Commit 44b07120 authored by Rex-BC Chen's avatar Rex-BC Chen Committed by Chun-Kuang Hu
Browse files

drm/mediatek: dpi: Add check for max clock rate in mode_valid 



Add per-platform max clock rate check in mtk_dpi_bridge_mode_valid.

Signed-off-by: default avatarPi-Hsun Shih <pihsun@chromium.org>
Signed-off-by: default avatarRex-BC Chen <rex-bc.chen@mediatek.com>
Signed-off-by: default avatarJitao Shi <jitao.shi@mediatek.com>
Signed-off-by: default avatarChun-Kuang Hu <chunkuang.hu@kernel.org>
parent ee5ee188

drivers/gpu/drm/mediatek/mtk_dpi.c

+18 −0
Original line number Diff line number Diff line
@@ -120,6 +120,7 @@ struct mtk_dpi_yc_limit { 
struct mtk_dpi_conf {

	unsigned int (*cal_factor)(int clock);

	u32 reg_h_fre_con;

	u32 max_clock_khz;

	bool edge_sel_en;

};
@@ -557,9 +558,23 @@ static void mtk_dpi_bridge_enable(struct drm_bridge *bridge) 
	mtk_dpi_set_display_mode(dpi, &dpi->mode);

}



static enum drm_mode_status

mtk_dpi_bridge_mode_valid(struct drm_bridge *bridge,

			  const struct drm_display_info *info,

			  const struct drm_display_mode *mode)

{

	struct mtk_dpi *dpi = bridge_to_dpi(bridge);



	if (mode->clock > dpi->conf->max_clock_khz)

		return MODE_CLOCK_HIGH;



	return MODE_OK;

}



static const struct drm_bridge_funcs mtk_dpi_bridge_funcs = {

	.attach = mtk_dpi_bridge_attach,

	.mode_set = mtk_dpi_bridge_mode_set,

	.mode_valid = mtk_dpi_bridge_mode_valid,

	.disable = mtk_dpi_bridge_disable,

	.enable = mtk_dpi_bridge_enable,

};
@@ -668,17 +683,20 @@ static unsigned int mt8183_calculate_factor(int clock) 
static const struct mtk_dpi_conf mt8173_conf = {

	.cal_factor = mt8173_calculate_factor,

	.reg_h_fre_con = 0xe0,

	.max_clock_khz = 300000,

};



static const struct mtk_dpi_conf mt2701_conf = {

	.cal_factor = mt2701_calculate_factor,

	.reg_h_fre_con = 0xb0,

	.edge_sel_en = true,

	.max_clock_khz = 150000,

};



static const struct mtk_dpi_conf mt8183_conf = {

	.cal_factor = mt8183_calculate_factor,

	.reg_h_fre_con = 0xe0,

	.max_clock_khz = 100000,

};



static int mtk_dpi_probe(struct platform_device *pdev)