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>
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@ -872,8 +872,6 @@ static void mixer_poweron(struct mixer_context *ctx)
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ctx->powered = true;
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mutex_unlock(&ctx->mixer_mutex);
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pm_runtime_get_sync(ctx->dev);
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clk_enable(res->mixer);
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if (ctx->vp_enabled) {
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clk_enable(res->vp);
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@ -907,8 +905,6 @@ static void mixer_poweroff(struct mixer_context *ctx)
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clk_disable(res->sclk_mixer);
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}
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pm_runtime_put_sync(ctx->dev);
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mutex_lock(&ctx->mixer_mutex);
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ctx->powered = false;
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@ -924,12 +920,14 @@ static void mixer_dpms(void *ctx, int mode)
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switch (mode) {
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case DRM_MODE_DPMS_ON:
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mixer_poweron(mixer_ctx);
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if (pm_runtime_suspended(mixer_ctx->dev))
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pm_runtime_get_sync(mixer_ctx->dev);
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break;
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case DRM_MODE_DPMS_STANDBY:
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case DRM_MODE_DPMS_SUSPEND:
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case DRM_MODE_DPMS_OFF:
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mixer_poweroff(mixer_ctx);
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if (!pm_runtime_suspended(mixer_ctx->dev))
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pm_runtime_put_sync(mixer_ctx->dev);
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break;
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default:
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DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
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@ -1249,13 +1247,66 @@ static int mixer_suspend(struct device *dev)
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struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
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struct mixer_context *ctx = drm_hdmi_ctx->ctx;
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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if (pm_runtime_suspended(dev)) {
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DRM_DEBUG_KMS("%s : Already suspended\n", __func__);
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return 0;
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}
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mixer_poweroff(ctx);
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return 0;
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}
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static int mixer_resume(struct device *dev)
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{
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struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
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struct mixer_context *ctx = drm_hdmi_ctx->ctx;
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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if (!pm_runtime_suspended(dev)) {
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DRM_DEBUG_KMS("%s : Already resumed\n", __func__);
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return 0;
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}
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mixer_poweron(ctx);
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return 0;
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}
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#endif
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static SIMPLE_DEV_PM_OPS(mixer_pm_ops, mixer_suspend, NULL);
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#ifdef CONFIG_PM_RUNTIME
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static int mixer_runtime_suspend(struct device *dev)
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{
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struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
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struct mixer_context *ctx = drm_hdmi_ctx->ctx;
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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mixer_poweroff(ctx);
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return 0;
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}
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static int mixer_runtime_resume(struct device *dev)
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{
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struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
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struct mixer_context *ctx = drm_hdmi_ctx->ctx;
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DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
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mixer_poweron(ctx);
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return 0;
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}
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#endif
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static const struct dev_pm_ops mixer_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(mixer_suspend, mixer_resume)
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SET_RUNTIME_PM_OPS(mixer_runtime_suspend, mixer_runtime_resume, NULL)
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};
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struct platform_driver mixer_driver = {
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.driver = {
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