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Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0112-drm-amd-display-add-method-to-check-for-supported-ra.patch')
-rw-r--r--meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0112-drm-amd-display-add-method-to-check-for-supported-ra.patch120
1 files changed, 120 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0112-drm-amd-display-add-method-to-check-for-supported-ra.patch b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0112-drm-amd-display-add-method-to-check-for-supported-ra.patch
new file mode 100644
index 00000000..d114ea46
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux-4.19/linux-yocto-4.19.8/0112-drm-amd-display-add-method-to-check-for-supported-ra.patch
@@ -0,0 +1,120 @@
+From 2b6c6d1279abee4ec2d432168fdd1142b2469879 Mon Sep 17 00:00:00 2001
+From: Anthony Koo <Anthony.Koo@amd.com>
+Date: Wed, 4 Apr 2018 20:59:43 -0400
+Subject: [PATCH 0112/2940] drm/amd/display: add method to check for supported
+ range
+
+Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
+Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
+Acked-by: Harry Wentland <harry.wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ .../amd/display/modules/freesync/freesync.c | 64 +++++++++++++++++--
+ .../amd/display/modules/inc/mod_freesync.h | 7 ++
+ 2 files changed, 65 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+index 5e12e463c06a..4af73a72b9a9 100644
+--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
++++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+@@ -168,6 +168,21 @@ static unsigned int calc_v_total_from_duration(
+ return v_total;
+ }
+
++static unsigned long long calc_nominal_field_rate(const struct dc_stream_state *stream)
++{
++ unsigned long long nominal_field_rate_in_uhz = 0;
++
++ /* Calculate nominal field rate for stream */
++ nominal_field_rate_in_uhz = stream->timing.pix_clk_khz;
++ nominal_field_rate_in_uhz *= 1000ULL * 1000ULL * 1000ULL;
++ nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz,
++ stream->timing.h_total);
++ nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz,
++ stream->timing.v_total);
++
++ return nominal_field_rate_in_uhz;
++}
++
+ static void update_v_total_for_static_ramp(
+ struct core_freesync *core_freesync,
+ const struct dc_stream_state *stream,
+@@ -623,12 +638,7 @@ void mod_freesync_build_vrr_params(struct mod_freesync *mod_freesync,
+ core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
+
+ /* Calculate nominal field rate for stream */
+- nominal_field_rate_in_uhz = stream->timing.pix_clk_khz;
+- nominal_field_rate_in_uhz *= 1000ULL * 1000ULL * 1000ULL;
+- nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz,
+- stream->timing.h_total);
+- nominal_field_rate_in_uhz = div_u64(nominal_field_rate_in_uhz,
+- stream->timing.v_total);
++ nominal_field_rate_in_uhz = calc_nominal_field_rate(stream);
+
+ min_refresh_in_uhz = in_config->min_refresh_in_uhz;
+ max_refresh_in_uhz = in_config->max_refresh_in_uhz;
+@@ -878,3 +888,45 @@ void mod_freesync_get_settings(struct mod_freesync *mod_freesync,
+ }
+ }
+
++bool mod_freesync_is_valid_range(struct mod_freesync *mod_freesync,
++ const struct dc_stream_state *stream,
++ uint32_t min_refresh_cap_in_uhz,
++ uint32_t max_refresh_cap_in_uhz,
++ uint32_t min_refresh_request_in_uhz,
++ uint32_t max_refresh_request_in_uhz)
++{
++ /* Calculate nominal field rate for stream */
++ unsigned long long nominal_field_rate_in_uhz =
++ calc_nominal_field_rate(stream);
++
++ // Check nominal is within range
++ if (nominal_field_rate_in_uhz > max_refresh_cap_in_uhz ||
++ nominal_field_rate_in_uhz < min_refresh_cap_in_uhz)
++ return false;
++
++ // If nominal is less than max, limit the max allowed refresh rate
++ if (nominal_field_rate_in_uhz < max_refresh_cap_in_uhz)
++ max_refresh_cap_in_uhz = nominal_field_rate_in_uhz;
++
++ // Don't allow min > max
++ if (min_refresh_request_in_uhz > max_refresh_request_in_uhz)
++ return false;
++
++ // Check min is within range
++ if (min_refresh_request_in_uhz > max_refresh_cap_in_uhz ||
++ min_refresh_request_in_uhz < min_refresh_cap_in_uhz)
++ return false;
++
++ // Check max is within range
++ if (max_refresh_request_in_uhz > max_refresh_cap_in_uhz ||
++ max_refresh_request_in_uhz < min_refresh_cap_in_uhz)
++ return false;
++
++ // For variable range, check for at least 10 Hz range
++ if ((max_refresh_request_in_uhz != min_refresh_request_in_uhz) &&
++ (max_refresh_request_in_uhz - min_refresh_request_in_uhz < 10000000))
++ return false;
++
++ return true;
++}
++
+diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
+index bd75ca5f1cd3..e7d77bb6209f 100644
+--- a/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
++++ b/drivers/gpu/drm/amd/display/modules/inc/mod_freesync.h
+@@ -159,4 +159,11 @@ void mod_freesync_handle_v_update(struct mod_freesync *mod_freesync,
+ const struct dc_stream_state *stream,
+ struct mod_vrr_params *in_out_vrr);
+
++bool mod_freesync_is_valid_range(struct mod_freesync *mod_freesync,
++ const struct dc_stream_state *stream,
++ uint32_t min_refresh_cap_in_uhz,
++ uint32_t max_refresh_cap_in_uhz,
++ uint32_t min_refresh_request_in_uhz,
++ uint32_t max_refresh_request_in_uhz);
++
+ #endif
+--
+2.17.1
+