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| author | Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> | 2022-10-20 11:46:58 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-10-27 14:45:39 -0400 |
| commit | 61708a47e84bc458fae9fbc8a9070fb62a9bcf6d (patch) | |
| tree | 44b0cfbe58ae34ca5f6bd1ceff3c097af2491129 /drivers/gpu | |
| parent | 1682bd1a6b5fb094e914d9b73b711821fd84dcbd (diff) | |
| download | linux-stable-61708a47e84bc458fae9fbc8a9070fb62a9bcf6d.tar.gz linux-stable-61708a47e84bc458fae9fbc8a9070fb62a9bcf6d.tar.bz2 linux-stable-61708a47e84bc458fae9fbc8a9070fb62a9bcf6d.zip | |
drm/amd/display: Add DEC/CRB basic doc
Add a kernel-doc to the DE-Tile function hook.
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Aurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 15 |
2 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c index 9fbb72369c10..a88a71460521 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c @@ -41,6 +41,10 @@ #define FN(reg_name, field_name) \ hubbub2->shifts->field_name, hubbub2->masks->field_name +/** + * @DCN32_CRB_SEGMENT_SIZE_KB: Maximum Configurable Return Buffer size for + * DCN32 + */ #define DCN32_CRB_SEGMENT_SIZE_KB 64 static void dcn32_init_crb(struct hubbub *hubbub) diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h index e7571c6f5ead..58f758fcbce1 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h @@ -167,6 +167,21 @@ struct hubbub_funcs { void (*force_pstate_change_control)(struct hubbub *hubbub, bool force, bool allow); void (*init_watermarks)(struct hubbub *hubbub); + + /** + * @program_det_size: + * + * DE-Tile buffers (DET) is a memory that is used to convert the tiled + * data into linear, which the rest of the display can use to generate + * the graphics output. One of the main features of this component is + * that each pipe has a configurable DET buffer which means that when a + * pipe is not enabled, the device can assign the memory to other + * enabled pipes to try to be more efficient. + * + * DET logic is handled by dchubbub. Some ASICs provide a feature named + * Configurable Return Buffer (CRB) segments which can be allocated to + * compressed or detiled buffers. + */ void (*program_det_size)(struct hubbub *hubbub, int hubp_inst, unsigned det_buffer_size_in_kbyte); void (*program_compbuf_size)(struct hubbub *hubbub, unsigned compbuf_size_kb, bool safe_to_increase); void (*init_crb)(struct hubbub *hubbub); |