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drm/radeon: add DisplayPort MST support (v2)

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This adds initial DP 1.2 MST support to radeon, on CAYMAN
and up in theory.

This is off by default.

v2: agd5f:
- add UNIPHY3 offsets
- move atom cmd table code into atombios_encoders.c
- whitespace cleanup
- replace some magic numbers with proper defines

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dave Airlie
2015-02-24 09:24:04 +10:00
committed by Alex Deucher
parent 8f0fc088f5
commit 9843ead08f
13 changed files with 998 additions and 6 deletions
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11
drivers/gpu/drm/radeon/atombios_crtc.c
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@@ -610,6 +610,13 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
}
}
if (radeon_encoder->is_mst_encoder) {
struct radeon_encoder_mst *mst_enc = radeon_encoder->enc_priv;
struct radeon_connector_atom_dig *dig_connector = mst_enc->connector->con_priv;
dp_clock = dig_connector->dp_clock;
}
/* use recommended ref_div for ss */
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
if (radeon_crtc->ss_enabled) {
@@ -956,7 +963,9 @@ static bool atombios_crtc_prepare_pll(struct drm_crtc *crtc, struct drm_display_
radeon_crtc->bpc = 8;
radeon_crtc->ss_enabled = false;
if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
if (radeon_encoder->is_mst_encoder) {
radeon_dp_mst_prepare_pll(crtc, mode);
} else if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) ||
(radeon_encoder_get_dp_bridge_encoder_id(radeon_crtc->encoder) != ENCODER_OBJECT_ID_NONE)) {
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
struct drm_connector *connector =