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drm/amd/display: rework recent update PHY state commit

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[why]
Original change 594b237b9a ("drm/amd/display: Add
interface to track PHY state") was implemented by assuming stream's
dpms off is equivalent to PHY power off.
This assumption doesn't hold in following situations:
1. MST multiple stream scenario, where multiple streams are sharing the
same PHY output. Toggle dpms off for one of the stream doesn't power
off the PHY due to the presence of other streams.
2. enable stream failure scenario, where enable stream fails due to
failure of link training. This will cause DPMS off is set to false, while
the actual PHY power state is off in certain cases.
Due to the problematic assumption, the logic will skip disabling
other streams for MST multiple stream scenario, therefore PHY is
not actually powered off.

[how]
1. Rework this refactor by moving PHY state update down to hardware
level, where we update PHY state in place when hardware sequencer
is actually changing the power state of the PHY hardware.
2. Reimplement symclk on TX off workaround in place when we are actually
calling transmitter control to power off PHY in dcn32. Note the workaround is
added due to the lack of proper software interface to set TX while keeping
symclk on. We plan to address this interface problem so we can set TX off
only without affecting symclk in future dcn versions.

Fixes: 594b237b9a ("drm/amd/display: Add interface to track PHY state")
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2022-08-31 14:56:46 -04:00 committed by Alex Deucher
parent 10faf07871
commit 9c75891fee
28 changed files with 356 additions and 176 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
drivers/gpu/drm/amd/display/dc/core/dc.c
View file

@ -1184,11 +1184,7 @@ static void disable_vbios_mode_if_required(
pipe->stream_res.pix_clk_params.requested_pix_clk_100hz;
if (pix_clk_100hz != requested_pix_clk_100hz) {
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(dc->current_state,
pipe, TX_OFF_SYMCLK_OFF);
else
core_link_disable_stream(pipe);
core_link_disable_stream(pipe);
pipe->stream->dpms_off = false;
}
}
@ -3061,11 +3057,7 @@ static void commit_planes_do_stream_update(struct dc *dc,
if (stream_update->dpms_off) {
if (*stream_update->dpms_off) {
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(dc->current_state,
pipe_ctx, TX_OFF_SYMCLK_ON);
else
core_link_disable_stream(pipe_ctx);
core_link_disable_stream(pipe_ctx);
/* for dpms, keep acquired resources*/
if (pipe_ctx->stream_res.audio && !dc->debug.az_endpoint_mute_only)
pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
@ -3075,12 +3067,7 @@ static void commit_planes_do_stream_update(struct dc *dc,
} else {
if (get_seamless_boot_stream_count(context) == 0)
dc->hwss.prepare_bandwidth(dc, dc->current_state);
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(dc->current_state,
pipe_ctx, TX_ON_SYMCLK_ON);
else
core_link_enable_stream(dc->current_state, pipe_ctx);
core_link_enable_stream(dc->current_state, pipe_ctx);
}
}

20
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View file

@ -2644,9 +2644,8 @@ static void disable_link(struct dc_link *link, const struct link_resource *link_
dp_set_fec_ready(link, link_res, false);
}
}
} else {
if (signal != SIGNAL_TYPE_VIRTUAL)
link->link_enc->funcs->disable_output(link->link_enc, signal);
} else if (signal != SIGNAL_TYPE_VIRTUAL) {
link->dc->hwss.disable_link_output(link, link_res, signal);
}
if (signal == SIGNAL_TYPE_DISPLAY_PORT_MST) {
@ -2668,6 +2667,7 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
bool is_over_340mhz = false;
bool is_vga_mode = (stream->timing.h_addressable == 640)
&& (stream->timing.v_addressable == 480);
struct dc *dc = pipe_ctx->stream->ctx->dc;
if (stream->phy_pix_clk == 0)
stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
@ -2707,11 +2707,12 @@ static void enable_link_hdmi(struct pipe_ctx *pipe_ctx)
if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR422)
display_color_depth = COLOR_DEPTH_888;
link->link_enc->funcs->enable_tmds_output(
link->link_enc,
dc->hwss.enable_tmds_link_output(
link,
&pipe_ctx->link_res,
pipe_ctx->stream->signal,
pipe_ctx->clock_source->id,
display_color_depth,
pipe_ctx->stream->signal,
stream->phy_pix_clk);
if (dc_is_hdmi_signal(pipe_ctx->stream->signal))
@ -2722,15 +2723,16 @@ static void enable_link_lvds(struct pipe_ctx *pipe_ctx)
{
struct dc_stream_state *stream = pipe_ctx->stream;
struct dc_link *link = stream->link;
struct dc *dc = stream->ctx->dc;
if (stream->phy_pix_clk == 0)
stream->phy_pix_clk = stream->timing.pix_clk_100hz / 10;
memset(&stream->link->cur_link_settings, 0,
sizeof(struct dc_link_settings));
link->link_enc->funcs->enable_lvds_output(
link->link_enc,
dc->hwss.enable_lvds_link_output(
link,
&pipe_ctx->link_res,
pipe_ctx->clock_source->id,
stream->phy_pix_clk);

96
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
View file

@ -4518,25 +4518,15 @@ void dc_link_dp_handle_link_loss(struct dc_link *link)
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off &&
pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) {
if (link->dc->hwss.update_phy_state)
link->dc->hwss.update_phy_state(link->dc->current_state,
pipe_ctx, TX_OFF_SYMCLK_OFF);
else
core_link_disable_stream(pipe_ctx);
}
pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
core_link_disable_stream(pipe_ctx);
}
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &link->dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx && pipe_ctx->stream && !pipe_ctx->stream->dpms_off &&
pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe) {
if (link->dc->hwss.update_phy_state)
link->dc->hwss.update_phy_state(link->dc->current_state,
pipe_ctx, TX_ON_SYMCLK_ON);
else
core_link_enable_stream(link->dc->current_state, pipe_ctx);
}
pipe_ctx->stream->link == link && !pipe_ctx->prev_odm_pipe)
core_link_enable_stream(link->dc->current_state, pipe_ctx);
}
}
@ -7077,60 +7067,9 @@ void dp_enable_link_phy(
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings)
{
struct dc *dc = link->ctx->dc;
struct dmcu *dmcu = dc->res_pool->dmcu;
struct pipe_ctx *pipes =
link->dc->current_state->res_ctx.pipe_ctx;
struct clock_source *dp_cs =
link->dc->res_pool->dp_clock_source;
const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
unsigned int i;
if (link->connector_signal == SIGNAL_TYPE_EDP) {
if (!link->dc->config.edp_no_power_sequencing)
link->dc->hwss.edp_power_control(link, true);
link->dc->hwss.edp_wait_for_hpd_ready(link, true);
}
/* If the current pixel clock source is not DTO(happens after
* switching from HDMI passive dongle to DP on the same connector),
* switch the pixel clock source to DTO.
*/
for (i = 0; i < MAX_PIPES; i++) {
if (pipes[i].stream != NULL &&
pipes[i].stream->link == link) {
if (pipes[i].clock_source != NULL &&
pipes[i].clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
pipes[i].clock_source = dp_cs;
pipes[i].stream_res.pix_clk_params.requested_pix_clk_100hz =
pipes[i].stream->timing.pix_clk_100hz;
pipes[i].clock_source->funcs->program_pix_clk(
pipes[i].clock_source,
&pipes[i].stream_res.pix_clk_params,
dp_get_link_encoding_format(link_settings),
&pipes[i].pll_settings);
}
}
}
link->dc->hwss.enable_dp_link_output(link, link_res, signal,
clock_source, link_settings);
link->cur_link_settings = *link_settings;
if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING) {
if (dc->clk_mgr->funcs->notify_link_rate_change)
dc->clk_mgr->funcs->notify_link_rate_change(dc->clk_mgr, link);
}
if (dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->lock_phy(dmcu);
if (link_hwss->ext.enable_dp_link_output)
link_hwss->ext.enable_dp_link_output(link, link_res, signal,
clock_source, link_settings);
if (dmcu != NULL && dmcu->funcs->unlock_phy)
dmcu->funcs->unlock_phy(dmcu);
dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_LINK_PHY);
dp_receiver_power_ctrl(link, true);
}
@ -7205,29 +7144,8 @@ void dp_disable_link_phy(struct dc_link *link, const struct link_resource *link_
enum signal_type signal)
{
struct dc *dc = link->ctx->dc;
struct dmcu *dmcu = dc->res_pool->dmcu;
const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
if (!link->wa_flags.dp_keep_receiver_powered)
dp_receiver_power_ctrl(link, false);
if (signal == SIGNAL_TYPE_EDP) {
if (link->dc->hwss.edp_backlight_control)
link->dc->hwss.edp_backlight_control(link, false);
if (link_hwss->ext.disable_dp_link_output)
link_hwss->ext.disable_dp_link_output(link, link_res, signal);
link->dc->hwss.edp_power_control(link, false);
} else {
if (dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->lock_phy(dmcu);
if (link_hwss->ext.disable_dp_link_output)
link_hwss->ext.disable_dp_link_output(link, link_res, signal);
if (dmcu != NULL && dmcu->funcs->unlock_phy)
dmcu->funcs->unlock_phy(dmcu);
}
dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISABLE_LINK_PHY);
dc->hwss.disable_link_output(link, link_res, signal);
/* Clear current link setting.*/
memset(&link->cur_link_settings, 0,
sizeof(link->cur_link_settings));

2
drivers/gpu/drm/amd/display/dc/dc_link.h
View file

@ -244,7 +244,7 @@ struct dc_link {
struct gpio *hpd_gpio;
enum dc_link_fec_state fec_state;
struct dc_panel_config panel_config;
enum phy_state phy_state;
struct phy_state phy_state;
};
const struct dc_link_status *dc_link_get_status(const struct dc_link *dc_link);

137
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
View file

@ -1441,6 +1441,14 @@ static enum dc_status dce110_enable_stream_timing(
return DC_ERROR_UNEXPECTED;
}
if (dc_is_hdmi_tmds_signal(stream->signal)) {
stream->link->phy_state.symclk_ref_cnts.otg = 1;
if (stream->link->phy_state.symclk_state == SYMCLK_OFF_TX_OFF)
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_OFF;
else
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
pipe_ctx->stream_res.tg->funcs->program_timing(
pipe_ctx->stream_res.tg,
&stream->timing,
@ -1577,12 +1585,8 @@ static enum dc_status apply_single_controller_ctx_to_hw(
if (dc_is_dp_signal(pipe_ctx->stream->signal))
dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_CONNECT_DIG_FE_OTG);
if (!stream->dpms_off) {
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(context, pipe_ctx, TX_ON_SYMCLK_ON);
else
core_link_enable_stream(context, pipe_ctx);
}
if (!stream->dpms_off)
core_link_enable_stream(context, pipe_ctx);
/* DCN3.1 FPGA Workaround
* Need to enable HPO DP Stream Encoder before setting OTG master enable.
@ -2118,6 +2122,7 @@ static void dce110_reset_hw_ctx_wrap(
BREAK_TO_DEBUGGER();
}
pipe_ctx_old->stream_res.tg->funcs->disable_crtc(pipe_ctx_old->stream_res.tg);
pipe_ctx_old->stream->link->phy_state.symclk_ref_cnts.otg = 0;
pipe_ctx_old->plane_res.mi->funcs->free_mem_input(
pipe_ctx_old->plane_res.mi, dc->current_state->stream_count);
@ -2996,6 +3001,122 @@ void dce110_set_pipe(struct pipe_ctx *pipe_ctx)
abm->funcs->set_pipe(abm, otg_inst, panel_cntl->inst);
}
void dce110_enable_lvds_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum clock_source_id clock_source,
uint32_t pixel_clock)
{
link->link_enc->funcs->enable_lvds_output(
link->link_enc,
clock_source,
pixel_clock);
link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
void dce110_enable_tmds_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
enum dc_color_depth color_depth,
uint32_t pixel_clock)
{
link->link_enc->funcs->enable_tmds_output(
link->link_enc,
clock_source,
color_depth,
signal,
pixel_clock);
link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
void dce110_enable_dp_link_output(
struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings)
{
struct dc *dc = link->ctx->dc;
struct dmcu *dmcu = dc->res_pool->dmcu;
struct pipe_ctx *pipes =
link->dc->current_state->res_ctx.pipe_ctx;
struct clock_source *dp_cs =
link->dc->res_pool->dp_clock_source;
const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
unsigned int i;
if (link->connector_signal == SIGNAL_TYPE_EDP) {
if (!link->dc->config.edp_no_power_sequencing)
link->dc->hwss.edp_power_control(link, true);
link->dc->hwss.edp_wait_for_hpd_ready(link, true);
}
/* If the current pixel clock source is not DTO(happens after
* switching from HDMI passive dongle to DP on the same connector),
* switch the pixel clock source to DTO.
*/
for (i = 0; i < MAX_PIPES; i++) {
if (pipes[i].stream != NULL &&
pipes[i].stream->link == link) {
if (pipes[i].clock_source != NULL &&
pipes[i].clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
pipes[i].clock_source = dp_cs;
pipes[i].stream_res.pix_clk_params.requested_pix_clk_100hz =
pipes[i].stream->timing.pix_clk_100hz;
pipes[i].clock_source->funcs->program_pix_clk(
pipes[i].clock_source,
&pipes[i].stream_res.pix_clk_params,
dp_get_link_encoding_format(link_settings),
&pipes[i].pll_settings);
}
}
}
if (dp_get_link_encoding_format(link_settings) == DP_8b_10b_ENCODING) {
if (dc->clk_mgr->funcs->notify_link_rate_change)
dc->clk_mgr->funcs->notify_link_rate_change(dc->clk_mgr, link);
}
if (dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->lock_phy(dmcu);
if (link_hwss->ext.enable_dp_link_output)
link_hwss->ext.enable_dp_link_output(link, link_res, signal,
clock_source, link_settings);
link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
if (dmcu != NULL && dmcu->funcs->unlock_phy)
dmcu->funcs->unlock_phy(dmcu);
}
void dce110_disable_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal)
{
struct dc *dc = link->ctx->dc;
const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
struct dmcu *dmcu = dc->res_pool->dmcu;
if (signal == SIGNAL_TYPE_EDP &&
link->dc->hwss.edp_backlight_control)
link->dc->hwss.edp_backlight_control(link, false);
else if (dc_is_dp_signal(signal) && dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->lock_phy(dmcu);
link_hwss->disable_link_output(link, link_res, signal);
link->phy_state.symclk_state = SYMCLK_OFF_TX_OFF;
if (signal == SIGNAL_TYPE_EDP &&
link->dc->hwss.edp_backlight_control)
link->dc->hwss.edp_power_control(link, false);
else if (dc_is_dp_signal(signal) && dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->unlock_phy(dmcu);
}
static const struct hw_sequencer_funcs dce110_funcs = {
.program_gamut_remap = program_gamut_remap,
.program_output_csc = program_output_csc,
@ -3035,6 +3156,10 @@ static const struct hw_sequencer_funcs dce110_funcs = {
.set_backlight_level = dce110_set_backlight_level,
.set_abm_immediate_disable = dce110_set_abm_immediate_disable,
.set_pipe = dce110_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
};
static const struct hwseq_private_funcs dce110_private_funcs = {

20
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.h
View file

@ -90,6 +90,24 @@ bool dce110_set_backlight_level(struct pipe_ctx *pipe_ctx,
uint32_t frame_ramp);
void dce110_set_abm_immediate_disable(struct pipe_ctx *pipe_ctx);
void dce110_set_pipe(struct pipe_ctx *pipe_ctx);
void dce110_disable_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
void dce110_enable_lvds_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum clock_source_id clock_source,
uint32_t pixel_clock);
void dce110_enable_tmds_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
enum dc_color_depth color_depth,
uint32_t pixel_clock);
void dce110_enable_dp_link_output(
struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings);
#endif /* __DC_HWSS_DCE110_H__ */

9
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View file

@ -899,6 +899,14 @@ enum dc_status dcn10_enable_stream_timing(
return DC_ERROR_UNEXPECTED;
}
if (dc_is_hdmi_tmds_signal(stream->signal)) {
stream->link->phy_state.symclk_ref_cnts.otg = 1;
if (stream->link->phy_state.symclk_state == SYMCLK_OFF_TX_OFF)
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_OFF;
else
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
pipe_ctx->stream_res.tg->funcs->program_timing(
pipe_ctx->stream_res.tg,
&stream->timing,
@ -1017,6 +1025,7 @@ static void dcn10_reset_back_end_for_pipe(
if (pipe_ctx->stream_res.tg->funcs->set_drr)
pipe_ctx->stream_res.tg->funcs->set_drr(
pipe_ctx->stream_res.tg, NULL);
pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0;
}
for (i = 0; i < dc->res_pool->pipe_count; i++)

4
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c
View file

@ -82,6 +82,10 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
.set_backlight_level = dce110_set_backlight_level,
.set_abm_immediate_disable = dce110_set_abm_immediate_disable,
.set_pipe = dce110_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,
.update_visual_confirm_color = dcn10_update_visual_confirm_color,
};

32
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
View file

@ -706,6 +706,14 @@ enum dc_status dcn20_enable_stream_timing(
return DC_ERROR_UNEXPECTED;
}
if (dc_is_hdmi_tmds_signal(stream->signal)) {
stream->link->phy_state.symclk_ref_cnts.otg = 1;
if (stream->link->phy_state.symclk_state == SYMCLK_OFF_TX_OFF)
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_OFF;
else
stream->link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
}
if (dc->hwseq->funcs.PLAT_58856_wa && (!dc_is_dp_signal(stream->signal)))
dc->hwseq->funcs.PLAT_58856_wa(context, pipe_ctx);
@ -2349,7 +2357,9 @@ static void dcn20_reset_back_end_for_pipe(
struct dc_state *context)
{
int i;
struct dc_link *link;
struct dc_link *link = pipe_ctx->stream->link;
const struct link_hwss *link_hwss = get_link_hwss(link, &pipe_ctx->link_res);
DC_LOGGER_INIT(dc->ctx->logger);
if (pipe_ctx->stream_res.stream_enc == NULL) {
pipe_ctx->stream = NULL;
@ -2357,19 +2367,15 @@ static void dcn20_reset_back_end_for_pipe(
}
if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
link = pipe_ctx->stream->link;
/* DPMS may already disable or */
/* dpms_off status is incorrect due to fastboot
* feature. When system resume from S4 with second
* screen only, the dpms_off would be true but
* VBIOS lit up eDP, so check link status too.
*/
if (!pipe_ctx->stream->dpms_off || link->link_status.link_active) {
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(dc->current_state, pipe_ctx, TX_OFF_SYMCLK_OFF);
else
core_link_disable_stream(pipe_ctx);
} else if (pipe_ctx->stream_res.audio)
if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
core_link_disable_stream(pipe_ctx);
else if (pipe_ctx->stream_res.audio)
dc->hwss.disable_audio_stream(pipe_ctx);
/* free acquired resources */
@ -2409,6 +2415,16 @@ static void dcn20_reset_back_end_for_pipe(
if (pipe_ctx->stream_res.tg->funcs->set_drr)
pipe_ctx->stream_res.tg->funcs->set_drr(
pipe_ctx->stream_res.tg, NULL);
/* TODO - convert symclk_ref_cnts for otg to a bit map to solve
* the case where the same symclk is shared across multiple otg
* instances
*/
link->phy_state.symclk_ref_cnts.otg = 0;
if (link->phy_state.symclk_state == SYMCLK_ON_TX_OFF) {
link_hwss->disable_link_output(link,
&pipe_ctx->link_res, pipe_ctx->stream->signal);
link->phy_state.symclk_state = SYMCLK_OFF_TX_OFF;
}
}
for (i = 0; i < dc->res_pool->pipe_count; i++)

4
drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
View file

@ -96,6 +96,10 @@ static const struct hw_sequencer_funcs dcn20_funcs = {
#ifndef TRIM_FSFT
.optimize_timing_for_fsft = dcn20_optimize_timing_for_fsft,
#endif
.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,
.disable_link_output = dce110_disable_link_output,
.set_disp_pattern_generator = dcn20_set_disp_pattern_generator,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,
.update_visual_confirm_color = dcn20_update_visual_confirm_color

4
drivers/gpu/drm/amd/display/dc/dcn201/dcn201_init.c
View file

@ -86,6 +86,10 @@ static const struct hw_sequencer_funcs dcn201_funcs = {
.set_backlight_level = dce110_set_backlight_level,
.set_abm_immediate_disable = dce110_set_abm_immediate_disable,
.set_pipe = dce110_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.set_disp_pattern_generator = dcn20_set_disp_pattern_generator,
.update_visual_confirm_color = dcn20_update_visual_confirm_color,
};

4
drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c
View file

@ -99,6 +99,10 @@ static const struct hw_sequencer_funcs dcn21_funcs = {
#ifndef TRIM_FSFT
.optimize_timing_for_fsft = dcn20_optimize_timing_for_fsft,
#endif
.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,
.disable_link_output = dce110_disable_link_output,
.is_abm_supported = dcn21_is_abm_supported,
.set_disp_pattern_generator = dcn20_set_disp_pattern_generator,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,

4
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_init.c
View file

@ -100,6 +100,10 @@ static const struct hw_sequencer_funcs dcn30_funcs = {
.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
.hardware_release = dcn30_hardware_release,
.set_pipe = dcn21_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,
.update_visual_confirm_color = dcn20_update_visual_confirm_color,

4
drivers/gpu/drm/amd/display/dc/dcn301/dcn301_init.c
View file

@ -99,6 +99,10 @@ static const struct hw_sequencer_funcs dcn301_funcs = {
.set_backlight_level = dcn21_set_backlight_level,
.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
.set_pipe = dcn21_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,
.optimize_pwr_state = dcn21_optimize_pwr_state,

11
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
View file

@ -535,11 +535,11 @@ static void dcn31_reset_back_end_for_pipe(
pipe_ctx->stream_res.tg,
OPTC_DSC_DISABLED, 0, 0);
pipe_ctx->stream_res.tg->funcs->disable_crtc(pipe_ctx->stream_res.tg);
pipe_ctx->stream_res.tg->funcs->enable_optc_clock(pipe_ctx->stream_res.tg, false);
if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass)
pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
pipe_ctx->stream->link->phy_state.symclk_ref_cnts.otg = 0;
if (pipe_ctx->stream_res.tg->funcs->set_drr)
pipe_ctx->stream_res.tg->funcs->set_drr(
@ -553,12 +553,9 @@ static void dcn31_reset_back_end_for_pipe(
* screen only, the dpms_off would be true but
* VBIOS lit up eDP, so check link status too.
*/
if (!pipe_ctx->stream->dpms_off || link->link_status.link_active) {
if (dc->hwss.update_phy_state)
dc->hwss.update_phy_state(dc->current_state, pipe_ctx, TX_OFF_SYMCLK_OFF);
else
core_link_disable_stream(pipe_ctx);
} else if (pipe_ctx->stream_res.audio)
if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
core_link_disable_stream(pipe_ctx);
else if (pipe_ctx->stream_res.audio)
dc->hwss.disable_audio_stream(pipe_ctx);
/* free acquired resources */

4
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_init.c
View file

@ -100,6 +100,10 @@ static const struct hw_sequencer_funcs dcn31_funcs = {
.set_backlight_level = dcn21_set_backlight_level,
.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
.set_pipe = dcn21_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.z10_restore = dcn31_z10_restore,
.z10_save_init = dcn31_z10_save_init,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,

4
drivers/gpu/drm/amd/display/dc/dcn314/dcn314_init.c
View file

@ -102,6 +102,10 @@ static const struct hw_sequencer_funcs dcn314_funcs = {
.set_backlight_level = dcn21_set_backlight_level,
.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
.set_pipe = dcn21_set_pipe,
.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,
.disable_link_output = dce110_disable_link_output,
.z10_restore = dcn31_z10_restore,
.z10_save_init = dcn31_z10_save_init,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,

81
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
View file

@ -883,6 +883,7 @@ void dcn32_init_hw(struct dc *dc)
if (link->link_enc->funcs->is_dig_enabled &&
link->link_enc->funcs->is_dig_enabled(link->link_enc)) {
link->link_status.link_active = true;
link->phy_state.symclk_state = SYMCLK_ON_TX_ON;
if (link->link_enc->funcs->fec_is_active &&
link->link_enc->funcs->fec_is_active(link->link_enc))
link->fec_state = dc_link_fec_enabled;
@ -1275,31 +1276,69 @@ bool dcn32_is_dp_dig_pixel_rate_div_policy(struct pipe_ctx *pipe_ctx)
return false;
}
void dcn32_update_phy_state(struct dc_state *state, struct pipe_ctx *pipe_ctx,
enum phy_state target_state)
static void apply_symclk_on_tx_off_wa(struct dc_link *link)
{
enum phy_state current_state = pipe_ctx->stream->link->phy_state;
/* There are use cases where SYMCLK is referenced by OTG. For instance
* for TMDS signal, OTG relies SYMCLK even if TX video output is off.
* However current link interface will power off PHY when disabling link
* output. This will turn off SYMCLK generated by PHY. The workaround is
* to identify such case where SYMCLK is still in use by OTG when we
* power off PHY. When this is detected, we will temporarily power PHY
* back on and move PHY's SYMCLK state to SYMCLK_ON_TX_OFF by calling
* program_pix_clk interface. When OTG is disabled, we will then power
* off PHY by calling disable link output again.
*
* In future dcn generations, we plan to rework transmitter control
* interface so that we could have an option to set SYMCLK ON TX OFF
* state in one step without this workaround
*/
if (target_state == TX_OFF_SYMCLK_OFF) {
core_link_disable_stream(pipe_ctx);
pipe_ctx->stream->link->phy_state = TX_OFF_SYMCLK_OFF;
} else if (target_state == TX_ON_SYMCLK_ON) {
core_link_enable_stream(state, pipe_ctx);
pipe_ctx->stream->link->phy_state = TX_ON_SYMCLK_ON;
} else if (target_state == TX_OFF_SYMCLK_ON) {
if (current_state == TX_ON_SYMCLK_ON) {
core_link_disable_stream(pipe_ctx);
pipe_ctx->stream->link->phy_state = TX_OFF_SYMCLK_OFF;
struct dc *dc = link->ctx->dc;
struct pipe_ctx *pipe_ctx = NULL;
uint8_t i;
if (link->phy_state.symclk_ref_cnts.otg > 0) {
for (i = 0; i < MAX_PIPES; i++) {
pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
if (pipe_ctx->stream->link == link && pipe_ctx->top_pipe == NULL) {
pipe_ctx->clock_source->funcs->program_pix_clk(
pipe_ctx->clock_source,
&pipe_ctx->stream_res.pix_clk_params,
dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
&pipe_ctx->pll_settings);
link->phy_state.symclk_state = SYMCLK_ON_TX_OFF;
break;
}
}
}
}
pipe_ctx->clock_source->funcs->program_pix_clk(
pipe_ctx->clock_source,
&pipe_ctx->stream_res.pix_clk_params,
dp_get_link_encoding_format(&pipe_ctx->link_config.dp_link_settings),
&pipe_ctx->pll_settings);
pipe_ctx->stream->link->phy_state = TX_OFF_SYMCLK_ON;
} else
BREAK_TO_DEBUGGER();
void dcn32_disable_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal)
{
struct dc *dc = link->ctx->dc;
const struct link_hwss *link_hwss = get_link_hwss(link, link_res);
struct dmcu *dmcu = dc->res_pool->dmcu;
if (signal == SIGNAL_TYPE_EDP &&
link->dc->hwss.edp_backlight_control)
link->dc->hwss.edp_backlight_control(link, false);
else if (dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->lock_phy(dmcu);
link_hwss->disable_link_output(link, link_res, signal);
link->phy_state.symclk_state = SYMCLK_OFF_TX_OFF;
if (signal == SIGNAL_TYPE_EDP &&
link->dc->hwss.edp_backlight_control)
link->dc->hwss.edp_power_control(link, false);
else if (dmcu != NULL && dmcu->funcs->lock_phy)
dmcu->funcs->unlock_phy(dmcu);
dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_DISABLE_LINK_PHY);
apply_symclk_on_tx_off_wa(link);
}
/* For SubVP the main pipe can have a viewport position change

5
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.h
View file

@ -84,8 +84,9 @@ void dcn32_unblank_stream(struct pipe_ctx *pipe_ctx,
bool dcn32_is_dp_dig_pixel_rate_div_policy(struct pipe_ctx *pipe_ctx);
void dcn32_update_phy_state(struct dc_state *state, struct pipe_ctx *pipe_ctx,
enum phy_state target_state);
void dcn32_disable_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
void dcn32_update_phantom_vp_position(struct dc *dc,
struct dc_state *context,

5
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_init.c
View file

@ -99,12 +99,15 @@ static const struct hw_sequencer_funcs dcn32_funcs = {
.set_abm_immediate_disable = dcn21_set_abm_immediate_disable,
.hardware_release = dcn30_hardware_release,
.set_pipe = dcn21_set_pipe,
.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,
.disable_link_output = dcn32_disable_link_output,
.set_disp_pattern_generator = dcn30_set_disp_pattern_generator,
.get_dcc_en_bits = dcn10_get_dcc_en_bits,
.commit_subvp_config = dcn32_commit_subvp_config,
.subvp_pipe_control_lock = dcn32_subvp_pipe_control_lock,
.update_visual_confirm_color = dcn20_update_visual_confirm_color,
.update_phy_state = dcn32_update_phy_state,
.update_phantom_vp_position = dcn32_update_phantom_vp_position,
};

16
drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h
View file

@ -268,10 +268,18 @@ enum dc_lut_mode {
LUT_RAM_B
};
enum phy_state {
TX_OFF_SYMCLK_OFF,
TX_ON_SYMCLK_ON,
TX_OFF_SYMCLK_ON
enum symclk_state {
SYMCLK_OFF_TX_OFF,
SYMCLK_ON_TX_ON,
SYMCLK_ON_TX_OFF,
};
struct phy_state {
struct {
uint8_t otg : 1;
uint8_t reserved : 7;
} symclk_ref_cnts;
enum symclk_state symclk_state;
};
/**

23
drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
View file

@ -48,6 +48,7 @@ struct dc_phy_addr_space_config;
struct dc_virtual_addr_space_config;
struct dpp;
struct dce_hwseq;
struct link_resource;
struct hw_sequencer_funcs {
void (*hardware_release)(struct dc *dc);
@ -218,6 +219,25 @@ struct hw_sequencer_funcs {
void (*set_pipe)(struct pipe_ctx *pipe_ctx);
void (*enable_dp_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings);
void (*enable_tmds_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal,
enum clock_source_id clock_source,
enum dc_color_depth color_depth,
uint32_t pixel_clock);
void (*enable_lvds_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum clock_source_id clock_source,
uint32_t pixel_clock);
void (*disable_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
void (*get_dcc_en_bits)(struct dc *dc, int *dcc_en_bits);
/* Idle Optimization Related */
@ -245,9 +265,6 @@ struct hw_sequencer_funcs {
struct tg_color *color,
int mpcc_id);
void (*update_phy_state)(struct dc_state *state, struct pipe_ctx *pipe_ctx, enum phy_state target_state);
void (*update_phantom_vp_position)(struct dc *dc,
struct dc_state *context,
struct pipe_ctx *phantom_pipe);

6
drivers/gpu/drm/amd/display/dc/inc/link_hwss.h
View file

@ -55,9 +55,6 @@ struct link_hwss_ext {
enum signal_type signal,
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings);
void (*disable_dp_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
void (*set_dp_link_test_pattern)(struct dc_link *link,
const struct link_resource *link_res,
struct encoder_set_dp_phy_pattern_param *tp_params);
@ -79,6 +76,9 @@ struct link_hwss {
void (*setup_stream_encoder)(struct pipe_ctx *pipe_ctx);
void (*reset_stream_encoder)(struct pipe_ctx *pipe_ctx);
void (*setup_stream_attribute)(struct pipe_ctx *pipe_ctx);
void (*disable_link_output)(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
};
#endif /* __DC_LINK_HWSS_H__ */

4
drivers/gpu/drm/amd/display/dc/link/link_hwss_dio.c
View file

@ -130,7 +130,7 @@ void enable_dio_dp_link_output(struct dc_link *link,
dp_source_sequence_trace(link, DPCD_SOURCE_SEQ_AFTER_ENABLE_LINK_PHY);
}
void disable_dio_dp_link_output(struct dc_link *link,
void disable_dio_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal)
{
@ -174,10 +174,10 @@ static const struct link_hwss dio_link_hwss = {
.setup_stream_encoder = setup_dio_stream_encoder,
.reset_stream_encoder = reset_dio_stream_encoder,
.setup_stream_attribute = setup_dio_stream_attribute,
.disable_link_output = disable_dio_link_output,
.ext = {
.set_throttled_vcp_size = set_dio_throttled_vcp_size,
.enable_dp_link_output = enable_dio_dp_link_output,
.disable_dp_link_output = disable_dio_dp_link_output,
.set_dp_link_test_pattern = set_dio_dp_link_test_pattern,
.set_dp_lane_settings = set_dio_dp_lane_settings,
.update_stream_allocation_table = update_dio_stream_allocation_table,

2
drivers/gpu/drm/amd/display/dc/link/link_hwss_dio.h
View file

@ -40,7 +40,7 @@ void enable_dio_dp_link_output(struct dc_link *link,
enum signal_type signal,
enum clock_source_id clock_source,
const struct dc_link_settings *link_settings);
void disable_dio_dp_link_output(struct dc_link *link,
void disable_dio_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal);
void set_dio_dp_link_test_pattern(struct dc_link *link,

2
drivers/gpu/drm/amd/display/dc/link/link_hwss_dpia.c
View file

@ -56,10 +56,10 @@ static const struct link_hwss dpia_link_hwss = {
.setup_stream_encoder = setup_dio_stream_encoder,
.reset_stream_encoder = reset_dio_stream_encoder,
.setup_stream_attribute = setup_dio_stream_attribute,
.disable_link_output = disable_dio_link_output,
.ext = {
.set_throttled_vcp_size = set_dio_throttled_vcp_size,
.enable_dp_link_output = enable_dio_dp_link_output,
.disable_dp_link_output = disable_dio_dp_link_output,
.set_dp_link_test_pattern = set_dio_dp_link_test_pattern,
.set_dp_lane_settings = set_dio_dp_lane_settings,
.update_stream_allocation_table = update_dpia_stream_allocation_table,

2
drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c
View file

@ -266,11 +266,11 @@ static const struct link_hwss hpo_dp_link_hwss = {
.setup_stream_encoder = setup_hpo_dp_stream_encoder,
.reset_stream_encoder = reset_hpo_dp_stream_encoder,
.setup_stream_attribute = setup_hpo_dp_stream_attribute,
.disable_link_output = disable_hpo_dp_link_output,
.ext = {
.set_throttled_vcp_size = set_hpo_dp_throttled_vcp_size,
.set_hblank_min_symbol_width = set_hpo_dp_hblank_min_symbol_width,
.enable_dp_link_output = enable_hpo_dp_link_output,
.disable_dp_link_output = disable_hpo_dp_link_output,
.set_dp_link_test_pattern = set_hpo_dp_link_test_pattern,
.set_dp_lane_settings = set_hpo_dp_lane_settings,
.update_stream_allocation_table = update_hpo_dp_stream_allocation_table,

8
drivers/gpu/drm/amd/display/dc/virtual/virtual_link_hwss.c
View file

@ -36,10 +36,18 @@ void virtual_setup_stream_attribute(struct pipe_ctx *pipe_ctx)
void virtual_reset_stream_encoder(struct pipe_ctx *pipe_ctx)
{
}
void virtual_disable_link_output(struct dc_link *link,
const struct link_resource *link_res,
enum signal_type signal)
{
}
static const struct link_hwss virtual_link_hwss = {
.setup_stream_encoder = virtual_setup_stream_encoder,
.reset_stream_encoder = virtual_reset_stream_encoder,
.setup_stream_attribute = virtual_setup_stream_attribute,
.disable_link_output = virtual_disable_link_output,
};
const struct link_hwss *get_virtual_link_hwss(void)