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Date:	Thu, 10 Jul 2014 08:55:00 +0530
From:	amit daniel kachhap <amit.daniel@...sung.com>
To:	Sangbeom Kim <sbkim73@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Lee Jones <lee.jones@...aro.org>
Cc:	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] regulator: s2mps11: Optimize the regulator
 description macro

Adding MFD maintainers

On Tue, Jul 8, 2014 at 5:58 PM, Amit Daniel Kachhap
<amit.daniel@...sung.com> wrote:
> This patch makes the regulator description macro take minimum and
> steps voltage as parameter. In this way many repeated macros can be
> removed. Now these macros are repeated only if the the LDO/BUCK ctrl
> registers have non-linear positions. The good thing is these ctrl registers
> are mostly linear so they are not passed as parameters.
>
> This patch reduces the code size and also allow easy addition of more
> s2mpxxx PMIC drivers which differs a lot in minimum/step voltages.
>
> Signed-off-by: Amit Daniel Kachhap <amit.daniel@...sung.com>
> ---
>  drivers/regulator/s2mps11.c | 261 +++++++++++++++-----------------------------
>  1 file changed, 86 insertions(+), 175 deletions(-)
>
> diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
> index 2098c3e..ea94f47 100644
> --- a/drivers/regulator/s2mps11.c
> +++ b/drivers/regulator/s2mps11.c
> @@ -250,28 +250,14 @@ static struct regulator_ops s2mps11_buck_ops = {
>         .set_ramp_delay         = s2mps11_set_ramp_delay,
>  };
>
> -#define regulator_desc_s2mps11_ldo1(num)       {       \
> +#define regulator_desc_s2mps11_ldo(num, min, step) {   \
>         .name           = "LDO"#num,                    \
>         .id             = S2MPS11_LDO##num,             \
>         .ops            = &s2mps11_ldo_ops,             \
>         .type           = REGULATOR_VOLTAGE,            \
>         .owner          = THIS_MODULE,                  \
> -       .min_uV         = MIN_800_MV,                   \
> -       .uV_step        = STEP_50_MV,                   \
> -       .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
> -       .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
> -       .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
> -       .enable_reg     = S2MPS11_REG_L1CTRL + num - 1, \
> -       .enable_mask    = S2MPS11_ENABLE_MASK           \
> -}
> -#define regulator_desc_s2mps11_ldo2(num) {             \
> -       .name           = "LDO"#num,                    \
> -       .id             = S2MPS11_LDO##num,             \
> -       .ops            = &s2mps11_ldo_ops,             \
> -       .type           = REGULATOR_VOLTAGE,            \
> -       .owner          = THIS_MODULE,                  \
> -       .min_uV         = MIN_800_MV,                   \
> -       .uV_step        = STEP_25_MV,                   \
> +       .min_uV         = min,                          \
> +       .uV_step        = step,                         \
>         .n_voltages     = S2MPS11_LDO_N_VOLTAGES,       \
>         .vsel_reg       = S2MPS11_REG_L1CTRL + num - 1, \
>         .vsel_mask      = S2MPS11_LDO_VSEL_MASK,        \
> @@ -311,14 +297,14 @@ static struct regulator_ops s2mps11_buck_ops = {
>         .enable_mask    = S2MPS11_ENABLE_MASK                   \
>  }
>
> -#define regulator_desc_s2mps11_buck6_8(num) {                  \
> +#define regulator_desc_s2mps11_buck6_10(num, min, step) {      \
>         .name           = "BUCK"#num,                           \
>         .id             = S2MPS11_BUCK##num,                    \
>         .ops            = &s2mps11_buck_ops,                    \
>         .type           = REGULATOR_VOLTAGE,                    \
>         .owner          = THIS_MODULE,                          \
> -       .min_uV         = MIN_600_MV,                           \
> -       .uV_step        = STEP_6_25_MV,                         \
> +       .min_uV         = min,                                  \
> +       .uV_step        = step,                                 \
>         .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
>         .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
>         .vsel_reg       = S2MPS11_REG_B6CTRL2 + (num - 6) * 2,  \
> @@ -327,87 +313,55 @@ static struct regulator_ops s2mps11_buck_ops = {
>         .enable_mask    = S2MPS11_ENABLE_MASK                   \
>  }
>
> -#define regulator_desc_s2mps11_buck9 {                         \
> -       .name           = "BUCK9",                              \
> -       .id             = S2MPS11_BUCK9,                        \
> -       .ops            = &s2mps11_buck_ops,                    \
> -       .type           = REGULATOR_VOLTAGE,                    \
> -       .owner          = THIS_MODULE,                          \
> -       .min_uV         = MIN_3000_MV,                          \
> -       .uV_step        = STEP_25_MV,                           \
> -       .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
> -       .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
> -       .vsel_reg       = S2MPS11_REG_B9CTRL2,                  \
> -       .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
> -       .enable_reg     = S2MPS11_REG_B9CTRL1,                  \
> -       .enable_mask    = S2MPS11_ENABLE_MASK                   \
> -}
> -
> -#define regulator_desc_s2mps11_buck10 {                                \
> -       .name           = "BUCK10",                             \
> -       .id             = S2MPS11_BUCK10,                       \
> -       .ops            = &s2mps11_buck_ops,                    \
> -       .type           = REGULATOR_VOLTAGE,                    \
> -       .owner          = THIS_MODULE,                          \
> -       .min_uV         = MIN_750_MV,                           \
> -       .uV_step        = STEP_12_5_MV,                         \
> -       .n_voltages     = S2MPS11_BUCK_N_VOLTAGES,              \
> -       .ramp_delay     = S2MPS11_RAMP_DELAY,                   \
> -       .vsel_reg       = S2MPS11_REG_B10CTRL2,                 \
> -       .vsel_mask      = S2MPS11_BUCK_VSEL_MASK,               \
> -       .enable_reg     = S2MPS11_REG_B10CTRL1,                 \
> -       .enable_mask    = S2MPS11_ENABLE_MASK                   \
> -}
> -
>  static const struct regulator_desc s2mps11_regulators[] = {
> -       regulator_desc_s2mps11_ldo2(1),
> -       regulator_desc_s2mps11_ldo1(2),
> -       regulator_desc_s2mps11_ldo1(3),
> -       regulator_desc_s2mps11_ldo1(4),
> -       regulator_desc_s2mps11_ldo1(5),
> -       regulator_desc_s2mps11_ldo2(6),
> -       regulator_desc_s2mps11_ldo1(7),
> -       regulator_desc_s2mps11_ldo1(8),
> -       regulator_desc_s2mps11_ldo1(9),
> -       regulator_desc_s2mps11_ldo1(10),
> -       regulator_desc_s2mps11_ldo2(11),
> -       regulator_desc_s2mps11_ldo1(12),
> -       regulator_desc_s2mps11_ldo1(13),
> -       regulator_desc_s2mps11_ldo1(14),
> -       regulator_desc_s2mps11_ldo1(15),
> -       regulator_desc_s2mps11_ldo1(16),
> -       regulator_desc_s2mps11_ldo1(17),
> -       regulator_desc_s2mps11_ldo1(18),
> -       regulator_desc_s2mps11_ldo1(19),
> -       regulator_desc_s2mps11_ldo1(20),
> -       regulator_desc_s2mps11_ldo1(21),
> -       regulator_desc_s2mps11_ldo2(22),
> -       regulator_desc_s2mps11_ldo2(23),
> -       regulator_desc_s2mps11_ldo1(24),
> -       regulator_desc_s2mps11_ldo1(25),
> -       regulator_desc_s2mps11_ldo1(26),
> -       regulator_desc_s2mps11_ldo2(27),
> -       regulator_desc_s2mps11_ldo1(28),
> -       regulator_desc_s2mps11_ldo1(29),
> -       regulator_desc_s2mps11_ldo1(30),
> -       regulator_desc_s2mps11_ldo1(31),
> -       regulator_desc_s2mps11_ldo1(32),
> -       regulator_desc_s2mps11_ldo1(33),
> -       regulator_desc_s2mps11_ldo1(34),
> -       regulator_desc_s2mps11_ldo1(35),
> -       regulator_desc_s2mps11_ldo1(36),
> -       regulator_desc_s2mps11_ldo1(37),
> -       regulator_desc_s2mps11_ldo1(38),
> +       regulator_desc_s2mps11_ldo(1, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(2, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(3, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(4, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(5, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(6, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(7, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(8, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(9, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(10, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(11, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(12, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(13, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(14, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(15, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(16, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(17, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(18, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(19, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(20, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(21, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(22, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(23, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(24, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(25, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(26, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(27, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_ldo(28, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(29, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(30, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(31, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(32, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(33, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(34, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(35, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(36, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(37, MIN_800_MV, STEP_50_MV),
> +       regulator_desc_s2mps11_ldo(38, MIN_800_MV, STEP_50_MV),
>         regulator_desc_s2mps11_buck1_4(1),
>         regulator_desc_s2mps11_buck1_4(2),
>         regulator_desc_s2mps11_buck1_4(3),
>         regulator_desc_s2mps11_buck1_4(4),
>         regulator_desc_s2mps11_buck5,
> -       regulator_desc_s2mps11_buck6_8(6),
> -       regulator_desc_s2mps11_buck6_8(7),
> -       regulator_desc_s2mps11_buck6_8(8),
> -       regulator_desc_s2mps11_buck9,
> -       regulator_desc_s2mps11_buck10,
> +       regulator_desc_s2mps11_buck6_10(6, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps11_buck6_10(7, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps11_buck6_10(8, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps11_buck6_10(9, MIN_3000_MV, STEP_25_MV),
> +       regulator_desc_s2mps11_buck6_10(10, MIN_750_MV, STEP_12_5_MV),
>  };
>
>  static int s2mps14_regulator_enable(struct regulator_dev *rdev)
> @@ -467,56 +421,29 @@ static struct regulator_ops s2mps14_reg_ops = {
>         .set_suspend_disable    = s2mps14_regulator_set_suspend_disable,
>  };
>
> -#define regulator_desc_s2mps14_ldo1(num) {             \
> -       .name           = "LDO"#num,                    \
> -       .id             = S2MPS14_LDO##num,             \
> -       .ops            = &s2mps14_reg_ops,             \
> -       .type           = REGULATOR_VOLTAGE,            \
> -       .owner          = THIS_MODULE,                  \
> -       .min_uV         = MIN_800_MV,                   \
> -       .uV_step        = STEP_25_MV,                   \
> -       .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
> -       .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
> -       .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
> -       .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
> -       .enable_mask    = S2MPS14_ENABLE_MASK           \
> -}
> -#define regulator_desc_s2mps14_ldo2(num) {             \
> -       .name           = "LDO"#num,                    \
> -       .id             = S2MPS14_LDO##num,             \
> -       .ops            = &s2mps14_reg_ops,             \
> -       .type           = REGULATOR_VOLTAGE,            \
> -       .owner          = THIS_MODULE,                  \
> -       .min_uV         = MIN_1800_MV,                  \
> -       .uV_step        = STEP_25_MV,                   \
> -       .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
> -       .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
> -       .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
> -       .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
> -       .enable_mask    = S2MPS14_ENABLE_MASK           \
> -}
> -#define regulator_desc_s2mps14_ldo3(num) {             \
> +#define regulator_desc_s2mps14_ldo(num, min, step) {   \
>         .name           = "LDO"#num,                    \
>         .id             = S2MPS14_LDO##num,             \
>         .ops            = &s2mps14_reg_ops,             \
>         .type           = REGULATOR_VOLTAGE,            \
>         .owner          = THIS_MODULE,                  \
> -       .min_uV         = MIN_800_MV,                   \
> -       .uV_step        = STEP_12_5_MV,                 \
> +       .min_uV         = min,                          \
> +       .uV_step        = step,                         \
>         .n_voltages     = S2MPS14_LDO_N_VOLTAGES,       \
>         .vsel_reg       = S2MPS14_REG_L1CTRL + num - 1, \
>         .vsel_mask      = S2MPS14_LDO_VSEL_MASK,        \
>         .enable_reg     = S2MPS14_REG_L1CTRL + num - 1, \
>         .enable_mask    = S2MPS14_ENABLE_MASK           \
>  }
> -#define regulator_desc_s2mps14_buck1235(num) {                 \
> +
> +#define regulator_desc_s2mps14_buck(num, min, step) {          \
>         .name           = "BUCK"#num,                           \
>         .id             = S2MPS14_BUCK##num,                    \
>         .ops            = &s2mps14_reg_ops,                     \
>         .type           = REGULATOR_VOLTAGE,                    \
>         .owner          = THIS_MODULE,                          \
> -       .min_uV         = MIN_600_MV,                           \
> -       .uV_step        = STEP_6_25_MV,                         \
> +       .min_uV         = min,                                  \
> +       .uV_step        = step,                                 \
>         .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
>         .linear_min_sel = S2MPS14_BUCK1235_START_SEL,           \
>         .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
> @@ -525,54 +452,38 @@ static struct regulator_ops s2mps14_reg_ops = {
>         .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
>         .enable_mask    = S2MPS14_ENABLE_MASK                   \
>  }
> -#define regulator_desc_s2mps14_buck4(num) {                    \
> -       .name           = "BUCK"#num,                           \
> -       .id             = S2MPS14_BUCK##num,                    \
> -       .ops            = &s2mps14_reg_ops,                     \
> -       .type           = REGULATOR_VOLTAGE,                    \
> -       .owner          = THIS_MODULE,                          \
> -       .min_uV         = MIN_1400_MV,                          \
> -       .uV_step        = STEP_12_5_MV,                         \
> -       .n_voltages     = S2MPS14_BUCK_N_VOLTAGES,              \
> -       .linear_min_sel = S2MPS14_BUCK4_START_SEL,              \
> -       .ramp_delay     = S2MPS14_BUCK_RAMP_DELAY,              \
> -       .vsel_reg       = S2MPS14_REG_B1CTRL2 + (num - 1) * 2,  \
> -       .vsel_mask      = S2MPS14_BUCK_VSEL_MASK,               \
> -       .enable_reg     = S2MPS14_REG_B1CTRL1 + (num - 1) * 2,  \
> -       .enable_mask    = S2MPS14_ENABLE_MASK                   \
> -}
>
>  static const struct regulator_desc s2mps14_regulators[] = {
> -       regulator_desc_s2mps14_ldo3(1),
> -       regulator_desc_s2mps14_ldo3(2),
> -       regulator_desc_s2mps14_ldo1(3),
> -       regulator_desc_s2mps14_ldo1(4),
> -       regulator_desc_s2mps14_ldo3(5),
> -       regulator_desc_s2mps14_ldo3(6),
> -       regulator_desc_s2mps14_ldo1(7),
> -       regulator_desc_s2mps14_ldo2(8),
> -       regulator_desc_s2mps14_ldo3(9),
> -       regulator_desc_s2mps14_ldo3(10),
> -       regulator_desc_s2mps14_ldo1(11),
> -       regulator_desc_s2mps14_ldo2(12),
> -       regulator_desc_s2mps14_ldo2(13),
> -       regulator_desc_s2mps14_ldo2(14),
> -       regulator_desc_s2mps14_ldo2(15),
> -       regulator_desc_s2mps14_ldo2(16),
> -       regulator_desc_s2mps14_ldo2(17),
> -       regulator_desc_s2mps14_ldo2(18),
> -       regulator_desc_s2mps14_ldo1(19),
> -       regulator_desc_s2mps14_ldo1(20),
> -       regulator_desc_s2mps14_ldo1(21),
> -       regulator_desc_s2mps14_ldo3(22),
> -       regulator_desc_s2mps14_ldo1(23),
> -       regulator_desc_s2mps14_ldo2(24),
> -       regulator_desc_s2mps14_ldo2(25),
> -       regulator_desc_s2mps14_buck1235(1),
> -       regulator_desc_s2mps14_buck1235(2),
> -       regulator_desc_s2mps14_buck1235(3),
> -       regulator_desc_s2mps14_buck4(4),
> -       regulator_desc_s2mps14_buck1235(5),
> +       regulator_desc_s2mps14_ldo(1, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(2, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(3, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(4, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(5, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(6, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(7, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(8, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(9, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(10, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(11, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(12, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(13, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(14, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(15, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(16, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(17, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(18, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(19, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(20, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(21, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(22, MIN_800_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV),
> +       regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV),
> +       regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV),
> +       regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV),
>  };
>
>  static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
> --
> 1.9.1
>
> --
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