This will be used elsewhere.
Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/atombios_dp.c | 26 +++++++++++++++++++++----- drivers/gpu/drm/radeon/radeon_mode.h | 2 ++ 2 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index c79ba8a..88d399c 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -603,6 +603,26 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector) return true; }
+void radeon_dp_set_rx_power_state(struct drm_connector *connector, + u8 power_state) +{ + struct radeon_connector *radeon_connector = to_radeon_connector(connector); + struct radeon_connector_atom_dig *dig_connector; + + if (!radeon_connector->con_priv) + return; + + dig_connector = radeon_connector->con_priv; + + /* power up/down the sink */ + if (dig_connector->dpcd[0] >= 0x11) { + radeon_write_dpcd_reg(radeon_connector, + DP_SET_POWER, power_state); + usleep_range(1000, 2000); + } +} + + struct radeon_dp_link_train_info { struct radeon_device *rdev; struct drm_encoder *encoder; @@ -673,11 +693,7 @@ static int radeon_dp_link_train_init(struct radeon_dp_link_train_info *dp_info) u8 tmp;
/* power up the sink */ - if (dp_info->dpcd[0] >= 0x11) { - radeon_write_dpcd_reg(dp_info->radeon_connector, - DP_SET_POWER, DP_SET_POWER_D0); - usleep_range(1000, 2000); - } + radeon_dp_set_rx_power_state(dp_info->connector, DP_SET_POWER_D0);
/* possibly enable downspread on the sink */ if (dp_info->dpcd[3] & 0x1) diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index 402dbe32..e390f55 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -690,6 +690,8 @@ extern u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector); extern bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector); extern int radeon_dp_get_panel_mode(struct drm_encoder *encoder, struct drm_connector *connector); +extern void radeon_dp_set_rx_power_state(struct drm_connector *connector, + u8 power_state); extern void atombios_dig_encoder_setup(struct drm_encoder *encoder, int action, int panel_mode); extern void radeon_atom_encoder_init(struct radeon_device *rdev); extern void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev);