mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 07:54:07 +02:00
28ea12b3b3
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23421 3c298f89-4303-0410-b956-a3cf2f4a3e73
279 lines
6.6 KiB
Diff
279 lines
6.6 KiB
Diff
From 626675b8f03f416a6b1c50f69dabb8a3f27b200a 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 | 238 +++++++++++++++++++++++++++++++++++++++++++++++
|
|
3 files changed, 248 insertions(+), 0 deletions(-)
|
|
create mode 100644 drivers/misc/n526-lpc.c
|
|
|
|
--- a/drivers/misc/Kconfig
|
|
+++ b/drivers/misc/Kconfig
|
|
@@ -398,6 +398,15 @@ 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
|
|
@@ -36,3 +36,4 @@ obj-y += cb710/
|
|
obj-$(CONFIG_VMWARE_BALLOON) += vmw_balloon.o
|
|
obj-$(CONFIG_ARM_CHARLCD) += arm-charlcd.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 +1,238 @@
|
|
+/*
|
|
+ * 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/slab.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");
|