diff options
Diffstat (limited to 'drivers/mfd/sec-core.c')
| -rw-r--r-- | drivers/mfd/sec-core.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c new file mode 100644 index 00000000000..2988efde11e --- /dev/null +++ b/drivers/mfd/sec-core.c @@ -0,0 +1,216 @@ +/* + * sec-core.c + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd + * http://www.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. + * + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/pm_runtime.h> +#include <linux/mutex.h> +#include <linux/mfd/core.h> +#include <linux/mfd/samsung/core.h> +#include <linux/mfd/samsung/irq.h> +#include <linux/mfd/samsung/rtc.h> +#include <linux/regmap.h> + +static struct mfd_cell s5m8751_devs[] = { + { + .name = "s5m8751-pmic", + }, { + .name = "s5m-charger", + }, { + .name = "s5m8751-codec", + }, +}; + +static struct mfd_cell s5m8763_devs[] = { + { + .name = "s5m8763-pmic", + }, { + .name = "s5m-rtc", + }, { + .name = "s5m-charger", + }, +}; + +static struct mfd_cell s5m8767_devs[] = { + { + .name = "s5m8767-pmic", + }, { + .name = "s5m-rtc", + }, +}; + +static struct mfd_cell s2mps11_devs[] = { + { + .name = "s2mps11-pmic", + }, +}; + +int sec_reg_read(struct sec_pmic_dev *sec_pmic, u8 reg, void *dest) +{ + return regmap_read(sec_pmic->regmap, reg, dest); +} +EXPORT_SYMBOL_GPL(sec_reg_read); + +int sec_bulk_read(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) +{ + return regmap_bulk_read(sec_pmic->regmap, reg, buf, count); +} +EXPORT_SYMBOL_GPL(sec_bulk_read); + +int sec_reg_write(struct sec_pmic_dev *sec_pmic, u8 reg, u8 value) +{ + return regmap_write(sec_pmic->regmap, reg, value); +} +EXPORT_SYMBOL_GPL(sec_reg_write); + +int sec_bulk_write(struct sec_pmic_dev *sec_pmic, u8 reg, int count, u8 *buf) +{ + return regmap_raw_write(sec_pmic->regmap, reg, buf, count); +} +EXPORT_SYMBOL_GPL(sec_bulk_write); + +int sec_reg_update(struct sec_pmic_dev *sec_pmic, u8 reg, u8 val, u8 mask) +{ + return regmap_update_bits(sec_pmic->regmap, reg, mask, val); +} +EXPORT_SYMBOL_GPL(sec_reg_update); + +static struct regmap_config sec_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int sec_pmic_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct sec_platform_data *pdata = i2c->dev.platform_data; + struct sec_pmic_dev *sec_pmic; + int ret; + + sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev), + GFP_KERNEL); + if (sec_pmic == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, sec_pmic); + sec_pmic->dev = &i2c->dev; + sec_pmic->i2c = i2c; + sec_pmic->irq = i2c->irq; + sec_pmic->type = id->driver_data; + + if (pdata) { + sec_pmic->device_type = pdata->device_type; + sec_pmic->ono = pdata->ono; + sec_pmic->irq_base = pdata->irq_base; + sec_pmic->wakeup = pdata->wakeup; + } + + sec_pmic->regmap = devm_regmap_init_i2c(i2c, &sec_regmap_config); + if (IS_ERR(sec_pmic->regmap)) { + ret = PTR_ERR(sec_pmic->regmap); + dev_err(&i2c->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR); + i2c_set_clientdata(sec_pmic->rtc, sec_pmic); + + if (pdata && pdata->cfg_pmic_irq) + pdata->cfg_pmic_irq(); + + sec_irq_init(sec_pmic); + + pm_runtime_set_active(sec_pmic->dev); + + switch (sec_pmic->device_type) { + case S5M8751X: + ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs, + ARRAY_SIZE(s5m8751_devs), NULL, 0); + break; + case S5M8763X: + ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs, + ARRAY_SIZE(s5m8763_devs), NULL, 0); + break; + case S5M8767X: + ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs, + ARRAY_SIZE(s5m8767_devs), NULL, 0); + break; + case S2MPS11X: + ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs, + ARRAY_SIZE(s2mps11_devs), NULL, 0); + break; + default: + /* If this happens the probe function is problem */ + BUG(); + } + + if (ret < 0) + goto err; + + return ret; + +err: + mfd_remove_devices(sec_pmic->dev); + sec_irq_exit(sec_pmic); + i2c_unregister_device(sec_pmic->rtc); + return ret; +} + +static int sec_pmic_remove(struct i2c_client *i2c) +{ + struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c); + + mfd_remove_devices(sec_pmic->dev); + sec_irq_exit(sec_pmic); + i2c_unregister_device(sec_pmic->rtc); + return 0; +} + +static const struct i2c_device_id sec_pmic_id[] = { + { "sec_pmic", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, sec_pmic_id); + +static struct i2c_driver sec_pmic_driver = { + .driver = { + .name = "sec_pmic", + .owner = THIS_MODULE, + }, + .probe = sec_pmic_probe, + .remove = sec_pmic_remove, + .id_table = sec_pmic_id, +}; + +static int __init sec_pmic_init(void) +{ + return i2c_add_driver(&sec_pmic_driver); +} + +subsys_initcall(sec_pmic_init); + +static void __exit sec_pmic_exit(void) +{ + i2c_del_driver(&sec_pmic_driver); +} +module_exit(sec_pmic_exit); + +MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>"); +MODULE_DESCRIPTION("Core support for the S5M MFD"); +MODULE_LICENSE("GPL"); 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