OpenCloudOS-Kernel/drivers/regulator/da9121-regulator.c

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// SPDX-License-Identifier: GPL-2.0-only
//
// DA9121 Single-channel dual-phase 10A buck converter
//
// Copyright (C) 2020 Axis Communications AB
//
// DA9130 Single-channel dual-phase 10A buck converter (Automotive)
// DA9217 Single-channel dual-phase 6A buck converter
// DA9122 Dual-channel single-phase 5A buck converter
// DA9131 Dual-channel single-phase 5A buck converter (Automotive)
// DA9220 Dual-channel single-phase 3A buck converter
// DA9132 Dual-channel single-phase 3A buck converter (Automotive)
//
// Copyright (C) 2020 Dialog Semiconductor
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/regulator/da9121.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include "da9121-regulator.h"
/* Chip data */
struct da9121 {
struct device *dev;
struct delayed_work work;
struct da9121_pdata *pdata;
struct regmap *regmap;
struct regulator_dev *rdev[DA9121_IDX_MAX];
unsigned int persistent[2];
unsigned int passive_delay;
int chip_irq;
int variant_id;
int subvariant_id;
};
/* Define ranges for different variants, enabling translation to/from
* registers. Maximums give scope to allow for transients.
*/
struct da9121_range {
int val_min;
int val_max;
int val_stp;
int reg_min;
int reg_max;
};
static struct da9121_range da9121_10A_2phase_current = {
.val_min = 7000000,
.val_max = 20000000,
.val_stp = 1000000,
.reg_min = 1,
.reg_max = 14,
};
static struct da9121_range da9121_6A_2phase_current = {
.val_min = 7000000,
.val_max = 12000000,
.val_stp = 1000000,
.reg_min = 1,
.reg_max = 6,
};
static struct da9121_range da9121_5A_1phase_current = {
.val_min = 3500000,
.val_max = 10000000,
.val_stp = 500000,
.reg_min = 1,
.reg_max = 14,
};
static struct da9121_range da9121_3A_1phase_current = {
.val_min = 3500000,
.val_max = 6000000,
.val_stp = 500000,
.reg_min = 1,
.reg_max = 6,
};
static struct da9121_range da914x_40A_4phase_current = {
.val_min = 26000000,
.val_max = 78000000,
.val_stp = 4000000,
.reg_min = 1,
.reg_max = 14,
};
static struct da9121_range da914x_20A_2phase_current = {
.val_min = 13000000,
.val_max = 39000000,
.val_stp = 2000000,
.reg_min = 1,
.reg_max = 14,
};
struct da9121_variant_info {
int num_bucks;
int num_phases;
struct da9121_range *current_range;
};
static const struct da9121_variant_info variant_parameters[] = {
{ 1, 2, &da9121_10A_2phase_current }, //DA9121_TYPE_DA9121_DA9130
{ 2, 1, &da9121_3A_1phase_current }, //DA9121_TYPE_DA9220_DA9132
{ 2, 1, &da9121_5A_1phase_current }, //DA9121_TYPE_DA9122_DA9131
{ 1, 2, &da9121_6A_2phase_current }, //DA9121_TYPE_DA9217
{ 1, 4, &da914x_40A_4phase_current }, //DA9121_TYPE_DA9141
{ 1, 2, &da914x_20A_2phase_current }, //DA9121_TYPE_DA9142
};
struct da9121_field {
unsigned int reg;
unsigned int msk;
};
static const struct da9121_field da9121_current_field[2] = {
{ DA9121_REG_BUCK_BUCK1_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
{ DA9xxx_REG_BUCK_BUCK2_2, DA9121_MASK_BUCK_BUCKx_2_CHx_ILIM },
};
static const struct da9121_field da9121_mode_field[2] = {
{ DA9121_REG_BUCK_BUCK1_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
{ DA9xxx_REG_BUCK_BUCK2_4, DA9121_MASK_BUCK_BUCKx_4_CHx_A_MODE },
};
struct status_event_data {
int buck_id; /* 0=core, 1/2-buck */
int reg_index; /* index for status/event/mask register selection */
int status_bit; /* bit masks... */
int event_bit;
int mask_bit;
unsigned long notification; /* Notification for status inception */
char *warn; /* if NULL, notify - otherwise dev_warn this string */
};
#define DA9121_STATUS(id, bank, name, notification, warning) \
{ id, bank, \
DA9121_MASK_SYS_STATUS_##bank##_##name, \
DA9121_MASK_SYS_EVENT_##bank##_E_##name, \
DA9121_MASK_SYS_MASK_##bank##_M_##name, \
notification, warning }
/* For second buck related event bits that are specific to DA9122, DA9220 variants */
#define DA9xxx_STATUS(id, bank, name, notification, warning) \
{ id, bank, \
DA9xxx_MASK_SYS_STATUS_##bank##_##name, \
DA9xxx_MASK_SYS_EVENT_##bank##_E_##name, \
DA9xxx_MASK_SYS_MASK_##bank##_M_##name, \
notification, warning }
/* The status signals that may need servicing, depending on device variant.
* After assertion, they persist; so event is notified, the IRQ disabled,
* and status polled until clear again and IRQ is reenabled.
*
* SG/PG1/PG2 should be set when device first powers up and should never
* re-occur. When this driver starts, it is expected that these will have
* self-cleared for when the IRQs are enabled, so these should never be seen.
* If seen, the implication is that the device has reset.
*
* GPIO0/1/2 are not configured for use by default, so should not be seen.
*/
static const struct status_event_data status_event_handling[] = {
DA9xxx_STATUS(0, 0, SG, 0, "Handled E_SG\n"),
DA9121_STATUS(0, 0, TEMP_CRIT, (REGULATOR_EVENT_OVER_TEMP|REGULATOR_EVENT_DISABLE), NULL),
DA9121_STATUS(0, 0, TEMP_WARN, REGULATOR_EVENT_OVER_TEMP, NULL),
DA9121_STATUS(1, 1, PG1, 0, "Handled E_PG1\n"),
DA9121_STATUS(1, 1, OV1, REGULATOR_EVENT_REGULATION_OUT, NULL),
DA9121_STATUS(1, 1, UV1, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
DA9121_STATUS(1, 1, OC1, REGULATOR_EVENT_OVER_CURRENT, NULL),
DA9xxx_STATUS(2, 1, PG2, 0, "Handled E_PG2\n"),
DA9xxx_STATUS(2, 1, OV2, REGULATOR_EVENT_REGULATION_OUT, NULL),
DA9xxx_STATUS(2, 1, UV2, REGULATOR_EVENT_UNDER_VOLTAGE, NULL),
DA9xxx_STATUS(2, 1, OC2, REGULATOR_EVENT_OVER_CURRENT, NULL),
DA9121_STATUS(0, 2, GPIO0, 0, "Handled E_GPIO0\n"),
DA9121_STATUS(0, 2, GPIO1, 0, "Handled E_GPIO1\n"),
DA9121_STATUS(0, 2, GPIO2, 0, "Handled E_GPIO2\n"),
};
static int da9121_get_current_limit(struct regulator_dev *rdev)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
struct da9121_range *range =
variant_parameters[chip->variant_id].current_range;
unsigned int val = 0;
int ret = 0;
ret = regmap_read(chip->regmap, da9121_current_field[id].reg, &val);
if (ret < 0) {
dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
goto error;
}
if (val < range->reg_min) {
ret = -EACCES;
goto error;
}
if (val > range->reg_max) {
ret = -EINVAL;
goto error;
}
return range->val_min + (range->val_stp * (val - range->reg_min));
error:
return ret;
}
static int da9121_ceiling_selector(struct regulator_dev *rdev,
int min, int max,
unsigned int *selector)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
struct da9121_range *range =
variant_parameters[chip->variant_id].current_range;
unsigned int level;
unsigned int i = 0;
unsigned int sel = 0;
int ret = 0;
if (range->val_min > max || range->val_max < min) {
dev_err(chip->dev,
"Requested current out of regulator capability\n");
ret = -EINVAL;
goto error;
}
level = range->val_max;
for (i = range->reg_max; i >= range->reg_min; i--) {
if (level <= max) {
sel = i;
break;
}
level -= range->val_stp;
}
if (level < min) {
dev_err(chip->dev,
"Best match falls below minimum requested current\n");
ret = -EINVAL;
goto error;
}
*selector = sel;
error:
return ret;
}
static int da9121_set_current_limit(struct regulator_dev *rdev,
int min_ua, int max_ua)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
struct da9121_range *range =
variant_parameters[chip->variant_id].current_range;
unsigned int sel = 0;
int ret = 0;
if (min_ua < range->val_min ||
max_ua > range->val_max) {
ret = -EINVAL;
goto error;
}
if (rdev->desc->ops->is_enabled(rdev)) {
ret = -EBUSY;
goto error;
}
ret = da9121_ceiling_selector(rdev, min_ua, max_ua, &sel);
if (ret < 0)
goto error;
ret = regmap_update_bits(chip->regmap,
da9121_current_field[id].reg,
da9121_current_field[id].msk,
(unsigned int)sel);
if (ret < 0)
dev_err(chip->dev, "Cannot update BUCK current limit, err: %d\n", ret);
error:
return ret;
}
static unsigned int da9121_map_mode(unsigned int mode)
{
switch (mode) {
case DA9121_BUCK_MODE_FORCE_PWM:
return REGULATOR_MODE_FAST;
case DA9121_BUCK_MODE_FORCE_PWM_SHEDDING:
return REGULATOR_MODE_NORMAL;
case DA9121_BUCK_MODE_AUTO:
return REGULATOR_MODE_IDLE;
case DA9121_BUCK_MODE_FORCE_PFM:
return REGULATOR_MODE_STANDBY;
default:
return REGULATOR_MODE_INVALID;
}
}
static int da9121_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
unsigned int val;
switch (mode) {
case REGULATOR_MODE_FAST:
val = DA9121_BUCK_MODE_FORCE_PWM;
break;
case REGULATOR_MODE_NORMAL:
val = DA9121_BUCK_MODE_FORCE_PWM_SHEDDING;
break;
case REGULATOR_MODE_IDLE:
val = DA9121_BUCK_MODE_AUTO;
break;
case REGULATOR_MODE_STANDBY:
val = DA9121_BUCK_MODE_FORCE_PFM;
break;
default:
return -EINVAL;
}
return regmap_update_bits(chip->regmap,
da9121_mode_field[id].reg,
da9121_mode_field[id].msk,
val);
}
static unsigned int da9121_buck_get_mode(struct regulator_dev *rdev)
{
struct da9121 *chip = rdev_get_drvdata(rdev);
int id = rdev_get_id(rdev);
unsigned int val, mode;
int ret = 0;
ret = regmap_read(chip->regmap, da9121_mode_field[id].reg, &val);
if (ret < 0) {
dev_err(chip->dev, "Cannot read BUCK register: %d\n", ret);
return -EINVAL;
}
mode = da9121_map_mode(val & da9121_mode_field[id].msk);
if (mode == REGULATOR_MODE_INVALID)
return -EINVAL;
return mode;
}
static const struct regulator_ops da9121_buck_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.list_voltage = regulator_list_voltage_linear,
.get_current_limit = da9121_get_current_limit,
.set_current_limit = da9121_set_current_limit,
.set_mode = da9121_buck_set_mode,
.get_mode = da9121_buck_get_mode,
};
static struct of_regulator_match da9121_matches[] = {
[DA9121_IDX_BUCK1] = { .name = "buck1" },
[DA9121_IDX_BUCK2] = { .name = "buck2" },
};
static int da9121_of_parse_cb(struct device_node *np,
const struct regulator_desc *desc,
struct regulator_config *config)
{
struct da9121 *chip = config->driver_data;
struct da9121_pdata *pdata;
struct gpio_desc *ena_gpiod;
if (chip->pdata == NULL) {
pdata = devm_kzalloc(chip->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
} else {
pdata = chip->pdata;
}
pdata->num_buck++;
if (pdata->num_buck > variant_parameters[chip->variant_id].num_bucks) {
dev_err(chip->dev, "Error: excessive regulators for device\n");
return -ENODEV;
}
ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0,
GPIOD_OUT_HIGH |
GPIOD_FLAGS_BIT_NONEXCLUSIVE,
"da9121-enable");
if (!IS_ERR(ena_gpiod))
config->ena_gpiod = ena_gpiod;
if (variant_parameters[chip->variant_id].num_bucks == 2) {
uint32_t ripple_cancel;
uint32_t ripple_reg;
int ret;
if (of_property_read_u32(da9121_matches[pdata->num_buck-1].of_node,
"dlg,ripple-cancel", &ripple_cancel)) {
if (pdata->num_buck > 1)
ripple_reg = DA9xxx_REG_BUCK_BUCK2_7;
else
ripple_reg = DA9121_REG_BUCK_BUCK1_7;
ret = regmap_update_bits(chip->regmap, ripple_reg,
DA9xxx_MASK_BUCK_BUCKx_7_CHx_RIPPLE_CANCEL,
ripple_cancel);
if (ret < 0)
dev_err(chip->dev, "Cannot set ripple mode, err: %d\n", ret);
}
}
return 0;
}
#define DA9121_MIN_MV 300
#define DA9121_MAX_MV 1900
#define DA9121_STEP_MV 10
#define DA9121_MIN_SEL (DA9121_MIN_MV / DA9121_STEP_MV)
#define DA9121_N_VOLTAGES (((DA9121_MAX_MV - DA9121_MIN_MV) / DA9121_STEP_MV) \
+ 1 + DA9121_MIN_SEL)
static const struct regulator_desc da9121_reg = {
.id = DA9121_IDX_BUCK1,
.name = "da9121",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
/* Default value of BUCK_BUCK1_0.CH1_SRC_DVC_UP */
.ramp_delay = 20000,
/* tBUCK_EN */
.enable_time = 20,
};
static const struct regulator_desc da9220_reg[2] = {
{
.id = DA9121_IDX_BUCK1,
.name = "DA9220/DA9132 BUCK1",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
},
{
.id = DA9121_IDX_BUCK2,
.name = "DA9220/DA9132 BUCK2",
.of_match = "buck2",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
}
};
static const struct regulator_desc da9122_reg[2] = {
{
.id = DA9121_IDX_BUCK1,
.name = "DA9122/DA9131 BUCK1",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
},
{
.id = DA9121_IDX_BUCK2,
.name = "DA9122/DA9131 BUCK2",
.of_match = "buck2",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.enable_reg = DA9xxx_REG_BUCK_BUCK2_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9xxx_REG_BUCK_BUCK2_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
}
};
static const struct regulator_desc da9217_reg = {
.id = DA9121_IDX_BUCK1,
.name = "DA9217 BUCK1",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA9121_N_VOLTAGES,
.min_uV = DA9121_MIN_MV * 1000,
.uV_step = DA9121_STEP_MV * 1000,
.linear_min_sel = DA9121_MIN_SEL,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
};
#define DA914X_MIN_MV 500
#define DA914X_MAX_MV 1300
#define DA914X_STEP_MV 10
#define DA914X_MIN_SEL (DA914X_MIN_MV / DA914X_STEP_MV)
#define DA914X_N_VOLTAGES (((DA914X_MAX_MV - DA914X_MIN_MV) / DA914X_STEP_MV) \
+ 1 + DA914X_MIN_SEL)
static const struct regulator_desc da9141_reg = {
.id = DA9121_IDX_BUCK1,
.name = "DA9141",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA914X_N_VOLTAGES,
.min_uV = DA914X_MIN_MV * 1000,
.uV_step = DA914X_STEP_MV * 1000,
.linear_min_sel = DA914X_MIN_SEL,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
};
static const struct regulator_desc da9142_reg = {
.id = DA9121_IDX_BUCK1,
.name = "DA9142 BUCK1",
.of_match = "buck1",
.of_parse_cb = da9121_of_parse_cb,
.owner = THIS_MODULE,
.regulators_node = of_match_ptr("regulators"),
.of_map_mode = da9121_map_mode,
.ops = &da9121_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = DA914X_N_VOLTAGES,
.min_uV = DA914X_MIN_MV * 1000,
.uV_step = DA914X_STEP_MV * 1000,
.linear_min_sel = DA914X_MIN_SEL,
.enable_reg = DA9121_REG_BUCK_BUCK1_0,
.enable_mask = DA9121_MASK_BUCK_BUCKx_0_CHx_EN,
.vsel_reg = DA9121_REG_BUCK_BUCK1_5,
.vsel_mask = DA9121_MASK_BUCK_BUCKx_5_CHx_A_VOUT,
};
static const struct regulator_desc *local_da9121_regulators[][DA9121_IDX_MAX] = {
[DA9121_TYPE_DA9121_DA9130] = { &da9121_reg, NULL },
[DA9121_TYPE_DA9220_DA9132] = { &da9220_reg[0], &da9220_reg[1] },
[DA9121_TYPE_DA9122_DA9131] = { &da9122_reg[0], &da9122_reg[1] },
[DA9121_TYPE_DA9217] = { &da9217_reg, NULL },
[DA9121_TYPE_DA9141] = { &da9141_reg, NULL },
[DA9121_TYPE_DA9142] = { &da9142_reg, NULL },
};
static void da9121_status_poll_on(struct work_struct *work)
{
struct da9121 *chip = container_of(work, struct da9121, work.work);
int status[3] = {0};
int clear[3] = {0};
unsigned long delay;
int i;
int ret;
ret = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_STATUS_0, status, 2);
if (ret < 0) {
dev_err(chip->dev,
"Failed to read STATUS registers: %d\n", ret);
goto error;
}
/* Possible events are tested to be within range for the variant, potentially
* masked by the IRQ handler (not just warned about), as having been masked,
* and the respective state cleared - then flagged to unmask for next IRQ.
*/
for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
const struct status_event_data *item = &status_event_handling[i];
int reg_idx = item->reg_index;
bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
bool supported = (item->warn == NULL);
bool persisting = (chip->persistent[reg_idx] & item->event_bit);
bool now_cleared = !(status[reg_idx] & item->status_bit);
if (relevant && supported && persisting && now_cleared) {
clear[reg_idx] |= item->mask_bit;
chip->persistent[reg_idx] &= ~item->event_bit;
}
}
for (i = 0; i < 2; i++) {
if (clear[i]) {
unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
unsigned int mbit = clear[i];
ret = regmap_update_bits(chip->regmap, reg, mbit, 0);
if (ret < 0) {
dev_err(chip->dev,
"Failed to unmask 0x%02x %d\n",
reg, ret);
goto error;
}
}
}
if (chip->persistent[0] | chip->persistent[1]) {
delay = msecs_to_jiffies(chip->passive_delay);
queue_delayed_work(system_freezable_wq, &chip->work, delay);
}
error:
return;
}
static irqreturn_t da9121_irq_handler(int irq, void *data)
{
struct da9121 *chip = data;
struct regulator_dev *rdev;
int event[3] = {0};
int handled[3] = {0};
int mask[3] = {0};
int ret = IRQ_NONE;
int i;
int err;
err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_EVENT_0, event, 3);
if (err < 0) {
dev_err(chip->dev, "Failed to read EVENT registers %d\n", err);
ret = IRQ_NONE;
goto error;
}
err = regmap_bulk_read(chip->regmap, DA9121_REG_SYS_MASK_0, mask, 3);
if (err < 0) {
dev_err(chip->dev,
"Failed to read MASK registers: %d\n", ret);
ret = IRQ_NONE;
goto error;
}
rdev = chip->rdev[DA9121_IDX_BUCK1];
/* Possible events are tested to be within range for the variant, currently
* enabled, and having triggered this IRQ. The event may then be notified,
* or a warning given for unexpected events - those from device POR, and
* currently unsupported GPIO configurations.
*/
for (i = 0; i < ARRAY_SIZE(status_event_handling); i++) {
const struct status_event_data *item = &status_event_handling[i];
int reg_idx = item->reg_index;
bool relevant = (item->buck_id <= variant_parameters[chip->variant_id].num_bucks);
bool enabled = !(mask[reg_idx] & item->mask_bit);
bool active = (event[reg_idx] & item->event_bit);
bool notify = (item->warn == NULL);
if (relevant && enabled && active) {
if (notify) {
chip->persistent[reg_idx] |= item->event_bit;
regulator_notifier_call_chain(rdev, item->notification, NULL);
} else {
dev_warn(chip->dev, item->warn);
handled[reg_idx] |= item->event_bit;
ret = IRQ_HANDLED;
}
}
}
for (i = 0; i < 3; i++) {
if (event[i] != handled[i]) {
dev_warn(chip->dev,
"Unhandled event(s) in bank%d 0x%02x\n", i,
event[i] ^ handled[i]);
}
}
/* Mask the interrupts for persistent events OV, OC, UV, WARN, CRIT */
for (i = 0; i < 2; i++) {
if (handled[i]) {
unsigned int reg = DA9121_REG_SYS_MASK_0 + i;
unsigned int mbit = handled[i];
err = regmap_update_bits(chip->regmap, reg, mbit, mbit);
if (err < 0) {
dev_err(chip->dev,
"Failed to mask 0x%02x interrupt %d\n",
reg, err);
ret = IRQ_NONE;
goto error;
}
}
}
/* clear the events */
if (handled[0] | handled[1] | handled[2]) {
err = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_EVENT_0, handled, 3);
if (err < 0) {
dev_err(chip->dev, "Fail to write EVENTs %d\n", err);
ret = IRQ_NONE;
goto error;
}
}
queue_delayed_work(system_freezable_wq, &chip->work, 0);
error:
return ret;
}
static int da9121_set_regulator_config(struct da9121 *chip)
{
struct regulator_config config = { };
unsigned int max_matches = variant_parameters[chip->variant_id].num_bucks;
int ret = 0;
int i;
for (i = 0; i < max_matches; i++) {
const struct regulator_desc *regl_desc =
local_da9121_regulators[chip->variant_id][i];
config.dev = chip->dev;
config.driver_data = chip;
config.regmap = chip->regmap;
chip->rdev[i] = devm_regulator_register(chip->dev,
regl_desc, &config);
if (IS_ERR(chip->rdev[i])) {
dev_err(chip->dev, "Failed to register regulator %s, %d/%d\n",
regl_desc->name, (i+1), max_matches);
ret = PTR_ERR(chip->rdev[i]);
goto error;
}
}
error:
return ret;
}
/* DA9121 chip register model */
static const struct regmap_range da9121_1ch_readable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
};
static const struct regmap_access_table da9121_1ch_readable_table = {
.yes_ranges = da9121_1ch_readable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9121_1ch_readable_ranges),
};
static const struct regmap_range da9121_2ch_readable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_MASK_3),
regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_7),
regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_7),
regmap_reg_range(DA9121_REG_OTP_DEVICE_ID, DA9121_REG_OTP_CONFIG_ID),
};
static const struct regmap_access_table da9121_2ch_readable_table = {
.yes_ranges = da9121_2ch_readable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9121_2ch_readable_ranges),
};
static const struct regmap_range da9121_1ch_writeable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_6),
};
static const struct regmap_access_table da9121_1ch_writeable_table = {
.yes_ranges = da9121_1ch_writeable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9121_1ch_writeable_ranges),
};
static const struct regmap_range da9121_2ch_writeable_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_EVENT_0, DA9121_REG_SYS_MASK_3),
regmap_reg_range(DA9121_REG_SYS_CONFIG_2, DA9121_REG_SYS_CONFIG_3),
regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_2),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_4, DA9121_REG_BUCK_BUCK1_7),
regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_0, DA9xxx_REG_BUCK_BUCK2_2),
regmap_reg_range(DA9xxx_REG_BUCK_BUCK2_4, DA9xxx_REG_BUCK_BUCK2_7),
};
static const struct regmap_access_table da9121_2ch_writeable_table = {
.yes_ranges = da9121_2ch_writeable_ranges,
.n_yes_ranges = ARRAY_SIZE(da9121_2ch_writeable_ranges),
};
static const struct regmap_range da9121_volatile_ranges[] = {
regmap_reg_range(DA9121_REG_SYS_STATUS_0, DA9121_REG_SYS_EVENT_2),
regmap_reg_range(DA9121_REG_SYS_GPIO0_0, DA9121_REG_SYS_GPIO2_1),
regmap_reg_range(DA9121_REG_BUCK_BUCK1_0, DA9121_REG_BUCK_BUCK1_6),
};
static const struct regmap_access_table da9121_volatile_table = {
.yes_ranges = da9121_volatile_ranges,
.n_yes_ranges = ARRAY_SIZE(da9121_volatile_ranges),
};
/* DA9121 regmap config for 1 channel variants */
static struct regmap_config da9121_1ch_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = DA9121_REG_OTP_CONFIG_ID,
.rd_table = &da9121_1ch_readable_table,
.wr_table = &da9121_1ch_writeable_table,
.volatile_table = &da9121_volatile_table,
.cache_type = REGCACHE_RBTREE,
};
/* DA9121 regmap config for 2 channel variants */
static struct regmap_config da9121_2ch_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = DA9121_REG_OTP_CONFIG_ID,
.rd_table = &da9121_2ch_readable_table,
.wr_table = &da9121_2ch_writeable_table,
.volatile_table = &da9121_volatile_table,
.cache_type = REGCACHE_RBTREE,
};
static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
{
u32 device_id;
u32 variant_id;
u8 variant_mrc, variant_vrc;
char *type;
bool config_match = false;
int ret = 0;
ret = regmap_read(chip->regmap, DA9121_REG_OTP_DEVICE_ID, &device_id);
if (ret < 0) {
dev_err(chip->dev, "Cannot read device ID: %d\n", ret);
goto error;
}
ret = regmap_read(chip->regmap, DA9121_REG_OTP_VARIANT_ID, &variant_id);
if (ret < 0) {
dev_err(chip->dev, "Cannot read variant ID: %d\n", ret);
goto error;
}
if ((device_id != DA9121_DEVICE_ID) && (device_id != DA914x_DEVICE_ID)) {
dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id);
ret = -ENODEV;
goto error;
}
variant_vrc = variant_id & DA9121_MASK_OTP_VARIANT_ID_VRC;
switch (chip->subvariant_id) {
case DA9121_SUBTYPE_DA9121:
type = "DA9121";
config_match = (variant_vrc == DA9121_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9130:
type = "DA9130";
config_match = (variant_vrc == DA9130_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9220:
type = "DA9220";
config_match = (variant_vrc == DA9220_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9132:
type = "DA9132";
config_match = (variant_vrc == DA9132_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9122:
type = "DA9122";
config_match = (variant_vrc == DA9122_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9131:
type = "DA9131";
config_match = (variant_vrc == DA9131_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9217:
type = "DA9217";
config_match = (variant_vrc == DA9217_VARIANT_VRC);
break;
default:
type = "Unknown";
break;
}
if (device_id == DA914x_DEVICE_ID) {
switch (chip->subvariant_id) {
case DA9121_SUBTYPE_DA9141:
type = "DA9141";
config_match = (variant_vrc == DA9141_VARIANT_VRC);
break;
case DA9121_SUBTYPE_DA9142:
type = "DA9142";
config_match = (variant_vrc == DA9142_VARIANT_VRC);
break;
default:
type = "Unknown";
break;
}
}
dev_info(chip->dev,
"Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n",
device_id, variant_id, type);
if (!config_match) {
dev_err(chip->dev, "Device tree configuration does not match detected device.\n");
ret = -EINVAL;
goto error;
}
variant_mrc = (variant_id & DA9121_MASK_OTP_VARIANT_ID_MRC)
>> DA9121_SHIFT_OTP_VARIANT_ID_MRC;
if (((device_id == DA9121_DEVICE_ID) &&
(variant_mrc < DA9121_VARIANT_MRC_BASE)) ||
((device_id == DA914x_DEVICE_ID) &&
(variant_mrc != DA914x_VARIANT_MRC_BASE))) {
dev_err(chip->dev,
"Cannot support variant MRC: 0x%02X\n", variant_mrc);
ret = -EINVAL;
}
error:
return ret;
}
static int da9121_assign_chip_model(struct i2c_client *i2c,
struct da9121 *chip)
{
struct regmap_config *regmap;
int ret = 0;
chip->dev = &i2c->dev;
/* Use configured subtype to select the regulator descriptor index and
* register map, common to both consumer and automotive grade variants
*/
switch (chip->subvariant_id) {
case DA9121_SUBTYPE_DA9121:
case DA9121_SUBTYPE_DA9130:
chip->variant_id = DA9121_TYPE_DA9121_DA9130;
regmap = &da9121_1ch_regmap_config;
break;
case DA9121_SUBTYPE_DA9217:
chip->variant_id = DA9121_TYPE_DA9217;
regmap = &da9121_1ch_regmap_config;
break;
case DA9121_SUBTYPE_DA9122:
case DA9121_SUBTYPE_DA9131:
chip->variant_id = DA9121_TYPE_DA9122_DA9131;
regmap = &da9121_2ch_regmap_config;
break;
case DA9121_SUBTYPE_DA9220:
case DA9121_SUBTYPE_DA9132:
chip->variant_id = DA9121_TYPE_DA9220_DA9132;
regmap = &da9121_2ch_regmap_config;
break;
case DA9121_SUBTYPE_DA9141:
chip->variant_id = DA9121_TYPE_DA9141;
regmap = &da9121_1ch_regmap_config;
break;
case DA9121_SUBTYPE_DA9142:
chip->variant_id = DA9121_TYPE_DA9142;
regmap = &da9121_2ch_regmap_config;
break;
regulator: da9121: Fix uninit-value in da9121_assign_chip_model() KASAN report slab-out-of-bounds in __regmap_init as follows: BUG: KASAN: slab-out-of-bounds in __regmap_init drivers/base/regmap/regmap.c:841 Read of size 1 at addr ffff88803678cdf1 by task xrun/9137 CPU: 0 PID: 9137 Comm: xrun Tainted: G W 5.18.0-rc2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xe8/0x15a lib/dump_stack.c:88 print_report.cold+0xcd/0x69b mm/kasan/report.c:313 kasan_report+0x8e/0xc0 mm/kasan/report.c:491 __regmap_init+0x4540/0x4ba0 drivers/base/regmap/regmap.c:841 __devm_regmap_init+0x7a/0x100 drivers/base/regmap/regmap.c:1266 __devm_regmap_init_i2c+0x65/0x80 drivers/base/regmap/regmap-i2c.c:394 da9121_i2c_probe+0x386/0x6d1 drivers/regulator/da9121-regulator.c:1039 i2c_device_probe+0x959/0xac0 drivers/i2c/i2c-core-base.c:563 This happend when da9121 device is probe by da9121_i2c_id, but with invalid dts. Thus, chip->subvariant_id is set to -EINVAL, and later da9121_assign_chip_model() will access 'regmap' without init it. Fix it by return -EINVAL from da9121_assign_chip_model() if 'chip->subvariant_id' is invalid. Fixes: f3fbd5566f6a ("regulator: da9121: Add device variants") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Adam Ward <Adam.Ward.Opensource@diasemi.com> Link: https://lore.kernel.org/r/20220421090335.1876149-1-weiyongjun1@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-21 17:03:35 +08:00
default:
return -EINVAL;
}
/* Set these up for of_regulator_match call which may want .of_map_modes */
da9121_matches[0].desc = local_da9121_regulators[chip->variant_id][0];
da9121_matches[1].desc = local_da9121_regulators[chip->variant_id][1];
chip->regmap = devm_regmap_init_i2c(i2c, regmap);
if (IS_ERR(chip->regmap)) {
ret = PTR_ERR(chip->regmap);
dev_err(chip->dev, "Failed to configure a register map: %d\n",
ret);
return ret;
}
ret = da9121_check_device_type(i2c, chip);
return ret;
}
static int da9121_config_irq(struct i2c_client *i2c,
struct da9121 *chip)
{
unsigned int p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
const int mask_all[4] = { 0, 0, 0xFF, 0xFF };
int ret = 0;
chip->chip_irq = i2c->irq;
if (chip->chip_irq != 0) {
if (!of_property_read_u32(chip->dev->of_node,
"dlg,irq-polling-delay-passive-ms",
&p_delay)) {
if (p_delay < DA9121_MIN_POLLING_PERIOD_MS ||
p_delay > DA9121_MAX_POLLING_PERIOD_MS) {
dev_warn(chip->dev,
"Out-of-range polling period %d ms\n",
p_delay);
p_delay = DA9121_DEFAULT_POLLING_PERIOD_MS;
}
}
chip->passive_delay = p_delay;
ret = request_threaded_irq(chip->chip_irq, NULL,
da9121_irq_handler,
IRQF_TRIGGER_LOW|IRQF_ONESHOT,
"da9121", chip);
if (ret != 0) {
dev_err(chip->dev, "Failed IRQ request: %d\n",
chip->chip_irq);
goto error;
}
ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
if (ret != 0) {
dev_err(chip->dev, "Failed to set IRQ masks: %d\n",
ret);
goto regmap_error;
}
INIT_DELAYED_WORK(&chip->work, da9121_status_poll_on);
dev_info(chip->dev, "Interrupt polling period set at %d ms\n",
chip->passive_delay);
}
error:
return ret;
regmap_error:
free_irq(chip->chip_irq, chip);
return ret;
}
static const struct of_device_id da9121_dt_ids[] = {
{ .compatible = "dlg,da9121", .data = (void *) DA9121_SUBTYPE_DA9121 },
{ .compatible = "dlg,da9130", .data = (void *) DA9121_SUBTYPE_DA9130 },
{ .compatible = "dlg,da9217", .data = (void *) DA9121_SUBTYPE_DA9217 },
{ .compatible = "dlg,da9122", .data = (void *) DA9121_SUBTYPE_DA9122 },
{ .compatible = "dlg,da9131", .data = (void *) DA9121_SUBTYPE_DA9131 },
{ .compatible = "dlg,da9220", .data = (void *) DA9121_SUBTYPE_DA9220 },
{ .compatible = "dlg,da9132", .data = (void *) DA9121_SUBTYPE_DA9132 },
{ .compatible = "dlg,da9141", .data = (void *) DA9121_SUBTYPE_DA9141 },
{ .compatible = "dlg,da9142", .data = (void *) DA9121_SUBTYPE_DA9142 },
{ }
};
MODULE_DEVICE_TABLE(of, da9121_dt_ids);
static inline int da9121_of_get_id(struct device *dev)
{
const struct of_device_id *id = of_match_device(da9121_dt_ids, dev);
if (!id) {
dev_err(dev, "%s: Failed\n", __func__);
return -EINVAL;
}
return (uintptr_t)id->data;
}
static int da9121_i2c_probe(struct i2c_client *i2c)
{
struct da9121 *chip;
const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
int ret = 0;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9121), GFP_KERNEL);
if (!chip) {
ret = -ENOMEM;
goto error;
}
chip->pdata = i2c->dev.platform_data;
chip->subvariant_id = da9121_of_get_id(&i2c->dev);
ret = da9121_assign_chip_model(i2c, chip);
if (ret < 0)
goto error;
ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
if (ret != 0) {
dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
goto error;
}
ret = da9121_set_regulator_config(chip);
if (ret < 0)
goto error;
ret = da9121_config_irq(i2c, chip);
error:
return ret;
}
i2c: Make remove callback return void The value returned by an i2c driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Crt Mori <cmo@melexis.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013 Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/* Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5 Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860 Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power Acked-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-15 16:02:30 +08:00
static void da9121_i2c_remove(struct i2c_client *i2c)
{
struct da9121 *chip = i2c_get_clientdata(i2c);
const int mask_all[4] = { 0xFF, 0xFF, 0xFF, 0xFF };
int ret;
free_irq(chip->chip_irq, chip);
cancel_delayed_work_sync(&chip->work);
ret = regmap_bulk_write(chip->regmap, DA9121_REG_SYS_MASK_0, mask_all, 4);
if (ret != 0)
dev_err(chip->dev, "Failed to set IRQ masks: %d\n", ret);
}
static const struct i2c_device_id da9121_i2c_id[] = {
{"da9121", DA9121_TYPE_DA9121_DA9130},
{"da9130", DA9121_TYPE_DA9121_DA9130},
{"da9217", DA9121_TYPE_DA9217},
{"da9122", DA9121_TYPE_DA9122_DA9131},
{"da9131", DA9121_TYPE_DA9122_DA9131},
{"da9220", DA9121_TYPE_DA9220_DA9132},
{"da9132", DA9121_TYPE_DA9220_DA9132},
{"da9141", DA9121_TYPE_DA9141},
{"da9142", DA9121_TYPE_DA9142},
{},
};
MODULE_DEVICE_TABLE(i2c, da9121_i2c_id);
static struct i2c_driver da9121_regulator_driver = {
.driver = {
.name = "da9121",
.of_match_table = of_match_ptr(da9121_dt_ids),
},
.probe_new = da9121_i2c_probe,
.remove = da9121_i2c_remove,
.id_table = da9121_i2c_id,
};
module_i2c_driver(da9121_regulator_driver);
MODULE_LICENSE("GPL v2");