From da275061a87d1a495af10251c9b7d648ff04de98 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 14 Aug 2018 14:53:52 -0500 Subject: [PATCH] drm/amdgpu/display: add support for LVDS This adds support for LVDS displays. Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++ drivers/gpu/drm/amd/display/dc/core/dc_link.c | 31 ++++++++++++++++++++ .../gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 34 ++++++++++++++++++++++ .../gpu/drm/amd/display/dc/dce/dce_link_encoder.h | 7 +++++ .../drm/amd/display/dc/dce/dce_stream_encoder.c | 25 ++++++++++++++++ .../gpu/drm/amd/display/dc/inc/hw/link_encoder.h | 4 +++ .../gpu/drm/amd/display/dc/inc/hw/stream_encoder.h | 4 +++ drivers/gpu/drm/amd/display/include/signal_types.h | 5 ++++ 8 files changed, 112 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 971f9c06bad6..b54fbcc7b10c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3376,6 +3376,8 @@ static int to_drm_connector_type(enum signal_type st) return DRM_MODE_CONNECTOR_HDMIA; case SIGNAL_TYPE_EDP: return DRM_MODE_CONNECTOR_eDP; + case SIGNAL_TYPE_LVDS: + return DRM_MODE_CONNECTOR_LVDS; case SIGNAL_TYPE_RGB: return DRM_MODE_CONNECTOR_VGA; case SIGNAL_TYPE_DISPLAY_PORT: diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 981f7cbd31cc..dde63bfbaf1b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -1087,6 +1087,9 @@ static bool construct( dal_irq_get_rx_source(hpd_gpio); } break; + case CONNECTOR_ID_LVDS: + link->connector_signal = SIGNAL_TYPE_LVDS; + break; default: DC_LOG_WARNING("Unsupported Connector type:%d!\n", link->link_id.id); goto create_fail; @@ -1920,6 +1923,25 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx) dal_ddc_service_read_scdc_data(link->ddc); } +static void enable_link_lvds(struct pipe_ctx *pipe_ctx) +{ + struct dc_stream_state *stream = pipe_ctx->stream; + struct dc_link *link = stream->sink->link; + + if (stream->phy_pix_clk == 0) + stream->phy_pix_clk = stream->timing.pix_clk_khz; + + memset(&stream->sink->link->cur_link_settings, 0, + sizeof(struct dc_link_settings)); + + link->link_enc->funcs->enable_lvds_output( + link->link_enc, + pipe_ctx->clock_source->id, + pipe_ctx->stream->signal, + stream->phy_pix_clk); + +} + /****************************enable_link***********************************/ static enum dc_status enable_link( struct dc_state *state, @@ -1943,6 +1965,10 @@ static enum dc_status enable_link( enable_link_hdmi(pipe_ctx); status = DC_OK; break; + case SIGNAL_TYPE_LVDS: + enable_link_lvds(pipe_ctx); + status = DC_OK; + break; case SIGNAL_TYPE_VIRTUAL: status = DC_OK; break; @@ -2492,6 +2518,11 @@ void core_link_enable_stream( (pipe_ctx->stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK) ? true : false); + if (dc_is_lvds_signal(pipe_ctx->stream->signal)) + pipe_ctx->stream_res.stream_enc->funcs->lvds_set_stream_attribute( + pipe_ctx->stream_res.stream_enc, + &stream->timing); + resource_build_info_frame(pipe_ctx); core_dc->hwss.update_info_frame(pipe_ctx); diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c index eff7d22d78fb..0b3ec4cc901b 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c @@ -102,6 +102,7 @@ static const struct link_encoder_funcs dce110_lnk_enc_funcs = { .enable_tmds_output = dce110_link_encoder_enable_tmds_output, .enable_dp_output = dce110_link_encoder_enable_dp_output, .enable_dp_mst_output = dce110_link_encoder_enable_dp_mst_output, + .enable_lvds_output = dce110_link_encoder_enable_lvds_output, .disable_output = dce110_link_encoder_disable_output, .dp_set_lane_settings = dce110_link_encoder_dp_set_lane_settings, .dp_set_phy_pattern = dce110_link_encoder_dp_set_phy_pattern, @@ -955,6 +956,39 @@ void dce110_link_encoder_enable_tmds_output( } } +/* TODO: still need depth or just pass in adjusted pixel clock? */ +void dce110_link_encoder_enable_lvds_output( + struct link_encoder *enc, + enum clock_source_id clock_source, + enum signal_type signal, + uint32_t pixel_clock) +{ + struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc); + struct bp_transmitter_control cntl = { 0 }; + enum bp_result result; + + /* Enable the PHY */ + cntl.connector_obj_id = enc110->base.connector; + cntl.action = TRANSMITTER_CONTROL_ENABLE; + cntl.engine_id = enc->preferred_engine; + cntl.transmitter = enc110->base.transmitter; + cntl.pll_id = clock_source; + cntl.signal = signal; + cntl.lanes_number = 4; + + cntl.hpd_sel = enc110->base.hpd_source; + + cntl.pixel_clock = pixel_clock; + + result = link_transmitter_control(enc110, &cntl); + + if (result != BP_RESULT_OK) { + DC_LOG_ERROR("%s: Failed to execute VBIOS command table!\n", + __func__); + BREAK_TO_DEBUGGER(); + } +} + /* enables DP PHY output */ void dce110_link_encoder_enable_dp_output( struct link_encoder *enc, diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h index 347069461a22..087401bac13d 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h @@ -225,6 +225,13 @@ void dce110_link_encoder_enable_dp_mst_output( const struct dc_link_settings *link_settings, enum clock_source_id clock_source); +/* enables LVDS PHY output */ +void dce110_link_encoder_enable_lvds_output( + struct link_encoder *enc, + enum clock_source_id clock_source, + enum signal_type signal, + uint32_t pixel_clock); + /* disable PHY output */ void dce110_link_encoder_disable_output( struct link_encoder *enc, 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 b139b4017820..8fbe5211c68f 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 @@ -674,6 +674,29 @@ static void dce110_stream_encoder_dvi_set_stream_attribute( dce110_stream_encoder_set_stream_attribute_helper(enc110, crtc_timing); } +/* setup stream encoder in LVDS mode */ +static void dce110_stream_encoder_lvds_set_stream_attribute( + struct stream_encoder *enc, + struct dc_crtc_timing *crtc_timing) +{ + struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc); + struct bp_encoder_control cntl = {0}; + + cntl.action = ENCODER_CONTROL_SETUP; + cntl.engine_id = enc110->base.id; + cntl.signal = SIGNAL_TYPE_LVDS; + cntl.enable_dp_audio = false; + cntl.pixel_clock = crtc_timing->pix_clk_khz; + cntl.lanes_number = LANE_COUNT_FOUR; + + if (enc110->base.bp->funcs->encoder_control( + enc110->base.bp, &cntl) != BP_RESULT_OK) + return; + + ASSERT(crtc_timing->pixel_encoding == PIXEL_ENCODING_RGB); + ASSERT(crtc_timing->display_color_depth == COLOR_DEPTH_888); +} + static void dce110_stream_encoder_set_mst_bandwidth( struct stream_encoder *enc, struct fixed31_32 avg_time_slots_per_mtp) @@ -1564,6 +1587,8 @@ static const struct stream_encoder_funcs dce110_str_enc_funcs = { dce110_stream_encoder_hdmi_set_stream_attribute, .dvi_set_stream_attribute = dce110_stream_encoder_dvi_set_stream_attribute, + .lvds_set_stream_attribute = + dce110_stream_encoder_lvds_set_stream_attribute, .set_mst_bandwidth = dce110_stream_encoder_set_mst_bandwidth, .update_hdmi_info_packets = diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h index cf6df2e7beb2..881cc4079afe 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h @@ -131,6 +131,10 @@ struct link_encoder_funcs { void (*enable_dp_mst_output)(struct link_encoder *enc, const struct dc_link_settings *link_settings, enum clock_source_id clock_source); + void (*enable_lvds_output)(struct link_encoder *enc, + enum clock_source_id clock_source, + enum signal_type signal, + uint32_t pixel_clock); void (*disable_output)(struct link_encoder *link_enc, enum signal_type signal); void (*dp_set_lane_settings)(struct link_encoder *enc, diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h index cfa7ec9517ae..53a9b64df11a 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/stream_encoder.h @@ -101,6 +101,10 @@ struct stream_encoder_funcs { struct dc_crtc_timing *crtc_timing, bool is_dual_link); + void (*lvds_set_stream_attribute)( + struct stream_encoder *enc, + struct dc_crtc_timing *crtc_timing); + void (*set_mst_bandwidth)( struct stream_encoder *enc, struct fixed31_32 avg_time_slots_per_mtp); diff --git a/drivers/gpu/drm/amd/display/include/signal_types.h b/drivers/gpu/drm/amd/display/include/signal_types.h index 199c5db67cbc..03476b142d8e 100644 --- a/drivers/gpu/drm/amd/display/include/signal_types.h +++ b/drivers/gpu/drm/amd/display/include/signal_types.h @@ -68,6 +68,11 @@ static inline bool dc_is_embedded_signal(enum signal_type signal) return (signal == SIGNAL_TYPE_EDP || signal == SIGNAL_TYPE_LVDS); } +static inline bool dc_is_lvds_signal(enum signal_type signal) +{ + return (signal == SIGNAL_TYPE_LVDS); +} + static inline bool dc_is_dvi_signal(enum signal_type signal) { switch (signal) { -- 2.13.6