From: Anthony Koo <Anthony.Koo@xxxxxxx>
[Why]
Need to figure out whether a timing we want to commit matches
something that GOP already programmed, in which case
we can decide to some optimizations
[How]
1. Add way to check for DIG FE
2. Add way to check for matching OTG timing
3. Add way to check for matching pixel clock (if possible)
- Currently only support DP for pixel clock, since it is easy to calc
Change-Id: Iaf9e0f674f4afd4720e68ccfd8431d6a5d8346ba
Signed-off-by: Anthony Koo <Anthony.Koo@xxxxxxx>
Reviewed-by: Aric Cyr <Aric.Cyr@xxxxxxx>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 46 +++++++++++++++
drivers/gpu/drm/amd/display/dc/dc.h | 4 ++
.../drm/amd/display/dc/dce/dce_clock_source.c | 28 ++++++++-
.../amd/display/dc/dcn10/dcn10_link_encoder.c | 10 ++++
.../amd/display/dc/dcn10/dcn10_link_encoder.h | 2 +
.../gpu/drm/amd/display/dc/dcn10/dcn10_optc.c | 59 +++++++++++++++++++
.../gpu/drm/amd/display/dc/inc/clock_source.h | 4 ++
.../drm/amd/display/dc/inc/hw/link_encoder.h | 1 +
.../amd/display/dc/inc/hw/timing_generator.h | 2 +
9 files changed, 154 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 77e1bd18b1dd..b620520771a7 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -969,6 +969,52 @@ static bool context_changed(
return false;
}
+bool dc_validate_seamless_boot_timing(struct dc *dc,
+ const struct dc_sink *sink,
+ struct dc_crtc_timing *crtc_timing)
+{
+ struct timing_generator *tg;
+ struct dc_link *link = sink->link;
+ unsigned int inst;
+
+ /* Check for enabled DIG to identify enabled display */
+ if (!link->link_enc->funcs->is_dig_enabled(link->link_enc))
+ return false;
+
+ /* Check for which front end is used by this encoder.
+ * Note the inst is 1 indexed, where 0 is undefined.
+ * Note that DIG_FE can source from different OTG but our
+ * current implementation always map 1-to-1, so this code makes
+ * the same assumption and doesn't check OTG source.
+ */
+ inst = link->link_enc->funcs->get_dig_frontend(link->link_enc) - 1;
+
+ /* Instance should be within the range of the pool */
+ if (inst >= dc->res_pool->pipe_count)
+ return false;
+
+ tg = dc->res_pool->timing_generators[inst];
+
+ if (!tg->funcs->is_matching_timing)
+ return false;
+
+ if (!tg->funcs->is_matching_timing(tg, crtc_timing))
+ return false;
+
+ if (dc_is_dp_signal(link->connector_signal)) {
+ unsigned int pix_clk_100hz;
+
+ dc->res_pool->dp_clock_source->funcs->get_pixel_clk_frequency_100hz(
+ dc->res_pool->dp_clock_source,
+ inst, &pix_clk_100hz);
+
+ if (crtc_timing->pix_clk_100hz != pix_clk_100hz)
+ return false;
+ }
+
+ return true;
+}
+
bool dc_enable_stereo(
struct dc *dc,
struct dc_state *context,
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index bade219d1268..1a7fd6aa77eb 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -594,6 +594,10 @@ struct dc_validation_set {
uint8_t plane_count;
};
+bool dc_validate_seamless_boot_timing(struct dc *dc,
+ const struct dc_sink *sink,
+ struct dc_crtc_timing *crtc_timing);
+
enum dc_status dc_validate_plane(struct dc *dc, const struct dc_plane_state *plane_state);
void get_clock_requirements_for_state(struct dc_state *state, struct AsicStateEx *info);
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
index c67e90e5c339..71d5777de961 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c
@@ -977,6 +977,28 @@ static bool dce110_clock_source_power_down(
return bp_result == BP_RESULT_OK;
}
+static bool get_pixel_clk_frequency_100hz(
+ struct clock_source *clock_source,
+ unsigned int inst,
+ unsigned int *pixel_clk_khz)
+{
+ struct dce110_clk_src *clk_src = TO_DCE110_CLK_SRC(clock_source);
+ unsigned int clock_hz = 0;
+
+ if (clock_source->id == CLOCK_SOURCE_ID_DP_DTO) {
+ clock_hz = REG_READ(PHASE[inst]);
+
+ /* NOTE: There is agreement with VBIOS here that MODULO is
+ * programmed equal to DPREFCLK, in which case PHASE will be
+ * equivalent to pixel clock.
+ */
+ *pixel_clk_khz = clock_hz / 100;
+ return true;
+ }
+
+ return false;
+}
+
/*****************************************/
/* Constructor */
/*****************************************/
@@ -984,12 +1006,14 @@ static bool dce110_clock_source_power_down(
static const struct clock_source_funcs dce112_clk_src_funcs = {
.cs_power_down = dce110_clock_source_power_down,
.program_pix_clk = dce112_program_pix_clk,
- .get_pix_clk_dividers = dce112_get_pix_clk_dividers
+ .get_pix_clk_dividers = dce112_get_pix_clk_dividers,
+ .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
};
static const struct clock_source_funcs dce110_clk_src_funcs = {
.cs_power_down = dce110_clock_source_power_down,
.program_pix_clk = dce110_program_pix_clk,
- .get_pix_clk_dividers = dce110_get_pix_clk_dividers
+ .get_pix_clk_dividers = dce110_get_pix_clk_dividers,
+ .get_pixel_clk_frequency_100hz = get_pixel_clk_frequency_100hz
};
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
index 771449f8984f..a9db372688ff 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.c
@@ -85,6 +85,7 @@ static const struct link_encoder_funcs dcn10_lnk_enc_funcs = {
.enable_hpd = dcn10_link_encoder_enable_hpd,
.disable_hpd = dcn10_link_encoder_disable_hpd,
.is_dig_enabled = dcn10_is_dig_enabled,
+ .get_dig_frontend = dcn10_get_dig_frontend,
.destroy = dcn10_link_encoder_destroy
};
@@ -495,6 +496,15 @@ bool dcn10_is_dig_enabled(struct link_encoder *enc)
return value;
}
+unsigned int dcn10_get_dig_frontend(struct link_encoder *enc)
+{
+ struct dcn10_link_encoder *enc10 = TO_DCN10_LINK_ENC(enc);
+ uint32_t value;
+
+ REG_GET(DIG_BE_CNTL, DIG_FE_SOURCE_SELECT, &value);
+ return value;
+}
+
static void link_encoder_disable(struct dcn10_link_encoder *enc10)
{
/* reset training pattern */
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h
index 670b46e887ed..b74b80a247ec 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_link_encoder.h
@@ -336,6 +336,8 @@ void dcn10_psr_program_secondary_packet(struct link_encoder *enc,
bool dcn10_is_dig_enabled(struct link_encoder *enc);
+unsigned int dcn10_get_dig_frontend(struct link_encoder *enc);
+
void dcn10_aux_initialize(struct dcn10_link_encoder *enc10);
#endif /* __DC_LINK_ENCODER__DCN10_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
index 0355dcb8554a..51c98e99237e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
@@ -1208,6 +1208,64 @@ bool optc1_is_stereo_left_eye(struct timing_generator *optc)
return ret;
}
+bool optc1_is_matching_timing(struct timing_generator *tg,
+ const struct dc_crtc_timing *otg_timing)
+{
+ struct dc_crtc_timing hw_crtc_timing = {0};
+ struct dcn_otg_state s = {0};
+
+ if (tg == NULL || otg_timing == NULL)
+ return false;
+
+ optc1_read_otg_state(DCN10TG_FROM_TG(tg), &s);
+
+ hw_crtc_timing.h_total = s.h_total + 1;
+ hw_crtc_timing.h_addressable = s.h_total - ((s.h_total - s.h_blank_start) + s.h_blank_end);
+ hw_crtc_timing.h_front_porch = s.h_total + 1 - s.h_blank_start;
+ hw_crtc_timing.h_sync_width = s.h_sync_a_end - s.h_sync_a_start;
+
+ hw_crtc_timing.v_total = s.v_total + 1;
+ hw_crtc_timing.v_addressable = s.v_total - ((s.v_total - s.v_blank_start) + s.v_blank_end);
+ hw_crtc_timing.v_front_porch = s.v_total + 1 - s.v_blank_start;
+ hw_crtc_timing.v_sync_width = s.v_sync_a_end - s.v_sync_a_start;
+
+ if (otg_timing->h_total != hw_crtc_timing.h_total)
+ return false;
+
+ if (otg_timing->h_border_left != hw_crtc_timing.h_border_left)
+ return false;
+
+ if (otg_timing->h_addressable != hw_crtc_timing.h_addressable)
+ return false;
+
+ if (otg_timing->h_border_right != hw_crtc_timing.h_border_right)
+ return false;
+
+ if (otg_timing->h_front_porch != hw_crtc_timing.h_front_porch)
+ return false;
+
+ if (otg_timing->h_sync_width != hw_crtc_timing.h_sync_width)
+ return false;
+
+ if (otg_timing->v_total != hw_crtc_timing.v_total)
+ return false;
+
+ if (otg_timing->v_border_top != hw_crtc_timing.v_border_top)
+ return false;
+
+ if (otg_timing->v_addressable != hw_crtc_timing.v_addressable)
+ return false;
+
+ if (otg_timing->v_border_bottom != hw_crtc_timing.v_border_bottom)
+ return false;
+
+ if (otg_timing->v_sync_width != hw_crtc_timing.v_sync_width)
+ return false;
+
+ return true;
+}
+
+
void optc1_read_otg_state(struct optc *optc1,
struct dcn_otg_state *s)
{
@@ -1404,6 +1462,7 @@ static const struct timing_generator_funcs dcn10_tg_funcs = {
.get_frame_count = optc1_get_vblank_counter,
.get_scanoutpos = optc1_get_crtc_scanoutpos,
.get_otg_active_size = optc1_get_otg_active_size,
+ .is_matching_timing = optc1_is_matching_timing,
.set_early_control = optc1_set_early_control,
/* used by enable_timing_synchronization. Not need for FPGA */
.wait_for_state = optc1_wait_for_state,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/clock_source.h b/drivers/gpu/drm/amd/display/dc/inc/clock_source.h
index 43d1fbd8ace5..fe6301cb8681 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/clock_source.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/clock_source.h
@@ -166,6 +166,10 @@ struct clock_source_funcs {
struct clock_source *,
struct pixel_clk_params *,
struct pll_settings *);
+ bool (*get_pixel_clk_frequency_100hz)(
+ struct clock_source *clock_source,
+ unsigned int inst,
+ unsigned int *pixel_clk_khz);
};
struct clock_source {
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
index c20fdcaac53b..c9d3e37e9531 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/link_encoder.h
@@ -153,6 +153,7 @@ struct link_encoder_funcs {
void (*enable_hpd)(struct link_encoder *enc);
void (*disable_hpd)(struct link_encoder *enc);
bool (*is_dig_enabled)(struct link_encoder *enc);
+ unsigned int (*get_dig_frontend)(struct link_encoder *enc);
void (*destroy)(struct link_encoder **enc);
};
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
index 39fec0186c10..5d6cca7826f3 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
@@ -170,6 +170,8 @@ struct timing_generator_funcs {
bool (*get_otg_active_size)(struct timing_generator *optc,
uint32_t *otg_active_width,
uint32_t *otg_active_height);
+ bool (*is_matching_timing)(struct timing_generator *tg,
+ const struct dc_crtc_timing *otg_timing);
void (*set_early_control)(struct timing_generator *tg,
uint32_t early_cntl);
void (*wait_for_state)(struct timing_generator *tg,
--
2.17.1
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