diff options
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/a4xx_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c index 3d07a5a1f338..b371f1c04a47 100644 --- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c @@ -200,6 +200,11 @@ static int a4xx_hw_init(struct msm_gpu *gpu) /* Turn on performance counters: */ gpu_write(gpu, REG_A4XX_RBBM_PERFCTR_CTL, 0x01); + /* use the first CP counter for timestamp queries.. userspace may set + * this as well but it selects the same counter/countable: + */ + gpu_write(gpu, REG_A4XX_CP_PERFCTR_CP_SEL_0, CP_ALWAYS_COUNT); + if (adreno_is_a430(adreno_gpu)) gpu_write(gpu, REG_A4XX_UCHE_CACHE_WAYS_VFD, 0x07); @@ -294,6 +299,7 @@ static int a4xx_hw_init(struct msm_gpu *gpu) gpu_write(gpu, REG_A4XX_CP_ME_CNTL, 0); a4xx_me_init(gpu); + return 0; } @@ -585,6 +591,22 @@ static int a4xx_pm_suspend(struct msm_gpu *gpu) { return 0; } +static int a4xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value) +{ + uint32_t hi, lo, tmp; + + tmp = gpu_read(gpu, REG_A4XX_RBBM_PERFCTR_CP_0_HI); + do { + hi = tmp; + lo = gpu_read(gpu, REG_A4XX_RBBM_PERFCTR_CP_0_LO); + tmp = gpu_read(gpu, REG_A4XX_RBBM_PERFCTR_CP_0_HI); + } while (tmp != hi); + + *value = (((uint64_t)hi) << 32) | lo; + + return 0; +} + static const struct adreno_gpu_funcs funcs = { .base = { .get_param = adreno_get_param, @@ -602,6 +624,7 @@ static const struct adreno_gpu_funcs funcs = { .show = a4xx_show, #endif }, + .get_timestamp = a4xx_get_timestamp, }; struct msm_gpu *a4xx_gpu_init(struct drm_device *dev) |