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Commit b66758ee authored by Mohammed Mirza Mandayappurath Manzoor's avatar Mohammed Mirza Mandayappurath Manzoor
Browse files

msm: kgsl: Add Battery Current Limiting support for A6xx 



Battery Current Limiting (BCL) prevents voltage droops and peak currents
on battery packs preventing under voltage lockout and over current.

Change-Id: Ie6c3753bbe21a801b9c6ee1ac9aec03c0de156b7
Signed-off-by: default avatarMohammed Mirza Mandayappurath Manzoor <mmandaya@codeaurora.org>
parent 6c24075f

drivers/gpu/msm/adreno.h

+4 −0
Original line number Diff line number Diff line
@@ -109,6 +109,8 @@ 
#define ADRENO_DEPRECATED BIT(19)

/* The target supports ringbuffer level APRIV */

#define ADRENO_APRIV BIT(20)

/* The GMU supports Battery Current Limiting */

#define ADRENO_BCL BIT(21)

/*

 * Adreno GPU quirks - control bits for various workarounds

 */
@@ -528,6 +530,8 @@ struct adreno_device { 
	bool throttling_enabled;

	/** @sptp_pc_enabled: True if SPTP power collapse is enabled on a5xx */

	bool sptp_pc_enabled;

	/** @bcl_enabled: True if BCL is enabled */

	bool bcl_enabled;

	struct kgsl_memdesc *profile_buffer;

	unsigned int profile_index;

	struct kgsl_memdesc *pwrup_reglist;

drivers/gpu/msm/adreno_a6xx_gmu.c

+3 −0
Original line number Diff line number Diff line
@@ -2627,6 +2627,9 @@ static int a6xx_gmu_probe(struct kgsl_device *device, 
	else

		gmu->idle_level = GPU_HW_ACTIVE;



	if (ADRENO_FEATURE(adreno_dev, ADRENO_BCL))

		adreno_dev->bcl_enabled = true;



	a6xx_gmu_acd_probe(device, gmu, pdev->dev.of_node);



	set_bit(GMU_ENABLED, &device->gmu_core.flags);

drivers/gpu/msm/adreno_a6xx_hfi.c

+16 −0
Original line number Diff line number Diff line
@@ -635,6 +635,18 @@ static int a6xx_hfi_verify_fw_version(struct adreno_device *adreno_dev) 
	return 0;

}



static int a6xx_hfi_send_bcl_feature_ctrl(struct adreno_device *adreno_dev)

{

	int ret;



	if (!adreno_dev->bcl_enabled)

		return 0;



	ret = a6xx_hfi_send_feature_ctrl(adreno_dev, HFI_FEATURE_BCL, 1, 0);



	return ret;

}



static int a6xx_hfi_send_lm_feature_ctrl(struct adreno_device *adreno_dev)

{

	struct kgsl_device *device = KGSL_DEVICE(adreno_dev);
@@ -739,6 +751,10 @@ int a6xx_hfi_start(struct adreno_device *adreno_dev) 
		if (result)

			goto err;



		result = a6xx_hfi_send_bcl_feature_ctrl(adreno_dev);

		if (result)

			goto err;



		result = a6xx_hfi_send_core_fw_start(adreno_dev);

		if (result)

			goto err;

drivers/gpu/msm/adreno_sysfs.c

+17 −0
Original line number Diff line number Diff line
@@ -264,6 +264,21 @@ static int _acd_store(struct adreno_device *adreno_dev, bool val) 
	return gmu_core_dev_acd_set(KGSL_DEVICE(adreno_dev), val);

}



static bool _bcl_show(struct adreno_device *adreno_dev)

{

	return adreno_dev->bcl_enabled;

}



static int _bcl_store(struct adreno_device *adreno_dev, bool val)

{

	if (!ADRENO_FEATURE(adreno_dev, ADRENO_BCL) ||

				adreno_dev->bcl_enabled == val)

		return 0;



	return adreno_power_cycle_bool(adreno_dev, &adreno_dev->bcl_enabled,

					val);

}



static ssize_t _sysfs_store_u32(struct device *dev,

		struct device_attribute *attr,

		const char *buf, size_t count)
@@ -376,6 +391,7 @@ static ADRENO_SYSFS_BOOL(throttling); 
static ADRENO_SYSFS_BOOL(ifpc);

static ADRENO_SYSFS_RO_U32(ifpc_count);

static ADRENO_SYSFS_BOOL(acd);

static ADRENO_SYSFS_BOOL(bcl);





static const struct attribute *_attr_list[] = {
@@ -399,6 +415,7 @@ static const struct attribute *_attr_list[] = { 
	&adreno_attr_ifpc_count.attr.attr,

	&adreno_attr_preempt_count.attr.attr,

	&adreno_attr_acd.attr.attr,

	&adreno_attr_bcl.attr.attr,

	NULL,

};