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Commit 84b4f670 authored by Gopikrishnaiah Anandan's avatar Gopikrishnaiah Anandan
Browse files

drm: msm: Add support AD4 custom event notifications 



SDM845 target supports AD4 feature. User-space client of AD4 driver
needs to be notified of system back-light notifications, suspend/resume
events. Change adds support in sde display driver for notify the events.

Change-Id: Ia2fbae75cc66389145292082c46d3bd16653e941
Signed-off-by: default avatarGopikrishnaiah Anandan <agopik@codeaurora.org>
parent f41c2eff

drivers/gpu/drm/msm/msm_drv.c

+6 −8
Original line number Diff line number Diff line
@@ -1271,22 +1271,20 @@ static int msm_ioctl_deregister_event(struct drm_device *dev, void *data, 
	return ret;

}



void msm_send_crtc_notification(struct drm_crtc *crtc,

				struct drm_event *event, u8 *payload)

void msm_mode_object_event_nofity(struct drm_mode_object *obj,

		struct drm_device *dev, struct drm_event *event, u8 *payload)

{

	struct drm_device *dev = NULL;

	struct msm_drm_private *priv = NULL;

	unsigned long flags;

	struct msm_drm_event *notify, *node;

	int len = 0, ret;



	if (!crtc || !event || !event->length || !payload) {

		DRM_ERROR("err param crtc %pK event %pK len %d payload %pK\n",

			crtc, event, ((event) ? (event->length) : -1),

	if (!obj || !event || !event->length || !payload) {

		DRM_ERROR("err param obj %pK event %pK len %d payload %pK\n",

			obj, event, ((event) ? (event->length) : -1),

			payload);

		return;

	}

	dev = crtc->dev;

	priv = (dev) ? dev->dev_private : NULL;

	if (!dev || !priv) {

		DRM_ERROR("invalid dev %pK priv %pK\n", dev, priv);
@@ -1296,7 +1294,7 @@ void msm_send_crtc_notification(struct drm_crtc *crtc, 
	spin_lock_irqsave(&dev->event_lock, flags);

	list_for_each_entry(node, &priv->client_event_list, base.link) {

		if (node->event.type != event->type ||

			crtc->base.id != node->info.object_id)

			obj->id != node->info.object_id)

			continue;

		len = event->length + sizeof(struct drm_msm_event_resp);

		if (node->base.file_priv->event_space < len) {

drivers/gpu/drm/msm/msm_drv.h

+5 −4
Original line number Diff line number Diff line
@@ -707,13 +707,14 @@ enum msm_dsi_encoder_id { 
};



/* *

 * msm_send_crtc_notification - notify user-space clients of crtc events.

 * @crtc: crtc that is generating the event.

 * msm_mode_object_event_notify - notify user-space clients of drm object

 *                                events.

 * @obj: mode object (crtc/connector) that is generating the event.

 * @event: event that needs to be notified.

 * @payload: payload for the event.

 */

void msm_send_crtc_notification(struct drm_crtc *crtc,

		struct drm_event *event, u8 *payload);

void msm_mode_object_event_nofity(struct drm_mode_object *obj,

		struct drm_device *dev, struct drm_event *event, u8 *payload);

#ifdef CONFIG_DRM_MSM_DSI

void __init msm_dsi_register(void);

void __exit msm_dsi_unregister(void);

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

+2 −1
Original line number Diff line number Diff line
@@ -1357,7 +1357,8 @@ static void sde_cp_notify_ad_event(struct drm_crtc *crtc_drm, void *arg) 
	hw_dspp->ops.ad_read_intr_resp(hw_dspp, AD4_BACKLIGHT, &bl);

	event.length = sizeof(u32);

	event.type = DRM_EVENT_AD_BACKLIGHT;

	msm_send_crtc_notification(&crtc->base, &event, (u8 *)&bl);

	msm_mode_object_event_nofity(&crtc_drm->base, crtc_drm->dev,

			&event, (u8 *)&bl);

}



int sde_cp_ad_interrupt(struct drm_crtc *crtc_drm, bool en,

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

+17 −2
Original line number Diff line number Diff line
@@ -57,6 +57,7 @@ static int sde_backlight_device_update_status(struct backlight_device *bd) 
	struct dsi_display *display;

	struct sde_connector *c_conn;

	int bl_lvl;

	struct drm_event event;



	brightness = bd->props.brightness;
@@ -77,8 +78,13 @@ static int sde_backlight_device_update_status(struct backlight_device *bd) 
	if (!bl_lvl && brightness)

		bl_lvl = 1;



	if (c_conn->ops.set_backlight)

	if (c_conn->ops.set_backlight) {

		event.type = DRM_EVENT_SYS_BACKLIGHT;

		event.length = sizeof(u32);

		msm_mode_object_event_nofity(&c_conn->base.base,

				c_conn->base.dev, &event, (u8 *)&brightness);

		c_conn->ops.set_backlight(c_conn->display, bl_lvl);

	}



	return 0;

}
@@ -1168,5 +1174,14 @@ struct drm_connector *sde_connector_init(struct drm_device *dev, 
int sde_connector_register_custom_event(struct sde_kms *kms,

		struct drm_connector *conn_drm, u32 event, bool val)

{

	return -EINVAL;

	int ret = -EINVAL;



	switch (event) {

	case DRM_EVENT_SYS_BACKLIGHT:

		ret = 0;

		break;

	default:

		break;

	}

	return ret;

}

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

+22 −4
Original line number Diff line number Diff line
@@ -51,8 +51,12 @@ struct sde_crtc_custom_events { 
			struct sde_irq_callback *irq);

};



static int sde_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm,

	bool en, struct sde_irq_callback *ad_irq);



static struct sde_crtc_custom_events custom_events[] = {

	{DRM_EVENT_AD_BACKLIGHT, sde_cp_ad_interrupt}

	{DRM_EVENT_AD_BACKLIGHT, sde_cp_ad_interrupt},

	{DRM_EVENT_CRTC_POWER, sde_crtc_power_interrupt_handler}

};



/* default input fence timeout, in ms */
@@ -2053,6 +2057,8 @@ static void _sde_crtc_set_suspend(struct drm_crtc *crtc, bool enable) 
	struct sde_crtc *sde_crtc;

	struct msm_drm_private *priv;

	struct sde_kms *sde_kms;

	struct drm_event event;

	u32 power_on;



	if (!crtc || !crtc->dev || !crtc->dev->dev_private) {

		SDE_ERROR("invalid crtc\n");
@@ -2071,13 +2077,18 @@ static void _sde_crtc_set_suspend(struct drm_crtc *crtc, bool enable) 


	mutex_lock(&sde_crtc->crtc_lock);



	event.type = DRM_EVENT_CRTC_POWER;

	event.length = sizeof(u32);

	/*

	 * Update CP on suspend/resume transitions

	 */

	if (enable && !sde_crtc->suspend)

	if (enable && !sde_crtc->suspend) {

		sde_cp_crtc_suspend(crtc);

	else if (!enable && sde_crtc->suspend)

		power_on = 0;

	} else if (!enable && sde_crtc->suspend) {

		sde_cp_crtc_resume(crtc);

		power_on = 1;

	}



	/*

	 * If the vblank refcount != 0, release a power reference on suspend
@@ -2090,7 +2101,8 @@ static void _sde_crtc_set_suspend(struct drm_crtc *crtc, bool enable) 
		_sde_crtc_vblank_enable_nolock(sde_crtc, !enable);



	sde_crtc->suspend = enable;



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

			(u8 *)&power_on);

	mutex_unlock(&sde_crtc->crtc_lock);

}
@@ -3556,3 +3568,9 @@ int sde_crtc_register_custom_event(struct sde_kms *kms, 


	return ret;

}



static int sde_crtc_power_interrupt_handler(struct drm_crtc *crtc_drm,

	bool en, struct sde_irq_callback *irq)

{

	return 0;

}