diff options
| author | zain wang <wzz@rock-chips.com> | 2018-04-23 12:49:40 +0200 |
|---|---|---|
| committer | Andrzej Hajda <a.hajda@samsung.com> | 2018-04-24 08:34:32 +0200 |
| commit | 8a335736f94edc9c8c977d931301e6a0326fbc3e (patch) | |
| tree | 4ccf9f30c3ba9d69e4f75e092ff47d742c5affba /drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | |
| parent | 7ba8fb5704e958b94b6f0260f20afca58b35a55a (diff) | |
drm/bridge: analogix_dp: Retry bridge enable when it failed
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
Diffstat (limited to 'drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index e78c861b9e06..b47c5af43560 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -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) |