ARM: OMAP: Remove loses_context variable from timer platform data
The platform data variable loses_context is used to determine if the timer may
lose its logic state during power transitions and so needs to be restored. This
information is also provided in the HWMOD device attributes for OMAP2+ devices
via the OMAP_TIMER_ALWON flag. When this flag is set the timer will not lose
context. So use the HWMOD device attributes to determine this.
For OMAP1 devices, loses_context is never set and so set the OMAP_TIMER_ALWON
flag for OMAP1 timers to ensure that code is equivalent.
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap1/timer.c b/arch/arm/mach-omap1/timer.c
index 64c65bc..b4bf48c 100644
--- a/arch/arm/mach-omap1/timer.c
+++ b/arch/arm/mach-omap1/timer.c
@@ -141,6 +141,7 @@
pdata->set_timer_src = omap1_dm_timer_set_src;
pdata->needs_manual_reset = 1;
+ pdata->timer_capability = OMAP_TIMER_ALWON;
ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
if (ret) {
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 8c046d9..9b6880a 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -462,7 +462,6 @@
struct dmtimer_platform_data *pdata;
struct platform_device *pdev;
struct omap_timer_capability_dev_attr *timer_dev_attr;
- struct powerdomain *pwrdm;
pr_debug("%s: %s\n", __func__, oh->name);
@@ -495,8 +494,6 @@
if (timer_dev_attr)
pdata->timer_capability = timer_dev_attr->timer_capability;
- pwrdm = omap_hwmod_get_pwrdm(oh);
- pdata->loses_context = pwrdm_can_ever_lose_context(pwrdm);
#ifdef CONFIG_PM
pdata->get_context_loss_count = omap_pm_get_dev_context_loss_count;
#endif
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 30742d8e6..7aa1278 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -341,7 +341,7 @@
omap_dm_timer_enable(timer);
- if (timer->loses_context) {
+ if (!(timer->capability & OMAP_TIMER_ALWON)) {
u32 ctx_loss_cnt_after =
timer->get_context_loss_count(&timer->pdev->dev);
if (ctx_loss_cnt_after != timer->ctx_loss_count)
@@ -374,7 +374,8 @@
__omap_dm_timer_stop(timer, timer->posted, rate);
- if (timer->loses_context && timer->get_context_loss_count)
+ if (!(timer->capability & OMAP_TIMER_ALWON) &&
+ timer->get_context_loss_count)
timer->ctx_loss_count =
timer->get_context_loss_count(&timer->pdev->dev);
@@ -447,7 +448,7 @@
omap_dm_timer_enable(timer);
- if (timer->loses_context) {
+ if (!(timer->capability & OMAP_TIMER_ALWON)) {
u32 ctx_loss_cnt_after =
timer->get_context_loss_count(&timer->pdev->dev);
if (ctx_loss_cnt_after != timer->ctx_loss_count)
@@ -692,7 +693,6 @@
timer->irq = irq->start;
timer->reserved = omap_dm_timer_reserved_systimer(timer->id);
timer->pdev = pdev;
- timer->loses_context = pdata->loses_context;
timer->get_context_loss_count = pdata->get_context_loss_count;
timer->capability = pdata->timer_capability;
diff --git a/arch/arm/plat-omap/include/plat/dmtimer.h b/arch/arm/plat-omap/include/plat/dmtimer.h
index 362cf97..0a7ed31 100644
--- a/arch/arm/plat-omap/include/plat/dmtimer.h
+++ b/arch/arm/plat-omap/include/plat/dmtimer.h
@@ -91,8 +91,6 @@
struct dmtimer_platform_data {
int (*set_timer_src)(struct platform_device *pdev, int source);
u32 needs_manual_reset:1;
- bool loses_context;
-
int (*get_context_loss_count)(struct device *dev);
u32 timer_capability;
};
@@ -264,7 +262,6 @@
unsigned reserved:1;
unsigned posted:1;
struct timer_regs context;
- bool loses_context;
int ctx_loss_count;
int revision;
u32 capability;