diff options
Diffstat (limited to 'drivers/input/misc/cobalt_btns.c')
| -rw-r--r-- | drivers/input/misc/cobalt_btns.c | 111 |
1 files changed, 51 insertions, 60 deletions
diff --git a/drivers/input/misc/cobalt_btns.c b/drivers/input/misc/cobalt_btns.c index 064b0793601..3e11510ff82 100644 --- a/drivers/input/misc/cobalt_btns.c +++ b/drivers/input/misc/cobalt_btns.c @@ -1,7 +1,7 @@ /* * Cobalt button interface driver. * - * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2007-2008 Yoichi Yuasa <yuasa@linux-mips.org> * * 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 @@ -15,71 +15,64 @@ * * 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 + * 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> +#include <linux/slab.h> #define BUTTONS_POLL_INTERVAL 30 /* msec */ #define BUTTONS_COUNT_THRESHOLD 3 #define BUTTONS_STATUS_MASK 0xfe000000 +static const unsigned short cobalt_map[] = { + KEY_RESERVED, + KEY_RESTART, + KEY_LEFT, + KEY_UP, + KEY_DOWN, + KEY_RIGHT, + KEY_ENTER, + KEY_SELECT +}; + struct buttons_dev { struct input_polled_dev *poll_dev; + unsigned short keymap[ARRAY_SIZE(cobalt_map)]; + int count[ARRAY_SIZE(cobalt_map)]; 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; + status = ~readl(bdev->reg) >> 24; - for (i = 0; i < ARRAY_SIZE(buttons_map); i++) { - if (status & button->mask) { - button->count++; + for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) { + if (status & (1U << i)) { + if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) { + input_event(input, EV_MSC, MSC_SCAN, i); + input_report_key(input, bdev->keymap[i], 1); + input_sync(input); + } } else { - if (button->count >= BUTTONS_COUNT_THRESHOLD) { - input_report_key(input, button->keycode, 0); + if (bdev->count[i] >= BUTTONS_COUNT_THRESHOLD) { + input_event(input, EV_MSC, MSC_SCAN, i); + input_report_key(input, bdev->keymap[i], 0); input_sync(input); } - button->count = 0; + bdev->count[i] = 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) +static int cobalt_buttons_probe(struct platform_device *pdev) { struct buttons_dev *bdev; struct input_polled_dev *poll_dev; @@ -94,6 +87,8 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev) goto err_free_mem; } + memcpy(bdev->keymap, cobalt_map, sizeof(bdev->keymap)); + poll_dev->private = bdev; poll_dev->poll = handle_buttons; poll_dev->poll_interval = BUTTONS_POLL_INTERVAL; @@ -102,13 +97,17 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev) input->name = "Cobalt buttons"; input->phys = "cobalt/input0"; input->id.bustype = BUS_HOST; - input->cdev.dev = &pdev->dev; + input->dev.parent = &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; - } + input->keycode = bdev->keymap; + input->keycodemax = ARRAY_SIZE(bdev->keymap); + input->keycodesize = sizeof(unsigned short); + + input_set_capability(input, EV_MSC, MSC_SCAN); + __set_bit(EV_KEY, input->evbit); + for (i = 0; i < ARRAY_SIZE(cobalt_map); i++) + __set_bit(bdev->keymap[i], input->keybit); + __clear_bit(KEY_RESERVED, input->keybit); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { @@ -117,7 +116,7 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev) } bdev->poll_dev = poll_dev; - bdev->reg = ioremap(res->start, res->end - res->start + 1); + bdev->reg = ioremap(res->start, resource_size(res)); dev_set_drvdata(&pdev->dev, bdev); error = input_register_polled_device(poll_dev); @@ -131,11 +130,10 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev) 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) +static int cobalt_buttons_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct buttons_dev *bdev = dev_get_drvdata(dev); @@ -144,29 +142,22 @@ static int __devexit cobalt_buttons_remove(struct platform_device *pdev) input_free_polled_device(bdev->poll_dev); iounmap(bdev->reg); kfree(bdev); - dev_set_drvdata(dev, NULL); return 0; } +MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>"); +MODULE_DESCRIPTION("Cobalt button interface driver"); +MODULE_LICENSE("GPL"); +/* work with hotplug and coldplug */ +MODULE_ALIAS("platform:Cobalt buttons"); + static struct platform_driver cobalt_buttons_driver = { .probe = cobalt_buttons_probe, - .remove = __devexit_p(cobalt_buttons_remove), + .remove = 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); +module_platform_driver(cobalt_buttons_driver); |