diff mbox series

[v4,5/6] drm/msm/dsi: update hdisplay calculation for dsi_timing_setup

Message ID 20230329-rfc-msm-dsc-helper-v4-5-1b79c78b30d7@quicinc.com (mailing list archive)
State Superseded
Headers show
Series Introduce MSM-specific DSC helpers | expand

Commit Message

Jessica Zhang April 5, 2023, 12:41 a.m. UTC
hdisplay for compressed images should be calculated as bytes_per_slice *
slice_count. Thus, use MSM DSC helper to calculate hdisplay for
dsi_timing_setup instead of directly using mode->hdisplay.

Changes in v3:
- Split from previous patch
- Initialized hdisplay as uncompressed pclk per line at the beginning of
  dsi_timing_setup as to not break dual DSI calculations

Changes in v4:
- Moved pclk_per_intf calculations to DSC hdisplay adjustments

Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Dmitry Baryshkov April 5, 2023, 7:28 p.m. UTC | #1
On 05/04/2023 03:41, Jessica Zhang wrote:
> hdisplay for compressed images should be calculated as bytes_per_slice *
> slice_count. Thus, use MSM DSC helper to calculate hdisplay for
> dsi_timing_setup instead of directly using mode->hdisplay.
> 
> Changes in v3:
> - Split from previous patch
> - Initialized hdisplay as uncompressed pclk per line at the beginning of
>    dsi_timing_setup as to not break dual DSI calculations
> 
> Changes in v4:
> - Moved pclk_per_intf calculations to DSC hdisplay adjustments
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
> ---
>   drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

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

Patch

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 6a6218a9655f..412339cc9301 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -958,7 +958,7 @@  static void dsi_timing_setup(struct msm_dsi_host *msm_host, bool is_bonded_dsi)
 		 * pulse width same
 		 */
 		h_total -= hdisplay;
-		hdisplay /= 3;
+		hdisplay = msm_dsc_get_pclk_per_intf(msm_host->dsc) / 3;
 		h_total += hdisplay;
 		ha_end = ha_start + hdisplay;
 	}