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drm/rockchip: Implement CRC debugfs API

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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: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170303133936.14964-5-tomeu.vizoso@collabora.com
This commit is contained in:
Tomeu Vizoso 2017-03-03 14:39:36 +01:00 committed by Sean Paul
parent 737d6e339f
commit 3190e58daf
1 changed files with 41 additions and 0 deletions
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41
drivers/gpu/drm/rockchip/rockchip_drm_vop.c
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@ -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)