diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mfd/da903x.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mfd/da903x.c | 582 |
1 files changed, 0 insertions, 582 deletions
diff --git a/ANDROID_3.4.5/drivers/mfd/da903x.c b/ANDROID_3.4.5/drivers/mfd/da903x.c deleted file mode 100644 index 1924b857..00000000 --- a/ANDROID_3.4.5/drivers/mfd/da903x.c +++ /dev/null @@ -1,582 +0,0 @@ -/* - * Base driver for Dialog Semiconductor DA9030/DA9034 - * - * Copyright (C) 2008 Compulab, Ltd. - * Mike Rapoport <mike@compulab.co.il> - * - * Copyright (C) 2006-2008 Marvell International Ltd. - * Eric Miao <eric.miao@marvell.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/platform_device.h> -#include <linux/i2c.h> -#include <linux/mfd/da903x.h> -#include <linux/slab.h> - -#define DA9030_CHIP_ID 0x00 -#define DA9030_EVENT_A 0x01 -#define DA9030_EVENT_B 0x02 -#define DA9030_EVENT_C 0x03 -#define DA9030_STATUS 0x04 -#define DA9030_IRQ_MASK_A 0x05 -#define DA9030_IRQ_MASK_B 0x06 -#define DA9030_IRQ_MASK_C 0x07 -#define DA9030_SYS_CTRL_A 0x08 -#define DA9030_SYS_CTRL_B 0x09 -#define DA9030_FAULT_LOG 0x0a - -#define DA9034_CHIP_ID 0x00 -#define DA9034_EVENT_A 0x01 -#define DA9034_EVENT_B 0x02 -#define DA9034_EVENT_C 0x03 -#define DA9034_EVENT_D 0x04 -#define DA9034_STATUS_A 0x05 -#define DA9034_STATUS_B 0x06 -#define DA9034_IRQ_MASK_A 0x07 -#define DA9034_IRQ_MASK_B 0x08 -#define DA9034_IRQ_MASK_C 0x09 -#define DA9034_IRQ_MASK_D 0x0a -#define DA9034_SYS_CTRL_A 0x0b -#define DA9034_SYS_CTRL_B 0x0c -#define DA9034_FAULT_LOG 0x0d - -struct da903x_chip; - -struct da903x_chip_ops { - int (*init_chip)(struct da903x_chip *); - int (*unmask_events)(struct da903x_chip *, unsigned int events); - int (*mask_events)(struct da903x_chip *, unsigned int events); - int (*read_events)(struct da903x_chip *, unsigned int *events); - int (*read_status)(struct da903x_chip *, unsigned int *status); -}; - -struct da903x_chip { - struct i2c_client *client; - struct device *dev; - struct da903x_chip_ops *ops; - - int type; - uint32_t events_mask; - - struct mutex lock; - struct work_struct irq_work; - - struct blocking_notifier_head notifier_list; -}; - -static inline int __da903x_read(struct i2c_client *client, - int reg, uint8_t *val) -{ - int ret; - - ret = i2c_smbus_read_byte_data(client, reg); - if (ret < 0) { - dev_err(&client->dev, "failed reading at 0x%02x\n", reg); - return ret; - } - - *val = (uint8_t)ret; - return 0; -} - -static inline int __da903x_reads(struct i2c_client *client, int reg, - int len, uint8_t *val) -{ - int ret; - - ret = i2c_smbus_read_i2c_block_data(client, reg, len, val); - if (ret < 0) { - dev_err(&client->dev, "failed reading from 0x%02x\n", reg); - return ret; - } - return 0; -} - -static inline int __da903x_write(struct i2c_client *client, - int reg, uint8_t val) -{ - int ret; - - ret = i2c_smbus_write_byte_data(client, reg, val); - if (ret < 0) { - dev_err(&client->dev, "failed writing 0x%02x to 0x%02x\n", - val, reg); - return ret; - } - return 0; -} - -static inline int __da903x_writes(struct i2c_client *client, int reg, - int len, uint8_t *val) -{ - int ret; - - ret = i2c_smbus_write_i2c_block_data(client, reg, len, val); - if (ret < 0) { - dev_err(&client->dev, "failed writings to 0x%02x\n", reg); - return ret; - } - return 0; -} - -int da903x_register_notifier(struct device *dev, struct notifier_block *nb, - unsigned int events) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - - chip->ops->unmask_events(chip, events); - return blocking_notifier_chain_register(&chip->notifier_list, nb); -} -EXPORT_SYMBOL_GPL(da903x_register_notifier); - -int da903x_unregister_notifier(struct device *dev, struct notifier_block *nb, - unsigned int events) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - - chip->ops->mask_events(chip, events); - return blocking_notifier_chain_unregister(&chip->notifier_list, nb); -} -EXPORT_SYMBOL_GPL(da903x_unregister_notifier); - -int da903x_write(struct device *dev, int reg, uint8_t val) -{ - return __da903x_write(to_i2c_client(dev), reg, val); -} -EXPORT_SYMBOL_GPL(da903x_write); - -int da903x_writes(struct device *dev, int reg, int len, uint8_t *val) -{ - return __da903x_writes(to_i2c_client(dev), reg, len, val); -} -EXPORT_SYMBOL_GPL(da903x_writes); - -int da903x_read(struct device *dev, int reg, uint8_t *val) -{ - return __da903x_read(to_i2c_client(dev), reg, val); -} -EXPORT_SYMBOL_GPL(da903x_read); - -int da903x_reads(struct device *dev, int reg, int len, uint8_t *val) -{ - return __da903x_reads(to_i2c_client(dev), reg, len, val); -} -EXPORT_SYMBOL_GPL(da903x_reads); - -int da903x_set_bits(struct device *dev, int reg, uint8_t bit_mask) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - uint8_t reg_val; - int ret = 0; - - mutex_lock(&chip->lock); - - ret = __da903x_read(chip->client, reg, ®_val); - if (ret) - goto out; - - if ((reg_val & bit_mask) != bit_mask) { - reg_val |= bit_mask; - ret = __da903x_write(chip->client, reg, reg_val); - } -out: - mutex_unlock(&chip->lock); - return ret; -} -EXPORT_SYMBOL_GPL(da903x_set_bits); - -int da903x_clr_bits(struct device *dev, int reg, uint8_t bit_mask) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - uint8_t reg_val; - int ret = 0; - - mutex_lock(&chip->lock); - - ret = __da903x_read(chip->client, reg, ®_val); - if (ret) - goto out; - - if (reg_val & bit_mask) { - reg_val &= ~bit_mask; - ret = __da903x_write(chip->client, reg, reg_val); - } -out: - mutex_unlock(&chip->lock); - return ret; -} -EXPORT_SYMBOL_GPL(da903x_clr_bits); - -int da903x_update(struct device *dev, int reg, uint8_t val, uint8_t mask) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - uint8_t reg_val; - int ret = 0; - - mutex_lock(&chip->lock); - - ret = __da903x_read(chip->client, reg, ®_val); - if (ret) - goto out; - - if ((reg_val & mask) != val) { - reg_val = (reg_val & ~mask) | val; - ret = __da903x_write(chip->client, reg, reg_val); - } -out: - mutex_unlock(&chip->lock); - return ret; -} -EXPORT_SYMBOL_GPL(da903x_update); - -int da903x_query_status(struct device *dev, unsigned int sbits) -{ - struct da903x_chip *chip = dev_get_drvdata(dev); - unsigned int status = 0; - - chip->ops->read_status(chip, &status); - return ((status & sbits) == sbits); -} -EXPORT_SYMBOL(da903x_query_status); - -static int __devinit da9030_init_chip(struct da903x_chip *chip) -{ - uint8_t chip_id; - int err; - - err = __da903x_read(chip->client, DA9030_CHIP_ID, &chip_id); - if (err) - return err; - - err = __da903x_write(chip->client, DA9030_SYS_CTRL_A, 0xE8); - if (err) - return err; - - dev_info(chip->dev, "DA9030 (CHIP ID: 0x%02x) detected\n", chip_id); - return 0; -} - -static int da9030_unmask_events(struct da903x_chip *chip, unsigned int events) -{ - uint8_t v[3]; - - chip->events_mask &= ~events; - - v[0] = (chip->events_mask & 0xff); - v[1] = (chip->events_mask >> 8) & 0xff; - v[2] = (chip->events_mask >> 16) & 0xff; - - return __da903x_writes(chip->client, DA9030_IRQ_MASK_A, 3, v); -} - -static int da9030_mask_events(struct da903x_chip *chip, unsigned int events) -{ - uint8_t v[3]; - - chip->events_mask |= events; - - v[0] = (chip->events_mask & 0xff); - v[1] = (chip->events_mask >> 8) & 0xff; - v[2] = (chip->events_mask >> 16) & 0xff; - - return __da903x_writes(chip->client, DA9030_IRQ_MASK_A, 3, v); -} - -static int da9030_read_events(struct da903x_chip *chip, unsigned int *events) -{ - uint8_t v[3] = {0, 0, 0}; - int ret; - - ret = __da903x_reads(chip->client, DA9030_EVENT_A, 3, v); - if (ret < 0) - return ret; - - *events = (v[2] << 16) | (v[1] << 8) | v[0]; - return 0; -} - -static int da9030_read_status(struct da903x_chip *chip, unsigned int *status) -{ - return __da903x_read(chip->client, DA9030_STATUS, (uint8_t *)status); -} - -static int da9034_init_chip(struct da903x_chip *chip) -{ - uint8_t chip_id; - int err; - - err = __da903x_read(chip->client, DA9034_CHIP_ID, &chip_id); - if (err) - return err; - - err = __da903x_write(chip->client, DA9034_SYS_CTRL_A, 0xE8); - if (err) - return err; - - /* avoid SRAM power off during sleep*/ - __da903x_write(chip->client, 0x10, 0x07); - __da903x_write(chip->client, 0x11, 0xff); - __da903x_write(chip->client, 0x12, 0xff); - - /* Enable the ONKEY power down functionality */ - __da903x_write(chip->client, DA9034_SYS_CTRL_B, 0x20); - __da903x_write(chip->client, DA9034_SYS_CTRL_A, 0x60); - - /* workaround to make LEDs work */ - __da903x_write(chip->client, 0x90, 0x01); - __da903x_write(chip->client, 0xB0, 0x08); - - /* make ADTV1 and SDTV1 effective */ - __da903x_write(chip->client, 0x20, 0x00); - - dev_info(chip->dev, "DA9034 (CHIP ID: 0x%02x) detected\n", chip_id); - return 0; -} - -static int da9034_unmask_events(struct da903x_chip *chip, unsigned int events) -{ - uint8_t v[4]; - - chip->events_mask &= ~events; - - v[0] = (chip->events_mask & 0xff); - v[1] = (chip->events_mask >> 8) & 0xff; - v[2] = (chip->events_mask >> 16) & 0xff; - v[3] = (chip->events_mask >> 24) & 0xff; - - return __da903x_writes(chip->client, DA9034_IRQ_MASK_A, 4, v); -} - -static int da9034_mask_events(struct da903x_chip *chip, unsigned int events) -{ - uint8_t v[4]; - - chip->events_mask |= events; - - v[0] = (chip->events_mask & 0xff); - v[1] = (chip->events_mask >> 8) & 0xff; - v[2] = (chip->events_mask >> 16) & 0xff; - v[3] = (chip->events_mask >> 24) & 0xff; - - return __da903x_writes(chip->client, DA9034_IRQ_MASK_A, 4, v); -} - -static int da9034_read_events(struct da903x_chip *chip, unsigned int *events) -{ - uint8_t v[4] = {0, 0, 0, 0}; - int ret; - - ret = __da903x_reads(chip->client, DA9034_EVENT_A, 4, v); - if (ret < 0) - return ret; - - *events = (v[3] << 24) | (v[2] << 16) | (v[1] << 8) | v[0]; - return 0; -} - -static int da9034_read_status(struct da903x_chip *chip, unsigned int *status) -{ - uint8_t v[2] = {0, 0}; - int ret = 0; - - ret = __da903x_reads(chip->client, DA9034_STATUS_A, 2, v); - if (ret) - return ret; - - *status = (v[1] << 8) | v[0]; - return 0; -} - -static void da903x_irq_work(struct work_struct *work) -{ - struct da903x_chip *chip = - container_of(work, struct da903x_chip, irq_work); - unsigned int events = 0; - - while (1) { - if (chip->ops->read_events(chip, &events)) - break; - - events &= ~chip->events_mask; - if (events == 0) - break; - - blocking_notifier_call_chain( - &chip->notifier_list, events, NULL); - } - enable_irq(chip->client->irq); -} - -static irqreturn_t da903x_irq_handler(int irq, void *data) -{ - struct da903x_chip *chip = data; - - disable_irq_nosync(irq); - (void)schedule_work(&chip->irq_work); - - return IRQ_HANDLED; -} - -static struct da903x_chip_ops da903x_ops[] = { - [0] = { - .init_chip = da9030_init_chip, - .unmask_events = da9030_unmask_events, - .mask_events = da9030_mask_events, - .read_events = da9030_read_events, - .read_status = da9030_read_status, - }, - [1] = { - .init_chip = da9034_init_chip, - .unmask_events = da9034_unmask_events, - .mask_events = da9034_mask_events, - .read_events = da9034_read_events, - .read_status = da9034_read_status, - } -}; - -static const struct i2c_device_id da903x_id_table[] = { - { "da9030", 0 }, - { "da9034", 1 }, - { }, -}; -MODULE_DEVICE_TABLE(i2c, da903x_id_table); - -static int __remove_subdev(struct device *dev, void *unused) -{ - platform_device_unregister(to_platform_device(dev)); - return 0; -} - -static int da903x_remove_subdevs(struct da903x_chip *chip) -{ - return device_for_each_child(chip->dev, NULL, __remove_subdev); -} - -static int __devinit da903x_add_subdevs(struct da903x_chip *chip, - struct da903x_platform_data *pdata) -{ - struct da903x_subdev_info *subdev; - struct platform_device *pdev; - int i, ret = 0; - - for (i = 0; i < pdata->num_subdevs; i++) { - subdev = &pdata->subdevs[i]; - - pdev = platform_device_alloc(subdev->name, subdev->id); - if (!pdev) { - ret = -ENOMEM; - goto failed; - } - - pdev->dev.parent = chip->dev; - pdev->dev.platform_data = subdev->platform_data; - - ret = platform_device_add(pdev); - if (ret) { - platform_device_put(pdev); - goto failed; - } - } - return 0; - -failed: - da903x_remove_subdevs(chip); - return ret; -} - -static int __devinit da903x_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct da903x_platform_data *pdata = client->dev.platform_data; - struct da903x_chip *chip; - unsigned int tmp; - int ret; - - chip = kzalloc(sizeof(struct da903x_chip), GFP_KERNEL); - if (chip == NULL) - return -ENOMEM; - - chip->client = client; - chip->dev = &client->dev; - chip->ops = &da903x_ops[id->driver_data]; - - mutex_init(&chip->lock); - INIT_WORK(&chip->irq_work, da903x_irq_work); - BLOCKING_INIT_NOTIFIER_HEAD(&chip->notifier_list); - - i2c_set_clientdata(client, chip); - - ret = chip->ops->init_chip(chip); - if (ret) - goto out_free_chip; - - /* mask and clear all IRQs */ - chip->events_mask = 0xffffffff; - chip->ops->mask_events(chip, chip->events_mask); - chip->ops->read_events(chip, &tmp); - - ret = request_irq(client->irq, da903x_irq_handler, - IRQF_TRIGGER_FALLING, - "da903x", chip); - if (ret) { - dev_err(&client->dev, "failed to request irq %d\n", - client->irq); - goto out_free_chip; - } - - ret = da903x_add_subdevs(chip, pdata); - if (ret) - goto out_free_irq; - - return 0; - -out_free_irq: - free_irq(client->irq, chip); -out_free_chip: - kfree(chip); - return ret; -} - -static int __devexit da903x_remove(struct i2c_client *client) -{ - struct da903x_chip *chip = i2c_get_clientdata(client); - - da903x_remove_subdevs(chip); - free_irq(client->irq, chip); - kfree(chip); - return 0; -} - -static struct i2c_driver da903x_driver = { - .driver = { - .name = "da903x", - .owner = THIS_MODULE, - }, - .probe = da903x_probe, - .remove = __devexit_p(da903x_remove), - .id_table = da903x_id_table, -}; - -static int __init da903x_init(void) -{ - return i2c_add_driver(&da903x_driver); -} -subsys_initcall(da903x_init); - -static void __exit da903x_exit(void) -{ - i2c_del_driver(&da903x_driver); -} -module_exit(da903x_exit); - -MODULE_DESCRIPTION("PMIC Driver for Dialog Semiconductor DA9034"); -MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>" - "Mike Rapoport <mike@compulab.co.il>"); -MODULE_LICENSE("GPL"); |