From: AngeloGioacchino Del Regno Date: Mon, 17 Feb 2025 15:47:58 +0000 (+0100) Subject: drm/mediatek: mtk_dpi: Add checks for reg_h_fre_con existence X-Git-Tag: v6.15-rc1~120^2~5^2~12 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8c9da7cd0bbcc90ab444454fecf535320456a312;p=thirdparty%2Fkernel%2Flinux.git drm/mediatek: mtk_dpi: Add checks for reg_h_fre_con existence In preparation for adding support for newer DPI instances which do support direct-pin but do not have any H_FRE_CON register, like the one found in MT8195 and MT8188, add a branch to check if the reg_h_fre_con variable was declared in the mtk_dpi_conf structure for the probed SoC DPI version. As a note, this is useful specifically only for cases in which the support_direct_pin variable is true, so mt8195-dpintf is not affected by any issue. Reviewed-by: CK Hu Signed-off-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/dri-devel/patch/20250217154836.108895-6-angelogioacchino.delregno@collabora.com/ Signed-off-by: Chun-Kuang Hu --- diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 59c2e4f32a611..bb1a17f1384b2 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -431,12 +431,13 @@ static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable) static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi) { - mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); + if (dpi->conf->reg_h_fre_con) + mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N); } static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi) { - if (dpi->conf->edge_sel_en) + if (dpi->conf->edge_sel_en && dpi->conf->reg_h_fre_con) mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN); }