UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

regulator: da9211: support DA9213 

This is a patch for supporting DA9213.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
James Ban 2014-08-08 14:27:04 +09:00 committed by Mark Brown
parent 7d1311b93e
commit 005547e082
4 changed files with 91 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/regulator/Kconfig
View File

@ -199,13 +199,14 @@ config REGULATOR_DA9210
interface. interface.
config REGULATOR_DA9211 config REGULATOR_DA9211
tristate "Dialog Semiconductor DA9211/DA9212 regulator" tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214 regulator"
depends on I2C depends on I2C
select REGMAP_I2C select REGMAP_I2C
help help
Say y here to support for the Dialog Semiconductor DA9211/DA9212. Say y here to support for the Dialog Semiconductor DA9211/DA9212
The DA9211/DA9212 is a multi-phase synchronous step down /DA9213/DA9214.
converter 12A DC-DC Buck controlled through an I2C The DA9211/DA9212/DA9213/DA9214 is a multi-phase synchronous
step down converter 12A or 16A DC-DC Buck controlled through an I2C
interface. interface.
config REGULATOR_DBX500_PRCMU config REGULATOR_DBX500_PRCMU

95
drivers/regulator/da9211-regulator.c
View File

@ -1,5 +1,5 @@
/* /*
* da9211-regulator.c - Regulator device driver for DA9211 * da9211-regulator.c - Regulator device driver for DA9211/DA9213
* Copyright (C) 2014 Dialog Semiconductor Ltd. * Copyright (C) 2014 Dialog Semiconductor Ltd.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -27,6 +27,10 @@
#include <linux/regulator/da9211.h> #include <linux/regulator/da9211.h>
#include "da9211-regulator.h" #include "da9211-regulator.h"
/* DEVICE IDs */
#define DA9211_DEVICE_ID 0x22
#define DA9213_DEVICE_ID 0x23
#define DA9211_BUCK_MODE_SLEEP 1 #define DA9211_BUCK_MODE_SLEEP 1
#define DA9211_BUCK_MODE_SYNC 2 #define DA9211_BUCK_MODE_SYNC 2
#define DA9211_BUCK_MODE_AUTO 3 #define DA9211_BUCK_MODE_AUTO 3
@ -42,6 +46,7 @@ struct da9211 {
struct regulator_dev *rdev[DA9211_MAX_REGULATORS]; struct regulator_dev *rdev[DA9211_MAX_REGULATORS];
int num_regulator; int num_regulator;
int chip_irq; int chip_irq;
int chip_id;
}; };
static const struct regmap_range_cfg da9211_regmap_range[] = { static const struct regmap_range_cfg da9211_regmap_range[] = {
@ -52,14 +57,14 @@ static const struct regmap_range_cfg da9211_regmap_range[] = {
.window_start = 0, .window_start = 0,
.window_len = 256, .window_len = 256,
.range_min = 0, .range_min = 0,
.range_max = 2*256, .range_max = 5*128,
}, },
}; };
static const struct regmap_config da9211_regmap_config = { static const struct regmap_config da9211_regmap_config = {
.reg_bits = 8, .reg_bits = 8,
.val_bits = 8, .val_bits = 8,
.max_register = 2 * 256, .max_register = 5 * 128,
.ranges = da9211_regmap_range, .ranges = da9211_regmap_range,
.num_ranges = ARRAY_SIZE(da9211_regmap_range), .num_ranges = ARRAY_SIZE(da9211_regmap_range),
}; };
@ -69,11 +74,20 @@ static const struct regmap_config da9211_regmap_config = {
#define DA9211_MAX_MV 1570 #define DA9211_MAX_MV 1570
#define DA9211_STEP_MV 10 #define DA9211_STEP_MV 10
/* Current limits for buck (uA) indices corresponds with register values */ /* Current limits for DA9211 buck (uA) indices
* corresponds with register values
*/
static const int da9211_current_limits[] = { static const int da9211_current_limits[] = {
2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, 2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000,
3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000 3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000
}; };
/* Current limits for DA9213 buck (uA) indices
* corresponds with register values
*/
static const int da9213_current_limits[] = {
3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
};
static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev) static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev)
{ {
@ -129,12 +143,26 @@ static int da9211_set_current_limit(struct regulator_dev *rdev, int min,
{ {
int id = rdev_get_id(rdev); int id = rdev_get_id(rdev);
struct da9211 *chip = rdev_get_drvdata(rdev); struct da9211 *chip = rdev_get_drvdata(rdev);
int i; int i, max_size;
const int *current_limits;
switch (chip->chip_id) {
case DA9211:
current_limits = da9211_current_limits;
max_size = ARRAY_SIZE(da9211_current_limits)-1;
break;
case DA9213:
current_limits = da9213_current_limits;
max_size = ARRAY_SIZE(da9213_current_limits)-1;
break;
default:
return -EINVAL;
}
/* search for closest to maximum */ /* search for closest to maximum */
for (i = ARRAY_SIZE(da9211_current_limits)-1; i >= 0; i--) { for (i = max_size; i >= 0; i--) {
if (min <= da9211_current_limits[i] && if (min <= current_limits[i] &&
max >= da9211_current_limits[i]) { max >= current_limits[i]) {
return regmap_update_bits(chip->regmap, return regmap_update_bits(chip->regmap,
DA9211_REG_BUCK_ILIM, DA9211_REG_BUCK_ILIM,
(0x0F << id*4), (i << id*4)); (0x0F << id*4), (i << id*4));
@ -150,14 +178,28 @@ static int da9211_get_current_limit(struct regulator_dev *rdev)
struct da9211 *chip = rdev_get_drvdata(rdev); struct da9211 *chip = rdev_get_drvdata(rdev);
unsigned int data; unsigned int data;
int ret; int ret;
const int *current_limits;
switch (chip->chip_id) {
case DA9211:
current_limits = da9211_current_limits;
break;
case DA9213:
current_limits = da9213_current_limits;
break;
default:
return -EINVAL;
}
ret = regmap_read(chip->regmap, DA9211_REG_BUCK_ILIM, &data); ret = regmap_read(chip->regmap, DA9211_REG_BUCK_ILIM, &data);
if (ret < 0) if (ret < 0)
return ret; return ret;
/* select one of 16 values: 0000 (2000mA) to 1111 (5000mA) */ /* select one of 16 values: 0000 (2000mA or 3000mA)
* to 1111 (5000mA or 6000mA).
*/
data = (data >> id*4) & 0x0F; data = (data >> id*4) & 0x0F;
return da9211_current_limits[data]; return current_limits[data];
} }
static struct regulator_ops da9211_buck_ops = { static struct regulator_ops da9211_buck_ops = {
@ -264,10 +306,7 @@ static int da9211_regulator_init(struct da9211 *chip)
} }
for (i = 0; i < chip->num_regulator; i++) { for (i = 0; i < chip->num_regulator; i++) {
if (chip->pdata) config.init_data = &(chip->pdata->init_data[i]);
config.init_data =
&(chip->pdata->init_data[i]);
config.dev = chip->dev; config.dev = chip->dev;
config.driver_data = chip; config.driver_data = chip;
config.regmap = chip->regmap; config.regmap = chip->regmap;
@ -301,6 +340,7 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
{ {
struct da9211 *chip; struct da9211 *chip;
int error, ret; int error, ret;
unsigned int data;
chip = devm_kzalloc(&i2c->dev, sizeof(struct da9211), GFP_KERNEL); chip = devm_kzalloc(&i2c->dev, sizeof(struct da9211), GFP_KERNEL);
@ -308,7 +348,7 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
chip->regmap = devm_regmap_init_i2c(i2c, &da9211_regmap_config); chip->regmap = devm_regmap_init_i2c(i2c, &da9211_regmap_config);
if (IS_ERR(chip->regmap)) { if (IS_ERR(chip->regmap)) {
error = PTR_ERR(chip->regmap); error = PTR_ERR(chip->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n", dev_err(chip->dev, "Failed to allocate register map: %d\n",
error); error);
return error; return error;
} }
@ -316,8 +356,22 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
i2c_set_clientdata(i2c, chip); i2c_set_clientdata(i2c, chip);
chip->pdata = i2c->dev.platform_data; chip->pdata = i2c->dev.platform_data;
if (!chip->pdata) {
dev_err(&i2c->dev, "No platform init data supplied\n"); ret = regmap_read(chip->regmap, DA9211_REG_DEVICE_ID, &data);
if (ret < 0) {
dev_err(chip->dev, "Failed to read DEVICE_ID reg: %d\n", ret);
return ret;
}
switch (data) {
case DA9211_DEVICE_ID:
chip->chip_id = DA9211;
break;
case DA9213_DEVICE_ID:
chip->chip_id = DA9213;
break;
default:
dev_err(chip->dev, "Unsupported device id = 0x%x.\n", data);
return -ENODEV; return -ENODEV;
} }
@ -340,13 +394,14 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
ret = da9211_regulator_init(chip); ret = da9211_regulator_init(chip);
if (ret < 0) if (ret < 0)
dev_err(&i2c->dev, "Failed to initialize regulator: %d\n", ret); dev_err(chip->dev, "Failed to initialize regulator: %d\n", ret);
return ret; return ret;
} }
static const struct i2c_device_id da9211_i2c_id[] = { static const struct i2c_device_id da9211_i2c_id[] = {
{"da9211", 0}, {"da9211", DA9211},
{"da9213", DA9213},
{}, {},
}; };
@ -364,5 +419,5 @@ static struct i2c_driver da9211_regulator_driver = {
module_i2c_driver(da9211_regulator_driver); module_i2c_driver(da9211_regulator_driver);
MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>"); MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211"); MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211/DA9213");
MODULE_LICENSE("GPL v2"); MODULE_LICENSE("GPL v2");

7
drivers/regulator/da9211-regulator.h
View File

@ -1,5 +1,5 @@
/* /*
* da9211-regulator.h - Regulator definitions for DA9211 * da9211-regulator.h - Regulator definitions for DA9211/DA9213
* Copyright (C) 2014 Dialog Semiconductor Ltd. * Copyright (C) 2014 Dialog Semiconductor Ltd.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -53,12 +53,15 @@
/* BUCK Phase Selection*/ /* BUCK Phase Selection*/
#define DA9211_REG_CONFIG_E 0x147 #define DA9211_REG_CONFIG_E 0x147
/* Device ID */
#define DA9211_REG_DEVICE_ID 0x201
/* /*
* Registers bits * Registers bits
*/ */
/* DA9211_REG_PAGE_CON (addr=0x00) */ /* DA9211_REG_PAGE_CON (addr=0x00) */
#define DA9211_REG_PAGE_SHIFT 1 #define DA9211_REG_PAGE_SHIFT 1
#define DA9211_REG_PAGE_MASK 0x02 #define DA9211_REG_PAGE_MASK 0x06
/* On I2C registers 0x00 - 0xFF */ /* On I2C registers 0x00 - 0xFF */
#define DA9211_REG_PAGE0 0 #define DA9211_REG_PAGE0 0
/* On I2C registers 0x100 - 0x1FF */ /* On I2C registers 0x100 - 0x1FF */

7
include/linux/regulator/da9211.h
View File

@ -1,5 +1,5 @@
/* /*
* da9211.h - Regulator device driver for DA9211 * da9211.h - Regulator device driver for DA9211/DA9213
* Copyright (C) 2014 Dialog Semiconductor Ltd. * Copyright (C) 2014 Dialog Semiconductor Ltd.
* *
* This library is free software; you can redistribute it and/or * This library is free software; you can redistribute it and/or
@ -20,6 +20,11 @@
#define DA9211_MAX_REGULATORS 2 #define DA9211_MAX_REGULATORS 2
enum da9211_chip_id {
DA9211,
DA9213,
};
struct da9211_pdata { struct da9211_pdata {
/* /*
* Number of buck * Number of buck