diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/input/keyboard/ipaq-micro-keys.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/input/keyboard/ipaq-micro-keys.c')
-rw-r--r-- | kernel/drivers/input/keyboard/ipaq-micro-keys.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/kernel/drivers/input/keyboard/ipaq-micro-keys.c b/kernel/drivers/input/keyboard/ipaq-micro-keys.c new file mode 100644 index 000000000..602900d1f --- /dev/null +++ b/kernel/drivers/input/keyboard/ipaq-micro-keys.c @@ -0,0 +1,168 @@ +/* + * 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. + * + * h3600 atmel micro companion support, key subdevice + * based on previous kernel 2.4 version + * Author : Alessandro Gardich <gremlin@gremlin.it> + * Author : Linus Walleij <linus.walleij@linaro.org> + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/fs.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/pm.h> +#include <linux/sysctl.h> +#include <linux/proc_fs.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/input.h> +#include <linux/platform_device.h> +#include <linux/mfd/ipaq-micro.h> + +struct ipaq_micro_keys { + struct ipaq_micro *micro; + struct input_dev *input; + u16 *codes; +}; + +static const u16 micro_keycodes[] = { + KEY_RECORD, /* 1: Record button */ + KEY_CALENDAR, /* 2: Calendar */ + KEY_ADDRESSBOOK, /* 3: Contacts (looks like Outlook) */ + KEY_MAIL, /* 4: Envelope (Q on older iPAQs) */ + KEY_HOMEPAGE, /* 5: Start (looks like swoopy arrow) */ + KEY_UP, /* 6: Up */ + KEY_RIGHT, /* 7: Right */ + KEY_LEFT, /* 8: Left */ + KEY_DOWN, /* 9: Down */ +}; + +static void micro_key_receive(void *data, int len, unsigned char *msg) +{ + struct ipaq_micro_keys *keys = data; + int key, down; + + down = 0x80 & msg[0]; + key = 0x7f & msg[0]; + + if (key < ARRAY_SIZE(micro_keycodes)) { + input_report_key(keys->input, keys->codes[key], down); + input_sync(keys->input); + } +} + +static void micro_key_start(struct ipaq_micro_keys *keys) +{ + spin_lock(&keys->micro->lock); + keys->micro->key = micro_key_receive; + keys->micro->key_data = keys; + spin_unlock(&keys->micro->lock); +} + +static void micro_key_stop(struct ipaq_micro_keys *keys) +{ + spin_lock(&keys->micro->lock); + keys->micro->key = NULL; + keys->micro->key_data = NULL; + spin_unlock(&keys->micro->lock); +} + +static int micro_key_open(struct input_dev *input) +{ + struct ipaq_micro_keys *keys = input_get_drvdata(input); + + micro_key_start(keys); + + return 0; +} + +static void micro_key_close(struct input_dev *input) +{ + struct ipaq_micro_keys *keys = input_get_drvdata(input); + + micro_key_stop(keys); +} + +static int micro_key_probe(struct platform_device *pdev) +{ + struct ipaq_micro_keys *keys; + int error; + int i; + + keys = devm_kzalloc(&pdev->dev, sizeof(*keys), GFP_KERNEL); + if (!keys) + return -ENOMEM; + + keys->micro = dev_get_drvdata(pdev->dev.parent); + + keys->input = devm_input_allocate_device(&pdev->dev); + if (!keys->input) + return -ENOMEM; + + keys->input->keycodesize = sizeof(micro_keycodes[0]); + keys->input->keycodemax = ARRAY_SIZE(micro_keycodes); + keys->codes = devm_kmemdup(&pdev->dev, micro_keycodes, + keys->input->keycodesize * keys->input->keycodemax, + GFP_KERNEL); + keys->input->keycode = keys->codes; + + __set_bit(EV_KEY, keys->input->evbit); + for (i = 0; i < ARRAY_SIZE(micro_keycodes); i++) + __set_bit(micro_keycodes[i], keys->input->keybit); + + keys->input->name = "h3600 micro keys"; + keys->input->open = micro_key_open; + keys->input->close = micro_key_close; + input_set_drvdata(keys->input, keys); + + error = input_register_device(keys->input); + if (error) + return error; + + platform_set_drvdata(pdev, keys); + return 0; +} + +static int __maybe_unused micro_key_suspend(struct device *dev) +{ + struct ipaq_micro_keys *keys = dev_get_drvdata(dev); + + micro_key_stop(keys); + + return 0; +} + +static int __maybe_unused micro_key_resume(struct device *dev) +{ + struct ipaq_micro_keys *keys = dev_get_drvdata(dev); + struct input_dev *input = keys->input; + + mutex_lock(&input->mutex); + + if (input->users) + micro_key_start(keys); + + mutex_unlock(&input->mutex); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(micro_key_dev_pm_ops, + micro_key_suspend, micro_key_resume); + +static struct platform_driver micro_key_device_driver = { + .driver = { + .name = "ipaq-micro-keys", + .pm = µ_key_dev_pm_ops, + }, + .probe = micro_key_probe, +}; +module_platform_driver(micro_key_device_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("driver for iPAQ Atmel micro keys"); +MODULE_ALIAS("platform:ipaq-micro-keys"); |