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msm: kgsl: Add Battery Current Limiting support for A6xx

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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: Mohammed Mirza Mandayappurath Manzoor <mmandaya@codeaurora.org>
This commit is contained in:
Mohammed Mirza Mandayappurath Manzoor 2020-06-22 17:11:55 -07:00
commit b66758eeb9
4 changed files with 40 additions and 0 deletions
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4
drivers/gpu/msm/adreno.h
View file

@ -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;

3
drivers/gpu/msm/adreno_a6xx_gmu.c
View file

@ -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);

16
drivers/gpu/msm/adreno_a6xx_hfi.c
View file

@ -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;

17
drivers/gpu/msm/adreno_sysfs.c
View file

@ -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,
};