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drm/radeon/dp: move sink power control to a separate function 

This will be used elsewhere.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher 2014-03-17 23:48:15 -04:00 committed by Christian König
parent f3381dfc97
commit 2953da1589
2 changed files with 23 additions and 5 deletions
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26
drivers/gpu/drm/radeon/atombios_dp.c
View File

@ -603,6 +603,26 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
return true; 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_dp_link_train_info {
struct radeon_device *rdev; struct radeon_device *rdev;
struct drm_encoder *encoder; 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; u8 tmp;
/* power up the sink */ /* power up the sink */
if (dp_info->dpcd[0] >= 0x11) { radeon_dp_set_rx_power_state(dp_info->connector, DP_SET_POWER_D0);
radeon_write_dpcd_reg(dp_info->radeon_connector,
DP_SET_POWER, DP_SET_POWER_D0);
usleep_range(1000, 2000);
}
/* possibly enable downspread on the sink */ /* possibly enable downspread on the sink */
if (dp_info->dpcd[3] & 0x1) if (dp_info->dpcd[3] & 0x1)

2
drivers/gpu/drm/radeon/radeon_mode.h
View File

@ -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 bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector);
extern int radeon_dp_get_panel_mode(struct drm_encoder *encoder, extern int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
struct drm_connector *connector); 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 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_encoder_init(struct radeon_device *rdev);
extern void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev); extern void radeon_atom_disp_eng_pll_init(struct radeon_device *rdev);