Commit e56690bb authored by Mario Limonciello's avatar Mario Limonciello Committed by Alex Deucher
Browse files

drm/amd: Read IMU FW version from scratch register during hw_init 



If the IMU version wasn't discovered from the header, such as when
the firmware was directly loaded by PSP then there is no firmware
version to show to userspace from sysfs or IOCTL.

The IMU F/W stores the version in the first scratch register though,
so fetch it in these cases to let the driver export.

Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 4916615f

drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c

+4 −0
Original line number Diff line number Diff line
@@ -4373,6 +4373,10 @@ static int gfx_v11_0_hw_init(void *handle) 
	if (r)

		return r;



	/* get IMU version from HW if it's not set */

	if (!adev->gfx.imu_fw_version)

		adev->gfx.imu_fw_version = RREG32_SOC15(GC, 0, regGFX_IMU_SCRATCH_0);



	return r;

}