Commit 61708a47 authored by Rodrigo Siqueira's avatar Rodrigo Siqueira Committed by Alex Deucher
Browse files

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



Add a kernel-doc to the DE-Tile function hook.

Tested-by: default avatarMark Broadworth <mark.broadworth@amd.com>
Reviewed-by: default avatarAurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarRodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 1682bd1a

drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c

+4 −0
Original line number Diff line number Diff line
@@ -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)

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

+15 −0
Original line number Diff line number Diff line
@@ -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);