diff options
| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2019-10-29 06:50:49 +0300 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2019-10-30 03:44:53 +0300 |
| commit | b3545e086877557b8b933c0fbf64dca065a1f5f6 (patch) | |
| tree | 94208b4c3e105f28bf4f144d764b139247852c41 /drivers/gpu/drm | |
| parent | a0e047156cdebbccf253768b39d7e1dbf954c449 (diff) | |
| download | linux-b3545e086877557b8b933c0fbf64dca065a1f5f6.tar.xz | |
drm/i915/tgl: add support to one DP-MST stream
This is the minimum change to support 1 (and only 1) DP-MST monitor
connected on Tiger Lake. This change was isolated from previous patch
from José. In order to support more streams we will need to create a
master-slave relation on the transcoders and that is not currently
working yet.
v2: remove unused macro and use REG_FIELD_PREP() (Ville)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029035049.5907-1-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 281594bcbfae..fed7fc56dd92 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -1905,6 +1905,9 @@ intel_ddi_transcoder_func_reg_val_get(const struct intel_crtc_state *crtc_state) } else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST)) { temp |= TRANS_DDI_MODE_SELECT_DP_MST; temp |= DDI_PORT_WIDTH(crtc_state->lane_count); + + if (INTEL_GEN(dev_priv) >= 12) + temp |= TRANS_DDI_MST_TRANSPORT_SELECT(crtc_state->cpu_transcoder); } else { temp |= TRANS_DDI_MODE_SELECT_DP_SST; temp |= DDI_PORT_WIDTH(crtc_state->lane_count); diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5894e46ef68b..55de9052add7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -9657,6 +9657,9 @@ enum skl_power_gate { #define TRANS_DDI_EDP_INPUT_A_ONOFF (4 << 12) #define TRANS_DDI_EDP_INPUT_B_ONOFF (5 << 12) #define TRANS_DDI_EDP_INPUT_C_ONOFF (6 << 12) +#define TRANS_DDI_MST_TRANSPORT_SELECT_MASK REG_GENMASK(12, 10) +#define TRANS_DDI_MST_TRANSPORT_SELECT(trans) \ + REG_FIELD_PREP(TRANS_DDI_MST_TRANSPORT_SELECT_MASK, trans) #define TRANS_DDI_HDCP_SIGNALLING (1 << 9) #define TRANS_DDI_DP_VC_PAYLOAD_ALLOC (1 << 8) #define TRANS_DDI_HDMI_SCRAMBLER_CTS_ENABLE (1 << 7) |