mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2024-12-12 01:44:54 +00:00
5deb3996e2
Copy and refresh patches and config from 5.4 to 5.10. Most patches require no more then automatic refresh. The only exception is the Ethernet driver patch, which requires some more work: * drop eth_change_mtu() usage since it was removed from the kernel, it anyway useless for drivers that utilizes alloc_etherdev(); * add the txqueue number argument to the .ndo_tx_timeout callback function; * replace ioremap_nocache() which was finally removed from the kernel by the ioremap() with the same behaviour. Switch target to the new kernel version. Signed-off-by: Daniel Golle <daniel@makrotopia.org> [use KERNEL_TESTING_PATCHVER for now] Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
278 lines
7.0 KiB
Diff
278 lines
7.0 KiB
Diff
--- /dev/null
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+++ b/drivers/watchdog/ar2315-wtd.c
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@@ -0,0 +1,209 @@
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+/*
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
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+ *
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+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
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+ * Based on EP93xx and ifxmips wdt driver
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+ */
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+
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+#include <linux/interrupt.h>
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+#include <linux/module.h>
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+#include <linux/moduleparam.h>
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+#include <linux/types.h>
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+#include <linux/miscdevice.h>
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+#include <linux/watchdog.h>
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+#include <linux/fs.h>
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+#include <linux/ioport.h>
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+#include <linux/notifier.h>
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+#include <linux/reboot.h>
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+#include <linux/init.h>
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+#include <linux/platform_device.h>
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+#include <linux/io.h>
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+#include <linux/uaccess.h>
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+
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+#define DRIVER_NAME "ar2315-wdt"
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+
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+#define CLOCK_RATE 40000000
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+#define HEARTBEAT(x) (x < 1 || x > 90 ? 20 : x)
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+
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+#define WDT_REG_TIMER 0x00
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+#define WDT_REG_CTRL 0x04
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+
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+#define WDT_CTRL_ACT_NONE 0x00000000 /* No action */
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+#define WDT_CTRL_ACT_NMI 0x00000001 /* NMI on watchdog */
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+#define WDT_CTRL_ACT_RESET 0x00000002 /* reset on watchdog */
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+
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+static int wdt_timeout = 20;
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+static int started;
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+static int in_use;
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+static void __iomem *wdt_base;
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+
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+static inline void ar2315_wdt_wr(unsigned reg, u32 val)
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+{
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+ iowrite32(val, wdt_base + reg);
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+}
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+
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+static void
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+ar2315_wdt_enable(void)
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+{
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+ ar2315_wdt_wr(WDT_REG_TIMER, wdt_timeout * CLOCK_RATE);
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+}
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+
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+static ssize_t
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+ar2315_wdt_write(struct file *file, const char __user *data, size_t len,
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+ loff_t *ppos)
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+{
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+ if (len)
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+ ar2315_wdt_enable();
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+ return len;
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+}
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+
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+static int
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+ar2315_wdt_open(struct inode *inode, struct file *file)
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+{
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+ if (in_use)
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+ return -EBUSY;
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+ ar2315_wdt_enable();
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+ in_use = 1;
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+ started = 1;
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+ return nonseekable_open(inode, file);
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+}
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+
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+static int
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+ar2315_wdt_release(struct inode *inode, struct file *file)
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+{
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+ in_use = 0;
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+ return 0;
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+}
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+
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+static irqreturn_t
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+ar2315_wdt_interrupt(int irq, void *dev)
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+{
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+ struct platform_device *pdev = (struct platform_device *)dev;
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+
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+ if (started) {
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+ dev_crit(&pdev->dev, "watchdog expired, rebooting system\n");
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+ emergency_restart();
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+ } else {
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+ ar2315_wdt_wr(WDT_REG_CTRL, 0);
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+ ar2315_wdt_wr(WDT_REG_TIMER, 0);
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+ }
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+ return IRQ_HANDLED;
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+}
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+
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+static struct watchdog_info ident = {
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+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
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+ .identity = "ar2315 Watchdog",
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+};
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+
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+static long
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+ar2315_wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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+{
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+ int new_wdt_timeout;
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+ int ret = -ENOIOCTLCMD;
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+
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+ switch (cmd) {
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+ case WDIOC_GETSUPPORT:
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+ ret = copy_to_user((void __user *)arg, &ident, sizeof(ident)) ?
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+ -EFAULT : 0;
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+ break;
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+ case WDIOC_KEEPALIVE:
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+ ar2315_wdt_enable();
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+ ret = 0;
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+ break;
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+ case WDIOC_SETTIMEOUT:
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+ ret = get_user(new_wdt_timeout, (int __user *)arg);
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+ if (ret)
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+ break;
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+ wdt_timeout = HEARTBEAT(new_wdt_timeout);
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+ ar2315_wdt_enable();
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+ break;
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+ case WDIOC_GETTIMEOUT:
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+ ret = put_user(wdt_timeout, (int __user *)arg);
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+ break;
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+ }
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+ return ret;
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+}
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+
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+static const struct file_operations ar2315_wdt_fops = {
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+ .owner = THIS_MODULE,
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+ .llseek = no_llseek,
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+ .write = ar2315_wdt_write,
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+ .unlocked_ioctl = ar2315_wdt_ioctl,
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+ .open = ar2315_wdt_open,
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+ .release = ar2315_wdt_release,
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+};
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+
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+static struct miscdevice ar2315_wdt_miscdev = {
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+ .minor = WATCHDOG_MINOR,
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+ .name = "watchdog",
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+ .fops = &ar2315_wdt_fops,
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+};
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+
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+static int
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+ar2315_wdt_probe(struct platform_device *dev)
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+{
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+ struct resource *mem_res, *irq_res;
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+ int ret = 0;
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+
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+ if (wdt_base)
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+ return -EBUSY;
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+
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+ irq_res = platform_get_resource(dev, IORESOURCE_IRQ, 0);
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+ if (!irq_res) {
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+ dev_err(&dev->dev, "no IRQ resource\n");
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+ return -ENOENT;
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+ }
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+
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+ mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
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+ wdt_base = devm_ioremap_resource(&dev->dev, mem_res);
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+ if (IS_ERR(wdt_base))
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+ return PTR_ERR(wdt_base);
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+
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+ ret = devm_request_irq(&dev->dev, irq_res->start, ar2315_wdt_interrupt,
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+ 0, DRIVER_NAME, dev);
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+ if (ret) {
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+ dev_err(&dev->dev, "failed to register inetrrupt\n");
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+ goto out;
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+ }
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+
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+ ret = misc_register(&ar2315_wdt_miscdev);
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+ if (ret)
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+ dev_err(&dev->dev, "failed to register miscdev\n");
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+
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+out:
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+ return ret;
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+}
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+
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+static int
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+ar2315_wdt_remove(struct platform_device *dev)
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+{
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+ misc_deregister(&ar2315_wdt_miscdev);
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+ return 0;
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+}
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+
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+static struct platform_driver ar2315_wdt_driver = {
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+ .probe = ar2315_wdt_probe,
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+ .remove = ar2315_wdt_remove,
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+ .driver = {
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+ .name = DRIVER_NAME,
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+ .owner = THIS_MODULE,
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+ },
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+};
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+
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+module_platform_driver(ar2315_wdt_driver);
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+
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+MODULE_DESCRIPTION("Atheros AR2315 hardware watchdog driver");
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+MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
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+MODULE_LICENSE("GPL");
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+MODULE_ALIAS("platform:" DRIVER_NAME);
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--- a/drivers/watchdog/Kconfig
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+++ b/drivers/watchdog/Kconfig
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@@ -1873,6 +1873,13 @@ config PIC32_DMT
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To compile this driver as a loadable module, choose M here.
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The module will be called pic32-dmt.
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+config AR2315_WDT
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+ tristate "Atheros AR2315+ WiSoCs Watchdog Timer"
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+ depends on ATH25
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+ help
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+ Hardware driver for the built-in watchdog timer on the Atheros
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+ AR2315/AR2316 WiSoCs.
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+
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# PARISC Architecture
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# POWERPC Architecture
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--- a/drivers/watchdog/Makefile
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+++ b/drivers/watchdog/Makefile
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@@ -164,6 +164,7 @@ obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
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obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
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obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
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obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
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+obj-$(CONFIG_AR2315_WDT) += ar2315-wtd.o
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obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
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obj-$(CONFIG_OCTEON_WDT) += octeon-wdt.o
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octeon-wdt-y := octeon-wdt-main.o octeon-wdt-nmi.o
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--- a/arch/mips/ath25/ar2315.c
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+++ b/arch/mips/ath25/ar2315.c
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@@ -218,6 +218,24 @@ static struct platform_device ar2315_gpi
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.num_resources = ARRAY_SIZE(ar2315_gpio_res)
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};
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+static struct resource ar2315_wdt_res[] = {
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+ {
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+ .flags = IORESOURCE_MEM,
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+ .start = AR2315_RST_BASE + AR2315_WDT_TIMER,
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+ .end = AR2315_RST_BASE + AR2315_WDT_TIMER + 8 - 1,
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+ },
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+ {
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+ .flags = IORESOURCE_IRQ,
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+ }
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+};
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+
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+static struct platform_device ar2315_wdt = {
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+ .id = 0,
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+ .name = "ar2315-wdt",
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+ .resource = ar2315_wdt_res,
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+ .num_resources = ARRAY_SIZE(ar2315_wdt_res)
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+};
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+
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static struct resource ar2315_spiflash_res[] = {
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{
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.name = "spiflash_read",
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@@ -250,6 +268,11 @@ void __init ar2315_init_devices(void)
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ar2315_gpio_res[1].end = ar2315_gpio_res[1].start;
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platform_device_register(&ar2315_gpio);
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+ ar2315_wdt_res[1].start = irq_create_mapping(ar2315_misc_irq_domain,
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+ AR2315_MISC_IRQ_WATCHDOG);
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+ ar2315_wdt_res[1].end = ar2315_wdt_res[1].start;
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+ platform_device_register(&ar2315_wdt);
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+
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platform_device_register(&ar2315_spiflash);
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ar2315_eth_data.macaddr = ath25_board.config->enet0_mac;
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