diff options
Diffstat (limited to 'drivers/input/keyboard/mxc_pwrkey.c')
| -rw-r--r-- | drivers/input/keyboard/mxc_pwrkey.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/input/keyboard/mxc_pwrkey.c b/drivers/input/keyboard/mxc_pwrkey.c new file mode 100644 index 000000000000..9621f1e3d78f --- /dev/null +++ b/drivers/input/keyboard/mxc_pwrkey.c @@ -0,0 +1,147 @@ +/* + * Copyright (C) 2010 Freescale Semiconductor, Inc. + * + * 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. + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/init.h> +#include <asm/io.h> +#include <asm/uaccess.h> +#include <linux/kd.h> +#include <linux/fs.h> +#include <linux/ioctl.h> +#include <linux/input.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/pmic_external.h> +#include "../arch/arm/mach-mx5/mx51_pins.h" +#define KEYCODE_ONOFF KEY_F4 + +#if 1 +#define pk_printf printk +#else +#define pk_printf(...) +#endif + +/*! Input device structure. */ +struct input_dev *mxcpwrkey_dev = NULL; +static bool key_press=false; +static void power_key_event_handler(void) +{ + if (!key_press) { + key_press = true; + input_report_key(mxcpwrkey_dev, KEYCODE_ONOFF, 1); + pk_printf("%s_KeyUP\n",__func__); + }else { + if (key_press){ + key_press = false; + input_report_key(mxcpwrkey_dev, KEYCODE_ONOFF, 0); + pk_printf("%s_KeyDown\n",__func__); + } + } + +} +static int mxcpwrkey_probe(struct platform_device *pdev) +{ + int retval,err; + pmic_event_callback_t power_key_event; + + printk("I.MX5 powerkey probe\n"); +/* + init_completion(&pk_cmd_done); + pwrkey_task = kthread_run(powerkey_thread, pdev, "powerkey"); + if (IS_ERR(pwrkey_task)) { + err = PTR_ERR(pwrkey_task); + printk(KERN_ERR "powerkey: Failed to start powerkey_thread, err: %d\n", err); + goto err1; + } +*/ + mxcpwrkey_dev = input_allocate_device(); + if (!mxcpwrkey_dev) { + printk(KERN_ERR + "mxcpwrkey_dev: not enough memory for input device\n"); + retval = -ENOMEM; + goto err1; + } + + mxcpwrkey_dev->name = "mxc_power_key"; + mxcpwrkey_dev->phys = "mxcpwrkey/input0";; + mxcpwrkey_dev->id.bustype = BUS_HOST ; + mxcpwrkey_dev->evbit[0] = BIT_MASK(EV_KEY) ; + + + power_key_event.param = NULL; + power_key_event.func = (void *)power_key_event_handler; + pmic_event_subscribe(EVENT_PWRONI, power_key_event); + + input_set_capability(mxcpwrkey_dev, EV_KEY, KEYCODE_ONOFF); + + retval = input_register_device(mxcpwrkey_dev); + if (retval < 0) { + printk(KERN_ERR + "mxcpwrkey_dev: failed to register input device\n"); + goto err2; + } + return 0; + + err2: + input_free_device(mxcpwrkey_dev); + err1: + return retval; +} +static int mxcpwrkey_remove(struct platform_device *pdev) +{ + return 0; +} +static int mxc_pwrkey_suspend(struct platform_device *pdev, pm_message_t state) +{ + return 0; +} +static int mxc_pwrkey_resume(struct platform_device *pdev) +{ + return 0; +} +static struct platform_driver mxcpwrkey_driver = { + .driver = { + .name = "mxcpwrkey", + }, + .probe = mxcpwrkey_probe, + .remove = mxcpwrkey_remove, + .suspend = mxc_pwrkey_suspend, + .resume = mxc_pwrkey_resume, +}; +static int __init mxcpwrkey_init(void) +{ + platform_driver_register(&mxcpwrkey_driver); + return 0; +} + +static void __exit mxcpwrkey_exit(void) +{ + platform_driver_unregister(&mxcpwrkey_driver); +} +module_init(mxcpwrkey_init); +module_exit(mxcpwrkey_exit); + + +MODULE_AUTHOR("eben"); +MODULE_DESCRIPTION("MXC power key Driver"); +MODULE_LICENSE("GPL"); + |