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authorInki Dae <inki.dae@samsung.com>2011-12-12 16:35:20 +0900
committerInki Dae <inki.dae@samsung.com>2011-12-29 11:21:41 +0900
commite30d4bcf79b6a3e09e435a5f3027ad3ef484226c (patch)
tree22900e1b9c9d25e74e5848f95ffe2921f3ea8d92 /drivers/gpu
parente1533c086fc882474fb339953082072bec8c4e71 (diff)
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>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_fimd.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index fe4172e48ad2..95c621018443 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -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)
};