Commit 4df4925b authored by José Roberto de Souza's avatar José Roberto de Souza Committed by Rodrigo Vivi

drm/i915/psr: Set DPCD PSR2 enable bit when needed

In the 2 eDP1.4a pannels tested set or not set bit have no effect
but is better set it and comply with specification.
Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180328223046.16125-9-jose.souza@intel.com
parent 26e5378d
......@@ -278,18 +278,19 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u8 dpcd_val = DP_PSR_ENABLE;
/* Enable ALPM at sink for psr2 */
if (dev_priv->psr.psr2_enabled && dev_priv->psr.alpm)
drm_dp_dpcd_writeb(&intel_dp->aux,
DP_RECEIVER_ALPM_CONFIG,
DP_ALPM_ENABLE);
if (dev_priv->psr.psr2_enabled)
dpcd_val |= DP_PSR_ENABLE_PSR2;
if (dev_priv->psr.link_standby)
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
else
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
DP_PSR_ENABLE);
dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val);
drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0);
}
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment