drm/amd/display: Add function to get optc active size

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 f2fbce0..e6a3ade 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c
@@ -1257,6 +1257,37 @@ void optc1_read_otg_state(struct optc *optc1,
                        OPTC_UNDERFLOW_OCCURRED_STATUS, &s->underflow_occurred_status);
 }
 
+bool optc1_get_otg_active_size(struct timing_generator *optc,
+               uint32_t *otg_active_width,
+               uint32_t *otg_active_height)
+{
+       uint32_t otg_enabled;
+       uint32_t v_blank_start;
+       uint32_t v_blank_end;
+       uint32_t h_blank_start;
+       uint32_t h_blank_end;
+       struct optc *optc1 = DCN10TG_FROM_TG(optc);
+
+
+       REG_GET(OTG_CONTROL,
+                       OTG_MASTER_EN, &otg_enabled);
+
+       if (otg_enabled == 0)
+               return false;
+
+       REG_GET_2(OTG_V_BLANK_START_END,
+                       OTG_V_BLANK_START, &v_blank_start,
+                       OTG_V_BLANK_END, &v_blank_end);
+
+       REG_GET_2(OTG_H_BLANK_START_END,
+                       OTG_H_BLANK_START, &h_blank_start,
+                       OTG_H_BLANK_END, &h_blank_end);
+
+       *otg_active_width = v_blank_start - v_blank_end;
+       *otg_active_height = h_blank_start - h_blank_end;
+       return true;
+}
+
 void optc1_clear_optc_underflow(struct timing_generator *optc)
 {
        struct optc *optc1 = DCN10TG_FROM_TG(optc);
@@ -1305,6 +1336,7 @@ static const struct timing_generator_funcs dcn10_tg_funcs = {
                .get_position = optc1_get_position,
                .get_frame_count = optc1_get_vblank_counter,
                .get_scanoutpos = optc1_get_crtc_scanoutpos,
+               .get_otg_active_size = optc1_get_otg_active_size,
                .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/dcn10/dcn10_optc.h b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h
index c62052f..59ed272 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.h
@@ -507,4 +507,8 @@ bool optc1_is_optc_underflow_occurred(struct timing_generator *optc);
 
 void optc1_set_blank_data_double_buffer(struct timing_generator *optc, bool enable);
 
+bool optc1_get_otg_active_size(struct timing_generator *optc,
+               uint32_t *otg_active_width,
+               uint32_t *otg_active_height);
+
 #endif /* __DC_TIMING_GENERATOR_DCN10_H__ */

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 69cb0a1..af700c7 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
@@ -156,6 +156,9 @@ struct timing_generator_funcs {
                uint32_t *v_blank_end,
                uint32_t *h_position,
                uint32_t *v_position);
+       bool (*get_otg_active_size)(struct timing_generator *optc,
+                       uint32_t *otg_active_width,
+                       uint32_t *otg_active_height);
        void (*set_early_control)(struct timing_generator *tg,
                                                           uint32_t early_cntl);
        void (*wait_for_state)(struct timing_generator *tg,