drm/msm: add chip-id param

Some of the w/a or different behavior of userspace blob driver seem to
be keyed to gpu patch revision, rather than gpu-id.  So expose the full
chip-id to userspace so it can DTRT.

Signed-off-by: Rob Clark <robdclark@gmail.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 7a11563379b8..28ca8cd8b09e 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -73,6 +73,12 @@ int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value)
         case MSM_PARAM_GMEM_SIZE:
                 *value = adreno_gpu->gmem;
                 return 0;
+        case MSM_PARAM_CHIP_ID:
+                *value = adreno_gpu->rev.patchid |
+                                (adreno_gpu->rev.minor << 8) |
+                                (adreno_gpu->rev.major << 16) |
+                                (adreno_gpu->rev.core << 24);
+                return 0;
         default:
                 DBG("%s: invalid param: %u", gpu->name, param);
                 return -EINVAL;
diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h
index d3c62074016d..bf91a78a0b0e 100644
--- a/include/uapi/drm/msm_drm.h
+++ b/include/uapi/drm/msm_drm.h
@@ -50,6 +50,7 @@ struct drm_msm_timespec {
 
 #define MSM_PARAM_GPU_ID     0x01
 #define MSM_PARAM_GMEM_SIZE  0x02
+#define MSM_PARAM_CHIP_ID    0x03
 
 struct drm_msm_param {
         uint32_t pipe;           /* in, MSM_PIPE_x */