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| author | Jonathan Marek <jonathan@marek.ca> | 2024-10-07 07:01:48 +0200 |
|---|---|---|
| committer | Abhinav Kumar <quic_abhinavk@quicinc.com> | 2024-10-14 22:16:17 +0200 |
| commit | 24436a540d16ca6a523b8e5441180001c31b6b35 (patch) | |
| tree | 0f291f21f271613356cd12f3c6c29f8e3e3cc431 /drivers/gpu/drm | |
| parent | drm/msm/hdmi: drop pll_cmp_to_fdata from hdmi_phy_8998 (diff) | |
| download | linux-24436a540d16ca6a523b8e5441180001c31b6b35.tar.xz linux-24436a540d16ca6a523b8e5441180001c31b6b35.zip | |
drm/msm/dsi: improve/fix dsc pclk calculation
drm_mode_vrefresh() can introduce a large rounding error, avoid it.
Fixes: 7c9e4a554d4a ("drm/msm/dsi: Reduce pclk rate for compression")
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/618432/
Link: https://lore.kernel.org/r/20241007050157.26855-1-jonathan@marek.ca
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/msm/dsi/dsi_host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index 185d7de0bf37..1205aa398e44 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); } static unsigned long dsi_get_pclk_rate(const struct drm_display_mode *mode, |