = clk_get(&pdev->dev, NULL); -+ if (IS_ERR(ralink_wdt_clk)) { -+ err = PTR_ERR(ralink_wdt_clk); -+ goto err_unmap; -+ } -+ -+ err = clk_enable(ralink_wdt_clk); -+ if (err) -+ goto err_clk_put; -+ -+ ralink_wdt_freq = clk_get_rate(ralink_wdt_clk) / RALINK_WDT_PRESCALE; -+ if (!ralink_wdt_freq) { -+ err = -EINVAL; -+ goto err_clk_disable; -+ } -+ -+ ralink_wdt_max_timeout = (0xfffful / ralink_wdt_freq); -+ if (ralink_wdt_timeout < 1 || -+ ralink_wdt_timeout > ralink_wdt_max_timeout) { -+ ralink_wdt_timeout = ralink_wdt_max_timeout; -+ dev_info(&pdev->dev, -+ "timeout value must be 0 < timeout <= %d, using %d\n", -+ ralink_wdt_max_timeout, ralink_wdt_timeout); -+ } -+ -+ err = misc_register(&ralink_wdt_miscdev); -+ if (err) { -+ dev_err(&pdev->dev, -+ "unable to register misc device, err=%d\n", err); -+ goto err_clk_disable; -+ } -+ -+ return 0; -+ -+err_clk_disable: -+ clk_disable(ralink_wdt_clk); -+err_clk_put: -+ clk_put(ralink_wdt_clk); -+err_unmap: -+ iounmap(ralink_wdt_base); -+ return err; -+} -+ -+static int ralink_wdt_remove(struct platform_device *pdev) -+{ -+ misc_deregister(&ralink_wdt_miscdev); -+ clk_disable(ralink_wdt_clk); -+ clk_put(ralink_wdt_clk); -+ iounmap(ralink_wdt_base); -+ return 0; -+} -+ -+static void ralink_wdt_shutdown(struct platform_device *pdev) -+{ -+ ralink_wdt_disable(); -+} -+ -+static const struct of_device_id ralink_wdt_match[] = { -+ { .compatible = "ralink,rt2880-wdt" }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, ralink_wdt_match); -+ -+static struct platform_driver ralink_wdt_driver = { -+ .probe = ralink_wdt_probe, -+ .remove = ralink_wdt_remove, -+ .shutdown = ralink_wdt_shutdown, -+ .driver = { -+ .name = DRIVER_NAME, -+ .owner = THIS_MODULE, -+ .of_match_table = ralink_wdt_match, -+ }, -+}; -+ -+module_platform_driver(ralink_wdt_driver); -+ -+MODULE_DESCRIPTION("MediaTek/Ralink RT288X/RT305X hardware watchdog driver"); -+MODULE_AUTHOR("Gabor Juhos