From 2953da1589477c9aec85431339d28a8303d47945 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 17 Mar 2014 23:48:15 -0400 Subject: drm/radeon/dp: move sink power control to a separate function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This will be used elsewhere. Signed-off-by: Alex Deucher Acked-by: Christian König --- drivers/gpu/drm/radeon/atombios_dp.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/radeon/atombios_dp.c') diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index c79ba8a886bd..88d399c3f4fd 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) -- cgit v1.2.1