Messages in this thread Patch in this message | | | From | Jonghwa Lee <> | Subject | [PATCH] MFD : add MAX77686 mfd driver | Date | Mon, 30 Apr 2012 17:53:42 +0900 |
| |
From: Chiwoong byun <woong.byun@samsung.com>
This driver is for MAXIM 77686 mfd chip. It contains RTC, PMIC on it. They share same I2C bus and included in this mfd driver.
Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> --- drivers/mfd/Kconfig | 11 + drivers/mfd/Makefile | 1 + drivers/mfd/max77686-irq.c | 343 ++++++++++++++++++++++++++++ drivers/mfd/max77686.c | 407 ++++++++++++++++++++++++++++++++++ include/linux/mfd/max77686-private.h | 259 +++++++++++++++++++++ include/linux/mfd/max77686.h | 137 ++++++++++++ 6 files changed, 1158 insertions(+), 0 deletions(-) create mode 100644 drivers/mfd/max77686-irq.c create mode 100644 drivers/mfd/max77686.c create mode 100644 include/linux/mfd/max77686-private.h create mode 100644 include/linux/mfd/max77686.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 13a1789..998356f 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -441,6 +441,17 @@ config MFD_MAX8998 additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX77686 + bool "Maxim Semiconductor MAX77686 PMIC Support" + depends on I2C=y && GENERIC_HARDIRQS + select MFD_CORE + help + Say yes here to support for Maxim Semiconductor MAX77686. + This is a Power Management IC with RTC on chip. + This driver provides common support for accessing the device; + additional drivers must be enabled in order to use the functionality + of the device. + config MFD_S5M_CORE bool "SAMSUNG S5M Series Support" depends on I2C=y && GENERIC_HARDIRQS diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index ddd9fa7..d93a7a6 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_MFD_MAX8925) += max8925.o obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o obj-$(CONFIG_MFD_MAX77693) += max77693.o max77693-irq.o +obj-$(CONFIG_MFD_MAX77693) += max77686.o max77686-irq.o pcf50633-objs := pcf50633-core.o pcf50633-irq.o obj-$(CONFIG_MFD_PCF50633) += pcf50633.o diff --git a/drivers/mfd/max77686-irq.c b/drivers/mfd/max77686-irq.c new file mode 100644 index 0000000..c086da3 --- /dev/null +++ b/drivers/mfd/max77686-irq.c @@ -0,0 +1,343 @@ +/* + * max77686-irq.c - Interrupt controller support for MAX77686 + * + * Copyright (C) 2012 Samsung Electronics Co.Ltd + * Chiwoong Byun <woong.byun@samsung.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-irq.c + */ + +#include <linux/err.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/gpio.h> +#include <linux/mfd/max77686.h> +#include <linux/mfd/max77686-private.h> + +#undef MAX77686_IRQ_TEST + +enum { + MAX77686_DEBUG_IRQ_INFO = 1 << 0, + MAX77686_DEBUG_IRQ_MASK = 1 << 1, + MAX77686_DEBUG_IRQ_INT = 1 << 2, +}; + +static int debug_mask = MAX77686_DEBUG_IRQ_INFO | MAX77686_DEBUG_IRQ_MASK | + MAX77686_DEBUG_IRQ_INT; + +static const u8 max77686_mask_reg[] = { + [PMIC_INT1] = MAX77686_REG_INT1MSK, + [PMIC_INT2] = MAX77686_REG_INT2MSK, + [RTC_INT] = MAX77686_RTC_INTM, +}; + +static struct i2c_client *max77686_get_i2c(struct max77686_dev *max77686, + enum max77686_irq_source src) +{ + switch (src) { + case PMIC_INT1 ... PMIC_INT2: + return max77686->i2c; + case RTC_INT: + return max77686->rtc; + default: + return ERR_PTR(-EINVAL); + } +} + +struct max77686_irq_data { + int mask; + enum max77686_irq_source group; +}; + +static const struct max77686_irq_data max77686_irqs[] = { + [MAX77686_PMICIRQ_PWRONF] = { .group = PMIC_INT1, .mask = 1 << 0 }, + [MAX77686_PMICIRQ_PWRONR] = { .group = PMIC_INT1, .mask = 1 << 1 }, + [MAX77686_PMICIRQ_JIGONBF] = { .group = PMIC_INT1, .mask = 1 << 2 }, + [MAX77686_PMICIRQ_JIGONBR] = { .group = PMIC_INT1, .mask = 1 << 3 }, + [MAX77686_PMICIRQ_ACOKBF] = { .group = PMIC_INT1, .mask = 1 << 4 }, + [MAX77686_PMICIRQ_ACOKBR] = { .group = PMIC_INT1, .mask = 1 << 5 }, + [MAX77686_PMICIRQ_ONKEY1S] = { .group = PMIC_INT1, .mask = 1 << 6 }, + [MAX77686_PMICIRQ_MRSTB] = { .group = PMIC_INT1, .mask = 1 << 7 }, + [MAX77686_PMICIRQ_140C] = { .group = PMIC_INT2, .mask = 1 << 0 }, + [MAX77686_PMICIRQ_120C] = { .group = PMIC_INT2, .mask = 1 << 1 }, + [MAX77686_RTCIRQ_RTC60S] = { .group = RTC_INT, .mask = 1 << 0 }, + [MAX77686_RTCIRQ_RTCA1] = { .group = RTC_INT, .mask = 1 << 1 }, + [MAX77686_RTCIRQ_RTCA2] = { .group = RTC_INT, .mask = 1 << 2 }, + [MAX77686_RTCIRQ_SMPL] = { .group = RTC_INT, .mask = 1 << 3 }, + [MAX77686_RTCIRQ_RTC1S] = { .group = RTC_INT, .mask = 1 << 4 }, + [MAX77686_RTCIRQ_WTSR] = { .group = RTC_INT, .mask = 1 << 5 }, +}; + +static void max77686_irq_lock(struct irq_data *data) +{ + struct max77686_dev *max77686 = irq_get_chip_data(data->irq); + + if (debug_mask & MAX77686_DEBUG_IRQ_MASK) + pr_debug("%s\n", __func__); + + mutex_lock(&max77686->irqlock); +} + +static void max77686_irq_sync_unlock(struct irq_data *data) +{ + struct max77686_dev *max77686 = irq_get_chip_data(data->irq); + int i; + + for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) { + u8 mask_reg = max77686_mask_reg[i]; + struct i2c_client *i2c = max77686_get_i2c(max77686, i); + + if (debug_mask & MAX77686_DEBUG_IRQ_MASK) + pr_debug("%s: mask_reg[%d]=0x%x, cur=0x%x\n", __func__, + i, mask_reg, max77686->irq_masks_cur[i]); + + if (mask_reg == MAX77686_REG_INVALID || + IS_ERR_OR_NULL(i2c)) + continue; + + max77686->irq_masks_cache[i] = max77686->irq_masks_cur[i]; + + max77686_write_reg(i2c, max77686_mask_reg[i], + max77686->irq_masks_cur[i]); + } + + mutex_unlock(&max77686->irqlock); +} + +static const inline struct max77686_irq_data * +irq_to_max77686_irq(struct max77686_dev *max77686, int irq) +{ + return &max77686_irqs[irq - max77686->irq_base]; +} + +static void max77686_irq_mask(struct irq_data *data) +{ + struct max77686_dev *max77686 = irq_get_chip_data(data->irq); + const struct max77686_irq_data *irq_data = irq_to_max77686_irq(max77686, + data->irq); + + max77686->irq_masks_cur[irq_data->group] |= irq_data->mask; + + if (debug_mask & MAX77686_DEBUG_IRQ_MASK) + pr_info("%s: group=%d, cur=0x%x\n", + __func__, irq_data->group, + max77686->irq_masks_cur[irq_data->group]); +} + +static void max77686_irq_unmask(struct irq_data *data) +{ + struct max77686_dev *max77686 = irq_get_chip_data(data->irq); + const struct max77686_irq_data *irq_data = irq_to_max77686_irq(max77686, + data->irq); + + max77686->irq_masks_cur[irq_data->group] &= ~irq_data->mask; + + if (debug_mask & MAX77686_DEBUG_IRQ_MASK) + pr_info("%s: group=%d, cur=0x%x\n", + __func__, irq_data->group, + max77686->irq_masks_cur[irq_data->group]); +} + +static struct irq_chip max77686_irq_chip = { + .name = "max77686", + .irq_bus_lock = max77686_irq_lock, + .irq_bus_sync_unlock = max77686_irq_sync_unlock, + .irq_mask = max77686_irq_mask, + .irq_unmask = max77686_irq_unmask, +}; + +static irqreturn_t max77686_irq_thread(int irq, void *data) +{ + struct max77686_dev *max77686 = data; + u8 irq_reg[MAX77686_IRQ_GROUP_NR] = {}; + u8 irq_src; + int ret; + int i; + + ret = max77686_read_reg(max77686->i2c, MAX77686_REG_INTSRC, &irq_src); + if (ret < 0) { + dev_err(max77686->dev, "Failed to read interrupt source: %d\n", + ret); + return IRQ_NONE; + } + + if (debug_mask & MAX77686_DEBUG_IRQ_INT) + pr_info("%s: irq_src=0x%x\n", __func__, irq_src); + + /* MAX77686_IRQSRC_RTC may be set even if there are pending at INT1/2 */ + ret = max77686_read_reg(max77686->i2c, MAX77686_REG_INT1, &irq_reg[0]); + ret = max77686_read_reg(max77686->i2c, MAX77686_REG_INT2, &irq_reg[1]); + if (ret < 0) { + dev_err(max77686->dev, "Failed to read pmic interrupt: %d\n", + ret); + return IRQ_NONE; + } + + if (debug_mask & MAX77686_DEBUG_IRQ_INT) + pr_info("%s: int1=0x%x, int2=0x%x\n", + __func__, irq_reg[PMIC_INT1], irq_reg[PMIC_INT2]); + + if (irq_src & MAX77686_IRQSRC_RTC) { +#ifdef CONFIG_RTC_DRV_MAX77686 + ret = max77686_read_reg(max77686->rtc, MAX77686_RTC_INT, + &irq_reg[RTC_INT]); +#else + ret = -ENODEV; +#endif + if (ret < 0) { + dev_err(max77686->dev, "Failed to read rtc interrupt: %d\n", + ret); + return IRQ_NONE; + } + + if (debug_mask & MAX77686_DEBUG_IRQ_INT) + pr_info("%s: rtc int=0x%x\n", __func__, + irq_reg[RTC_INT]); + } + + for (i = 0; i < MAX77686_IRQ_NR; i++) { + if (irq_reg[max77686_irqs[i].group] & max77686_irqs[i].mask) + handle_nested_irq(max77686->irq_base + i); + } + + return IRQ_HANDLED; +} + +int max77686_irq_resume(struct max77686_dev *max77686) +{ + if (max77686->irq && max77686->irq_base) + max77686_irq_thread(max77686->irq_base, max77686); + return 0; +} + +int max77686_irq_init(struct max77686_dev *max77686) +{ + int i; + int cur_irq; + int ret; + int val; +#ifdef MAX77686_IRQ_TEST + u8 irq_reg[6] = { }; + u8 irq_src; +#endif + + if (debug_mask & MAX77686_DEBUG_IRQ_INFO) + pr_info("%s+\n", __func__); + + if (!max77686->irq_gpio) { + dev_warn(max77686->dev, "No interrupt gpio specified.\n"); + max77686->irq_base = 0; + return 0; + } + + if (!max77686->irq_base) { + dev_err(max77686->dev, "No interrupt base specified.\n"); + return 0; + } + + mutex_init(&max77686->irqlock); + + max77686->irq = gpio_to_irq(max77686->irq_gpio); + ret = gpio_request(max77686->irq_gpio, "pmic_irq"); + if (ret < 0 && ret != -EBUSY) { + dev_err(max77686->dev, + "Failed to request gpio %d with ret: %d\n", + max77686->irq_gpio, ret); + return IRQ_NONE; + } + if (ret == -EBUSY) + dev_warn(max77686->dev, "gpio pmic_irq is already requested\n"); + + gpio_direction_input(max77686->irq_gpio); + val = gpio_get_value(max77686->irq_gpio); + gpio_free(max77686->irq_gpio); + + if (debug_mask & MAX77686_DEBUG_IRQ_INT) + pr_info("%s: gpio_irq=%x\n", __func__, val); + +#ifdef MAX77686_IRQ_TEST + ret = max77686_read_reg(max77686->i2c, MAX77686_REG_INTSRC, &irq_src); + if (ret < 0) { + dev_err(max77686->dev, "Failed to read interrupt source: %d\n", + ret); + return IRQ_NONE; + } + + pr_info("%s: irq_src=0x%x\n", __func__, irq_src); + + ret = max77686_bulk_read(max77686->i2c, MAX77686_REG_INT1, 6, irq_reg); + if (ret < 0) { + dev_err(max77686->dev, "Failed to read interrupt source: %d\n", + ret); + return IRQ_NONE; + } + + for (i = 0; i < 6; i++) + pr_info("%s: i[%d]=0x%x\n", __func__, i, irq_reg[i]); +#endif /* MAX77686_IRQ_TEST */ + + /* Mask individual interrupt sources */ + for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) { + struct i2c_client *i2c; + + max77686->irq_masks_cur[i] = 0xff; + max77686->irq_masks_cache[i] = 0xff; + i2c = max77686_get_i2c(max77686, i); + + if (IS_ERR_OR_NULL(i2c)) + continue; + if (max77686_mask_reg[i] == MAX77686_REG_INVALID) + continue; + + max77686_write_reg(i2c, max77686_mask_reg[i], 0xff); + } + + /* Register with genirq */ + for (i = 0; i < MAX77686_IRQ_NR; i++) { + cur_irq = i + max77686->irq_base; + irq_set_chip_data(cur_irq, max77686); + irq_set_chip_and_handler(cur_irq, &max77686_irq_chip, + handle_edge_irq); + irq_set_nested_thread(cur_irq, 1); +#ifdef CONFIG_ARM + set_irq_flags(cur_irq, IRQF_VALID); +#else + irq_set_noprobe(cur_irq); +#endif + } + + ret = request_threaded_irq(max77686->irq, NULL, max77686_irq_thread, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + "max77686-irq", max77686); + + if (ret) { + dev_err(max77686->dev, "Failed to request IRQ %d: %d\n", + max77686->irq, ret); + return ret; + } + + if (debug_mask & MAX77686_DEBUG_IRQ_INFO) + pr_info("%s-\n", __func__); + + return 0; +} + +void max77686_irq_exit(struct max77686_dev *max77686) +{ + if (max77686->irq) + free_irq(max77686->irq, max77686); +} diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c new file mode 100644 index 0000000..77b325c --- /dev/null +++ b/drivers/mfd/max77686.c @@ -0,0 +1,407 @@ +/* + * max77686.c - mfd core driver for the Maxim 77686 + * + * Copyright (C) 2012 Samsung Electronics + * Chiwoong Byun <woong.byun@samsung.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/slab.h> +#include <linux/i2c.h> +#include <linux/pm_runtime.h> +#include <linux/mutex.h> +#include <linux/mfd/core.h> +#include <linux/mfd/max77686.h> +#include <linux/mfd/max77686-private.h> +#include <linux/interrupt.h> + +#define I2C_ADDR_RTC (0x0C >> 1) + +static struct mfd_cell max77686_devs[] = { + { .name = "max77686-pmic", }, +#ifdef CONFIG_RTC_DRV_MAX77686 + { .name = "max77686-rtc", }, +#endif +}; + +int max77686_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77686->iolock); + ret = i2c_smbus_read_byte_data(i2c, reg); + mutex_unlock(&max77686->iolock); + if (ret < 0) + return ret; + + ret &= 0xff; + *dest = ret; + return 0; +} +EXPORT_SYMBOL_GPL(max77686_read_reg); + +int max77686_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77686->iolock); + ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); + mutex_unlock(&max77686->iolock); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(max77686_bulk_read); + +int max77686_write_reg(struct i2c_client *i2c, u8 reg, u8 value) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77686->iolock); + ret = i2c_smbus_write_byte_data(i2c, reg, value); + mutex_unlock(&max77686->iolock); + return ret; +} +EXPORT_SYMBOL_GPL(max77686_write_reg); + +int max77686_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77686->iolock); + ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); + mutex_unlock(&max77686->iolock); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL_GPL(max77686_bulk_write); + +int max77686_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int ret; + + mutex_lock(&max77686->iolock); + ret = i2c_smbus_read_byte_data(i2c, reg); + if (ret >= 0) { + u8 old_val = ret & 0xff; + u8 new_val = (val & mask) | (old_val & (~mask)); + ret = i2c_smbus_write_byte_data(i2c, reg, new_val); + } + mutex_unlock(&max77686->iolock); + return ret; +} +EXPORT_SYMBOL_GPL(max77686_update_reg); + +static int max77686_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max77686_dev *max77686; + struct max77686_platform_data *pdata = i2c->dev.platform_data; + u8 data; + int ret = 0; + + max77686 = kzalloc(sizeof(struct max77686_dev), GFP_KERNEL); + if (max77686 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, max77686); + max77686->dev = &i2c->dev; + max77686->i2c = i2c; + max77686->type = id->driver_data; + + if (!pdata) { + ret = -EIO; + goto err; + } + + max77686->wakeup = pdata->wakeup; + max77686->irq_gpio = pdata->irq_gpio; + max77686->irq_base = pdata->irq_base; + max77686->wtsr_smpl = pdata->wtsr_smpl; + + mutex_init(&max77686->iolock); + + if (max77686_read_reg(i2c, MAX77686_REG_DEVICE_ID, &data) < 0) { + dev_err(max77686->dev, + "device not found on this channel (this is not an error)\n"); + ret = -ENODEV; + goto err; + } else + dev_info(max77686->dev, "device found\n"); + +#ifdef CONFIG_RTC_DRV_MAX77686 + max77686->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC); + i2c_set_clientdata(max77686->rtc, max77686); +#endif + + max77686_irq_init(max77686); + + ret = mfd_add_devices(max77686->dev, -1, max77686_devs, + ARRAY_SIZE(max77686_devs), NULL, 0); + + if (ret < 0) + goto err_mfd; + + device_init_wakeup(max77686->dev, pdata->wakeup); + + return ret; + +err_mfd: + mfd_remove_devices(max77686->dev); +#ifdef CONFIG_RTC_DRV_MAX77686 + i2c_unregister_device(max77686->rtc); +#endif +err: + kfree(max77686); + return ret; +} + +static int max77686_i2c_remove(struct i2c_client *i2c) +{ + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + + mfd_remove_devices(max77686->dev); +#ifdef CONFIG_RTC_DRV_MAX77686 + i2c_unregister_device(max77686->rtc); +#endif + kfree(max77686); + + return 0; +} + +static const struct i2c_device_id max77686_i2c_id[] = { + { "max77686", TYPE_MAX77686 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max77686_i2c_id); + +#ifdef CONFIG_PM +static int max77686_suspend(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + + disable_irq(max77686->irq); + + if (device_may_wakeup(dev)) + enable_irq_wake(max77686->irq); + + return 0; +} + +static int max77686_resume(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + disable_irq_wake(max77686->irq); + + enable_irq(max77686->irq); + + return max77686_irq_resume(max77686); +} +#else +#define max77686_suspend NULL +#define max77686_resume NULL +#endif /* CONFIG_PM */ + +#ifdef CONFIG_HIBERNATION + +u8 max77686_dumpaddr_pmic[] = { + MAX77686_REG_INT1MSK, + MAX77686_REG_INT2MSK, + MAX77686_REG_ONOFF_DELAY, + MAX77686_REG_MRSTB , + /* Reserved: 0x0B-0x0F */ + MAX77686_REG_BUCK1CTRL, + MAX77686_REG_BUCK1OUT, + MAX77686_REG_BUCK2CTRL1, + MAX77686_REG_BUCK234FREQ, + MAX77686_REG_BUCK2DVS1, + MAX77686_REG_BUCK2DVS2, + MAX77686_REG_BUCK2DVS3, + MAX77686_REG_BUCK2DVS4, + MAX77686_REG_BUCK2DVS5, + MAX77686_REG_BUCK2DVS6, + MAX77686_REG_BUCK2DVS7, + MAX77686_REG_BUCK2DVS8, + MAX77686_REG_BUCK3CTRL1, + /* Reserved: 0x1D */ + MAX77686_REG_BUCK3DVS1, + MAX77686_REG_BUCK3DVS2, + MAX77686_REG_BUCK3DVS3, + MAX77686_REG_BUCK3DVS4, + MAX77686_REG_BUCK3DVS5, + MAX77686_REG_BUCK3DVS6, + MAX77686_REG_BUCK3DVS7, + MAX77686_REG_BUCK3DVS8, + MAX77686_REG_BUCK4CTRL1, + /* Reserved: 0x27 */ + MAX77686_REG_BUCK4DVS1, + MAX77686_REG_BUCK4DVS2, + MAX77686_REG_BUCK4DVS3, + MAX77686_REG_BUCK4DVS4, + MAX77686_REG_BUCK4DVS5, + MAX77686_REG_BUCK4DVS6, + MAX77686_REG_BUCK4DVS7, + MAX77686_REG_BUCK4DVS8, + MAX77686_REG_BUCK5CTRL, + MAX77686_REG_BUCK5OUT, + MAX77686_REG_BUCK6CTRL, + MAX77686_REG_BUCK6OUT, + MAX77686_REG_BUCK7CTRL, + MAX77686_REG_BUCK7OUT, + MAX77686_REG_BUCK8CTRL, + MAX77686_REG_BUCK8OUT, + MAX77686_REG_BUCK9CTRL, + MAX77686_REG_BUCK9OUT, + /* Reserved: 0x3A-0x3F */ + MAX77686_REG_LDO1CTRL1 , + MAX77686_REG_LDO2CTRL1 , + MAX77686_REG_LDO3CTRL1 , + MAX77686_REG_LDO4CTRL1 , + MAX77686_REG_LDO5CTRL1 , + MAX77686_REG_LDO6CTRL1, + MAX77686_REG_LDO7CTRL1 , + MAX77686_REG_LDO8CTRL1 , + MAX77686_REG_LDO9CTRL1 , + MAX77686_REG_LDO10CTRL1, + MAX77686_REG_LDO11CTRL1, + MAX77686_REG_LDO12CTRL1, + MAX77686_REG_LDO13CTRL1, + MAX77686_REG_LDO14CTRL1, + MAX77686_REG_LDO15CTRL1, + MAX77686_REG_LDO16CTRL1, + MAX77686_REG_LDO17CTRL1, + MAX77686_REG_LDO18CTRL1, + MAX77686_REG_LDO19CTRL1, + MAX77686_REG_LDO20CTRL1, + MAX77686_REG_LDO21CTRL1, + MAX77686_REG_LDO22CTRL1, + MAX77686_REG_LDO23CTRL1, + MAX77686_REG_LDO24CTRL1, + MAX77686_REG_LDO25CTRL1, + MAX77686_REG_LDO26CTRL1, + /* Reserved: 0x5A-0x5F */ + MAX77686_REG_LDO1CTRL2 , + MAX77686_REG_LDO2CTRL2 , + MAX77686_REG_LDO3CTRL2 , + MAX77686_REG_LDO4CTRL2 , + MAX77686_REG_LDO5CTRL2 , + MAX77686_REG_LDO6CTRL2, + MAX77686_REG_LDO7CTRL2 , + MAX77686_REG_LDO8CTRL2 , + MAX77686_REG_LDO9CTRL2 , + MAX77686_REG_LDO10CTRL2, + MAX77686_REG_LDO11CTRL2, + MAX77686_REG_LDO12CTRL2, + MAX77686_REG_LDO13CTRL2, + MAX77686_REG_LDO14CTRL2, + MAX77686_REG_LDO15CTRL2, + MAX77686_REG_LDO16CTRL2, + MAX77686_REG_LDO17CTRL2, + MAX77686_REG_LDO18CTRL2, + MAX77686_REG_LDO19CTRL2, + MAX77686_REG_LDO20CTRL2, + MAX77686_REG_LDO21CTRL2, + MAX77686_REG_LDO22CTRL2, + MAX77686_REG_LDO23CTRL2, + MAX77686_REG_LDO24CTRL2, + MAX77686_REG_LDO25CTRL2, + MAX77686_REG_LDO26CTRL2, + MAX77686_REG_BBAT_CHG, + MAX77686_REG_32KHZ, +}; + +static int max77686_freeze(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int i; + + for (i = 0; i < ARRAY_SIZE(max77686_dumpaddr_pmic); i++) + max77686_read_reg(i2c, max77686_dumpaddr_pmic[i], + &max77686->reg_dump[i]); + + disable_irq(max77686->irq); + + return 0; +} + +static int max77686_restore(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77686_dev *max77686 = i2c_get_clientdata(i2c); + int i; + + enable_irq(max77686->irq); + + for (i = 0; i < ARRAY_SIZE(max77686_dumpaddr_pmic); i++) + max77686_write_reg(i2c, max77686_dumpaddr_pmic[i], + max77686->reg_dump[i]); + + return 0; +} +#endif + +const struct dev_pm_ops max77686_pm = { + .suspend = max77686_suspend, + .resume = max77686_resume, +#ifdef CONFIG_HIBERNATION + .freeze = max77686_freeze, + .thaw = max77686_restore, + .restore = max77686_restore, +#endif +}; + +static struct i2c_driver max77686_i2c_driver = { + .driver = { + .name = "max77686", + .owner = THIS_MODULE, + .pm = &max77686_pm, + }, + .probe = max77686_i2c_probe, + .remove = max77686_i2c_remove, + .id_table = max77686_i2c_id, +}; + +static int __init max77686_i2c_init(void) +{ + return i2c_add_driver(&max77686_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(max77686_i2c_init); + +static void __exit max77686_i2c_exit(void) +{ + i2c_del_driver(&max77686_i2c_driver); +} +module_exit(max77686_i2c_exit); + +MODULE_DESCRIPTION("MAXIM 77686 multi-function core driver"); +MODULE_AUTHOR("Chiwoong Byun <woong.byun@samsung.com>"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max77686-private.h b/include/linux/mfd/max77686-private.h new file mode 100644 index 0000000..a44a743 --- /dev/null +++ b/include/linux/mfd/max77686-private.h @@ -0,0 +1,259 @@ +/* + * max77686.h - Voltage regulator driver for the Maxim 77686 + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun <woong.byun@samsung.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 + */ + +#ifndef __LINUX_MFD_MAX77686_PRIV_H +#define __LINUX_MFD_MAX77686_PRIV_H + +#include <linux/i2c.h> + +#define MAX77686_REG_INVALID (0xff) + +enum max77686_pmic_reg { + MAX77686_REG_DEVICE_ID = 0x00, + MAX77686_REG_INTSRC = 0x01, + MAX77686_REG_INT1 = 0x02, + MAX77686_REG_INT2 = 0x03, + + MAX77686_REG_INT1MSK = 0x04, + MAX77686_REG_INT2MSK = 0x05, + + MAX77686_REG_STATUS1 = 0x06, + MAX77686_REG_STATUS2 = 0x07, + + MAX77686_REG_PWRON = 0x08, + MAX77686_REG_ONOFF_DELAY = 0x09, + MAX77686_REG_MRSTB = 0x0A, + /* Reserved: 0x0B-0x0F */ + + MAX77686_REG_BUCK1CTRL = 0x10, + MAX77686_REG_BUCK1OUT = 0x11, + MAX77686_REG_BUCK2CTRL1 = 0x12, + MAX77686_REG_BUCK234FREQ = 0x13, + MAX77686_REG_BUCK2DVS1 = 0x14, + MAX77686_REG_BUCK2DVS2 = 0x15, + MAX77686_REG_BUCK2DVS3 = 0x16, + MAX77686_REG_BUCK2DVS4 = 0x17, + MAX77686_REG_BUCK2DVS5 = 0x18, + MAX77686_REG_BUCK2DVS6 = 0x19, + MAX77686_REG_BUCK2DVS7 = 0x1A, + MAX77686_REG_BUCK2DVS8 = 0x1B, + MAX77686_REG_BUCK3CTRL1 = 0x1C, + /* Reserved: 0x1D */ + MAX77686_REG_BUCK3DVS1 = 0x1E, + MAX77686_REG_BUCK3DVS2 = 0x1F, + MAX77686_REG_BUCK3DVS3 = 0x20, + MAX77686_REG_BUCK3DVS4 = 0x21, + MAX77686_REG_BUCK3DVS5 = 0x22, + MAX77686_REG_BUCK3DVS6 = 0x23, + MAX77686_REG_BUCK3DVS7 = 0x24, + MAX77686_REG_BUCK3DVS8 = 0x25, + MAX77686_REG_BUCK4CTRL1 = 0x26, + /* Reserved: 0x27 */ + MAX77686_REG_BUCK4DVS1 = 0x28, + MAX77686_REG_BUCK4DVS2 = 0x29, + MAX77686_REG_BUCK4DVS3 = 0x2A, + MAX77686_REG_BUCK4DVS4 = 0x2B, + MAX77686_REG_BUCK4DVS5 = 0x2C, + MAX77686_REG_BUCK4DVS6 = 0x2D, + MAX77686_REG_BUCK4DVS7 = 0x2E, + MAX77686_REG_BUCK4DVS8 = 0x2F, + MAX77686_REG_BUCK5CTRL = 0x30, + MAX77686_REG_BUCK5OUT = 0x31, + MAX77686_REG_BUCK6CTRL = 0x32, + MAX77686_REG_BUCK6OUT = 0x33, + MAX77686_REG_BUCK7CTRL = 0x34, + MAX77686_REG_BUCK7OUT = 0x35, + MAX77686_REG_BUCK8CTRL = 0x36, + MAX77686_REG_BUCK8OUT = 0x37, + MAX77686_REG_BUCK9CTRL = 0x38, + MAX77686_REG_BUCK9OUT = 0x39, + /* Reserved: 0x3A-0x3F */ + + MAX77686_REG_LDO1CTRL1 = 0x40, + MAX77686_REG_LDO2CTRL1 = 0x41, + MAX77686_REG_LDO3CTRL1 = 0x42, + MAX77686_REG_LDO4CTRL1 = 0x43, + MAX77686_REG_LDO5CTRL1 = 0x44, + MAX77686_REG_LDO6CTRL1 = 0x45, + MAX77686_REG_LDO7CTRL1 = 0x46, + MAX77686_REG_LDO8CTRL1 = 0x47, + MAX77686_REG_LDO9CTRL1 = 0x48, + MAX77686_REG_LDO10CTRL1 = 0x49, + MAX77686_REG_LDO11CTRL1 = 0x4A, + MAX77686_REG_LDO12CTRL1 = 0x4B, + MAX77686_REG_LDO13CTRL1 = 0x4C, + MAX77686_REG_LDO14CTRL1 = 0x4D, + MAX77686_REG_LDO15CTRL1 = 0x4E, + MAX77686_REG_LDO16CTRL1 = 0x4F, + MAX77686_REG_LDO17CTRL1 = 0x50, + MAX77686_REG_LDO18CTRL1 = 0x51, + MAX77686_REG_LDO19CTRL1 = 0x52, + MAX77686_REG_LDO20CTRL1 = 0x53, + MAX77686_REG_LDO21CTRL1 = 0x54, + MAX77686_REG_LDO22CTRL1 = 0x55, + MAX77686_REG_LDO23CTRL1 = 0x56, + MAX77686_REG_LDO24CTRL1 = 0x57, + MAX77686_REG_LDO25CTRL1 = 0x58, + MAX77686_REG_LDO26CTRL1 = 0x59, + /* Reserved: 0x5A-0x5F */ + MAX77686_REG_LDO1CTRL2 = 0x60, + MAX77686_REG_LDO2CTRL2 = 0x61, + MAX77686_REG_LDO3CTRL2 = 0x62, + MAX77686_REG_LDO4CTRL2 = 0x63, + MAX77686_REG_LDO5CTRL2 = 0x64, + MAX77686_REG_LDO6CTRL2 = 0x65, + MAX77686_REG_LDO7CTRL2 = 0x66, + MAX77686_REG_LDO8CTRL2 = 0x67, + MAX77686_REG_LDO9CTRL2 = 0x68, + MAX77686_REG_LDO10CTRL2 = 0x69, + MAX77686_REG_LDO11CTRL2 = 0x6A, + MAX77686_REG_LDO12CTRL2 = 0x6B, + MAX77686_REG_LDO13CTRL2 = 0x6C, + MAX77686_REG_LDO14CTRL2 = 0x6D, + MAX77686_REG_LDO15CTRL2 = 0x6E, + MAX77686_REG_LDO16CTRL2 = 0x6F, + MAX77686_REG_LDO17CTRL2 = 0x70, + MAX77686_REG_LDO18CTRL2 = 0x71, + MAX77686_REG_LDO19CTRL2 = 0x72, + MAX77686_REG_LDO20CTRL2 = 0x73, + MAX77686_REG_LDO21CTRL2 = 0x74, + MAX77686_REG_LDO22CTRL2 = 0x75, + MAX77686_REG_LDO23CTRL2 = 0x76, + MAX77686_REG_LDO24CTRL2 = 0x77, + MAX77686_REG_LDO25CTRL2 = 0x78, + MAX77686_REG_LDO26CTRL2 = 0x79, + /* Reserved: 0x7A-0x7D */ + + MAX77686_REG_BBAT_CHG = 0x7E, + MAX77686_REG_32KHZ = 0x7F, + + MAX77686_REG_PMIC_END = 0x80, +}; + +enum max77686_rtc_reg { + MAX77686_RTC_INT = 0x00, + MAX77686_RTC_INTM = 0x01, + MAX77686_RTC_CONTROLM = 0x02, + MAX77686_RTC_CONTROL = 0x03, + MAX77686_RTC_UPDATE0 = 0x04, + /* Reserved: 0x5 */ + MAX77686_WTSR_SMPL_CNTL = 0x06, + MAX77686_RTC_SEC = 0x07, + MAX77686_RTC_MIN = 0x08, + MAX77686_RTC_HOUR = 0x09, + MAX77686_RTC_WEEKDAY = 0x0A, + MAX77686_RTC_MONTH = 0x0B, + MAX77686_RTC_YEAR = 0x0C, + MAX77686_RTC_DATE = 0x0D, + MAX77686_ALARM1_SEC = 0x0E, + MAX77686_ALARM1_MIN = 0x0F, + MAX77686_ALARM1_HOUR = 0x10, + MAX77686_ALARM1_WEEKDAY = 0x11, + MAX77686_ALARM1_MONTH = 0x12, + MAX77686_ALARM1_YEAR = 0x13, + MAX77686_ALARM1_DATE = 0x14, + MAX77686_ALARM2_SEC = 0x15, + MAX77686_ALARM2_MIN = 0x16, + MAX77686_ALARM2_HOUR = 0x17, + MAX77686_ALARM2_WEEKDAY = 0x18, + MAX77686_ALARM2_MONTH = 0x19, + MAX77686_ALARM2_YEAR = 0x1A, + MAX77686_ALARM2_DATE = 0x1B, +}; + +#define MAX77686_IRQSRC_PMIC (0) +#define MAX77686_IRQSRC_RTC (1 << 0) + +#define MAX77686_REG_RAMP_RATE_100MV (0x3<<6) +#define MAX77686_REG_RAMP_RATE_55MV (0x2<<6) +#define MAX77686_REG_RAMP_RATE_27MV (0x1<<6) +#define MAX77686_REG_RAMP_RATE_13MV (0x0<<6) + +enum max77686_irq_source { + PMIC_INT1 = 0, + PMIC_INT2, + RTC_INT, + + MAX77686_IRQ_GROUP_NR, +}; + +enum max77686_irq { + MAX77686_PMICIRQ_PWRONF, + MAX77686_PMICIRQ_PWRONR, + MAX77686_PMICIRQ_JIGONBF, + MAX77686_PMICIRQ_JIGONBR, + MAX77686_PMICIRQ_ACOKBF, + MAX77686_PMICIRQ_ACOKBR, + MAX77686_PMICIRQ_ONKEY1S, + MAX77686_PMICIRQ_MRSTB, + + MAX77686_PMICIRQ_140C, + MAX77686_PMICIRQ_120C, + + MAX77686_RTCIRQ_RTC60S, + MAX77686_RTCIRQ_RTCA1, + MAX77686_RTCIRQ_RTCA2, + MAX77686_RTCIRQ_SMPL, + MAX77686_RTCIRQ_RTC1S, + MAX77686_RTCIRQ_WTSR, + + MAX77686_IRQ_NR, +}; + +struct max77686_dev { + struct device *dev; + struct i2c_client *i2c; /* 0xcc / PMIC, Battery Control, and FLASH */ + struct i2c_client *rtc; /* slave addr 0x0c */ + struct mutex iolock; + + int type; + + int irq; + int irq_gpio; + int irq_base; + bool wakeup; + struct mutex irqlock; + int irq_masks_cur[MAX77686_IRQ_GROUP_NR]; + int irq_masks_cache[MAX77686_IRQ_GROUP_NR]; + int wtsr_smpl; + +#ifdef CONFIG_HIBERNATION + u8 reg_dump[MAX77686_REG_PMIC_END]; +#endif +}; + +enum max77686_types { + TYPE_MAX77686, +}; + +extern int max77686_irq_init(struct max77686_dev *max77686); +extern void max77686_irq_exit(struct max77686_dev *max77686); +extern int max77686_irq_resume(struct max77686_dev *max77686); + +extern int max77686_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest); +extern int max77686_bulk_read(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max77686_write_reg(struct i2c_client *i2c, u8 reg, u8 value); +extern int max77686_bulk_write(struct i2c_client *i2c, u8 reg, int count, + u8 *buf); +extern int max77686_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask); + +#endif /* __LINUX_MFD_MAX77686_PRIV_H */ diff --git a/include/linux/mfd/max77686.h b/include/linux/mfd/max77686.h new file mode 100644 index 0000000..9dc81f0 --- /dev/null +++ b/include/linux/mfd/max77686.h @@ -0,0 +1,137 @@ +/* + * max77686.h - Driver for the Maxim 77686 + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun <woong.byun@samsung.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.h + * + * MAX77686 has PMIC, RTC devices. + * The devices share the same I2C bus and included in + * this mfd driver. + */ + +#ifndef __LINUX_MFD_MAX77686_H +#define __LINUX_MFD_MAX77686_H + +#include <linux/regulator/consumer.h> + +#define MAX77686_SMPL_ENABLE (0x1) +#define MAX77686_WTSR_ENABLE (0x2) + +/* MAX77686 regulator IDs */ +enum max77686_regulators { + MAX77686_LDO1 = 0, + MAX77686_LDO2, + MAX77686_LDO3, + MAX77686_LDO4, + MAX77686_LDO5, + MAX77686_LDO6, + MAX77686_LDO7, + MAX77686_LDO8, + MAX77686_LDO9, + MAX77686_LDO10, + MAX77686_LDO11, + MAX77686_LDO12, + MAX77686_LDO13, + MAX77686_LDO14, + MAX77686_LDO15, + MAX77686_LDO16, + MAX77686_LDO17, + MAX77686_LDO18, + MAX77686_LDO19, + MAX77686_LDO20, + MAX77686_LDO21, + MAX77686_LDO22, + MAX77686_LDO23, + MAX77686_LDO24, + MAX77686_LDO25, + MAX77686_LDO26, + MAX77686_BUCK1, + MAX77686_BUCK2, + MAX77686_BUCK3, + MAX77686_BUCK4, + MAX77686_BUCK5, + MAX77686_BUCK6, + MAX77686_BUCK7, + MAX77686_BUCK8, + MAX77686_BUCK9, + MAX77686_EN32KHZ_AP, + MAX77686_EN32KHZ_CP, + MAX77686_P32KH, + + MAX77686_REG_MAX, +}; + +struct max77686_regulator_data { + int id; + struct regulator_init_data *initdata; +}; + +enum max77686_opmode { + MAX77686_OPMODE_NORMAL, + MAX77686_OPMODE_LP, + MAX77686_OPMODE_STANDBY, +}; + +enum max77686_ramp_rate { + MAX77686_RAMP_RATE_100MV, + MAX77686_RAMP_RATE_13MV, + MAX77686_RAMP_RATE_27MV, + MAX77686_RAMP_RATE_55MV, +}; + +struct max77686_opmode_data { + int id; + int mode; +}; + +struct max77686_buck234_gpio_data { + int gpio; + int data; +}; + +struct max77686_platform_data { + /* IRQ */ + int irq_gpio; + int irq_base; + int ono; + int wakeup; + + /* ---- PMIC ---- */ + struct max77686_regulator_data *regulators; + int num_regulators; + int has_full_constraints; + + struct max77686_opmode_data *opmode_data; + int ramp_rate; + int wtsr_smpl; + + /* + * GPIO-DVS feature is not enabled with the current version of + * MAX77686 driver. Buck2/3/4_voltages[0] is used as the default + * voltage at probe. DVS/SELB gpios are set as OUTPUT-LOW. + */ + struct max77686_buck234_gpio_data buck234_gpio_dvs[3]; + /* GPIO of [0]DVS1, [1]DVS2, [2]DVS3 */ + int buck234_gpio_selb[3]; /* [0]SELB2, [1]SELB3, [2]SELB4 */ + unsigned int buck2_voltage[8]; /* buckx_voltage in uV */ + unsigned int buck3_voltage[8]; + unsigned int buck4_voltage[8]; +}; + +#endif /* __LINUX_MFD_MAX77686_H */ -- 1.7.4.1
| |