On 10/5/24 12:31 PM, Konrad Dybcio wrote:
On 5.10.2024 4:38 PM, Jonathan Marek wrote:
drm_mode_vrefresh() can introduce a large rounding error, avoid it.
Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 185d7de0bf376..1205aa398e445 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -542,7 +542,7 @@ static unsigned long dsi_adjust_pclk_for_compression(const struct drm_display_mo
int new_htotal = mode->htotal - mode->hdisplay + new_hdisplay;
- return new_htotal * mode->vtotal * drm_mode_vrefresh(mode);
+ return mult_frac(mode->clock * 1000u, new_htotal, mode->htotal);
This seems to ignore mult/div by two on certain mode flags.. is that
intended?
Konrad
It is intended - those flags are not relevant to DSI panels, and DSC
pclk adjustment is only about how DSC affects htotal.
