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drm/amd/display: Add helper for blanking all dp displays

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[Why & How]
The codes to blank all dp display have been called many times,
so add a helper in dc_link to make it more concise.

Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Hanghong) Ma
2021-10-01 22:36:18 +08:00
committed by Alex Deucher
parent 99cc8774f7
commit 1445d967fb
6 changed files with 58 additions and 129 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@@ -1906,6 +1906,51 @@ static enum dc_status enable_link_dp_mst(
return enable_link_dp(state, pipe_ctx);
}
void blank_all_dp_displays(struct dc *dc, bool hw_init)
{
unsigned int i, j, fe;
uint8_t dpcd_power_state = '\0';
enum dc_status status = DC_ERROR_UNEXPECTED;
for (i = 0; i < dc->link_count; i++) {
enum signal_type signal = dc->links[i]->connector_signal;
if ((signal == SIGNAL_TYPE_EDP) ||
(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
if (hw_init && signal != SIGNAL_TYPE_EDP) {
/* DP 2.0 spec requires that we read LTTPR caps first */
dp_retrieve_lttpr_cap(dc->links[i]);
/* if any of the displays are lit up turn them off */
status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
&dpcd_power_state, sizeof(dpcd_power_state));
}
if ((signal != SIGNAL_TYPE_EDP && status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) ||
(!hw_init && dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc))) {
if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY &&
dc->links[i]->link_enc->funcs->get_dig_frontend) {
fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
if (fe == ENGINE_ID_UNKNOWN)
continue;
for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
if (fe == dc->res_pool->stream_enc[j]->id) {
dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
dc->res_pool->stream_enc[j]);
break;
}
}
}
if (!dc->links[i]->wa_flags.dp_keep_receiver_powered ||
(hw_init && signal != SIGNAL_TYPE_EDP))
dp_receiver_power_ctrl(dc->links[i], false);
}
}
}
}
static bool get_ext_hdmi_settings(struct pipe_ctx *pipe_ctx,
enum engine_id eng_id,
struct ext_hdmi_settings *settings)

1
drivers/gpu/drm/amd/display/dc/dc_link.h
View File

@@ -277,6 +277,7 @@ bool dc_link_setup_psr(struct dc_link *dc_link,
struct psr_context *psr_context);
void dc_link_get_psr_residency(const struct dc_link *link, uint32_t *residency);
void blank_all_dp_displays(struct dc *dc, bool hw_init);
/* Request DC to detect if there is a Panel connected.
* boot - If this call is during initial boot.

24
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
View File

@@ -1649,31 +1649,13 @@ static enum dc_status apply_single_controller_ctx_to_hw(
static void power_down_encoders(struct dc *dc)
{
int i, j;
int i;
blank_all_dp_displays(dc, false);
for (i = 0; i < dc->link_count; i++) {
enum signal_type signal = dc->links[i]->connector_signal;
if ((signal == SIGNAL_TYPE_EDP) ||
(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
if (dc->links[i]->link_enc->funcs->get_dig_frontend &&
dc->links[i]->link_enc->funcs->is_dig_enabled(dc->links[i]->link_enc)) {
unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
dc->links[i]->link_enc);
for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
if (fe == dc->res_pool->stream_enc[j]->id) {
dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
dc->res_pool->stream_enc[j]);
break;
}
}
}
if (!dc->links[i]->wa_flags.dp_keep_receiver_powered)
dp_receiver_power_ctrl(dc->links[i], false);
}
if (signal != SIGNAL_TYPE_EDP)
signal = SIGNAL_TYPE_NONE;

41
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View File

@@ -1366,7 +1366,7 @@ void dcn10_init_pipes(struct dc *dc, struct dc_state *context)
void dcn10_init_hw(struct dc *dc)
{
int i, j;
int i;
struct abm *abm = dc->res_pool->abm;
struct dmcu *dmcu = dc->res_pool->dmcu;
struct dce_hwseq *hws = dc->hwseq;
@@ -1462,43 +1462,8 @@ void dcn10_init_hw(struct dc *dc)
dmub_enable_outbox_notification(dc);
/* we want to turn off all dp displays before doing detection */
if (dc->config.power_down_display_on_boot) {
uint8_t dpcd_power_state = '\0';
enum dc_status status = DC_ERROR_UNEXPECTED;
for (i = 0; i < dc->link_count; i++) {
if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
continue;
/* DP 2.0 requires that LTTPR Caps be read first */
dp_retrieve_lttpr_cap(dc->links[i]);
/*
* If any of the displays are lit up turn them off.
* The reason is that some MST hubs cannot be turned off
* completely until we tell them to do so.
* If not turned off, then displays connected to MST hub
* won't light up.
*/
status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
&dpcd_power_state, sizeof(dpcd_power_state));
if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
/* blank dp stream before power off receiver*/
if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
unsigned int fe = dc->links[i]->link_enc->funcs->get_dig_frontend(dc->links[i]->link_enc);
for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
if (fe == dc->res_pool->stream_enc[j]->id) {
dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
dc->res_pool->stream_enc[j]);
break;
}
}
}
dp_receiver_power_ctrl(dc->links[i], false);
}
}
}
if (dc->config.power_down_display_on_boot)
blank_all_dp_displays(dc, true);
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which

39
drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
View File

@@ -437,7 +437,7 @@ void dcn30_init_hw(struct dc *dc)
struct dce_hwseq *hws = dc->hwseq;
struct dc_bios *dcb = dc->ctx->dc_bios;
struct resource_pool *res_pool = dc->res_pool;
int i, j;
int i;
int edp_num;
uint32_t backlight = MAX_BACKLIGHT_LEVEL;
@@ -534,41 +534,8 @@ void dcn30_init_hw(struct dc *dc)
hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
/* we want to turn off all dp displays before doing detection */
if (dc->config.power_down_display_on_boot) {
uint8_t dpcd_power_state = '\0';
enum dc_status status = DC_ERROR_UNEXPECTED;
for (i = 0; i < dc->link_count; i++) {
if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
continue;
/* DP 2.0 states that LTTPR regs must be read first */
dp_retrieve_lttpr_cap(dc->links[i]);
/* if any of the displays are lit up turn them off */
status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
&dpcd_power_state, sizeof(dpcd_power_state));
if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
/* blank dp stream before power off receiver*/
if (dc->links[i]->link_enc->funcs->get_dig_frontend) {
unsigned int fe;
fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
dc->links[i]->link_enc);
if (fe == ENGINE_ID_UNKNOWN)
continue;
for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
if (fe == dc->res_pool->stream_enc[j]->id) {
dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
dc->res_pool->stream_enc[j]);
break;
}
}
}
dp_receiver_power_ctrl(dc->links[i], false);
}
}
}
if (dc->config.power_down_display_on_boot)
blank_all_dp_displays(dc, true);
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which

37
drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
View File

@@ -71,7 +71,7 @@ void dcn31_init_hw(struct dc *dc)
struct dc_bios *dcb = dc->ctx->dc_bios;
struct resource_pool *res_pool = dc->res_pool;
uint32_t backlight = MAX_BACKLIGHT_LEVEL;
int i, j;
int i;
int edp_num;
if (dc->clk_mgr && dc->clk_mgr->funcs->init_clocks)
@@ -175,40 +175,9 @@ void dcn31_init_hw(struct dc *dc)
hws->funcs.dsc_pg_control(hws, res_pool->dscs[i]->inst, false);
/* we want to turn off all dp displays before doing detection */
if (dc->config.power_down_display_on_boot) {
uint8_t dpcd_power_state = '\0';
enum dc_status status = DC_ERROR_UNEXPECTED;
if (dc->config.power_down_display_on_boot)
blank_all_dp_displays(dc, true);
for (i = 0; i < dc->link_count; i++) {
if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT)
continue;
/* if any of the displays are lit up turn them off */
status = core_link_read_dpcd(dc->links[i], DP_SET_POWER,
&dpcd_power_state, sizeof(dpcd_power_state));
if (status == DC_OK && dpcd_power_state == DP_POWER_STATE_D0) {
/* blank dp stream before power off receiver*/
if (dc->links[i]->ep_type == DISPLAY_ENDPOINT_PHY &&
dc->links[i]->link_enc->funcs->get_dig_frontend) {
unsigned int fe;
fe = dc->links[i]->link_enc->funcs->get_dig_frontend(
dc->links[i]->link_enc);
if (fe == ENGINE_ID_UNKNOWN)
continue;
for (j = 0; j < dc->res_pool->stream_enc_count; j++) {
if (fe == dc->res_pool->stream_enc[j]->id) {
dc->res_pool->stream_enc[j]->funcs->dp_blank(dc->links[i],
dc->res_pool->stream_enc[j]);
break;
}
}
}
dp_receiver_power_ctrl(dc->links[i], false);
}
}
}
/* If taking control over from VBIOS, we may want to optimize our first
* mode set, so we need to skip powering down pipes until we know which