diff options
| author | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2025-02-17 16:47:58 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:33 +0200 |
| commit | 7857d8977e9864fef9a61d98b3814dd71c64443f (patch) | |
| tree | 6ee3b2f5e9f4d044d35a0941ab4b3413ef97f15b | |
| parent | 89800836bf32f5b0c14734c64d804fe73e34744f (diff) | |
drm/mediatek: mtk_dpi: Add checks for reg_h_fre_con existence
[ Upstream commit 8c9da7cd0bbcc90ab444454fecf535320456a312 ]
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 <ck.hu@mediatek.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250217154836.108895-6-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_dpi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 9c11d3158324..20a50180d4d4 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -410,12 +410,13 @@ 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); } |