diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/gpio/gpio-mc9s08dz60.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/gpio/gpio-mc9s08dz60.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/ANDROID_3.4.5/drivers/gpio/gpio-mc9s08dz60.c b/ANDROID_3.4.5/drivers/gpio/gpio-mc9s08dz60.c deleted file mode 100644 index 2738cc44..00000000 --- a/ANDROID_3.4.5/drivers/gpio/gpio-mc9s08dz60.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * Copyright 2009-2012 Freescale Semiconductor, Inc. All Rights Reserved. - * - * Author: Wu Guoxing <b39297@freescale.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. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/gpio.h> - -#define GPIO_GROUP_NUM 2 -#define GPIO_NUM_PER_GROUP 8 -#define GPIO_NUM (GPIO_GROUP_NUM*GPIO_NUM_PER_GROUP) - -struct mc9s08dz60 { - struct i2c_client *client; - struct gpio_chip chip; -}; - -static inline struct mc9s08dz60 *to_mc9s08dz60(struct gpio_chip *gc) -{ - return container_of(gc, struct mc9s08dz60, chip); -} - - -static void mc9s_gpio_to_reg_and_bit(int offset, u8 *reg, u8 *bit) -{ - *reg = 0x20 + offset / GPIO_NUM_PER_GROUP; - *bit = offset % GPIO_NUM_PER_GROUP; -} - -static int mc9s08dz60_get_value(struct gpio_chip *gc, unsigned offset) -{ - u8 reg, bit; - s32 value; - struct mc9s08dz60 *mc9s = to_mc9s08dz60(gc); - - mc9s_gpio_to_reg_and_bit(offset, ®, &bit); - value = i2c_smbus_read_byte_data(mc9s->client, reg); - - return (value >= 0) ? (value >> bit) & 0x1 : 0; -} - -static int mc9s08dz60_set(struct mc9s08dz60 *mc9s, unsigned offset, int val) -{ - u8 reg, bit; - s32 value; - - mc9s_gpio_to_reg_and_bit(offset, ®, &bit); - value = i2c_smbus_read_byte_data(mc9s->client, reg); - if (value >= 0) { - if (val) - value |= 1 << bit; - else - value &= ~(1 << bit); - - return i2c_smbus_write_byte_data(mc9s->client, reg, value); - } else - return value; - -} - - -static void mc9s08dz60_set_value(struct gpio_chip *gc, unsigned offset, int val) -{ - struct mc9s08dz60 *mc9s = to_mc9s08dz60(gc); - - mc9s08dz60_set(mc9s, offset, val); -} - -static int mc9s08dz60_direction_output(struct gpio_chip *gc, - unsigned offset, int val) -{ - struct mc9s08dz60 *mc9s = to_mc9s08dz60(gc); - - return mc9s08dz60_set(mc9s, offset, val); -} - -static int mc9s08dz60_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int ret = 0; - struct mc9s08dz60 *mc9s; - - mc9s = kzalloc(sizeof(*mc9s), GFP_KERNEL); - if (!mc9s) - return -ENOMEM; - - mc9s->chip.label = client->name; - mc9s->chip.base = -1; - mc9s->chip.dev = &client->dev; - mc9s->chip.owner = THIS_MODULE; - mc9s->chip.ngpio = GPIO_NUM; - mc9s->chip.can_sleep = 1; - mc9s->chip.get = mc9s08dz60_get_value; - mc9s->chip.set = mc9s08dz60_set_value; - mc9s->chip.direction_output = mc9s08dz60_direction_output; - mc9s->client = client; - i2c_set_clientdata(client, mc9s); - - ret = gpiochip_add(&mc9s->chip); - if (ret) - goto error; - - return 0; - - error: - kfree(mc9s); - return ret; -} - -static int mc9s08dz60_remove(struct i2c_client *client) -{ - struct mc9s08dz60 *mc9s; - int ret; - - mc9s = i2c_get_clientdata(client); - - ret = gpiochip_remove(&mc9s->chip); - if (!ret) - kfree(mc9s); - - return ret; - -} - -static const struct i2c_device_id mc9s08dz60_id[] = { - {"mc9s08dz60", 0}, - {}, -}; - -MODULE_DEVICE_TABLE(i2c, mc9s08dz60_id); - -static struct i2c_driver mc9s08dz60_i2c_driver = { - .driver = { - .owner = THIS_MODULE, - .name = "mc9s08dz60", - }, - .probe = mc9s08dz60_probe, - .remove = mc9s08dz60_remove, - .id_table = mc9s08dz60_id, -}; - -module_i2c_driver(mc9s08dz60_i2c_driver); - -MODULE_AUTHOR("Freescale Semiconductor, Inc. " - "Wu Guoxing <b39297@freescale.com>"); -MODULE_DESCRIPTION("mc9s08dz60 gpio function on mx35 3ds board"); -MODULE_LICENSE("GPL v2"); |