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drm/amd/display: Add DEC/CRB basic doc

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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>
This commit is contained in:
Rodrigo Siqueira
2022-10-20 11:46:58 -04:00
committed by Alex Deucher
parent 1682bd1a6b
commit 61708a47e8
2 changed files with 19 additions and 0 deletions
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4
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
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@@ -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)

15
drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
View File

@@ -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);