arch/arm/mach-pxa/htcsable/htcsable_buttons.c

   1 /*
   2  * Buttons driver for iPAQ h4150/h4350.
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file COPYING in the main directory of this archive for
   6  * more details.
   7  *
   8  * Copyright (C) 2005 Pawel Kolodziejski
   9  * Copyright (C) 2003 Joshua Wise
  10  *
  11  */
  12
  13 #include <linux/input.h>
  14 #include <linux/input_pda.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/irq.h>
  19 #include <linux/platform_device.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/hardware/gpio_keys.h>
  22 #include <asm/arch/htcsable-gpio.h>
  23
  24 static struct gpio_keys_button pxa_buttons[] = {
  25         { _KEY_POWER,   GPIO_NR_HTCSABLE_KEY_ON_N,      1, "Power button"       },
  26 };
  27
  28 static struct gpio_keys_platform_data gpio_keys_data = {
  29         .buttons = pxa_buttons,
  30         .nbuttons = ARRAY_SIZE(pxa_buttons),
  31 };
  32
  33 static struct platform_device htcsable_keys_gpio = {
  34         .name = "gpio-keys",
  35         .dev = { .platform_data = &gpio_keys_data, }
  36 };
  37
  38 static int __init htcsable_buttons_probe(struct device *dev)
  39 {
  40         platform_device_register(&htcsable_keys_gpio);
  41         return 0;
  42 }
  43
  44 static struct device_driver htcsable_buttons_driver = {
  45         .name           = "htcsable_buttons",
  46         .bus            = &platform_bus_type,
  47         .probe          = htcsable_buttons_probe,
  48 };
  49
  50 static int __init htcsable_buttons_init(void)
  51 {
  52         if (!machine_is_hw6900())
  53                 return -ENODEV;
  54
  55         return driver_register(&htcsable_buttons_driver);
  56 }
  57
  58 static void __exit htcsable_buttons_exit(void)
  59 {
  60         driver_unregister(&htcsable_buttons_driver);
  61 }
  62
  63 module_init(htcsable_buttons_init);
  64 module_exit(htcsable_buttons_exit);
  65
  66 MODULE_AUTHOR ("Joshua Wise, Pawel Kolodziejski, Paul Sokolosvky, Luke Kenneth Casson Leighton");
  67 MODULE_DESCRIPTION ("Buttons support for iPAQ htcsable");
  68 MODULE_LICENSE ("GPL");
  69