From 156f252857dfd81f03d77d09e33b5f7d2b113e2b Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 16 Jun 2010 09:04:16 +0200 Subject: drivers: regulator: add Maxim 8998 driver Acked-by: Mark Brown This patch adds voltage regulator driver for Maxim 8998 chip. This chip is used on Samsung Aquila and GONI boards and provides following functionalities: - 4 BUCK voltage converters, 17 LDO power regulators and 5 other power controllers - battery charger This patch adds basic driver for voltage regulators and MAX 8998 MFD core. Signed-off-by: Kyungmin Park Signed-off-by: Marek Szyprowski Acked-by: Samuel Ortiz Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- include/linux/mfd/max8998-private.h | 112 ++++++++++++++++++++++++++++++++++++ include/linux/mfd/max8998.h | 78 +++++++++++++++++++++++++ 2 files changed, 190 insertions(+) create mode 100644 include/linux/mfd/max8998-private.h create mode 100644 include/linux/mfd/max8998.h (limited to 'include/linux/mfd') diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h new file mode 100644 index 000000000000..6dc75b3e2d33 --- /dev/null +++ b/include/linux/mfd/max8998-private.h @@ -0,0 +1,112 @@ +/* + * max8698.h - Voltage regulator driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electrnoics + * Kyungmin Park + * Marek Szyprowski + * + * 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 + */ + +#ifndef __LINUX_MFD_MAX8998_PRIV_H +#define __LINUX_MFD_MAX8998_PRIV_H + +/* MAX 8998 registers */ +enum { + MAX8998_REG_IRQ1, + MAX8998_REG_IRQ2, + MAX8998_REG_IRQ3, + MAX8998_REG_IRQ4, + MAX8998_REG_IRQM1, + MAX8998_REG_IRQM2, + MAX8998_REG_IRQM3, + MAX8998_REG_IRQM4, + MAX8998_REG_STATUS1, + MAX8998_REG_STATUS2, + MAX8998_REG_STATUSM1, + MAX8998_REG_STATUSM2, + MAX8998_REG_CHGR1, + MAX8998_REG_CHGR2, + MAX8998_REG_LDO_ACTIVE_DISCHARGE1, + MAX8998_REG_LDO_ACTIVE_DISCHARGE2, + MAX8998_REG_BUCK_ACTIVE_DISCHARGE3, + MAX8998_REG_ONOFF1, + MAX8998_REG_ONOFF2, + MAX8998_REG_ONOFF3, + MAX8998_REG_ONOFF4, + MAX8998_REG_BUCK1_DVSARM1, + MAX8998_REG_BUCK1_DVSARM2, + MAX8998_REG_BUCK1_DVSARM3, + MAX8998_REG_BUCK1_DVSARM4, + MAX8998_REG_BUCK2_DVSINT1, + MAX8998_REG_BUCK2_DVSINT2, + MAX8998_REG_BUCK3, + MAX8998_REG_BUCK4, + MAX8998_REG_LDO2_LDO3, + MAX8998_REG_LDO4, + MAX8998_REG_LDO5, + MAX8998_REG_LDO6, + MAX8998_REG_LDO7, + MAX8998_REG_LDO8_LDO9, + MAX8998_REG_LDO10_LDO11, + MAX8998_REG_LDO12, + MAX8998_REG_LDO13, + MAX8998_REG_LDO14, + MAX8998_REG_LDO15, + MAX8998_REG_LDO16, + MAX8998_REG_LDO17, + MAX8998_REG_BKCHR, + MAX8998_REG_LBCNFG1, + MAX8998_REG_LBCNFG2, +}; + +/** + * struct max8998_dev - max8998 master device for sub-drivers + * @dev: master device of the chip (can be used to access platform data) + * @i2c_client: i2c client private data + * @dev_read(): chip register read function + * @dev_write(): chip register write function + * @dev_update(): chip register update function + * @iolock: mutex for serializing io access + */ + +struct max8998_dev { + struct device *dev; + struct i2c_client *i2c_client; + int (*dev_read)(struct max8998_dev *max8998, u8 reg, u8 *dest); + int (*dev_write)(struct max8998_dev *max8998, u8 reg, u8 val); + int (*dev_update)(struct max8998_dev *max8998, u8 reg, u8 val, u8 mask); + struct mutex iolock; +}; + +static inline int max8998_read_reg(struct max8998_dev *max8998, u8 reg, + u8 *value) +{ + return max8998->dev_read(max8998, reg, value); +} + +static inline int max8998_write_reg(struct max8998_dev *max8998, u8 reg, + u8 value) +{ + return max8998->dev_write(max8998, reg, value); +} + +static inline int max8998_update_reg(struct max8998_dev *max8998, u8 reg, + u8 value, u8 mask) +{ + return max8998->dev_update(max8998, reg, value, mask); +} + +#endif /* __LINUX_MFD_MAX8998_PRIV_H */ diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h new file mode 100644 index 000000000000..1d3601a2d853 --- /dev/null +++ b/include/linux/mfd/max8998.h @@ -0,0 +1,78 @@ +/* + * max8698.h - Voltage regulator driver for the Maxim 8998 + * + * Copyright (C) 2009-2010 Samsung Electrnoics + * Kyungmin Park + * Marek Szyprowski + * + * 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 + */ + +#ifndef __LINUX_MFD_MAX8998_H +#define __LINUX_MFD_MAX8998_H + +#include + +/* MAX 8998 regulator ids */ +enum { + MAX8998_LDO2 = 2, + MAX8998_LDO3, + MAX8998_LDO4, + MAX8998_LDO5, + MAX8998_LDO6, + MAX8998_LDO7, + MAX8998_LDO8, + MAX8998_LDO9, + MAX8998_LDO10, + MAX8998_LDO11, + MAX8998_LDO12, + MAX8998_LDO13, + MAX8998_LDO14, + MAX8998_LDO15, + MAX8998_LDO16, + MAX8998_LDO17, + MAX8998_BUCK1, + MAX8998_BUCK2, + MAX8998_BUCK3, + MAX8998_BUCK4, + MAX8998_EN32KHZ_AP, + MAX8998_EN32KHZ_CP, + MAX8998_ENVICHG, + MAX8998_ESAFEOUT1, + MAX8998_ESAFEOUT2, +}; + +/** + * max8998_regulator_data - regulator data + * @id: regulator id + * @initdata: regulator init data (contraints, supplies, ...) + */ +struct max8998_regulator_data { + int id; + struct regulator_init_data *initdata; +}; + +/** + * struct max8998_board - packages regulator init data + * @num_regulators: number of regultors used + * @regulators: array of defined regulators + */ + +struct max8998_platform_data { + int num_regulators; + struct max8998_regulator_data *regulators; +}; + +#endif /* __LINUX_MFD_MAX8998_H */ -- cgit v1.2.2