Re: [PATCH v7 08/10] regulator: tps6594-regulator: Add TI TPS65224 PMIC regulators

From: Bhargav Raviprakash
Date: Tue Apr 30 2024 - 09:05:18 EST

Hello,

On Thu, 25 Apr 2024 10:59:22 +0300, Dan Carpenter wrote:
> On Wed, Apr 17, 2024 at 11:49:59AM +0000, Bhargav Raviprakash wrote:
> > From: Nirmala Devi Mal Nadar <m.nirmaladevi@xxxxxxxx>
> >
> > Add support for TPS65224 regulators (bucks and LDOs) to TPS6594 driver as
> > they have significant functional overlap. TPS65224 PMIC has 4 buck
> > regulators and 3 LDOs. BUCK12 can operate in dual phase.
> > The output voltages are configurable and are meant to supply power to the
> > main processor and other components.
> >
> > Signed-off-by: Nirmala Devi Mal Nadar <m.nirmaladevi@xxxxxxxx>
> > Signed-off-by: Bhargav Raviprakash <bhargav.r@xxxxxxxx>
> > Reviewed-by: Mark Brown <broonie@xxxxxxxxxx>
> > ---
> > drivers/regulator/Kconfig | 4 +-
> > drivers/regulator/tps6594-regulator.c | 243 +++++++++++++++++++++++---
> > 2 files changed, 222 insertions(+), 25 deletions(-)
> >
> > diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
> > index 7db0a29b5..1e4119f00 100644
> > --- a/drivers/regulator/Kconfig
> > +++ b/drivers/regulator/Kconfig
> > @@ -1563,13 +1563,15 @@ config REGULATOR_TPS6594
> > depends on MFD_TPS6594 && OF
> > default MFD_TPS6594
> > help
> > - This driver supports TPS6594 voltage regulator chips.
> > + This driver supports TPS6594 series and TPS65224 voltage regulator chips.
> > TPS6594 series of PMICs have 5 BUCKs and 4 LDOs
> > voltage regulators.
> > BUCKs 1,2,3,4 can be used in single phase or multiphase mode.
> > Part number defines which single or multiphase mode is i used.
> > It supports software based voltage control
> > for different voltage domains.
> > + TPS65224 PMIC has 4 BUCKs and 3 LDOs. BUCK12 can be used in dual phase.
> > + All BUCKs and LDOs volatge can be controlled through software.
> >
> > config REGULATOR_TPS6524X
> > tristate "TI TPS6524X Power regulators"
> > diff --git a/drivers/regulator/tps6594-regulator.c b/drivers/regulator/tps6594-regulator.c
> > index b7f0c8779..3c8e0b1cd 100644
> > --- a/drivers/regulator/tps6594-regulator.c
> > +++ b/drivers/regulator/tps6594-regulator.c
> > @@ -66,6 +66,15 @@ static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = {
> > REGULATOR_EVENT_OVER_VOLTAGE_WARN },
> > };
> >
> > +static struct tps6594_regulator_irq_type tps65224_ext_regulator_irq_types[] = {
> > + { TPS65224_IRQ_NAME_VCCA_UVOV, "VCCA", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > + { TPS65224_IRQ_NAME_VMON1_UVOV, "VMON1", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > + { TPS65224_IRQ_NAME_VMON2_UVOV, "VMON2", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > struct tps6594_regulator_irq_data {
> > struct device *dev;
> > struct tps6594_regulator_irq_type *type;
> > @@ -122,6 +131,27 @@ static const struct linear_range ldos_4_ranges[] = {
> > REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000),
> > };
> >
> > +/* Voltage range for TPS65224 Bucks and LDOs */
> > +static const struct linear_range tps65224_bucks_1_ranges[] = {
> > + REGULATOR_LINEAR_RANGE(500000, 0x0a, 0x0e, 20000),
> > + REGULATOR_LINEAR_RANGE(600000, 0x0f, 0x72, 5000),
> > + REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000),
> > + REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xfd, 20000),
> > +};
> > +
> > +static const struct linear_range tps65224_bucks_2_3_4_ranges[] = {
> > + REGULATOR_LINEAR_RANGE(500000, 0x0, 0x1a, 25000),
> > + REGULATOR_LINEAR_RANGE(1200000, 0x1b, 0x45, 50000),
> > +};
> > +
> > +static const struct linear_range tps65224_ldos_1_ranges[] = {
> > + REGULATOR_LINEAR_RANGE(1200000, 0xC, 0x36, 50000),
> > +};
> > +
> > +static const struct linear_range tps65224_ldos_2_3_ranges[] = {
> > + REGULATOR_LINEAR_RANGE(600000, 0x0, 0x38, 50000),
> > +};
> > +
> > /* Operations permitted on BUCK1/2/3/4/5 */
> > static const struct regulator_ops tps6594_bucks_ops = {
> > .is_enabled = regulator_is_enabled_regmap,
> > @@ -197,6 +227,38 @@ static const struct regulator_desc buck_regs[] = {
> > 4, 0, 0, NULL, 0, 0),
> > };
> >
> > +/* Buck configuration for TPS65224 */
> > +static const struct regulator_desc tps65224_buck_regs[] = {
> > + TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1,
> > + REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
> > + TPS6594_REG_BUCKX_VOUT_1(0),
> > + TPS65224_MASK_BUCK1_VSET,
> > + TPS6594_REG_BUCKX_CTRL(0),
> > + TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
> > + 4, 0, 0, NULL, 0, 0),
> > + TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2,
> > + REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_VOUT_1(1),
> > + TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_CTRL(1),
> > + TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
> > + 4, 0, 0, NULL, 0, 0),
> > + TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3,
> > + REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_VOUT_1(2),
> > + TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_CTRL(2),
> > + TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
> > + 4, 0, 0, NULL, 0, 0),
> > + TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4,
> > + REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_VOUT_1(3),
> > + TPS65224_MASK_BUCKS_VSET,
> > + TPS6594_REG_BUCKX_CTRL(3),
> > + TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_2_3_4_ranges,
> > + 4, 0, 0, NULL, 0, 0),
> > +};
> > +
> > static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = {
> > { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },
> > { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },
> > @@ -269,6 +331,41 @@ static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = {
> > REGULATOR_EVENT_OVER_CURRENT },
> > };
> >
> > +static struct tps6594_regulator_irq_type tps65224_buck1_irq_types[] = {
> > + { TPS65224_IRQ_NAME_BUCK1_UVOV, "BUCK1", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_buck2_irq_types[] = {
> > + { TPS65224_IRQ_NAME_BUCK2_UVOV, "BUCK2", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_buck3_irq_types[] = {
> > + { TPS65224_IRQ_NAME_BUCK3_UVOV, "BUCK3", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_buck4_irq_types[] = {
> > + { TPS65224_IRQ_NAME_BUCK4_UVOV, "BUCK4", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_ldo1_irq_types[] = {
> > + { TPS65224_IRQ_NAME_LDO1_UVOV, "LDO1", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_ldo2_irq_types[] = {
> > + { TPS65224_IRQ_NAME_LDO2_UVOV, "LDO2", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > +static struct tps6594_regulator_irq_type tps65224_ldo3_irq_types[] = {
> > + { TPS65224_IRQ_NAME_LDO3_UVOV, "LDO3", "voltage out of range",
> > + REGULATOR_EVENT_REGULATION_OUT },
> > +};
> > +
> > static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = {
> > tps6594_buck1_irq_types,
> > tps6594_buck2_irq_types,
> > @@ -284,7 +381,20 @@ static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = {
> > tps6594_ldo4_irq_types,
> > };
> >
> > -static const struct regulator_desc multi_regs[] = {
> > +static struct tps6594_regulator_irq_type *tps65224_bucks_irq_types[] = {
> > + tps65224_buck1_irq_types,
> > + tps65224_buck2_irq_types,
> > + tps65224_buck3_irq_types,
> > + tps65224_buck4_irq_types,
> > +};
> > +
> > +static struct tps6594_regulator_irq_type *tps65224_ldos_irq_types[] = {
> > + tps65224_ldo1_irq_types,
> > + tps65224_ldo2_irq_types,
> > + tps65224_ldo3_irq_types,
> > +};
> > +
> > +static const struct regulator_desc tps6594_multi_regs[] = {
> > TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
> > REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET,
> > TPS6594_REG_BUCKX_VOUT_1(1),
> > @@ -315,7 +425,17 @@ static const struct regulator_desc multi_regs[] = {
> > 4, 4000, 0, NULL, 0, 0),
> > };
> >
> > -static const struct regulator_desc ldo_regs[] = {
> > +static const struct regulator_desc tps65224_multi_regs[] = {
> > + TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1,
> > + REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS65224_MASK_BUCK1_VSET,
> > + TPS6594_REG_BUCKX_VOUT_1(0),
> > + TPS65224_MASK_BUCK1_VSET,
> > + TPS6594_REG_BUCKX_CTRL(0),
> > + TPS6594_BIT_BUCK_EN, 0, 0, tps65224_bucks_1_ranges,
> > + 4, 4000, 0, NULL, 0, 0),
> > +};
> > +
> > +static const struct regulator_desc tps6594_ldo_regs[] = {
> > TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
> > REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
> > TPS6594_REG_LDOX_VOUT(0),
> > @@ -346,6 +466,30 @@ static const struct regulator_desc ldo_regs[] = {
> > 1, 0, 0, NULL, 0, 0),
> > };
> >
> > +static const struct regulator_desc tps65224_ldo_regs[] = {
> > + TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1,
> > + REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_VOUT(0),
> > + TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_CTRL(0),
> > + TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_1_ranges,
> > + 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
> > + TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2,
> > + REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_VOUT(1),
> > + TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_CTRL(1),
> > + TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
> > + 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
> > + TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3,
> > + REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_VOUT(2),
> > + TPS6594_MASK_LDO123_VSET,
> > + TPS6594_REG_LDOX_CTRL(2),
> > + TPS6594_BIT_LDO_EN, 0, 0, tps65224_ldos_2_3_ranges,
> > + 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS),
> > +};
> > +
> > static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
> > {
> > struct tps6594_regulator_irq_data *irq_data = data;
> > @@ -369,17 +513,18 @@ static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data)
> > static int tps6594_request_reg_irqs(struct platform_device *pdev,
> > struct regulator_dev *rdev,
> > struct tps6594_regulator_irq_data *irq_data,
> > - struct tps6594_regulator_irq_type *tps6594_regs_irq_types,
> > + struct tps6594_regulator_irq_type *regs_irq_types,
> > + size_t interrupt_cnt,
> > int *irq_idx)
> > {
> > struct tps6594_regulator_irq_type *irq_type;
> > struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);
> > - int j;
> > + size_t j;
> > int irq;
> > int error;
> >
> > - for (j = 0; j < REGS_INT_NB; j++) {
> > - irq_type = &tps6594_regs_irq_types[j];
> > + for (j = 0; j < interrupt_cnt; j++) {
> > + irq_type = &regs_irq_types[j];
> > irq = platform_get_irq_byname(pdev, irq_type->irq_name);
> > if (irq < 0)
> > return -EINVAL;
> > @@ -412,14 +557,38 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > struct tps6594_ext_regulator_irq_data *irq_ext_reg_data;
> > struct tps6594_regulator_irq_type *irq_type;
> > u8 buck_configured[BUCK_NB] = { 0 };
> > + u8 ldo_configured[LDO_NB] = { 0 };
>
> This should be bool and the related changes like using true/false.
>
> Actually, on reviewing this code even more, I really suggest you first
> do some clean up to this driver and then just change this to:
>
> int nr_ldo;
>
> Then use that instead of LDO_NB.
>
> buck_configured[] should be bool as well.
>
> > u8 buck_multi[MULTI_PHASE_NB] = { 0 };
> > - static const char * const multiphases[] = {"buck12", "buck123", "buck1234", "buck34"};
> > + static const char * const tps6594_multiphases[] = {"buck12", "buck123",
> > + "buck1234", "buck34"};
> > + static const char * const tps65224_multiphases[] = {"buck12"};
>
> The tps65224_multiphases[] array is never used except to get the
> ARRAY_SIZE(). Neither of these are necessary. Just use
> multi_regs[multi].supply_name instead.
>
>
> > static const char *npname;
> > int error, i, irq, multi, delta;
> > int irq_idx = 0;
> > int buck_idx = 0;
> > + unsigned int multi_phase_cnt = 0;
>
> No need to initialize this here.
>
> > size_t ext_reg_irq_nb = 2;
> > size_t reg_irq_nb;
> > + struct tps6594_regulator_irq_type **bucks_irq_types;
> > + const struct regulator_desc *multi_regs;
> > + struct tps6594_regulator_irq_type **ldos_irq_types;
> > + const struct regulator_desc *ldo_regs;
> > + size_t interrupt_count;
> > +
> > + if (tps->chip_id == TPS65224) {
> > + bucks_irq_types = tps65224_bucks_irq_types;
> > + interrupt_count = ARRAY_SIZE(tps65224_buck1_irq_types);
> > + multi_regs = tps65224_multi_regs;
> > + ldos_irq_types = tps65224_ldos_irq_types;
> > + ldo_regs = tps65224_ldo_regs;
> > + } else {
> > + bucks_irq_types = tps6594_bucks_irq_types;
> > + interrupt_count = ARRAY_SIZE(tps6594_buck1_irq_types);
> > + multi_regs = tps6594_multi_regs;
> > + ldos_irq_types = tps6594_ldos_irq_types;
> > + ldo_regs = tps6594_ldo_regs;
>
>
> Initialize multi_phase_cnt in this block with all the other variables
> instead of below.
>
> > + }
> > +
> > enum {
> > MULTI_BUCK12,
> > MULTI_BUCK123,
> > @@ -434,6 +603,10 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > config.driver_data = tps;
> > config.regmap = tps->regmap;
> >
> > + multi_phase_cnt = (tps->chip_id == TPS65224) ?
> > + ARRAY_SIZE(tps65224_multiphases) :
> > + ARRAY_SIZE(tps6594_multiphases);
> > +
> > /*
> > * Switch case defines different possible multi phase config
> > * This is based on dts buck node name.
> > @@ -442,13 +615,13 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > * In case of Multiphase configuration, value should be defined for
> > * buck_configured to avoid creating bucks for every buck in multiphase
> > */
> > - for (multi = MULTI_FIRST; multi < MULTI_NUM; multi++) {
> > - np = of_find_node_by_name(tps->dev->of_node, multiphases[multi]);
> > + for (multi = MULTI_FIRST; multi < multi_phase_cnt; multi++) {
> > + np = of_find_node_by_name(tps->dev->of_node, tps6594_multiphases[multi]);
>
> Use multi_regs[multi].supply_name here.
>
> > npname = of_node_full_name(np);
> > np_pmic_parent = of_get_parent(of_get_parent(np));
> > if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name))
> > continue;
> > - delta = strcmp(npname, multiphases[multi]);
> > + delta = strcmp(npname, tps6594_multiphases[multi]);
> > if (!delta) {
>
> Unrelated to your patch but this should be:
>
> if (strcmp(npname, tps6594_multiphases[multi]) == 0) {
>
> The == means that the strings are equal. No need for a delta variable.
>
> > switch (multi) {
> > case MULTI_BUCK12:
> > @@ -486,6 +659,11 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > /* There is only 4 buck on LP8764 */
> > buck_configured[4] = 1;
> > reg_irq_nb = size_mul(REGS_INT_NB, (BUCK_NB - 1));
> > + } else if (tps->chip_id == TPS65224) {
> > + /* TPS65224 has 4 bucks and 3 LDOs. 1 Interrupt for each buck and ldo */
> > + buck_configured[4] = 1;
> > + ldo_configured[3] = 1;
> > + reg_irq_nb = size_mul(1, (size_add((BUCK_NB - 1), (LDO_NB - 1))));
> > } else {
> > reg_irq_nb = size_mul(REGS_INT_NB, (size_add(BUCK_NB, LDO_NB)));
>
> No need for size_add/mul(). These are small constants so it's not
> going to integer overflow.
>
> The other suggestion here would be to do a clean up of the driver first
> so instead of marking the last buck_configured[4] = 1; we would instead
> say "nr_buck = 4;" Then the math become easier and we can remove the
> comments and the confusing subtractions.
>
> if (tps->chip_id == LP8764) {
> nr_buck = 4;
> nr_ldo = 0;
> } else if (tps->chip_id == TPS65224) {
> nr_buck = ARRAY_SIZE(tps65224_buck_regs);
> nr_ldo = ARRAY_SIZE(tps65224_ldo_regs);
> } else {
> nr_buck = BUCK_NB; // FIXME. ARRAY_SIZE()
> nr_ldo = ARRAY_SIZE(tps6594_ldo_regs);
> }
>
> reg_irq_nb = multi_regs * (nr_buck + nr_ldo);
>
> > }
> > @@ -495,7 +673,7 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > if (!irq_data)
> > return -ENOMEM;
> >
> > - for (i = 0; i < MULTI_PHASE_NB; i++) {
> > + for (i = 0; i < multi_phase_cnt; i++) {
> > if (buck_multi[i] == 0)
> > continue;
> >
> > @@ -508,18 +686,23 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > /* config multiphase buck12+buck34 */
> > if (i == 1)
> > buck_idx = 2;
> > +
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > - tps6594_bucks_irq_types[buck_idx], &irq_idx);
> > + bucks_irq_types[buck_idx],
> > + interrupt_count, &irq_idx);
> > if (error)
> > return error;
> > +
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > - tps6594_bucks_irq_types[buck_idx + 1], &irq_idx);
> > + bucks_irq_types[buck_idx + 1],
> > + interrupt_count, &irq_idx);
> > if (error)
> > return error;
> >
> > if (i == 2 || i == 3) {
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > tps6594_bucks_irq_types[buck_idx + 2],
> > + interrupt_count,
> > &irq_idx);
> > if (error)
> > return error;
> > @@ -527,6 +710,7 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > if (i == 3) {
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > tps6594_bucks_irq_types[buck_idx + 3],
> > + interrupt_count,
> > &irq_idx);
> > if (error)
> > return error;
> > @@ -537,21 +721,26 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > if (buck_configured[i] == 1)
> > continue;
> >
> > - rdev = devm_regulator_register(&pdev->dev, &buck_regs[i], &config);
> > + const struct regulator_desc *buck_cfg = (tps->chip_id == TPS65224) ?
> > + tps65224_buck_regs : buck_regs;
> > +
> > + rdev = devm_regulator_register(&pdev->dev, &buck_cfg[i], &config);
> > if (IS_ERR(rdev))
> > return dev_err_probe(tps->dev, PTR_ERR(rdev),
> > - "failed to register %s regulator\n",
> > - pdev->name);
> > + "failed to register %s regulator\n", pdev->name);
>
> There are too many unrelated white space changes in this patch.
>
> >
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > - tps6594_bucks_irq_types[i], &irq_idx);
> > + bucks_irq_types[i], interrupt_count, &irq_idx);
> > if (error)
> > return error;
> > }
> >
> > - /* LP8764 dosen't have LDO */
> > + /* LP8764 doesn't have LDO */
> > if (tps->chip_id != LP8764) {
> > - for (i = 0; i < ARRAY_SIZE(ldo_regs); i++) {
> > + for (i = 0; i < LDO_NB; i++) {
> > + if (ldo_configured[i] == 1)
> > + continue;
> > +
>
> Now that we have introduced a nr_ldo variable we can delete the
> /* LP8764 doesn't have LDO */ comment and the if LP8764 statement and
> the if (ldo_configured[i] == 1) condition.
>
> for (i = 0; i < nr_ldo; i++) {
> rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
>
> The BUCK loop would only loop nr_buck times as well.
>
> > rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config);
> > if (IS_ERR(rdev))
> > return dev_err_probe(tps->dev, PTR_ERR(rdev),
> > @@ -559,7 +748,7 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> > pdev->name);
> >
> > error = tps6594_request_reg_irqs(pdev, rdev, irq_data,
> > - tps6594_ldos_irq_types[i],
> > + ldos_irq_types[i], interrupt_count,
> > &irq_idx);
> > if (error)
> > return error;
> > @@ -568,16 +757,21 @@ static int tps6594_regulator_probe(struct platform_device *pdev)
> >
> > if (tps->chip_id == LP8764)
> > ext_reg_irq_nb = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
> > + else if (tps->chip_id == TPS65224)
> > + ext_reg_irq_nb = ARRAY_SIZE(tps65224_ext_regulator_irq_types);
>
> Declare an irq_types pointer.
>
> if (tps->chip_id == TPS65224) {
> irq_types = tps65224_ext_regulator_irq_types;
> irq_count = ARRAY_SIZE(tps65224_ext_regulator_irq_types);
> } else {
> irq_types = tps6594_ext_regulator_irq_types;
> if (tps->chip_id == LP8764)
> irq_count = ARRAY_SIZE(tps6594_ext_regulator_irq_types);
> else
> irq_count = 2;
> }
>
> >
> > irq_ext_reg_data = devm_kmalloc_array(tps->dev,
> > - ext_reg_irq_nb,
> > - sizeof(struct tps6594_ext_regulator_irq_data),
> > - GFP_KERNEL);
> > + ext_reg_irq_nb,
> > + sizeof(struct tps6594_ext_regulator_irq_data),
> > + GFP_KERNEL);
>
> Unrelated.
>
> > if (!irq_ext_reg_data)
> > return -ENOMEM;
> >
> > for (i = 0; i < ext_reg_irq_nb; ++i) {
> > - irq_type = &tps6594_ext_regulator_irq_types[i];
> > + if (tps->chip_id == TPS65224)
> > + irq_type = &tps65224_ext_regulator_irq_types[i];
> > + else
> > + irq_type = &tps6594_ext_regulator_irq_types[i];
> >
> > irq = platform_get_irq_byname(pdev, irq_type->irq_name);
> > if (irq < 0)
>
> regards,
> dan carpenter

Thanks for all the feedback and suggestions.
We will modify accordingly in the next version.

Regards,
Bhargav