diff options
| author | Jordan Crouse <jcrouse@codeaurora.org> | 2018-01-10 10:41:54 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2018-01-10 14:30:03 -0500 |
| commit | f91c14ab448af4d9d57350301dd9d6b6a7b6128a (patch) | |
| tree | 4f66782c3d2ee03e302557d40a55499fed4bdc72 /drivers/gpu/drm/msm/adreno | |
| parent | c09513cfebd8d936a7aed3c0302104fb47a4a03a (diff) | |
drm/msm: Add devfreq support for the GPU
Add support for devfreq to dynamically control the GPU frequency.
By default try to use the 'simple_ondemand' governor which can
adjust the frequency based on GPU load.
v2: Fix __aeabi_uldivmod issue from the 0 day bot and use
devfreq_recommended_opp() as suggested by Rob.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 12 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 1 |
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index 56c2c441fabf..7e09d44e4a15 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -600,6 +600,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu) /* Select CP0 to always count cycles */ gpu_write(gpu, REG_A5XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT); + /* Select RBBM0 to countable 6 to get the busy status for devfreq */ + gpu_write(gpu, REG_A5XX_RBBM_PERFCTR_RBBM_SEL_0, 6); + /* Increase VFD cache access so LRZ and other data gets evicted less */ gpu_write(gpu, REG_A5XX_UCHE_CACHE_WAYS, 0x02); @@ -1170,6 +1173,14 @@ static struct msm_ringbuffer *a5xx_active_ring(struct msm_gpu *gpu) return a5xx_gpu->cur_ring; } +static int a5xx_gpu_busy(struct msm_gpu *gpu, uint64_t *value) +{ + *value = gpu_read64(gpu, REG_A5XX_RBBM_PERFCTR_RBBM_0_LO, + REG_A5XX_RBBM_PERFCTR_RBBM_0_HI); + + return 0; +} + static const struct adreno_gpu_funcs funcs = { .base = { .get_param = adreno_get_param, @@ -1185,6 +1196,7 @@ static const struct adreno_gpu_funcs funcs = { #ifdef CONFIG_DEBUG_FS .show = a5xx_show, #endif + .gpu_busy = a5xx_gpu_busy, }, .get_timestamp = a5xx_get_timestamp, }; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index b4bac84b3b4f..de63ff26a062 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -22,7 +22,6 @@ #include "msm_gem.h" #include "msm_mmu.h" - int adreno_get_param(struct msm_gpu *gpu, uint32_t param, uint64_t *value) { struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); |