Commit 3190e58d authored by Tomeu Vizoso's avatar Tomeu Vizoso Committed by Sean Paul
Browse files

drm/rockchip: Implement CRC debugfs API 



Implement the .set_crc_source() callback and call the DP helpers
accordingly to start and stop CRC capture.

This is only done if this CRTC is currently using the eDP connector.

v3: Remove superfluous check on rockchip_crtc_state->output_type

v6: Remove superfluous variable

Signed-off-by: default avatarTomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: default avatarMark Yao <mark.yao@rock-chips.com>
Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170303133936.14964-5-tomeu.vizoso@collabora.com
parent 737d6e33

drivers/gpu/drm/rockchip/rockchip_drm_vop.c

+41 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <drm/drm_crtc_helper.h>

#include <drm/drm_flip_work.h>

#include <drm/drm_plane_helper.h>

#include <drm/bridge/analogix_dp.h>



#include <linux/kernel.h>

#include <linux/module.h>
@@ -1111,6 +1112,45 @@ static void vop_crtc_destroy_state(struct drm_crtc *crtc, 
	kfree(s);

}



static struct drm_connector *vop_get_edp_connector(struct vop *vop)

{

	struct drm_crtc *crtc = &vop->crtc;

	struct drm_connector *connector;



	mutex_lock(&crtc->dev->mode_config.mutex);

	drm_for_each_connector(connector, crtc->dev)

		if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {

			mutex_unlock(&crtc->dev->mode_config.mutex);

			return connector;

		}

	mutex_unlock(&crtc->dev->mode_config.mutex);



	return NULL;

}



static int vop_crtc_set_crc_source(struct drm_crtc *crtc,

				   const char *source_name, size_t *values_cnt)

{

	struct vop *vop = to_vop(crtc);

	struct drm_connector *connector;

	int ret;



	connector = vop_get_edp_connector(vop);

	if (!connector)

		return -EINVAL;



	*values_cnt = 3;



	if (source_name && strcmp(source_name, "auto") == 0)

		ret = analogix_dp_start_crc(connector);

	else if (!source_name)

		ret = analogix_dp_stop_crc(connector);

	else

		ret = -EINVAL;



	return ret;

}



static const struct drm_crtc_funcs vop_crtc_funcs = {

	.set_config = drm_atomic_helper_set_config,

	.page_flip = drm_atomic_helper_page_flip,
@@ -1120,6 +1160,7 @@ static const struct drm_crtc_funcs vop_crtc_funcs = { 
	.atomic_destroy_state = vop_crtc_destroy_state,

	.enable_vblank = vop_crtc_enable_vblank,

	.disable_vblank = vop_crtc_disable_vblank,

	.set_crc_source = vop_crtc_set_crc_source,

};



static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)

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