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drm/bridge: lt9611: properly program the dual host mode

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If the bridge is connected using both DSI ports, the driver should use
both of them all the time. Correct programming sequence to always use
dual-port mode if both dsi0 and dsi1 are connected.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-14-dmitry.baryshkov@linaro.org
This commit is contained in:
Dmitry Baryshkov
2023-01-18 10:16:58 +02:00
committed by Neil Armstrong
parent 4914cbc4fb
commit 5e83f359d9
1 changed files with 13 additions and 15 deletions
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28
drivers/gpu/drm/bridge/lontium-lt9611.c
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@@ -118,7 +118,7 @@ static int lt9611_mipi_input_digital(struct lt9611 *lt9611,
{ 0x8306, 0x0a },
};
if (mode->hdisplay == 3840)
if (lt9611->dsi1_node)
reg_cfg[1].def = 0x03;
return regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
@@ -191,16 +191,6 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod
{ 0x832d, 0x38 },
{ 0x8331, 0x08 },
};
const struct reg_sequence reg_cfg2[] = {
{ 0x830b, 0x03 },
{ 0x830c, 0xd0 },
{ 0x8348, 0x03 },
{ 0x8349, 0xe0 },
{ 0x8324, 0x72 },
{ 0x8325, 0x00 },
{ 0x832a, 0x01 },
{ 0x834a, 0x10 },
};
u8 pol = 0x10;
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
@@ -209,10 +199,18 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod
pol |= 0x1;
regmap_write(lt9611->regmap, 0x831d, pol);
if (mode->hdisplay == 3840)
regmap_multi_reg_write(lt9611->regmap, reg_cfg2, ARRAY_SIZE(reg_cfg2));
else
regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg));
if (lt9611->dsi1_node) {
unsigned int hact = mode->hdisplay;
hact >>= 2;
hact += 0x50;
hact = min(hact, 0x3e0U);
regmap_write(lt9611->regmap, 0x830b, hact / 256);
regmap_write(lt9611->regmap, 0x830c, hact % 256);
regmap_write(lt9611->regmap, 0x8348, hact / 256);
regmap_write(lt9611->regmap, 0x8349, hact % 256);
}
regmap_write(lt9611->regmap, 0x8326, pcr_m);