OMAP2+: wd_timer: separate watchdog disable code from the rest of mach-omap2/devices.c
Split the wd_timer disable code out into its own file,
mach-omap2/wd_timer.c; it belongs in its own file rather than
cluttering up devices.c.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Charulatha Varadarajan <charu@ti.com>
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 1bca147..9221a48 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -33,6 +33,7 @@
#include "mux.h"
#include "control.h"
+#include "wd_timer.h"
#if defined(CONFIG_VIDEO_OMAP2) || defined(CONFIG_VIDEO_OMAP2_MODULE)
@@ -955,69 +956,23 @@
/*-------------------------------------------------------------------------*/
-/*
- * Inorder to avoid any assumptions from bootloader regarding WDT
- * settings, WDT module is reset during init. This enables the watchdog
- * timer. Hence it is required to disable the watchdog after the WDT reset
- * during init. Otherwise the system would reboot as per the default
- * watchdog timer registers settings.
- */
-#define OMAP_WDT_WPS (0x34)
-#define OMAP_WDT_SPR (0x48)
-
static int omap2_disable_wdt(struct omap_hwmod *oh, void *unused)
{
- void __iomem *base;
- int ret;
-
- if (!oh) {
- pr_err("%s: Could not look up wdtimer_hwmod\n", __func__);
- return -EINVAL;
- }
-
- base = omap_hwmod_get_mpu_rt_va(oh);
- if (!base) {
- pr_err("%s: Could not get the base address for %s\n",
- oh->name, __func__);
- return -EINVAL;
- }
-
- /* Enable the clocks before accessing the WDT registers */
- ret = omap_hwmod_enable(oh);
- if (ret) {
- pr_err("%s: Could not enable clocks for %s\n",
- oh->name, __func__);
- return ret;
- }
-
- /* sequence required to disable watchdog */
- __raw_writel(0xAAAA, base + OMAP_WDT_SPR);
- while (__raw_readl(base + OMAP_WDT_WPS) & 0x10)
- cpu_relax();
-
- __raw_writel(0x5555, base + OMAP_WDT_SPR);
- while (__raw_readl(base + OMAP_WDT_WPS) & 0x10)
- cpu_relax();
-
- ret = omap_hwmod_idle(oh);
- if (ret)
- pr_err("%s: Could not disable clocks for %s\n",
- oh->name, __func__);
-
- return ret;
+ return omap2_wd_timer_disable(oh);
}
static void __init omap_disable_wdt(void)
{
if (cpu_class_is_omap2())
omap_hwmod_for_each_by_class("wd_timer",
- omap2_disable_wdt, NULL);
+ omap2_disable_wdt, NULL);
return;
}
static int __init omap2_init_devices(void)
{
- /* please keep these calls, and their implementations above,
+ /*
+ * please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
omap_disable_wdt();