drm/msm: Split out devfreq handling

Before we start adding more cleverness, split it into it's own file.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20210726144653.2180096-2-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>

1 files changed, 26 insertions, 6 deletions

diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index ef41ec09f59c..2e61d05293e6 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -80,6 +80,26 @@ struct msm_gpu_fault_info {
 	const char *block;
 };
 
+/**
+ * struct msm_gpu_devfreq - devfreq related state
+ */
+struct msm_gpu_devfreq {
+	/** devfreq: devfreq instance */
+	struct devfreq *devfreq;
+
+	/**
+	 * busy_cycles:
+	 *
+	 * Used by implementation of gpu->gpu_busy() to track the last
+	 * busy counter value, for calculating elapsed busy cycles since
+	 * last sampling period.
+	 */
+	u64 busy_cycles;
+
+	/** time: Time of last sampling period. */
+	ktime_t time;
+};
+
 struct msm_gpu {
 	const char *name;
 	struct drm_device *dev;
@@ -151,11 +171,7 @@ struct msm_gpu {
 
 	struct drm_gem_object *memptrs_bo;
 
-	struct {
-		struct devfreq *devfreq;
-		u64 busy_cycles;
-		ktime_t time;
-	} devfreq;
+	struct msm_gpu_devfreq devfreq;
 
 	uint32_t suspend_count;
 
@@ -301,7 +317,11 @@ static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val)
 
 int msm_gpu_pm_suspend(struct msm_gpu *gpu);
 int msm_gpu_pm_resume(struct msm_gpu *gpu);
-void msm_gpu_resume_devfreq(struct msm_gpu *gpu);
+
+void msm_devfreq_init(struct msm_gpu *gpu);
+void msm_devfreq_cleanup(struct msm_gpu *gpu);
+void msm_devfreq_resume(struct msm_gpu *gpu);
+void msm_devfreq_suspend(struct msm_gpu *gpu);
 
 int msm_gpu_hw_init(struct msm_gpu *gpu);