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[135.19.110.125]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-45da74e9fdasm9072351cf.31.2024.10.05.07.43.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 05 Oct 2024 07:43:04 -0700 (PDT) From: Jonathan Marek To: freedreno@lists.freedesktop.org Cc: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Jessica Zhang , Konrad Dybcio , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER for Qualcomm display hardware), dri-devel@lists.freedesktop.org (open list:DRM DRIVER for Qualcomm display hardware), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 1/2] drm/msm/dsi: improve/fix dsc pclk calculation Date: Sat, 5 Oct 2024 10:38:09 -0400 Message-ID: <20241005143818.2036-1-jonathan@marek.ca> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 drm_mode_vrefresh() can introduce a large rounding error, avoid it. Signed-off-by: Jonathan Marek --- 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); } static unsigned long dsi_get_pclk_rate(const struct drm_display_mode *mode,