diff options
Diffstat (limited to 'target/linux/xburst/files-2.6.32/drivers/i2c/chips/n526-lpc.c')
| -rw-r--r-- | target/linux/xburst/files-2.6.32/drivers/i2c/chips/n526-lpc.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n526-lpc.c b/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n526-lpc.c deleted file mode 100644 index 4ac5c7992d..0000000000 --- a/target/linux/xburst/files-2.6.32/drivers/i2c/chips/n526-lpc.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de> - * - * 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. - * - * 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., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/input.h> -#include <linux/irq.h> -#include <linux/interrupt.h> - -#include <linux/workqueue.h> - -#include <asm/mach-jz4740/irq.h> -#include <asm/mach-jz4740/gpio.h> - -struct n526_lpc { - struct i2c_client *client; - struct input_dev *input; - - struct work_struct work; -}; - -static const unsigned int n526_lpc_keymap[] = { - [0x01] = KEY_PAGEUP, - [0x02] = KEY_PAGEDOWN, - [0x03] = KEY_VOLUMEUP, - [0x04] = KEY_VOLUMEDOWN, - [0x06] = KEY_1, - [0x07] = KEY_Q, - [0x08] = KEY_A, - [0x09] = KEY_Z, - [0x0a] = KEY_LEFTSHIFT, - [0x0b] = KEY_2, - [0x0c] = KEY_W, - [0x0d] = KEY_S, - [0x0e] = KEY_X, - [0x0f] = KEY_REFRESH, - [0x10] = KEY_3, - [0x11] = KEY_E, - [0x12] = KEY_D, - [0x13] = KEY_C, - [0x14] = KEY_DOCUMENTS, - [0x15] = KEY_4, - [0x16] = KEY_R, - [0x17] = KEY_F, - [0x18] = KEY_V, - [0x19] = KEY_MUTE, - [0x1a] = KEY_5, - [0x1b] = KEY_T, - [0x1c] = KEY_G, - [0x1d] = KEY_B, - [0x1e] = KEY_DELETE, - [0x1f] = KEY_6, - [0x20] = KEY_Y, - [0x21] = KEY_H, - [0x22] = KEY_N, - [0x23] = KEY_SPACE, - [0x24] = KEY_7, - [0x25] = KEY_U, - [0x26] = KEY_J, - [0x27] = KEY_M, -/* [0x28] = KEY_SYM, */ - [0x29] = KEY_8, - [0x2a] = KEY_I, - [0x2b] = KEY_K, - [0x2c] = KEY_MENU, - [0x2d] = KEY_LEFT, - [0x2e] = KEY_9, - [0x2f] = KEY_O, - [0x30] = KEY_L, - [0x31] = KEY_UP, - [0x32] = KEY_DOWN, - [0x33] = KEY_0, - [0x34] = KEY_P, - [0x35] = KEY_BACKSPACE, - [0x36] = KEY_ENTER, - [0x37] = KEY_RIGHT, -}; - -static void n526_lpc_irq_work(struct work_struct *work) -{ - int ret; - struct n526_lpc *n526_lpc = container_of(work, struct n526_lpc, work); - struct i2c_client *client = n526_lpc->client; - unsigned char raw_msg; - struct i2c_msg msg = {client->addr, client->flags | I2C_M_RD, 1, &raw_msg}; - unsigned char keycode; - - - ret = i2c_transfer(client->adapter, &msg, 1); - - if (ret != 1) { - dev_err(&client->dev, "Failed to read lpc status\n"); - } - - keycode = raw_msg & 0x7f; - - if (keycode < ARRAY_SIZE(n526_lpc_keymap)) { - input_report_key(n526_lpc->input, n526_lpc_keymap[keycode], - !(raw_msg & 0x80)); - input_sync(n526_lpc->input); - } -} - -static irqreturn_t n526_lpc_irq(int irq, void *dev_id) -{ - struct n526_lpc *n526_lpc = dev_id; - - schedule_work(&n526_lpc->work); - return IRQ_HANDLED; -} - -static int __devinit n526_lpc_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - int ret; - size_t i; - struct n526_lpc *n526_lpc; - struct input_dev *input; - - n526_lpc = kmalloc(sizeof(*n526_lpc), GFP_KERNEL); - - if (!n526_lpc) { - dev_err(&client->dev, "Failed to allocate device structure\n"); - return -ENOMEM; - } - - input = input_allocate_device(); - if (!input) { - dev_err(&client->dev, "Failed to allocate input device\n"); - ret = -ENOMEM; - goto err_free; - } - - input->name = "n526-keys"; - input->phys = "n526-keys/input0"; - input->dev.parent = &client->dev; - input->id.bustype = BUS_I2C; - input->id.vendor = 0x0001; - input->id.product = 0x0001; - input->id.version = 0x0001; - - __set_bit(EV_KEY, input->evbit); - - for (i = 0; i < ARRAY_SIZE(n526_lpc_keymap); ++i) { - if (n526_lpc_keymap[i] != 0) - __set_bit(n526_lpc_keymap[i], input->keybit); - } - - ret = input_register_device(input); - - if (ret) { - dev_err(&client->dev, "Failed to register input device: %d\n", ret); - goto err_free_input; - } - - n526_lpc->client = client; - n526_lpc->input = input; - INIT_WORK(&n526_lpc->work, n526_lpc_irq_work); - - ret = request_irq(client->irq, n526_lpc_irq, IRQF_TRIGGER_FALLING, - "n526-lpc", n526_lpc); - if (ret) { - dev_err(&client->dev, "Failed to request irq: %d\n", ret); - goto err_unregister_input; - } - - i2c_set_clientdata(client, n526_lpc); - - return 0; - -err_unregister_input: - input_unregister_device(input); -err_free_input: - input_free_device(input); -err_free: - kfree(n526_lpc); - - return ret; -} - -static int n526_lpc_remove(struct i2c_client *client) -{ - struct n526_lpc *n526_lpc = i2c_get_clientdata(client); - - free_irq(client->irq, n526_lpc); - - i2c_set_clientdata(client, NULL); - input_unregister_device(n526_lpc->input); - input_free_device(n526_lpc->input); - kfree(n526_lpc); - - return 0; -} - -static const struct i2c_device_id n526_lpc_id[] = { - { "n526-lpc", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, n526_lpc_id); - -static struct i2c_driver n526_lpc_driver = { - .driver = { - .name = "n526-lpc", - .owner = THIS_MODULE, - }, - .probe = n526_lpc_probe, - .remove = n526_lpc_remove, - .id_table = n526_lpc_id, -}; - -static int __init n526_lpc_init(void) -{ - return i2c_add_driver(&n526_lpc_driver); -} -module_init(n526_lpc_init); - -static void __exit n526_lpc_exit(void) -{ - i2c_del_driver(&n526_lpc_driver); -} -module_exit(n526_lpc_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Lars-Peter Clausen"); -MODULE_DESCRIPTION("n526 keypad driver"); -MODULE_ALIAS("i2c:n526-keys"); |