This will be used elsewhere.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
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);
--
1.8.3.1
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