diff options
Diffstat (limited to 'target/linux/xburst/patches-2.6.35/801-n526-lpc.patch')
| -rw-r--r-- | target/linux/xburst/patches-2.6.35/801-n526-lpc.patch | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.35/801-n526-lpc.patch b/target/linux/xburst/patches-2.6.35/801-n526-lpc.patch new file mode 100644 index 0000000000..cf476c4575 --- /dev/null +++ b/target/linux/xburst/patches-2.6.35/801-n526-lpc.patch @@ -0,0 +1,277 @@ +From f5978b5a9701fe1ddeffa0c5f73923fcaf31129e Mon Sep 17 00:00:00 2001 +From: Lars-Peter Clausen <lars@metafoo.de> +Date: Wed, 12 May 2010 14:23:43 +0200 +Subject: [PATCH] Add n526 lpc driver + +--- + drivers/misc/Kconfig | 9 ++ + drivers/misc/Makefile | 1 + + drivers/misc/n526-lpc.c | 237 +++++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 247 insertions(+), 0 deletions(-) + create mode 100644 drivers/misc/n526-lpc.c + +--- a/drivers/misc/Kconfig ++++ b/drivers/misc/Kconfig +@@ -361,6 +361,15 @@ config N516_LPC + help + N516 keyboard & power controller driver + ++config N526_LPC ++ tristate "N526 LPC934 coprocessor" ++ depends on JZ4740_N526 ++ help ++ If you say yes here you get support for the N526s NXP LPC934 coprocessor. ++ It is used as a keyboard controllor and for power management. ++ ++ If you have a N526 you probably want to say Y here. ++ + source "drivers/misc/c2port/Kconfig" + source "drivers/misc/eeprom/Kconfig" + source "drivers/misc/cb710/Kconfig" +--- a/drivers/misc/Makefile ++++ b/drivers/misc/Makefile +@@ -32,3 +32,4 @@ obj-y += eeprom/ + obj-y += cb710/ + obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o + obj-$(CONFIG_N516_LPC) += n516-lpc.o ++obj-$(CONFIG_N526_LPC) += n526-lpc.o +--- /dev/null ++++ b/drivers/misc/n526-lpc.c +@@ -0,0 +1,237 @@ ++/* ++ * 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"); |