From: Yongqiang Sun <yongqiang....@amd.com>

Linux doesn't know lid state, better to check dig enable
value from register.

Signed-off-by: Yongqiang Sun <yongqiang....@amd.com>
Reviewed-by: Tony Cheng <tony.ch...@amd.com>
Acked-by: Harry Wentland <harry.wentl...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dc_stream.h         |  1 -
 .../gpu/drm/amd/display/dc/dce/dce_link_encoder.c  |  6 ++-
 .../gpu/drm/amd/display/dc/dce/dce_link_encoder.h  |  2 +
 .../amd/display/dc/dce110/dce110_hw_sequencer.c    | 47 +++++++---------------
 .../gpu/drm/amd/display/dc/inc/hw/link_encoder.h   |  1 +
 5 files changed, 21 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h 
b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index 5f215ca38c07..046e87aa699a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -98,7 +98,6 @@ struct dc_stream_state {
        int phy_pix_clk;
        enum signal_type signal;
        bool dpms_off;
-       bool lid_state_closed;
 
        struct dc_stream_status status;
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c 
b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
index 8167cad7bcf7..dbe3b26b6d9e 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -113,6 +113,7 @@ static const struct link_encoder_funcs dce110_lnk_enc_funcs 
= {
        .connect_dig_be_to_fe = dce110_link_encoder_connect_dig_be_to_fe,
        .enable_hpd = dce110_link_encoder_enable_hpd,
        .disable_hpd = dce110_link_encoder_disable_hpd,
+       .is_dig_enabled = dce110_is_dig_enabled,
        .destroy = dce110_link_encoder_destroy
 };
 
@@ -535,8 +536,9 @@ void dce110_psr_program_secondary_packet(struct 
link_encoder *enc,
                DP_SEC_GSP0_PRIORITY, 1);
 }
 
-static bool is_dig_enabled(const struct dce110_link_encoder *enc110)
+bool dce110_is_dig_enabled(struct link_encoder *enc)
 {
+       struct dce110_link_encoder *enc110 = TO_DCE110_LINK_ENC(enc);
        uint32_t value;
 
        REG_GET(DIG_BE_EN_CNTL, DIG_ENABLE, &value);
@@ -1031,7 +1033,7 @@ void dce110_link_encoder_disable_output(
        struct bp_transmitter_control cntl = { 0 };
        enum bp_result result;
 
-       if (!is_dig_enabled(enc110)) {
+       if (!dce110_is_dig_enabled(enc)) {
                /* OF_SKIP_POWER_DOWN_INACTIVE_ENCODER */
                return;
        }
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h 
b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
index 0ec3433d34b6..347069461a22 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.h
@@ -263,4 +263,6 @@ void dce110_psr_program_dp_dphy_fast_training(struct 
link_encoder *enc,
 void dce110_psr_program_secondary_packet(struct link_encoder *enc,
                        unsigned int sdp_transmit_line_num_deadline);
 
+bool dce110_is_dig_enabled(struct link_encoder *enc);
+
 #endif /* __DC_LINK_ENCODER__DCE110_H__ */
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 9e1a8823d3d8..5dbd4335cd6e 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
@@ -1481,15 +1481,15 @@ static void disable_vga_and_power_gate_all_controllers(
        }
 }
 
-static bool is_eDP_lid_closed(struct dc_state *context)
+static struct dc_link *get_link_for_edp(struct dc *dc)
 {
        int i;
 
-       for (i = 0; i < context->stream_count; i++) {
-               if (context->streams[i]->signal == SIGNAL_TYPE_EDP)
-                       return context->streams[i]->lid_state_closed;
+       for (i = 0; i < dc->link_count; i++) {
+               if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP)
+                       return dc->links[i];
        }
-       return false;
+       return NULL;
 }
 
 static struct dc_link *get_link_for_edp_not_in_use(
@@ -1526,41 +1526,22 @@ static struct dc_link *get_link_for_edp_not_in_use(
  */
 void dce110_enable_accelerated_mode(struct dc *dc, struct dc_state *context)
 {
-       /* check eDP lid state and BIOS_SCRATCH_3 to determine fast boot 
optimization
-        * UEFI boot
-        *                              edp_active_status_from_scratch          
fast boot optimization
-        * S4/S5 resume:
-        * Lid Open             true                                            
                true
-        * Lid Close    false                                                   
        false
-        *
-        * S3/ resume:
-        * Lid Open             false                                           
                false
-        * Lid Close    false                                                   
        false
-        *
-        * Legacy boot:
-        *                              edp_active_status_from_scratch          
fast boot optimization
-        * S4/S resume:
-        * Lid Open             true                                            
                true
-        * Lid Close    true                                                    
        false
-        *
-        * S3/ resume:
-        * Lid Open             false                                           
                false
-        * Lid Close    false                                                   
        false
-        */
-       struct dc_bios *dcb = dc->ctx->dc_bios;
-       bool lid_state_closed = is_eDP_lid_closed(context);
        struct dc_link *edp_link_to_turnoff = NULL;
-       bool edp_active_status_from_scratch =
-                       (dcb->funcs->get_vga_enabled_displays(dc->ctx->dc_bios) 
== ATOM_DISPLAY_LCD1_ACTIVE);
+       struct dc_link *edp_link = get_link_for_edp(dc);
+       bool can_eDP_fast_boot_optimize = false;
+
+       if (edp_link) {
+               can_eDP_fast_boot_optimize =
+                               
edp_link->link_enc->funcs->is_dig_enabled(edp_link->link_enc);
+       }
 
-       /*Lid open*/
-       if (!lid_state_closed) {
+       if (can_eDP_fast_boot_optimize) {
                edp_link_to_turnoff = get_link_for_edp_not_in_use(dc, context);
 
                /* if OS doesn't light up eDP and eDP link is available, we 
want to disable
                 * If resume from S4/S5, should optimization.
                 */
-               if (!edp_link_to_turnoff && edp_active_status_from_scratch)
+               if (!edp_link_to_turnoff)
                        dc->apply_edp_fast_boot_optimization = true;
        }
 
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 54d8a1386142..cf6df2e7beb2 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
@@ -149,6 +149,7 @@ struct link_encoder_funcs {
                bool connect);
        void (*enable_hpd)(struct link_encoder *enc);
        void (*disable_hpd)(struct link_encoder *enc);
+       bool (*is_dig_enabled)(struct link_encoder *enc);
        void (*destroy)(struct link_encoder **enc);
 };
 
-- 
2.15.1

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