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amdgpu: add function of INFO ioctl for querying video caps 

via the newly added uapi/amdgpu_drm interface

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
main
Leo Liu 2021-01-19 16:51:02 -05:00
parent 50c98335c7
commit 1d13cc1032
3 changed files with 33 additions and 0 deletions
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1
amdgpu/amdgpu-symbols.txt
View File

@ -66,6 +66,7 @@ amdgpu_query_hw_ip_count
amdgpu_query_hw_ip_info
amdgpu_query_info
amdgpu_query_sensor_info
amdgpu_query_video_caps_info
amdgpu_read_mm_registers
amdgpu_va_range_alloc
amdgpu_va_range_free

17
amdgpu/amdgpu.h
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@ -1237,6 +1237,23 @@ int amdgpu_query_gds_info(amdgpu_device_handle dev,
int amdgpu_query_sensor_info(amdgpu_device_handle dev, unsigned sensor_type,
unsigned size, void *value);
/**
* Query information about video capabilities
*
* The return sizeof(struct drm_amdgpu_info_video_caps)
*
* \param dev - \c [in] Device handle. See #amdgpu_device_initialize()
* \param caps_type - \c [in] AMDGPU_INFO_VIDEO_CAPS_DECODE(ENCODE)
* \param size - \c [in] Size of the returned value.
* \param value - \c [out] Pointer to the return value.
*
* \return 0 on success\n
* <0 - Negative POSIX Error code
*
*/
int amdgpu_query_video_caps_info(amdgpu_device_handle dev, unsigned cap_type,
unsigned size, void *value);
/**
* Read a set of consecutive memory-mapped registers.
* Not all registers are allowed to be read by userspace.

15
amdgpu/amdgpu_gpu_info.c
View File

@ -331,3 +331,18 @@ drm_public int amdgpu_query_sensor_info(amdgpu_device_handle dev, unsigned senso
return drmCommandWrite(dev->fd, DRM_AMDGPU_INFO, &request,
sizeof(struct drm_amdgpu_info));
}
drm_public int amdgpu_query_video_caps_info(amdgpu_device_handle dev, unsigned cap_type,
unsigned size, void *value)
{
struct drm_amdgpu_info request;
memset(&request, 0, sizeof(request));
request.return_pointer = (uintptr_t)value;
request.return_size = size;
request.query = AMDGPU_INFO_VIDEO_CAPS;
request.sensor_info.type = cap_type;
return drmCommandWrite(dev->fd, DRM_AMDGPU_INFO, &request,
sizeof(struct drm_amdgpu_info));
}