In order to IGT test colorspace we'll want to print
the currently enabled colorspace on a stream. We add
a new debugfs to do so, using the same scheme as
current bpc reporting.
This might also come in handy when debugging display
issues.
v4:
- Fix function doc comment
- Fix sRGB debug print
Signed-off-by: Harry Wentland <harry.wentland@xxxxxxx>
Cc: Pekka Paalanen <ppaalanen@xxxxxxxxx>
Cc: Sebastian Wick <sebastian.wick@xxxxxxxxxx>
Cc: Vitaly.Prosyak@xxxxxxx
Cc: Joshua Ashton <joshua@xxxxxxxxx>
Cc: Simon Ser <contact@xxxxxxxxxxx>
Cc: Melissa Wen <mwen@xxxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
---
.../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 57 +++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 82234397dd44..caf13b2e8cb6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -906,6 +906,61 @@ static int amdgpu_current_bpc_show(struct seq_file *m, void *data)
}
DEFINE_SHOW_ATTRIBUTE(amdgpu_current_bpc);
+/*
+ * Returns the current colorspace for the crtc.
+ * Example usage: cat /sys/kernel/debug/dri/0/crtc-0/amdgpu_current_colorspace
+ */
+static int amdgpu_current_colorspace_show(struct seq_file *m, void *data)
+{
+ struct drm_crtc *crtc = m->private;
+ struct drm_device *dev = crtc->dev;
+ struct dm_crtc_state *dm_crtc_state = NULL;
+ int res = -ENODEV;
+
+ mutex_lock(&dev->mode_config.mutex);
+ drm_modeset_lock(&crtc->mutex, NULL);
+ if (crtc->state == NULL)
+ goto unlock;
+
+ dm_crtc_state = to_dm_crtc_state(crtc->state);
+ if (dm_crtc_state->stream == NULL)
+ goto unlock;
+
+ switch (dm_crtc_state->stream->output_color_space) {
+ case COLOR_SPACE_SRGB:
+ seq_printf(m, "sRGB");
+ break;
+ case COLOR_SPACE_YCBCR601:
+ case COLOR_SPACE_YCBCR601_LIMITED:
+ seq_printf(m, "BT601_YCC");
+ break;
+ case COLOR_SPACE_YCBCR709:
+ case COLOR_SPACE_YCBCR709_LIMITED:
+ seq_printf(m, "BT709_YCC");
+ break;
+ case COLOR_SPACE_ADOBERGB:
+ seq_printf(m, "opRGB");
+ break;
+ case COLOR_SPACE_2020_RGB_FULLRANGE:
+ seq_printf(m, "BT2020_RGB");
+ break;
+ case COLOR_SPACE_2020_YCBCR:
+ seq_printf(m, "BT2020_YCC");
+ break;
+ default:
+ goto unlock;
+ }
+ res = 0;
+
+unlock:
+ drm_modeset_unlock(&crtc->mutex);
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return res;
+}
+DEFINE_SHOW_ATTRIBUTE(amdgpu_current_colorspace);
+
+
/*
* Example usage:
* Disable dsc passthrough, i.e.,: have dsc decoding at converver, not external RX
@@ -3139,6 +3194,8 @@ void crtc_debugfs_init(struct drm_crtc *crtc)
#endif
debugfs_create_file("amdgpu_current_bpc", 0644, crtc->debugfs_entry,
crtc, &amdgpu_current_bpc_fops);
+ debugfs_create_file("amdgpu_current_colorspace", 0644, crtc->debugfs_entry,
+ crtc, &amdgpu_current_colorspace_fops);
}
/*
--
2.41.0
