X-Git-Url: https://git.archive.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fatheros%2Fpatches-3.10%2F130-watchdog.patch;h=13eca59edab90a43b95367d20b587968bace00f7;hb=c968c7591879f0f93af009d7651c4aba285c8863;hp=8c61c91a0a48e4cedbdbebd6830c197d3e9bf855;hpb=ffdcbe7b0fe4a6a747772f02364e0fe43de2c209;p=openwrt.git

diff --git a/target/linux/atheros/patches-3.10/130-watchdog.patch b/target/linux/atheros/patches-3.10/130-watchdog.patch
index 8c61c91a0a..13eca59eda 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 +1,199 @@
+@@ -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
@@ -32,32 +32,42 @@
 +#include <linux/reboot.h>
 +#include <linux/init.h>
 +#include <linux/platform_device.h>
++#include <linux/io.h>
++#include <linux/uaccess.h>
 +
-+#include <asm/io.h>
-+#include <asm/uaccess.h>
-+#include <asm/addrspace.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 = 0;
-+static int in_use = 0;
++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);
-+	ar231x_write_reg(AR2315_ISR, 0x80);
++	ar2315_wdt_wr(WDT_REG_TIMER, wdt_timeout * CLOCK_RATE);
 +}
 +
 +static ssize_t
-+ar2315_wdt_write(struct file *file, const char __user *data, size_t len, loff_t *ppos)
++ar2315_wdt_write(struct file *file, const char __user *data, size_t len,
++		 loff_t *ppos)
 +{
-+	if(len)
++	if (len)
 +		ar2315_wdt_enable();
 +	return len;
 +}
@@ -65,7 +75,7 @@
 +static int
 +ar2315_wdt_open(struct inode *inode, struct file *file)
 +{
-+	if(in_use)
++	if (in_use)
 +		return -EBUSY;
 +	ar2315_wdt_enable();
 +	in_use = started = 1;
@@ -80,16 +90,16 @@
 +}
 +
 +static irqreturn_t
-+ar2315_wdt_interrupt(int irq, void *dev_id)
++ar2315_wdt_interrupt(int irq, void *dev)
 +{
-+	if(started)
-+	{
-+		printk(KERN_CRIT "watchdog expired, rebooting system\n");
++	struct platform_device *pdev = (struct platform_device *)dev;
++
++	if (started) {
++		dev_crit(&pdev->dev, "watchdog expired, rebooting system\n");
 +		emergency_restart();
 +	} else {
-+		ar231x_write_reg(AR2315_WDC, 0);
-+		ar231x_write_reg(AR2315_WD, 0);
-+		ar231x_write_reg(AR2315_ISR, 0x80);
++		ar2315_wdt_wr(WDT_REG_CTRL, 0);
++		ar2315_wdt_wr(WDT_REG_TIMER, 0);
 +	}
 +	return IRQ_HANDLED;
 +}
@@ -105,32 +115,30 @@
 +	int new_wdt_timeout;
 +	int ret = -ENOIOCTLCMD;
 +
-+	switch(cmd)
-+	{
-+		case WDIOC_GETSUPPORT:
-+			ret = copy_to_user((struct watchdog_info __user *)arg, &ident, sizeof(ident)) ? -EFAULT : 0;
-+			break;
-+
-+		case WDIOC_KEEPALIVE:
-+			ar2315_wdt_enable();
-+			ret = 0;
-+			break;
-+
-+		case WDIOC_SETTIMEOUT:
-+			if((ret = get_user(new_wdt_timeout, (int __user *)arg)))
-+				break;
-+			wdt_timeout = HEARTBEAT(new_wdt_timeout);
-+			ar2315_wdt_enable();
-+			break;
-+
-+		case WDIOC_GETTIMEOUT:
-+			ret = put_user(wdt_timeout, (int __user *)arg);
++	switch (cmd) {
++	case WDIOC_GETSUPPORT:
++		ret = copy_to_user((void __user *)arg, &ident, sizeof(ident)) ?
++		      -EFAULT : 0;
++		break;
++	case WDIOC_KEEPALIVE:
++		ar2315_wdt_enable();
++		ret = 0;
++		break;
++	case WDIOC_SETTIMEOUT:
++		ret = get_user(new_wdt_timeout, (int __user *)arg);
++		if (ret)
 +			break;
++		wdt_timeout = HEARTBEAT(new_wdt_timeout);
++		ar2315_wdt_enable();
++		break;
++	case WDIOC_GETTIMEOUT:
++		ret = put_user(wdt_timeout, (int __user *)arg);
++		break;
 +	}
 +	return ret;
 +}
 +
-+static struct file_operations ar2315_wdt_fops = {
++static const struct file_operations ar2315_wdt_fops = {
 +	.owner		= THIS_MODULE,
 +	.llseek		= no_llseek,
 +	.write		= ar2315_wdt_write,
@@ -148,19 +156,33 @@
 +static int
 +ar2315_wdt_probe(struct platform_device *dev)
 +{
++	struct resource *mem_res, *irq_res;
 +	int ret = 0;
 +
-+	ar2315_wdt_enable();
-+	ret = request_irq(AR531X_MISC_IRQ_WATCHDOG, ar2315_wdt_interrupt, IRQF_DISABLED, "ar2315_wdt", NULL);
-+	if(ret)
-+	{
-+		printk(KERN_ERR "ar2315wdt: failed to register inetrrupt\n");
++	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;
 +	}
 +
 +	ret = misc_register(&ar2315_wdt_miscdev);
-+	if(ret)
-+		printk(KERN_ERR "ar2315wdt: failed to register miscdev\n");
++	if (ret)
++		dev_err(&dev->dev, "failed to register miscdev\n");
 +
 +out:
 +	return ret;
@@ -170,7 +192,6 @@
 +ar2315_wdt_remove(struct platform_device *dev)
 +{
 +	misc_deregister(&ar2315_wdt_miscdev);
-+	free_irq(AR531X_MISC_IRQ_WATCHDOG, NULL);
 +	return 0;
 +}
 +
@@ -178,39 +199,29 @@
 +	.probe = ar2315_wdt_probe,
 +	.remove = ar2315_wdt_remove,
 +	.driver = {
-+		.name = "ar2315_wdt",
++		.name = DRIVER_NAME,
 +		.owner = THIS_MODULE,
 +	},
 +};
 +
-+static int __init
-+init_ar2315_wdt(void)
-+{
-+	int ret = platform_driver_register(&ar2315_wdt_driver);
-+	if(ret)
-+		printk(KERN_INFO "ar2315_wdt: error registering platfom driver!");
-+	return ret;
-+}
-+
-+static void __exit
-+exit_ar2315_wdt(void)
-+{
-+	platform_driver_unregister(&ar2315_wdt_driver);
-+}
++module_platform_driver(ar2315_wdt_driver);
 +
-+module_init(init_ar2315_wdt);
-+module_exit(exit_ar2315_wdt);
++MODULE_DESCRIPTION("Atheros AR2315 hardware watchdog driver");
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:" DRIVER_NAME);
 --- a/drivers/watchdog/Kconfig
 +++ b/drivers/watchdog/Kconfig
-@@ -1113,6 +1113,12 @@ config LANTIQ_WDT
+@@ -1113,6 +1113,13 @@ config LANTIQ_WDT
  	help
  	  Hardware driver for the Lantiq SoC Watchdog Timer.
  
-+config ATHEROS_WDT
-+	tristate "Atheros wisoc Watchdog Timer"
++config AR2315_WDT
++	tristate "Atheros AR2315+ WiSoCs Watchdog Timer"
 +	depends on ATHEROS_AR231X
 +	help
-+	  Hardware driver for the Atheros wisoc Watchdog Timer.
++	  Hardware driver for the built-in watchdog timer on the Atheros
++	  AR2315/AR2316 WiSoCs.
 +
  # PARISC Architecture
  
@@ -221,7 +232,7 @@
  obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
  obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
  obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
-+obj-$(CONFIG_ATHEROS_WDT) += ar2315-wtd.o
++obj-$(CONFIG_AR2315_WDT) += ar2315-wtd.o
  obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
  obj-$(CONFIG_OCTEON_WDT) += octeon-wdt.o
  octeon-wdt-y := octeon-wdt-main.o octeon-wdt-nmi.o