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drm/msm/a4xx: Implement .gpu_busy 

Add support for gpu_busy on a4xx, which is required for devfreq
support.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/523791/
Link: https://lore.kernel.org/r/20230223-topic-opp-v3-6-5f22163cd1df@linaro.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Konrad Dybcio 2023-02-23 11:52:02 +01:00 committed by Rob Clark
parent a9cf6e7fc3
commit b41e83732b
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/msm/adreno/a4xx_gpu.c
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@ -611,6 +611,16 @@ static int a4xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value)
return 0;
}
static u64 a4xx_gpu_busy(struct msm_gpu *gpu, unsigned long *out_sample_rate)
{
u64 busy_cycles;
busy_cycles = gpu_read64(gpu, REG_A4XX_RBBM_PERFCTR_RBBM_1_LO);
*out_sample_rate = clk_get_rate(gpu->core_clk);
return busy_cycles;
}
static u32 a4xx_get_rptr(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
{
ring->memptrs->rptr = gpu_read(gpu, REG_A4XX_CP_RB_RPTR);
@ -632,6 +642,7 @@ static const struct adreno_gpu_funcs funcs = {
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
.show = adreno_show,
#endif
.gpu_busy = a4xx_gpu_busy,
.gpu_state_get = a4xx_gpu_state_get,
.gpu_state_put = adreno_gpu_state_put,
.create_address_space = adreno_create_address_space,