regulator: rn5t618: Add RN5T567 PMIC support

Extend the driver to support Ricoh RN5T567. Support the additional
DCDC and slightly different voltage range of LDORTC1.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 144cbf5..5472694 100644 (file)
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -636,10 +636,11 @@ config REGULATOR_RK808
          outputs which can be controlled by i2c communication.
 
 config REGULATOR_RN5T618
-       tristate "Ricoh RN5T618 voltage regulators"
+       tristate "Ricoh RN5T567/618 voltage regulators"
        depends on MFD_RN5T618
        help
-         Say y here to support the regulators found on Ricoh RN5T618 PMIC.
+         Say y here to support the regulators found on Ricoh RN5T567 or
+         RN5T618 PMIC.
 
 config REGULATOR_RT5033
        tristate "Richtek RT5033 Regulators"

diff --git a/drivers/regulator/rn5t618-regulator.c b/drivers/regulator/rn5t618-regulator.c
index b85ceb8..9c930eb 100644 (file)
--- a/drivers/regulator/rn5t618-regulator.c
+++ b/drivers/regulator/rn5t618-regulator.c
@@ -46,6 +46,23 @@ static struct regulator_ops rn5t618_reg_ops = {
                .vsel_mask      = (vmask),                              \
        }
 
+static struct regulator_desc rn5t567_regulators[] = {
+       /* DCDC */
+       REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
+       REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
+       REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
+       REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
+       /* LDO */
+       REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
+       REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
+       REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
+       REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
+       REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
+       /* LDO RTC */
+       REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000),
+       REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
+};
+
 static struct regulator_desc rn5t618_regulators[] = {
        /* DCDC */
        REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
@@ -67,18 +84,33 @@ static int rn5t618_regulator_probe(struct platform_device *pdev)
        struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
        struct regulator_config config = { };
        struct regulator_dev *rdev;
+       struct regulator_desc *regulators;
        int i;
 
+       switch (rn5t618->variant) {
+       case RN5T567:
+               regulators = rn5t567_regulators;
+               break;
+       case RN5T618:
+               regulators = rn5t618_regulators;
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       config.dev = pdev->dev.parent;
+       config.regmap = rn5t618->regmap;
+
        for (i = 0; i < RN5T618_REG_NUM; i++) {
-               config.dev = pdev->dev.parent;
-               config.regmap = rn5t618->regmap;
+               if (!regulators[i].name)
+                       continue;
 
                rdev = devm_regulator_register(&pdev->dev,
-                                              &rn5t618_regulators[i],
+                                              &regulators[i],
                                               &config);
                if (IS_ERR(rdev)) {
                        dev_err(&pdev->dev, "failed to register %s regulator\n",
-                               rn5t618_regulators[i].name);
+                               regulators[i].name);
                        return PTR_ERR(rdev);
                }
        }

diff --git a/include/linux/mfd/rn5t618.h b/include/linux/mfd/rn5t618.h
index 54179c2..cadc654 100644 (file)
--- a/include/linux/mfd/rn5t618.h
+++ b/include/linux/mfd/rn5t618.h
@@ -217,6 +217,7 @@ enum {
        RN5T618_DCDC1,
        RN5T618_DCDC2,
        RN5T618_DCDC3,
+       RN5T618_DCDC4,
        RN5T618_LDO1,
        RN5T618_LDO2,
        RN5T618_LDO3,