diff options
Diffstat (limited to 'target/linux/atheros/patches-3.10/130-watchdog.patch')
| -rw-r--r-- | target/linux/atheros/patches-3.10/130-watchdog.patch | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/target/linux/atheros/patches-3.10/130-watchdog.patch b/target/linux/atheros/patches-3.10/130-watchdog.patch index 06c8d44..13eca59 100644 --- a/target/linux/atheros/patches-3.10/130-watchdog.patch +++ b/target/linux/atheros/patches-3.10/130-watchdog.patch @@ -1,6 +1,6 @@ --- /dev/null +++ b/drivers/watchdog/ar2315-wtd.c -@@ -0,0 +1,186 @@ +@@ -0,0 +1,209 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by @@ -35,23 +35,32 @@ +#include <linux/io.h> +#include <linux/uaccess.h> + -+#include <ar231x_platform.h> -+#include <ar2315_regs.h> -+#include <ar231x.h> -+ +#define DRIVER_NAME "ar2315-wdt" + +#define CLOCK_RATE 40000000 +#define HEARTBEAT(x) (x < 1 || x > 90 ? 20 : x) + ++#define WDT_REG_TIMER 0x00 ++#define WDT_REG_CTRL 0x04 ++ ++#define WDT_CTRL_ACT_NONE 0x00000000 /* No action */ ++#define WDT_CTRL_ACT_NMI 0x00000001 /* NMI on watchdog */ ++#define WDT_CTRL_ACT_RESET 0x00000002 /* reset on watchdog */ ++ +static int wdt_timeout = 20; +static int started; +static int in_use; ++static void __iomem *wdt_base; ++ ++static inline void ar2315_wdt_wr(unsigned reg, u32 val) ++{ ++ iowrite32(val, wdt_base + reg); ++} + +static void +ar2315_wdt_enable(void) +{ -+ ar231x_write_reg(AR2315_WD, wdt_timeout * CLOCK_RATE); ++ ar2315_wdt_wr(WDT_REG_TIMER, wdt_timeout * CLOCK_RATE); +} + +static ssize_t @@ -89,8 +98,8 @@ + dev_crit(&pdev->dev, "watchdog expired, rebooting system\n"); + emergency_restart(); + } else { -+ ar231x_write_reg(AR2315_WDC, 0); -+ ar231x_write_reg(AR2315_WD, 0); ++ ar2315_wdt_wr(WDT_REG_CTRL, 0); ++ ar2315_wdt_wr(WDT_REG_TIMER, 0); + } + return IRQ_HANDLED; +} @@ -147,10 +156,25 @@ +static int +ar2315_wdt_probe(struct platform_device *dev) +{ ++ struct resource *mem_res, *irq_res; + int ret = 0; + -+ ret = request_irq(AR531X_MISC_IRQ_WATCHDOG, ar2315_wdt_interrupt, -+ IRQF_DISABLED, DRIVER_NAME, dev); ++ if (wdt_base) ++ return -EBUSY; ++ ++ irq_res = platform_get_resource(dev, IORESOURCE_IRQ, 0); ++ if (!irq_res) { ++ dev_err(&dev->dev, "no IRQ resource\n"); ++ return -ENOENT; ++ } ++ ++ mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0); ++ wdt_base = devm_ioremap_resource(&dev->dev, mem_res); ++ if (IS_ERR(wdt_base)) ++ return PTR_ERR(wdt_base); ++ ++ ret = devm_request_irq(&dev->dev, irq_res->start, ar2315_wdt_interrupt, ++ IRQF_DISABLED, DRIVER_NAME, dev); + if (ret) { + dev_err(&dev->dev, "failed to register inetrrupt\n"); + goto out; @@ -168,7 +192,6 @@ +ar2315_wdt_remove(struct platform_device *dev) +{ + misc_deregister(&ar2315_wdt_miscdev); -+ free_irq(AR531X_MISC_IRQ_WATCHDOG, NULL); + return 0; +} + |