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Commit 64327cb3 authored by Rahul Sharma's avatar Rahul Sharma Committed by Inki Dae
Browse files

drm/exynos: added runtime pm support for hdmi 



This patch adds runtime power management support for exynos drm
hdmi driver.

Signed-off-by: default avatarRahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: default avatarShirish S <s.shirish@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent 1169af21

drivers/gpu/drm/exynos/exynos_hdmi.c

+52 −8
Original line number Diff line number Diff line
@@ -2171,8 +2171,6 @@ static void hdmi_poweron(struct hdmi_context *hdata) 


	mutex_unlock(&hdata->hdmi_mutex);



	pm_runtime_get_sync(hdata->dev);



	regulator_bulk_enable(res->regul_count, res->regul_bulk);

	clk_enable(res->hdmiphy);

	clk_enable(res->hdmi);
@@ -2201,8 +2199,6 @@ static void hdmi_poweroff(struct hdmi_context *hdata) 
	clk_disable(res->hdmiphy);

	regulator_bulk_disable(res->regul_count, res->regul_bulk);



	pm_runtime_put_sync(hdata->dev);



	mutex_lock(&hdata->hdmi_mutex);



	hdata->powered = false;
@@ -2215,16 +2211,18 @@ static void hdmi_dpms(void *ctx, int mode) 
{

	struct hdmi_context *hdata = ctx;



	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);

	DRM_DEBUG_KMS("[%d] %s mode %d\n", __LINE__, __func__, mode);



	switch (mode) {

	case DRM_MODE_DPMS_ON:

		hdmi_poweron(hdata);

		if (pm_runtime_suspended(hdata->dev))

			pm_runtime_get_sync(hdata->dev);

		break;

	case DRM_MODE_DPMS_STANDBY:

	case DRM_MODE_DPMS_SUSPEND:

	case DRM_MODE_DPMS_OFF:

		hdmi_poweroff(hdata);

		if (!pm_runtime_suspended(hdata->dev))

			pm_runtime_put_sync(hdata->dev);

		break;

	default:

		DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
@@ -2612,6 +2610,8 @@ static int hdmi_suspend(struct device *dev) 
	struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);

	struct hdmi_context *hdata = ctx->ctx;



	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);



	disable_irq(hdata->internal_irq);

	disable_irq(hdata->external_irq);
@@ -2619,6 +2619,11 @@ static int hdmi_suspend(struct device *dev) 
	if (ctx->drm_dev)

		drm_helper_hpd_irq_event(ctx->drm_dev);



	if (pm_runtime_suspended(dev)) {

		DRM_DEBUG_KMS("%s : Already suspended\n", __func__);

		return 0;

	}



	hdmi_poweroff(hdata);



	return 0;
@@ -2629,13 +2634,52 @@ static int hdmi_resume(struct device *dev) 
	struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);

	struct hdmi_context *hdata = ctx->ctx;



	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);



	hdata->hpd = gpio_get_value(hdata->hpd_gpio);



	enable_irq(hdata->external_irq);

	enable_irq(hdata->internal_irq);



	if (!pm_runtime_suspended(dev)) {

		DRM_DEBUG_KMS("%s : Already resumed\n", __func__);

		return 0;

	}



	hdmi_poweron(hdata);



	return 0;

}

#endif



static SIMPLE_DEV_PM_OPS(hdmi_pm_ops, hdmi_suspend, hdmi_resume);

#ifdef CONFIG_PM_RUNTIME

static int hdmi_runtime_suspend(struct device *dev)

{

	struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);

	struct hdmi_context *hdata = ctx->ctx;

	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);



	hdmi_poweroff(hdata);



	return 0;

}



static int hdmi_runtime_resume(struct device *dev)

{

	struct exynos_drm_hdmi_context *ctx = get_hdmi_context(dev);

	struct hdmi_context *hdata = ctx->ctx;

	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);



	hdmi_poweron(hdata);



	return 0;

}

#endif



static const struct dev_pm_ops hdmi_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(hdmi_suspend, hdmi_resume)

	SET_RUNTIME_PM_OPS(hdmi_runtime_suspend, hdmi_runtime_resume, NULL)

};



struct platform_driver hdmi_driver = {

	.probe		= hdmi_probe,