| /* dvb-usb-remote.c is part of the DVB USB library. |
| * |
| * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de) |
| * see dvb-usb-init.c for copyright information. |
| * |
| * This file contains functions for initializing the input-device and for handling remote-control-queries. |
| */ |
| #include "dvb-usb-common.h" |
| #include <linux/usb/input.h> |
| |
| static unsigned int |
| legacy_dvb_usb_get_keymap_index(const struct input_keymap_entry *ke, |
| struct rc_map_table *keymap, |
| unsigned int keymap_size) |
| { |
| unsigned int index; |
| unsigned int scancode; |
| |
| if (ke->flags & INPUT_KEYMAP_BY_INDEX) { |
| index = ke->index; |
| } else { |
| if (input_scancode_to_scalar(ke, &scancode)) |
| return keymap_size; |
| |
| /* See if we can match the raw key code. */ |
| for (index = 0; index < keymap_size; index++) |
| if (keymap[index].scancode == scancode) |
| break; |
| |
| /* See if there is an unused hole in the map */ |
| if (index >= keymap_size) { |
| for (index = 0; index < keymap_size; index++) { |
| if (keymap[index].keycode == KEY_RESERVED || |
| keymap[index].keycode == KEY_UNKNOWN) { |
| break; |
| } |
| } |
| } |
| } |
| |
| return index; |
| } |
| |
| static int legacy_dvb_usb_getkeycode(struct input_dev *dev, |
| struct input_keymap_entry *ke) |
| { |
| struct dvb_usb_device *d = input_get_drvdata(dev); |
| struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
| unsigned int keymap_size = d->props.rc.legacy.rc_map_size; |
| unsigned int index; |
| |
| index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); |
| if (index >= keymap_size) |
| return -EINVAL; |
| |
| ke->keycode = keymap[index].keycode; |
| if (ke->keycode == KEY_UNKNOWN) |
| ke->keycode = KEY_RESERVED; |
| ke->len = sizeof(keymap[index].scancode); |
| memcpy(&ke->scancode, &keymap[index].scancode, ke->len); |
| ke->index = index; |
| |
| return 0; |
| } |
| |
| static int legacy_dvb_usb_setkeycode(struct input_dev *dev, |
| const struct input_keymap_entry *ke, |
| unsigned int *old_keycode) |
| { |
| struct dvb_usb_device *d = input_get_drvdata(dev); |
| struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
| unsigned int keymap_size = d->props.rc.legacy.rc_map_size; |
| unsigned int index; |
| |
| index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); |
| /* |
| * FIXME: Currently, it is not possible to increase the size of |
| * scancode table. For it to happen, one possibility |
| * would be to allocate a table with key_map_size + 1, |
| * copying data, appending the new key on it, and freeing |
| * the old one - or maybe just allocating some spare space |
| */ |
| if (index >= keymap_size) |
| return -EINVAL; |
| |
| *old_keycode = keymap[index].keycode; |
| keymap->keycode = ke->keycode; |
| __set_bit(ke->keycode, dev->keybit); |
| |
| if (*old_keycode != KEY_RESERVED) { |
| __clear_bit(*old_keycode, dev->keybit); |
| for (index = 0; index < keymap_size; index++) { |
| if (keymap[index].keycode == *old_keycode) { |
| __set_bit(*old_keycode, dev->keybit); |
| break; |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* Remote-control poll function - called every dib->rc_query_interval ms to see |
| * whether the remote control has received anything. |
| * |
| * TODO: Fix the repeat rate of the input device. |
| */ |
| static void legacy_dvb_usb_read_remote_control(struct work_struct *work) |
| { |
| struct dvb_usb_device *d = |
| container_of(work, struct dvb_usb_device, rc_query_work.work); |
| u32 event; |
| int state; |
| |
| /* TODO: need a lock here. We can simply skip checking for the remote control |
| if we're busy. */ |
| |
| /* when the parameter has been set to 1 via sysfs while the driver was running */ |
| if (dvb_usb_disable_rc_polling) |
| return; |
| |
| if (d->props.rc.legacy.rc_query(d,&event,&state)) { |
| err("error while querying for an remote control event."); |
| goto schedule; |
| } |
| |
| |
| switch (state) { |
| case REMOTE_NO_KEY_PRESSED: |
| break; |
| case REMOTE_KEY_PRESSED: |
| deb_rc("key pressed\n"); |
| d->last_event = event; |
| case REMOTE_KEY_REPEAT: |
| deb_rc("key repeated\n"); |
| input_event(d->input_dev, EV_KEY, event, 1); |
| input_sync(d->input_dev); |
| input_event(d->input_dev, EV_KEY, d->last_event, 0); |
| input_sync(d->input_dev); |
| break; |
| default: |
| break; |
| } |
| |
| /* improved repeat handling ??? |
| switch (state) { |
| case REMOTE_NO_KEY_PRESSED: |
| deb_rc("NO KEY PRESSED\n"); |
| if (d->last_state != REMOTE_NO_KEY_PRESSED) { |
| deb_rc("releasing event %d\n",d->last_event); |
| input_event(d->rc_input_dev, EV_KEY, d->last_event, 0); |
| input_sync(d->rc_input_dev); |
| } |
| d->last_state = REMOTE_NO_KEY_PRESSED; |
| d->last_event = 0; |
| break; |
| case REMOTE_KEY_PRESSED: |
| deb_rc("KEY PRESSED\n"); |
| deb_rc("pressing event %d\n",event); |
| |
| input_event(d->rc_input_dev, EV_KEY, event, 1); |
| input_sync(d->rc_input_dev); |
| |
| d->last_event = event; |
| d->last_state = REMOTE_KEY_PRESSED; |
| break; |
| case REMOTE_KEY_REPEAT: |
| deb_rc("KEY_REPEAT\n"); |
| if (d->last_state != REMOTE_NO_KEY_PRESSED) { |
| deb_rc("repeating event %d\n",d->last_event); |
| input_event(d->rc_input_dev, EV_KEY, d->last_event, 2); |
| input_sync(d->rc_input_dev); |
| d->last_state = REMOTE_KEY_REPEAT; |
| } |
| default: |
| break; |
| } |
| */ |
| |
| schedule: |
| schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc.legacy.rc_interval)); |
| } |
| |
| static int legacy_dvb_usb_remote_init(struct dvb_usb_device *d) |
| { |
| int i, err, rc_interval; |
| struct input_dev *input_dev; |
| |
| input_dev = input_allocate_device(); |
| if (!input_dev) |
| return -ENOMEM; |
| |
| input_dev->evbit[0] = BIT_MASK(EV_KEY); |
| input_dev->name = "IR-receiver inside an USB DVB receiver"; |
| input_dev->phys = d->rc_phys; |
| usb_to_input_id(d->udev, &input_dev->id); |
| input_dev->dev.parent = &d->udev->dev; |
| d->input_dev = input_dev; |
| d->rc_dev = NULL; |
| |
| input_dev->getkeycode = legacy_dvb_usb_getkeycode; |
| input_dev->setkeycode = legacy_dvb_usb_setkeycode; |
| |
| /* set the bits for the keys */ |
| deb_rc("key map size: %d\n", d->props.rc.legacy.rc_map_size); |
| for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { |
| deb_rc("setting bit for event %d item %d\n", |
| d->props.rc.legacy.rc_map_table[i].keycode, i); |
| set_bit(d->props.rc.legacy.rc_map_table[i].keycode, input_dev->keybit); |
| } |
| |
| /* setting these two values to non-zero, we have to manage key repeats */ |
| input_dev->rep[REP_PERIOD] = d->props.rc.legacy.rc_interval; |
| input_dev->rep[REP_DELAY] = d->props.rc.legacy.rc_interval + 150; |
| |
| input_set_drvdata(input_dev, d); |
| |
| err = input_register_device(input_dev); |
| if (err) |
| input_free_device(input_dev); |
| |
| rc_interval = d->props.rc.legacy.rc_interval; |
| |
| INIT_DELAYED_WORK(&d->rc_query_work, legacy_dvb_usb_read_remote_control); |
| |
| info("schedule remote query interval to %d msecs.", rc_interval); |
| schedule_delayed_work(&d->rc_query_work, |
| msecs_to_jiffies(rc_interval)); |
| |
| d->state |= DVB_USB_STATE_REMOTE; |
| |
| return err; |
| } |
| |
| /* Remote-control poll function - called every dib->rc_query_interval ms to see |
| * whether the remote control has received anything. |
| * |
| * TODO: Fix the repeat rate of the input device. |
| */ |
| static void dvb_usb_read_remote_control(struct work_struct *work) |
| { |
| struct dvb_usb_device *d = |
| container_of(work, struct dvb_usb_device, rc_query_work.work); |
| int err; |
| |
| /* TODO: need a lock here. We can simply skip checking for the remote control |
| if we're busy. */ |
| |
| /* when the parameter has been set to 1 via sysfs while the |
| * driver was running, or when bulk mode is enabled after IR init |
| */ |
| if (dvb_usb_disable_rc_polling || d->props.rc.core.bulk_mode) |
| return; |
| |
| err = d->props.rc.core.rc_query(d); |
| if (err) |
| err("error %d while querying for an remote control event.", err); |
| |
| schedule_delayed_work(&d->rc_query_work, |
| msecs_to_jiffies(d->props.rc.core.rc_interval)); |
| } |
| |
| static int rc_core_dvb_usb_remote_init(struct dvb_usb_device *d) |
| { |
| int err, rc_interval; |
| struct rc_dev *dev; |
| |
| dev = rc_allocate_device(d->props.rc.core.driver_type); |
| if (!dev) |
| return -ENOMEM; |
| |
| dev->driver_name = d->props.rc.core.module_name; |
| dev->map_name = d->props.rc.core.rc_codes; |
| dev->change_protocol = d->props.rc.core.change_protocol; |
| dev->allowed_protocols = d->props.rc.core.allowed_protos; |
| usb_to_input_id(d->udev, &dev->input_id); |
| dev->input_name = "IR-receiver inside an USB DVB receiver"; |
| dev->input_phys = d->rc_phys; |
| dev->dev.parent = &d->udev->dev; |
| dev->priv = d; |
| |
| err = rc_register_device(dev); |
| if (err < 0) { |
| rc_free_device(dev); |
| return err; |
| } |
| |
| d->input_dev = NULL; |
| d->rc_dev = dev; |
| |
| if (!d->props.rc.core.rc_query || d->props.rc.core.bulk_mode) |
| return 0; |
| |
| /* Polling mode - initialize a work queue for handling it */ |
| INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control); |
| |
| rc_interval = d->props.rc.core.rc_interval; |
| |
| info("schedule remote query interval to %d msecs.", rc_interval); |
| schedule_delayed_work(&d->rc_query_work, |
| msecs_to_jiffies(rc_interval)); |
| |
| return 0; |
| } |
| |
| int dvb_usb_remote_init(struct dvb_usb_device *d) |
| { |
| int err; |
| |
| if (dvb_usb_disable_rc_polling) |
| return 0; |
| |
| if (d->props.rc.legacy.rc_map_table && d->props.rc.legacy.rc_query) |
| d->props.rc.mode = DVB_RC_LEGACY; |
| else if (d->props.rc.core.rc_codes) |
| d->props.rc.mode = DVB_RC_CORE; |
| else |
| return 0; |
| |
| usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys)); |
| strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys)); |
| |
| /* Start the remote-control polling. */ |
| if (d->props.rc.legacy.rc_interval < 40) |
| d->props.rc.legacy.rc_interval = 100; /* default */ |
| |
| if (d->props.rc.mode == DVB_RC_LEGACY) |
| err = legacy_dvb_usb_remote_init(d); |
| else |
| err = rc_core_dvb_usb_remote_init(d); |
| if (err) |
| return err; |
| |
| d->state |= DVB_USB_STATE_REMOTE; |
| |
| return 0; |
| } |
| |
| int dvb_usb_remote_exit(struct dvb_usb_device *d) |
| { |
| if (d->state & DVB_USB_STATE_REMOTE) { |
| cancel_delayed_work_sync(&d->rc_query_work); |
| if (d->props.rc.mode == DVB_RC_LEGACY) |
| input_unregister_device(d->input_dev); |
| else |
| rc_unregister_device(d->rc_dev); |
| } |
| d->state &= ~DVB_USB_STATE_REMOTE; |
| return 0; |
| } |
| |
| #define DVB_USB_RC_NEC_EMPTY 0x00 |
| #define DVB_USB_RC_NEC_KEY_PRESSED 0x01 |
| #define DVB_USB_RC_NEC_KEY_REPEATED 0x02 |
| int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d, |
| u8 keybuf[5], u32 *event, int *state) |
| { |
| int i; |
| struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
| *event = 0; |
| *state = REMOTE_NO_KEY_PRESSED; |
| switch (keybuf[0]) { |
| case DVB_USB_RC_NEC_EMPTY: |
| break; |
| case DVB_USB_RC_NEC_KEY_PRESSED: |
| if ((u8) ~keybuf[1] != keybuf[2] || |
| (u8) ~keybuf[3] != keybuf[4]) { |
| deb_err("remote control checksum failed.\n"); |
| break; |
| } |
| /* See if we can match the raw key code. */ |
| for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) |
| if (rc5_custom(&keymap[i]) == keybuf[1] && |
| rc5_data(&keymap[i]) == keybuf[3]) { |
| *event = keymap[i].keycode; |
| *state = REMOTE_KEY_PRESSED; |
| return 0; |
| } |
| deb_err("key mapping failed - no appropriate key found in keymapping\n"); |
| break; |
| case DVB_USB_RC_NEC_KEY_REPEATED: |
| *state = REMOTE_KEY_REPEAT; |
| break; |
| default: |
| deb_err("unknown type of remote status: %d\n",keybuf[0]); |
| break; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event); |