diff options
Diffstat (limited to 'target/linux/ath25/patches-4.4/130-watchdog.patch')
| -rw-r--r-- | target/linux/ath25/patches-4.4/130-watchdog.patch | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/target/linux/ath25/patches-4.4/130-watchdog.patch b/target/linux/ath25/patches-4.4/130-watchdog.patch deleted file mode 100644 index 251768f735..0000000000 --- a/target/linux/ath25/patches-4.4/130-watchdog.patch +++ /dev/null @@ -1,277 +0,0 @@ ---- /dev/null -+++ b/drivers/watchdog/ar2315-wtd.c -@@ -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 -+ * the Free Software Foundation; either version 2 of the License, or -+ * (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, see <http://www.gnu.org/licenses/>. -+ * -+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org> -+ * Based on EP93xx and ifxmips wdt driver -+ */ -+ -+#include <linux/interrupt.h> -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/types.h> -+#include <linux/miscdevice.h> -+#include <linux/watchdog.h> -+#include <linux/fs.h> -+#include <linux/ioport.h> -+#include <linux/notifier.h> -+#include <linux/reboot.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/io.h> -+#include <linux/uaccess.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) -+{ -+ 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) -+{ -+ if (len) -+ ar2315_wdt_enable(); -+ return len; -+} -+ -+static int -+ar2315_wdt_open(struct inode *inode, struct file *file) -+{ -+ if (in_use) -+ return -EBUSY; -+ ar2315_wdt_enable(); -+ in_use = 1; -+ started = 1; -+ return nonseekable_open(inode, file); -+} -+ -+static int -+ar2315_wdt_release(struct inode *inode, struct file *file) -+{ -+ in_use = 0; -+ return 0; -+} -+ -+static irqreturn_t -+ar2315_wdt_interrupt(int irq, void *dev) -+{ -+ struct platform_device *pdev = (struct platform_device *)dev; -+ -+ if (started) { -+ dev_crit(&pdev->dev, "watchdog expired, rebooting system\n"); -+ emergency_restart(); -+ } else { -+ ar2315_wdt_wr(WDT_REG_CTRL, 0); -+ ar2315_wdt_wr(WDT_REG_TIMER, 0); -+ } -+ return IRQ_HANDLED; -+} -+ -+static struct watchdog_info ident = { -+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING, -+ .identity = "ar2315 Watchdog", -+}; -+ -+static long -+ar2315_wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) -+{ -+ int new_wdt_timeout; -+ int ret = -ENOIOCTLCMD; -+ -+ 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 const struct file_operations ar2315_wdt_fops = { -+ .owner = THIS_MODULE, -+ .llseek = no_llseek, -+ .write = ar2315_wdt_write, -+ .unlocked_ioctl = ar2315_wdt_ioctl, -+ .open = ar2315_wdt_open, -+ .release = ar2315_wdt_release, -+}; -+ -+static struct miscdevice ar2315_wdt_miscdev = { -+ .minor = WATCHDOG_MINOR, -+ .name = "watchdog", -+ .fops = &ar2315_wdt_fops, -+}; -+ -+static int -+ar2315_wdt_probe(struct platform_device *dev) -+{ -+ struct resource *mem_res, *irq_res; -+ int ret = 0; -+ -+ 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, -+ 0, DRIVER_NAME, dev); -+ if (ret) { -+ dev_err(&dev->dev, "failed to register inetrrupt\n"); -+ goto out; -+ } -+ -+ ret = misc_register(&ar2315_wdt_miscdev); -+ if (ret) -+ dev_err(&dev->dev, "failed to register miscdev\n"); -+ -+out: -+ return ret; -+} -+ -+static int -+ar2315_wdt_remove(struct platform_device *dev) -+{ -+ misc_deregister(&ar2315_wdt_miscdev); -+ return 0; -+} -+ -+static struct platform_driver ar2315_wdt_driver = { -+ .probe = ar2315_wdt_probe, -+ .remove = ar2315_wdt_remove, -+ .driver = { -+ .name = DRIVER_NAME, -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+module_platform_driver(ar2315_wdt_driver); -+ -+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 -@@ -1345,6 +1345,13 @@ config RALINK_WDT - help - Hardware driver for the Ralink SoC Watchdog Timer. - -+config AR2315_WDT -+ tristate "Atheros AR2315+ WiSoCs Watchdog Timer" -+ depends on ATH25 -+ help -+ Hardware driver for the built-in watchdog timer on the Atheros -+ AR2315/AR2316 WiSoCs. -+ - # PARISC Architecture - - # POWERPC Architecture ---- a/drivers/watchdog/Makefile -+++ b/drivers/watchdog/Makefile -@@ -143,6 +143,7 @@ obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o - obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o - obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o - obj-$(CONFIG_AR7_WDT) += ar7_wdt.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 ---- a/arch/mips/ath25/ar2315.c -+++ b/arch/mips/ath25/ar2315.c -@@ -220,6 +220,24 @@ static struct platform_device ar2315_gpi - .num_resources = ARRAY_SIZE(ar2315_gpio_res) - }; - -+static struct resource ar2315_wdt_res[] = { -+ { -+ .flags = IORESOURCE_MEM, -+ .start = AR2315_RST_BASE + AR2315_WDT_TIMER, -+ .end = AR2315_RST_BASE + AR2315_WDT_TIMER + 8 - 1, -+ }, -+ { -+ .flags = IORESOURCE_IRQ, -+ } -+}; -+ -+static struct platform_device ar2315_wdt = { -+ .id = 0, -+ .name = "ar2315-wdt", -+ .resource = ar2315_wdt_res, -+ .num_resources = ARRAY_SIZE(ar2315_wdt_res) -+}; -+ - static struct resource ar2315_spiflash_res[] = { - { - .name = "spiflash_read", -@@ -252,6 +270,11 @@ void __init ar2315_init_devices(void) - ar2315_gpio_res[1].end = ar2315_gpio_res[1].start; - platform_device_register(&ar2315_gpio); - -+ ar2315_wdt_res[1].start = irq_create_mapping(ar2315_misc_irq_domain, -+ AR2315_MISC_IRQ_WATCHDOG); -+ ar2315_wdt_res[1].end = ar2315_wdt_res[1].start; -+ platform_device_register(&ar2315_wdt); -+ - platform_device_register(&ar2315_spiflash); - - ar2315_eth_data.macaddr = ath25_board.config->enet0_mac; |