diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-04 18:13:17 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-04 18:16:12 -0700 |
commit | a3d52136ee8f7399859f9a0824470fd49b1d1a00 (patch) | |
tree | ac0fd3d1efc356029cbbc5e413f778f7231cd909 /drivers/input/misc/cobalt_btns.c | |
parent | 5b339915762d30b21995aa7263e74081f2f1110a (diff) | |
parent | 84767d00a8fd54dd97866561f6e2ee246c8e1cdc (diff) |
Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input: (65 commits)
Input: gpio_keys - add support for switches (EV_SW)
Input: cobalt_btns - convert to use polldev library
Input: add skeleton for simple polled devices
Input: update some documentation
Input: wistron - fix typo in keymap for Acer TM610
Input: add input_set_capability() helper
Input: i8042 - add Fujitsu touchscreen/touchpad PNP IDs
Input: i8042 - add Panasonic CF-29 to nomux list
Input: lifebook - split into 2 devices
Input: lifebook - add signature of Panasonic CF-29
Input: lifebook - activate 6-byte protocol on select models
Input: lifebook - work properly on Panasonic CF-18
Input: cobalt buttons - separate device and driver registration
Input: ati_remote - make button repeat sensitivity configurable
Input: pxa27x - do not use deprecated SA_INTERRUPT flag
Input: ucb1400 - make delays configurable
Input: misc devices - switch to using input_dev->dev.parent
Input: joysticks - switch to using input_dev->dev.parent
Input: touchscreens - switch to using input_dev->dev.parent
Input: mice - switch to using input_dev->dev.parent
...
Fixed up conflicts with core device model removal of "struct subsystem" manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/input/misc/cobalt_btns.c')
-rw-r--r-- | drivers/input/misc/cobalt_btns.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c new file mode 100644 index 000000000000..064b07936019 --- /dev/null +++ b/drivers/input/misc/cobalt_btns.c @@ -0,0 +1,172 @@ +/* + * Cobalt button interface driver. + * + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/init.h> +#include <linux/input-polldev.h> +#include <linux/ioport.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#define BUTTONS_POLL_INTERVAL 30 /* msec */ +#define BUTTONS_COUNT_THRESHOLD 3 +#define BUTTONS_STATUS_MASK 0xfe000000 + +struct buttons_dev { + struct input_polled_dev *poll_dev; + void __iomem *reg; +}; + +struct buttons_map { + uint32_t mask; + int keycode; + int count; +}; + +static struct buttons_map buttons_map[] = { + { 0x02000000, KEY_RESTART, }, + { 0x04000000, KEY_LEFT, }, + { 0x08000000, KEY_UP, }, + { 0x10000000, KEY_DOWN, }, + { 0x20000000, KEY_RIGHT, }, + { 0x40000000, KEY_ENTER, }, + { 0x80000000, KEY_SELECT, }, +}; + +static void handle_buttons(struct input_polled_dev *dev) +{ + struct buttons_map *button = buttons_map; + struct buttons_dev *bdev = dev->private; + struct input_dev *input = dev->input; + uint32_t status; + int i; + + status = readl(bdev->reg); + status = ~status & BUTTONS_STATUS_MASK; + + for (i = 0; i < ARRAY_SIZE(buttons_map); i++) { + if (status & button->mask) { + button->count++; + } else { + if (button->count >= BUTTONS_COUNT_THRESHOLD) { + input_report_key(input, button->keycode, 0); + input_sync(input); + } + button->count = 0; + } + + if (button->count == BUTTONS_COUNT_THRESHOLD) { + input_report_key(input, button->keycode, 1); + input_sync(input); + } + + button++; + } +} + +static int __devinit cobalt_buttons_probe(struct platform_device *pdev) +{ + struct buttons_dev *bdev; + struct input_polled_dev *poll_dev; + struct input_dev *input; + struct resource *res; + int error, i; + + bdev = kzalloc(sizeof(struct buttons_dev), GFP_KERNEL); + poll_dev = input_allocate_polled_device(); + if (!bdev || !poll_dev) { + error = -ENOMEM; + goto err_free_mem; + } + + poll_dev->private = bdev; + poll_dev->poll = handle_buttons; + poll_dev->poll_interval = BUTTONS_POLL_INTERVAL; + + input = poll_dev->input; + input->name = "Cobalt buttons"; + input->phys = "cobalt/input0"; + input->id.bustype = BUS_HOST; + input->cdev.dev = &pdev->dev; + + input->evbit[0] = BIT(EV_KEY); + for (i = 0; i < ARRAY_SIZE(buttons_map); i++) { + set_bit(buttons_map[i].keycode, input->keybit); + buttons_map[i].count = 0; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + error = -EBUSY; + goto err_free_mem; + } + + bdev->poll_dev = poll_dev; + bdev->reg = ioremap(res->start, res->end - res->start + 1); + dev_set_drvdata(&pdev->dev, bdev); + + error = input_register_polled_device(poll_dev); + if (error) + goto err_iounmap; + + return 0; + + err_iounmap: + iounmap(bdev->reg); + err_free_mem: + input_free_polled_device(poll_dev); + kfree(bdev); + dev_set_drvdata(&pdev->dev, NULL); + return error; +} + +static int __devexit cobalt_buttons_remove(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct buttons_dev *bdev = dev_get_drvdata(dev); + + input_unregister_polled_device(bdev->poll_dev); + input_free_polled_device(bdev->poll_dev); + iounmap(bdev->reg); + kfree(bdev); + dev_set_drvdata(dev, NULL); + + return 0; +} + +static struct platform_driver cobalt_buttons_driver = { + .probe = cobalt_buttons_probe, + .remove = __devexit_p(cobalt_buttons_remove), + .driver = { + .name = "Cobalt buttons", + .owner = THIS_MODULE, + }, +}; + +static int __init cobalt_buttons_init(void) +{ + return platform_driver_register(&cobalt_buttons_driver); +} + +static void __exit cobalt_buttons_exit(void) +{ + platform_driver_unregister(&cobalt_buttons_driver); +} + +module_init(cobalt_buttons_init); +module_exit(cobalt_buttons_exit); |