By now all the places are updated to track the DSC slice configuration
in intel_crtc_state::dsc.slice_config, so calculate the slices-per-line
value using that config, instead of using
intel_crtc_state::dsc.slice_count caching the same value and remove
the cached slice_count.

Signed-off-by: Imre Deak <[email protected]>
---
 drivers/gpu/drm/i915/display/intel_bios.c          |  6 ++----
 drivers/gpu/drm/i915/display/intel_display_types.h |  1 -
 drivers/gpu/drm/i915/display/intel_dp.c            | 11 +++++------
 drivers/gpu/drm/i915/display/intel_vdsc.c          |  7 ++++---
 4 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c 
b/drivers/gpu/drm/i915/display/intel_bios.c
index 479c5f0158800..698e569a48e61 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -3538,14 +3538,12 @@ static void fill_dsc(struct intel_crtc_state 
*crtc_state,
                crtc_state->dsc.slice_config.slices_per_stream = 1;
        }
 
-       crtc_state->dsc.slice_count = 
intel_dsc_line_slice_count(&crtc_state->dsc.slice_config);
-
        if (crtc_state->hw.adjusted_mode.crtc_hdisplay %
-           crtc_state->dsc.slice_count != 0)
+           intel_dsc_line_slice_count(&crtc_state->dsc.slice_config) != 0)
                drm_dbg_kms(display->drm,
                            "VBT: DSC hdisplay %d not divisible by slice count 
%d\n",
                            crtc_state->hw.adjusted_mode.crtc_hdisplay,
-                           crtc_state->dsc.slice_count);
+                           
intel_dsc_line_slice_count(&crtc_state->dsc.slice_config));
 
        /*
         * The VBT rc_buffer_block_size and rc_buffer_size definitions
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h 
b/drivers/gpu/drm/i915/display/intel_display_types.h
index 574fc7ff33c97..0f56be61f081b 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1312,7 +1312,6 @@ struct intel_crtc_state {
                } slice_config;
                /* Compressed Bpp in U6.4 format (first 4 bits for fractional 
part) */
                u16 compressed_bpp_x16;
-               u8 slice_count;
                struct drm_dsc_config config;
        } dsc;
 
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index d17afc18fcfa7..126048c5233c4 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2031,12 +2031,14 @@ static int dsc_compute_link_config(struct intel_dp 
*intel_dp,
                        } else {
                                unsigned long bw_overhead_flags =
                                        pipe_config->fec_enable ? 
DRM_DP_BW_OVERHEAD_FEC : 0;
+                               int line_slice_count =
+                                       
intel_dsc_line_slice_count(&pipe_config->dsc.slice_config);
 
                                if (!is_bw_sufficient_for_dsc_config(intel_dp,
                                                                     link_rate, 
lane_count,
                                                                     
adjusted_mode->crtc_clock,
                                                                     
adjusted_mode->hdisplay,
-                                                                    
pipe_config->dsc.slice_count,
+                                                                    
line_slice_count,
                                                                     
dsc_bpp_x16,
                                                                     
bw_overhead_flags))
                                        continue;
@@ -2427,11 +2429,8 @@ int intel_dp_dsc_compute_config(struct intel_dp 
*intel_dp,
                pipe_config->dsc.slice_config.pipes_per_line /
                pipe_config->dsc.slice_config.streams_per_pipe;
 
-       pipe_config->dsc.slice_count =
-               intel_dsc_line_slice_count(&pipe_config->dsc.slice_config);
-
        drm_WARN_ON(display->drm,
-                   pipe_config->dsc.slice_count != slices_per_line);
+                   intel_dsc_line_slice_count(&pipe_config->dsc.slice_config) 
!= slices_per_line);
 
        ret = intel_dp_dsc_compute_params(connector, pipe_config);
        if (ret < 0) {
@@ -2449,7 +2448,7 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
                    "Compressed Bpp = " FXP_Q4_FMT " Slice Count = %d\n",
                    pipe_config->pipe_bpp,
                    FXP_Q4_ARGS(pipe_config->dsc.compressed_bpp_x16),
-                   pipe_config->dsc.slice_count);
+                   intel_dsc_line_slice_count(&pipe_config->dsc.slice_config));
 
        return 0;
 }
diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c 
b/drivers/gpu/drm/i915/display/intel_vdsc.c
index 2b27671f97b32..190ce567bc7fa 100644
--- a/drivers/gpu/drm/i915/display/intel_vdsc.c
+++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
@@ -283,8 +283,9 @@ int intel_dsc_compute_params(struct intel_crtc_state 
*pipe_config)
        int ret;
 
        vdsc_cfg->pic_width = pipe_config->hw.adjusted_mode.crtc_hdisplay;
-       vdsc_cfg->slice_width = DIV_ROUND_UP(vdsc_cfg->pic_width,
-                                            pipe_config->dsc.slice_count);
+       vdsc_cfg->slice_width =
+               DIV_ROUND_UP(vdsc_cfg->pic_width,
+                            
intel_dsc_line_slice_count(&pipe_config->dsc.slice_config));
 
        err = intel_dsc_slice_dimensions_valid(pipe_config, vdsc_cfg);
 
@@ -1042,7 +1043,7 @@ static void intel_vdsc_dump_state(struct drm_printer *p, 
int indent,
        drm_printf_indent(p, indent,
                          "dsc-dss: compressed-bpp:" FXP_Q4_FMT ", slice-count: 
%d, num_streams: %d\n",
                          FXP_Q4_ARGS(crtc_state->dsc.compressed_bpp_x16),
-                         crtc_state->dsc.slice_count,
+                         
intel_dsc_line_slice_count(&crtc_state->dsc.slice_config),
                          crtc_state->dsc.slice_config.streams_per_pipe);
 }
 
-- 
2.49.1

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