diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2547-drm-amd-display-Enable-DSC-power-gating-for-DSC-stre.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2547-drm-amd-display-Enable-DSC-power-gating-for-DSC-stre.patch | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2547-drm-amd-display-Enable-DSC-power-gating-for-DSC-stre.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2547-drm-amd-display-Enable-DSC-power-gating-for-DSC-stre.patch new file mode 100644 index 00000000..5bd66fb5 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/2547-drm-amd-display-Enable-DSC-power-gating-for-DSC-stre.patch @@ -0,0 +1,74 @@ +From 33f2992f573d7679e4aecab439ec1d8239f89473 Mon Sep 17 00:00:00 2001 +From: Nikola Cornij <nikola.cornij@amd.com> +Date: Wed, 8 May 2019 14:36:03 -0400 +Subject: [PATCH 2547/2940] drm/amd/display: Enable DSC power-gating for DSC + streams + +[why] +Currently DSC power gating is disabled by default because the power +transition doesn't happen, causing a crash on some systems + +[how] +Fix the lack of power state transition and enable DSC power gating +by default. + +Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> +Reviewed-by: Martin Leung <Martin.Leung@amd.com> +Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com> +Acked-by: Leo Li <sunpeng.li@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c | 8 ++++++++ + drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c | 3 --- + 2 files changed, 8 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +index f788a39a1df1..914071393d1c 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c +@@ -222,6 +222,7 @@ static void dcn20_dsc_pg_control( + { + uint32_t power_gate = power_on ? 0 : 1; + uint32_t pwr_status = power_on ? 0 : 2; ++ uint32_t org_ip_request_cntl = 0; + + if (hws->ctx->dc->debug.disable_dsc_power_gate) + return; +@@ -229,6 +230,10 @@ static void dcn20_dsc_pg_control( + if (REG(DOMAIN16_PG_CONFIG) == 0) + return; + ++ REG_GET(DC_IP_REQUEST_CNTL, IP_REQUEST_EN, &org_ip_request_cntl); ++ if (org_ip_request_cntl == 0) ++ REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 1); ++ + switch (dsc_inst) { + case 0: /* DSC0 */ + REG_UPDATE(DOMAIN16_PG_CONFIG, +@@ -282,6 +287,9 @@ static void dcn20_dsc_pg_control( + BREAK_TO_DEBUGGER(); + break; + } ++ ++ if (org_ip_request_cntl == 0) ++ REG_SET(DC_IP_REQUEST_CNTL, 0, IP_REQUEST_EN, 0); + } + #endif + +diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +index f2c2cbf4114b..d726f36c5e38 100644 +--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c ++++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c +@@ -724,9 +724,6 @@ static const struct dc_debug_options debug_defaults_diags = { + .disable_pplib_wm_range = true, + .disable_stutter = true, + .scl_reset_length10 = true, +-#ifdef CONFIG_DRM_AMD_DC_DSC_SUPPORT +- .disable_dsc_power_gate = true, +-#endif + }; + + void dcn20_dpp_destroy(struct dpp **dpp) +-- +2.17.1 + |