{icl,xelpd}_dsc_compute_link_config() are now effectively the same, and
can be unified to a single platform independent function.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 49 +++----------------------
1 file changed, 5 insertions(+), 44 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index c7de9efcd740..11a1ac28e21e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2094,47 +2094,11 @@ static bool intel_dp_dsc_valid_bpp(struct intel_dp *intel_dp, int bpp_x16)
}
/*
- * From a list of valid compressed bpps try different compressed bpp and find a
- * suitable link configuration that can support it.
+ * Find the max compressed BPP we can find a link configuration for. The BPPs to
+ * try depend on the source (platform) and sink.
*/
static int
-icl_dsc_compute_link_config(struct intel_dp *intel_dp,
- struct intel_crtc_state *pipe_config,
- const struct link_config_limits *limits,
- int min_bpp_x16,
- int max_bpp_x16,
- int bpp_step_x16,
- int timeslots)
-{
- int bpp_x16;
- int ret;
-
- for (bpp_x16 = max_bpp_x16; bpp_x16 >= min_bpp_x16; bpp_x16 -= bpp_step_x16) {
- if (!intel_dp_dsc_valid_bpp(intel_dp, bpp_x16))
- continue;
-
- ret = dsc_compute_link_config(intel_dp,
- pipe_config,
- limits,
- bpp_x16,
- timeslots);
- if (ret == 0) {
- pipe_config->dsc.compressed_bpp_x16 = bpp_x16;
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-/*
- * From XE_LPD onwards we supports compression bpps in steps of 1 up to
- * uncompressed bpp-1. So we start from max compressed bpp and see if any
- * link configuration is able to support that compressed bpp, if not we
- * step down and check for lower compressed bpp.
- */
-static int
-xelpd_dsc_compute_link_config(struct intel_dp *intel_dp,
+do_dsc_compute_compressed_bpp(struct intel_dp *intel_dp,
struct intel_crtc_state *pipe_config,
const struct link_config_limits *limits,
int min_bpp_x16,
@@ -2201,11 +2165,8 @@ static int dsc_compute_compressed_bpp(struct intel_dp *intel_dp,
output_bpp = intel_dp_output_bpp(pipe_config->output_format, pipe_bpp);
max_bpp_x16 = min(max_bpp_x16, fxp_q4_from_int(output_bpp) - bpp_step_x16);
- if (DISPLAY_VER(display) >= 13)
- return xelpd_dsc_compute_link_config(intel_dp, pipe_config, limits,
- min_bpp_x16, max_bpp_x16, bpp_step_x16, timeslots);
- return icl_dsc_compute_link_config(intel_dp, pipe_config, limits,
- min_bpp_x16, max_bpp_x16, bpp_step_x16, timeslots);
+ return do_dsc_compute_compressed_bpp(intel_dp, pipe_config, limits,
+ min_bpp_x16, max_bpp_x16, bpp_step_x16, timeslots);
}
int intel_dp_dsc_min_src_input_bpc(void)
--
2.39.5
