drm/msm/dsi: Remove repeated calculation of slice_per_intf

slice_per_intf is already computed for intf_width, which holds the same
value as hdisplay.

Fixes: 08802f515c3c ("drm/msm/dsi: Add support for DSC configuration")
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Patchwork: https://patchwork.freedesktop.org/patch/508933/
Link: https://lore.kernel.org/r/20221026182824.876933-3-marijn.suijten@somainline.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 8026fe6..d948325 100644 (file)
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -842,7 +842,7 @@ static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable,
 static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mode, u32 hdisplay)
 {
        struct drm_dsc_config *dsc = msm_host->dsc;
-       u32 reg, intf_width, reg_ctrl, reg_ctrl2;
+       u32 reg, reg_ctrl, reg_ctrl2;
        u32 slice_per_intf, total_bytes_per_intf;
        u32 pkt_per_line;
        u32 bytes_in_slice;
@@ -851,8 +851,7 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod
        /* first calculate dsc parameters and then program
         * compress mode registers
         */
-       intf_width = hdisplay;
-       slice_per_intf = DIV_ROUND_UP(intf_width, dsc->slice_width);
+       slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width);
 
        /* If slice_per_pkt is greater than slice_per_intf
         * then default to 1. This can happen during partial
@@ -861,7 +860,6 @@ static void dsi_update_dsc_timing(struct msm_dsi_host *msm_host, bool is_cmd_mod
        if (slice_per_intf > dsc->slice_count)
                dsc->slice_count = 1;
 
-       slice_per_intf = DIV_ROUND_UP(hdisplay, dsc->slice_width);
        bytes_in_slice = DIV_ROUND_UP(dsc->slice_width * dsc->bits_per_pixel, 8);
 
        dsc->slice_chunk_size = bytes_in_slice;