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drm/bridge: analogix_dp: Retry bridge enable when it failed

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When we enable bridge failed, we have to retry it, otherwise we would get
the abnormal display.

Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423105003.9004-5-enric.balletbo@collabora.com
This commit is contained in:
zain wang
2018-04-23 12:49:40 +02:00
committed by Andrzej Hajda
parent 7ba8fb5704
commit 8a335736f9
3 changed files with 57 additions and 18 deletions
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5
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
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@@ -333,7 +333,7 @@ void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp,
}
}
void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
int analogix_dp_init_analog_func(struct analogix_dp_device *dp)
{
u32 reg;
int timeout_loop = 0;
@@ -355,7 +355,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
timeout_loop++;
if (DP_TIMEOUT_LOOP_COUNT < timeout_loop) {
dev_err(dp->dev, "failed to get pll lock status\n");
return;
return -ETIMEDOUT;
}
usleep_range(10, 20);
}
@@ -366,6 +366,7 @@ void analogix_dp_init_analog_func(struct analogix_dp_device *dp)
reg &= ~(SERDES_FIFO_FUNC_EN_N | LS_CLK_DOMAIN_FUNC_EN_N
| AUX_FUNC_EN_N);
writel(reg, dp->reg_base + ANALOGIX_DP_FUNC_EN_2);
return 0;
}
void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp)