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Add sysctl for setting battery charging current.

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The charging current can be set using steps
from 0: 200mA to 13: 2800mA (200mA/step).
While there, fix battery charging current related
sensor descriptions.

Reviewed by:	manu
Differential Revision:	https://reviews.freebsd.org/D19212
This commit is contained in:
Ganbold Tsagaankhuu 2019-02-17 01:16:27 +00:00
parent c9b6ff9c98
commit e1d8f44fd4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=344219
1 changed files with 43 additions and 2 deletions
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45
sys/arm/allwinner/axp81x.c
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@ -120,6 +120,10 @@ MALLOC_DEFINE(M_AXP8XX_REG, "AXP8xx regulator", "AXP8xx power regulator");
#define AXP_VOLTCTL_MASK 0x7f
#define AXP_POWERBAT 0x32
#define AXP_POWERBAT_SHUTDOWN (1 << 7)
#define AXP_CHARGERCTL1 0x33
#define AXP_CHARGERCTL1_MIN 0
#define AXP_CHARGERCTL1_MAX 13
#define AXP_CHARGERCTL1_CMASK 0xf
#define AXP_IRQEN1 0x40
#define AXP_IRQEN1_ACIN_HI (1 << 6)
#define AXP_IRQEN1_ACIN_LO (1 << 5)
@ -614,13 +618,13 @@ static const struct axp8xx_sensors axp8xx_common_sensors[] = {
.id = AXP_SENSOR_BATT_CHARGE_CURRENT,
.name = "batchargecurrent",
.format = "I",
.desc = "Battery Charging Current",
.desc = "Average Battery Charging Current",
},
{
.id = AXP_SENSOR_BATT_DISCHARGE_CURRENT,
.name = "batdischargecurrent",
.format = "I",
.desc = "Battery Discharging Current",
.desc = "Average Battery Discharging Current",
},
{
.id = AXP_SENSOR_BATT_CAPACITY_PERCENT,
@ -889,6 +893,33 @@ axp8xx_shutdown(void *devp, int howto)
axp8xx_write(dev, AXP_POWERBAT, AXP_POWERBAT_SHUTDOWN);
}
static int
axp8xx_sysctl_chargecurrent(SYSCTL_HANDLER_ARGS)
{
device_t dev = arg1;
uint8_t data;
int val, error;
error = axp8xx_read(dev, AXP_CHARGERCTL1, &data, 1);
if (error != 0)
return (error);
if (bootverbose)
device_printf(dev, "Raw CHARGECTL1 val: 0x%0x\n", data);
val = (data & AXP_CHARGERCTL1_CMASK);
error = sysctl_handle_int(oidp, &val, 0, req);
if (error || !req->newptr) /* error || read request */
return (error);
if ((val < AXP_CHARGERCTL1_MIN) || (val > AXP_CHARGERCTL1_MAX))
return (EINVAL);
val |= (data & (AXP_CHARGERCTL1_CMASK << 4));
axp8xx_write(dev, AXP_CHARGERCTL1, val);
return (0);
}
static int
axp8xx_sysctl(SYSCTL_HANDLER_ARGS)
{
@ -1482,6 +1513,16 @@ axp8xx_attach(device_t dev)
sc->sensors[i].format,
sc->sensors[i].desc);
}
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
OID_AUTO, "batchargecurrentstep",
CTLTYPE_INT | CTLFLAG_RW,
dev, 0, axp8xx_sysctl_chargecurrent,
"I", "Battery Charging Current Step, "
"0: 200mA, 1: 400mA, 2: 600mA, 3: 800mA, "
"4: 1000mA, 5: 1200mA, 6: 1400mA, 7: 1600mA, "
"8: 1800mA, 9: 2000mA, 10: 2200mA, 11: 2400mA, "
"12: 2600mA, 13: 2800mA");
/* Get thresholds */
if (axp8xx_read(dev, AXP_BAT_CAP_WARN, &val, 1) == 0) {