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-rw-r--r--target/linux/ramips/patches-3.8/0137-watchdog-adds-ralink-wdt.patch395
1 files changed, 0 insertions, 395 deletions
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 <blogic@openwrt.org>
-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 <blogic@openwrt.org>
----
- 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 <juhosg@openwrt.org>
-+ *
-+ * This driver was based on: drivers/watchdog/ixp4xx_wdt.c
-+ * Author: Deepak Saxena <dsaxena@plexity.net>
-+ * Copyright 2004 (c) MontaVista, Software, Inc.
-+ *
-+ * which again was based on sa1100 driver,
-+ * Copyright (C) 2000 Oleg Drokin <green@crimea.edu>
-+ *
-+ * 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 <linux/bitops.h>
-+#include <linux/errno.h>
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/miscdevice.h>
-+#include <linux/module.h>
-+#include <linux/moduleparam.h>
-+#include <linux/platform_device.h>
-+#include <linux/types.h>
-+#include <linux/watchdog.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+
-+#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 <juhosg@openwrt.org");
-+MODULE_LICENSE("GPL v2");
-+MODULE_ALIAS("platform:" DRIVER_NAME);
-+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
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