To compile this driver as a module, choose M here: the module will be
called winbond_cir.
-config INPUT_GPIO
- tristate "GPIO driver support"
- help
- Say Y here if you want to support gpio based keys, wheels etc...
-
config HP_SDC_RTC
tristate "HP SDC Real Time Clock"
depends on (GSC || HP300) && SERIO
obj-$(CONFIG_INPUT_CM109) += cm109.o
obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
-obj-$(CONFIG_INPUT_GPIO) += gpio_event.o gpio_matrix.o gpio_input.o gpio_output.o gpio_axis.o
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o
obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o
+++ /dev/null
-/* drivers/input/misc/gpio_axis.c
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/gpio_event.h>
-#include <linux/interrupt.h>
-
-struct gpio_axis_state {
- struct input_dev *input_dev;
- struct gpio_event_axis_info *info;
- uint32_t pos;
-};
-
-uint16_t gpio_axis_4bit_gray_map_table[] = {
- [0x0] = 0x0, [0x1] = 0x1, /* 0000 0001 */
- [0x3] = 0x2, [0x2] = 0x3, /* 0011 0010 */
- [0x6] = 0x4, [0x7] = 0x5, /* 0110 0111 */
- [0x5] = 0x6, [0x4] = 0x7, /* 0101 0100 */
- [0xc] = 0x8, [0xd] = 0x9, /* 1100 1101 */
- [0xf] = 0xa, [0xe] = 0xb, /* 1111 1110 */
- [0xa] = 0xc, [0xb] = 0xd, /* 1010 1011 */
- [0x9] = 0xe, [0x8] = 0xf, /* 1001 1000 */
-};
-uint16_t gpio_axis_4bit_gray_map(struct gpio_event_axis_info *info, uint16_t in)
-{
- return gpio_axis_4bit_gray_map_table[in];
-}
-
-uint16_t gpio_axis_5bit_singletrack_map_table[] = {
- [0x10] = 0x00, [0x14] = 0x01, [0x1c] = 0x02, /* 10000 10100 11100 */
- [0x1e] = 0x03, [0x1a] = 0x04, [0x18] = 0x05, /* 11110 11010 11000 */
- [0x08] = 0x06, [0x0a] = 0x07, [0x0e] = 0x08, /* 01000 01010 01110 */
- [0x0f] = 0x09, [0x0d] = 0x0a, [0x0c] = 0x0b, /* 01111 01101 01100 */
- [0x04] = 0x0c, [0x05] = 0x0d, [0x07] = 0x0e, /* 00100 00101 00111 */
- [0x17] = 0x0f, [0x16] = 0x10, [0x06] = 0x11, /* 10111 10110 00110 */
- [0x02] = 0x12, [0x12] = 0x13, [0x13] = 0x14, /* 00010 10010 10011 */
- [0x1b] = 0x15, [0x0b] = 0x16, [0x03] = 0x17, /* 11011 01011 00011 */
- [0x01] = 0x18, [0x09] = 0x19, [0x19] = 0x1a, /* 00001 01001 11001 */
- [0x1d] = 0x1b, [0x15] = 0x1c, [0x11] = 0x1d, /* 11101 10101 10001 */
-};
-uint16_t gpio_axis_5bit_singletrack_map(
- struct gpio_event_axis_info *info, uint16_t in)
-{
- return gpio_axis_5bit_singletrack_map_table[in];
-}
-
-static void gpio_event_update_axis(struct gpio_axis_state *as, int report)
-{
- struct gpio_event_axis_info *ai = as->info;
- int i;
- int change;
- uint16_t state = 0;
- uint16_t pos;
- uint16_t old_pos = as->pos;
- for (i = ai->count - 1; i >= 0; i--)
- state = (state << 1) | gpio_get_value(ai->gpio[i]);
- pos = ai->map(ai, state);
- if (ai->flags & GPIOEAF_PRINT_RAW)
- pr_info("axis %d-%d raw %x, pos %d -> %d\n",
- ai->type, ai->code, state, old_pos, pos);
- if (report && pos != old_pos) {
- if (ai->type == EV_REL) {
- change = (ai->decoded_size + pos - old_pos) %
- ai->decoded_size;
- if (change > ai->decoded_size / 2)
- change -= ai->decoded_size;
- if (change == ai->decoded_size / 2) {
- if (ai->flags & GPIOEAF_PRINT_EVENT)
- pr_info("axis %d-%d unknown direction, "
- "pos %d -> %d\n", ai->type,
- ai->code, old_pos, pos);
- change = 0; /* no closest direction */
- }
- if (ai->flags & GPIOEAF_PRINT_EVENT)
- pr_info("axis %d-%d change %d\n",
- ai->type, ai->code, change);
- input_report_rel(as->input_dev, ai->code, change);
- } else {
- if (ai->flags & GPIOEAF_PRINT_EVENT)
- pr_info("axis %d-%d now %d\n",
- ai->type, ai->code, pos);
- input_event(as->input_dev, ai->type, ai->code, pos);
- }
- input_sync(as->input_dev);
- }
- as->pos = pos;
-}
-
-static irqreturn_t gpio_axis_irq_handler(int irq, void *dev_id)
-{
- struct gpio_axis_state *as = dev_id;
- gpio_event_update_axis(as, 1);
- return IRQ_HANDLED;
-}
-
-int gpio_event_axis_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func)
-{
- int ret;
- int i;
- int irq;
- struct gpio_event_axis_info *ai;
- struct gpio_axis_state *as;
-
- ai = container_of(info, struct gpio_event_axis_info, info);
- if (func == GPIO_EVENT_FUNC_SUSPEND) {
- for (i = 0; i < ai->count; i++)
- disable_irq(gpio_to_irq(ai->gpio[i]));
- return 0;
- }
- if (func == GPIO_EVENT_FUNC_RESUME) {
- for (i = 0; i < ai->count; i++)
- enable_irq(gpio_to_irq(ai->gpio[i]));
- return 0;
- }
-
- if (func == GPIO_EVENT_FUNC_INIT) {
- *data = as = kmalloc(sizeof(*as), GFP_KERNEL);
- if (as == NULL) {
- ret = -ENOMEM;
- goto err_alloc_axis_state_failed;
- }
- as->input_dev = input_dev;
- as->info = ai;
-
- input_set_capability(input_dev, ai->type, ai->code);
- if (ai->type == EV_ABS) {
- input_set_abs_params(input_dev, ai->code, 0,
- ai->decoded_size - 1, 0, 0);
- }
- for (i = 0; i < ai->count; i++) {
- ret = gpio_request(ai->gpio[i], "gpio_event_axis");
- if (ret < 0)
- goto err_request_gpio_failed;
- ret = gpio_direction_input(ai->gpio[i]);
- if (ret < 0)
- goto err_gpio_direction_input_failed;
- ret = irq = gpio_to_irq(ai->gpio[i]);
- if (ret < 0)
- goto err_get_irq_num_failed;
- ret = request_irq(irq, gpio_axis_irq_handler,
- IRQF_TRIGGER_RISING |
- IRQF_TRIGGER_FALLING,
- "gpio_event_axis", as);
- if (ret < 0)
- goto err_request_irq_failed;
- }
- gpio_event_update_axis(as, 0);
- return 0;
- }
-
- ret = 0;
- as = *data;
- for (i = ai->count - 1; i >= 0; i--) {
- free_irq(gpio_to_irq(ai->gpio[i]), as);
-err_request_irq_failed:
-err_get_irq_num_failed:
-err_gpio_direction_input_failed:
- gpio_free(ai->gpio[i]);
-err_request_gpio_failed:
- ;
- }
- kfree(as);
- *data = NULL;
-err_alloc_axis_state_failed:
- return ret;
-}
+++ /dev/null
-/* drivers/input/misc/gpio_event.c
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/earlysuspend.h>
-#include <linux/module.h>
-#include <linux/input.h>
-#include <linux/gpio_event.h>
-#include <linux/hrtimer.h>
-#include <linux/platform_device.h>
-
-struct gpio_event {
- struct input_dev *input_dev;
- const struct gpio_event_platform_data *info;
- struct early_suspend early_suspend;
- void *state[0];
-};
-
-static int gpio_input_event(
- struct input_dev *dev, unsigned int type, unsigned int code, int value)
-{
- int i;
- int ret = 0;
- int tmp_ret;
- struct gpio_event_info **ii;
- struct gpio_event *ip = input_get_drvdata(dev);
-
- for (i = 0, ii = ip->info->info; i < ip->info->info_count; i++, ii++) {
- if ((*ii)->event) {
- tmp_ret = (*ii)->event(ip->input_dev, *ii,
- &ip->state[i], type, code, value);
- if (tmp_ret)
- ret = tmp_ret;
- }
- }
- return ret;
-}
-
-static int gpio_event_call_all_func(struct gpio_event *ip, int func)
-{
- int i;
- int ret;
- struct gpio_event_info **ii;
-
- if (func == GPIO_EVENT_FUNC_INIT || func == GPIO_EVENT_FUNC_RESUME) {
- ii = ip->info->info;
- for (i = 0; i < ip->info->info_count; i++, ii++) {
- if ((*ii)->func == NULL) {
- ret = -ENODEV;
- pr_err("gpio_event_probe: Incomplete pdata, "
- "no function\n");
- goto err_no_func;
- }
- ret = (*ii)->func(ip->input_dev, *ii, &ip->state[i],
- func);
- if (ret) {
- pr_err("gpio_event_probe: function failed\n");
- goto err_func_failed;
- }
- }
- return 0;
- }
-
- ret = 0;
- i = ip->info->info_count;
- ii = ip->info->info + i;
- while (i > 0) {
- i--;
- ii--;
- (*ii)->func(ip->input_dev, *ii, &ip->state[i], func & ~1);
-err_func_failed:
-err_no_func:
- ;
- }
- return ret;
-}
-
-#ifdef CONFIG_HAS_EARLYSUSPEND
-void gpio_event_suspend(struct early_suspend *h)
-{
- struct gpio_event *ip;
- ip = container_of(h, struct gpio_event, early_suspend);
- gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_SUSPEND);
- ip->info->power(ip->info, 0);
-}
-
-void gpio_event_resume(struct early_suspend *h)
-{
- struct gpio_event *ip;
- ip = container_of(h, struct gpio_event, early_suspend);
- ip->info->power(ip->info, 1);
- gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_RESUME);
-}
-#endif
-
-static int __init gpio_event_probe(struct platform_device *pdev)
-{
- int err;
- struct gpio_event *ip;
- struct input_dev *input_dev;
- struct gpio_event_platform_data *event_info;
-
- event_info = pdev->dev.platform_data;
- if (event_info == NULL) {
- pr_err("gpio_event_probe: No pdata\n");
- return -ENODEV;
- }
- if (event_info->name == NULL ||
- event_info->info == NULL ||
- event_info->info_count == 0) {
- pr_err("gpio_event_probe: Incomplete pdata\n");
- return -ENODEV;
- }
- ip = kzalloc(sizeof(*ip) +
- sizeof(ip->state[0]) * event_info->info_count, GFP_KERNEL);
- if (ip == NULL) {
- err = -ENOMEM;
- pr_err("gpio_event_probe: Failed to allocate private data\n");
- goto err_kp_alloc_failed;
- }
- platform_set_drvdata(pdev, ip);
-
- input_dev = input_allocate_device();
- if (input_dev == NULL) {
- err = -ENOMEM;
- pr_err("gpio_event_probe: Failed to allocate input device\n");
- goto err_input_dev_alloc_failed;
- }
- input_set_drvdata(input_dev, ip);
- ip->input_dev = input_dev;
- ip->info = event_info;
- if (event_info->power) {
-#ifdef CONFIG_HAS_EARLYSUSPEND
- ip->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
- ip->early_suspend.suspend = gpio_event_suspend;
- ip->early_suspend.resume = gpio_event_resume;
- register_early_suspend(&ip->early_suspend);
-#endif
- ip->info->power(ip->info, 1);
- }
-
- input_dev->name = ip->info->name;
- input_dev->event = gpio_input_event;
-
- err = gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_INIT);
- if (err)
- goto err_call_all_func_failed;
-
- err = input_register_device(input_dev);
- if (err) {
- pr_err("gpio_event_probe: Unable to register %s input device\n",
- input_dev->name);
- goto err_input_register_device_failed;
- }
-
- return 0;
-
-err_input_register_device_failed:
- gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_UNINIT);
-err_call_all_func_failed:
- if (event_info->power) {
-#ifdef CONFIG_HAS_EARLYSUSPEND
- unregister_early_suspend(&ip->early_suspend);
-#endif
- ip->info->power(ip->info, 0);
- }
- input_free_device(input_dev);
-err_input_dev_alloc_failed:
- kfree(ip);
-err_kp_alloc_failed:
- return err;
-}
-
-static int gpio_event_remove(struct platform_device *pdev)
-{
- struct gpio_event *ip = platform_get_drvdata(pdev);
-
- gpio_event_call_all_func(ip, GPIO_EVENT_FUNC_UNINIT);
- if (ip->info->power) {
-#ifdef CONFIG_HAS_EARLYSUSPEND
- unregister_early_suspend(&ip->early_suspend);
-#endif
- ip->info->power(ip->info, 0);
- }
- input_unregister_device(ip->input_dev);
- kfree(ip);
- return 0;
-}
-
-static struct platform_driver gpio_event_driver = {
- .probe = gpio_event_probe,
- .remove = gpio_event_remove,
- .driver = {
- .name = GPIO_EVENT_DEV_NAME,
- },
-};
-
-static int __devinit gpio_event_init(void)
-{
- return platform_driver_register(&gpio_event_driver);
-}
-
-static void __exit gpio_event_exit(void)
-{
- platform_driver_unregister(&gpio_event_driver);
-}
-
-module_init(gpio_event_init);
-module_exit(gpio_event_exit);
-
-MODULE_DESCRIPTION("GPIO Event Driver");
-MODULE_LICENSE("GPL");
-
+++ /dev/null
-/* drivers/input/misc/gpio_input.c
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/gpio_event.h>
-#include <linux/hrtimer.h>
-#include <linux/input.h>
-#include <linux/interrupt.h>
-#include <linux/wakelock.h>
-
-enum {
- DEBOUNCE_UNSTABLE = BIT(0), /* Got irq, while debouncing */
- DEBOUNCE_PRESSED = BIT(1),
- DEBOUNCE_NOTPRESSED = BIT(2),
- DEBOUNCE_WAIT_IRQ = BIT(3), /* Stable irq state */
- DEBOUNCE_POLL = BIT(4), /* Stable polling state */
-
- DEBOUNCE_UNKNOWN =
- DEBOUNCE_PRESSED | DEBOUNCE_NOTPRESSED,
-};
-
-struct gpio_key_state {
- struct gpio_input_state *ds;
- uint8_t debounce;
-};
-
-struct gpio_input_state {
- struct input_dev *input_dev;
- const struct gpio_event_input_info *info;
- struct hrtimer timer;
- int use_irq;
- int debounce_count;
- spinlock_t irq_lock;
- struct wake_lock wake_lock;
- struct gpio_key_state key_state[0];
-};
-
-static enum hrtimer_restart gpio_event_input_timer_func(struct hrtimer *timer)
-{
- int i;
- int pressed;
- struct gpio_input_state *ds =
- container_of(timer, struct gpio_input_state, timer);
- unsigned gpio_flags = ds->info->flags;
- unsigned npolarity;
- int nkeys = ds->info->keymap_size;
- const struct gpio_event_direct_entry *key_entry;
- struct gpio_key_state *key_state;
- unsigned long irqflags;
- uint8_t debounce;
-
-#if 0
- key_entry = kp->keys_info->keymap;
- key_state = kp->key_state;
- for (i = 0; i < nkeys; i++, key_entry++, key_state++)
- pr_info("gpio_read_detect_status %d %d\n", key_entry->gpio,
- gpio_read_detect_status(key_entry->gpio));
-#endif
- key_entry = ds->info->keymap;
- key_state = ds->key_state;
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- for (i = 0; i < nkeys; i++, key_entry++, key_state++) {
- debounce = key_state->debounce;
- if (debounce & DEBOUNCE_WAIT_IRQ)
- continue;
- if (key_state->debounce & DEBOUNCE_UNSTABLE) {
- debounce = key_state->debounce = DEBOUNCE_UNKNOWN;
- enable_irq(gpio_to_irq(key_entry->gpio));
- pr_info("gpio_keys_scan_keys: key %x-%x, %d "
- "(%d) continue debounce\n",
- ds->info->type, key_entry->code,
- i, key_entry->gpio);
- }
- npolarity = !(gpio_flags & GPIOEDF_ACTIVE_HIGH);
- pressed = gpio_get_value(key_entry->gpio) ^ npolarity;
- if (debounce & DEBOUNCE_POLL) {
- if (pressed == !(debounce & DEBOUNCE_PRESSED)) {
- ds->debounce_count++;
- key_state->debounce = DEBOUNCE_UNKNOWN;
- if (gpio_flags & GPIOEDF_PRINT_KEY_DEBOUNCE)
- pr_info("gpio_keys_scan_keys: key %x-"
- "%x, %d (%d) start debounce\n",
- ds->info->type, key_entry->code,
- i, key_entry->gpio);
- }
- continue;
- }
- if (pressed && (debounce & DEBOUNCE_NOTPRESSED)) {
- if (gpio_flags & GPIOEDF_PRINT_KEY_DEBOUNCE)
- pr_info("gpio_keys_scan_keys: key %x-%x, %d "
- "(%d) debounce pressed 1\n",
- ds->info->type, key_entry->code,
- i, key_entry->gpio);
- key_state->debounce = DEBOUNCE_PRESSED;
- continue;
- }
- if (!pressed && (debounce & DEBOUNCE_PRESSED)) {
- if (gpio_flags & GPIOEDF_PRINT_KEY_DEBOUNCE)
- pr_info("gpio_keys_scan_keys: key %x-%x, %d "
- "(%d) debounce pressed 0\n",
- ds->info->type, key_entry->code,
- i, key_entry->gpio);
- key_state->debounce = DEBOUNCE_NOTPRESSED;
- continue;
- }
- /* key is stable */
- ds->debounce_count--;
- if (ds->use_irq)
- key_state->debounce |= DEBOUNCE_WAIT_IRQ;
- else
- key_state->debounce |= DEBOUNCE_POLL;
- if (gpio_flags & GPIOEDF_PRINT_KEYS)
- pr_info("gpio_keys_scan_keys: key %x-%x, %d (%d) "
- "changed to %d\n", ds->info->type,
- key_entry->code, i, key_entry->gpio, pressed);
- input_event(ds->input_dev, ds->info->type,
- key_entry->code, pressed);
- }
-
-#if 0
- key_entry = kp->keys_info->keymap;
- key_state = kp->key_state;
- for (i = 0; i < nkeys; i++, key_entry++, key_state++) {
- pr_info("gpio_read_detect_status %d %d\n", key_entry->gpio,
- gpio_read_detect_status(key_entry->gpio));
- }
-#endif
-
- if (ds->debounce_count)
- hrtimer_start(timer, ds->info->debounce_time, HRTIMER_MODE_REL);
- else if (!ds->use_irq)
- hrtimer_start(timer, ds->info->poll_time, HRTIMER_MODE_REL);
- else
- wake_unlock(&ds->wake_lock);
-
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
-
- return HRTIMER_NORESTART;
-}
-
-static irqreturn_t gpio_event_input_irq_handler(int irq, void *dev_id)
-{
- struct gpio_key_state *ks = dev_id;
- struct gpio_input_state *ds = ks->ds;
- int keymap_index = ks - ds->key_state;
- const struct gpio_event_direct_entry *key_entry;
- unsigned long irqflags;
- int pressed;
-
- if (!ds->use_irq)
- return IRQ_HANDLED;
-
- key_entry = &ds->info->keymap[keymap_index];
-
- if (ds->info->debounce_time.tv64) {
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- if (ks->debounce & DEBOUNCE_WAIT_IRQ) {
- ks->debounce = DEBOUNCE_UNKNOWN;
- if (ds->debounce_count++ == 0) {
- wake_lock(&ds->wake_lock);
- hrtimer_start(
- &ds->timer, ds->info->debounce_time,
- HRTIMER_MODE_REL);
- }
- if (ds->info->flags & GPIOEDF_PRINT_KEY_DEBOUNCE)
- pr_info("gpio_event_input_irq_handler: "
- "key %x-%x, %d (%d) start debounce\n",
- ds->info->type, key_entry->code,
- keymap_index, key_entry->gpio);
- } else {
- disable_irq(irq);
- ks->debounce = DEBOUNCE_UNSTABLE;
- }
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
- } else {
- pressed = gpio_get_value(key_entry->gpio) ^
- !(ds->info->flags & GPIOEDF_ACTIVE_HIGH);
- if (ds->info->flags & GPIOEDF_PRINT_KEYS)
- pr_info("gpio_event_input_irq_handler: key %x-%x, %d "
- "(%d) changed to %d\n",
- ds->info->type, key_entry->code, keymap_index,
- key_entry->gpio, pressed);
- input_event(ds->input_dev, ds->info->type,
- key_entry->code, pressed);
- }
- return IRQ_HANDLED;
-}
-
-static int gpio_event_input_request_irqs(struct gpio_input_state *ds)
-{
- int i;
- int err;
- unsigned int irq;
- unsigned long req_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
-
- for (i = 0; i < ds->info->keymap_size; i++) {
- err = irq = gpio_to_irq(ds->info->keymap[i].gpio);
- if (err < 0)
- goto err_gpio_get_irq_num_failed;
- err = request_irq(irq, gpio_event_input_irq_handler,
- req_flags, "gpio_keys", &ds->key_state[i]);
- if (err) {
- pr_err("gpio_event_input_request_irqs: request_irq "
- "failed for input %d, irq %d\n",
- ds->info->keymap[i].gpio, irq);
- goto err_request_irq_failed;
- }
- enable_irq_wake(irq);
- }
- return 0;
-
- for (i = ds->info->keymap_size - 1; i >= 0; i--) {
- free_irq(gpio_to_irq(ds->info->keymap[i].gpio),
- &ds->key_state[i]);
-err_request_irq_failed:
-err_gpio_get_irq_num_failed:
- ;
- }
- return err;
-}
-
-int gpio_event_input_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func)
-{
- int ret;
- int i;
- unsigned long irqflags;
- struct gpio_event_input_info *di;
- struct gpio_input_state *ds = *data;
-
- di = container_of(info, struct gpio_event_input_info, info);
-
- if (func == GPIO_EVENT_FUNC_SUSPEND) {
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- if (ds->use_irq)
- for (i = 0; i < di->keymap_size; i++)
- disable_irq(gpio_to_irq(di->keymap[i].gpio));
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
- hrtimer_cancel(&ds->timer);
- return 0;
- }
- if (func == GPIO_EVENT_FUNC_RESUME) {
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- if (ds->use_irq)
- for (i = 0; i < di->keymap_size; i++)
- enable_irq(gpio_to_irq(di->keymap[i].gpio));
- hrtimer_start(&ds->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
- return 0;
- }
-
- if (func == GPIO_EVENT_FUNC_INIT) {
- if (ktime_to_ns(di->poll_time) <= 0)
- di->poll_time = ktime_set(0, 20 * NSEC_PER_MSEC);
-
- *data = ds = kzalloc(sizeof(*ds) + sizeof(ds->key_state[0]) *
- di->keymap_size, GFP_KERNEL);
- if (ds == NULL) {
- ret = -ENOMEM;
- pr_err("gpio_event_input_func: "
- "Failed to allocate private data\n");
- goto err_ds_alloc_failed;
- }
- ds->debounce_count = di->keymap_size;
- ds->input_dev = input_dev;
- ds->info = di;
- wake_lock_init(&ds->wake_lock, WAKE_LOCK_SUSPEND, "gpio_input");
- spin_lock_init(&ds->irq_lock);
-
- for (i = 0; i < di->keymap_size; i++) {
- input_set_capability(input_dev, di->type,
- di->keymap[i].code);
- ds->key_state[i].ds = ds;
- ds->key_state[i].debounce = DEBOUNCE_UNKNOWN;
- }
-
- for (i = 0; i < di->keymap_size; i++) {
- ret = gpio_request(di->keymap[i].gpio, "gpio_kp_in");
- if (ret) {
- pr_err("gpio_event_input_func: gpio_request "
- "failed for %d\n", di->keymap[i].gpio);
- goto err_gpio_request_failed;
- }
- ret = gpio_direction_input(di->keymap[i].gpio);
- if (ret) {
- pr_err("gpio_event_input_func: "
- "gpio_direction_input failed for %d\n",
- di->keymap[i].gpio);
- goto err_gpio_configure_failed;
- }
- }
-
- ret = gpio_event_input_request_irqs(ds);
-
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- ds->use_irq = ret == 0;
-
- pr_info("GPIO Input Driver: Start gpio inputs for %s in %s "
- "mode\n",
- input_dev->name, ret == 0 ? "interrupt" : "polling");
-
- hrtimer_init(&ds->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- ds->timer.function = gpio_event_input_timer_func;
- hrtimer_start(&ds->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
- return 0;
- }
-
- ret = 0;
- spin_lock_irqsave(&ds->irq_lock, irqflags);
- hrtimer_cancel(&ds->timer);
- if (ds->use_irq) {
- for (i = di->keymap_size - 1; i >= 0; i--) {
- free_irq(gpio_to_irq(di->keymap[i].gpio),
- &ds->key_state[i]);
- }
- }
- spin_unlock_irqrestore(&ds->irq_lock, irqflags);
-
- for (i = di->keymap_size - 1; i >= 0; i--) {
-err_gpio_configure_failed:
- gpio_free(di->keymap[i].gpio);
-err_gpio_request_failed:
- ;
- }
- wake_lock_destroy(&ds->wake_lock);
- kfree(ds);
-err_ds_alloc_failed:
- return ret;
-}
+++ /dev/null
-/* drivers/input/misc/gpio_matrix.c
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/gpio_event.h>
-#include <linux/hrtimer.h>
-#include <linux/interrupt.h>
-#include <linux/wakelock.h>
-
-struct gpio_kp {
- struct input_dev *input_dev;
- struct gpio_event_matrix_info *keypad_info;
- struct hrtimer timer;
- struct wake_lock wake_lock;
- int current_output;
- unsigned int use_irq:1;
- unsigned int key_state_changed:1;
- unsigned int last_key_state_changed:1;
- unsigned int some_keys_pressed:2;
- unsigned long keys_pressed[0];
-};
-
-static void clear_phantom_key(struct gpio_kp *kp, int out, int in)
-{
- struct gpio_event_matrix_info *mi = kp->keypad_info;
- int key_index = out * mi->ninputs + in;
- unsigned short keycode = mi->keymap[key_index];;
-
- if (!test_bit(keycode, kp->input_dev->key)) {
- if (mi->flags & GPIOKPF_PRINT_PHANTOM_KEYS)
- pr_info("gpiomatrix: phantom key %x, %d-%d (%d-%d) "
- "cleared\n", keycode, out, in,
- mi->output_gpios[out], mi->input_gpios[in]);
- __clear_bit(key_index, kp->keys_pressed);
- } else {
- if (mi->flags & GPIOKPF_PRINT_PHANTOM_KEYS)
- pr_info("gpiomatrix: phantom key %x, %d-%d (%d-%d) "
- "not cleared\n", keycode, out, in,
- mi->output_gpios[out], mi->input_gpios[in]);
- }
-}
-
-static int restore_keys_for_input(struct gpio_kp *kp, int out, int in)
-{
- int rv = 0;
- int key_index;
-
- key_index = out * kp->keypad_info->ninputs + in;
- while (out < kp->keypad_info->noutputs) {
- if (test_bit(key_index, kp->keys_pressed)) {
- rv = 1;
- clear_phantom_key(kp, out, in);
- }
- key_index += kp->keypad_info->ninputs;
- out++;
- }
- return rv;
-}
-
-static void remove_phantom_keys(struct gpio_kp *kp)
-{
- int out, in, inp;
- int key_index;
-
- if (kp->some_keys_pressed < 3)
- return;
-
- for (out = 0; out < kp->keypad_info->noutputs; out++) {
- inp = -1;
- key_index = out * kp->keypad_info->ninputs;
- for (in = 0; in < kp->keypad_info->ninputs; in++, key_index++) {
- if (test_bit(key_index, kp->keys_pressed)) {
- if (inp == -1) {
- inp = in;
- continue;
- }
- if (inp >= 0) {
- if (!restore_keys_for_input(kp, out + 1,
- inp))
- break;
- clear_phantom_key(kp, out, inp);
- inp = -2;
- }
- restore_keys_for_input(kp, out, in);
- }
- }
- }
-}
-
-static void report_key(struct gpio_kp *kp, int key_index, int out, int in)
-{
- struct gpio_event_matrix_info *mi = kp->keypad_info;
- int pressed = test_bit(key_index, kp->keys_pressed);
- unsigned short keycode = mi->keymap[key_index];
- if (pressed != test_bit(keycode, kp->input_dev->key)) {
- if (keycode == KEY_RESERVED) {
- if (mi->flags & GPIOKPF_PRINT_UNMAPPED_KEYS)
- pr_info("gpiomatrix: unmapped key, %d-%d "
- "(%d-%d) changed to %d\n",
- out, in, mi->output_gpios[out],
- mi->input_gpios[in], pressed);
- } else {
- if (mi->flags & GPIOKPF_PRINT_MAPPED_KEYS)
- pr_info("gpiomatrix: key %x, %d-%d (%d-%d) "
- "changed to %d\n", keycode,
- out, in, mi->output_gpios[out],
- mi->input_gpios[in], pressed);
- input_report_key(kp->input_dev, keycode, pressed);
- }
- }
-}
-
-static enum hrtimer_restart gpio_keypad_timer_func(struct hrtimer *timer)
-{
- int out, in;
- int key_index;
- int gpio;
- struct gpio_kp *kp = container_of(timer, struct gpio_kp, timer);
- struct gpio_event_matrix_info *mi = kp->keypad_info;
- unsigned gpio_keypad_flags = mi->flags;
- unsigned polarity = !!(gpio_keypad_flags & GPIOKPF_ACTIVE_HIGH);
-
- out = kp->current_output;
- if (out == mi->noutputs) {
- out = 0;
- kp->last_key_state_changed = kp->key_state_changed;
- kp->key_state_changed = 0;
- kp->some_keys_pressed = 0;
- } else {
- key_index = out * mi->ninputs;
- for (in = 0; in < mi->ninputs; in++, key_index++) {
- gpio = mi->input_gpios[in];
- if (gpio_get_value(gpio) ^ !polarity) {
- if (kp->some_keys_pressed < 3)
- kp->some_keys_pressed++;
- kp->key_state_changed |= !__test_and_set_bit(
- key_index, kp->keys_pressed);
- } else
- kp->key_state_changed |= __test_and_clear_bit(
- key_index, kp->keys_pressed);
- }
- gpio = mi->output_gpios[out];
- if (gpio_keypad_flags & GPIOKPF_DRIVE_INACTIVE)
- gpio_set_value(gpio, !polarity);
- else
- gpio_direction_input(gpio);
- out++;
- }
- kp->current_output = out;
- if (out < mi->noutputs) {
- gpio = mi->output_gpios[out];
- if (gpio_keypad_flags & GPIOKPF_DRIVE_INACTIVE)
- gpio_set_value(gpio, polarity);
- else
- gpio_direction_output(gpio, polarity);
- hrtimer_start(timer, mi->settle_time, HRTIMER_MODE_REL);
- return HRTIMER_NORESTART;
- }
- if (gpio_keypad_flags & GPIOKPF_DEBOUNCE) {
- if (kp->key_state_changed) {
- hrtimer_start(&kp->timer, mi->debounce_delay,
- HRTIMER_MODE_REL);
- return HRTIMER_NORESTART;
- }
- kp->key_state_changed = kp->last_key_state_changed;
- }
- if (kp->key_state_changed) {
- if (gpio_keypad_flags & GPIOKPF_REMOVE_SOME_PHANTOM_KEYS)
- remove_phantom_keys(kp);
- key_index = 0;
- for (out = 0; out < mi->noutputs; out++)
- for (in = 0; in < mi->ninputs; in++, key_index++)
- report_key(kp, key_index, out, in);
- }
- if (!kp->use_irq || kp->some_keys_pressed) {
- hrtimer_start(timer, mi->poll_time, HRTIMER_MODE_REL);
- return HRTIMER_NORESTART;
- }
-
- /* No keys are pressed, reenable interrupt */
- for (out = 0; out < mi->noutputs; out++) {
- if (gpio_keypad_flags & GPIOKPF_DRIVE_INACTIVE)
- gpio_set_value(mi->output_gpios[out], polarity);
- else
- gpio_direction_output(mi->output_gpios[out], polarity);
- }
- for (in = 0; in < mi->ninputs; in++)
- enable_irq(gpio_to_irq(mi->input_gpios[in]));
- wake_unlock(&kp->wake_lock);
- return HRTIMER_NORESTART;
-}
-
-static irqreturn_t gpio_keypad_irq_handler(int irq_in, void *dev_id)
-{
- int i;
- struct gpio_kp *kp = dev_id;
- struct gpio_event_matrix_info *mi = kp->keypad_info;
- unsigned gpio_keypad_flags = mi->flags;
-
- if (!kp->use_irq) /* ignore interrupt while registering the handler */
- return IRQ_HANDLED;
-
- for (i = 0; i < mi->ninputs; i++)
- disable_irq(gpio_to_irq(mi->input_gpios[i]));
- for (i = 0; i < mi->noutputs; i++) {
- if (gpio_keypad_flags & GPIOKPF_DRIVE_INACTIVE)
- gpio_set_value(mi->output_gpios[i],
- !(gpio_keypad_flags & GPIOKPF_ACTIVE_HIGH));
- else
- gpio_direction_input(mi->output_gpios[i]);
- }
- wake_lock(&kp->wake_lock);
- hrtimer_start(&kp->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
- return IRQ_HANDLED;
-}
-
-static int gpio_keypad_request_irqs(struct gpio_kp *kp)
-{
- int i;
- int err;
- unsigned int irq;
- unsigned long request_flags;
- struct gpio_event_matrix_info *mi = kp->keypad_info;
-
- switch (mi->flags & (GPIOKPF_ACTIVE_HIGH|GPIOKPF_LEVEL_TRIGGERED_IRQ)) {
- default:
- request_flags = IRQF_TRIGGER_FALLING;
- break;
- case GPIOKPF_ACTIVE_HIGH:
- request_flags = IRQF_TRIGGER_RISING;
- break;
- case GPIOKPF_LEVEL_TRIGGERED_IRQ:
- request_flags = IRQF_TRIGGER_LOW;
- break;
- case GPIOKPF_LEVEL_TRIGGERED_IRQ | GPIOKPF_ACTIVE_HIGH:
- request_flags = IRQF_TRIGGER_HIGH;
- break;
- }
-
- for (i = 0; i < mi->ninputs; i++) {
- err = irq = gpio_to_irq(mi->input_gpios[i]);
- if (err < 0)
- goto err_gpio_get_irq_num_failed;
- err = request_irq(irq, gpio_keypad_irq_handler, request_flags,
- "gpio_kp", kp);
- if (err) {
- pr_err("gpiomatrix: request_irq failed for input %d, "
- "irq %d\n", mi->input_gpios[i], irq);
- goto err_request_irq_failed;
- }
- err = set_irq_wake(irq, 1);
- if (err) {
- pr_err("gpiomatrix: set_irq_wake failed for input %d, "
- "irq %d\n", mi->input_gpios[i], irq);
- }
- disable_irq(irq);
- }
- return 0;
-
- for (i = mi->noutputs - 1; i >= 0; i--) {
- free_irq(gpio_to_irq(mi->input_gpios[i]), kp);
-err_request_irq_failed:
-err_gpio_get_irq_num_failed:
- ;
- }
- return err;
-}
-
-int gpio_event_matrix_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func)
-{
- int i;
- int err;
- int key_count;
- struct gpio_kp *kp;
- struct gpio_event_matrix_info *mi;
-
- mi = container_of(info, struct gpio_event_matrix_info, info);
- if (func == GPIO_EVENT_FUNC_SUSPEND || func == GPIO_EVENT_FUNC_RESUME) {
- /* TODO: disable scanning */
- return 0;
- }
-
- if (func == GPIO_EVENT_FUNC_INIT) {
- if (mi->keymap == NULL ||
- mi->input_gpios == NULL ||
- mi->output_gpios == NULL) {
- err = -ENODEV;
- pr_err("gpiomatrix: Incomplete pdata\n");
- goto err_invalid_platform_data;
- }
- key_count = mi->ninputs * mi->noutputs;
-
- *data = kp = kzalloc(sizeof(*kp) + sizeof(kp->keys_pressed[0]) *
- BITS_TO_LONGS(key_count), GFP_KERNEL);
- if (kp == NULL) {
- err = -ENOMEM;
- pr_err("gpiomatrix: Failed to allocate private data\n");
- goto err_kp_alloc_failed;
- }
- kp->input_dev = input_dev;
- kp->keypad_info = mi;
- set_bit(EV_KEY, input_dev->evbit);
- for (i = 0; i < key_count; i++) {
- if (mi->keymap[i])
- set_bit(mi->keymap[i] & KEY_MAX,
- input_dev->keybit);
- }
-
- for (i = 0; i < mi->noutputs; i++) {
- if (gpio_cansleep(mi->output_gpios[i])) {
- pr_err("gpiomatrix: unsupported output gpio %d,"
- " can sleep\n", mi->output_gpios[i]);
- err = -EINVAL;
- goto err_request_output_gpio_failed;
- }
- err = gpio_request(mi->output_gpios[i], "gpio_kp_out");
- if (err) {
- pr_err("gpiomatrix: gpio_request failed for "
- "output %d\n", mi->output_gpios[i]);
- goto err_request_output_gpio_failed;
- }
- if (mi->flags & GPIOKPF_DRIVE_INACTIVE)
- err = gpio_direction_output(mi->output_gpios[i],
- !(mi->flags & GPIOKPF_ACTIVE_HIGH));
- else
- err = gpio_direction_input(mi->output_gpios[i]);
- if (err) {
- pr_err("gpiomatrix: gpio_configure failed for "
- "output %d\n", mi->output_gpios[i]);
- goto err_output_gpio_configure_failed;
- }
- }
- for (i = 0; i < mi->ninputs; i++) {
- err = gpio_request(mi->input_gpios[i], "gpio_kp_in");
- if (err) {
- pr_err("gpiomatrix: gpio_request failed for "
- "input %d\n", mi->input_gpios[i]);
- goto err_request_input_gpio_failed;
- }
- err = gpio_direction_input(mi->input_gpios[i]);
- if (err) {
- pr_err("gpiomatrix: gpio_direction_input failed"
- " for input %d\n", mi->input_gpios[i]);
- goto err_gpio_direction_input_failed;
- }
- }
- kp->current_output = mi->noutputs;
- kp->key_state_changed = 1;
-
- hrtimer_init(&kp->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- kp->timer.function = gpio_keypad_timer_func;
- wake_lock_init(&kp->wake_lock, WAKE_LOCK_SUSPEND, "gpio_kp");
- err = gpio_keypad_request_irqs(kp);
- kp->use_irq = err == 0;
-
- pr_info("GPIO Matrix Keypad Driver: Start keypad matrix for %s "
- "in %s mode\n", input_dev->name,
- kp->use_irq ? "interrupt" : "polling");
-
- if (kp->use_irq)
- wake_lock(&kp->wake_lock);
- hrtimer_start(&kp->timer, ktime_set(0, 0), HRTIMER_MODE_REL);
-
- return 0;
- }
-
- err = 0;
- kp = *data;
-
- if (kp->use_irq)
- for (i = mi->noutputs - 1; i >= 0; i--)
- free_irq(gpio_to_irq(mi->input_gpios[i]), kp);
-
- hrtimer_cancel(&kp->timer);
- wake_lock_destroy(&kp->wake_lock);
- for (i = mi->noutputs - 1; i >= 0; i--) {
-err_gpio_direction_input_failed:
- gpio_free(mi->input_gpios[i]);
-err_request_input_gpio_failed:
- ;
- }
- for (i = mi->noutputs - 1; i >= 0; i--) {
-err_output_gpio_configure_failed:
- gpio_free(mi->output_gpios[i]);
-err_request_output_gpio_failed:
- ;
- }
- kfree(kp);
-err_kp_alloc_failed:
-err_invalid_platform_data:
- return err;
-}
+++ /dev/null
-/* drivers/input/misc/gpio_output.c
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/gpio.h>
-#include <linux/gpio_event.h>
-
-int gpio_event_output_event(
- struct input_dev *input_dev, struct gpio_event_info *info, void **data,
- unsigned int type, unsigned int code, int value)
-{
- int i;
- struct gpio_event_output_info *oi;
- oi = container_of(info, struct gpio_event_output_info, info);
- if (type != oi->type)
- return 0;
- if (!(oi->flags & GPIOEDF_ACTIVE_HIGH))
- value = !value;
- for (i = 0; i < oi->keymap_size; i++)
- if (code == oi->keymap[i].code)
- gpio_set_value(oi->keymap[i].gpio, value);
- return 0;
-}
-
-int gpio_event_output_func(
- struct input_dev *input_dev, struct gpio_event_info *info, void **data,
- int func)
-{
- int ret;
- int i;
- struct gpio_event_output_info *oi;
- oi = container_of(info, struct gpio_event_output_info, info);
-
- if (func == GPIO_EVENT_FUNC_SUSPEND || func == GPIO_EVENT_FUNC_RESUME)
- return 0;
-
- if (func == GPIO_EVENT_FUNC_INIT) {
- int output_level = !(oi->flags & GPIOEDF_ACTIVE_HIGH);
- for (i = 0; i < oi->keymap_size; i++)
- input_set_capability(input_dev, oi->type,
- oi->keymap[i].code);
-
- for (i = 0; i < oi->keymap_size; i++) {
- ret = gpio_request(oi->keymap[i].gpio,
- "gpio_event_output");
- if (ret) {
- pr_err("gpio_event_output_func: gpio_request "
- "failed for %d\n", oi->keymap[i].gpio);
- goto err_gpio_request_failed;
- }
- ret = gpio_direction_output(oi->keymap[i].gpio,
- output_level);
- if (ret) {
- pr_err("gpio_event_output_func: "
- "gpio_direction_output failed for %d\n",
- oi->keymap[i].gpio);
- goto err_gpio_direction_output_failed;
- }
- }
- return 0;
- }
-
- ret = 0;
- for (i = oi->keymap_size - 1; i >= 0; i--) {
-err_gpio_direction_output_failed:
- gpio_free(oi->keymap[i].gpio);
-err_gpio_request_failed:
- ;
- }
- return ret;
-}
-
+++ /dev/null
-/* include/linux/gpio_event.h
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
- */
-
-#ifndef _LINUX_GPIO_EVENT_H
-#define _LINUX_GPIO_EVENT_H
-
-#include <linux/input.h>
-
-enum {
- GPIO_EVENT_FUNC_UNINIT = 0x0,
- GPIO_EVENT_FUNC_INIT = 0x1,
- GPIO_EVENT_FUNC_SUSPEND = 0x2,
- GPIO_EVENT_FUNC_RESUME = 0x3,
-};
-struct gpio_event_info {
- int (*func)(struct input_dev *input_dev,
- struct gpio_event_info *info,
- void **data, int func);
- int (*event)(struct input_dev *input_dev,
- struct gpio_event_info *info,
- void **data, unsigned int type,
- unsigned int code, int value); /* out events */
-};
-
-struct gpio_event_platform_data {
- const char *name;
- struct gpio_event_info **info;
- size_t info_count;
- int (*power)(const struct gpio_event_platform_data *pdata, bool on);
-};
-
-#define GPIO_EVENT_DEV_NAME "gpio-event"
-
-/* Key matrix */
-
-enum gpio_event_matrix_flags {
- /* unset: drive active output low, set: drive active output high */
- GPIOKPF_ACTIVE_HIGH = 1U << 0,
- GPIOKPF_DEBOUNCE = 1U << 1,
- GPIOKPF_REMOVE_SOME_PHANTOM_KEYS = 1U << 2,
- GPIOKPF_REMOVE_PHANTOM_KEYS = GPIOKPF_REMOVE_SOME_PHANTOM_KEYS |
- GPIOKPF_DEBOUNCE,
- GPIOKPF_DRIVE_INACTIVE = 1U << 3,
- GPIOKPF_LEVEL_TRIGGERED_IRQ = 1U << 4,
- GPIOKPF_PRINT_UNMAPPED_KEYS = 1U << 16,
- GPIOKPF_PRINT_MAPPED_KEYS = 1U << 17,
- GPIOKPF_PRINT_PHANTOM_KEYS = 1U << 18,
-};
-
-extern int gpio_event_matrix_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func);
-struct gpio_event_matrix_info {
- /* initialize to gpio_event_matrix_func */
- struct gpio_event_info info;
- /* size must be ninputs * noutputs */
- const unsigned short *keymap;
- unsigned int *input_gpios;
- unsigned int *output_gpios;
- unsigned int ninputs;
- unsigned int noutputs;
- /* time to wait before reading inputs after driving each output */
- ktime_t settle_time;
- /* time to wait before scanning the keypad a second time */
- ktime_t debounce_delay;
- ktime_t poll_time;
- unsigned flags;
-};
-
-/* Directly connected inputs and outputs */
-
-enum gpio_event_direct_flags {
- GPIOEDF_ACTIVE_HIGH = 1U << 0,
-/* GPIOEDF_USE_DOWN_IRQ = 1U << 1, */
-/* GPIOEDF_USE_IRQ = (1U << 2) | GPIOIDF_USE_DOWN_IRQ, */
- GPIOEDF_PRINT_KEYS = 1U << 8,
- GPIOEDF_PRINT_KEY_DEBOUNCE = 1U << 9,
-};
-
-struct gpio_event_direct_entry {
- uint32_t gpio:23;
- uint32_t code:9;
-};
-
-/* inputs */
-extern int gpio_event_input_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func);
-struct gpio_event_input_info {
- /* initialize to gpio_event_input_func */
- struct gpio_event_info info;
- ktime_t debounce_time;
- ktime_t poll_time;
- uint16_t flags;
- uint16_t type;
- const struct gpio_event_direct_entry *keymap;
- size_t keymap_size;
-};
-
-/* outputs */
-extern int gpio_event_output_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func);
-extern int gpio_event_output_event(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data,
- unsigned int type, unsigned int code, int value);
-struct gpio_event_output_info {
- /* initialize to gpio_event_output_func and gpio_event_output_event */
- struct gpio_event_info info;
- uint16_t flags;
- uint16_t type;
- const struct gpio_event_direct_entry *keymap;
- size_t keymap_size;
-};
-
-
-/* axes */
-
-enum gpio_event_axis_flags {
- GPIOEAF_PRINT_UNKNOWN_DIRECTION = 1U << 16,
- GPIOEAF_PRINT_RAW = 1U << 17,
- GPIOEAF_PRINT_EVENT = 1U << 18,
-};
-
-extern int gpio_event_axis_func(struct input_dev *input_dev,
- struct gpio_event_info *info, void **data, int func);
-struct gpio_event_axis_info {
- /* initialize to gpio_event_axis_func */
- struct gpio_event_info info;
- uint8_t count;
- uint8_t type; /* EV_REL or EV_ABS */
- uint16_t code;
- uint16_t decoded_size;
- uint16_t (*map)(struct gpio_event_axis_info *info, uint16_t in);
- uint32_t *gpio;
- uint32_t flags;
-};
-#define gpio_axis_2bit_gray_map gpio_axis_4bit_gray_map
-#define gpio_axis_3bit_gray_map gpio_axis_4bit_gray_map
-uint16_t gpio_axis_4bit_gray_map(
- struct gpio_event_axis_info *info, uint16_t in);
-uint16_t gpio_axis_5bit_singletrack_map(
- struct gpio_event_axis_info *info, uint16_t in);
-
-#endif
projects / firefly-linux-kernel-4.4.55.git / commitdiff