diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb/af9005-remote.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb/af9005-remote.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/af9005-remote.c b/drivers/media/usb/dvb-usb/af9005-remote.c new file mode 100644 index 000000000..41d48b3c8 --- /dev/null +++ b/drivers/media/usb/dvb-usb/af9005-remote.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* DVB USB compliant Linux driver for the Afatech 9005 + * USB1.1 DVB-T receiver. + * + * Standard remote decode function + * + * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org) + * + * Thanks to Afatech who kindly provided information. + * + * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information + */ +#include "af9005.h" +/* debug */ +static int dvb_usb_af9005_remote_debug; +module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644); +MODULE_PARM_DESC(debug, + "enable (1) or disable (0) debug messages." + DVB_USB_DEBUG_STATUS); + +#define deb_decode(args...) dprintk(dvb_usb_af9005_remote_debug,0x01,args) + +struct rc_map_table rc_map_af9005_table[] = { + + {0x01b7, KEY_POWER}, + {0x01a7, KEY_VOLUMEUP}, + {0x0187, KEY_CHANNELUP}, + {0x017f, KEY_MUTE}, + {0x01bf, KEY_VOLUMEDOWN}, + {0x013f, KEY_CHANNELDOWN}, + {0x01df, KEY_1}, + {0x015f, KEY_2}, + {0x019f, KEY_3}, + {0x011f, KEY_4}, + {0x01ef, KEY_5}, + {0x016f, KEY_6}, + {0x01af, KEY_7}, + {0x0127, KEY_8}, + {0x0107, KEY_9}, + {0x01cf, KEY_ZOOM}, + {0x014f, KEY_0}, + {0x018f, KEY_GOTO}, /* marked jump on the remote */ + + {0x00bd, KEY_POWER}, + {0x007d, KEY_VOLUMEUP}, + {0x00fd, KEY_CHANNELUP}, + {0x009d, KEY_MUTE}, + {0x005d, KEY_VOLUMEDOWN}, + {0x00dd, KEY_CHANNELDOWN}, + {0x00ad, KEY_1}, + {0x006d, KEY_2}, + {0x00ed, KEY_3}, + {0x008d, KEY_4}, + {0x004d, KEY_5}, + {0x00cd, KEY_6}, + {0x00b5, KEY_7}, + {0x0075, KEY_8}, + {0x00f5, KEY_9}, + {0x0095, KEY_ZOOM}, + {0x0055, KEY_0}, + {0x00d5, KEY_GOTO}, /* marked jump on the remote */ +}; + +int rc_map_af9005_table_size = ARRAY_SIZE(rc_map_af9005_table); + +static int repeatable_keys[] = { + KEY_VOLUMEUP, + KEY_VOLUMEDOWN, + KEY_CHANNELUP, + KEY_CHANNELDOWN +}; + +int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event, + int *state) +{ + u16 mark, space; + u32 result; + u8 cust, dat, invdat; + int i; + + if (len >= 6) { + mark = (u16) (data[0] << 8) + data[1]; + space = (u16) (data[2] << 8) + data[3]; + if (space * 3 < mark) { + for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) { + if (d->last_event == repeatable_keys[i]) { + *state = REMOTE_KEY_REPEAT; + *event = d->last_event; + deb_decode("repeat key, event %x\n", + *event); + return 0; + } + } + deb_decode("repeated key ignored (non repeatable)\n"); + return 0; + } else if (len >= 33 * 4) { /*32 bits + start code */ + result = 0; + for (i = 4; i < 4 + 32 * 4; i += 4) { + result <<= 1; + mark = (u16) (data[i] << 8) + data[i + 1]; + mark >>= 1; + space = (u16) (data[i + 2] << 8) + data[i + 3]; + space >>= 1; + if (mark * 2 > space) + result += 1; + } + deb_decode("key pressed, raw value %x\n", result); + if ((result & 0xff000000) != 0xfe000000) { + deb_decode + ("doesn't start with 0xfe, ignored\n"); + return 0; + } + cust = (result >> 16) & 0xff; + dat = (result >> 8) & 0xff; + invdat = (~result) & 0xff; + if (dat != invdat) { + deb_decode("code != inverted code\n"); + return 0; + } + for (i = 0; i < rc_map_af9005_table_size; i++) { + if (rc5_custom(&rc_map_af9005_table[i]) == cust + && rc5_data(&rc_map_af9005_table[i]) == dat) { + *event = rc_map_af9005_table[i].keycode; + *state = REMOTE_KEY_PRESSED; + deb_decode + ("key pressed, event %x\n", *event); + return 0; + } + } + deb_decode("not found in table\n"); + } + } + return 0; +} + +EXPORT_SYMBOL(rc_map_af9005_table); +EXPORT_SYMBOL(rc_map_af9005_table_size); +EXPORT_SYMBOL(af9005_rc_decode); + +MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>"); +MODULE_DESCRIPTION + ("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick"); +MODULE_VERSION("1.0"); +MODULE_LICENSE("GPL"); |