From 57fa7b7e18f776c71053799af4b926717a50007f Mon Sep 17 00:00:00 2001 From: =?utf8?q?=E9=BB=84=E6=B6=9B?= Date: Sat, 30 Jul 2011 22:56:11 +0800 Subject: [PATCH] Revert "Input: Generic GPIO Input device." This reverts commit cbc1c940b59973fafcd1e78648144d4e0024174e. --- drivers/input/misc/Kconfig | 5 - drivers/input/misc/Makefile | 1 - drivers/input/misc/gpio_axis.c | 180 -------------- drivers/input/misc/gpio_event.c | 224 ----------------- drivers/input/misc/gpio_input.c | 343 -------------------------- drivers/input/misc/gpio_matrix.c | 406 ------------------------------- drivers/input/misc/gpio_output.c | 84 ------- include/linux/gpio_event.h | 154 ------------ 8 files changed, 1397 deletions(-) delete mode 100644 drivers/input/misc/gpio_axis.c delete mode 100644 drivers/input/misc/gpio_event.c delete mode 100644 drivers/input/misc/gpio_input.c delete mode 100644 drivers/input/misc/gpio_matrix.c delete mode 100644 drivers/input/misc/gpio_output.c delete mode 100644 include/linux/gpio_event.h diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 40db4ef81177..f4462669cf91 100755 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -256,11 +256,6 @@ config INPUT_WINBOND_CIR 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 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index c2cd9550a667..a5de431562fc 100755 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -14,7 +14,6 @@ obj-$(CONFIG_INPUT_BFIN_ROTARY) += bfin_rotary.o obj-$(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 diff --git a/drivers/input/misc/gpio_axis.c b/drivers/input/misc/gpio_axis.c deleted file mode 100644 index c801172aa9ee..000000000000 --- a/drivers/input/misc/gpio_axis.c +++ /dev/null @@ -1,180 +0,0 @@ -/* 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 -#include -#include -#include - -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; -} diff --git a/drivers/input/misc/gpio_event.c b/drivers/input/misc/gpio_event.c deleted file mode 100644 index 8b64c1e579ba..000000000000 --- a/drivers/input/misc/gpio_event.c +++ /dev/null @@ -1,224 +0,0 @@ -/* 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 -#include -#include -#include -#include -#include - -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"); - diff --git a/drivers/input/misc/gpio_input.c b/drivers/input/misc/gpio_input.c deleted file mode 100644 index 7e307f267a2a..000000000000 --- a/drivers/input/misc/gpio_input.c +++ /dev/null @@ -1,343 +0,0 @@ -/* 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 -#include -#include -#include -#include -#include -#include - -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; -} diff --git a/drivers/input/misc/gpio_matrix.c b/drivers/input/misc/gpio_matrix.c deleted file mode 100644 index c1f47651a493..000000000000 --- a/drivers/input/misc/gpio_matrix.c +++ /dev/null @@ -1,406 +0,0 @@ -/* 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 -#include -#include -#include -#include -#include - -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; -} diff --git a/drivers/input/misc/gpio_output.c b/drivers/input/misc/gpio_output.c deleted file mode 100644 index 6f8453c97bd2..000000000000 --- a/drivers/input/misc/gpio_output.c +++ /dev/null @@ -1,84 +0,0 @@ -/* 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 -#include -#include - -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; -} - diff --git a/include/linux/gpio_event.h b/include/linux/gpio_event.h deleted file mode 100644 index 5ff828bcb6bc..000000000000 --- a/include/linux/gpio_event.h +++ /dev/null @@ -1,154 +0,0 @@ -/* 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 - -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 -- 2.34.1