[PATCH 22/30] drm/amd/display: Add helper for blanking all dp displays
Timo Aaltonen
tjaalton at ubuntu.com
Mon Nov 22 18:34:10 UTC 2021
From: "Leo (Hanghong) Ma" <hanghong.ma at amd.com>
BugLink: https://bugs.launchpad.net/bugs/1951868
[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 at amd.com>
Acked-by: Solomon Chiu <solomon.chiu at amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
(backported from commit 1445d967fb915156aed0e79ca80c239cb2d414ce - fix conflicts in dch110_hw_sequencer.c, dcn31_hwseq.c)
Signed-off-by: Timo Aaltonen <timo.aaltonen at canonical.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 45 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc_link.h | 1 +
.../display/dc/dce110/dce110_hw_sequencer.c | 13 +-----
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 41 ++---------------
.../drm/amd/display/dc/dcn30/dcn30_hwseq.c | 39 ++--------------
.../drm/amd/display/dc/dcn31/dcn31_hwseq.c | 37 ++-------------
6 files changed, 56 insertions(+), 120 deletions(-)
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 42f49bb5a7f3..43971f3759eb 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1909,6 +1909,51 @@ 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)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index 83845d006c54..e405433496c6 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -270,6 +270,7 @@ 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.
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 354db9f89e8e..db32b519f735 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
@@ -1552,22 +1552,11 @@ static void power_down_encoders(struct dc *dc)
{
int i;
- /* do not know BIOS back-front mapping, simply blank all. It will not
- * hurt for non-DP
- */
- for (i = 0; i < dc->res_pool->stream_enc_count; i++) {
- dc->res_pool->stream_enc[i]->funcs->dp_blank(dc->links[i],
- dc->res_pool->stream_enc[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]->wa_flags.dp_keep_receiver_powered)
- dp_receiver_power_ctrl(dc->links[i], false);
-
if (signal != SIGNAL_TYPE_EDP)
signal = SIGNAL_TYPE_NONE;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 6bdba3922dd5..59e6d5005b66 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1301,7 +1301,7 @@ 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;
@@ -1397,43 +1397,8 @@ 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
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index b132ebed09d4..01a90badd173 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
@@ -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
diff --git a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
index efa07c4dc31b..d15bcc086890 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn31/dcn31_hwseq.c
@@ -70,7 +70,7 @@ 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)
@@ -174,39 +174,8 @@ void dcn31_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;
-
- /* 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
--
2.32.0
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