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xilinx: versal: Implement device related PM APIs 

Implement below device related PM APIs:
  - Request device
  - Release device
  - Set requirement
  - Get device status

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I9d84b9ee1be3ee6c5f27a4d6dc324113fc1acb68
This commit is contained in:
Tejas Patel 2019-01-08 01:46:37 -08:00 committed by Jolly Shah
parent fbb32695a2
commit cf1e56a4e7
3 changed files with 103 additions and 0 deletions
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77
plat/xilinx/versal/pm_service/pm_api_sys.c
View File

@ -158,3 +158,80 @@ enum pm_ret_status pm_req_suspend(uint32_t target, uint8_t ack,
else
return pm_ipi_send(primary_proc, payload);
}
/**
* pm_request_device() - Request a device
* @device_id Device ID
* @capabilities Requested capabilities for the device
* @qos Required Quality of Service
* @ack Flag to specify whether acknowledge requested
*
* @return Returns status, either success or error+reason
*/
enum pm_ret_status pm_request_device(uint32_t device_id, uint32_t capabilities,
uint32_t qos, uint32_t ack)
{
uint32_t payload[PAYLOAD_ARG_CNT];
/* Send request to the PMC */
PM_PACK_PAYLOAD5(payload, LIBPM_MODULE_ID, PM_REQUEST_DEVICE,
device_id, capabilities, qos, ack);
return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
}
/**
* pm_release_device() - Release a device
* @device_id Device ID
*
* @return Returns status, either success or error+reason
*/
enum pm_ret_status pm_release_device(uint32_t device_id)
{
uint32_t payload[PAYLOAD_ARG_CNT];
/* Send request to the PMC */
PM_PACK_PAYLOAD2(payload, LIBPM_MODULE_ID, PM_RELEASE_DEVICE,
device_id);
return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
}
/**
* pm_set_requirement() - Set requirement for the device
* @device_id Device ID
* @capabilities Requested capabilities for the device
* @latency Requested maximum latency
* @qos Required Quality of Service
*
* @return Returns status, either success or error+reason
*/
enum pm_ret_status pm_set_requirement(uint32_t device_id, uint32_t capabilities,
uint32_t latency, uint32_t qos)
{
uint32_t payload[PAYLOAD_ARG_CNT];
/* Send request to the PMC */
PM_PACK_PAYLOAD5(payload, LIBPM_MODULE_ID, PM_SET_REQUIREMENT,
device_id, capabilities, latency, qos);
return pm_ipi_send_sync(primary_proc, payload, NULL, 0);
}
/**
* pm_get_device_status() - Get device's status
* @device_id Device ID
* @response Buffer to store device status response
*
* @return Returns status, either success or error+reason
*/
enum pm_ret_status pm_get_device_status(uint32_t device_id, uint32_t *response)
{
uint32_t payload[PAYLOAD_ARG_CNT];
/* Send request to the PMC */
PM_PACK_PAYLOAD2(payload, LIBPM_MODULE_ID, PM_GET_DEVICE_STATUS,
device_id);
return pm_ipi_send_sync(primary_proc, payload, response, 3);
}

6
plat/xilinx/versal/pm_service/pm_api_sys.h
View File

@ -24,5 +24,11 @@ enum pm_ret_status pm_req_suspend(uint32_t target,
uint8_t ack,
unsigned int latency,
unsigned int state);
enum pm_ret_status pm_request_device(uint32_t device_id, uint32_t capabilities,
uint32_t qos, uint32_t ack);
enum pm_ret_status pm_release_device(uint32_t device_id);
enum pm_ret_status pm_set_requirement(uint32_t device_id, uint32_t capabilities,
uint32_t latency, uint32_t qos);
enum pm_ret_status pm_get_device_status(uint32_t device_id, uint32_t *response);
#endif /* PM_API_SYS_H */

20
plat/xilinx/versal/pm_service/pm_defs.h
View File

@ -24,9 +24,13 @@
/* PM API ids */
#define PM_GET_API_VERSION 1U
#define PM_GET_DEVICE_STATUS 3U
#define PM_REQ_SUSPEND 6U
#define PM_SELF_SUSPEND 7U
#define PM_ABORT_SUSPEND 9U
#define PM_REQUEST_DEVICE 13U
#define PM_RELEASE_DEVICE 14U
#define PM_SET_REQUIREMENT 15U
/*********************************************************************
* Enum definitions
@ -39,6 +43,22 @@ enum pm_abort_reason {
ABORT_REASON_UNKNOWN,
};
/**
* Subsystem IDs
*/
typedef enum {
XPM_SUBSYSID_PMC,
XPM_SUBSYSID_PSM,
XPM_SUBSYSID_APU,
XPM_SUBSYSID_RPU0_LOCK,
XPM_SUBSYSID_RPU0_0,
XPM_SUBSYSID_RPU0_1,
XPM_SUBSYSID_DDR0,
XPM_SUBSYSID_ME,
XPM_SUBSYSID_PL,
XPM_SUBSYSID_MAX,
} XPm_SubsystemId;
/**
* @PM_RET_SUCCESS: success
* @PM_RET_ERROR_ARGS: illegal arguments provided (deprecated)