diff options
| author | Sathishkumar S <sathishkumar.sundararaju@amd.com> | 2021-05-10 19:30:23 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-01 22:36:48 -0400 |
| commit | 16eb48c62bd3ff1a523cd1d59591e694bd60277a (patch) | |
| tree | a779441e58e9b5b6243d3013d2209fcad1eccbc7 /drivers/gpu/drm/amd/include/amd_acpi.h | |
| parent | 8a81028b4f7afafd138b8f70d3ce4edc75962d08 (diff) | |
drm/amdgpu: support atcs method powershift (v4)
add support to handle ATCS method for power shift control.
used to communicate dGPU device state to SBIOS.
V2: use defined acpi func for checking psc support (Lijo)
fix alignment (Shashank)
V3: rebased on unified ATCS handling (Alex)
V4: rebased on ATPX/ATCS structures global (Alex)
Signed-off-by: Sathishkumar S <sathishkumar.sundararaju@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/include/amd_acpi.h')
| -rw-r--r-- | drivers/gpu/drm/amd/include/amd_acpi.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/amd_acpi.h b/drivers/gpu/drm/amd/include/amd_acpi.h index c72cbfe8f684..2d089d30518f 100644 --- a/drivers/gpu/drm/amd/include/amd_acpi.h +++ b/drivers/gpu/drm/amd/include/amd_acpi.h @@ -103,6 +103,13 @@ struct atcs_pref_req_output { u8 ret_val; /* return value */ } __packed; +struct atcs_pwr_shift_input { + u16 size; /* structure size in bytes (includes size field) */ + u16 dgpu_id; /* client id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) */ + u8 dev_acpi_state; /* D0 = 0, D3 hot = 3 */ + u8 drv_state; /* 0 = operational, 1 = not operational */ +} __packed; + /* AMD hw uses four ACPI control methods: * 1. ATIF * ARG0: (ACPI_INTEGER) function code @@ -418,6 +425,7 @@ struct atcs_pref_req_output { # define ATCS_PCIE_PERFORMANCE_REQUEST_SUPPORTED (1 << 1) # define ATCS_PCIE_DEVICE_READY_NOTIFICATION_SUPPORTED (1 << 2) # define ATCS_SET_PCIE_BUS_WIDTH_SUPPORTED (1 << 3) +# define ATCS_SET_POWER_SHIFT_CONTROL_SUPPORTED (1 << 7) #define ATCS_FUNCTION_GET_EXTERNAL_STATE 0x1 /* ARG0: ATCS_FUNCTION_GET_EXTERNAL_STATE * ARG1: none @@ -472,4 +480,14 @@ struct atcs_pref_req_output { * BYTE - number of active lanes */ +#define ATCS_FUNCTION_POWER_SHIFT_CONTROL 0x8 +/* ARG0: ATCS_FUNCTION_POWER_SHIFT_CONTROL + * ARG1: + * WORD - structure size in bytes (includes size field) + * WORD - dGPU id (bit 2-0: func num, 7-3: dev num, 15-8: bus num) + * BYTE - Device ACPI state + * BYTE - Driver state + * OUTPUT: none + */ + #endif |