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drm/amd/display: Add psr get_state call

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[Why]
Driver needs to know PSR state.

[How]
Use GPINT to call to firmware and get psr state.

Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wyatt Wood
2020-01-20 15:52:44 -05:00
committed by Alex Deucher
parent 71bbb1fcb1
commit 115c7e7f05
3 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -2451,7 +2451,7 @@ bool dc_link_get_psr_state(const struct dc_link *link, uint32_t *psr_state)
struct dmub_psr *psr = dc->res_pool->psr;
if (psr != NULL && link->psr_feature_enabled)
psr->funcs->psr_get_state(psr_state);
psr->funcs->psr_get_state(psr, psr_state);
else if (dmcu != NULL && link->psr_feature_enabled)
dmcu->funcs->get_psr_state(dmcu, psr_state);

13
drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
View File

@ -29,17 +29,20 @@
#include "../../dmub/inc/dmub_srv.h"
#include "dmub_fw_state.h"
#include "core_types.h"
#include "ipp.h"
#define MAX_PIPES 6
/**
* Get PSR state from firmware.
*/
static void dmub_psr_get_state(uint32_t *psr_state)
static void dmub_psr_get_state(struct dmub_psr *dmub, uint32_t *psr_state)
{
// Not yet implemented
// Trigger GPINT interrupt from firmware
struct dmub_srv *srv = dmub->ctx->dmub_srv->dmub;
// Send gpint command and wait for ack
dmub_srv_send_gpint_command(srv, DMUB_GPINT__GET_PSR_STATE, 0, 30);
dmub_srv_get_gpint_response(srv, psr_state);
}
/**
@ -100,7 +103,7 @@ static void dmub_psr_set_level(struct dmub_psr *dmub, uint16_t psr_level)
uint32_t psr_state = 0;
struct dc_context *dc = dmub->ctx;
dmub_psr_get_state(&psr_state);
dmub_psr_get_state(dmub, &psr_state);
if (psr_state == 0)
return;

2
drivers/gpu/drm/amd/display/dc/dce/dmub_psr.h
View File

@ -36,7 +36,7 @@ struct dmub_psr {
struct dmub_psr_funcs {
bool (*psr_copy_settings)(struct dmub_psr *dmub, struct dc_link *link, struct psr_context *psr_context);
void (*psr_enable)(struct dmub_psr *dmub, bool enable);
void (*psr_get_state)(uint32_t *psr_state);
void (*psr_get_state)(struct dmub_psr *dmub, uint32_t *psr_state);
void (*psr_set_level)(struct dmub_psr *dmub, uint16_t psr_level);
};