WSL2-Linux-Kernel/drivers/regulator/tps65218-regulator.c

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12 KiB
C
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/*
* tps65218-regulator.c
*
* Regulator driver for TPS65218 PMIC
*
* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com/
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether expressed or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License version 2 for more details.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/tps65218.h>
#define TPS65218_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
_em, _cr, _cm, _lr, _nlr, _delay, _fuv, _sr, _sm, \
_ct, _ncl) \
{ \
.name = _name, \
.of_match = _of, \
.id = _id, \
.ops = &_ops, \
.n_voltages = _n, \
.type = _type, \
.owner = THIS_MODULE, \
.vsel_reg = _vr, \
.vsel_mask = _vm, \
.csel_reg = _cr, \
.csel_mask = _cm, \
.curr_table = _ct, \
.n_current_limits = _ncl, \
.enable_reg = _er, \
.enable_mask = _em, \
.volt_table = NULL, \
.linear_ranges = _lr, \
.n_linear_ranges = _nlr, \
.ramp_delay = _delay, \
.fixed_uV = _fuv, \
.bypass_reg = _sr, \
.bypass_mask = _sm, \
} \
static const struct linear_range dcdc1_dcdc2_ranges[] = {
REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
};
static const struct linear_range ldo1_dcdc3_ranges[] = {
REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
};
static const struct linear_range dcdc4_ranges[] = {
REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
REGULATOR_LINEAR_RANGE(1600000, 0x10, 0x34, 50000),
};
static int tps65218_pmic_set_voltage_sel(struct regulator_dev *dev,
unsigned selector)
{
int ret;
struct tps65218 *tps = rdev_get_drvdata(dev);
unsigned int rid = rdev_get_id(dev);
/* Set the voltage based on vsel value and write protect level is 2 */
ret = tps65218_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,
selector, TPS65218_PROTECT_L1);
/* Set GO bit for DCDC1/2 to initiate voltage transistion */
switch (rid) {
case TPS65218_DCDC_1:
case TPS65218_DCDC_2:
ret = tps65218_set_bits(tps, TPS65218_REG_CONTRL_SLEW_RATE,
TPS65218_SLEW_RATE_GO,
TPS65218_SLEW_RATE_GO,
TPS65218_PROTECT_L1);
break;
}
return ret;
}
static int tps65218_pmic_enable(struct regulator_dev *dev)
{
struct tps65218 *tps = rdev_get_drvdata(dev);
int rid = rdev_get_id(dev);
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
return -EINVAL;
/* Enable the regulator and password protection is level 1 */
return tps65218_set_bits(tps, dev->desc->enable_reg,
dev->desc->enable_mask, dev->desc->enable_mask,
TPS65218_PROTECT_L1);
}
static int tps65218_pmic_disable(struct regulator_dev *dev)
{
struct tps65218 *tps = rdev_get_drvdata(dev);
int rid = rdev_get_id(dev);
if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1)
return -EINVAL;
/* Disable the regulator and password protection is level 1 */
return tps65218_clear_bits(tps, dev->desc->enable_reg,
dev->desc->enable_mask, TPS65218_PROTECT_L1);
}
static int tps65218_pmic_set_suspend_enable(struct regulator_dev *dev)
{
struct tps65218 *tps = rdev_get_drvdata(dev);
unsigned int rid = rdev_get_id(dev);
if (rid > TPS65218_LDO_1)
return -EINVAL;
return tps65218_clear_bits(tps, dev->desc->bypass_reg,
dev->desc->bypass_mask,
TPS65218_PROTECT_L1);
}
static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev)
{
struct tps65218 *tps = rdev_get_drvdata(dev);
unsigned int rid = rdev_get_id(dev);
if (rid > TPS65218_LDO_1)
return -EINVAL;
/*
* Certain revisions of TPS65218 will need to have DCDC3 regulator
* enabled always, otherwise an immediate system reboot will occur
* during poweroff.
*/
if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1)
return 0;
if (!tps->strobes[rid]) {
if (rid == TPS65218_DCDC_3)
tps->strobes[rid] = 3;
else
return -EINVAL;
}
return tps65218_set_bits(tps, dev->desc->bypass_reg,
dev->desc->bypass_mask,
tps->strobes[rid], TPS65218_PROTECT_L1);
}
/* Operations permitted on DCDC1, DCDC2 */
static const struct regulator_ops tps65218_dcdc12_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = tps65218_pmic_enable,
.disable = tps65218_pmic_disable,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = tps65218_pmic_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
};
/* Operations permitted on DCDC3, DCDC4 and LDO1 */
static const struct regulator_ops tps65218_ldo1_dcdc34_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = tps65218_pmic_enable,
.disable = tps65218_pmic_disable,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = tps65218_pmic_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
};
static const unsigned int ls3_currents[] = { 100000, 200000, 500000, 1000000 };
static int tps65218_pmic_set_input_current_lim(struct regulator_dev *dev,
int lim_uA)
{
unsigned int index = 0;
unsigned int num_currents = ARRAY_SIZE(ls3_currents);
struct tps65218 *tps = rdev_get_drvdata(dev);
while (index < num_currents && ls3_currents[index] != lim_uA)
index++;
if (index == num_currents)
return -EINVAL;
return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
index << __builtin_ctz(dev->desc->csel_mask),
TPS65218_PROTECT_L1);
}
static int tps65218_pmic_set_current_limit(struct regulator_dev *dev,
int min_uA, int max_uA)
{
int index = 0;
unsigned int num_currents = ARRAY_SIZE(ls3_currents);
struct tps65218 *tps = rdev_get_drvdata(dev);
while (index < num_currents && ls3_currents[index] <= max_uA)
index++;
index--;
if (index < 0 || ls3_currents[index] < min_uA)
return -EINVAL;
return tps65218_set_bits(tps, dev->desc->csel_reg, dev->desc->csel_mask,
index << __builtin_ctz(dev->desc->csel_mask),
TPS65218_PROTECT_L1);
}
static const struct regulator_ops tps65218_ls23_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = tps65218_pmic_enable,
.disable = tps65218_pmic_disable,
.set_input_current_limit = tps65218_pmic_set_input_current_lim,
.set_current_limit = tps65218_pmic_set_current_limit,
.get_current_limit = regulator_get_current_limit_regmap,
};
/* Operations permitted on DCDC5, DCDC6 */
static const struct regulator_ops tps65218_dcdc56_pmic_ops = {
.is_enabled = regulator_is_enabled_regmap,
.enable = tps65218_pmic_enable,
.disable = tps65218_pmic_disable,
.set_suspend_enable = tps65218_pmic_set_suspend_enable,
.set_suspend_disable = tps65218_pmic_set_suspend_disable,
};
static const struct regulator_desc regulators[] = {
TPS65218_REGULATOR("DCDC1", "regulator-dcdc1", TPS65218_DCDC_1,
REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
TPS65218_REG_CONTROL_DCDC1,
TPS65218_CONTROL_DCDC1_MASK, TPS65218_REG_ENABLE1,
TPS65218_ENABLE1_DC1_EN, 0, 0, dcdc1_dcdc2_ranges,
2, 4000, 0, TPS65218_REG_SEQ3,
TPS65218_SEQ3_DC1_SEQ_MASK, NULL, 0),
TPS65218_REGULATOR("DCDC2", "regulator-dcdc2", TPS65218_DCDC_2,
REGULATOR_VOLTAGE, tps65218_dcdc12_ops, 64,
TPS65218_REG_CONTROL_DCDC2,
TPS65218_CONTROL_DCDC2_MASK, TPS65218_REG_ENABLE1,
TPS65218_ENABLE1_DC2_EN, 0, 0, dcdc1_dcdc2_ranges,
2, 4000, 0, TPS65218_REG_SEQ3,
TPS65218_SEQ3_DC2_SEQ_MASK, NULL, 0),
TPS65218_REGULATOR("DCDC3", "regulator-dcdc3", TPS65218_DCDC_3,
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
TPS65218_REG_CONTROL_DCDC3,
TPS65218_CONTROL_DCDC3_MASK, TPS65218_REG_ENABLE1,
TPS65218_ENABLE1_DC3_EN, 0, 0, ldo1_dcdc3_ranges, 2,
0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC3_SEQ_MASK,
NULL, 0),
TPS65218_REGULATOR("DCDC4", "regulator-dcdc4", TPS65218_DCDC_4,
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 53,
TPS65218_REG_CONTROL_DCDC4,
TPS65218_CONTROL_DCDC4_MASK, TPS65218_REG_ENABLE1,
TPS65218_ENABLE1_DC4_EN, 0, 0, dcdc4_ranges, 2,
0, 0, TPS65218_REG_SEQ4, TPS65218_SEQ4_DC4_SEQ_MASK,
NULL, 0),
TPS65218_REGULATOR("DCDC5", "regulator-dcdc5", TPS65218_DCDC_5,
REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC5_EN, 0,
0, NULL, 0, 0, 1000000, TPS65218_REG_SEQ5,
TPS65218_SEQ5_DC5_SEQ_MASK, NULL, 0),
TPS65218_REGULATOR("DCDC6", "regulator-dcdc6", TPS65218_DCDC_6,
REGULATOR_VOLTAGE, tps65218_dcdc56_pmic_ops, 1, -1,
-1, TPS65218_REG_ENABLE1, TPS65218_ENABLE1_DC6_EN, 0,
0, NULL, 0, 0, 1800000, TPS65218_REG_SEQ5,
TPS65218_SEQ5_DC6_SEQ_MASK, NULL, 0),
TPS65218_REGULATOR("LDO1", "regulator-ldo1", TPS65218_LDO_1,
REGULATOR_VOLTAGE, tps65218_ldo1_dcdc34_ops, 64,
TPS65218_REG_CONTROL_LDO1,
TPS65218_CONTROL_LDO1_MASK, TPS65218_REG_ENABLE2,
TPS65218_ENABLE2_LDO1_EN, 0, 0, ldo1_dcdc3_ranges,
2, 0, 0, TPS65218_REG_SEQ6,
TPS65218_SEQ6_LDO1_SEQ_MASK, NULL, 0),
TPS65218_REGULATOR("LS2", "regulator-ls2", TPS65218_LS_2,
REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS2_EN,
TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS2ILIM_MASK,
NULL, 0, 0, 0, 0, 0, ls3_currents,
ARRAY_SIZE(ls3_currents)),
TPS65218_REGULATOR("LS3", "regulator-ls3", TPS65218_LS_3,
REGULATOR_CURRENT, tps65218_ls23_ops, 0, 0, 0,
TPS65218_REG_ENABLE2, TPS65218_ENABLE2_LS3_EN,
TPS65218_REG_CONFIG2, TPS65218_CONFIG2_LS3ILIM_MASK,
NULL, 0, 0, 0, 0, 0, ls3_currents,
ARRAY_SIZE(ls3_currents)),
};
static int tps65218_regulator_probe(struct platform_device *pdev)
{
struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent);
struct regulator_dev *rdev;
struct regulator_config config = { };
int i, ret;
unsigned int val;
config.dev = &pdev->dev;
config.dev->of_node = tps->dev->of_node;
config.driver_data = tps;
config.regmap = tps->regmap;
/* Allocate memory for strobes */
treewide: devm_kzalloc() -> devm_kcalloc() The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 00:07:58 +03:00
tps->strobes = devm_kcalloc(&pdev->dev,
TPS65218_NUM_REGULATOR, sizeof(u8),
GFP_KERNEL);
if (!tps->strobes)
return -ENOMEM;
for (i = 0; i < ARRAY_SIZE(regulators); i++) {
rdev = devm_regulator_register(&pdev->dev, &regulators[i],
&config);
if (IS_ERR(rdev)) {
dev_err(tps->dev, "failed to register %s regulator\n",
pdev->name);
return PTR_ERR(rdev);
}
ret = regmap_read(tps->regmap, regulators[i].bypass_reg, &val);
if (ret)
return ret;
tps->strobes[i] = val & regulators[i].bypass_mask;
}
return 0;
}
static const struct platform_device_id tps65218_regulator_id_table[] = {
{ "tps65218-regulator", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65218_regulator_id_table);
static struct platform_driver tps65218_regulator_driver = {
.driver = {
.name = "tps65218-pmic",
},
.probe = tps65218_regulator_probe,
.id_table = tps65218_regulator_id_table,
};
module_platform_driver(tps65218_regulator_driver);
MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
MODULE_ALIAS("platform:tps65218-pmic");
MODULE_LICENSE("GPL v2");