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Commit 9d787473 authored by Jordan Crouse's avatar Jordan Crouse
Browse files

drm/msm: Add a parameter query for the number of ringbuffers 



In order to manage ringbuffer priority to its fullest userspace
should know how many ringbuffers it has to work with. Add a
parameter to return the number of active rings.

Change-Id: Ic0dedbada6010dd5122e8409141fd23b414d73e4
Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
parent 48db6e47

drivers/gpu/drm/msm/adreno/adreno_gpu.c

+3 −0
Original line number Diff line number Diff line
@@ -51,6 +51,9 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value) 
		if (adreno_gpu->funcs->get_timestamp)

			return adreno_gpu->funcs->get_timestamp(gpu, value);

		return -EINVAL;

	case MSM_PARAM_NR_RINGS:

		*value = gpu->nr_rings;

		return 0;

	default:

		DBG("%s: invalid param: %u", gpu->name, param);

		return -EINVAL;

include/uapi/drm/msm_drm.h

+1 −0
Original line number Diff line number Diff line
@@ -103,6 +103,7 @@ struct drm_msm_ext_panel_hdr_properties { 
#define MSM_PARAM_MAX_FREQ   0x04

#define MSM_PARAM_TIMESTAMP  0x05

#define MSM_PARAM_GMEM_BASE  0x06

#define MSM_PARAM_NR_RINGS   0x07



struct drm_msm_param {

	__u32 pipe;           /* in, MSM_PIPE_x */