mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
0301987a89
Declare regulator_ops structure as const as it is only stored in the ops field of a regulator_desc structure. This field is of type const, so regulator_ops structures having this property can be made const too. File size before: drivers/regulator/max77802-regulator.o text data bss dec hex filename 11811 1552 0 13363 3433 regulator/max77802-regulator.o File size after: drivers/regulator/max77802-regulator.o text data bss dec hex filename 13091 272 0 13363 3433 regulator/max77802-regulator.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
611 lines
19 KiB
C
611 lines
19 KiB
C
/*
|
|
* max77802.c - Regulator driver for the Maxim 77802
|
|
*
|
|
* Copyright (C) 2013-2014 Google, Inc
|
|
* Simon Glass <sjg@chromium.org>
|
|
*
|
|
* Copyright (C) 2012 Samsung Electronics
|
|
* Chiwoong Byun <woong.byun@samsung.com>
|
|
* Jonghwa Lee <jonghwa3.lee@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* This driver is based on max8997.c
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/bug.h>
|
|
#include <linux/err.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/gpio/consumer.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
#include <linux/mfd/max77686.h>
|
|
#include <linux/mfd/max77686-private.h>
|
|
#include <dt-bindings/regulator/maxim,max77802.h>
|
|
|
|
/* Default ramp delay in case it is not manually set */
|
|
#define MAX77802_RAMP_DELAY 100000 /* uV/us */
|
|
|
|
#define MAX77802_OPMODE_SHIFT_LDO 6
|
|
#define MAX77802_OPMODE_BUCK234_SHIFT 4
|
|
#define MAX77802_OPMODE_MASK 0x3
|
|
|
|
#define MAX77802_VSEL_MASK 0x3F
|
|
#define MAX77802_DVS_VSEL_MASK 0xFF
|
|
|
|
#define MAX77802_RAMP_RATE_MASK_2BIT 0xC0
|
|
#define MAX77802_RAMP_RATE_SHIFT_2BIT 6
|
|
#define MAX77802_RAMP_RATE_MASK_4BIT 0xF0
|
|
#define MAX77802_RAMP_RATE_SHIFT_4BIT 4
|
|
|
|
#define MAX77802_STATUS_OFF 0x0
|
|
#define MAX77802_OFF_PWRREQ 0x1
|
|
#define MAX77802_LP_PWRREQ 0x2
|
|
|
|
/* MAX77802 has two register formats: 2-bit and 4-bit */
|
|
static const unsigned int ramp_table_77802_2bit[] = {
|
|
12500,
|
|
25000,
|
|
50000,
|
|
100000,
|
|
};
|
|
|
|
static unsigned int ramp_table_77802_4bit[] = {
|
|
1000, 2000, 3030, 4000,
|
|
5000, 5880, 7140, 8330,
|
|
9090, 10000, 11110, 12500,
|
|
16670, 25000, 50000, 100000,
|
|
};
|
|
|
|
struct max77802_regulator_prv {
|
|
/* Array indexed by regulator id */
|
|
unsigned int opmode[MAX77802_REG_MAX];
|
|
};
|
|
|
|
static inline unsigned int max77802_map_mode(unsigned int mode)
|
|
{
|
|
return mode == MAX77802_OPMODE_NORMAL ?
|
|
REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY;
|
|
}
|
|
|
|
static int max77802_get_opmode_shift(int id)
|
|
{
|
|
if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 &&
|
|
id <= MAX77802_BUCK10))
|
|
return 0;
|
|
|
|
if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4)
|
|
return MAX77802_OPMODE_BUCK234_SHIFT;
|
|
|
|
if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35)
|
|
return MAX77802_OPMODE_SHIFT_LDO;
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* max77802_set_suspend_disable - Disable the regulator during system suspend
|
|
* @rdev: regulator to mark as disabled
|
|
*
|
|
* All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ.
|
|
* Configure the regulator so the PMIC will turn it OFF during system suspend.
|
|
*/
|
|
static int max77802_set_suspend_disable(struct regulator_dev *rdev)
|
|
{
|
|
unsigned int val = MAX77802_OFF_PWRREQ;
|
|
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
int shift = max77802_get_opmode_shift(id);
|
|
|
|
max77802->opmode[id] = val;
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
rdev->desc->enable_mask, val << shift);
|
|
}
|
|
|
|
/*
|
|
* Some LDOs support Low Power Mode while the system is running.
|
|
*
|
|
* LDOs 1, 3, 20, 21.
|
|
*/
|
|
static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode)
|
|
{
|
|
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
unsigned int val;
|
|
int shift = max77802_get_opmode_shift(id);
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_STANDBY:
|
|
val = MAX77802_OPMODE_LP; /* ON in Low Power Mode */
|
|
break;
|
|
case REGULATOR_MODE_NORMAL:
|
|
val = MAX77802_OPMODE_NORMAL; /* ON in Normal Mode */
|
|
break;
|
|
default:
|
|
dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
|
|
rdev->desc->name, mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
max77802->opmode[id] = val;
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
rdev->desc->enable_mask, val << shift);
|
|
}
|
|
|
|
static unsigned max77802_get_mode(struct regulator_dev *rdev)
|
|
{
|
|
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
|
|
return max77802_map_mode(max77802->opmode[id]);
|
|
}
|
|
|
|
/**
|
|
* max77802_set_suspend_mode - set regulator opmode when the system is suspended
|
|
* @rdev: regulator to change mode
|
|
* @mode: operating mode to be set
|
|
*
|
|
* Will set the operating mode for the regulators during system suspend.
|
|
* This function is valid for the three different enable control logics:
|
|
*
|
|
* Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35)
|
|
* Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21)
|
|
* Enable Control Logic3 by PWRREQ (LDO 3)
|
|
*
|
|
* If setting the regulator mode fails, the function only warns but does
|
|
* not return an error code to avoid the regulator core to stop setting
|
|
* the operating mode for the remaining regulators.
|
|
*/
|
|
static int max77802_set_suspend_mode(struct regulator_dev *rdev,
|
|
unsigned int mode)
|
|
{
|
|
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
unsigned int val;
|
|
int shift = max77802_get_opmode_shift(id);
|
|
|
|
/*
|
|
* If the regulator has been disabled for suspend
|
|
* then is invalid to try setting a suspend mode.
|
|
*/
|
|
if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) {
|
|
dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n",
|
|
rdev->desc->name, mode);
|
|
return 0;
|
|
}
|
|
|
|
switch (mode) {
|
|
case REGULATOR_MODE_STANDBY:
|
|
/*
|
|
* If the regulator opmode is normal then enable
|
|
* ON in Low Power Mode by PWRREQ. If the mode is
|
|
* already Low Power then no action is required.
|
|
*/
|
|
if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL)
|
|
val = MAX77802_LP_PWRREQ;
|
|
else
|
|
return 0;
|
|
break;
|
|
case REGULATOR_MODE_NORMAL:
|
|
/*
|
|
* If the regulator operating mode is Low Power then
|
|
* normal is not a valid opmode in suspend. If the
|
|
* mode is already normal then no action is required.
|
|
*/
|
|
if (max77802->opmode[id] == MAX77802_OPMODE_LP)
|
|
dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n",
|
|
rdev->desc->name, mode);
|
|
return 0;
|
|
default:
|
|
dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
|
|
rdev->desc->name, mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
rdev->desc->enable_mask, val << shift);
|
|
}
|
|
|
|
static int max77802_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
|
|
int id = rdev_get_id(rdev);
|
|
int shift = max77802_get_opmode_shift(id);
|
|
|
|
if (max77802->opmode[id] == MAX77802_OFF_PWRREQ)
|
|
max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
|
|
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
rdev->desc->enable_mask,
|
|
max77802->opmode[id] << shift);
|
|
}
|
|
|
|
static int max77802_find_ramp_value(struct regulator_dev *rdev,
|
|
const unsigned int limits[], int size,
|
|
unsigned int ramp_delay)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
if (ramp_delay <= limits[i])
|
|
return i;
|
|
}
|
|
|
|
/* Use maximum value for no ramp control */
|
|
dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n",
|
|
rdev->desc->name, ramp_delay);
|
|
return size - 1;
|
|
}
|
|
|
|
/* Used for BUCKs 2-4 */
|
|
static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev,
|
|
int ramp_delay)
|
|
{
|
|
int id = rdev_get_id(rdev);
|
|
unsigned int ramp_value;
|
|
|
|
if (id > MAX77802_BUCK4) {
|
|
dev_warn(&rdev->dev,
|
|
"%s: regulator: ramp delay not supported\n",
|
|
rdev->desc->name);
|
|
return -EINVAL;
|
|
}
|
|
ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit,
|
|
ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay);
|
|
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
MAX77802_RAMP_RATE_MASK_2BIT,
|
|
ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT);
|
|
}
|
|
|
|
/* For BUCK1, 6 */
|
|
static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev,
|
|
int ramp_delay)
|
|
{
|
|
unsigned int ramp_value;
|
|
|
|
ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit,
|
|
ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay);
|
|
|
|
return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
|
|
MAX77802_RAMP_RATE_MASK_4BIT,
|
|
ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT);
|
|
}
|
|
|
|
/*
|
|
* LDOs 2, 4-19, 22-35
|
|
*/
|
|
static const struct regulator_ops max77802_ldo_ops_logic1 = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = max77802_enable,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_suspend_disable = max77802_set_suspend_disable,
|
|
.set_suspend_mode = max77802_set_suspend_mode,
|
|
};
|
|
|
|
/*
|
|
* LDOs 1, 20, 21, 3
|
|
*/
|
|
static const struct regulator_ops max77802_ldo_ops_logic2 = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = max77802_enable,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_mode = max77802_set_mode,
|
|
.get_mode = max77802_get_mode,
|
|
.set_suspend_mode = max77802_set_suspend_mode,
|
|
};
|
|
|
|
/* BUCKS 1, 6 */
|
|
static const struct regulator_ops max77802_buck_16_dvs_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = max77802_enable,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = max77802_set_ramp_delay_4bit,
|
|
.set_suspend_disable = max77802_set_suspend_disable,
|
|
};
|
|
|
|
/* BUCKs 2-4 */
|
|
static const struct regulator_ops max77802_buck_234_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = max77802_enable,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = max77802_set_ramp_delay_2bit,
|
|
.set_suspend_disable = max77802_set_suspend_disable,
|
|
.set_suspend_mode = max77802_set_suspend_mode,
|
|
};
|
|
|
|
/* BUCKs 5, 7-10 */
|
|
static const struct regulator_ops max77802_buck_dvs_ops = {
|
|
.list_voltage = regulator_list_voltage_linear,
|
|
.map_voltage = regulator_map_voltage_linear,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
.enable = max77802_enable,
|
|
.disable = regulator_disable_regmap,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
.set_voltage_time_sel = regulator_set_voltage_time_sel,
|
|
.set_ramp_delay = max77802_set_ramp_delay_2bit,
|
|
.set_suspend_disable = max77802_set_suspend_disable,
|
|
};
|
|
|
|
/* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */
|
|
#define regulator_77802_desc_p_ldo(num, supply, log) { \
|
|
.name = "LDO"#num, \
|
|
.of_match = of_match_ptr("LDO"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_LDO##num, \
|
|
.supply_name = "inl"#supply, \
|
|
.ops = &max77802_ldo_ops_logic##log, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 800000, \
|
|
.uV_step = 50000, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 1 << 6, \
|
|
.vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \
|
|
.vsel_mask = MAX77802_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \
|
|
.enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
/* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */
|
|
#define regulator_77802_desc_n_ldo(num, supply, log) { \
|
|
.name = "LDO"#num, \
|
|
.of_match = of_match_ptr("LDO"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_LDO##num, \
|
|
.supply_name = "inl"#supply, \
|
|
.ops = &max77802_ldo_ops_logic##log, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 800000, \
|
|
.uV_step = 25000, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 1 << 6, \
|
|
.vsel_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \
|
|
.vsel_mask = MAX77802_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_LDO1CTRL1 + num - 1, \
|
|
.enable_mask = MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
/* BUCKs 1, 6 */
|
|
#define regulator_77802_desc_16_buck(num) { \
|
|
.name = "BUCK"#num, \
|
|
.of_match = of_match_ptr("BUCK"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_BUCK##num, \
|
|
.supply_name = "inb"#num, \
|
|
.ops = &max77802_buck_16_dvs_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 612500, \
|
|
.uV_step = 6250, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 1 << 8, \
|
|
.vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \
|
|
.vsel_mask = MAX77802_DVS_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \
|
|
.enable_mask = MAX77802_OPMODE_MASK, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
/* BUCKS 2-4 */
|
|
#define regulator_77802_desc_234_buck(num) { \
|
|
.name = "BUCK"#num, \
|
|
.of_match = of_match_ptr("BUCK"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_BUCK##num, \
|
|
.supply_name = "inb"#num, \
|
|
.ops = &max77802_buck_234_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 600000, \
|
|
.uV_step = 6250, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 0x91, \
|
|
.vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \
|
|
.vsel_mask = MAX77802_DVS_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \
|
|
.enable_mask = MAX77802_OPMODE_MASK << \
|
|
MAX77802_OPMODE_BUCK234_SHIFT, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
/* BUCK 5 */
|
|
#define regulator_77802_desc_buck5(num) { \
|
|
.name = "BUCK"#num, \
|
|
.of_match = of_match_ptr("BUCK"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_BUCK##num, \
|
|
.supply_name = "inb"#num, \
|
|
.ops = &max77802_buck_dvs_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 750000, \
|
|
.uV_step = 50000, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 1 << 6, \
|
|
.vsel_reg = MAX77802_REG_BUCK5OUT, \
|
|
.vsel_mask = MAX77802_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_BUCK5CTRL, \
|
|
.enable_mask = MAX77802_OPMODE_MASK, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
/* BUCKs 7-10 */
|
|
#define regulator_77802_desc_buck7_10(num) { \
|
|
.name = "BUCK"#num, \
|
|
.of_match = of_match_ptr("BUCK"#num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.id = MAX77802_BUCK##num, \
|
|
.supply_name = "inb"#num, \
|
|
.ops = &max77802_buck_dvs_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.min_uV = 750000, \
|
|
.uV_step = 50000, \
|
|
.ramp_delay = MAX77802_RAMP_DELAY, \
|
|
.n_voltages = 1 << 6, \
|
|
.vsel_reg = MAX77802_REG_BUCK7OUT + (num - 7) * 3, \
|
|
.vsel_mask = MAX77802_VSEL_MASK, \
|
|
.enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \
|
|
.enable_mask = MAX77802_OPMODE_MASK, \
|
|
.of_map_mode = max77802_map_mode, \
|
|
}
|
|
|
|
static const struct regulator_desc regulators[] = {
|
|
regulator_77802_desc_16_buck(1),
|
|
regulator_77802_desc_234_buck(2),
|
|
regulator_77802_desc_234_buck(3),
|
|
regulator_77802_desc_234_buck(4),
|
|
regulator_77802_desc_buck5(5),
|
|
regulator_77802_desc_16_buck(6),
|
|
regulator_77802_desc_buck7_10(7),
|
|
regulator_77802_desc_buck7_10(8),
|
|
regulator_77802_desc_buck7_10(9),
|
|
regulator_77802_desc_buck7_10(10),
|
|
regulator_77802_desc_n_ldo(1, 10, 2),
|
|
regulator_77802_desc_n_ldo(2, 10, 1),
|
|
regulator_77802_desc_p_ldo(3, 3, 2),
|
|
regulator_77802_desc_p_ldo(4, 6, 1),
|
|
regulator_77802_desc_p_ldo(5, 3, 1),
|
|
regulator_77802_desc_p_ldo(6, 3, 1),
|
|
regulator_77802_desc_p_ldo(7, 3, 1),
|
|
regulator_77802_desc_n_ldo(8, 1, 1),
|
|
regulator_77802_desc_p_ldo(9, 5, 1),
|
|
regulator_77802_desc_p_ldo(10, 4, 1),
|
|
regulator_77802_desc_p_ldo(11, 4, 1),
|
|
regulator_77802_desc_p_ldo(12, 9, 1),
|
|
regulator_77802_desc_p_ldo(13, 4, 1),
|
|
regulator_77802_desc_p_ldo(14, 4, 1),
|
|
regulator_77802_desc_n_ldo(15, 1, 1),
|
|
regulator_77802_desc_n_ldo(17, 2, 1),
|
|
regulator_77802_desc_p_ldo(18, 7, 1),
|
|
regulator_77802_desc_p_ldo(19, 5, 1),
|
|
regulator_77802_desc_p_ldo(20, 7, 2),
|
|
regulator_77802_desc_p_ldo(21, 6, 2),
|
|
regulator_77802_desc_p_ldo(23, 9, 1),
|
|
regulator_77802_desc_p_ldo(24, 6, 1),
|
|
regulator_77802_desc_p_ldo(25, 9, 1),
|
|
regulator_77802_desc_p_ldo(26, 9, 1),
|
|
regulator_77802_desc_n_ldo(27, 2, 1),
|
|
regulator_77802_desc_p_ldo(28, 7, 1),
|
|
regulator_77802_desc_p_ldo(29, 7, 1),
|
|
regulator_77802_desc_n_ldo(30, 2, 1),
|
|
regulator_77802_desc_p_ldo(32, 9, 1),
|
|
regulator_77802_desc_p_ldo(33, 6, 1),
|
|
regulator_77802_desc_p_ldo(34, 9, 1),
|
|
regulator_77802_desc_n_ldo(35, 2, 1),
|
|
};
|
|
|
|
static int max77802_pmic_probe(struct platform_device *pdev)
|
|
{
|
|
struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
|
|
struct max77802_regulator_prv *max77802;
|
|
int i, val;
|
|
struct regulator_config config = { };
|
|
|
|
max77802 = devm_kzalloc(&pdev->dev,
|
|
sizeof(struct max77802_regulator_prv),
|
|
GFP_KERNEL);
|
|
if (!max77802)
|
|
return -ENOMEM;
|
|
|
|
config.dev = iodev->dev;
|
|
config.regmap = iodev->regmap;
|
|
config.driver_data = max77802;
|
|
platform_set_drvdata(pdev, max77802);
|
|
|
|
for (i = 0; i < MAX77802_REG_MAX; i++) {
|
|
struct regulator_dev *rdev;
|
|
int id = regulators[i].id;
|
|
int shift = max77802_get_opmode_shift(id);
|
|
int ret;
|
|
|
|
ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val);
|
|
if (ret < 0) {
|
|
dev_warn(&pdev->dev,
|
|
"cannot read current mode for %d\n", i);
|
|
val = MAX77802_OPMODE_NORMAL;
|
|
} else {
|
|
val = val >> shift & MAX77802_OPMODE_MASK;
|
|
}
|
|
|
|
/*
|
|
* If the regulator is disabled and the system warm rebooted,
|
|
* the hardware reports OFF as the regulator operating mode.
|
|
* Default to operating mode NORMAL in that case.
|
|
*/
|
|
if (val == MAX77802_STATUS_OFF)
|
|
max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
|
|
else
|
|
max77802->opmode[id] = val;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev,
|
|
®ulators[i], &config);
|
|
if (IS_ERR(rdev)) {
|
|
ret = PTR_ERR(rdev);
|
|
dev_err(&pdev->dev,
|
|
"regulator init failed for %d: %d\n", i, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id max77802_pmic_id[] = {
|
|
{"max77802-pmic", 0},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, max77802_pmic_id);
|
|
|
|
static struct platform_driver max77802_pmic_driver = {
|
|
.driver = {
|
|
.name = "max77802-pmic",
|
|
},
|
|
.probe = max77802_pmic_probe,
|
|
.id_table = max77802_pmic_id,
|
|
};
|
|
|
|
module_platform_driver(max77802_pmic_driver);
|
|
|
|
MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver");
|
|
MODULE_AUTHOR("Simon Glass <sjg@chromium.org>");
|
|
MODULE_LICENSE("GPL");
|