diff options
| author | Charlene Liu <charlene.liu@amd.com> | 2018-01-18 19:09:06 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:19:34 -0500 |
| commit | 5180d4a4766d7df4b3ffae919f867ce9598d8942 (patch) | |
| tree | 22104dd26c169a46fab2b511fad280af3966104d /drivers | |
| parent | 60eb6d98ec72382478a854262dee50426772214c (diff) | |
| download | linux-5180d4a4766d7df4b3ffae919f867ce9598d8942.tar.bz2 | |
drm/amd/display: add eDP 1.2+ polling for T7
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
4 files changed, 33 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c index 524f4aafa543..bae9b0587e12 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c @@ -123,6 +123,28 @@ bool edp_receiver_ready_T9(struct dc_link *link) } while (++tries < 50); return result; } +bool edp_receiver_ready_T7(struct dc_link *link) +{ + unsigned int tries = 0; + unsigned char sinkstatus = 0; + unsigned char edpRev = 0; + enum dc_status result = DC_OK; + + result = core_link_read_dpcd(link, DP_EDP_DPCD_REV, &edpRev, sizeof(edpRev)); + if (result == DC_OK && edpRev < DP_EDP_12) + return true; + /* start from eDP version 1.2, SINK_STAUS indicate the sink is ready.*/ + do { + sinkstatus = 0; + result = core_link_read_dpcd(link, DP_SINK_STATUS, &sinkstatus, sizeof(sinkstatus)); + if (sinkstatus == 1) + break; + if (result != DC_OK) + break; + udelay(25); //MAx T7 is 50ms + } while (++tries < 300); + return result; +} void dp_disable_link_phy(struct dc_link *link, enum signal_type signal) { diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c index 83bae207371d..8146b9079d51 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c @@ -920,6 +920,7 @@ static void dce110_stream_encoder_dp_blank( { struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc); uint32_t retries = 0; + uint32_t reg1 = 0; uint32_t max_retries = DP_BLANK_MAX_RETRY * 10; /* Note: For CZ, we are changing driver default to disable @@ -928,7 +929,10 @@ static void dce110_stream_encoder_dp_blank( * handful of panels that cannot handle disable stream at * HBLANK and will result in a white line flash across the * screen on stream disable. */ - + REG_GET(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, ®1); + if ((reg1 & 0x1) == 0) + /*stream not enabled*/ + return; /* Specify the video stream disable point * (2 = start of the next vertical blank) */ REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2); diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c index 364b88a1d4ea..bc1c4546ef69 100644 --- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c @@ -927,9 +927,13 @@ void hwss_edp_backlight_control( * Enable it in the future if necessary. */ /* dc_service_sleep_in_milliseconds(50); */ + /*edp 1.2*/ + if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_ON) + edp_receiver_ready_T7(link); link_transmitter_control(ctx->dc_bios, &cntl); /*edp 1.2*/ - edp_receiver_ready_T9(link); + if (cntl.action == TRANSMITTER_CONTROL_BACKLIGHT_OFF) + edp_receiver_ready_T9(link); } void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option) @@ -976,9 +980,6 @@ void dce110_disable_stream(struct pipe_ctx *pipe_ctx, int option) */ } - /* blank at encoder level */ - if (dc_is_dp_signal(pipe_ctx->stream->signal)) - pipe_ctx->stream_res.stream_enc->funcs->dp_blank(pipe_ctx->stream_res.stream_enc); link->link_enc->funcs->connect_dig_be_to_fe( link->link_enc, diff --git a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h index 46bb201aab6a..30be7bb4a01a 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h +++ b/drivers/gpu/drm/amd/display/dc/inc/link_hwss.h @@ -52,6 +52,7 @@ void dp_enable_link_phy( void dp_receiver_power_ctrl(struct dc_link *link, bool on); bool edp_receiver_ready_T9(struct dc_link *link); +bool edp_receiver_ready_T7(struct dc_link *link); void dp_disable_link_phy(struct dc_link *link, enum signal_type signal); |