mirror of
https://github.com/openwrt/openwrt.git
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149 lines
4.5 KiB
Diff
149 lines
4.5 KiB
Diff
The RDC321x MFD southbridge driver will pass a reference to the southbridge
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PCI device which should be used by the watchdog driver for its operations.
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This patch converts the watchdog driver to use the pci_dev pointer and make use
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of the base register resource which is passed along with the platform device.
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Acked-by: Wim Van Sebroeck <wim@iguana.be>
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Signed-off-by: Florian Fainelli <florian@openwrt.org>
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---
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Changes from v2:
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- replaced rdc321x_pci_{read,write}
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- use the pci_dev pointer passed as platform_data
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--- a/drivers/watchdog/rdc321x_wdt.c
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+++ b/drivers/watchdog/rdc321x_wdt.c
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@@ -1,7 +1,7 @@
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/*
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* RDC321x watchdog driver
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*
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- * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
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+ * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
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*
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* This driver is highly inspired from the cpu5_wdt driver
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*
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@@ -36,8 +36,7 @@
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#include <linux/watchdog.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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-#include <asm/rdc321x_defs.h>
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+#include <linux/mfd/rdc321x.h>
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#define RDC_WDT_MASK 0x80000000 /* Mask */
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#define RDC_WDT_EN 0x00800000 /* Enable bit */
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@@ -63,6 +62,8 @@ static struct {
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int default_ticks;
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unsigned long inuse;
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spinlock_t lock;
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+ struct pci_dev *sb_pdev;
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+ int base_reg;
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} rdc321x_wdt_device;
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/* generic helper functions */
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@@ -70,14 +71,18 @@ static struct {
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static void rdc321x_wdt_trigger(unsigned long unused)
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{
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unsigned long flags;
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+ u32 val;
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if (rdc321x_wdt_device.running)
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ticks--;
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/* keep watchdog alive */
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spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
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- outl(RDC_WDT_EN | inl(RDC3210_CFGREG_DATA),
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- RDC3210_CFGREG_DATA);
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+ pci_read_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg, &val);
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+ val |= RDC_WDT_EN;
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+ pci_write_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg, val);
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spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
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/* requeue?? */
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@@ -105,10 +110,13 @@ static void rdc321x_wdt_start(void)
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/* Clear the timer */
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spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
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- outl(RDC_CLS_TMR, RDC3210_CFGREG_ADDR);
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+ pci_write_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg, RDC_CLS_TMR);
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/* Enable watchdog and set the timeout to 81.92 us */
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- outl(RDC_WDT_EN | RDC_WDT_CNT, RDC3210_CFGREG_DATA);
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+ pci_write_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg,
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+ RDC_WDT_EN | RDC_WDT_CNT);
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spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
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mod_timer(&rdc321x_wdt_device.timer,
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@@ -148,7 +156,7 @@ static long rdc321x_wdt_ioctl(struct fil
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unsigned long arg)
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{
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void __user *argp = (void __user *)arg;
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- unsigned int value;
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+ u32 value;
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static struct watchdog_info ident = {
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.options = WDIOF_CARDRESET,
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.identity = "RDC321x WDT",
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@@ -162,9 +170,10 @@ static long rdc321x_wdt_ioctl(struct fil
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case WDIOC_GETSTATUS:
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/* Read the value from the DATA register */
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spin_lock_irqsave(&rdc321x_wdt_device.lock, flags);
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- value = inl(RDC3210_CFGREG_DATA);
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+ pci_read_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg, &value);
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spin_unlock_irqrestore(&rdc321x_wdt_device.lock, flags);
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- if (copy_to_user(argp, &value, sizeof(int)))
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+ if (copy_to_user(argp, &value, sizeof(u32)))
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return -EFAULT;
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break;
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case WDIOC_GETSUPPORT:
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@@ -219,17 +228,35 @@ static struct miscdevice rdc321x_wdt_mis
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static int __devinit rdc321x_wdt_probe(struct platform_device *pdev)
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{
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int err;
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+ struct resource *r;
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+ struct rdc321x_wdt_pdata *pdata;
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+
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+ pdata = platform_get_drvdata(pdev);
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+ if (!pdata) {
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+ dev_err(&pdev->dev, "no platform data supplied\n");
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+ return -ENODEV;
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+ }
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+
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+ r = platform_get_resource_byname(pdev, IORESOURCE_IO, "wdt-reg");
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+ if (!r) {
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+ dev_err(&pdev->dev, "failed to get wdt-reg resource\n");
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+ return -ENODEV;
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+ }
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+
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+ rdc321x_wdt_device.sb_pdev = pdata->sb_pdev;
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+ rdc321x_wdt_device.base_reg = r->start;
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err = misc_register(&rdc321x_wdt_misc);
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if (err < 0) {
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- printk(KERN_ERR PFX "watchdog misc_register failed\n");
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+ dev_err(&pdev->dev, "misc_register failed\n");
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return err;
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}
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spin_lock_init(&rdc321x_wdt_device.lock);
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/* Reset the watchdog */
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- outl(RDC_WDT_RST, RDC3210_CFGREG_DATA);
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+ pci_write_config_dword(rdc321x_wdt_device.sb_pdev,
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+ rdc321x_wdt_device.base_reg, RDC_WDT_RST);
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init_completion(&rdc321x_wdt_device.stop);
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rdc321x_wdt_device.queue = 0;
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@@ -240,7 +267,7 @@ static int __devinit rdc321x_wdt_probe(s
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rdc321x_wdt_device.default_ticks = ticks;
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- printk(KERN_INFO PFX "watchdog init success\n");
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+ dev_info(&pdev->dev, "watchdog init success\n");
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return 0;
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}
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