--- /dev/null
+/*
+ * max77693.c - Regulator driver for the Maxim 77693
+ *
+ * Copyright (C) 2011 Samsung Electronics
+ * Sukdong Kim <sukdong.kim@smasung.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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * This driver is based on max8997.c
+ */
+
+#include <linux/bug.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/export.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/max77693.h>
+#include <linux/mfd/max77693-private.h>
+
+struct max77693_data {
+ struct device *dev;
+ struct max77693_dev *iodev;
+ int num_regulators;
+ struct regulator_dev **rdev;
+
+ u8 saved_states[MAX77693_REG_MAX];
+};
+
+struct voltage_map_desc {
+ int min;
+ int max;
+ int step;
+ unsigned int n_bits;
+};
+
+/* current map in mA */
+static const struct voltage_map_desc charger_current_map_desc = {
+ .min = 60, .max = 2580, .step = 20, .n_bits = 7,
+};
+
+static const struct voltage_map_desc topoff_current_map_desc = {
+ .min = 50, .max = 200, .step = 10, .n_bits = 4,
+};
+
+static const struct voltage_map_desc *reg_voltage_map[] = {
+ [MAX77693_ESAFEOUT1] = NULL,
+ [MAX77693_ESAFEOUT2] = NULL,
+ [MAX77693_CHARGER] = &charger_current_map_desc,
+};
+
+static inline int max77693_get_rid(struct regulator_dev *rdev)
+{
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ return rdev_get_id(rdev);
+}
+
+static int max77693_list_voltage_safeout(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ int rid = max77693_get_rid(rdev);
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ if (rid == MAX77693_ESAFEOUT1 || rid == MAX77693_ESAFEOUT2) {
+ switch (selector) {
+ case 0:
+ return 4850000;
+ case 1:
+ return 4900000;
+ case 2:
+ return 4950000;
+ case 3:
+ return 3300000;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int max77693_get_enable_register(struct regulator_dev *rdev,
+ int *reg, int *mask, int *pattern)
+{
+ int rid = max77693_get_rid(rdev);
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ switch (rid) {
+ case MAX77693_ESAFEOUT1...MAX77693_ESAFEOUT2:
+ *reg = MAX77693_CHG_REG_SAFEOUT_CTRL;
+ *mask = 0x40 << (rid - MAX77693_ESAFEOUT1);
+ *pattern = 0x40 << (rid - MAX77693_ESAFEOUT1);
+ break;
+ case MAX77693_CHARGER:
+ *reg = MAX77693_CHG_REG_CHG_CNFG_00;
+ *mask = 0xf;
+ *pattern = 0x5;
+ break;
+ default:
+ /* Not controllable or not exists */
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max77693_get_disable_register(struct regulator_dev *rdev,
+ int *reg, int *mask, int *pattern)
+{
+ int rid = max77693_get_rid(rdev);
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ switch (rid) {
+ case MAX77693_ESAFEOUT1...MAX77693_ESAFEOUT2:
+ *reg = MAX77693_CHG_REG_SAFEOUT_CTRL;
+ *mask = 0x40 << (rid - MAX77693_ESAFEOUT1);
+ *pattern = 0x00;
+ break;
+ case MAX77693_CHARGER:
+ *reg = MAX77693_CHG_REG_CHG_CNFG_00;
+ *mask = 0xf;
+ *pattern = 0x00;
+ break;
+ default:
+ /* Not controllable or not exists */
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max77693_reg_is_enabled(struct regulator_dev *rdev)
+{
+ int ret, reg, mask, pattern;
+ u8 val;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ ret = max77693_get_enable_register(rdev, ®, &mask, &pattern);
+ if (ret == -EINVAL)
+ return 1; /* "not controllable" */
+ else if (ret)
+ return ret;
+
+ ret = max77693_read_reg(rdev->regmap, reg, &val);
+ if (ret)
+ return ret;
+
+ return (val & mask) == pattern;
+}
+
+static int max77693_reg_enable(struct regulator_dev *rdev)
+{
+ int ret, reg, mask, pattern;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ ret = max77693_get_enable_register(rdev, ®, &mask, &pattern);
+ if (ret)
+ return ret;
+
+ return max77693_update_reg(rdev->regmap, reg, pattern, mask);
+}
+
+static int max77693_reg_disable(struct regulator_dev *rdev)
+{
+ int ret, reg, mask, pattern;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ ret = max77693_get_disable_register(rdev, ®, &mask, &pattern);
+ if (ret)
+ return ret;
+
+ return max77693_update_reg(rdev->regmap, reg, pattern, mask);
+}
+
+static int max77693_get_voltage_register(struct regulator_dev *rdev,
+ int *_reg, int *_shift, int *_mask)
+{
+ int rid = max77693_get_rid(rdev);
+ int reg, shift = 0, mask = 0x3f;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ switch (rid) {
+ case MAX77693_ESAFEOUT1...MAX77693_ESAFEOUT2:
+ reg = MAX77693_CHG_REG_SAFEOUT_CTRL;
+ shift = (rid == MAX77693_ESAFEOUT2) ? 2 : 0;
+ mask = 0x3;
+ break;
+ case MAX77693_CHARGER:
+ reg = MAX77693_CHG_REG_CHG_CNFG_09;
+ shift = 0;
+ mask = 0x7f;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ *_reg = reg;
+ *_shift = shift;
+ *_mask = mask;
+
+ return 0;
+}
+
+static int max77693_list_voltage(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ const struct voltage_map_desc *desc;
+ int rid = max77693_get_rid(rdev);
+ int val;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ if (rid >= ARRAY_SIZE(reg_voltage_map) || rid < 0)
+ return -EINVAL;
+
+ desc = reg_voltage_map[rid];
+ if (desc == NULL)
+ return -EINVAL;
+
+ /* the first four codes for charger current are all 60mA */
+ if (rid == MAX77693_CHARGER) {
+ if (selector <= 3)
+ selector = 0;
+ else
+ selector -= 3;
+ }
+
+ val = desc->min + desc->step * selector;
+ if (val > desc->max)
+ return -EINVAL;
+
+ return val * 1000;
+}
+
+static int max77693_get_voltage(struct regulator_dev *rdev)
+{
+ int reg, shift, mask, ret;
+
+ u8 val;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ ret = max77693_get_voltage_register(rdev, ®, &shift, &mask);
+ if (ret)
+ return ret;
+
+ ret = max77693_read_reg(rdev->regmap, reg, &val);
+ if (ret)
+ return ret;
+
+ val >>= shift;
+ val &= mask;
+
+ if (rdev->desc && rdev->desc->ops && rdev->desc->ops->list_voltage)
+ return rdev->desc->ops->list_voltage(rdev, val);
+
+ /*
+ * max77693_list_voltage returns value for any rdev with voltage_map,
+ * which works for "CHARGER" and "CHARGER TOPOFF" that do not have
+ * list_voltage ops (they are current regulators).
+ */
+ return max77693_list_voltage(rdev, val);
+}
+
+static inline int max77693_get_voltage_proper_val(
+ const struct voltage_map_desc *desc,
+ int min_vol, int max_vol)
+{
+ int i = 0;
+
+ if (desc == NULL)
+ return -EINVAL;
+
+ if (max_vol < desc->min || min_vol > desc->max)
+ return -EINVAL;
+
+ while (desc->min + desc->step * i < min_vol &&
+ desc->min + desc->step * i < desc->max)
+ i++;
+
+ if (desc->min + desc->step * i > max_vol)
+ return -EINVAL;
+
+ if (i >= (1 << desc->n_bits))
+ return -EINVAL;
+
+ return i;
+}
+
+static int max77693_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
+ const struct voltage_map_desc *desc;
+ int rid = max77693_get_rid(rdev);
+ int reg, shift = 0, mask, ret;
+ int i;
+ u8 org;
+
+ switch (rid) {
+ case MAX77693_CHARGER:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ desc = reg_voltage_map[rid];
+
+ i = max77693_get_voltage_proper_val(desc, min_vol, max_vol);
+ if (i < 0)
+ return i;
+
+ ret = max77693_get_voltage_register(rdev, ®, &shift, &mask);
+ if (ret)
+ return ret;
+
+ max77693_read_reg(rdev->regmap, reg, &org);
+ org = (org & mask) >> shift;
+
+ /* the first four codes for charger current are all 60mA */
+ if (rid == MAX77693_CHARGER)
+ i += 3;
+
+ ret = max77693_update_reg(rdev->regmap, reg, i << shift, mask << shift);
+
+ return ret;
+}
+
+static const int safeoutvolt[] = {
+ 3300000,
+ 4850000,
+ 4900000,
+ 4950000,
+};
+
+/* For SAFEOUT1 and SAFEOUT2 */
+static int max77693_set_voltage_safeout(struct regulator_dev *rdev,
+ int min_uV, int max_uV,
+ unsigned *selector)
+{
+ int rid = max77693_get_rid(rdev);
+ int reg, shift = 0, mask, ret;
+ int i = 0;
+ u8 val;
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ if (rid != MAX77693_ESAFEOUT1 && rid != MAX77693_ESAFEOUT2)
+ return -EINVAL;
+
+ for (i = 0; i < ARRAY_SIZE(safeoutvolt); i++) {
+ if (min_uV <= safeoutvolt[i] && max_uV >= safeoutvolt[i])
+ break;
+ }
+
+ if (i >= ARRAY_SIZE(safeoutvolt))
+ return -EINVAL;
+
+ if (i == 0)
+ val = 0x3;
+ else
+ val = i - 1;
+
+ ret = max77693_get_voltage_register(rdev, ®, &shift, &mask);
+ if (ret)
+ return ret;
+
+ ret = max77693_update_reg(rdev->regmap, reg, val << shift, mask << shift);
+ *selector = val;
+
+ return ret;
+}
+
+static int max77693_reg_enable_suspend(struct regulator_dev *rdev)
+{
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ return 0;
+}
+
+static int max77693_reg_disable_suspend(struct regulator_dev *rdev)
+{
+ struct max77693_data *max77693 = rdev_get_drvdata(rdev);
+ int ret, reg, mask, pattern;
+ int rid = max77693_get_rid(rdev);
+ dev_info(&rdev->dev, "func:%s\n", __func__);
+ ret = max77693_get_disable_register(rdev, ®, &mask, &pattern);
+ if (ret)
+ return ret;
+
+ max77693_read_reg(rdev->regmap, reg, &max77693->saved_states[rid]);
+
+ dev_dbg(&rdev->dev, "Full Power-Off for %s (%xh -> %xh)\n",
+ rdev->desc->name, max77693->saved_states[rid] & mask,
+ (~pattern) & mask);
+ return max77693_update_reg(rdev->regmap, reg, pattern, mask);
+}
+
+/*
+ * max77693_muic_is_enable_otg - Check the power state of otg
+ * @rdev: the instance for voltage/current regulator class device
+ */
+static bool max77693_muic_is_enable_otg(struct regulator_dev *rdev)
+{
+ u8 chg_cnfg_00;
+ u8 mask;
+ u8 state;
+
+ /* OTG on, boost on, DIS_MUIC_CTRL=1 */
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, &chg_cnfg_00);
+
+ mask = (CHG_CNFG_00_OTG_MASK
+ | CHG_CNFG_00_BOOST_MASK
+ | CHG_CNFG_00_DIS_MUIC_CTRL_MASK);
+
+ state = chg_cnfg_00 & mask;
+
+ if (state == mask)
+ return true;
+ else
+ return false;
+}
+
+/*
+ * max77693_muic_is_enable_usb - Check the power state of usb
+ * @rdev: the instance for voltage/current regulator class device
+ */
+static bool max77693_muic_is_enable_usb(struct regulator_dev *rdev)
+{
+ u8 chg_cnfg_00;
+ bool state = false;
+
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, &chg_cnfg_00);
+
+ if (chg_cnfg_00 == 0x05)
+ state = true;
+ else if (chg_cnfg_00 == 0x04)
+ state = false;
+
+ return state;
+}
+
+/*
+ * max77693_muic_enable_otg - Enable/disable otg feature on max77693
+ * @rdev: the instance for voltage/current regulator class device
+ * @enable: the state of otg feature (true: ON, false: OFF)
+ */
+static void max77693_muic_enable_otg(struct regulator_dev *rdev, int enable)
+{
+ struct max77693_data *max77693 = rdev_get_drvdata(rdev);
+ struct regmap *regmap_muic = max77693->iodev->regmap_muic;
+ static u8 chg_int_state; /* Restore charger interrupt states */
+ u8 int_mask;
+ u8 cdetctrl1;
+ u8 chg_cnfg_00;
+
+ dev_info(&rdev->dev, "enable(%d)\n", enable);
+
+ /*
+ * FIXME: This function write/read directly the register of max77693
+ * charger device. It has dependency between muic and charger
+ * device. The dependency between two device have to be removed.
+ * - MAX77693_CHG_REG_CHG_CNFG_00 : control charger/OTG/buck/boost
+ * - MAX77693_CHG_REG_CHG_INT_MASK
+ */
+ if (enable) {
+ /* disable charger interrupt */
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_INT_MASK, &int_mask);
+ chg_int_state = int_mask;
+ int_mask |= (1 << 4); /* disable chgin intr */
+ int_mask |= (1 << 6); /* disable chg */
+ int_mask &= ~(1 << 0); /* enable byp intr */
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_INT_MASK, int_mask);
+
+ /* disable charger detection */
+ max77693_read_reg(regmap_muic,
+ MAX77693_MUIC_REG_CDETCTRL1, &cdetctrl1);
+ cdetctrl1 &= ~(1 << 0);
+ max77693_write_reg(regmap_muic,
+ MAX77693_MUIC_REG_CDETCTRL1, cdetctrl1);
+
+ /* OTG on, boost on, DIS_MUIC_CTRL=1 */
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, &chg_cnfg_00);
+ chg_cnfg_00 &= ~(CHG_CNFG_00_CHG_MASK
+ | CHG_CNFG_00_OTG_MASK
+ | CHG_CNFG_00_BUCK_MASK
+ | CHG_CNFG_00_BOOST_MASK
+ | CHG_CNFG_00_DIS_MUIC_CTRL_MASK);
+ chg_cnfg_00 |= (CHG_CNFG_00_OTG_MASK
+ | CHG_CNFG_00_BOOST_MASK
+ | CHG_CNFG_00_DIS_MUIC_CTRL_MASK);
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, chg_cnfg_00);
+ } else {
+ /* OTG off, boost off, (buck on),
+ DIS_MUIC_CTRL = 0 unless CHG_ENA = 1 */
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, &chg_cnfg_00);
+ chg_cnfg_00 &= ~(CHG_CNFG_00_OTG_MASK
+ | CHG_CNFG_00_BOOST_MASK
+ | CHG_CNFG_00_DIS_MUIC_CTRL_MASK);
+ chg_cnfg_00 |= CHG_CNFG_00_BUCK_MASK;
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, chg_cnfg_00);
+
+ mdelay(50);
+
+ /* enable charger detection */
+ max77693_read_reg(regmap_muic,
+ MAX77693_MUIC_REG_CDETCTRL1, &cdetctrl1);
+ cdetctrl1 |= (1 << 0);
+ max77693_write_reg(regmap_muic,
+ MAX77693_MUIC_REG_CDETCTRL1, cdetctrl1);
+
+ /* enable charger interrupt */
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_INT_MASK, chg_int_state);
+ max77693_read_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_INT_MASK, &int_mask);
+ }
+
+ dev_info(&rdev->dev,
+ "INT_MASK(0x%x), CDETCTRL1(0x%x), CHG_CNFG_00(0x%x)\n",
+ int_mask, cdetctrl1, chg_cnfg_00);
+}
+
+/*
+ * max77693_muic_enable_powered_usb - Enable/disable usb feature on max77693
+ * @rdev: the instance for voltage/current regulator class device
+ * @enable: the state of USB feature (true: ON, false: OFF)
+ */
+static void max77693_muic_enable_usb(struct regulator_dev *rdev, int enable)
+{
+ dev_info(&rdev->dev, "enable(%d)\n", enable);
+
+ if (enable) {
+ /* OTG on, boost on */
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, 0x05);
+
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_02, 0x0E);
+ } else {
+ /* OTG off, boost off, (buck on) */
+ max77693_write_reg(rdev->regmap,
+ MAX77693_CHG_REG_CHG_CNFG_00, 0x04);
+ }
+}
+
+static int max77693_usb_is_enabled(struct regulator_dev *rdev)
+{
+ struct regulator_desc *desc = rdev->desc;
+ int ret;
+
+ switch (desc->id) {
+ case MAX77693_USBHOST:
+ ret = max77693_muic_is_enable_otg(rdev);
+ break;
+ case MAX77693_USB:
+ ret = max77693_muic_is_enable_usb(rdev);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int max77693_usb_enable(struct regulator_dev *rdev)
+{
+ struct regulator_desc *desc = rdev->desc;
+
+ switch (desc->id) {
+ case MAX77693_USBHOST:
+ max77693_muic_enable_otg(rdev, true);
+ break;
+ case MAX77693_USB:
+ max77693_muic_enable_usb(rdev, true);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int max77693_usb_disable(struct regulator_dev *rdev)
+{
+ struct regulator_desc *desc = rdev->desc;
+
+ switch (desc->id) {
+ case MAX77693_USBHOST:
+ max77693_muic_enable_otg(rdev, false);
+ break;
+ case MAX77693_USB:
+ max77693_muic_enable_usb(rdev, false);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct regulator_ops max77693_safeout_ops = {
+ .list_voltage = max77693_list_voltage_safeout,
+ .is_enabled = max77693_reg_is_enabled,
+ .enable = max77693_reg_enable,
+ .disable = max77693_reg_disable,
+ .get_voltage = max77693_get_voltage,
+ .set_voltage = max77693_set_voltage_safeout,
+ .set_suspend_enable = max77693_reg_enable_suspend,
+ .set_suspend_disable = max77693_reg_disable_suspend,
+};
+
+static struct regulator_ops max77693_charger_ops = {
+ .is_enabled = max77693_reg_is_enabled,
+ .enable = max77693_reg_enable,
+ .disable = max77693_reg_disable,
+ .get_current_limit = max77693_get_voltage,
+ .set_current_limit = max77693_set_voltage,
+};
+
+static struct regulator_ops max77693_usb_ops = {
+ .is_enabled = max77693_usb_is_enabled,
+ .enable = max77693_usb_enable,
+ .disable = max77693_usb_disable,
+};
+
+static struct regulator_desc regulators[] = {
+ {
+ .name = "ESAFEOUT1",
+ .id = MAX77693_ESAFEOUT1,
+ .ops = &max77693_safeout_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .n_voltages = 4,
+ }, {
+ .name = "ESAFEOUT2",
+ .id = MAX77693_ESAFEOUT2,
+ .ops = &max77693_safeout_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .n_voltages = 4,
+ }, {
+ .name = "CHARGER",
+ .id = MAX77693_CHARGER,
+ .ops = &max77693_charger_ops,
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "USBHOST",
+ .id = MAX77693_USBHOST,
+ .ops = &max77693_usb_ops,
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "USB",
+ .id = MAX77693_USB,
+ .ops = &max77693_usb_ops,
+ .type = REGULATOR_CURRENT,
+ .owner = THIS_MODULE,
+ },
+};
+
+static __devinit int max77693_pmic_probe(struct platform_device *pdev)
+{
+ struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+ struct max77693_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct max77693_data *max77693;
+ int i, ret, size;
+ struct regulator_config config = {};
+
+ dev_info(&pdev->dev, "%s\n", __func__);
+ if (!pdata) {
+ pr_info("[%s:%d] !pdata\n", __FILE__, __LINE__);
+ dev_err(pdev->dev.parent, "No platform init data supplied.\n");
+ return -ENODEV;
+ }
+
+ max77693 = devm_kzalloc(&pdev->dev, sizeof(struct max77693_data),
+ GFP_KERNEL);
+ if (!max77693) {
+ pr_info("[%s:%d] if (!max77693)\n", __FILE__, __LINE__);
+ return -ENOMEM;
+ }
+ size = sizeof(struct regulator_dev *) * pdata->num_regulators;
+ max77693->rdev =devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+ if (!max77693->rdev) {
+ pr_info("[%s:%d] if (!max77693->rdev)\n", __FILE__, __LINE__);
+ return -ENOMEM;
+ }
+
+ max77693->dev = &pdev->dev;
+ max77693->iodev = iodev;
+ max77693->num_regulators = pdata->num_regulators;
+
+ config.dev = &pdev->dev;
+ config.regmap = iodev->regmap;
+ config.driver_data = max77693;
+ platform_set_drvdata(pdev, max77693);
+
+ pr_info("[%s:%d] pdata->num_regulators:%d\n", __FILE__, __LINE__,
+ pdata->num_regulators);
+ for (i = 0; i < pdata->num_regulators; i++) {
+ const struct voltage_map_desc *desc;
+ int id = pdata->regulators[i].id;
+
+ config.init_data = pdata->regulators[i].initdata;
+
+ pr_info("[%s:%d] for in pdata->num_regulators:%d\n", __FILE__,
+ __LINE__, pdata->num_regulators);
+ desc = reg_voltage_map[id];
+ if (id == MAX77693_ESAFEOUT1 || id == MAX77693_ESAFEOUT2)
+ regulators[id].n_voltages = 4;
+
+ max77693->rdev[i] = regulator_register(®ulators[id], &config);
+ if (IS_ERR(max77693->rdev[i])) {
+ ret = PTR_ERR(max77693->rdev[i]);
+ dev_err(max77693->dev, "regulator init failed for %d\n",
+ id);
+ max77693->rdev[i] = NULL;
+ goto err;
+ }
+ }
+
+ return 0;
+ err:
+ pr_info("[%s:%d] err:\n", __FILE__, __LINE__);
+ while (--i >= 0)
+ regulator_unregister(max77693->rdev[i]);
+
+ return ret;
+}
+
+static int __devexit max77693_pmic_remove(struct platform_device *pdev)
+{
+ struct max77693_data *max77693 = platform_get_drvdata(pdev);
+ struct regulator_dev **rdev = max77693->rdev;
+ int i;
+ dev_info(&pdev->dev, "%s\n", __func__);
+ for (i = 0; i < max77693->num_regulators; i++)
+ if (rdev[i])
+ regulator_unregister(rdev[i]);
+
+ return 0;
+}
+
+static const struct platform_device_id max77693_pmic_id[] = {
+ {"max77693-safeout", 0},
+ {},
+};
+
+MODULE_DEVICE_TABLE(platform, max77693_pmic_id);
+
+static struct platform_driver max77693_pmic_driver = {
+ .driver = {
+ .name = "max77693-safeout",
+ .owner = THIS_MODULE,
+ },
+ .probe = max77693_pmic_probe,
+ .remove = __devexit_p(max77693_pmic_remove),
+ .id_table = max77693_pmic_id,
+};
+
+static int __init max77693_pmic_init(void)
+{
+ return platform_driver_register(&max77693_pmic_driver);
+}
+#ifdef CONFIG_FAST_RESUME
+beforeresume_initcall(max77693_pmic_init);
+#else
+subsys_initcall(max77693_pmic_init);
+#endif
+
+static void __exit max77693_pmic_cleanup(void)
+{
+ platform_driver_unregister(&max77693_pmic_driver);
+}
+
+module_exit(max77693_pmic_cleanup);
+
+MODULE_DESCRIPTION("MAXIM 77693 Regulator Driver");
+MODULE_AUTHOR("Sukdong Kim <Sukdong.Kim@samsung.com>");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-3.10.git / commitdiff