[PATCH v5 1/3] mfd: max8997: use regmap to access registers

Robert Baldyga
2014-11-12T07:23:51Z

This patch modifies max8997 driver and each associated function driver,
to use regmap instead of operating directly on i2c bus. It will allow to
simplify IRQ handling using regmap-irq.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

[For extcon part]
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>

[For leds part]
Acked-by: Bryan Wu <cooloney@gmail.com>

[For the mfd part]
Acked-by: Lee Jones <lee.jones@linaro.org>
---
drivers/extcon/extcon-max8997.c | 31 ++++----
drivers/input/misc/max8997_haptic.c | 34 +++++----
drivers/leds/leds-max8997.c | 13 ++--
drivers/mfd/Kconfig | 1 +
drivers/mfd/max8997-irq.c | 64 +++++++---------
drivers/mfd/max8997.c | 141 ++++++++++++++++--------------------
drivers/power/max8997_charger.c | 33 +++++----
drivers/regulator/max8997.c | 87 +++++++++++-----------
drivers/rtc/rtc-max8997.c | 56 +++++++-------
include/linux/mfd/max8997-private.h | 17 ++---
10 files changed, 228 insertions(+), 249 deletions(-)

diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index 75e501c..2aafd5b 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -27,6 +27,7 @@
#include <linux/mfd/max8997-private.h>
#include <linux/extcon.h>
#include <linux/irqdomain.h>
+#include <linux/regmap.h>

#define DEV_NAME "max8997-muic"
#define DELAY_MS_DEFAULT 20000 /* unit: millisecond */
@@ -116,7 +117,7 @@ enum max8997_muic_charger_type {

struct max8997_muic_info {
struct device *dev;
- struct i2c_client *muic;
+ struct max8997_dev *max8997;
struct extcon_dev *edev;
int prev_cable_type;
int prev_chg_type;
@@ -190,10 +191,10 @@ static int max8997_muic_set_debounce_time(struct max8997_muic_info *info,
case ADC_DEBOUNCE_TIME_10MS:
case ADC_DEBOUNCE_TIME_25MS:
case ADC_DEBOUNCE_TIME_38_62MS:
- ret = max8997_update_reg(info->muic,
+ ret = regmap_update_bits(info->max8997->regmap_muic,
MAX8997_MUIC_REG_CONTROL3,
- time << CONTROL3_ADCDBSET_SHIFT,
- CONTROL3_ADCDBSET_MASK);
+ CONTROL3_ADCDBSET_MASK,
+ time << CONTROL3_ADCDBSET_SHIFT);
if (ret) {
dev_err(info->dev, "failed to set ADC debounce time\n");
return ret;
@@ -228,8 +229,8 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl1 = CONTROL1_SW_OPEN;

- ret = max8997_update_reg(info->muic,
- MAX8997_MUIC_REG_CONTROL1, ctrl1, COMP_SW_MASK);
+ ret = regmap_update_bits(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_CONTROL1, COMP_SW_MASK, ctrl1);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -240,9 +241,9 @@ static int max8997_muic_set_path(struct max8997_muic_info *info,
else
ctrl2 |= CONTROL2_LOWPWR_MASK; /* LowPwr=1, CPEn=0 */

- ret = max8997_update_reg(info->muic,
- MAX8997_MUIC_REG_CONTROL2, ctrl2,
- CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK);
+ ret = regmap_update_bits(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_CONTROL2,
+ CONTROL2_LOWPWR_MASK | CONTROL2_CPEN_MASK, ctrl2);
if (ret < 0) {
dev_err(info->dev, "failed to update MUIC register\n");
return ret;
@@ -543,8 +544,8 @@ static void max8997_muic_irq_work(struct work_struct *work)
if (info->irq == muic_irqs[i].virq)
irq_type = muic_irqs[i].irq;

- ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
- 2, info->status);
+ ret = regmap_bulk_read(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read muic register\n");
mutex_unlock(&info->mutex);
@@ -605,8 +606,8 @@ static int max8997_muic_detect_dev(struct max8997_muic_info *info)
mutex_lock(&info->mutex);

/* Read STATUSx register to detect accessory */
- ret = max8997_bulk_read(info->muic,
- MAX8997_MUIC_REG_STATUS1, 2, info->status);
+ ret = regmap_bulk_read(info->max8997->regmap_muic,
+ MAX8997_MUIC_REG_STATUS1, info->status, 2);
if (ret) {
dev_err(info->dev, "failed to read MUIC register\n");
mutex_unlock(&info->mutex);
@@ -665,7 +666,7 @@ static int max8997_muic_probe(struct platform_device *pdev)
return -ENOMEM;

info->dev = &pdev->dev;
- info->muic = max8997->muic;
+ info->max8997 = max8997;

platform_set_drvdata(pdev, info);
mutex_init(&info->mutex);
@@ -717,7 +718,7 @@ static int max8997_muic_probe(struct platform_device *pdev)

/* Initialize registers according to platform data */
for (i = 0; i < muic_pdata->num_init_data; i++) {
- max8997_write_reg(info->muic,
+ regmap_write(info->max8997->regmap_muic,
muic_pdata->init_data[i].addr,
muic_pdata->init_data[i].data);
}
diff --git a/drivers/input/misc/max8997_haptic.c b/drivers/input/misc/max8997_haptic.c
index a363ebb..53b32b5 100644
--- a/drivers/input/misc/max8997_haptic.c
+++ b/drivers/input/misc/max8997_haptic.c
@@ -31,6 +31,7 @@
#include <linux/mfd/max8997-private.h>
#include <linux/mfd/max8997.h>
#include <linux/regulator/consumer.h>
+#include <linux/regmap.h>

/* Haptic configuration 2 register */
#define MAX8997_MOTOR_TYPE_SHIFT 7
@@ -45,7 +46,7 @@

struct max8997_haptic {
struct device *dev;
- struct i2c_client *client;
+ struct max8997_dev *max8997;
struct input_dev *input_dev;
struct regulator *regulator;

@@ -86,19 +87,19 @@ static int max8997_haptic_set_duty_cycle(struct max8997_haptic *chip)
}
switch (chip->internal_mode_pattern) {
case 0:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC1, duty_index);
break;
case 1:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC2, duty_index);
break;
case 2:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC3, duty_index);
break;
case 3:
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGPWMDC4, duty_index);
break;
default:
@@ -115,50 +116,51 @@ static void max8997_haptic_configure(struct max8997_haptic *chip)
value = chip->type << MAX8997_MOTOR_TYPE_SHIFT |
chip->enabled << MAX8997_ENABLE_SHIFT |
chip->mode << MAX8997_MODE_SHIFT | chip->pwm_divisor;
- max8997_write_reg(chip->client, MAX8997_HAPTIC_REG_CONF2, value);
+ regmap_write(chip->max8997->regmap_haptic,
+ MAX8997_HAPTIC_REG_CONF2, value);

if (chip->mode == MAX8997_INTERNAL_MODE && chip->enabled) {
value = chip->internal_mode_pattern << MAX8997_CYCLE_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_PERIOD_SHIFT |
chip->internal_mode_pattern << MAX8997_SIG_DUTY_SHIFT |
chip->internal_mode_pattern << MAX8997_PWM_DUTY_SHIFT;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_DRVCONF, value);

switch (chip->internal_mode_pattern) {
case 0:
value = chip->pattern_cycle << 4;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF1, value);
break;

case 1:
value = chip->pattern_cycle;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF1, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF2, value);
break;

case 2:
value = chip->pattern_cycle << 4;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF3, value);
break;

case 3:
value = chip->pattern_cycle;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_CYCLECONF2, value);
value = chip->pattern_signal_period;
- max8997_write_reg(chip->client,
+ regmap_write(chip->max8997->regmap_haptic,
MAX8997_HAPTIC_REG_SIGCONF4, value);
break;

@@ -277,7 +279,7 @@ static int max8997_haptic_probe(struct platform_device *pdev)
INIT_WORK(&chip->work, max8997_haptic_play_effect_work);
mutex_init(&chip->mutex);

- chip->client = iodev->haptic;
+ chip->max8997 = iodev;
chip->dev = &pdev->dev;
chip->input_dev = input_dev;
chip->pwm_period = haptic_pdata->pwm_period;
diff --git a/drivers/leds/leds-max8997.c b/drivers/leds/leds-max8997.c
index 607bc27..49bb128 100644
--- a/drivers/leds/leds-max8997.c
+++ b/drivers/leds/leds-max8997.c
@@ -18,6 +18,7 @@
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>

#define MAX8997_LED_FLASH_SHIFT 3
#define MAX8997_LED_FLASH_CUR_MASK 0xf8
@@ -53,7 +54,6 @@ static void max8997_led_set_mode(struct max8997_led *led,
enum max8997_led_mode mode)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 mask = 0, val;

switch (mode) {
@@ -89,8 +89,8 @@ static void max8997_led_set_mode(struct max8997_led *led,
}

if (mask) {
- ret = max8997_update_reg(client, MAX8997_REG_LEN_CNTL, val,
- mask);
+ ret = regmap_update_bits(led->iodev->regmap,
+ MAX8997_REG_LEN_CNTL, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
@@ -102,7 +102,6 @@ static void max8997_led_set_mode(struct max8997_led *led,
static void max8997_led_enable(struct max8997_led *led, bool enable)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 val = 0, mask = MAX8997_LED_BOOST_ENABLE_MASK;

if (led->enabled == enable)
@@ -110,7 +109,8 @@ static void max8997_led_enable(struct max8997_led *led, bool enable)

val = enable ? MAX8997_LED_BOOST_ENABLE_MASK : 0;

- ret = max8997_update_reg(client, MAX8997_REG_BOOST_CNTL, val, mask);
+ ret = regmap_update_bits(led->iodev->regmap,
+ MAX8997_REG_BOOST_CNTL, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
@@ -122,7 +122,6 @@ static void max8997_led_set_current(struct max8997_led *led,
enum led_brightness value)
{
int ret;
- struct i2c_client *client = led->iodev->i2c;
u8 val = 0, mask = 0, reg = 0;

switch (led->led_mode) {
@@ -143,7 +142,7 @@ static void max8997_led_set_current(struct max8997_led *led,
}

if (mask) {
- ret = max8997_update_reg(client, reg, val, mask);
+ ret = regmap_update_bits(led->iodev->regmap, reg, mask, val);
if (ret)
dev_err(led->iodev->dev,
"failed to update register(%d)\n", ret);
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 72d3808..ca57035 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -463,6 +463,7 @@ config MFD_MAX8997
bool "Maxim Semiconductor MAX8997/8966 PMIC Support"
depends on I2C=y
select MFD_CORE
+ select REGMAP_I2C
select IRQ_DOMAIN
help
Say yes here to add support for Maxim Semiconductor MAX8997/8966.
diff --git a/drivers/mfd/max8997-irq.c b/drivers/mfd/max8997-irq.c
index 43fa614..0e7ff39 100644
--- a/drivers/mfd/max8997-irq.c
+++ b/drivers/mfd/max8997-irq.c
@@ -26,6 +26,7 @@
#include <linux/interrupt.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>

static const u8 max8997_mask_reg[] = {
[PMIC_INT1] = MAX8997_REG_INT1MSK,
@@ -41,25 +42,6 @@ static const u8 max8997_mask_reg[] = {
[FLASH_STATUS] = MAX8997_REG_INVALID,
};

-static struct i2c_client *get_i2c(struct max8997_dev *max8997,
- enum max8997_irq_source src)
-{
- switch (src) {
- case PMIC_INT1 ... PMIC_INT4:
- return max8997->i2c;
- case FUEL_GAUGE:
- return NULL;
- case MUIC_INT1 ... MUIC_INT3:
- return max8997->muic;
- case GPIO_LOW ... GPIO_HI:
- return max8997->i2c;
- case FLASH_STATUS:
- return max8997->i2c;
- default:
- return ERR_PTR(-EINVAL);
- }
-}
-
struct max8997_irq_data {
int mask;
enum max8997_irq_source group;
@@ -124,15 +106,20 @@ static void max8997_irq_sync_unlock(struct irq_data *data)
int i;

for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
+ struct regmap *map;
u8 mask_reg = max8997_mask_reg[i];
- struct i2c_client *i2c = get_i2c(max8997, i);
+
+ if (i >= MUIC_INT1 && i <= MUIC_INT3)
+ map = max8997->regmap_muic;
+ else
+ map = max8997->regmap;

if (mask_reg == MAX8997_REG_INVALID ||
- IS_ERR_OR_NULL(i2c))
+ IS_ERR_OR_NULL(map))
continue;
max8997->irq_masks_cache[i] = max8997->irq_masks_cur[i];

- max8997_write_reg(i2c, max8997_mask_reg[i],
+ regmap_write(map, max8997_mask_reg[i],
max8997->irq_masks_cur[i]);
}

@@ -181,11 +168,11 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
{
struct max8997_dev *max8997 = data;
u8 irq_reg[MAX8997_IRQ_GROUP_NR] = {};
- u8 irq_src;
+ unsigned int irq_src;
int ret;
int i, cur_irq;

- ret = max8997_read_reg(max8997->i2c, MAX8997_REG_INTSRC, &irq_src);
+ ret = regmap_read(max8997->regmap, MAX8997_REG_INTSRC, &irq_src);
if (ret < 0) {
dev_err(max8997->dev, "Failed to read interrupt source: %d\n",
ret);
@@ -194,8 +181,8 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)

if (irq_src & MAX8997_IRQSRC_PMIC) {
/* PMIC INT1 ~ INT4 */
- max8997_bulk_read(max8997->i2c, MAX8997_REG_INT1, 4,
- &irq_reg[PMIC_INT1]);
+ regmap_bulk_read(max8997->regmap, MAX8997_REG_INT1,
+ &irq_reg[PMIC_INT1], 4);
}
if (irq_src & MAX8997_IRQSRC_FUELGAUGE) {
/*
@@ -215,8 +202,8 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
}
if (irq_src & MAX8997_IRQSRC_MUIC) {
/* MUIC INT1 ~ INT3 */
- max8997_bulk_read(max8997->muic, MAX8997_MUIC_REG_INT1, 3,
- &irq_reg[MUIC_INT1]);
+ regmap_bulk_read(max8997->regmap_muic, MAX8997_MUIC_REG_INT1,
+ &irq_reg[MUIC_INT1], 3);
}
if (irq_src & MAX8997_IRQSRC_GPIO) {
/* GPIO Interrupt */
@@ -225,8 +212,8 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
irq_reg[GPIO_LOW] = 0;
irq_reg[GPIO_HI] = 0;

- max8997_bulk_read(max8997->i2c, MAX8997_REG_GPIOCNTL1,
- MAX8997_NUM_GPIO, gpio_info);
+ regmap_bulk_read(max8997->regmap, MAX8997_REG_GPIOCNTL1,
+ gpio_info, MAX8997_NUM_GPIO);
for (i = 0; i < MAX8997_NUM_GPIO; i++) {
bool interrupt = false;

@@ -260,8 +247,10 @@ static irqreturn_t max8997_irq_thread(int irq, void *data)
}
if (irq_src & MAX8997_IRQSRC_FLASH) {
/* Flash Status Interrupt */
- ret = max8997_read_reg(max8997->i2c, MAX8997_REG_FLASHSTATUS,
- &irq_reg[FLASH_STATUS]);
+ unsigned int data;
+ ret = regmap_read(max8997->regmap,
+ MAX8997_REG_FLASHSTATUS, &data);
+ irq_reg[FLASH_STATUS] = data;
}

/* Apply masking */
@@ -312,7 +301,7 @@ int max8997_irq_init(struct max8997_dev *max8997)
struct irq_domain *domain;
int i;
int ret;
- u8 val;
+ unsigned int val;

if (!max8997->irq) {
dev_warn(max8997->dev, "No interrupt specified.\n");
@@ -323,22 +312,19 @@ int max8997_irq_init(struct max8997_dev *max8997)

/* Mask individual interrupt sources */
for (i = 0; i < MAX8997_IRQ_GROUP_NR; i++) {
- struct i2c_client *i2c;
-
max8997->irq_masks_cur[i] = 0xff;
max8997->irq_masks_cache[i] = 0xff;
- i2c = get_i2c(max8997, i);

- if (IS_ERR_OR_NULL(i2c))
+ if (IS_ERR_OR_NULL(max8997->regmap))
continue;
if (max8997_mask_reg[i] == MAX8997_REG_INVALID)
continue;

- max8997_write_reg(i2c, max8997_mask_reg[i], 0xff);
+ regmap_write(max8997->regmap, max8997_mask_reg[i], 0xff);
}

for (i = 0; i < MAX8997_NUM_GPIO; i++) {
- max8997->gpio_status[i] = (max8997_read_reg(max8997->i2c,
+ max8997->gpio_status[i] = (regmap_read(max8997->regmap,
MAX8997_REG_GPIOCNTL1 + i,
&val)
& MAX8997_GPIO_DATA_MASK) ?
diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c
index 595364e..c4a1072 100644
--- a/drivers/mfd/max8997.c
+++ b/drivers/mfd/max8997.c
@@ -33,6 +33,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>

#define I2C_ADDR_PMIC (0xCC >> 1)
#define I2C_ADDR_MUIC (0x4A >> 1)
@@ -57,81 +58,29 @@ static const struct of_device_id max8997_pmic_dt_match[] = {
};
#endif

-int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_byte_data(i2c, reg);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
-
- ret &= 0xff;
- *dest = ret;
- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_read_reg);
-
-int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_bulk_read);
-
-int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_write_byte_data(i2c, reg, value);
- mutex_unlock(&max8997->iolock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(max8997_write_reg);
-
-int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
+static const struct regmap_config max8997_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_REG_PMIC_END,
+};

- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
- mutex_unlock(&max8997->iolock);
- if (ret < 0)
- return ret;
+static const struct regmap_config max8997_regmap_rtc_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_RTC_REG_END,
+};

- return 0;
-}
-EXPORT_SYMBOL_GPL(max8997_bulk_write);
+static const struct regmap_config max8997_regmap_haptic_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_HAPTIC_REG_END,
+};

-int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
-{
- struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
- int ret;
-
- mutex_lock(&max8997->iolock);
- ret = i2c_smbus_read_byte_data(i2c, reg);
- if (ret >= 0) {
- u8 old_val = ret & 0xff;
- u8 new_val = (val & mask) | (old_val & (~mask));
- ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
- }
- mutex_unlock(&max8997->iolock);
- return ret;
-}
-EXPORT_SYMBOL_GPL(max8997_update_reg);
+static const struct regmap_config max8997_regmap_muic_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = MAX8997_MUIC_REG_END,
+};

/*
* Only the common platform data elements for max8997 are parsed here from the
@@ -230,6 +179,41 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
}
i2c_set_clientdata(max8997->muic, max8997);

+ max8997->regmap = devm_regmap_init_i2c(i2c, &max8997_regmap_config);
+ if (IS_ERR(max8997->regmap)) {
+ ret = PTR_ERR(max8997->regmap);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ return ret;
+ }
+
+ max8997->regmap_rtc = devm_regmap_init_i2c(max8997->rtc,
+ &max8997_regmap_rtc_config);
+ if (IS_ERR(max8997->regmap_rtc)) {
+ ret = PTR_ERR(max8997->regmap_rtc);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
+ max8997->regmap_haptic = devm_regmap_init_i2c(max8997->haptic,
+ &max8997_regmap_haptic_config);
+ if (IS_ERR(max8997->regmap_haptic)) {
+ ret = PTR_ERR(max8997->regmap_haptic);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
+ max8997->regmap_muic = devm_regmap_init_i2c(max8997->muic,
+ &max8997_regmap_muic_config);
+ if (IS_ERR(max8997->regmap_muic)) {
+ ret = PTR_ERR(max8997->regmap_muic);
+ dev_err(max8997->dev,
+ "failed to allocate register map: %d\n", ret);
+ goto err_regmap;
+ }
+
pm_runtime_set_active(max8997->dev);

max8997_irq_init(max8997);
@@ -254,6 +238,7 @@ static int max8997_i2c_probe(struct i2c_client *i2c,

err_mfd:
mfd_remove_devices(max8997->dev);
+err_regmap:
i2c_unregister_device(max8997->muic);
err_i2c_muic:
i2c_unregister_device(max8997->haptic);
@@ -441,15 +426,15 @@ static int max8997_freeze(struct device *dev)
int i;

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
+ regmap_read(max8997->regmap, max8997_dumpaddr_pmic[i],
&max8997->reg_dump[i]);

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
+ regmap_read(max8997->regmap_muic, max8997_dumpaddr_muic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
+ regmap_read(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);

@@ -463,15 +448,15 @@ static int max8997_restore(struct device *dev)
int i;

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
+ regmap_write(max8997->regmap, max8997_dumpaddr_pmic[i],
max8997->reg_dump[i]);

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
+ regmap_write(max8997->regmap_muic, max8997_dumpaddr_muic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END]);

for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
- max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
+ regmap_write(max8997->regmap_haptic, max8997_dumpaddr_haptic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);

diff --git a/drivers/power/max8997_charger.c b/drivers/power/max8997_charger.c
index 4bdedfe..43d8481 100644
--- a/drivers/power/max8997_charger.c
+++ b/drivers/power/max8997_charger.c
@@ -26,6 +26,7 @@
#include <linux/power_supply.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
+#include <linux/regmap.h>

struct charger_data {
struct device *dev;
@@ -46,14 +47,14 @@ static int max8997_battery_get_property(struct power_supply *psy,
{
struct charger_data *charger = container_of(psy,
struct charger_data, battery);
- struct i2c_client *i2c = charger->iodev->i2c;
int ret;
- u8 reg;
+ unsigned int reg;

switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, &reg);
if (ret)
return ret;
if ((reg & (1 << 0)) == 0x1)
@@ -62,7 +63,8 @@ static int max8997_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, &reg);
if (ret)
return ret;
if ((reg & (1 << 2)) == 0x0)
@@ -71,7 +73,8 @@ static int max8997_battery_get_property(struct power_supply *psy,
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = 0;
- ret = max8997_read_reg(i2c, MAX8997_REG_STATUS4, &reg);
+ ret = regmap_read(charger->iodev->regmap,
+ MAX8997_REG_STATUS4, &reg);
if (ret)
return ret;
/* DCINOK */
@@ -103,8 +106,8 @@ static int max8997_battery_probe(struct platform_device *pdev)
if (val > 0xf)
val = 0xf;

- ret = max8997_update_reg(iodev->i2c,
- MAX8997_REG_MBCCTRL5, val, 0xf);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL5, 0xf, val);
if (ret < 0) {
dev_err(&pdev->dev, "Cannot use i2c bus.\n");
return ret;
@@ -113,20 +116,20 @@ static int max8997_battery_probe(struct platform_device *pdev)

switch (pdata->timeout) {
case 5:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x2 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x2 << 4);
break;
case 6:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x3 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x3 << 4);
break;
case 7:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x4 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x4 << 4);
break;
case 0:
- ret = max8997_update_reg(iodev->i2c, MAX8997_REG_MBCCTRL1,
- 0x7 << 4, 0x7 << 4);
+ ret = regmap_update_bits(iodev->regmap,
+ MAX8997_REG_MBCCTRL1, 0x7 << 4, 0x7 << 4);
break;
default:
dev_err(&pdev->dev, "incorrect timeout value (%d)\n",
diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c
index 9c31e21..faefd1c 100644
--- a/drivers/regulator/max8997.c
+++ b/drivers/regulator/max8997.c
@@ -33,6 +33,7 @@
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
#include <linux/regulator/of_regulator.h>
+#include <linux/regmap.h>

struct max8997_data {
struct device *dev;
@@ -50,7 +51,7 @@ struct max8997_data {
int buck125_gpioindex;
bool ignore_gpiodvs_side_effect;

- u8 saved_states[MAX8997_REG_MAX];
+ unsigned int saved_states[MAX8997_REG_MAX];
};

static const unsigned int safeoutvolt[] = {
@@ -257,15 +258,14 @@ static int max8997_get_enable_register(struct regulator_dev *rdev,
static int max8997_reg_is_enabled(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
- u8 val;
+ unsigned int val;

ret = max8997_get_enable_register(rdev, &reg, &mask, &pattern);
if (ret)
return ret;

- ret = max8997_read_reg(i2c, reg, &val);
+ ret = regmap_read(max8997->iodev->regmap, reg, &val);
if (ret)
return ret;

@@ -275,27 +275,25 @@ static int max8997_reg_is_enabled(struct regulator_dev *rdev)
static int max8997_reg_enable(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;

ret = max8997_get_enable_register(rdev, &reg, &mask, &pattern);
if (ret)
return ret;

- return max8997_update_reg(i2c, reg, pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, pattern);
}

static int max8997_reg_disable(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;

ret = max8997_get_enable_register(rdev, &reg, &mask, &pattern);
if (ret)
return ret;

- return max8997_update_reg(i2c, reg, ~pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, ~pattern);
}

static int max8997_get_voltage_register(struct regulator_dev *rdev,
@@ -367,15 +365,14 @@ static int max8997_get_voltage_register(struct regulator_dev *rdev,
static int max8997_get_voltage_sel(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int reg, shift, mask, ret;
- u8 val;
+ unsigned int val;

ret = max8997_get_voltage_register(rdev, &reg, &shift, &mask);
if (ret)
return ret;

- ret = max8997_read_reg(i2c, reg, &val);
+ ret = regmap_read(max8997->iodev->regmap, reg, &val);
if (ret)
return ret;

@@ -412,7 +409,6 @@ static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int rid = rdev_get_id(rdev);
int lb, ub;
int reg, shift = 0, mask, ret = 0;
@@ -454,7 +450,8 @@ static int max8997_set_voltage_charger_cv(struct regulator_dev *rdev,

*selector = val;

- ret = max8997_update_reg(i2c, reg, val << shift, mask);
+ ret = regmap_update_bits(max8997->iodev->regmap,
+ reg, mask, val << shift);

return ret;
}
@@ -467,7 +464,6 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
const struct voltage_map_desc *desc;
int rid = rdev_get_id(rdev);
int i, reg, shift, mask, ret;
@@ -499,7 +495,8 @@ static int max8997_set_voltage_ldobuck(struct regulator_dev *rdev,
if (ret)
return ret;

- ret = max8997_update_reg(i2c, reg, i << shift, mask << shift);
+ ret = regmap_update_bits(max8997->iodev->regmap,
+ reg, mask << shift, i << shift);
*selector = i;

return ret;
@@ -709,7 +706,6 @@ static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int rid = rdev_get_id(rdev);
int reg, shift = 0, mask, ret;

@@ -720,13 +716,13 @@ static int max8997_set_voltage_safeout_sel(struct regulator_dev *rdev,
if (ret)
return ret;

- return max8997_update_reg(i2c, reg, selector << shift, mask << shift);
+ return regmap_update_bits(max8997->iodev->regmap,
+ reg, mask << shift, selector << shift);
}

static int max8997_reg_disable_suspend(struct regulator_dev *rdev)
{
struct max8997_data *max8997 = rdev_get_drvdata(rdev);
- struct i2c_client *i2c = max8997->iodev->i2c;
int ret, reg, mask, pattern;
int rid = rdev_get_id(rdev);

@@ -734,20 +730,22 @@ static int max8997_reg_disable_suspend(struct regulator_dev *rdev)
if (ret)
return ret;

- max8997_read_reg(i2c, reg, &max8997->saved_states[rid]);
+ regmap_read(max8997->iodev->regmap,
+ reg, &max8997->saved_states[rid]);

if (rid == MAX8997_LDO1 ||
rid == MAX8997_LDO10 ||
rid == MAX8997_LDO21) {
dev_dbg(&rdev->dev, "Conditional Power-Off for %s\n",
rdev->desc->name);
- return max8997_update_reg(i2c, reg, 0x40, mask);
+ return regmap_update_bits(max8997->iodev->regmap,
+ reg, mask, 0x40);
}

dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n",
rdev->desc->name, max8997->saved_states[rid] & mask,
(~pattern) & mask);
- return max8997_update_reg(i2c, reg, ~pattern, mask);
+ return regmap_update_bits(max8997->iodev->regmap, reg, mask, ~pattern);
}

static struct regulator_ops max8997_ldo_ops = {
@@ -1030,7 +1028,6 @@ static int max8997_pmic_probe(struct platform_device *pdev)
struct regulator_config config = { };
struct regulator_dev *rdev;
struct max8997_data *max8997;
- struct i2c_client *i2c;
int i, ret, nr_dvs;
u8 max_buck1 = 0, max_buck2 = 0, max_buck5 = 0;

@@ -1054,7 +1051,6 @@ static int max8997_pmic_probe(struct platform_device *pdev)
max8997->iodev = iodev;
max8997->num_regulators = pdata->num_regulators;
platform_set_drvdata(pdev, max8997);
- i2c = max8997->iodev->i2c;

max8997->buck125_gpioindex = pdata->buck125_default_idx;
max8997->buck1_gpiodvs = pdata->buck1_gpiodvs;
@@ -1104,25 +1100,25 @@ static int max8997_pmic_probe(struct platform_device *pdev)

/* For the safety, set max voltage before setting up */
for (i = 0; i < 8; i++) {
- max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i,
- max_buck1, 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i,
- max_buck2, 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i,
- max_buck5, 0x3f);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK1DVS1 + i, 0x3f, max_buck1);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK2DVS1 + i, 0x3f, max_buck2);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK5DVS1 + i, 0x3f, max_buck5);
}

/* Initialize all the DVS related BUCK registers */
for (i = 0; i < nr_dvs; i++) {
- max8997_update_reg(i2c, MAX8997_REG_BUCK1DVS1 + i,
- max8997->buck1_vol[i],
- 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2DVS1 + i,
- max8997->buck2_vol[i],
- 0x3f);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5DVS1 + i,
- max8997->buck5_vol[i],
- 0x3f);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK1DVS1 + i,
+ 0x3f, max8997->buck1_vol[i]);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK2DVS1 + i,
+ 0x3f, max8997->buck2_vol[i]);
+ regmap_update_bits(max8997->iodev->regmap,
+ MAX8997_REG_BUCK5DVS1 + i,
+ 0x3f, max8997->buck5_vol[i]);
}

/*
@@ -1166,16 +1162,17 @@ static int max8997_pmic_probe(struct platform_device *pdev)
}

/* DVS-GPIO disabled */
- max8997_update_reg(i2c, MAX8997_REG_BUCK1CTRL, (pdata->buck1_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
- max8997_update_reg(i2c, MAX8997_REG_BUCK2CTRL, (pdata->buck2_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
- max8997_update_reg(i2c, MAX8997_REG_BUCK5CTRL, (pdata->buck5_gpiodvs) ?
- (1 << 1) : (0 << 1), 1 << 1);
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK1CTRL,
+ 1 << 1, (pdata->buck1_gpiodvs) ? (1 << 1) : (0 << 1));
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK2CTRL,
+ 1 << 1, (pdata->buck2_gpiodvs) ? (1 << 1) : (0 << 1));
+ regmap_update_bits(max8997->iodev->regmap, MAX8997_REG_BUCK5CTRL,
+ 1 << 1, (pdata->buck5_gpiodvs) ? (1 << 1) : (0 << 1));

/* Misc Settings */
max8997->ramp_delay = 10; /* set 10mV/us, which is the default */
- max8997_write_reg(i2c, MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9);
+ regmap_write(max8997->iodev->regmap,
+ MAX8997_REG_BUCKRAMP, (0xf << 4) | 0x9);

for (i = 0; i < pdata->num_regulators; i++) {
const struct voltage_map_desc *desc;
diff --git a/drivers/rtc/rtc-max8997.c b/drivers/rtc/rtc-max8997.c
index 0777c01..b866f7d5 100644
--- a/drivers/rtc/rtc-max8997.c
+++ b/drivers/rtc/rtc-max8997.c
@@ -20,6 +20,7 @@
#include <linux/platform_device.h>
#include <linux/mfd/max8997-private.h>
#include <linux/irqdomain.h>
+#include <linux/regmap.h>

/* Module parameter for WTSR function control */
static int wtsr_en = 1;
@@ -68,7 +69,6 @@ enum {
struct max8997_rtc_info {
struct device *dev;
struct max8997_dev *max8997;
- struct i2c_client *rtc;
struct rtc_device *rtc_dev;
struct mutex lock;
int virq;
@@ -118,8 +118,8 @@ static inline int max8997_rtc_set_update_reg(struct max8997_rtc_info *info)
{
int ret;

- ret = max8997_write_reg(info->rtc, MAX8997_RTC_UPDATE1,
- RTC_UDR_MASK);
+ ret = regmap_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_UPDATE1, RTC_UDR_MASK);
if (ret < 0)
dev_err(info->dev, "%s: fail to write update reg(%d)\n",
__func__, ret);
@@ -140,7 +140,8 @@ static int max8997_rtc_read_time(struct device *dev, struct rtc_time *tm)
int ret;

mutex_lock(&info->lock);
- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_SEC, data, RTC_NR_TIME);
mutex_unlock(&info->lock);

if (ret < 0) {
@@ -166,7 +167,8 @@ static int max8997_rtc_set_time(struct device *dev, struct rtc_time *tm)

mutex_lock(&info->lock);

- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_SEC, RTC_NR_TIME, data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write time reg(%d)\n", __func__,
ret);
@@ -183,13 +185,13 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{
struct max8997_rtc_info *info = dev_get_drvdata(dev);
u8 data[RTC_NR_TIME];
- u8 val;
+ unsigned int val;
int i, ret;

mutex_lock(&info->lock);

- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read alarm reg(%d)\n",
__func__, __LINE__, ret);
@@ -207,7 +209,8 @@ static int max8997_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
}

alrm->pending = 0;
- ret = max8997_read_reg(info->max8997->i2c, MAX8997_REG_STATUS1, &val);
+ ret = regmap_read(info->max8997->regmap_rtc,
+ MAX8997_REG_STATUS1, &val);
if (ret < 0) {
dev_err(info->dev, "%s:%d fail to read status1 reg(%d)\n",
__func__, __LINE__, ret);
@@ -230,8 +233,8 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);

- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
__func__, ret);
@@ -241,8 +244,8 @@ static int max8997_rtc_stop_alarm(struct max8997_rtc_info *info)
for (i = 0; i < RTC_NR_TIME; i++)
data[i] &= ~ALARM_ENABLE_MASK;

- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -262,8 +265,8 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (!mutex_is_locked(&info->lock))
dev_warn(info->dev, "%s: should have mutex locked\n", __func__);

- ret = max8997_bulk_read(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to read alarm reg(%d)\n",
__func__, ret);
@@ -281,8 +284,8 @@ static int max8997_rtc_start_alarm(struct max8997_rtc_info *info)
if (data[RTC_DATE] & 0x1f)
data[RTC_DATE] |= (1 << ALARM_ENABLE_SHIFT);

- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -313,8 +316,8 @@ static int max8997_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
if (ret < 0)
goto out;

- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_ALARM1_SEC, RTC_NR_TIME,
- data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_ALARM1_SEC, data, RTC_NR_TIME);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write alarm reg(%d)\n",
__func__, ret);
@@ -385,7 +388,8 @@ static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s WTSR\n", __func__,
enable ? "enable" : "disable");

- ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+ ret = regmap_update_bits(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update WTSR reg(%d)\n",
__func__, ret);
@@ -398,7 +402,7 @@ static void max8997_rtc_enable_wtsr(struct max8997_rtc_info *info, bool enable)
static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
{
int ret;
- u8 val, mask;
+ unsigned int val, mask;

if (!smpl_en)
return;
@@ -413,7 +417,8 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
dev_info(info->dev, "%s: %s SMPL\n", __func__,
enable ? "enable" : "disable");

- ret = max8997_update_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, val, mask);
+ ret = regmap_update_bits(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, mask, val);
if (ret < 0) {
dev_err(info->dev, "%s: fail to update SMPL reg(%d)\n",
__func__, ret);
@@ -423,7 +428,8 @@ static void max8997_rtc_enable_smpl(struct max8997_rtc_info *info, bool enable)
max8997_rtc_set_update_reg(info);

val = 0;
- max8997_read_reg(info->rtc, MAX8997_RTC_WTSR_SMPL, &val);
+ regmap_read(info->max8997->regmap_rtc,
+ MAX8997_RTC_WTSR_SMPL, &val);
pr_info("%s: WTSR_SMPL(0x%02x)\n", __func__, val);
}

@@ -438,7 +444,8 @@ static int max8997_rtc_init_reg(struct max8997_rtc_info *info)

info->rtc_24hr_mode = 1;

- ret = max8997_bulk_write(info->rtc, MAX8997_RTC_CTRLMASK, 2, data);
+ ret = regmap_bulk_write(info->max8997->regmap_rtc,
+ MAX8997_RTC_CTRLMASK, data, 2);
if (ret < 0) {
dev_err(info->dev, "%s: fail to write controlm reg(%d)\n",
__func__, ret);
@@ -463,7 +470,6 @@ static int max8997_rtc_probe(struct platform_device *pdev)
mutex_init(&info->lock);
info->dev = &pdev->dev;
info->max8997 = max8997;
- info->rtc = max8997->rtc;

platform_set_drvdata(pdev, info);

diff --git a/include/linux/mfd/max8997-private.h b/include/linux/mfd/max8997-private.h
index 78c76cd..ea80ef8 100644
--- a/include/linux/mfd/max8997-private.h
+++ b/include/linux/mfd/max8997-private.h
@@ -309,6 +309,8 @@ enum max8997_rtc_reg {
MAX8997_RTC_ALARM2_MONTH = 0x22,
MAX8997_RTC_ALARM2_YEAR = 0x23,
MAX8997_RTC_ALARM2_DAY_OF_MONTH = 0x24,
+
+ MAX8997_RTC_REG_END = 0x25,
};

enum max8997_irq_source {
@@ -390,6 +392,11 @@ struct max8997_dev {
unsigned long type;
struct platform_device *battery; /* battery control (not fuel gauge) */

+ struct regmap *regmap;
+ struct regmap *regmap_rtc;
+ struct regmap *regmap_haptic;
+ struct regmap *regmap_muic;
+
int irq;
int ono;
struct irq_domain *irq_domain;
@@ -398,7 +405,7 @@ struct max8997_dev {
int irq_masks_cache[MAX8997_IRQ_GROUP_NR];

/* For hibernation */
- u8 reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END +
+ unsigned int reg_dump[MAX8997_REG_PMIC_END + MAX8997_MUIC_REG_END +
MAX8997_HAPTIC_REG_END];

bool gpio_status[MAX8997_NUM_GPIO];
@@ -413,14 +420,6 @@ extern int max8997_irq_init(struct max8997_dev *max8997);
extern void max8997_irq_exit(struct max8997_dev *max8997);
extern int max8997_irq_resume(struct max8997_dev *max8997);

-extern int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest);
-extern int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count,
- u8 *buf);
-extern int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value);
-extern int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count,
- u8 *buf);
-extern int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask);
-
#define MAX8997_GPIO_INT_BOTH (0x3 << 4)
#define MAX8997_GPIO_INT_RISE (0x2 << 4)
#define MAX8997_GPIO_INT_FALL (0x1 << 4)
--
1.9.1