On QCM2290 chipset DPU does not support UBWC.

Add a dpu cap to indicate this and do not expose compressed formats
in this case.

changes since RFC:
	- use ubwc enc and dec version of mdss_data instead of catalog
	  to decide if ubwc is supported

Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 1c3a2657450c..40c4dd2c3139 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -18,6 +18,7 @@
 #include <drm/drm_gem_atomic_helper.h>
 
 #include "msm_drv.h"
+#include "msm_mdss.h"
 #include "dpu_kms.h"
 #include "dpu_formats.h"
 #include "dpu_hw_sspp.h"
@@ -1342,10 +1343,14 @@ void dpu_plane_danger_signal_ctrl(struct drm_plane *plane, bool enable)
 static bool dpu_plane_format_mod_supported(struct drm_plane *plane,
 		uint32_t format, uint64_t modifier)
 {
+	struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane);
+	bool has_no_ubwc = (dpu_kms->mdss->ubwc_enc_version == 0) &&
+			   (dpu_kms->mdss->ubwc_dec_version == 0);
+
 	if (modifier == DRM_FORMAT_MOD_LINEAR)
 		return true;
 
-	if (modifier == DRM_FORMAT_MOD_QCOM_COMPRESSED)
+	if (modifier == DRM_FORMAT_MOD_QCOM_COMPRESSED && !has_no_ubwc)
 		return dpu_find_format(format, qcom_compressed_supported_formats,
 				ARRAY_SIZE(qcom_compressed_supported_formats));
 
-- 
2.44.0

On Fri, Jun 28, 2024 at 04:39:27PM GMT, Abhinav Kumar wrote:
> On QCM2290 chipset DPU does not support UBWC.
> 
> Add a dpu cap to indicate this and do not expose compressed formats
> in this case.
> 
> changes since RFC:
> 	- use ubwc enc and dec version of mdss_data instead of catalog
> 	  to decide if ubwc is supported
> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry