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drm/bridge: anx6345: Switch to common helpers to power up/down dp link

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Use the common dp link power up/down helpers to avoid duplicating code.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250318063452.4983-3-andyshrk@163.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
This commit is contained in:
Andy Yan 2025-03-18 14:34:37 +08:00 committed by Dmitry Baryshkov
parent 23ee8c6b34
commit 4adde49ba4
1 changed files with 1 additions and 29 deletions
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30
drivers/gpu/drm/bridge/analogix/analogix-anx6345.c
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@ -143,35 +143,7 @@ static int anx6345_dp_link_training(struct anx6345 *anx6345)
if (err)
return err;
/*
* Power up the sink (DP_SET_POWER register is only available on DPCD
* v1.1 and later).
*/
if (anx6345->dpcd[DP_DPCD_REV] >= 0x11) {
err = drm_dp_dpcd_readb(&anx6345->aux, DP_SET_POWER, &dpcd[0]);
if (err < 0) {
DRM_ERROR("Failed to read DP_SET_POWER register: %d\n",
err);
return err;
}
dpcd[0] &= ~DP_SET_POWER_MASK;
dpcd[0] |= DP_SET_POWER_D0;
err = drm_dp_dpcd_writeb(&anx6345->aux, DP_SET_POWER, dpcd[0]);
if (err < 0) {
DRM_ERROR("Failed to power up DisplayPort link: %d\n",
err);
return err;
}
/*
* According to the DP 1.1 specification, a "Sink Device must
* exit the power saving state within 1 ms" (Section 2.5.3.1,
* Table 5-52, "Sink Control Field" (register 0x600).
*/
usleep_range(1000, 2000);
}
drm_dp_link_power_up(&anx6345->aux, anx6345->dpcd[DP_DPCD_REV]);
/* Possibly enable downspread on the sink */
err = regmap_write(anx6345->map[I2C_IDX_DPTX],