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drm/amdgpu: fix to clear ASIC INIT COMPLETE bit on resuming phase

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ASIC_INIT_COMPLETE bit must be cleared during S3 resuming phase,
because VBIOS will check the bit to decide if execute ASIC_Init
posting via kernel driver.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2017-04-10 09:29:13 +08:00 committed by Alex Deucher
parent b4de2c5aab
commit 692bb1ac03
2 changed files with 13 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
View File

@ -1727,6 +1727,12 @@ void amdgpu_atombios_scratch_regs_restore(struct amdgpu_device *adev)
{
int i;
/*
* VBIOS will check ASIC_INIT_COMPLETE bit to decide if
* execute ASIC_Init posting via driver
*/
adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK;
for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
WREG32(mmBIOS_SCRATCH_0 + i, adev->bios_scratch[i]);
}

7
drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
View File

@ -26,6 +26,7 @@
#include "atomfirmware.h"
#include "amdgpu_atomfirmware.h"
#include "atom.h"
#include "atombios.h"
#define get_index_into_master_table(master_table, table_name) (offsetof(struct master_table, table_name) / sizeof(uint16_t))
@ -77,6 +78,12 @@ void amdgpu_atomfirmware_scratch_regs_restore(struct amdgpu_device *adev)
{
int i;
/*
* VBIOS will check ASIC_INIT_COMPLETE bit to decide if
* execute ASIC_Init posting via driver
*/
adev->bios_scratch[7] &= ~ATOM_S7_ASIC_INIT_COMPLETE_MASK;
for (i = 0; i < AMDGPU_BIOS_NUM_SCRATCH; i++)
WREG32(adev->bios_scratch_reg_offset + i, adev->bios_scratch[i]);
}