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Commit 90139106 authored by Benjamin Chan's avatar Benjamin Chan
Browse files

drm/msm/sde: provide sde power notification support 



Generates sde power on/off custom notification events to usermode.
Usermode driver needs to register for the new custom event
DRM_EVENT_SDE_POWER in order to receive the notification.

Change-Id: Id26862d2fb4ecb77c4906a0426dea6950ae6a955
Signed-off-by: default avatarBenjamin Chan <bkchan@codeaurora.org>
parent 4d9a308b

drivers/gpu/drm/msm/sde/sde_crtc.c

+28 −1
Original line number Diff line number Diff line
@@ -55,9 +55,13 @@ struct sde_crtc_custom_events { 
static int sde_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm,

	bool en, struct sde_irq_callback *ad_irq);



static int sde_crtc_pm_event_handler(struct drm_crtc *crtc_drm,

	bool en, struct sde_irq_callback *noirq);



static struct sde_crtc_custom_events custom_events[] = {

	{DRM_EVENT_AD_BACKLIGHT, sde_cp_ad_interrupt},

	{DRM_EVENT_CRTC_POWER, sde_crtc_power_interrupt_handler}

	{DRM_EVENT_CRTC_POWER, sde_crtc_power_interrupt_handler},

	{DRM_EVENT_SDE_POWER, sde_crtc_pm_event_handler},

};



/* default input fence timeout, in ms */
@@ -2429,6 +2433,8 @@ static void sde_crtc_handle_power_event(u32 event_type, void *arg) 
	struct drm_crtc *crtc = arg;

	struct sde_crtc *sde_crtc;

	struct drm_encoder *encoder;

	struct drm_event event;

	u32 power_on = 0;



	if (!crtc) {

		SDE_ERROR("invalid crtc\n");
@@ -2449,6 +2455,11 @@ static void sde_crtc_handle_power_event(u32 event_type, void *arg) 
			sde_encoder_virt_restore(encoder);

		}



		event.type = DRM_EVENT_SDE_POWER;

		event.length = sizeof(power_on);

		power_on = 1;

		msm_mode_object_event_notify(&crtc->base, crtc->dev, &event,

				(u8 *)&power_on);

	} else if (event_type == SDE_POWER_EVENT_POST_DISABLE) {

		struct drm_plane *plane;
@@ -2460,6 +2471,12 @@ static void sde_crtc_handle_power_event(u32 event_type, void *arg) 
			sde_plane_set_revalidate(plane, true);



		sde_cp_crtc_suspend(crtc);



		event.type = DRM_EVENT_SDE_POWER;

		event.length = sizeof(power_on);

		power_on = 0;

		msm_mode_object_event_notify(&crtc->base, crtc->dev, &event,

				(u8 *)&power_on);

	}



	mutex_unlock(&sde_crtc->crtc_lock);
@@ -3975,3 +3992,13 @@ static int sde_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm, 
{

	return 0;

}



static int sde_crtc_pm_event_handler(struct drm_crtc *crtc, bool en,

		struct sde_irq_callback *noirq)

{

	/*

	 * IRQ object noirq is not being used here since there is

	 * no crtc irq from pm event.

	 */

	return 0;

}

include/uapi/drm/msm_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -322,6 +322,7 @@ struct drm_msm_event_resp { 
#define DRM_EVENT_AD_BACKLIGHT 0x80000001

#define DRM_EVENT_CRTC_POWER 0x80000002

#define DRM_EVENT_SYS_BACKLIGHT 0x80000003

#define DRM_EVENT_SDE_POWER 0x80000004



#define DRM_IOCTL_MSM_GET_PARAM        DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param)

#define DRM_IOCTL_MSM_GEM_NEW          DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GEM_NEW, struct drm_msm_gem_new)