drivers/gpu/drm/amd/display/dc/core/dc_stat.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/core/dc_stat.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/core/dc_stat.c
Extension
.c
Size
2946 bytes
Lines
91
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "dc/dc_stat.h"
#include "dmub/dmub_srv_stat.h"
#include "dc_dmub_srv.h"

/**
 * DOC: DC STAT Interface
 *
 * These interfaces are called without acquiring DAL and DC locks.
 * Hence, there is limitations on whese interfaces can access. Only
 * variables exclusively defined for these interfaces can be modified.
 */

/**
 *  dc_stat_get_dmub_notification
 *
 * Calls dmub layer to retrieve dmub notification
 *
 * @dc: dc structure
 * @notify: dmub notification structure
 *
 * Returns
 *     None
 */
void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification *notify)
{
	/**
	 * This function is called without dal and dc locks, so
	 * we shall not modify any dc, dc_dmub_srv or dmub variables
	 * except variables exclusively accessed by this function
	 */
	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
	enum dmub_status status;

	status = dmub_srv_stat_get_notification(dmub, notify);
	ASSERT(status == DMUB_STATUS_OK);

	/* For HPD/HPD RX, convert dpia port index into link index */
	if (notify->type == DMUB_NOTIFICATION_HPD ||
	    notify->type == DMUB_NOTIFICATION_HPD_IRQ ||
	    notify->type == DMUB_NOTIFICATION_AUX_REPLY ||
	    notify->type == DMUB_NOTIFICATION_DPIA_NOTIFICATION ||
	    notify->type == DMUB_NOTIFICATION_SET_CONFIG_REPLY) {
		notify->link_index =
			get_link_index_from_dpia_port_index(dc, notify->instance);
	}
}

/**
 * dc_stat_get_dmub_dataout
 *
 * Calls dmub layer to retrieve dmub gpint dataout
 *
 * @dc: dc structure
 * @dataout: dmub gpint dataout
 *
 * Returns
 *     None
 */
void dc_stat_get_dmub_dataout(const struct dc *dc, uint32_t *dataout)
{
	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
	enum dmub_status status;

	status = dmub_srv_get_gpint_dataout(dmub, dataout);
	ASSERT(status == DMUB_STATUS_OK);
}

Annotation

Implementation Notes