diff options
Diffstat (limited to 'drivers/media/dvb/dibusb/dvb-dibusb-remote.c')
| -rw-r--r-- | drivers/media/dvb/dibusb/dvb-dibusb-remote.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/drivers/media/dvb/dibusb/dvb-dibusb-remote.c b/drivers/media/dvb/dibusb/dvb-dibusb-remote.c new file mode 100644 index 000000000000..9dc8b15517b7 --- /dev/null +++ b/drivers/media/dvb/dibusb/dvb-dibusb-remote.c @@ -0,0 +1,316 @@ +/* + * dvb-dibusb-remote.c is part of the driver for mobile USB Budget DVB-T devices + * based on reference design made by DiBcom (http://www.dibcom.fr/) + * + * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de) + * + * see dvb-dibusb-core.c for more copyright details. + * + * This file contains functions for handling the event device on the software + * side and the remote control on the hardware side. + */ +#include "dvb-dibusb.h" + +/* Table to map raw key codes to key events. This should not be hard-wired + into the kernel. */ +static const struct { u8 c0, c1, c2; uint32_t key; } nec_rc_keys [] = +{ + /* Key codes for the little Artec T1/Twinhan/HAMA/ remote. */ + { 0x00, 0xff, 0x16, KEY_POWER }, + { 0x00, 0xff, 0x10, KEY_MUTE }, + { 0x00, 0xff, 0x03, KEY_1 }, + { 0x00, 0xff, 0x01, KEY_2 }, + { 0x00, 0xff, 0x06, KEY_3 }, + { 0x00, 0xff, 0x09, KEY_4 }, + { 0x00, 0xff, 0x1d, KEY_5 }, + { 0x00, 0xff, 0x1f, KEY_6 }, + { 0x00, 0xff, 0x0d, KEY_7 }, + { 0x00, 0xff, 0x19, KEY_8 }, + { 0x00, 0xff, 0x1b, KEY_9 }, + { 0x00, 0xff, 0x15, KEY_0 }, + { 0x00, 0xff, 0x05, KEY_CHANNELUP }, + { 0x00, 0xff, 0x02, KEY_CHANNELDOWN }, + { 0x00, 0xff, 0x1e, KEY_VOLUMEUP }, + { 0x00, 0xff, 0x0a, KEY_VOLUMEDOWN }, + { 0x00, 0xff, 0x11, KEY_RECORD }, + { 0x00, 0xff, 0x17, KEY_FAVORITES }, /* Heart symbol - Channel list. */ + { 0x00, 0xff, 0x14, KEY_PLAY }, + { 0x00, 0xff, 0x1a, KEY_STOP }, + { 0x00, 0xff, 0x40, KEY_REWIND }, + { 0x00, 0xff, 0x12, KEY_FASTFORWARD }, + { 0x00, 0xff, 0x0e, KEY_PREVIOUS }, /* Recall - Previous channel. */ + { 0x00, 0xff, 0x4c, KEY_PAUSE }, + { 0x00, 0xff, 0x4d, KEY_SCREEN }, /* Full screen mode. */ + { 0x00, 0xff, 0x54, KEY_AUDIO }, /* MTS - Switch to secondary audio. */ + /* additional keys TwinHan VisionPlus, the Artec seemingly not have */ + { 0x00, 0xff, 0x0c, KEY_CANCEL }, /* Cancel */ + { 0x00, 0xff, 0x1c, KEY_EPG }, /* EPG */ + { 0x00, 0xff, 0x00, KEY_TAB }, /* Tab */ + { 0x00, 0xff, 0x48, KEY_INFO }, /* Preview */ + { 0x00, 0xff, 0x04, KEY_LIST }, /* RecordList */ + { 0x00, 0xff, 0x0f, KEY_TEXT }, /* Teletext */ + /* Key codes for the KWorld/ADSTech/JetWay remote. */ + { 0x86, 0x6b, 0x12, KEY_POWER }, + { 0x86, 0x6b, 0x0f, KEY_SELECT }, /* source */ + { 0x86, 0x6b, 0x0c, KEY_UNKNOWN }, /* scan */ + { 0x86, 0x6b, 0x0b, KEY_EPG }, + { 0x86, 0x6b, 0x10, KEY_MUTE }, + { 0x86, 0x6b, 0x01, KEY_1 }, + { 0x86, 0x6b, 0x02, KEY_2 }, + { 0x86, 0x6b, 0x03, KEY_3 }, + { 0x86, 0x6b, 0x04, KEY_4 }, + { 0x86, 0x6b, 0x05, KEY_5 }, + { 0x86, 0x6b, 0x06, KEY_6 }, + { 0x86, 0x6b, 0x07, KEY_7 }, + { 0x86, 0x6b, 0x08, KEY_8 }, + { 0x86, 0x6b, 0x09, KEY_9 }, + { 0x86, 0x6b, 0x0a, KEY_0 }, + { 0x86, 0x6b, 0x18, KEY_ZOOM }, + { 0x86, 0x6b, 0x1c, KEY_UNKNOWN }, /* preview */ + { 0x86, 0x6b, 0x13, KEY_UNKNOWN }, /* snap */ + { 0x86, 0x6b, 0x00, KEY_UNDO }, + { 0x86, 0x6b, 0x1d, KEY_RECORD }, + { 0x86, 0x6b, 0x0d, KEY_STOP }, + { 0x86, 0x6b, 0x0e, KEY_PAUSE }, + { 0x86, 0x6b, 0x16, KEY_PLAY }, + { 0x86, 0x6b, 0x11, KEY_BACK }, + { 0x86, 0x6b, 0x19, KEY_FORWARD }, + { 0x86, 0x6b, 0x14, KEY_UNKNOWN }, /* pip */ + { 0x86, 0x6b, 0x15, KEY_ESC }, + { 0x86, 0x6b, 0x1a, KEY_UP }, + { 0x86, 0x6b, 0x1e, KEY_DOWN }, + { 0x86, 0x6b, 0x1f, KEY_LEFT }, + { 0x86, 0x6b, 0x1b, KEY_RIGHT }, +}; + +/* Hauppauge NOVA-T USB2 keys */ +static const struct { u16 raw; uint32_t key; } haupp_rc_keys [] = { + { 0xddf, KEY_GOTO }, + { 0xdef, KEY_POWER }, + { 0xce7, KEY_TV }, + { 0xcc7, KEY_VIDEO }, + { 0xccf, KEY_AUDIO }, + { 0xcd7, KEY_MEDIA }, + { 0xcdf, KEY_EPG }, + { 0xca7, KEY_UP }, + { 0xc67, KEY_RADIO }, + { 0xcb7, KEY_LEFT }, + { 0xd2f, KEY_OK }, + { 0xcbf, KEY_RIGHT }, + { 0xcff, KEY_BACK }, + { 0xcaf, KEY_DOWN }, + { 0xc6f, KEY_MENU }, + { 0xc87, KEY_VOLUMEUP }, + { 0xc8f, KEY_VOLUMEDOWN }, + { 0xc97, KEY_CHANNEL }, + { 0xc7f, KEY_MUTE }, + { 0xd07, KEY_CHANNELUP }, + { 0xd0f, KEY_CHANNELDOWN }, + { 0xdbf, KEY_RECORD }, + { 0xdb7, KEY_STOP }, + { 0xd97, KEY_REWIND }, + { 0xdaf, KEY_PLAY }, + { 0xda7, KEY_FASTFORWARD }, + { 0xd27, KEY_LAST }, /* Skip backwards */ + { 0xd87, KEY_PAUSE }, + { 0xcf7, KEY_NEXT }, + { 0xc07, KEY_0 }, + { 0xc0f, KEY_1 }, + { 0xc17, KEY_2 }, + { 0xc1f, KEY_3 }, + { 0xc27, KEY_4 }, + { 0xc2f, KEY_5 }, + { 0xc37, KEY_6 }, + { 0xc3f, KEY_7 }, + { 0xc47, KEY_8 }, + { 0xc4f, KEY_9 }, + { 0xc57, KEY_KPASTERISK }, + { 0xc77, KEY_GRAVE }, /* # */ + { 0xc5f, KEY_RED }, + { 0xd77, KEY_GREEN }, + { 0xdc7, KEY_YELLOW }, + { 0xd4f, KEY_BLUE}, +}; + +static int dibusb_key2event_nec(struct usb_dibusb *dib,u8 rb[5]) +{ + int i; + switch (rb[0]) { + case DIBUSB_RC_NEC_KEY_PRESSED: + /* rb[1-3] is the actual key, rb[4] is a checksum */ + deb_rc("raw key code 0x%02x, 0x%02x, 0x%02x, 0x%02x\n", + rb[1], rb[2], rb[3], rb[4]); + + if ((0xff - rb[3]) != rb[4]) { + deb_rc("remote control checksum failed.\n"); + break; + } + + /* See if we can match the raw key code. */ + for (i = 0; i < sizeof(nec_rc_keys)/sizeof(nec_rc_keys[0]); i++) { + if (nec_rc_keys[i].c0 == rb[1] && + nec_rc_keys[i].c1 == rb[2] && + nec_rc_keys[i].c2 == rb[3]) { + + dib->last_event = nec_rc_keys[i].key; + return 1; + } + } + break; + case DIBUSB_RC_NEC_KEY_REPEATED: + /* rb[1]..rb[4] are always zero.*/ + /* Repeats often seem to occur so for the moment just ignore this. */ + return 0; + case DIBUSB_RC_NEC_EMPTY: /* No (more) remote control keys. */ + default: + break; + } + return -1; +} + +static int dibusb_key2event_hauppauge(struct usb_dibusb *dib,u8 rb[4]) +{ + u16 raw; + int i,state; + switch (rb[0]) { + case DIBUSB_RC_HAUPPAUGE_KEY_PRESSED: + raw = ((rb[1] & 0x0f) << 8) | rb[2]; + + state = !!(rb[1] & 0x40); + + deb_rc("raw key code 0x%02x, 0x%02x, 0x%02x to %04x state: %d\n",rb[1],rb[2],rb[3],raw,state); + for (i = 0; i < sizeof(haupp_rc_keys)/sizeof(haupp_rc_keys[0]); i++) { + if (haupp_rc_keys[i].raw == raw) { + if (dib->last_event == haupp_rc_keys[i].key && + dib->last_state == state) { + deb_rc("key repeat\n"); + return 0; + } else { + dib->last_event = haupp_rc_keys[i].key; + dib->last_state = state; + return 1; + } + } + } + + break; + case DIBUSB_RC_HAUPPAUGE_KEY_EMPTY: + default: + break; + } + return -1; +} + +/* + * Read the remote control and feed the appropriate event. + * NEC protocol is used for remote controls + */ +static int dibusb_read_remote_control(struct usb_dibusb *dib) +{ + u8 b[1] = { DIBUSB_REQ_POLL_REMOTE }, rb[5]; + int ret,event = 0; + + if ((ret = dibusb_readwrite_usb(dib,b,1,rb,5))) + return ret; + + switch (dib->dibdev->dev_cl->remote_type) { + case DIBUSB_RC_NEC_PROTOCOL: + event = dibusb_key2event_nec(dib,rb); + break; + case DIBUSB_RC_HAUPPAUGE_PROTO: + event = dibusb_key2event_hauppauge(dib,rb); + default: + break; + } + + /* key repeat */ + if (event == 0) + if (++dib->repeat_key_count < dib->rc_key_repeat_count) { + deb_rc("key repeat dropped. (%d)\n",dib->repeat_key_count); + event = -1; /* skip this key repeat */ + } + + if (event == 1 || event == 0) { + deb_rc("Translated key 0x%04x\n",event); + + /* Signal down and up events for this key. */ + input_report_key(&dib->rc_input_dev, dib->last_event, 1); + input_report_key(&dib->rc_input_dev, dib->last_event, 0); + input_sync(&dib->rc_input_dev); + + if (event == 1) + dib->repeat_key_count = 0; + } + return 0; +} + +/* Remote-control poll function - called every dib->rc_query_interval ms to see + whether the remote control has received anything. */ +static void dibusb_remote_query(void *data) +{ + struct usb_dibusb *dib = (struct usb_dibusb *) data; + /* TODO: need a lock here. We can simply skip checking for the remote control + if we're busy. */ + dibusb_read_remote_control(dib); + schedule_delayed_work(&dib->rc_query_work, + msecs_to_jiffies(dib->rc_query_interval)); +} + +int dibusb_remote_init(struct usb_dibusb *dib) +{ + int i; + + if (dib->dibdev->dev_cl->remote_type == DIBUSB_RC_NO) + return 0; + + /* Initialise the remote-control structures.*/ + init_input_dev(&dib->rc_input_dev); + + dib->rc_input_dev.evbit[0] = BIT(EV_KEY); + dib->rc_input_dev.keycodesize = sizeof(unsigned char); + dib->rc_input_dev.keycodemax = KEY_MAX; + dib->rc_input_dev.name = DRIVER_DESC " remote control"; + + switch (dib->dibdev->dev_cl->remote_type) { + case DIBUSB_RC_NEC_PROTOCOL: + for (i=0; i<sizeof(nec_rc_keys)/sizeof(nec_rc_keys[0]); i++) + set_bit(nec_rc_keys[i].key, dib->rc_input_dev.keybit); + break; + case DIBUSB_RC_HAUPPAUGE_PROTO: + for (i=0; i<sizeof(haupp_rc_keys)/sizeof(haupp_rc_keys[0]); i++) + set_bit(haupp_rc_keys[i].key, dib->rc_input_dev.keybit); + break; + default: + break; + } + + + input_register_device(&dib->rc_input_dev); + + INIT_WORK(&dib->rc_query_work, dibusb_remote_query, dib); + + /* Start the remote-control polling. */ + if (dib->rc_query_interval < 40) + dib->rc_query_interval = 100; /* default */ + + info("schedule remote query interval to %d msecs.",dib->rc_query_interval); + schedule_delayed_work(&dib->rc_query_work,msecs_to_jiffies(dib->rc_query_interval)); + + dib->init_state |= DIBUSB_STATE_REMOTE; + + return 0; +} + +int dibusb_remote_exit(struct usb_dibusb *dib) +{ + if (dib->dibdev->dev_cl->remote_type == DIBUSB_RC_NO) + return 0; + + if (dib->init_state & DIBUSB_STATE_REMOTE) { + cancel_delayed_work(&dib->rc_query_work); + flush_scheduled_work(); + input_unregister_device(&dib->rc_input_dev); + } + dib->init_state &= ~DIBUSB_STATE_REMOTE; + return 0; +} |