From: Sung Lee <sung.lee@xxxxxxx>
[WHY]
In headless systems, if set mode is not called, hardware will not be
powered down on boot, causing HW/SW discrepancies. Powering down
hardware on boot will ensure SW state is accurate.
[HOW]
Set a timer callback on boot for 10 seconds. If set mode is not called
within that time, power down hardware. Otherwise, do not power down.
Signed-off-by: Sung Lee <sung.lee@xxxxxxx>
Reviewed-by: Anthony Koo <Anthony.Koo@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 6 ++
drivers/gpu/drm/amd/display/dc/dc.h | 3 +
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 69 ++++++++++---------
.../amd/display/dc/dcn10/dcn10_hw_sequencer.h | 1 +
.../gpu/drm/amd/display/dc/dcn10/dcn10_init.c | 1 +
.../gpu/drm/amd/display/dc/dcn20/dcn20_init.c | 1 +
.../gpu/drm/amd/display/dc/dcn21/dcn21_init.c | 1 +
.../gpu/drm/amd/display/dc/inc/hw_sequencer.h | 1 +
8 files changed, 51 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 942ceb0f6383..8d935020068f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2683,6 +2683,12 @@ void dc_interrupt_ack(struct dc *dc, enum dc_irq_source src)
dal_irq_service_ack(dc->res_pool->irqs, src);
}
+void dc_power_down_on_boot(struct dc *dc)
+{
+ if (dc->ctx->dce_environment != DCE_ENV_VIRTUAL_HW &&
+ dc->hwss.power_down_on_boot)
+ dc->hwss.power_down_on_boot(dc);
+}
void dc_set_power_state(
struct dc *dc,
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 389edcf3f6ce..c2336ca3a9e0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1029,6 +1029,7 @@ bool dc_resource_is_dsc_encoding_supported(const struct dc *dc);
*/
bool dc_commit_state(struct dc *dc, struct dc_state *context);
+void dc_power_down_on_boot(struct dc *dc);
struct dc_state *dc_create_state(struct dc *dc);
struct dc_state *dc_copy_state(struct dc_state *src_ctx);
@@ -1229,6 +1230,8 @@ void dc_set_power_state(
enum dc_acpi_cm_power_state power_state);
void dc_resume(struct dc *dc);
+void dc_power_down_on_boot(struct dc *dc);
+
#if defined(CONFIG_DRM_AMD_DC_HDCP)
/*
* HDCP Interfaces
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 6711ff908bcf..20466cad6ade 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
@@ -1393,38 +1393,6 @@ void dcn10_init_hw(struct dc *dc)
}
}
- /* In headless boot cases, DIG may be turned
- * on which causes HW/SW discrepancies.
- * To avoid this, power down hardware on boot
- * if DIG is turned on and seamless boot not enabled
- */
- if (dc->config.power_down_display_on_boot) {
- struct dc_link *edp_link = get_edp_link(dc);
-
- if (edp_link &&
- edp_link->link_enc->funcs->is_dig_enabled &&
- edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
- dc->hwseq->funcs.edp_backlight_control &&
- dc->hwss.power_down &&
- dc->hwss.edp_power_control) {
- dc->hwseq->funcs.edp_backlight_control(edp_link, false);
- dc->hwss.power_down(dc);
- dc->hwss.edp_power_control(edp_link, false);
- } else {
- for (i = 0; i < dc->link_count; i++) {
- struct dc_link *link = dc->links[i];
-
- if (link->link_enc->funcs->is_dig_enabled &&
- link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
- dc->hwss.power_down) {
- dc->hwss.power_down(dc);
- break;
- }
-
- }
- }
- }
-
if (!is_optimized_init_done) {
for (i = 0; i < res_pool->audio_count; i++) {
@@ -1475,6 +1443,43 @@ void dcn10_init_hw(struct dc *dc)
}
+/* In headless boot cases, DIG may be turned
+ * on which causes HW/SW discrepancies.
+ * To avoid this, power down hardware on boot
+ * if DIG is turned on and seamless boot not enabled
+ */
+void dcn10_power_down_on_boot(struct dc *dc)
+{
+ int i = 0;
+
+ if (dc->config.power_down_display_on_boot) {
+ struct dc_link *edp_link = get_edp_link(dc);
+
+ if (edp_link &&
+ edp_link->link_enc->funcs->is_dig_enabled &&
+ edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc) &&
+ dc->hwseq->funcs.edp_backlight_control &&
+ dc->hwss.power_down &&
+ dc->hwss.edp_power_control) {
+ dc->hwseq->funcs.edp_backlight_control(edp_link, false);
+ dc->hwss.power_down(dc);
+ dc->hwss.edp_power_control(edp_link, false);
+ } else {
+ for (i = 0; i < dc->link_count; i++) {
+ struct dc_link *link = dc->links[i];
+
+ if (link->link_enc->funcs->is_dig_enabled &&
+ link->link_enc->funcs->is_dig_enabled(link->link_enc) &&
+ dc->hwss.power_down) {
+ dc->hwss.power_down(dc);
+ break;
+ }
+
+ }
+ }
+ }
+}
+
void dcn10_reset_hw_ctx_wrap(
struct dc *dc,
struct dc_state *context)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h
index 42b6e016d71e..6d891166da8a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.h
@@ -109,6 +109,7 @@ void dcn10_program_pipe(
void dcn10_program_gamut_remap(struct pipe_ctx *pipe_ctx);
void dcn10_init_hw(struct dc *dc);
void dcn10_init_pipes(struct dc *dc, struct dc_state *context);
+void dcn10_power_down_on_boot(struct dc *dc);
enum dc_status dce110_apply_ctx_to_hw(
struct dc *dc,
struct dc_state *context);
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c
index f6a790c49321..5c98b71c1d47 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_init.c
@@ -30,6 +30,7 @@
static const struct hw_sequencer_funcs dcn10_funcs = {
.program_gamut_remap = dcn10_program_gamut_remap,
.init_hw = dcn10_init_hw,
+ .power_down_on_boot = dcn10_power_down_on_boot,
.apply_ctx_to_hw = dce110_apply_ctx_to_hw,
.apply_ctx_for_surface = dcn10_apply_ctx_for_surface,
.post_unlock_program_front_end = dcn10_post_unlock_program_front_end,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
index bb9e9bec2f28..2380392b916e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
@@ -30,6 +30,7 @@
static const struct hw_sequencer_funcs dcn20_funcs = {
.program_gamut_remap = dcn10_program_gamut_remap,
.init_hw = dcn10_init_hw,
+ .power_down_on_boot = dcn10_power_down_on_boot,
.apply_ctx_to_hw = dce110_apply_ctx_to_hw,
.apply_ctx_for_surface = NULL,
.program_front_end_for_ctx = dcn20_program_front_end_for_ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c
index 8575de1a8ad2..177d0dc8927a 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_init.c
@@ -31,6 +31,7 @@
static const struct hw_sequencer_funcs dcn21_funcs = {
.program_gamut_remap = dcn10_program_gamut_remap,
.init_hw = dcn10_init_hw,
+ .power_down_on_boot = dcn10_power_down_on_boot,
.apply_ctx_to_hw = dce110_apply_ctx_to_hw,
.apply_ctx_for_surface = NULL,
.program_front_end_for_ctx = dcn20_program_front_end_for_ctx,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index 066a2a723c12..720ce5e458d8 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -56,6 +56,7 @@ struct hw_sequencer_funcs {
/* Pipe Programming Related */
void (*init_hw)(struct dc *dc);
+ void (*power_down_on_boot)(struct dc *dc);
void (*enable_accelerated_mode)(struct dc *dc,
struct dc_state *context);
enum dc_status (*apply_ctx_to_hw)(struct dc *dc,
--
2.27.0
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