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brcm47xx: update watchdog driver
This watchdog driver should work with SoC having a PMU. This fixes #11720. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34323 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
0b36fa881c
commit
9a462204d1
@ -144,5 +144,6 @@ CONFIG_USB_ARCH_HAS_XHCI=y
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# CONFIG_USB_HCD_BCMA is not set
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# CONFIG_USB_HCD_SSB is not set
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CONFIG_USB_SUPPORT=y
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CONFIG_WATCHDOG_CORE=y
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CONFIG_WATCHDOG_NOWAYOUT=y
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CONFIG_ZONE_DMA_FLAG=0
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@ -0,0 +1,252 @@
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--- a/drivers/watchdog/Kconfig
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+++ b/drivers/watchdog/Kconfig
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@@ -959,6 +959,7 @@ config ATH79_WDT
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config BCM47XX_WDT
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tristate "Broadcom BCM47xx Watchdog Timer"
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depends on BCM47XX
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+ select WATCHDOG_CORE
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help
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Hardware driver for the Broadcom BCM47xx Watchdog Timer.
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--- a/drivers/watchdog/bcm47xx_wdt.c
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+++ b/drivers/watchdog/bcm47xx_wdt.c
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@@ -14,15 +14,12 @@
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#include <linux/bitops.h>
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#include <linux/errno.h>
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-#include <linux/fs.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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-#include <linux/miscdevice.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/reboot.h>
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#include <linux/types.h>
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-#include <linux/uaccess.h>
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#include <linux/watchdog.h>
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#include <linux/timer.h>
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#include <linux/jiffies.h>
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@@ -48,8 +45,6 @@ MODULE_PARM_DESC(nowayout,
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__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
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#endif
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-static unsigned long bcm47xx_wdt_busy;
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-static char expect_release;
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static struct timer_list wdt_timer;
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static atomic_t ticks;
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@@ -97,29 +92,31 @@ static void bcm47xx_timer_tick(unsigned
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}
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}
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-static inline void bcm47xx_wdt_pet(void)
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+static int bcm47xx_wdt_keepalive(struct watchdog_device *wdd)
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{
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atomic_set(&ticks, wdt_time);
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+
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+ return 0;
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}
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-static void bcm47xx_wdt_start(void)
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+static int bcm47xx_wdt_start(struct watchdog_device *wdd)
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{
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bcm47xx_wdt_pet();
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bcm47xx_timer_tick(0);
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+
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+ return 0;
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}
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-static void bcm47xx_wdt_pause(void)
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+static int bcm47xx_wdt_stop(struct watchdog_device *wdd)
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{
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del_timer_sync(&wdt_timer);
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bcm47xx_wdt_hw_stop();
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-}
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-static void bcm47xx_wdt_stop(void)
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-{
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- bcm47xx_wdt_pause();
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+ return 0;
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}
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-static int bcm47xx_wdt_settimeout(int new_time)
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+static int bcm47xx_wdt_set_timeout(struct watchdog_device *wdd,
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+ unsigned int new_time)
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{
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if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
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return -EINVAL;
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@@ -128,51 +125,6 @@ static int bcm47xx_wdt_settimeout(int ne
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return 0;
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}
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-static int bcm47xx_wdt_open(struct inode *inode, struct file *file)
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-{
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- if (test_and_set_bit(0, &bcm47xx_wdt_busy))
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- return -EBUSY;
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-
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- bcm47xx_wdt_start();
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- return nonseekable_open(inode, file);
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-}
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-
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-static int bcm47xx_wdt_release(struct inode *inode, struct file *file)
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-{
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- if (expect_release == 42) {
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- bcm47xx_wdt_stop();
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- } else {
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- pr_crit("Unexpected close, not stopping watchdog!\n");
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- bcm47xx_wdt_start();
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- }
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-
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- clear_bit(0, &bcm47xx_wdt_busy);
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- expect_release = 0;
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- return 0;
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-}
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-
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-static ssize_t bcm47xx_wdt_write(struct file *file, const char __user *data,
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- size_t len, loff_t *ppos)
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-{
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- if (len) {
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- if (!nowayout) {
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- size_t i;
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-
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- expect_release = 0;
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-
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- for (i = 0; i != len; i++) {
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- char c;
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- if (get_user(c, data + i))
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- return -EFAULT;
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- if (c == 'V')
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- expect_release = 42;
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- }
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- }
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- bcm47xx_wdt_pet();
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- }
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- return len;
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-}
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-
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static const struct watchdog_info bcm47xx_wdt_info = {
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.identity = DRV_NAME,
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.options = WDIOF_SETTIMEOUT |
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@@ -180,80 +132,25 @@ static const struct watchdog_info bcm47x
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WDIOF_MAGICCLOSE,
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};
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-static long bcm47xx_wdt_ioctl(struct file *file,
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- unsigned int cmd, unsigned long arg)
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-{
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- void __user *argp = (void __user *)arg;
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- int __user *p = argp;
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- int new_value, retval = -EINVAL;
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-
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- switch (cmd) {
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- case WDIOC_GETSUPPORT:
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- return copy_to_user(argp, &bcm47xx_wdt_info,
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- sizeof(bcm47xx_wdt_info)) ? -EFAULT : 0;
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-
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- case WDIOC_GETSTATUS:
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- case WDIOC_GETBOOTSTATUS:
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- return put_user(0, p);
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-
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- case WDIOC_SETOPTIONS:
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- if (get_user(new_value, p))
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- return -EFAULT;
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-
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- if (new_value & WDIOS_DISABLECARD) {
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- bcm47xx_wdt_stop();
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- retval = 0;
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- }
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-
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- if (new_value & WDIOS_ENABLECARD) {
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- bcm47xx_wdt_start();
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- retval = 0;
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- }
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-
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- return retval;
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-
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- case WDIOC_KEEPALIVE:
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- bcm47xx_wdt_pet();
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- return 0;
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-
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- case WDIOC_SETTIMEOUT:
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- if (get_user(new_value, p))
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- return -EFAULT;
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-
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- if (bcm47xx_wdt_settimeout(new_value))
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- return -EINVAL;
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-
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- bcm47xx_wdt_pet();
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-
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- case WDIOC_GETTIMEOUT:
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- return put_user(wdt_time, p);
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-
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- default:
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- return -ENOTTY;
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- }
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-}
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-
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static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
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- unsigned long code, void *unused)
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+ unsigned long code, void *unused)
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{
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if (code == SYS_DOWN || code == SYS_HALT)
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bcm47xx_wdt_stop();
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return NOTIFY_DONE;
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}
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-static const struct file_operations bcm47xx_wdt_fops = {
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+static struct watchdog_ops bcm47xx_wdt_ops = {
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.owner = THIS_MODULE,
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- .llseek = no_llseek,
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- .unlocked_ioctl = bcm47xx_wdt_ioctl,
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- .open = bcm47xx_wdt_open,
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- .release = bcm47xx_wdt_release,
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- .write = bcm47xx_wdt_write,
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+ .start = bcm47xx_wdt_start,
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+ .stop = bcm47xx_wdt_stop,
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+ .ping = bcm47xx_wdt_keepalive,
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+ .set_timeout = bcm47xx_wdt_set_timeout,
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};
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-static struct miscdevice bcm47xx_wdt_miscdev = {
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- .minor = WATCHDOG_MINOR,
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- .name = "watchdog",
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- .fops = &bcm47xx_wdt_fops,
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+static struct watchdog_device bcm47xx_wdt_wdd = {
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+ .info = &bcm47xx_wdt_info,
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+ .ops = &bcm47xx_wdt_ops,
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};
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static struct notifier_block bcm47xx_wdt_notifier = {
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@@ -274,12 +171,13 @@ static int __init bcm47xx_wdt_init(void)
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pr_info("wdt_time value must be 0 < wdt_time < %d, using %d\n",
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(WDT_MAX_TIME + 1), wdt_time);
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}
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+ watchdog_set_nowayout(&bcm47xx_wdt_wdd, nowayout);
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ret = register_reboot_notifier(&bcm47xx_wdt_notifier);
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if (ret)
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return ret;
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- ret = misc_register(&bcm47xx_wdt_miscdev);
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+ ret = watchdog_register_device(&bcm47xx_wdt_wdd);
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if (ret) {
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unregister_reboot_notifier(&bcm47xx_wdt_notifier);
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return ret;
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@@ -292,10 +190,8 @@ static int __init bcm47xx_wdt_init(void)
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static void __exit bcm47xx_wdt_exit(void)
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{
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- if (!nowayout)
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- bcm47xx_wdt_stop();
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-
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- misc_deregister(&bcm47xx_wdt_miscdev);
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+ watchdog_stop(&bcm47xx_wdt_wdd);
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+ watchdog_unregister_device(&bcm47xx_wdt_wdd);
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unregister_reboot_notifier(&bcm47xx_wdt_notifier);
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}
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@@ -306,4 +202,3 @@ module_exit(bcm47xx_wdt_exit);
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MODULE_AUTHOR("Aleksandar Radovanovic");
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MODULE_DESCRIPTION("Watchdog driver for Broadcom BCM47xx");
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MODULE_LICENSE("GPL");
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-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
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@ -0,0 +1,288 @@
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--- a/drivers/watchdog/bcm47xx_wdt.c
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+++ b/drivers/watchdog/bcm47xx_wdt.c
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@@ -3,6 +3,7 @@
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*
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* Copyright (C) 2008 Aleksandar Radovanovic <biblbroks@sezampro.rs>
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* Copyright (C) 2009 Matthieu CASTET <castet.matthieu@free.fr>
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+ * Copyright (C) 2012 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@@ -12,19 +13,19 @@
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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+#include <linux/bcm47xx_wdt.h>
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#include <linux/bitops.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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+#include <linux/platform_device.h>
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#include <linux/reboot.h>
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#include <linux/types.h>
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#include <linux/watchdog.h>
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#include <linux/timer.h>
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#include <linux/jiffies.h>
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-#include <linux/ssb/ssb_embedded.h>
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-#include <asm/mach-bcm47xx/bcm47xx.h>
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#define DRV_NAME "bcm47xx_wdt"
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@@ -45,48 +46,19 @@ MODULE_PARM_DESC(nowayout,
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__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
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#endif
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-static struct timer_list wdt_timer;
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-static atomic_t ticks;
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-
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-static inline void bcm47xx_wdt_hw_start(void)
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+static inline struct bcm47xx_wdt *bcm47xx_wdt_get(struct watchdog_device *wdd)
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{
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- /* this is 2,5s on 100Mhz clock and 2s on 133 Mhz */
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- switch (bcm47xx_bus_type) {
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-#ifdef CONFIG_BCM47XX_SSB
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- case BCM47XX_BUS_TYPE_SSB:
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- ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0xfffffff);
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- break;
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-#endif
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-#ifdef CONFIG_BCM47XX_BCMA
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- case BCM47XX_BUS_TYPE_BCMA:
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- bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc,
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- 0xfffffff);
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- break;
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-#endif
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- }
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+ return container_of(wdd, struct bcm47xx_wdt, wdd);
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}
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-static inline int bcm47xx_wdt_hw_stop(void)
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+static void bcm47xx_timer_tick(unsigned long data)
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{
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- switch (bcm47xx_bus_type) {
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-#ifdef CONFIG_BCM47XX_SSB
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- case BCM47XX_BUS_TYPE_SSB:
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- return ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0);
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-#endif
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-#ifdef CONFIG_BCM47XX_BCMA
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- case BCM47XX_BUS_TYPE_BCMA:
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- bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, 0);
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- return 0;
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-#endif
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- }
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- return -EINVAL;
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-}
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+ struct bcm47xx_wdt *wdt = (struct bcm47xx_wdt *)data;
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+ u32 next_tick = min(wdt->wdd.timeout * 1000, wdt->max_timer_ms);
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-static void bcm47xx_timer_tick(unsigned long unused)
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-{
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- if (!atomic_dec_and_test(&ticks)) {
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- bcm47xx_wdt_hw_start();
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- mod_timer(&wdt_timer, jiffies + HZ);
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+ if (!atomic_dec_and_test(&wdt->soft_ticks)) {
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+ wdt->timer_set_ms(wdt, next_tick);
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+ mod_timer(&wdt->soft_timer, jiffies + HZ);
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} else {
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pr_crit("Watchdog will fire soon!!!\n");
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}
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@@ -94,23 +66,29 @@ static void bcm47xx_timer_tick(unsigned
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static int bcm47xx_wdt_keepalive(struct watchdog_device *wdd)
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{
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- atomic_set(&ticks, wdt_time);
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+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
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+
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+ atomic_set(&wdt->soft_ticks, wdd->timeout);
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return 0;
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}
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static int bcm47xx_wdt_start(struct watchdog_device *wdd)
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{
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- bcm47xx_wdt_pet();
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- bcm47xx_timer_tick(0);
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+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
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+
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+ bcm47xx_wdt_keepalive(wdd);
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+ bcm47xx_timer_tick((unsigned long)wdt);
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return 0;
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}
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static int bcm47xx_wdt_stop(struct watchdog_device *wdd)
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{
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- del_timer_sync(&wdt_timer);
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- bcm47xx_wdt_hw_stop();
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+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
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+
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+ del_timer_sync(&wdt->soft_timer);
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+ wdt->timer_set(wdt, 0);
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return 0;
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}
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@@ -118,10 +96,13 @@ static int bcm47xx_wdt_stop(struct watch
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static int bcm47xx_wdt_set_timeout(struct watchdog_device *wdd,
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unsigned int new_time)
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{
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- if ((new_time <= 0) || (new_time > WDT_MAX_TIME))
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+ if (new_time < 1 || new_time > WDT_MAX_TIME) {
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+ pr_warn("timeout value must be 1<=x<=%d, using %d\n",
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+ WDT_MAX_TIME, new_time);
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return -EINVAL;
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+ }
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- wdt_time = new_time;
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+ wdd->timeout = new_time;
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return 0;
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}
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@@ -135,8 +116,11 @@ static const struct watchdog_info bcm47x
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static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
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unsigned long code, void *unused)
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{
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+ struct bcm47xx_wdt *wdt;
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+
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+ wdt = container_of(this, struct bcm47xx_wdt, notifier);
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if (code == SYS_DOWN || code == SYS_HALT)
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- bcm47xx_wdt_stop();
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+ wdt->wdd.ops->stop(&wdt->wdd);
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return NOTIFY_DONE;
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}
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@@ -148,57 +132,72 @@ static struct watchdog_ops bcm47xx_wdt_o
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.set_timeout = bcm47xx_wdt_set_timeout,
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};
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-static struct watchdog_device bcm47xx_wdt_wdd = {
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- .info = &bcm47xx_wdt_info,
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- .ops = &bcm47xx_wdt_ops,
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-};
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-
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-static struct notifier_block bcm47xx_wdt_notifier = {
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- .notifier_call = bcm47xx_wdt_notify_sys,
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-};
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-
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-static int __init bcm47xx_wdt_init(void)
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+static int __devinit bcm47xx_wdt_probe(struct platform_device *pdev)
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{
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int ret;
|
||||
+ struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);
|
||||
|
||||
- if (bcm47xx_wdt_hw_stop() < 0)
|
||||
- return -ENODEV;
|
||||
+ if (!wdt)
|
||||
+ return -ENXIO;
|
||||
|
||||
- setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L);
|
||||
+ setup_timer(&wdt->soft_timer, bcm47xx_timer_tick,
|
||||
+ (long unsigned int)wdt);
|
||||
|
||||
- if (bcm47xx_wdt_settimeout(wdt_time)) {
|
||||
- bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME);
|
||||
- pr_info("wdt_time value must be 0 < wdt_time < %d, using %d\n",
|
||||
- (WDT_MAX_TIME + 1), wdt_time);
|
||||
- }
|
||||
- watchdog_set_nowayout(&bcm47xx_wdt_wdd, nowayout);
|
||||
+ wdt->wdd.ops = &bcm47xx_wdt_ops;
|
||||
+ wdt->wdd.info = &bcm47xx_wdt_info;
|
||||
+ wdt->wdd.timeout = WDT_DEFAULT_TIME;
|
||||
+ ret = wdt->wdd.ops->set_timeout(&wdt->wdd, timeout);
|
||||
+ if (ret)
|
||||
+ goto err_timer;
|
||||
+ watchdog_set_nowayout(&wdt->wdd, nowayout);
|
||||
+
|
||||
+ wdt->notifier.notifier_call = &bcm47xx_wdt_notify_sys;
|
||||
|
||||
- ret = register_reboot_notifier(&bcm47xx_wdt_notifier);
|
||||
+ ret = register_reboot_notifier(&wdt->notifier);
|
||||
if (ret)
|
||||
- return ret;
|
||||
+ goto err_timer;
|
||||
|
||||
- ret = watchdog_register_device(&bcm47xx_wdt_wdd);
|
||||
- if (ret) {
|
||||
- unregister_reboot_notifier(&bcm47xx_wdt_notifier);
|
||||
- return ret;
|
||||
- }
|
||||
+ ret = watchdog_register_device(&wdt->wdd);
|
||||
+ if (ret)
|
||||
+ goto err_notifier;
|
||||
|
||||
pr_info("BCM47xx Watchdog Timer enabled (%d seconds%s)\n",
|
||||
wdt_time, nowayout ? ", nowayout" : "");
|
||||
return 0;
|
||||
+
|
||||
+err_notifier:
|
||||
+ unregister_reboot_notifier(&wdt->notifier);
|
||||
+err_timer:
|
||||
+ del_timer_sync(&wdt->soft_timer);
|
||||
+
|
||||
+ return ret;
|
||||
}
|
||||
|
||||
-static void __exit bcm47xx_wdt_exit(void)
|
||||
+static int __devexit bcm47xx_wdt_remove(struct platform_device *pdev)
|
||||
{
|
||||
- watchdog_stop(&bcm47xx_wdt_wdd);
|
||||
- watchdog_unregister_device(&bcm47xx_wdt_wdd);
|
||||
+ struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);
|
||||
+
|
||||
+ if (!wdt)
|
||||
+ return -ENXIO;
|
||||
+
|
||||
+ watchdog_unregister_device(&wdt->wdd);
|
||||
+ unregister_reboot_notifier(&wdt->notifier);
|
||||
|
||||
- unregister_reboot_notifier(&bcm47xx_wdt_notifier);
|
||||
+ return 0;
|
||||
}
|
||||
|
||||
-module_init(bcm47xx_wdt_init);
|
||||
-module_exit(bcm47xx_wdt_exit);
|
||||
+static struct platform_driver bcm47xx_wdt_driver = {
|
||||
+ .driver = {
|
||||
+ .owner = THIS_MODULE,
|
||||
+ .name = "bcm47xx-wdt",
|
||||
+ },
|
||||
+ .probe = bcm47xx_wdt_probe,
|
||||
+ .remove = __devexit_p(bcm47xx_wdt_remove),
|
||||
+};
|
||||
+
|
||||
+module_platform_driver(bcm47xx_wdt_driver);
|
||||
|
||||
MODULE_AUTHOR("Aleksandar Radovanovic");
|
||||
+MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
|
||||
MODULE_DESCRIPTION("Watchdog driver for Broadcom BCM47xx");
|
||||
MODULE_LICENSE("GPL");
|
||||
--- /dev/null
|
||||
+++ b/include/linux/bcm47xx_wdt.h
|
||||
@@ -0,0 +1,27 @@
|
||||
+#ifndef LINUX_BCM47XX_WDT_H_
|
||||
+#define LINUX_BCM47XX_WDT_H_
|
||||
+
|
||||
+#include <linux/notifier.h>
|
||||
+#include <linux/timer.h>
|
||||
+#include <linux/types.h>
|
||||
+#include <linux/watchdog.h>
|
||||
+
|
||||
+
|
||||
+struct bcm47xx_wdt {
|
||||
+ u32 (*timer_set)(struct bcm47xx_wdt *, u32);
|
||||
+ u32 (*timer_set_ms)(struct bcm47xx_wdt *, u32);
|
||||
+
|
||||
+ void *driver_data;
|
||||
+
|
||||
+ struct watchdog_device wdd;
|
||||
+ struct notifier_block notifier;
|
||||
+
|
||||
+ struct timer_list soft_timer;
|
||||
+ atomic_t soft_ticks;
|
||||
+};
|
||||
+
|
||||
+static inline void *bcm47xx_wdt_get_drvdata(struct bcm47xx_wdt *wdt)
|
||||
+{
|
||||
+ return wdt->driver_data;
|
||||
+}
|
||||
+#endif /* LINUX_BCM47XX_WDT_H_ */
|
@ -0,0 +1,90 @@
|
||||
--- a/drivers/watchdog/bcm47xx_wdt.c
|
||||
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
||||
@@ -46,12 +46,13 @@ MODULE_PARM_DESC(nowayout,
|
||||
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
|
||||
#endif
|
||||
|
||||
+
|
||||
static inline struct bcm47xx_wdt *bcm47xx_wdt_get(struct watchdog_device *wdd)
|
||||
{
|
||||
return container_of(wdd, struct bcm47xx_wdt, wdd);
|
||||
}
|
||||
|
||||
-static void bcm47xx_timer_tick(unsigned long data)
|
||||
+static void bcm47xx_wdt_soft_timer_tick(unsigned long data)
|
||||
{
|
||||
struct bcm47xx_wdt *wdt = (struct bcm47xx_wdt *)data;
|
||||
u32 next_tick = min(wdt->wdd.timeout * 1000, wdt->max_timer_ms);
|
||||
@@ -64,7 +65,7 @@ static void bcm47xx_timer_tick(unsigned
|
||||
}
|
||||
}
|
||||
|
||||
-static int bcm47xx_wdt_keepalive(struct watchdog_device *wdd)
|
||||
+static int bcm47xx_wdt_soft_keepalive(struct watchdog_device *wdd)
|
||||
{
|
||||
struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
|
||||
@@ -73,17 +74,17 @@ static int bcm47xx_wdt_keepalive(struct
|
||||
return 0;
|
||||
}
|
||||
|
||||
-static int bcm47xx_wdt_start(struct watchdog_device *wdd)
|
||||
+static int bcm47xx_wdt_soft_start(struct watchdog_device *wdd)
|
||||
{
|
||||
struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
|
||||
- bcm47xx_wdt_keepalive(wdd);
|
||||
- bcm47xx_timer_tick((unsigned long)wdt);
|
||||
+ bcm47xx_wdt_soft_keepalive(wdd);
|
||||
+ bcm47xx_wdt_soft_timer_tick((unsigned long)wdt);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
-static int bcm47xx_wdt_stop(struct watchdog_device *wdd)
|
||||
+static int bcm47xx_wdt_soft_stop(struct watchdog_device *wdd)
|
||||
{
|
||||
struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
|
||||
@@ -93,8 +94,8 @@ static int bcm47xx_wdt_stop(struct watch
|
||||
return 0;
|
||||
}
|
||||
|
||||
-static int bcm47xx_wdt_set_timeout(struct watchdog_device *wdd,
|
||||
- unsigned int new_time)
|
||||
+static int bcm47xx_wdt_soft_set_timeout(struct watchdog_device *wdd,
|
||||
+ unsigned int new_time)
|
||||
{
|
||||
if (new_time < 1 || new_time > WDT_MAX_TIME) {
|
||||
pr_warn("timeout value must be 1<=x<=%d, using %d\n",
|
||||
@@ -124,12 +125,12 @@ static int bcm47xx_wdt_notify_sys(struct
|
||||
return NOTIFY_DONE;
|
||||
}
|
||||
|
||||
-static struct watchdog_ops bcm47xx_wdt_ops = {
|
||||
+static struct watchdog_ops bcm47xx_wdt_soft_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
- .start = bcm47xx_wdt_start,
|
||||
- .stop = bcm47xx_wdt_stop,
|
||||
- .ping = bcm47xx_wdt_keepalive,
|
||||
- .set_timeout = bcm47xx_wdt_set_timeout,
|
||||
+ .start = bcm47xx_wdt_soft_start,
|
||||
+ .stop = bcm47xx_wdt_soft_stop,
|
||||
+ .ping = bcm47xx_wdt_soft_keepalive,
|
||||
+ .set_timeout = bcm47xx_wdt_soft_set_timeout,
|
||||
};
|
||||
|
||||
static int __devinit bcm47xx_wdt_probe(struct platform_device *pdev)
|
||||
@@ -140,10 +141,10 @@ static int __devinit bcm47xx_wdt_probe(s
|
||||
if (!wdt)
|
||||
return -ENXIO;
|
||||
|
||||
- setup_timer(&wdt->soft_timer, bcm47xx_timer_tick,
|
||||
+ setup_timer(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick,
|
||||
(long unsigned int)wdt);
|
||||
|
||||
- wdt->wdd.ops = &bcm47xx_wdt_ops;
|
||||
+ wdt->wdd.ops = &bcm47xx_wdt_soft_ops;
|
||||
wdt->wdd.info = &bcm47xx_wdt_info;
|
||||
wdt->wdd.timeout = WDT_DEFAULT_TIME;
|
||||
ret = wdt->wdd.ops->set_timeout(&wdt->wdd, timeout);
|
@ -0,0 +1,41 @@
|
||||
--- a/drivers/watchdog/bcm47xx_wdt.c
|
||||
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
||||
@@ -30,13 +30,13 @@
|
||||
#define DRV_NAME "bcm47xx_wdt"
|
||||
|
||||
#define WDT_DEFAULT_TIME 30 /* seconds */
|
||||
-#define WDT_MAX_TIME 255 /* seconds */
|
||||
+#define WDT_SOFTTIMER_MAX 3600 /* seconds */
|
||||
|
||||
-static int wdt_time = WDT_DEFAULT_TIME;
|
||||
+static int timeout = WDT_DEFAULT_TIME;
|
||||
static bool nowayout = WATCHDOG_NOWAYOUT;
|
||||
|
||||
-module_param(wdt_time, int, 0);
|
||||
-MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
|
||||
+module_param(timeout, int, 0);
|
||||
+MODULE_PARM_DESC(timeout, "Watchdog time in seconds. (default="
|
||||
__MODULE_STRING(WDT_DEFAULT_TIME) ")");
|
||||
|
||||
#ifdef CONFIG_WATCHDOG_NOWAYOUT
|
||||
@@ -97,9 +97,9 @@ static int bcm47xx_wdt_soft_stop(struct
|
||||
static int bcm47xx_wdt_soft_set_timeout(struct watchdog_device *wdd,
|
||||
unsigned int new_time)
|
||||
{
|
||||
- if (new_time < 1 || new_time > WDT_MAX_TIME) {
|
||||
+ if (new_time < 1 || new_time > WDT_SOFTTIMER_MAX) {
|
||||
pr_warn("timeout value must be 1<=x<=%d, using %d\n",
|
||||
- WDT_MAX_TIME, new_time);
|
||||
+ WDT_SOFTTIMER_MAX, new_time);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
@@ -163,7 +163,7 @@ static int __devinit bcm47xx_wdt_probe(s
|
||||
goto err_notifier;
|
||||
|
||||
pr_info("BCM47xx Watchdog Timer enabled (%d seconds%s)\n",
|
||||
- wdt_time, nowayout ? ", nowayout" : "");
|
||||
+ timeout, nowayout ? ", nowayout" : "");
|
||||
return 0;
|
||||
|
||||
err_notifier:
|
@ -0,0 +1,120 @@
|
||||
--- a/drivers/watchdog/bcm47xx_wdt.c
|
||||
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
||||
@@ -31,6 +31,7 @@
|
||||
|
||||
#define WDT_DEFAULT_TIME 30 /* seconds */
|
||||
#define WDT_SOFTTIMER_MAX 3600 /* seconds */
|
||||
+#define WDT_SOFTTIMER_THRESHOLD 60 /* seconds */
|
||||
|
||||
static int timeout = WDT_DEFAULT_TIME;
|
||||
static bool nowayout = WATCHDOG_NOWAYOUT;
|
||||
@@ -52,6 +53,53 @@ static inline struct bcm47xx_wdt *bcm47x
|
||||
return container_of(wdd, struct bcm47xx_wdt, wdd);
|
||||
}
|
||||
|
||||
+static int bcm47xx_wdt_hard_keepalive(struct watchdog_device *wdd)
|
||||
+{
|
||||
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
+
|
||||
+ wdt->timer_set_ms(wdt, wdd->timeout * 1000);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm47xx_wdt_hard_start(struct watchdog_device *wdd)
|
||||
+{
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm47xx_wdt_hard_stop(struct watchdog_device *wdd)
|
||||
+{
|
||||
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
+
|
||||
+ wdt->timer_set(wdt, 0);
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static int bcm47xx_wdt_hard_set_timeout(struct watchdog_device *wdd,
|
||||
+ unsigned int new_time)
|
||||
+{
|
||||
+ struct bcm47xx_wdt *wdt = bcm47xx_wdt_get(wdd);
|
||||
+ u32 max_timer = wdt->max_timer_ms;
|
||||
+
|
||||
+ if (new_time < 1 || new_time > max_timer / 1000) {
|
||||
+ pr_warn("timeout value must be 1<=x<=%d, using %d\n",
|
||||
+ max_timer / 1000, new_time);
|
||||
+ return -EINVAL;
|
||||
+ }
|
||||
+
|
||||
+ wdd->timeout = new_time;
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static struct watchdog_ops bcm47xx_wdt_hard_ops = {
|
||||
+ .owner = THIS_MODULE,
|
||||
+ .start = bcm47xx_wdt_hard_start,
|
||||
+ .stop = bcm47xx_wdt_hard_stop,
|
||||
+ .ping = bcm47xx_wdt_hard_keepalive,
|
||||
+ .set_timeout = bcm47xx_wdt_hard_set_timeout,
|
||||
+};
|
||||
+
|
||||
static void bcm47xx_wdt_soft_timer_tick(unsigned long data)
|
||||
{
|
||||
struct bcm47xx_wdt *wdt = (struct bcm47xx_wdt *)data;
|
||||
@@ -136,15 +184,22 @@ static struct watchdog_ops bcm47xx_wdt_s
|
||||
static int __devinit bcm47xx_wdt_probe(struct platform_device *pdev)
|
||||
{
|
||||
int ret;
|
||||
+ bool soft;
|
||||
struct bcm47xx_wdt *wdt = dev_get_platdata(&pdev->dev);
|
||||
|
||||
if (!wdt)
|
||||
return -ENXIO;
|
||||
|
||||
- setup_timer(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick,
|
||||
- (long unsigned int)wdt);
|
||||
+ soft = wdt->max_timer_ms < WDT_SOFTTIMER_THRESHOLD * 1000;
|
||||
+
|
||||
+ if (soft) {
|
||||
+ wdt->wdd.ops = &bcm47xx_wdt_soft_ops;
|
||||
+ setup_timer(&wdt->soft_timer, bcm47xx_wdt_soft_timer_tick,
|
||||
+ (long unsigned int)wdt);
|
||||
+ } else {
|
||||
+ wdt->wdd.ops = &bcm47xx_wdt_hard_ops;
|
||||
+ }
|
||||
|
||||
- wdt->wdd.ops = &bcm47xx_wdt_soft_ops;
|
||||
wdt->wdd.info = &bcm47xx_wdt_info;
|
||||
wdt->wdd.timeout = WDT_DEFAULT_TIME;
|
||||
ret = wdt->wdd.ops->set_timeout(&wdt->wdd, timeout);
|
||||
@@ -162,14 +217,16 @@ static int __devinit bcm47xx_wdt_probe(s
|
||||
if (ret)
|
||||
goto err_notifier;
|
||||
|
||||
- pr_info("BCM47xx Watchdog Timer enabled (%d seconds%s)\n",
|
||||
- timeout, nowayout ? ", nowayout" : "");
|
||||
+ dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
|
||||
+ timeout, nowayout ? ", nowayout" : "",
|
||||
+ soft ? ", Software Timer" : "");
|
||||
return 0;
|
||||
|
||||
err_notifier:
|
||||
unregister_reboot_notifier(&wdt->notifier);
|
||||
err_timer:
|
||||
- del_timer_sync(&wdt->soft_timer);
|
||||
+ if (soft)
|
||||
+ del_timer_sync(&wdt->soft_timer);
|
||||
|
||||
return ret;
|
||||
}
|
||||
--- a/include/linux/bcm47xx_wdt.h
|
||||
+++ b/include/linux/bcm47xx_wdt.h
|
||||
@@ -10,6 +10,7 @@
|
||||
struct bcm47xx_wdt {
|
||||
u32 (*timer_set)(struct bcm47xx_wdt *, u32);
|
||||
u32 (*timer_set_ms)(struct bcm47xx_wdt *, u32);
|
||||
+ u32 max_timer_ms;
|
||||
|
||||
void *driver_data;
|
||||
|
@ -0,0 +1,35 @@
|
||||
--- a/drivers/bcma/driver_chipcommon.c
|
||||
+++ b/drivers/bcma/driver_chipcommon.c
|
||||
@@ -4,6 +4,7 @@
|
||||
*
|
||||
* Copyright 2005, Broadcom Corporation
|
||||
* Copyright 2006, 2007, Michael Buesch <m@bues.ch>
|
||||
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
|
||||
*
|
||||
* Licensed under the GNU/GPL. See COPYING for details.
|
||||
*/
|
||||
@@ -22,6 +23,14 @@ static inline u32 bcma_cc_write32_masked
|
||||
return value;
|
||||
}
|
||||
|
||||
+static u32 bcma_chipco_alp_clock(struct bcma_drv_cc *cc)
|
||||
+{
|
||||
+ if (cc->capabilities & BCMA_CC_CAP_PMU)
|
||||
+ return bcma_pmu_alp_clock(cc);
|
||||
+
|
||||
+ return 20000000;
|
||||
+}
|
||||
+
|
||||
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
|
||||
{
|
||||
if (cc->early_setup_done)
|
||||
@@ -180,8 +189,7 @@ void bcma_chipco_serial_init(struct bcma
|
||||
struct bcma_serial_port *ports = cc->serial_ports;
|
||||
|
||||
if (ccrev >= 11 && ccrev != 15) {
|
||||
- /* Fixed ALP clock */
|
||||
- baud_base = bcma_pmu_alp_clock(cc);
|
||||
+ baud_base = bcma_chipco_alp_clock(cc);
|
||||
if (ccrev >= 21) {
|
||||
/* Turn off UART clock before switching clocksource. */
|
||||
bcma_cc_write32(cc, BCMA_CC_CORECTL,
|
@ -0,0 +1,57 @@
|
||||
--- a/drivers/bcma/driver_chipcommon.c
|
||||
+++ b/drivers/bcma/driver_chipcommon.c
|
||||
@@ -31,6 +31,28 @@ static u32 bcma_chipco_alp_clock(struct
|
||||
return 20000000;
|
||||
}
|
||||
|
||||
+static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
|
||||
+{
|
||||
+ struct bcma_bus *bus = cc->core->bus;
|
||||
+ u32 nb;
|
||||
+
|
||||
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
|
||||
+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
|
||||
+ nb = 32;
|
||||
+ else if (cc->core->id.rev < 26)
|
||||
+ nb = 16;
|
||||
+ else
|
||||
+ nb = (cc->core->id.rev >= 37) ? 32 : 24;
|
||||
+ } else {
|
||||
+ nb = 28;
|
||||
+ }
|
||||
+ if (nb == 32)
|
||||
+ return 0xffffffff;
|
||||
+ else
|
||||
+ return (1 << nb) - 1;
|
||||
+}
|
||||
+
|
||||
+
|
||||
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
|
||||
{
|
||||
if (cc->early_setup_done)
|
||||
@@ -87,8 +109,23 @@ void bcma_core_chipcommon_init(struct bc
|
||||
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
|
||||
void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
|
||||
{
|
||||
- /* instant NMI */
|
||||
- bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
|
||||
+ u32 maxt;
|
||||
+ enum bcma_clkmode clkmode;
|
||||
+
|
||||
+ maxt = bcma_chipco_watchdog_get_max_timer(cc);
|
||||
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
|
||||
+ if (ticks == 1)
|
||||
+ ticks = 2;
|
||||
+ else if (ticks > maxt)
|
||||
+ ticks = maxt;
|
||||
+ bcma_cc_write32(cc, BCMA_CC_PMU_WATCHDOG, ticks);
|
||||
+ } else {
|
||||
+ clkmode = ticks ? BCMA_CLKMODE_FAST : BCMA_CLKMODE_DYNAMIC;
|
||||
+ bcma_core_set_clockmode(cc->core, clkmode);
|
||||
+ if (ticks > maxt)
|
||||
+ ticks = maxt;
|
||||
+ bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
|
||||
+ }
|
||||
}
|
||||
|
||||
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
|
@ -0,0 +1,93 @@
|
||||
--- a/drivers/bcma/driver_chipcommon.c
|
||||
+++ b/drivers/bcma/driver_chipcommon.c
|
||||
@@ -10,6 +10,7 @@
|
||||
*/
|
||||
|
||||
#include "bcma_private.h"
|
||||
+#include <linux/bcm47xx_wdt.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/bcma/bcma.h>
|
||||
|
||||
@@ -52,6 +53,39 @@ static u32 bcma_chipco_watchdog_get_max_
|
||||
return (1 << nb) - 1;
|
||||
}
|
||||
|
||||
+static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
|
||||
+ u32 ticks)
|
||||
+{
|
||||
+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+
|
||||
+ return bcma_chipco_watchdog_timer_set(cc, ticks);
|
||||
+}
|
||||
+
|
||||
+static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt,
|
||||
+ u32 ms)
|
||||
+{
|
||||
+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+ u32 ticks;
|
||||
+
|
||||
+ ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
|
||||
+ return ticks / cc->ticks_per_ms;
|
||||
+}
|
||||
+
|
||||
+static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
|
||||
+{
|
||||
+ struct bcma_bus *bus = cc->core->bus;
|
||||
+
|
||||
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
|
||||
+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
|
||||
+ /* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP clock */
|
||||
+ return bcma_chipco_alp_clock(cc) / 4000;
|
||||
+ else
|
||||
+ /* based on 32KHz ILP clock */
|
||||
+ return 32;
|
||||
+ } else {
|
||||
+ return bcma_chipco_alp_clock(cc) / 1000;
|
||||
+ }
|
||||
+}
|
||||
|
||||
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
|
||||
{
|
||||
@@ -102,12 +136,13 @@ void bcma_core_chipcommon_init(struct bc
|
||||
}
|
||||
|
||||
spin_lock_init(&cc->gpio_lock);
|
||||
+ cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);
|
||||
|
||||
cc->setup_done = true;
|
||||
}
|
||||
|
||||
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
|
||||
-void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
|
||||
+u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
|
||||
{
|
||||
u32 maxt;
|
||||
enum bcma_clkmode clkmode;
|
||||
@@ -126,6 +161,7 @@ void bcma_chipco_watchdog_timer_set(stru
|
||||
ticks = maxt;
|
||||
bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
|
||||
}
|
||||
+ return ticks;
|
||||
}
|
||||
|
||||
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
|
||||
--- a/include/linux/bcma/bcma_driver_chipcommon.h
|
||||
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
|
||||
@@ -554,6 +554,7 @@ struct bcma_drv_cc {
|
||||
|
||||
/* Lock for GPIO register access. */
|
||||
spinlock_t gpio_lock;
|
||||
+ u32 ticks_per_ms;
|
||||
};
|
||||
|
||||
/* Register access */
|
||||
@@ -577,8 +578,7 @@ extern void bcma_chipco_resume(struct bc
|
||||
|
||||
void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable);
|
||||
|
||||
-extern void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc,
|
||||
- u32 ticks);
|
||||
+extern u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks);
|
||||
|
||||
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value);
|
||||
|
@ -0,0 +1,92 @@
|
||||
--- a/drivers/bcma/bcma_private.h
|
||||
+++ b/drivers/bcma/bcma_private.h
|
||||
@@ -85,6 +85,8 @@ extern void __exit bcma_host_pci_exit(vo
|
||||
/* driver_pci.c */
|
||||
u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address);
|
||||
|
||||
+extern int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc);
|
||||
+
|
||||
#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
|
||||
bool __devinit bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc);
|
||||
void __devinit bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc);
|
||||
--- a/drivers/bcma/driver_chipcommon.c
|
||||
+++ b/drivers/bcma/driver_chipcommon.c
|
||||
@@ -12,6 +12,7 @@
|
||||
#include "bcma_private.h"
|
||||
#include <linux/bcm47xx_wdt.h>
|
||||
#include <linux/export.h>
|
||||
+#include <linux/platform_device.h>
|
||||
#include <linux/bcma/bcma.h>
|
||||
|
||||
static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
|
||||
@@ -87,6 +88,27 @@ static int bcma_chipco_watchdog_ticks_pe
|
||||
}
|
||||
}
|
||||
|
||||
+int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
|
||||
+{
|
||||
+ struct bcm47xx_wdt wdt = {};
|
||||
+ struct platform_device *pdev;
|
||||
+
|
||||
+ wdt.driver_data = cc;
|
||||
+ wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt;
|
||||
+ wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt;
|
||||
+ wdt.max_timer_ms = bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
|
||||
+
|
||||
+ pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
|
||||
+ cc->core->bus->num, &wdt,
|
||||
+ sizeof(wdt));
|
||||
+ if (IS_ERR(pdev))
|
||||
+ return PTR_ERR(pdev);
|
||||
+
|
||||
+ cc->watchdog = pdev;
|
||||
+
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
|
||||
{
|
||||
if (cc->early_setup_done)
|
||||
--- a/drivers/bcma/main.c
|
||||
+++ b/drivers/bcma/main.c
|
||||
@@ -173,6 +173,12 @@ static int bcma_register_cores(struct bc
|
||||
}
|
||||
#endif
|
||||
|
||||
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
|
||||
+ err = bcma_chipco_watchdog_register(&bus->drv_cc);
|
||||
+ if (err)
|
||||
+ bcma_err(bus, "Error registering watchdog driver\n");
|
||||
+ }
|
||||
+
|
||||
return 0;
|
||||
}
|
||||
|
||||
@@ -185,6 +191,8 @@ static void bcma_unregister_cores(struct
|
||||
if (core->dev_registered)
|
||||
device_unregister(&core->dev);
|
||||
}
|
||||
+ if (bus->hosttype == BCMA_HOSTTYPE_SOC)
|
||||
+ platform_device_unregister(bus->drv_cc.watchdog);
|
||||
}
|
||||
|
||||
int __devinit bcma_bus_register(struct bcma_bus *bus)
|
||||
--- a/include/linux/bcma/bcma_driver_chipcommon.h
|
||||
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
|
||||
@@ -4,6 +4,8 @@
|
||||
#include <linux/mtd/bcm47xx_sflash.h>
|
||||
#include <linux/mtd/bcm47xx_nand.h>
|
||||
|
||||
+#include <linux/platform_device.h>
|
||||
+
|
||||
/** ChipCommon core registers. **/
|
||||
#define BCMA_CC_ID 0x0000
|
||||
#define BCMA_CC_ID_ID 0x0000FFFF
|
||||
@@ -555,6 +557,7 @@ struct bcma_drv_cc {
|
||||
/* Lock for GPIO register access. */
|
||||
spinlock_t gpio_lock;
|
||||
u32 ticks_per_ms;
|
||||
+ struct platform_device *watchdog;
|
||||
};
|
||||
|
||||
/* Register access */
|
@ -0,0 +1,76 @@
|
||||
--- a/drivers/ssb/driver_chipcommon.c
|
||||
+++ b/drivers/ssb/driver_chipcommon.c
|
||||
@@ -280,6 +280,14 @@ static void calc_fast_powerup_delay(stru
|
||||
cc->fast_pwrup_delay = tmp;
|
||||
}
|
||||
|
||||
+static u32 ssb_chipco_alp_clock(struct ssb_chipcommon *cc)
|
||||
+{
|
||||
+ if (cc->capabilities & SSB_CHIPCO_CAP_PMU)
|
||||
+ return ssb_pmu_get_alp_clock(cc);
|
||||
+
|
||||
+ return 20000000;
|
||||
+}
|
||||
+
|
||||
void ssb_chipcommon_init(struct ssb_chipcommon *cc)
|
||||
{
|
||||
if (!cc->dev)
|
||||
@@ -474,11 +482,7 @@ int ssb_chipco_serial_init(struct ssb_ch
|
||||
| SSB_CHIPCO_CORECTL_UARTCLK0);
|
||||
} else if ((ccrev >= 11) && (ccrev != 15)) {
|
||||
/* Fixed ALP clock */
|
||||
- baud_base = 20000000;
|
||||
- if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
|
||||
- /* FIXME: baud_base is different for devices with a PMU */
|
||||
- SSB_WARN_ON(1);
|
||||
- }
|
||||
+ baud_base = ssb_chipco_alp_clock(cc);
|
||||
div = 1;
|
||||
if (ccrev >= 21) {
|
||||
/* Turn off UART clock before switching clocksource. */
|
||||
--- a/drivers/ssb/driver_chipcommon_pmu.c
|
||||
+++ b/drivers/ssb/driver_chipcommon_pmu.c
|
||||
@@ -618,6 +618,33 @@ void ssb_pmu_set_ldo_paref(struct ssb_ch
|
||||
EXPORT_SYMBOL(ssb_pmu_set_ldo_voltage);
|
||||
EXPORT_SYMBOL(ssb_pmu_set_ldo_paref);
|
||||
|
||||
+static u32 ssb_pmu_get_alp_clock_clk0(struct ssb_chipcommon *cc)
|
||||
+{
|
||||
+ u32 crystalfreq;
|
||||
+ const struct pmu0_plltab_entry *e = NULL;
|
||||
+
|
||||
+ crystalfreq = chipco_read32(cc, SSB_CHIPCO_PMU_CTL) &
|
||||
+ SSB_CHIPCO_PMU_CTL_XTALFREQ >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT;
|
||||
+ e = pmu0_plltab_find_entry(crystalfreq);
|
||||
+ BUG_ON(!e);
|
||||
+ return e->freq * 1000;
|
||||
+}
|
||||
+
|
||||
+u32 ssb_pmu_get_alp_clock(struct ssb_chipcommon *cc)
|
||||
+{
|
||||
+ struct ssb_bus *bus = cc->dev->bus;
|
||||
+
|
||||
+ switch (bus->chip_id) {
|
||||
+ case 0x5354:
|
||||
+ ssb_pmu_get_alp_clock_clk0(cc);
|
||||
+ default:
|
||||
+ ssb_printk(KERN_ERR PFX
|
||||
+ "ERROR: PMU alp clock unknown for device %04X\n",
|
||||
+ bus->chip_id);
|
||||
+ return 0;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc)
|
||||
{
|
||||
struct ssb_bus *bus = cc->dev->bus;
|
||||
--- a/drivers/ssb/ssb_private.h
|
||||
+++ b/drivers/ssb/ssb_private.h
|
||||
@@ -210,6 +210,7 @@ static inline void b43_pci_ssb_bridge_ex
|
||||
/* driver_chipcommon_pmu.c */
|
||||
extern u32 ssb_pmu_get_cpu_clock(struct ssb_chipcommon *cc);
|
||||
extern u32 ssb_pmu_get_controlclock(struct ssb_chipcommon *cc);
|
||||
+extern u32 ssb_pmu_get_alp_clock(struct ssb_chipcommon *cc);
|
||||
|
||||
#ifdef CONFIG_SSB_SFLASH
|
||||
/* driver_chipcommon_sflash.c */
|
@ -0,0 +1,54 @@
|
||||
--- a/drivers/ssb/driver_chipcommon.c
|
||||
+++ b/drivers/ssb/driver_chipcommon.c
|
||||
@@ -288,6 +288,24 @@ static u32 ssb_chipco_alp_clock(struct s
|
||||
return 20000000;
|
||||
}
|
||||
|
||||
+static u32 ssb_chipco_watchdog_get_max_timer(struct ssb_chipcommon *cc)
|
||||
+{
|
||||
+ u32 nb;
|
||||
+
|
||||
+ if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
|
||||
+ if (cc->dev->id.revision < 26)
|
||||
+ nb = 16;
|
||||
+ else
|
||||
+ nb = (cc->dev->id.revision >= 37) ? 32 : 24;
|
||||
+ } else {
|
||||
+ nb = 28;
|
||||
+ }
|
||||
+ if (nb == 32)
|
||||
+ return 0xffffffff;
|
||||
+ else
|
||||
+ return (1 << nb) - 1;
|
||||
+}
|
||||
+
|
||||
void ssb_chipcommon_init(struct ssb_chipcommon *cc)
|
||||
{
|
||||
if (!cc->dev)
|
||||
@@ -405,8 +423,24 @@ void ssb_chipco_timing_init(struct ssb_c
|
||||
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
|
||||
void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
|
||||
{
|
||||
- /* instant NMI */
|
||||
- chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
|
||||
+ u32 maxt;
|
||||
+ enum ssb_clkmode clkmode;
|
||||
+
|
||||
+ maxt = ssb_chipco_watchdog_get_max_timer(cc);
|
||||
+ if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
|
||||
+ if (ticks == 1)
|
||||
+ ticks = 2;
|
||||
+ else if (ticks > maxt)
|
||||
+ ticks = maxt;
|
||||
+ chipco_write32(cc, SSB_CHIPCO_PMU_WATCHDOG, ticks);
|
||||
+ } else {
|
||||
+ clkmode = ticks ? SSB_CLKMODE_FAST : SSB_CLKMODE_DYNAMIC;
|
||||
+ ssb_chipco_set_clockmode(cc, clkmode);
|
||||
+ if (ticks > maxt)
|
||||
+ ticks = maxt;
|
||||
+ /* instant NMI */
|
||||
+ chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
|
||||
+ }
|
||||
}
|
||||
|
||||
void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value)
|
@ -0,0 +1,131 @@
|
||||
--- a/drivers/ssb/driver_chipcommon.c
|
||||
+++ b/drivers/ssb/driver_chipcommon.c
|
||||
@@ -4,6 +4,7 @@
|
||||
*
|
||||
* Copyright 2005, Broadcom Corporation
|
||||
* Copyright 2006, 2007, Michael Buesch <m@bues.ch>
|
||||
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
|
||||
*
|
||||
* Licensed under the GNU/GPL. See COPYING for details.
|
||||
*/
|
||||
@@ -12,6 +13,7 @@
|
||||
#include <linux/ssb/ssb_regs.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/pci.h>
|
||||
+#include <linux/bcm47xx_wdt.h>
|
||||
|
||||
#include "ssb_private.h"
|
||||
|
||||
@@ -306,6 +308,43 @@ static u32 ssb_chipco_watchdog_get_max_t
|
||||
return (1 << nb) - 1;
|
||||
}
|
||||
|
||||
+u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks)
|
||||
+{
|
||||
+ struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+
|
||||
+ if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
|
||||
+ return 0;
|
||||
+
|
||||
+ return ssb_chipco_watchdog_timer_set(cc, ticks);
|
||||
+}
|
||||
+
|
||||
+u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms)
|
||||
+{
|
||||
+ struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+ u32 ticks;
|
||||
+
|
||||
+ if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
|
||||
+ return 0;
|
||||
+
|
||||
+ ticks = ssb_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
|
||||
+ return ticks / cc->ticks_per_ms;
|
||||
+}
|
||||
+
|
||||
+static int ssb_chipco_watchdog_ticks_per_ms(struct ssb_chipcommon *cc)
|
||||
+{
|
||||
+ struct ssb_bus *bus = cc->dev->bus;
|
||||
+
|
||||
+ if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
|
||||
+ /* based on 32KHz ILP clock */
|
||||
+ return 32;
|
||||
+ } else {
|
||||
+ if (cc->dev->id.revision < 18)
|
||||
+ return ssb_clockspeed(bus) / 1000;
|
||||
+ else
|
||||
+ return ssb_chipco_alp_clock(cc) / 1000;
|
||||
+ }
|
||||
+}
|
||||
+
|
||||
void ssb_chipcommon_init(struct ssb_chipcommon *cc)
|
||||
{
|
||||
if (!cc->dev)
|
||||
@@ -323,6 +362,11 @@ void ssb_chipcommon_init(struct ssb_chip
|
||||
chipco_powercontrol_init(cc);
|
||||
ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
|
||||
calc_fast_powerup_delay(cc);
|
||||
+
|
||||
+ if (cc->dev->bus->bustype == SSB_BUSTYPE_SSB) {
|
||||
+ cc->ticks_per_ms = ssb_chipco_watchdog_ticks_per_ms(cc);
|
||||
+ cc->max_timer_ms = ssb_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
|
||||
+ }
|
||||
}
|
||||
|
||||
void ssb_chipco_suspend(struct ssb_chipcommon *cc)
|
||||
@@ -421,7 +465,7 @@ void ssb_chipco_timing_init(struct ssb_c
|
||||
}
|
||||
|
||||
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
|
||||
-void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
|
||||
+u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
|
||||
{
|
||||
u32 maxt;
|
||||
enum ssb_clkmode clkmode;
|
||||
@@ -441,6 +485,7 @@ void ssb_chipco_watchdog_timer_set(struc
|
||||
/* instant NMI */
|
||||
chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
|
||||
}
|
||||
+ return ticks;
|
||||
}
|
||||
|
||||
void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value)
|
||||
--- a/drivers/ssb/ssb_private.h
|
||||
+++ b/drivers/ssb/ssb_private.h
|
||||
@@ -3,6 +3,7 @@
|
||||
|
||||
#include <linux/ssb/ssb.h>
|
||||
#include <linux/types.h>
|
||||
+#include <linux/bcm47xx_wdt.h>
|
||||
|
||||
|
||||
#define PFX "ssb: "
|
||||
@@ -226,4 +227,8 @@ static inline int ssb_sflash_init(struct
|
||||
|
||||
extern struct platform_device ssb_pflash_dev;
|
||||
|
||||
+extern u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
|
||||
+ u32 ticks);
|
||||
+extern u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
|
||||
+
|
||||
#endif /* LINUX_SSB_PRIVATE_H_ */
|
||||
--- a/include/linux/ssb/ssb_driver_chipcommon.h
|
||||
+++ b/include/linux/ssb/ssb_driver_chipcommon.h
|
||||
@@ -607,6 +607,8 @@ struct ssb_chipcommon {
|
||||
#ifdef CONFIG_SSB_SFLASH
|
||||
struct bcm47xx_sflash sflash;
|
||||
#endif
|
||||
+ u32 ticks_per_ms;
|
||||
+ u32 max_timer_ms;
|
||||
};
|
||||
|
||||
static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
|
||||
@@ -646,8 +648,7 @@ enum ssb_clkmode {
|
||||
extern void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
|
||||
enum ssb_clkmode mode);
|
||||
|
||||
-extern void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc,
|
||||
- u32 ticks);
|
||||
+extern u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks);
|
||||
|
||||
void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value);
|
||||
|
@ -0,0 +1,25 @@
|
||||
--- a/drivers/ssb/driver_extif.c
|
||||
+++ b/drivers/ssb/driver_extif.c
|
||||
@@ -112,9 +112,10 @@ void ssb_extif_get_clockcontrol(struct s
|
||||
*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
|
||||
}
|
||||
|
||||
-void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
|
||||
- u32 ticks)
|
||||
+void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
|
||||
{
|
||||
+ if (ticks > SSB_EXTIF_WATCHDOG_MAX_TIMER)
|
||||
+ ticks = SSB_EXTIF_WATCHDOG_MAX_TIMER;
|
||||
extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks);
|
||||
}
|
||||
|
||||
--- a/include/linux/ssb/ssb_driver_extif.h
|
||||
+++ b/include/linux/ssb/ssb_driver_extif.h
|
||||
@@ -152,6 +152,7 @@
|
||||
/* watchdog */
|
||||
#define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */
|
||||
|
||||
+#define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1)
|
||||
|
||||
|
||||
#ifdef CONFIG_SSB_DRIVER_EXTIF
|
@ -0,0 +1,89 @@
|
||||
--- a/drivers/ssb/driver_extif.c
|
||||
+++ b/drivers/ssb/driver_extif.c
|
||||
@@ -112,11 +112,30 @@ void ssb_extif_get_clockcontrol(struct s
|
||||
*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
|
||||
}
|
||||
|
||||
-void ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
|
||||
+u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks)
|
||||
+{
|
||||
+ struct ssb_extif *extif = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+
|
||||
+ return ssb_extif_watchdog_timer_set(extif, ticks);
|
||||
+}
|
||||
+
|
||||
+u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms)
|
||||
+{
|
||||
+ struct ssb_extif *extif = bcm47xx_wdt_get_drvdata(wdt);
|
||||
+ u32 ticks = (SSB_EXTIF_WATCHDOG_CLK / 1000) * ms;
|
||||
+
|
||||
+ ticks = ssb_extif_watchdog_timer_set(extif, ticks);
|
||||
+
|
||||
+ return (ticks * 1000) / SSB_EXTIF_WATCHDOG_CLK;
|
||||
+}
|
||||
+
|
||||
+u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
|
||||
{
|
||||
if (ticks > SSB_EXTIF_WATCHDOG_MAX_TIMER)
|
||||
ticks = SSB_EXTIF_WATCHDOG_MAX_TIMER;
|
||||
extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks);
|
||||
+
|
||||
+ return ticks;
|
||||
}
|
||||
|
||||
u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
|
||||
--- a/drivers/ssb/ssb_private.h
|
||||
+++ b/drivers/ssb/ssb_private.h
|
||||
@@ -231,4 +231,19 @@ extern u32 ssb_chipco_watchdog_timer_set
|
||||
u32 ticks);
|
||||
extern u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
|
||||
|
||||
+#ifdef CONFIG_SSB_DRIVER_EXTIF
|
||||
+extern u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks);
|
||||
+extern u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
|
||||
+#else
|
||||
+static inline u32 ssb_extif_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
|
||||
+ u32 ticks)
|
||||
+{
|
||||
+ return 0;
|
||||
+}
|
||||
+static inline u32 ssb_extif_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt,
|
||||
+ u32 ms)
|
||||
+{
|
||||
+ return 0;
|
||||
+}
|
||||
+#endif
|
||||
#endif /* LINUX_SSB_PRIVATE_H_ */
|
||||
--- a/include/linux/ssb/ssb_driver_extif.h
|
||||
+++ b/include/linux/ssb/ssb_driver_extif.h
|
||||
@@ -153,6 +153,8 @@
|
||||
#define SSB_EXTIF_WATCHDOG_CLK 48000000 /* Hz */
|
||||
|
||||
#define SSB_EXTIF_WATCHDOG_MAX_TIMER ((1 << 28) - 1)
|
||||
+#define SSB_EXTIF_WATCHDOG_MAX_TIMER_MS (SSB_EXTIF_WATCHDOG_MAX_TIMER \
|
||||
+ / (SSB_EXTIF_WATCHDOG_CLK / 1000))
|
||||
|
||||
|
||||
#ifdef CONFIG_SSB_DRIVER_EXTIF
|
||||
@@ -172,8 +174,7 @@ extern void ssb_extif_get_clockcontrol(s
|
||||
extern void ssb_extif_timing_init(struct ssb_extif *extif,
|
||||
unsigned long ns);
|
||||
|
||||
-extern void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
|
||||
- u32 ticks);
|
||||
+extern u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks);
|
||||
|
||||
/* Extif GPIO pin access */
|
||||
u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask);
|
||||
@@ -206,9 +207,9 @@ void ssb_extif_get_clockcontrol(struct s
|
||||
}
|
||||
|
||||
static inline
|
||||
-void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
|
||||
- u32 ticks)
|
||||
+u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
|
||||
{
|
||||
+ return 0;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_SSB_DRIVER_EXTIF */
|
@ -0,0 +1,122 @@
|
||||
--- a/drivers/ssb/embedded.c
|
||||
+++ b/drivers/ssb/embedded.c
|
||||
@@ -4,11 +4,13 @@
|
||||
*
|
||||
* Copyright 2005-2008, Broadcom Corporation
|
||||
* Copyright 2006-2008, Michael Buesch <m@bues.ch>
|
||||
+ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
|
||||
*
|
||||
* Licensed under the GNU/GPL. See COPYING for details.
|
||||
*/
|
||||
|
||||
#include <linux/export.h>
|
||||
+#include <linux/platform_device.h>
|
||||
#include <linux/ssb/ssb.h>
|
||||
#include <linux/ssb/ssb_embedded.h>
|
||||
#include <linux/ssb/ssb_driver_pci.h>
|
||||
@@ -32,6 +34,39 @@ int ssb_watchdog_timer_set(struct ssb_bu
|
||||
}
|
||||
EXPORT_SYMBOL(ssb_watchdog_timer_set);
|
||||
|
||||
+int ssb_watchdog_register(struct ssb_bus *bus)
|
||||
+{
|
||||
+ struct bcm47xx_wdt wdt = {};
|
||||
+ struct platform_device *pdev;
|
||||
+
|
||||
+ if (ssb_chipco_available(&bus->chipco)) {
|
||||
+ wdt.driver_data = &bus->chipco;
|
||||
+ wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
|
||||
+ wdt.timer_set_ms = ssb_chipco_watchdog_timer_set_ms;
|
||||
+ wdt.max_timer_ms = bus->chipco.max_timer_ms;
|
||||
+ } else if (ssb_extif_available(&bus->extif)) {
|
||||
+ wdt.driver_data = &bus->extif;
|
||||
+ wdt.timer_set = ssb_extif_watchdog_timer_set_wdt;
|
||||
+ wdt.timer_set_ms = ssb_extif_watchdog_timer_set_ms;
|
||||
+ wdt.max_timer_ms = SSB_EXTIF_WATCHDOG_MAX_TIMER_MS;
|
||||
+ } else {
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
+ pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
|
||||
+ bus->busnumber, &wdt,
|
||||
+ sizeof(wdt));
|
||||
+ if (IS_ERR(pdev)) {
|
||||
+ ssb_dprintk(KERN_INFO PFX
|
||||
+ "can not register watchdog device, err: %li\n",
|
||||
+ PTR_ERR(pdev));
|
||||
+ return PTR_ERR(pdev);
|
||||
+ }
|
||||
+
|
||||
+ bus->watchdog = pdev;
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
|
||||
{
|
||||
unsigned long flags;
|
||||
--- a/drivers/ssb/main.c
|
||||
+++ b/drivers/ssb/main.c
|
||||
@@ -13,6 +13,7 @@
|
||||
#include <linux/delay.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/module.h>
|
||||
+#include <linux/platform_device.h>
|
||||
#include <linux/ssb/ssb.h>
|
||||
#include <linux/ssb/ssb_regs.h>
|
||||
#include <linux/ssb/ssb_driver_gige.h>
|
||||
@@ -434,6 +435,11 @@ static void ssb_devices_unregister(struc
|
||||
if (sdev->dev)
|
||||
device_unregister(sdev->dev);
|
||||
}
|
||||
+
|
||||
+#ifdef CONFIG_SSB_EMBEDDED
|
||||
+ if (bus->bustype == SSB_BUSTYPE_SSB)
|
||||
+ platform_device_unregister(bus->watchdog);
|
||||
+#endif
|
||||
}
|
||||
|
||||
void ssb_bus_unregister(struct ssb_bus *bus)
|
||||
@@ -579,6 +585,8 @@ static int __devinit ssb_attach_queued_b
|
||||
if (err)
|
||||
goto error;
|
||||
ssb_pcicore_init(&bus->pcicore);
|
||||
+ if (bus->bustype == SSB_BUSTYPE_SSB)
|
||||
+ ssb_watchdog_register(bus);
|
||||
ssb_bus_may_powerdown(bus);
|
||||
|
||||
err = ssb_devices_register(bus);
|
||||
--- a/drivers/ssb/ssb_private.h
|
||||
+++ b/drivers/ssb/ssb_private.h
|
||||
@@ -246,4 +246,14 @@ static inline u32 ssb_extif_watchdog_tim
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
+
|
||||
+#ifdef CONFIG_SSB_EMBEDDED
|
||||
+extern int ssb_watchdog_register(struct ssb_bus *bus);
|
||||
+#else /* CONFIG_SSB_EMBEDDED */
|
||||
+static inline int ssb_watchdog_register(struct ssb_bus *bus)
|
||||
+{
|
||||
+ return 0;
|
||||
+}
|
||||
+#endif /* CONFIG_SSB_EMBEDDED */
|
||||
+
|
||||
#endif /* LINUX_SSB_PRIVATE_H_ */
|
||||
--- a/include/linux/ssb/ssb.h
|
||||
+++ b/include/linux/ssb/ssb.h
|
||||
@@ -8,6 +8,7 @@
|
||||
#include <linux/pci.h>
|
||||
#include <linux/mod_devicetable.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
+#include <linux/platform_device.h>
|
||||
|
||||
#include <linux/ssb/ssb_regs.h>
|
||||
|
||||
@@ -432,6 +433,7 @@ struct ssb_bus {
|
||||
#ifdef CONFIG_SSB_EMBEDDED
|
||||
/* Lock for GPIO register access. */
|
||||
spinlock_t gpio_lock;
|
||||
+ struct platform_device *watchdog;
|
||||
#endif /* EMBEDDED */
|
||||
|
||||
/* Internal-only stuff follows. Do not touch. */
|
@ -1,103 +0,0 @@
|
||||
--- a/drivers/watchdog/bcm47xx_wdt.c
|
||||
+++ b/drivers/watchdog/bcm47xx_wdt.c
|
||||
@@ -33,6 +33,7 @@
|
||||
|
||||
#define WDT_DEFAULT_TIME 30 /* seconds */
|
||||
#define WDT_MAX_TIME 255 /* seconds */
|
||||
+#define WDT_SHIFT 15 /* 32.768 KHz on cores with slow WDT clock */
|
||||
|
||||
static int wdt_time = WDT_DEFAULT_TIME;
|
||||
static bool nowayout = WATCHDOG_NOWAYOUT;
|
||||
@@ -52,20 +53,20 @@ static unsigned long bcm47xx_wdt_busy;
|
||||
static char expect_release;
|
||||
static struct timer_list wdt_timer;
|
||||
static atomic_t ticks;
|
||||
+static int needs_sw_scale;
|
||||
|
||||
-static inline void bcm47xx_wdt_hw_start(void)
|
||||
+static inline void bcm47xx_wdt_hw_start(u32 ticks)
|
||||
{
|
||||
- /* this is 2,5s on 100Mhz clock and 2s on 133 Mhz */
|
||||
switch (bcm47xx_bus_type) {
|
||||
#ifdef CONFIG_BCM47XX_SSB
|
||||
case BCM47XX_BUS_TYPE_SSB:
|
||||
- ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0xfffffff);
|
||||
+ ssb_watchdog_timer_set(&bcm47xx_bus.ssb, ticks);
|
||||
break;
|
||||
#endif
|
||||
#ifdef CONFIG_BCM47XX_BCMA
|
||||
case BCM47XX_BUS_TYPE_BCMA:
|
||||
bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc,
|
||||
- 0xfffffff);
|
||||
+ ticks);
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
@@ -90,33 +91,34 @@ static inline int bcm47xx_wdt_hw_stop(vo
|
||||
static void bcm47xx_timer_tick(unsigned long unused)
|
||||
{
|
||||
if (!atomic_dec_and_test(&ticks)) {
|
||||
- bcm47xx_wdt_hw_start();
|
||||
+ /* This is 2,5s on 100Mhz clock and 2s on 133 Mhz */
|
||||
+ bcm47xx_wdt_hw_start(0xfffffff);
|
||||
mod_timer(&wdt_timer, jiffies + HZ);
|
||||
} else {
|
||||
pr_crit("Watchdog will fire soon!!!\n");
|
||||
}
|
||||
}
|
||||
|
||||
-static inline void bcm47xx_wdt_pet(void)
|
||||
+static void bcm47xx_wdt_pet(void)
|
||||
{
|
||||
- atomic_set(&ticks, wdt_time);
|
||||
+ if(needs_sw_scale)
|
||||
+ atomic_set(&ticks, wdt_time);
|
||||
+ else
|
||||
+ bcm47xx_wdt_hw_start(wdt_time << WDT_SHIFT);
|
||||
}
|
||||
|
||||
static void bcm47xx_wdt_start(void)
|
||||
{
|
||||
bcm47xx_wdt_pet();
|
||||
- bcm47xx_timer_tick(0);
|
||||
-}
|
||||
-
|
||||
-static void bcm47xx_wdt_pause(void)
|
||||
-{
|
||||
- del_timer_sync(&wdt_timer);
|
||||
- bcm47xx_wdt_hw_stop();
|
||||
+ if(needs_sw_scale)
|
||||
+ bcm47xx_timer_tick(0);
|
||||
}
|
||||
|
||||
static void bcm47xx_wdt_stop(void)
|
||||
{
|
||||
- bcm47xx_wdt_pause();
|
||||
+ if(needs_sw_scale)
|
||||
+ del_timer_sync(&wdt_timer);
|
||||
+ bcm47xx_wdt_hw_stop();
|
||||
}
|
||||
|
||||
static int bcm47xx_wdt_settimeout(int new_time)
|
||||
@@ -267,7 +269,20 @@ static int __init bcm47xx_wdt_init(void)
|
||||
if (bcm47xx_wdt_hw_stop() < 0)
|
||||
return -ENODEV;
|
||||
|
||||
- setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L);
|
||||
+ /* FIXME Other cores */
|
||||
+#ifdef BCM47XX_BUS_TYPE_BCMA
|
||||
+ if(bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA &&
|
||||
+ bcm47xx_bus.ssb.chip_id == 0x5354) {
|
||||
+ /* Slow WDT clock, no pre-scaling */
|
||||
+ needs_sw_scale = 0;
|
||||
+ } else {
|
||||
+#endif
|
||||
+ /* Fast WDT clock, needs software pre-scaling */
|
||||
+ needs_sw_scale = 1;
|
||||
+ setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L);
|
||||
+#ifdef BCM47XX_BUS_TYPE_BCMA
|
||||
+ }
|
||||
+#endif
|
||||
|
||||
if (bcm47xx_wdt_settimeout(wdt_time)) {
|
||||
bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME);
|
Loading…
Reference in New Issue
Block a user