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drm/mediatek: add clock factor for different IC

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different IC has different clock designed in HDMI, the factor for
calculate clock should be different. Usinng the data in of_node
to find this factor.

Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
chunhui dai 2018-10-03 11:41:44 +08:00 committed by CK Hu
parent 79080159a7
commit 55c78aa5c8
1 changed files with 15 additions and 9 deletions
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24
drivers/gpu/drm/mediatek/mtk_dpi.c
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@ -113,6 +113,7 @@ struct mtk_dpi_yc_limit {
};
struct mtk_dpi_conf {
unsigned int (*cal_factor)(int clock);
u32 reg_h_fre_con;
bool edge_sel_en;
};
@ -431,15 +432,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
unsigned int factor;
/* let pll_rate can fix the valid range of tvdpll (1G~2GHz) */
if (mode->clock <= 27000)
factor = 3 << 4;
else if (mode->clock <= 84000)
factor = 3 << 3;
else if (mode->clock <= 167000)
factor = 3 << 2;
else
factor = 3 << 1;
factor = dpi->conf->cal_factor(mode->clock);
drm_display_mode_to_videomode(mode, &vm);
pll_rate = vm.pixelclock * factor;
@ -653,7 +646,20 @@ static const struct component_ops mtk_dpi_component_ops = {
.unbind = mtk_dpi_unbind,
};
static unsigned int mt8173_calculate_factor(int clock)
{
if (clock <= 27000)
return 3 << 4;
else if (clock <= 84000)
return 3 << 3;
else if (clock <= 167000)
return 3 << 2;
else
return 3 << 1;
}
static const struct mtk_dpi_conf mt8173_conf = {
.cal_factor = mt8173_calculate_factor,
.reg_h_fre_con = 0xe0,
};