Commit a9cf6e7f authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Rob Clark
Browse files

drm/msm/a3xx: Implement .gpu_busy 



Add support for gpu_busy on a3xx, which is required for devfreq
support.

Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> #ifc6410
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/523789/
Link: https://lore.kernel.org/r/20230223-topic-opp-v3-5-5f22163cd1df@linaro.org


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 9f251f93

drivers/gpu/drm/msm/adreno/a3xx_gpu.c

+11 −0
Original line number Diff line number Diff line
@@ -477,6 +477,16 @@ static struct msm_gpu_state *a3xx_gpu_state_get(struct msm_gpu *gpu) 
	return state;

}



static u64 a3xx_gpu_busy(struct msm_gpu *gpu, unsigned long *out_sample_rate)

{

	u64 busy_cycles;



	busy_cycles = gpu_read64(gpu, REG_A3XX_RBBM_PERFCTR_RBBM_1_LO);

	*out_sample_rate = clk_get_rate(gpu->core_clk);



	return busy_cycles;

}



static u32 a3xx_get_rptr(struct msm_gpu *gpu, struct msm_ringbuffer *ring)

{

	ring->memptrs->rptr = gpu_read(gpu, REG_AXXX_CP_RB_RPTR);
@@ -498,6 +508,7 @@ static const struct adreno_gpu_funcs funcs = { 
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)

		.show = adreno_show,

#endif

		.gpu_busy = a3xx_gpu_busy,

		.gpu_state_get = a3xx_gpu_state_get,

		.gpu_state_put = adreno_gpu_state_put,

		.create_address_space = adreno_create_address_space,