From: Joshua Aberback <joshua.aberback@xxxxxxx>
[Why]
For some use cases we need to be able to adjust the maximum target bpp
allowed by DSC policy.
[How]
New interface dc_dsc_policy_set_max_target_bpp_limit
Signed-off-by: Joshua Aberback <joshua.aberback@xxxxxxx>
Reviewed-by: Nikola Cornij <Nikola.Cornij@xxxxxxx>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dc_dsc.h | 2 ++
drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 14 +++++++++++---
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dsc.h b/drivers/gpu/drm/amd/display/dc/dc_dsc.h
index 8ec09813ee17..7ece8eb5f48c 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_dsc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_dsc.h
@@ -77,4 +77,6 @@ bool dc_dsc_compute_config(
void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing,
struct dc_dsc_policy *policy);
+void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit);
+
#endif
diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
index d2423ad1fac2..71b048363506 100644
--- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c
@@ -29,6 +29,9 @@
/* This module's internal functions */
+/* default DSC policy target bitrate limit is 16bpp */
+static uint32_t dsc_policy_max_target_bpp_limit = 16;
+
static uint32_t dc_dsc_bandwidth_in_kbps_from_timing(
const struct dc_crtc_timing *timing)
{
@@ -951,7 +954,12 @@ void dc_dsc_get_policy_for_timing(const struct dc_crtc_timing *timing, struct dc
default:
return;
}
- /* internal upper limit to 16 bpp */
- if (policy->max_target_bpp > 16)
- policy->max_target_bpp = 16;
+ /* internal upper limit, default 16 bpp */
+ if (policy->max_target_bpp > dsc_policy_max_target_bpp_limit)
+ policy->max_target_bpp = dsc_policy_max_target_bpp_limit;
+}
+
+void dc_dsc_policy_set_max_target_bpp_limit(uint32_t limit)
+{
+ dsc_policy_max_target_bpp_limit = limit;
}
--
2.24.0
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