From b41e83732b4865e5219707254c52611509c08625 Mon Sep 17 00:00:00 2001 From: Konrad Dybcio Date: Thu, 23 Feb 2023 11:52:02 +0100 Subject: [PATCH] drm/msm/a4xx: Implement .gpu_busy Add support for gpu_busy on a4xx, which is required for devfreq support. Reviewed-by: Dmitry Baryshkov Signed-off-by: Konrad Dybcio 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 --- drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c index 3e09d3a..715436c 100644 --- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c @@ -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, -- 2.7.4