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| author | Rahul Sharma <rahul.sharma@samsung.com> | 2012-11-28 11:30:24 +0530 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2012-12-14 15:40:48 +0900 |
| commit | 000f13083d38681eaa3038c65d499f6ad5d62625 (patch) | |
| tree | 9acc0ed6d32e0161a6ab809f0dce3ceac1bea73f | |
| parent | 64327cb35acea0e3046d7c08d90b84ab83d5e7d1 (diff) | |
drm/exynos: add runtime pm support for mixer
This patch adds support for runtime power management for
drm mixer driver.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Shirish S <s.shirish@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_mixer.c | 65 |
1 files changed, 58 insertions, 7 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 632a941520f..21db89530fc 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -872,8 +872,6 @@ static void mixer_poweron(struct mixer_context *ctx) ctx->powered = true; mutex_unlock(&ctx->mixer_mutex); - pm_runtime_get_sync(ctx->dev); - clk_enable(res->mixer); if (ctx->vp_enabled) { clk_enable(res->vp); @@ -907,8 +905,6 @@ static void mixer_poweroff(struct mixer_context *ctx) clk_disable(res->sclk_mixer); } - pm_runtime_put_sync(ctx->dev); - mutex_lock(&ctx->mixer_mutex); ctx->powered = false; @@ -924,12 +920,14 @@ static void mixer_dpms(void *ctx, int mode) switch (mode) { case DRM_MODE_DPMS_ON: - mixer_poweron(mixer_ctx); + if (pm_runtime_suspended(mixer_ctx->dev)) + pm_runtime_get_sync(mixer_ctx->dev); break; case DRM_MODE_DPMS_STANDBY: case DRM_MODE_DPMS_SUSPEND: case DRM_MODE_DPMS_OFF: - mixer_poweroff(mixer_ctx); + if (!pm_runtime_suspended(mixer_ctx->dev)) + pm_runtime_put_sync(mixer_ctx->dev); break; default: DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode); @@ -1249,13 +1247,66 @@ static int mixer_suspend(struct device *dev) struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev); struct mixer_context *ctx = drm_hdmi_ctx->ctx; + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + if (pm_runtime_suspended(dev)) { + DRM_DEBUG_KMS("%s : Already suspended\n", __func__); + return 0; + } + mixer_poweroff(ctx); return 0; } + +static int mixer_resume(struct device *dev) +{ + struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev); + struct mixer_context *ctx = drm_hdmi_ctx->ctx; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + if (!pm_runtime_suspended(dev)) { + DRM_DEBUG_KMS("%s : Already resumed\n", __func__); + return 0; + } + + mixer_poweron(ctx); + + return 0; +} #endif -static SIMPLE_DEV_PM_OPS(mixer_pm_ops, mixer_suspend, NULL); +#ifdef CONFIG_PM_RUNTIME +static int mixer_runtime_suspend(struct device *dev) +{ + struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev); + struct mixer_context *ctx = drm_hdmi_ctx->ctx; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + mixer_poweroff(ctx); + + return 0; +} + +static int mixer_runtime_resume(struct device *dev) +{ + struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev); + struct mixer_context *ctx = drm_hdmi_ctx->ctx; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + mixer_poweron(ctx); + + return 0; +} +#endif + +static const struct dev_pm_ops mixer_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mixer_suspend, mixer_resume) + SET_RUNTIME_PM_OPS(mixer_runtime_suspend, mixer_runtime_resume, NULL) +}; struct platform_driver mixer_driver = { .driver = { |