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regulator: tps65910: Add backup battery regulator 

tps65910 has a backup battery charger with a configurable voltage. This
patch adds a regulator for the backup battery.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
hifive-unleashed-5.1
Markus Pargmann 2013-12-20 12:43:27 +01:00 committed by Mark Brown
parent 6ce4eac1f6
commit 03746dcbde
3 changed files with 59 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/devicetree/bindings/mfd/tps65910.txt
View File

@ -21,7 +21,7 @@ Required properties:
The valid regulator-compatible values are:
tps65910: vrtc, vio, vdd1, vdd2, vdd3, vdig1, vdig2, vpll, vdac, vaux1,
vaux2, vaux33, vmmc
vaux2, vaux33, vmmc, vbb
tps65911: vrtc, vio, vdd1, vdd3, vddctrl, ldo1, ldo2, ldo3, ldo4, ldo5,
ldo6, ldo7, ldo8
@ -38,7 +38,7 @@ Required properties:
vcc4-supply: VAUX1 and VAUX2 input.
vcc5-supply: VPLL and VDAC input.
vcc6-supply: VDIG1 and VDIG2 input.
vcc7-supply: VRTC input.
vcc7-supply: VRTC and VBB input.
vccio-supply: VIO input.
tps65911:
vcc1-supply: VDD1 input.

56
drivers/regulator/tps65910-regulator.c
View File

@ -88,6 +88,11 @@ static const unsigned int VMMC_VSEL_table[] = {
1800000, 2800000, 3000000, 3300000,
};
/* supported BBCH voltages in microvolts */
static const unsigned int VBB_VSEL_table[] = {
3000000, 2520000, 3150000, 5000000,
};
struct tps_info {
const char *name;
const char *vin_name;
@ -183,6 +188,12 @@ static struct tps_info tps65910_regs[] = {
.voltage_table = VMMC_VSEL_table,
.enable_time_us = 100,
},
{
.name = "vbb",
.vin_name = "vcc7",
.n_voltages = ARRAY_SIZE(VBB_VSEL_table),
.voltage_table = VBB_VSEL_table,
},
};
static struct tps_info tps65911_regs[] = {
@ -339,6 +350,8 @@ static int tps65910_get_ctrl_register(int id)
return TPS65910_VAUX33;
case TPS65910_REG_VMMC:
return TPS65910_VMMC;
case TPS65910_REG_VBB:
return TPS65910_BBCH;
default:
return -EINVAL;
}
@ -528,6 +541,10 @@ static int tps65910_get_voltage_sel(struct regulator_dev *dev)
value &= LDO_SEL_MASK;
value >>= LDO_SEL_SHIFT;
break;
case TPS65910_REG_VBB:
value &= BBCH_BBSEL_MASK;
value >>= BBCH_BBSEL_SHIFT;
break;
default:
return -EINVAL;
}
@ -638,6 +655,9 @@ static int tps65910_set_voltage_sel(struct regulator_dev *dev,
case TPS65910_REG_VMMC:
return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
selector << LDO_SEL_SHIFT);
case TPS65910_REG_VBB:
return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
selector << BBCH_BBSEL_SHIFT);
}
return -EINVAL;
@ -669,6 +689,9 @@ static int tps65911_set_voltage_sel(struct regulator_dev *dev,
case TPS65910_REG_VIO:
return tps65910_reg_update_bits(pmic->mfd, reg, LDO_SEL_MASK,
selector << LDO_SEL_SHIFT);
case TPS65910_REG_VBB:
return tps65910_reg_update_bits(pmic->mfd, reg, BBCH_BBSEL_MASK,
selector << BBCH_BBSEL_SHIFT);
}
return -EINVAL;
@ -762,6 +785,18 @@ static struct regulator_ops tps65910_ops_vdd3 = {
.map_voltage = regulator_map_voltage_ascend,
};
static struct regulator_ops tps65910_ops_vbb = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.set_mode = tps65910_set_mode,
.get_mode = tps65910_get_mode,
.get_voltage_sel = tps65910_get_voltage_sel,
.set_voltage_sel = tps65910_set_voltage_sel,
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_iterate,
};
static struct regulator_ops tps65910_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = regulator_enable_regmap,
@ -944,6 +979,7 @@ static struct of_regulator_match tps65910_matches[] = {
{ .name = "vaux2", .driver_data = (void *) &tps65910_regs[10] },
{ .name = "vaux33", .driver_data = (void *) &tps65910_regs[11] },
{ .name = "vmmc", .driver_data = (void *) &tps65910_regs[12] },
{ .name = "vbb", .driver_data = (void *) &tps65910_regs[13] },
};
static struct of_regulator_match tps65911_matches[] = {
@ -1145,6 +1181,10 @@ static int tps65910_probe(struct platform_device *pdev)
pmic->desc[i].ops = &tps65910_ops_dcdc;
pmic->desc[i].ramp_delay = 5000;
}
} else if (i == TPS65910_REG_VBB &&
tps65910_chip_id(tps65910) == TPS65910) {
pmic->desc[i].ops = &tps65910_ops_vbb;
pmic->desc[i].volt_table = info->voltage_table;
} else {
if (tps65910_chip_id(tps65910) == TPS65910) {
pmic->desc[i].ops = &tps65910_ops;
@ -1167,7 +1207,21 @@ static int tps65910_probe(struct platform_device *pdev)
pmic->desc[i].type = REGULATOR_VOLTAGE;
pmic->desc[i].owner = THIS_MODULE;
pmic->desc[i].enable_reg = pmic->get_ctrl_reg(i);
pmic->desc[i].enable_mask = TPS65910_SUPPLY_STATE_ENABLED;
switch (i) {
case TPS65910_REG_VBB:
if (tps65910_chip_id(tps65910) == TPS65910)
pmic->desc[i].enable_mask = BBCH_BBCHEN_MASK;
else
pmic->desc[i].enable_mask =
TPS65910_SUPPLY_STATE_ENABLED;
break;
default:
pmic->desc[i].enable_mask =
TPS65910_SUPPLY_STATE_ENABLED;
break;
}
config.dev = tps65910->dev;
config.init_data = reg_data;

3
include/linux/mfd/tps65910.h
View File

@ -833,6 +833,7 @@
#define TPS65910_REG_VAUX2 10
#define TPS65910_REG_VAUX33 11
#define TPS65910_REG_VMMC 12
#define TPS65910_REG_VBB 13
#define TPS65911_REG_VDDCTRL 4
#define TPS65911_REG_LDO1 5
@ -845,7 +846,7 @@
#define TPS65911_REG_LDO8 12
/* Max number of TPS65910/11 regulators */
#define TPS65910_NUM_REGS 13
#define TPS65910_NUM_REGS 14
/* External sleep controls through EN1/EN2/EN3/SLEEP inputs */
#define TPS65910_SLEEP_CONTROL_EXT_INPUT_EN1 0x1