Merge "msm: kgsl: Add a sysfs node to control IFPC" (e2260db0) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/gpu/msm/adreno_sysfs.c

+53 −0

Original line number	Diff line number	Diff line
		@@ -220,6 +220,23 @@ static int _preemption_store(struct adreno_device *adreno_dev,
		return 0;
		}

		static int _gmu_idle_level_store(struct adreno_device *adreno_dev,
		unsigned int val)
		{
		struct kgsl_device *device = KGSL_DEVICE(adreno_dev);
		struct gmu_device *gmu = &device->gmu;

		mutex_lock(&device->mutex);

		/* Power down the GPU before changing the idle level */
		kgsl_pwrctrl_change_state(device, KGSL_STATE_SUSPEND);
		gmu->idle_level = val;
		kgsl_pwrctrl_change_state(device, KGSL_STATE_SLUMBER);

		mutex_unlock(&device->mutex);
		return 0;
		}

		static unsigned int _preemption_show(struct adreno_device *adreno_dev)
		{
		return adreno_is_preemption_execution_enabled(adreno_dev);
		@@ -268,6 +285,40 @@ static unsigned int _lm_show(struct adreno_device *adreno_dev)
		return test_bit(ADRENO_LM_CTRL, &adreno_dev->pwrctrl_flag);
		}

		static int _ifpc_store(struct adreno_device *adreno_dev, unsigned int val)
		{
		struct kgsl_device *device = KGSL_DEVICE(adreno_dev);
		struct gmu_device *gmu = &device->gmu;
		unsigned int requested_idle_level;

		if (!kgsl_gmu_isenabled(device) \|\|
		!ADRENO_FEATURE(adreno_dev, ADRENO_IFPC))
		return -EINVAL;

		if ((val && gmu->idle_level >= GPU_HW_IFPC) \|\|
		(!val && gmu->idle_level < GPU_HW_IFPC))
		return 0;

		if (val)
		requested_idle_level = GPU_HW_IFPC;
		else {
		if (ADRENO_FEATURE(adreno_dev, ADRENO_SPTP_PC))
		requested_idle_level = GPU_HW_SPTP_PC;
		else
		requested_idle_level = GPU_HW_ACTIVE;
		}

		return _gmu_idle_level_store(adreno_dev, requested_idle_level);
		}

		static unsigned int _ifpc_show(struct adreno_device *adreno_dev)
		{
		struct kgsl_device *device = KGSL_DEVICE(adreno_dev);
		struct gmu_device *gmu = &device->gmu;

		return kgsl_gmu_isenabled(device) && gmu->idle_level >= GPU_HW_IFPC;
		}

		static ssize_t _sysfs_store_u32(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t count)
		@@ -366,6 +417,7 @@ static ADRENO_SYSFS_BOOL(lm);
		static ADRENO_SYSFS_BOOL(preemption);
		static ADRENO_SYSFS_BOOL(hwcg);
		static ADRENO_SYSFS_BOOL(throttling);
		static ADRENO_SYSFS_BOOL(ifpc);



		@@ -386,6 +438,7 @@ static const struct device_attribute *_attr_list[] = {
		&adreno_attr_preempt_level.attr,
		&adreno_attr_usesgmem.attr,
		&adreno_attr_skipsaverestore.attr,
		&adreno_attr_ifpc.attr,
		NULL,
		};