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drm/exynos: added pm support. 

this patch adds pm feature for fimd driver.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Inki Dae 2011-12-12 16:35:20 +09:00
parent e1533c086f
commit e30d4bcf79
1 changed files with 59 additions and 0 deletions
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59
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -181,6 +181,9 @@ static void fimd_commit(struct device *dev)
struct fb_videomode *timing = ctx->timing;
u32 val;
if (ctx->suspended)
return;
DRM_DEBUG_KMS("%s\n", __FILE__);
/* setup polarity values from machine code. */
@ -414,6 +417,9 @@ static void fimd_win_commit(struct device *dev, int zpos)
DRM_DEBUG_KMS("%s\n", __FILE__);
if (ctx->suspended)
return;
if (win == DEFAULT_ZPOS)
win = ctx->default_win;
@ -885,6 +891,51 @@ out:
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int fimd_suspend(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
int ret;
if (pm_runtime_suspended(dev))
return 0;
ret = pm_runtime_suspend(dev);
if (ret < 0)
return ret;
ctx->suspended = true;
return 0;
}
static int fimd_resume(struct device *dev)
{
struct fimd_context *ctx = get_fimd_context(dev);
int ret;
ret = pm_runtime_resume(dev);
if (ret < 0) {
DRM_ERROR("failed to resume runtime pm.\n");
return ret;
}
pm_runtime_disable(dev);
ret = pm_runtime_set_active(dev);
if (ret < 0) {
DRM_ERROR("failed to active runtime pm.\n");
pm_runtime_enable(dev);
pm_runtime_suspend(dev);
return ret;
}
pm_runtime_enable(dev);
ctx->suspended = false;
return 0;
}
#endif
#ifdef CONFIG_PM_RUNTIME
static int fimd_runtime_suspend(struct device *dev)
{
@ -917,11 +968,19 @@ static int fimd_runtime_resume(struct device *dev)
}
ctx->suspended = false;
/* if vblank was enabled status, enable it again. */
if (test_and_clear_bit(0, &ctx->irq_flags))
fimd_enable_vblank(dev);
fimd_apply(dev);
return 0;
}
#endif
static const struct dev_pm_ops fimd_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(fimd_suspend, fimd_resume)
SET_RUNTIME_PM_OPS(fimd_runtime_suspend, fimd_runtime_resume, NULL)
};