Hi Krzysztof,

On 05/29/2014 05:51 PM, Krzysztof Kozlowski wrote:
> Hi Chanwoo,
> 
> Few ideas below:
> 
> 
> On śro, 2014-05-28 at 20:10 +0900, Chanwoo Choi wrote:
>> This patch add S2MPU02 regulator device to existing S2MPS11 device driver
>> because of existing a litthe different between S2MPS1x and S2MPU02. The 
>> S2MPU02
> 
> Fix a typo and language:
> "because of little differences between S2MPS1x and S2MPU02"

OK, I'll fix it.

> 
> 
>> regulator device includes LDO[1-28] and BUCK[1-7].
>>
>> Signed-off-by: Chanwoo Choi <cw00.c...@samsung.com>
>>
>> ---
>> drivers/mfd/sec-core.c              |  26 +++
>>  drivers/regulator/s2mps11.c         | 310 
>> ++++++++++++++++++++++++++++++++++--
>>  include/linux/mfd/samsung/s2mpu02.h | 201 +++++++++++++++++++++++
>>  3 files changed, 521 insertions(+), 16 deletions(-)
>>  create mode 100644 include/linux/mfd/samsung/s2mpu02.h
>>
> 
> (...)
> 
>> diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
>> index 02e2fb2..064d44b 100644
>> --- a/drivers/regulator/s2mps11.c
>> +++ b/drivers/regulator/s2mps11.c
>> @@ -31,6 +31,7 @@
>>  #include <linux/mfd/samsung/core.h>
>>  #include <linux/mfd/samsung/s2mps11.h>
>>  #include <linux/mfd/samsung/s2mps14.h>
>> +#include <linux/mfd/samsung/s2mpu02.h>
>>  
>>  struct s2mps11_info {
>>      unsigned int rdev_num;
>> @@ -40,11 +41,16 @@ struct s2mps11_info {
>>      int ramp_delay16;
>>      int ramp_delay7810;
>>      int ramp_delay9;
>> +
>> +    enum sec_device_type dev_type;
>> +
>>      /*
>> -     * One bit for each S2MPS14 regulator whether the suspend mode
>> +     * One bit for each S2MPS14/S2MPU02 regulator whether the suspend mode
>>       * was enabled.
>>       */
>>      unsigned int s2mps14_suspend_state:30;
>> +    unsigned long long s2mpu02_suspend_state:35;
>> +
> 
> Why do not re-use the already present 's2mps14_suspend_state' field?
> Change it to 'unsigned long long:35' and use it for both s2mps14 and
> s2mpu02 suspend states?

OK, I'll fix it.

> 
> 
>>      /* Array of size rdev_num with GPIO-s for external sleep control */
>>      int *ext_control_gpio;
>>  };
>> @@ -415,12 +421,24 @@ static int s2mps14_regulator_enable(struct 
>> regulator_dev *rdev)
>>      struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
>>      unsigned int val;
>>  
>> -    if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
>> -            val = S2MPS14_ENABLE_SUSPEND;
>> -    else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
>> -            val = S2MPS14_ENABLE_EXT_CONTROL;
>> -    else
>> -            val = rdev->desc->enable_mask;
>> +    switch (s2mps11->dev_type) {
>> +    case S2MPS14X:
>> +            if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
>> +                    val = S2MPS14_ENABLE_SUSPEND;
>> +            else if 
>> (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
>> +                    val = S2MPS14_ENABLE_EXT_CONTROL;
>> +            else
>> +                    val = rdev->desc->enable_mask;
>> +            break;
>> +    case S2MPU02:
>> +            if (s2mps11->s2mpu02_suspend_state & (1 << rdev_get_id(rdev)))
>> +                    val = S2MPU02_ENABLE_SUSPEND;
>> +            else
>> +                    val = rdev->desc->enable_mask;
>> +            break;
>> +    default:
>> +            return -EINVAL;
>> +    };
>>  
>>      return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
>>                      rdev->desc->enable_mask, val);
>> @@ -431,16 +449,44 @@ static int 
>> s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
>>      int ret;
>>      unsigned int val;
>>      struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
>> +    int rdev_id = rdev_get_id(rdev);
>>  
>> -    /* LDO3 should be always on and does not support suspend mode */
>> -    if (rdev_get_id(rdev) == S2MPS14_LDO3)
>> -            return 0;
>> +    /* Below LDO should be always on or does not support suspend mode. */
>> +    switch (s2mps11->dev_type) {
>> +    case S2MPS14X:
>> +            switch (rdev_id) {
>> +            case S2MPS14_LDO3:
>> +                    return 0;
>> +            };
>> +    case S2MPU02:
>> +            switch (rdev_id) {
>> +            case S2MPU02_LDO13:
>> +            case S2MPU02_LDO14:
>> +            case S2MPU02_LDO15:
>> +            case S2MPU02_LDO16:
>> +            case S2MPU02_LDO17:
>> +            case S2MPU02_BUCK7:
>> +                    return 0;
>> +            };
>> +    default:
>> +            return -EINVAL;
>> +    };
>>  
>>      ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
>>      if (ret < 0)
>>              return ret;
>>  
>> -    s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
>> +    switch (s2mps11->dev_type) {
>> +    case S2MPS14X:
>> +            s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
>> +            break;
>> +    case S2MPU02:
>> +            s2mps11->s2mpu02_suspend_state |= (1 << rdev_get_id(rdev));
>> +            break;
>> +    default:
>> +            return -EINVAL;
>> +    };
>> +
>>      /*
>>       * Don't enable suspend mode if regulator is already disabled because
>>       * this would effectively for a short time turn on the regulator after
>> @@ -625,6 +671,233 @@ static int s2mps11_pmic_dt_parse(struct 
>> platform_device *pdev,
>>      return 0;
>>  }
>>  
>> +static int s2mpu02_set_ramp_delay(struct regulator_dev *rdev, int 
>> ramp_delay)
>> +{
>> +    unsigned int ramp_val, ramp_shift, ramp_reg;
>> +
>> +    switch (rdev_get_id(rdev)) {
>> +    case S2MPU02_BUCK1:
>> +            ramp_shift = S2MPU02_BUCK1_RAMP_SHIFT;
>> +            break;
>> +    case S2MPU02_BUCK2:
>> +            ramp_shift = S2MPU02_BUCK2_RAMP_SHIFT;
>> +            break;
>> +    case S2MPU02_BUCK3:
>> +            ramp_shift = S2MPU02_BUCK3_RAMP_SHIFT;
>> +            break;
>> +    case S2MPU02_BUCK4:
>> +            ramp_shift = S2MPU02_BUCK4_RAMP_SHIFT;
>> +            break;
>> +    default:
>> +            return 0;
>> +    }
>> +    ramp_reg = S2MPU02_REG_RAMP1;
>> +    ramp_val = get_ramp_delay(ramp_delay);
>> +
>> +    return regmap_update_bits(rdev->regmap, ramp_reg,
>> +                              S2MPU02_BUCK1234_RAMP_MASK << ramp_shift,
>> +                              ramp_val << ramp_shift);
>> +}
>> +
>> +static struct regulator_ops s2mpu02_ldo_ops = {
>> +    .list_voltage           = regulator_list_voltage_linear,
>> +    .map_voltage            = regulator_map_voltage_linear,
>> +    .is_enabled             = regulator_is_enabled_regmap,
>> +    .enable                 = s2mps14_regulator_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    = s2mps14_regulator_set_suspend_disable,
>> +};
>> +
>> +static struct regulator_ops s2mpu02_buck_ops = {
>> +    .list_voltage           = regulator_list_voltage_linear,
>> +    .map_voltage            = regulator_map_voltage_linear,
>> +    .is_enabled             = regulator_is_enabled_regmap,
>> +    .enable                 = s2mps14_regulator_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    = s2mps14_regulator_set_suspend_disable,
>> +    .set_ramp_delay         = s2mpu02_set_ramp_delay,
>> +};
>> +
>> +#define regulator_desc_s2mpu02_ldo1(num) {          \
>> +    .name           = "LDO"#num,                    \
>> +    .id             = S2MPU02_LDO##num,             \
>> +    .ops            = &s2mpu02_ldo_ops,             \
>> +    .type           = REGULATOR_VOLTAGE,            \
>> +    .owner          = THIS_MODULE,                  \
>> +    .min_uV         = S2MPU02_LDO_MIN_900MV,        \
>> +    .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
>> +    .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
>> +    .vsel_reg       = S2MPU02_REG_L1CTRL,           \
>> +    .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
>> +    .enable_reg     = S2MPU02_REG_L1CTRL,           \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK           \
>> +}
>> +#define regulator_desc_s2mpu02_ldo2(num) {          \
>> +    .name           = "LDO"#num,                    \
>> +    .id             = S2MPU02_LDO##num,             \
>> +    .ops            = &s2mpu02_ldo_ops,             \
>> +    .type           = REGULATOR_VOLTAGE,            \
>> +    .owner          = THIS_MODULE,                  \
>> +    .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
>> +    .uV_step        = S2MPU02_LDO_STEP_25MV,        \
>> +    .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
>> +    .vsel_reg       = S2MPU02_REG_L2CTRL1,          \
>> +    .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
>> +    .enable_reg     = S2MPU02_REG_L2CTRL1,          \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK           \
>> +}
>> +#define regulator_desc_s2mpu02_ldo3(num) {          \
>> +    .name           = "LDO"#num,                    \
>> +    .id             = S2MPU02_LDO##num,             \
>> +    .ops            = &s2mpu02_ldo_ops,             \
>> +    .type           = REGULATOR_VOLTAGE,            \
>> +    .owner          = THIS_MODULE,                  \
>> +    .min_uV         = S2MPU02_LDO_MIN_900MV,        \
>> +    .uV_step        = S2MPU02_LDO_STEP_12_5MV,      \
>> +    .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
>> +    .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
>> +    .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK           \
>> +}
>> +#define regulator_desc_s2mpu02_ldo4(num) {          \
>> +    .name           = "LDO"#num,                    \
>> +    .id             = S2MPU02_LDO##num,             \
>> +    .ops            = &s2mpu02_ldo_ops,             \
>> +    .type           = REGULATOR_VOLTAGE,            \
>> +    .owner          = THIS_MODULE,                  \
>> +    .min_uV         = S2MPU02_LDO_MIN_1050MV,       \
>> +    .uV_step        = S2MPU02_LDO_STEP_25MV,        \
>> +    .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
>> +    .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
>> +    .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK           \
>> +}
>> +#define regulator_desc_s2mpu02_ldo5(num) {          \
>> +    .name           = "LDO"#num,                    \
>> +    .id             = S2MPU02_LDO##num,             \
>> +    .ops            = &s2mpu02_ldo_ops,             \
>> +    .type           = REGULATOR_VOLTAGE,            \
>> +    .owner          = THIS_MODULE,                  \
>> +    .min_uV         = S2MPU02_LDO_MIN_1600MV,       \
>> +    .uV_step        = S2MPU02_LDO_STEP_50MV,        \
>> +    .n_voltages     = S2MPU02_LDO_N_VOLTAGES,       \
>> +    .vsel_reg       = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .vsel_mask      = S2MPU02_LDO_VSEL_MASK,        \
>> +    .enable_reg     = S2MPU02_REG_L3CTRL + num - 3, \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK           \
>> +}
>> +
>> +#define regulator_desc_s2mpu02_buck1234(num) {                      \
>> +    .name           = "BUCK"#num,                           \
>> +    .id             = S2MPU02_BUCK##num,                    \
>> +    .ops            = &s2mpu02_buck_ops,                    \
>> +    .type           = REGULATOR_VOLTAGE,                    \
>> +    .owner          = THIS_MODULE,                          \
>> +    .min_uV         = S2MPU02_BUCK1234_MIN_600MV,           \
>> +    .uV_step        = S2MPU02_BUCK1234_STEP_6_25MV,         \
>> +    .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
>> +    .linear_min_sel = S2MPU02_BUCK1234_START_SEL,           \
>> +    .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
>> +    .vsel_reg       = S2MPU02_REG_B1CTRL2 + (num - 1) * 2,  \
>> +    .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
>> +    .enable_reg     = S2MPU02_REG_B1CTRL1 + (num - 1) * 2,  \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK                   \
>> +}
>> +#define regulator_desc_s2mpu02_buck5(num) {                 \
>> +    .name           = "BUCK"#num,                           \
>> +    .id             = S2MPU02_BUCK##num,                    \
>> +    .ops            = &s2mpu02_ldo_ops,                     \
>> +    .type           = REGULATOR_VOLTAGE,                    \
>> +    .owner          = THIS_MODULE,                          \
>> +    .min_uV         = S2MPU02_BUCK5_MIN_1081_25MV,          \
>> +    .uV_step        = S2MPU02_BUCK5_STEP_6_25MV,            \
>> +    .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
>> +    .linear_min_sel = S2MPU02_BUCK5_START_SEL,              \
>> +    .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
>> +    .vsel_reg       = S2MPU02_REG_B5CTRL2,                  \
>> +    .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
>> +    .enable_reg     = S2MPU02_REG_B5CTRL1,                  \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK                   \
>> +}
>> +#define regulator_desc_s2mpu02_buck6(num) {                 \
>> +    .name           = "BUCK"#num,                           \
>> +    .id             = S2MPU02_BUCK##num,                    \
>> +    .ops            = &s2mpu02_ldo_ops,                     \
>> +    .type           = REGULATOR_VOLTAGE,                    \
>> +    .owner          = THIS_MODULE,                          \
>> +    .min_uV         = S2MPU02_BUCK6_MIN_1700MV,             \
>> +    .uV_step        = S2MPU02_BUCK6_STEP_2_50MV,            \
>> +    .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
>> +    .linear_min_sel = S2MPU02_BUCK6_START_SEL,              \
>> +    .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
>> +    .vsel_reg       = S2MPU02_REG_B6CTRL2,                  \
>> +    .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
>> +    .enable_reg     = S2MPU02_REG_B6CTRL1,                  \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK                   \
>> +}
>> +#define regulator_desc_s2mpu02_buck7(num) {                 \
>> +    .name           = "BUCK"#num,                           \
>> +    .id             = S2MPU02_BUCK##num,                    \
>> +    .ops            = &s2mpu02_ldo_ops,                     \
>> +    .type           = REGULATOR_VOLTAGE,                    \
>> +    .owner          = THIS_MODULE,                          \
>> +    .min_uV         = S2MPU02_BUCK7_MIN_900MV,              \
>> +    .uV_step        = S2MPU02_BUCK7_STEP_6_25MV,            \
>> +    .n_voltages     = S2MPU02_BUCK_N_VOLTAGES,              \
>> +    .linear_min_sel = S2MPU02_BUCK7_START_SEL,              \
>> +    .ramp_delay     = S2MPU02_BUCK_RAMP_DELAY,              \
>> +    .vsel_reg       = S2MPU02_REG_B7CTRL2,                  \
>> +    .vsel_mask      = S2MPU02_BUCK_VSEL_MASK,               \
>> +    .enable_reg     = S2MPU02_REG_B7CTRL1,                  \
>> +    .enable_mask    = S2MPU02_ENABLE_MASK                   \
>> +}
>> +
>> +static const struct regulator_desc s2mpu02_regulators[] = {
>> +    regulator_desc_s2mpu02_ldo1(1),
>> +    regulator_desc_s2mpu02_ldo2(2),
>> +    regulator_desc_s2mpu02_ldo4(3),
>> +    regulator_desc_s2mpu02_ldo5(4),
>> +    regulator_desc_s2mpu02_ldo4(5),
>> +    regulator_desc_s2mpu02_ldo3(6),
>> +    regulator_desc_s2mpu02_ldo3(7),
>> +    regulator_desc_s2mpu02_ldo4(8),
>> +    regulator_desc_s2mpu02_ldo5(9),
>> +    regulator_desc_s2mpu02_ldo3(10),
>> +    regulator_desc_s2mpu02_ldo4(11),
>> +    regulator_desc_s2mpu02_ldo5(12),
>> +    regulator_desc_s2mpu02_ldo5(13),
>> +    regulator_desc_s2mpu02_ldo5(14),
>> +    regulator_desc_s2mpu02_ldo5(15),
>> +    regulator_desc_s2mpu02_ldo5(16),
>> +    regulator_desc_s2mpu02_ldo4(17),
>> +    regulator_desc_s2mpu02_ldo5(18),
>> +    regulator_desc_s2mpu02_ldo3(19),
>> +    regulator_desc_s2mpu02_ldo4(20),
>> +    regulator_desc_s2mpu02_ldo5(21),
>> +    regulator_desc_s2mpu02_ldo5(22),
>> +    regulator_desc_s2mpu02_ldo5(23),
>> +    regulator_desc_s2mpu02_ldo4(24),
>> +    regulator_desc_s2mpu02_ldo5(25),
>> +    regulator_desc_s2mpu02_ldo4(26),
>> +    regulator_desc_s2mpu02_ldo5(27),
>> +    regulator_desc_s2mpu02_ldo5(28),
>> +    regulator_desc_s2mpu02_buck1234(1),
>> +    regulator_desc_s2mpu02_buck1234(2),
>> +    regulator_desc_s2mpu02_buck1234(3),
>> +    regulator_desc_s2mpu02_buck1234(4),
>> +    regulator_desc_s2mpu02_buck5(5),
>> +    regulator_desc_s2mpu02_buck6(6),
>> +    regulator_desc_s2mpu02_buck7(7),
>> +};
>> +
>>  static int s2mps11_pmic_probe(struct platform_device *pdev)
>>  {
>>      struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
>> @@ -634,15 +907,14 @@ static int s2mps11_pmic_probe(struct platform_device 
>> *pdev)
>>      struct s2mps11_info *s2mps11;
>>      int i, ret = 0;
>>      const struct regulator_desc *regulators;
>> -    enum sec_device_type dev_type;
>>  
>>      s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
>>                              GFP_KERNEL);
>>      if (!s2mps11)
>>              return -ENOMEM;
>>  
>> -    dev_type = platform_get_device_id(pdev)->driver_data;
>> -    switch (dev_type) {
>> +    s2mps11->dev_type = platform_get_device_id(pdev)->driver_data;
>> +    switch (s2mps11->dev_type) {
>>      case S2MPS11X:
>>              s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
>>              regulators = s2mps11_regulators;
>> @@ -651,8 +923,13 @@ static int s2mps11_pmic_probe(struct platform_device 
>> *pdev)
>>              s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
>>              regulators = s2mps14_regulators;
>>              break;
>> +    case S2MPU02:
>> +            s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
>> +            regulators = s2mpu02_regulators;
>> +            break;
>>      default:
>> -            dev_err(&pdev->dev, "Invalid device type: %u\n", dev_type);
>> +            dev_err(&pdev->dev, "Invalid device type: %u\n",
>> +                                s2mps11->dev_type);
>>              return -EINVAL;
>>      };
>>  
>> @@ -686,7 +963,7 @@ static int s2mps11_pmic_probe(struct platform_device 
>> *pdev)
>>      for (i = 0; i < s2mps11->rdev_num; i++)
>>              rdata[i].name = regulators[i].name;
>>  
>> -    ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, dev_type);
>> +    ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, s2mps11->dev_type);
> 
> I think you can get rid of last parameter of s2mps11_pmic_dt_parse().
> The function already received a pointer to 'struct s2mps11_info' and it
> will be called after setting 's2mps11->dev_type' so the last parameter
> is not needed.

You're right. I'll fix it.

> 
>>      if (ret)
>>              goto out;
>>  
>> @@ -739,6 +1016,7 @@ out:
>>  static const struct platform_device_id s2mps11_pmic_id[] = {
>>      { "s2mps11-pmic", S2MPS11X},
>>      { "s2mps14-pmic", S2MPS14X},
>> +    { "s2mpu02-pmic", S2MPU02},
>>      { },
>>  };
>>  MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
>> diff --git a/include/linux/mfd/samsung/s2mpu02.h 
>> b/include/linux/mfd/samsung/s2mpu02.h
>> new file mode 100644
>> index 0000000..98406f4
>> --- /dev/null
>> +++ b/include/linux/mfd/samsung/s2mpu02.h
>> @@ -0,0 +1,201 @@
>> +/*
>> + * s2mpu02.h
>> + *
>> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
>> + *              http://www.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.
>> + *
>> + */
>> +
>> +#ifndef __LINUX_MFD_S2MPU02_H
>> +#define __LINUX_MFD_S2MPU02_H
>> +
>> +/* S2MPU02 registers */
>> +enum S2MPU02_reg {
>> +    S2MPU02_REG_ID,
>> +    S2MPU02_REG_INT1,
>> +    S2MPU02_REG_INT2,
>> +    S2MPU02_REG_INT3,
>> +    S2MPU02_REG_INT1M,
>> +    S2MPU02_REG_INT2M,
>> +    S2MPU02_REG_INT3M,
>> +    S2MPU02_REG_ST1,
>> +    S2MPU02_REG_ST2,
>> +    S2MPU02_REG_PWRONSRC,
>> +    S2MPU02_REG_OFFSRC,
>> +    S2MPU02_REG_BU_CHG,
>> +    S2MPU02_REG_RTCCTRL,
>> +    S2MPU02_REG_PMCTRL1,
>> +    S2MPU02_REG_RSVD1,
>> +    S2MPU02_REG_RSVD2,
>> +    S2MPU02_REG_RSVD3,
>> +    S2MPU02_REG_RSVD4,
>> +    S2MPU02_REG_RSVD5,
>> +    S2MPU02_REG_RSVD6,
>> +    S2MPU02_REG_RSVD7,
>> +    S2MPU02_REG_WRSTEN,
>> +    S2MPU02_REG_RSVD8,
>> +    S2MPU02_REG_RSVD9,
>> +    S2MPU02_REG_RSVD10,
>> +    S2MPU02_REG_B1CTRL1,
>> +    S2MPU02_REG_B1CTRL2,
>> +    S2MPU02_REG_B2CTRL1,
>> +    S2MPU02_REG_B2CTRL2,
>> +    S2MPU02_REG_B3CTRL1,
>> +    S2MPU02_REG_B3CTRL2,
>> +    S2MPU02_REG_B4CTRL1,
>> +    S2MPU02_REG_B4CTRL2,
>> +    S2MPU02_REG_B5CTRL1,
>> +    S2MPU02_REG_B5CTRL2,
>> +    S2MPU02_REG_B5CTRL3,
>> +    S2MPU02_REG_B5CTRL4,
>> +    S2MPU02_REG_B5CTRL5,
>> +    S2MPU02_REG_B6CTRL1,
>> +    S2MPU02_REG_B6CTRL2,
>> +    S2MPU02_REG_B7CTRL1,
>> +    S2MPU02_REG_B7CTRL2,
>> +    S2MPU02_REG_RAMP1,
>> +    S2MPU02_REG_RAMP2,
>> +    S2MPU02_REG_L1CTRL,
>> +    S2MPU02_REG_L2CTRL1,
>> +    S2MPU02_REG_L2CTRL2,
>> +    S2MPU02_REG_L2CTRL3,
>> +    S2MPU02_REG_L2CTRL4,
>> +    S2MPU02_REG_L3CTRL,
>> +    S2MPU02_REG_L4CTRL,
>> +    S2MPU02_REG_L5CTRL,
>> +    S2MPU02_REG_L6CTRL,
>> +    S2MPU02_REG_L7CTRL,
>> +    S2MPU02_REG_L8CTRL,
>> +    S2MPU02_REG_L9CTRL,
>> +    S2MPU02_REG_L10CTRL,
>> +    S2MPU02_REG_L11CTRL,
>> +    S2MPU02_REG_L12CTRL,
>> +    S2MPU02_REG_L13CTRL,
>> +    S2MPU02_REG_L14CTRL,
>> +    S2MPU02_REG_L15CTRL,
>> +    S2MPU02_REG_L16CTRL,
>> +    S2MPU02_REG_L17CTRL,
>> +    S2MPU02_REG_L18CTRL,
>> +    S2MPU02_REG_L19CTRL,
>> +    S2MPU02_REG_L20CTRL,
>> +    S2MPU02_REG_L21CTRL,
>> +    S2MPU02_REG_L22CTRL,
>> +    S2MPU02_REG_L23CTRL,
>> +    S2MPU02_REG_L24CTRL,
>> +    S2MPU02_REG_L25CTRL,
>> +    S2MPU02_REG_L26CTRL,
>> +    S2MPU02_REG_L27CTRL,
>> +    S2MPU02_REG_L28CTRL,
>> +    S2MPU02_REG_LDODSCH1,
>> +    S2MPU02_REG_LDODSCH2,
>> +    S2MPU02_REG_LDODSCH3,
>> +    S2MPU02_REG_LDODSCH4,
>> +    S2MPU02_REG_SELMIF,
>> +    S2MPU02_REG_RSVD11,
>> +    S2MPU02_REG_RSVD12,
>> +    S2MPU02_REG_RSVD13,
>> +    S2MPU02_REG_DVSSEL,
>> +    S2MPU02_REG_DVSPTR,
>> +    S2MPU02_REG_DVSDATA,
>> +};
>> +
>> +/* S2MPU02 regulator ids */
>> +enum S2MPU02_regulators {
>> +    S2MPU02_LDO1,
>> +    S2MPU02_LDO2,
>> +    S2MPU02_LDO3,
>> +    S2MPU02_LDO4,
>> +    S2MPU02_LDO5,
>> +    S2MPU02_LDO6,
>> +    S2MPU02_LDO7,
>> +    S2MPU02_LDO8,
>> +    S2MPU02_LDO9,
>> +    S2MPU02_LDO10,
>> +    S2MPU02_LDO11,
>> +    S2MPU02_LDO12,
>> +    S2MPU02_LDO13,
>> +    S2MPU02_LDO14,
>> +    S2MPU02_LDO15,
>> +    S2MPU02_LDO16,
>> +    S2MPU02_LDO17,
>> +    S2MPU02_LDO18,
>> +    S2MPU02_LDO19,
>> +    S2MPU02_LDO20,
>> +    S2MPU02_LDO21,
>> +    S2MPU02_LDO22,
>> +    S2MPU02_LDO23,
>> +    S2MPU02_LDO24,
>> +    S2MPU02_LDO25,
>> +    S2MPU02_LDO26,
>> +    S2MPU02_LDO27,
>> +    S2MPU02_LDO28,
>> +    S2MPU02_BUCK1,
>> +    S2MPU02_BUCK2,
>> +    S2MPU02_BUCK3,
>> +    S2MPU02_BUCK4,
>> +    S2MPU02_BUCK5,
>> +    S2MPU02_BUCK6,
>> +    S2MPU02_BUCK7,
>> +
>> +    S2MPU02_REGULATOR_MAX,
>> +};
>> +
>> +/* Regulator constraints for BUCKx */
>> +#define S2MPU02_BUCK1234_MIN_600MV  600000
>> +#define S2MPU02_BUCK5_MIN_1081_25MV 1081250
>> +#define S2MPU02_BUCK6_MIN_1700MV    1700000
>> +#define S2MPU02_BUCK7_MIN_900MV             900000
>> +
>> +#define S2MPU02_BUCK1234_STEP_6_25MV        6250
>> +#define S2MPU02_BUCK5_STEP_6_25MV   6250
>> +#define S2MPU02_BUCK6_STEP_2_50MV   2500
>> +#define S2MPU02_BUCK7_STEP_6_25MV   6250
>> +
>> +#define S2MPU02_BUCK1234_START_SEL  0x00
>> +#define S2MPU02_BUCK5_START_SEL             0x4D
>> +#define S2MPU02_BUCK6_START_SEL             0x28
>> +#define S2MPU02_BUCK7_START_SEL             0x30
>> +
>> +/*
>> + * Default ramp delay in uv/us. Datasheet says that ramp delay can be
>> + * controlled however it does not specify which register is used for that.
>> + * Let's assume that default value will be set.
>> + */
> 
> The comment above applies only to S2MPS14 which does not describe the
> register for setting ramp delay. On S2MPU02 the ramp delay can be set so
> this comment is misleading.

OK. I'll remove this comment.

Thanks for your comment.

Best Regards,
Chanwoo Choi
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