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drm/amd/display: Enable DAC in DCE link encoder

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Ensure that the DAC output is enabled at the correct time by
moving it to the DCE link encoder similarly to how digital
outputs are enabled.

This also removes the call to DAC1EncoderControl from the DCE
HWSS, which always felt like it was a hacky solution.

Fixes: 0fbe321a93 ("drm/amd/display: Implement DCE analog link encoders (v2)")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Tested-by: Mauro Rossi <issor.oruam@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf
2026-02-02 12:25:07 +01:00
committed by Alex Deucher
parent cbced93894
commit 4bd8b5f8bc
6 changed files with 50 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+18
View File
@@ -102,6 +102,7 @@ static const struct link_encoder_funcs dce110_lnk_enc_funcs = {
.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,
.enable_analog_output = dce110_link_encoder_enable_analog_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,
@@ -1200,6 +1201,22 @@ void dce110_link_encoder_enable_lvds_output(
}
}
void dce110_link_encoder_enable_analog_output(
struct link_encoder *enc,
uint32_t pixel_clock)
{
struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
enum bp_result result;
result = link_dac_encoder_control(enc110, ENCODER_CONTROL_ENABLE, pixel_clock);
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,
@@ -1818,6 +1835,7 @@ static const struct link_encoder_funcs dce60_lnk_enc_funcs = {
.enable_dp_output = dce60_link_encoder_enable_dp_output,
.enable_dp_mst_output = dce60_link_encoder_enable_dp_mst_output,
.enable_lvds_output = dce110_link_encoder_enable_lvds_output,
.enable_analog_output = dce110_link_encoder_enable_analog_output,
.disable_output = dce110_link_encoder_disable_output,
.dp_set_lane_settings = dce110_link_encoder_dp_set_lane_settings,
.dp_set_phy_pattern = dce60_link_encoder_dp_set_phy_pattern,
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
+5
View File
@@ -268,6 +268,11 @@ void dce110_link_encoder_enable_lvds_output(
enum clock_source_id clock_source,
uint32_t pixel_clock);
/* enables analog output from the DAC */
void dce110_link_encoder_enable_analog_output(
struct link_encoder *enc,
uint32_t pixel_clock);
/* disable PHY output */
void dce110_link_encoder_disable_output(
struct link_encoder *enc,
drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
+10 -16
View File
@@ -660,20 +660,6 @@ void dce110_update_info_frame(struct pipe_ctx *pipe_ctx)
}
}
static void
dce110_dac_encoder_control(struct pipe_ctx *pipe_ctx, bool enable)
{
struct dc_link *link = pipe_ctx->stream->link;
struct dc_bios *bios = link->ctx->dc_bios;
struct bp_encoder_control encoder_control = {0};
encoder_control.action = enable ? ENCODER_CONTROL_ENABLE : ENCODER_CONTROL_DISABLE;
encoder_control.engine_id = link->link_enc->analog_engine;
encoder_control.pixel_clock = pipe_ctx->stream->timing.pix_clk_100hz / 10;
bios->funcs->encoder_control(bios, &encoder_control);
}
void dce110_enable_stream(struct pipe_ctx *pipe_ctx)
{
enum dc_lane_count lane_count =
@@ -704,8 +690,6 @@ void dce110_enable_stream(struct pipe_ctx *pipe_ctx)
tg->funcs->set_early_control(tg, early_control);
if (dc_is_rgb_signal(pipe_ctx->stream->signal))
dce110_dac_encoder_control(pipe_ctx, true);
}
static enum bp_result link_transmitter_control(
@@ -3277,6 +3261,15 @@ void dce110_enable_tmds_link_output(struct dc_link *link,
link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
static void dce110_enable_analog_link_output(
struct dc_link *link,
uint32_t pix_clk_100hz)
{
link->link_enc->funcs->enable_analog_output(
link->link_enc,
pix_clk_100hz);
}
void dce110_enable_dp_link_output(
struct dc_link *link,
const struct link_resource *link_res,
@@ -3414,6 +3407,7 @@ static const struct hw_sequencer_funcs dce110_funcs = {
.enable_lvds_link_output = dce110_enable_lvds_link_output,
.enable_tmds_link_output = dce110_enable_tmds_link_output,
.enable_dp_link_output = dce110_enable_dp_link_output,
.enable_analog_link_output = dce110_enable_analog_link_output,
.disable_link_output = dce110_disable_link_output,
};
drivers/gpu/drm/amd/display/dc/hwss/hw_sequencer.h
+2
View File
@@ -1184,6 +1184,8 @@ struct hw_sequencer_funcs {
const struct link_resource *link_res,
enum clock_source_id clock_source,
uint32_t pixel_clock);
void (*enable_analog_link_output)(struct dc_link *link,
uint32_t pixel_clock);
void (*disable_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
+2
View File
@@ -132,6 +132,8 @@ struct link_encoder_funcs {
void (*enable_lvds_output)(struct link_encoder *enc,
enum clock_source_id clock_source,
uint32_t pixel_clock);
void (*enable_analog_output)(struct link_encoder *enc,
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,
drivers/gpu/drm/amd/display/dc/link/link_dpms.c
+13 -1
View File
@@ -2155,6 +2155,18 @@ static enum dc_status enable_link_dp_mst(
return enable_link_dp(state, pipe_ctx);
}
static enum dc_status enable_link_analog(
struct dc_state *state,
struct pipe_ctx *pipe_ctx)
{
struct dc_link *link = pipe_ctx->stream->link;
link->dc->hwss.enable_analog_link_output(
link, pipe_ctx->stream->timing.pix_clk_100hz);
return DC_OK;
}
static enum dc_status enable_link_virtual(struct pipe_ctx *pipe_ctx)
{
struct dc_link *link = pipe_ctx->stream->link;
@@ -2210,7 +2222,7 @@ static enum dc_status enable_link(
status = DC_OK;
break;
case SIGNAL_TYPE_RGB:
status = DC_OK;
status = enable_link_analog(state, pipe_ctx);
break;
case SIGNAL_TYPE_VIRTUAL:
status = enable_link_virtual(pipe_ctx);