diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb/digitv.c')
-rw-r--r-- | drivers/media/usb/dvb-usb/digitv.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/digitv.c b/drivers/media/usb/dvb-usb/digitv.c new file mode 100644 index 000000000..32134be16 --- /dev/null +++ b/drivers/media/usb/dvb-usb/digitv.c @@ -0,0 +1,374 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0 + * receiver + * + * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de) + * + * partly based on the SDK published by Nebula Electronics + * + * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information + */ +#include "digitv.h" + +#include "mt352.h" +#include "nxt6000.h" + +/* debug */ +static int dvb_usb_digitv_debug; +module_param_named(debug,dvb_usb_digitv_debug, int, 0644); +MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS); + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +#define deb_rc(args...) dprintk(dvb_usb_digitv_debug,0x01,args) + +static int digitv_ctrl_msg(struct dvb_usb_device *d, + u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen) +{ + struct digitv_state *st = d->priv; + int ret, wo; + + wo = (rbuf == NULL || rlen == 0); /* write-only */ + + if (wlen > 4 || rlen > 4) + return -EIO; + + memset(st->sndbuf, 0, 7); + memset(st->rcvbuf, 0, 7); + + st->sndbuf[0] = cmd; + st->sndbuf[1] = vv; + st->sndbuf[2] = wo ? wlen : rlen; + + if (wo) { + memcpy(&st->sndbuf[3], wbuf, wlen); + ret = dvb_usb_generic_write(d, st->sndbuf, 7); + } else { + ret = dvb_usb_generic_rw(d, st->sndbuf, 7, st->rcvbuf, 7, 10); + memcpy(rbuf, &st->rcvbuf[3], rlen); + } + return ret; +} + +/* I2C */ +static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num) +{ + struct dvb_usb_device *d = i2c_get_adapdata(adap); + int i; + + if (mutex_lock_interruptible(&d->i2c_mutex) < 0) + return -EAGAIN; + + if (num > 2) + warn("more than 2 i2c messages at a time is not handled yet. TODO."); + + for (i = 0; i < num; i++) { + if (msg[i].len < 1) { + i = -EOPNOTSUPP; + break; + } + /* write/read request */ + if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { + if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0, + msg[i+1].buf,msg[i+1].len) < 0) + break; + i++; + } else + if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0], + &msg[i].buf[1],msg[i].len-1,NULL,0) < 0) + break; + } + + mutex_unlock(&d->i2c_mutex); + return i; +} + +static u32 digitv_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C; +} + +static struct i2c_algorithm digitv_i2c_algo = { + .master_xfer = digitv_i2c_xfer, + .functionality = digitv_i2c_func, +}; + +/* Callbacks for DVB USB */ +static int digitv_identify_state(struct usb_device *udev, + const struct dvb_usb_device_properties *props, + const struct dvb_usb_device_description **desc, + int *cold) +{ + *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0; + return 0; +} + +static int digitv_mt352_demod_init(struct dvb_frontend *fe) +{ + static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 }; + static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50, + 0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00, + 0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f, + 0x75, 0x32 }; + int i; + + for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2) + mt352_write(fe, &reset_buf[i], 2); + + msleep(1); + + for (i = 0; i < ARRAY_SIZE(init_buf); i += 2) + mt352_write(fe, &init_buf[i], 2); + + return 0; +} + +static struct mt352_config digitv_mt352_config = { + .demod_init = digitv_mt352_demod_init, +}; + +static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe) +{ + struct dvb_usb_adapter *adap = fe->dvb->priv; + u8 b[5]; + + fe->ops.tuner_ops.calc_regs(fe, b, sizeof(b)); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 1); + return digitv_ctrl_msg(adap->dev, USB_WRITE_TUNER, 0, &b[1], 4, NULL, 0); +} + +static struct nxt6000_config digitv_nxt6000_config = { + .clock_inversion = 1, +}; + +static int digitv_frontend_attach(struct dvb_usb_adapter *adap) +{ + struct digitv_state *st = adap->dev->priv; + + adap->fe_adap[0].fe = dvb_attach(mt352_attach, &digitv_mt352_config, + &adap->dev->i2c_adap); + if ((adap->fe_adap[0].fe) != NULL) { + st->is_nxt6000 = 0; + return 0; + } + adap->fe_adap[0].fe = dvb_attach(nxt6000_attach, + &digitv_nxt6000_config, + &adap->dev->i2c_adap); + if ((adap->fe_adap[0].fe) != NULL) { + st->is_nxt6000 = 1; + return 0; + } + return -EIO; +} + +static int digitv_tuner_attach(struct dvb_usb_adapter *adap) +{ + struct digitv_state *st = adap->dev->priv; + + if (!dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, NULL, DVB_PLL_TDED4)) + return -ENODEV; + + if (st->is_nxt6000) + adap->fe_adap[0].fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params; + + return 0; +} + +static struct rc_map_table rc_map_digitv_table[] = { + { 0x5f55, KEY_0 }, + { 0x6f55, KEY_1 }, + { 0x9f55, KEY_2 }, + { 0xaf55, KEY_3 }, + { 0x5f56, KEY_4 }, + { 0x6f56, KEY_5 }, + { 0x9f56, KEY_6 }, + { 0xaf56, KEY_7 }, + { 0x5f59, KEY_8 }, + { 0x6f59, KEY_9 }, + { 0x9f59, KEY_TV }, + { 0xaf59, KEY_AUX }, + { 0x5f5a, KEY_DVD }, + { 0x6f5a, KEY_POWER }, + { 0x9f5a, KEY_CAMERA }, /* labelled 'Picture' */ + { 0xaf5a, KEY_AUDIO }, + { 0x5f65, KEY_INFO }, + { 0x6f65, KEY_F13 }, /* 16:9 */ + { 0x9f65, KEY_F14 }, /* 14:9 */ + { 0xaf65, KEY_EPG }, + { 0x5f66, KEY_EXIT }, + { 0x6f66, KEY_MENU }, + { 0x9f66, KEY_UP }, + { 0xaf66, KEY_DOWN }, + { 0x5f69, KEY_LEFT }, + { 0x6f69, KEY_RIGHT }, + { 0x9f69, KEY_ENTER }, + { 0xaf69, KEY_CHANNELUP }, + { 0x5f6a, KEY_CHANNELDOWN }, + { 0x6f6a, KEY_VOLUMEUP }, + { 0x9f6a, KEY_VOLUMEDOWN }, + { 0xaf6a, KEY_RED }, + { 0x5f95, KEY_GREEN }, + { 0x6f95, KEY_YELLOW }, + { 0x9f95, KEY_BLUE }, + { 0xaf95, KEY_SUBTITLE }, + { 0x5f96, KEY_F15 }, /* AD */ + { 0x6f96, KEY_TEXT }, + { 0x9f96, KEY_MUTE }, + { 0xaf96, KEY_REWIND }, + { 0x5f99, KEY_STOP }, + { 0x6f99, KEY_PLAY }, + { 0x9f99, KEY_FASTFORWARD }, + { 0xaf99, KEY_F16 }, /* chapter */ + { 0x5f9a, KEY_PAUSE }, + { 0x6f9a, KEY_PLAY }, + { 0x9f9a, KEY_RECORD }, + { 0xaf9a, KEY_F17 }, /* picture in picture */ + { 0x5fa5, KEY_KPPLUS }, /* zoom in */ + { 0x6fa5, KEY_KPMINUS }, /* zoom out */ + { 0x9fa5, KEY_F18 }, /* capture */ + { 0xafa5, KEY_F19 }, /* web */ + { 0x5fa6, KEY_EMAIL }, + { 0x6fa6, KEY_PHONE }, + { 0x9fa6, KEY_PC }, +}; + +static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state) +{ + struct rc_map_table *entry; + int ret, i; + u8 key[4]; + u8 b[4] = { 0 }; + + *event = 0; + *state = REMOTE_NO_KEY_PRESSED; + + ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, key, 4); + if (ret) + return ret; + + /* Tell the device we've read the remote. Not sure how necessary + this is, but the Nebula SDK does it. */ + ret = digitv_ctrl_msg(d, USB_WRITE_REMOTE, 0, b, 4, NULL, 0); + if (ret) + return ret; + + /* if something is inside the buffer, simulate key press */ + if (key[0] != 0) { + for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { + entry = &d->props.rc.legacy.rc_map_table[i]; + + if (rc5_custom(entry) == key[0] && + rc5_data(entry) == key[1]) { + *event = entry->keycode; + *state = REMOTE_KEY_PRESSED; + return 0; + } + } + + deb_rc("key: %*ph\n", 4, key); + } + + return 0; +} + +/* DVB USB Driver stuff */ +static struct dvb_usb_device_properties digitv_properties; + +static int digitv_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct dvb_usb_device *d; + int ret = dvb_usb_device_init(intf, &digitv_properties, THIS_MODULE, &d, + adapter_nr); + if (ret == 0) { + u8 b[4] = { 0 }; + + if (d != NULL) { /* do that only when the firmware is loaded */ + b[0] = 1; + digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0); + + b[0] = 0; + digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0); + } + } + return ret; +} + +enum { + ANCHOR_NEBULA_DIGITV, +}; + +static struct usb_device_id digitv_table[] = { + DVB_USB_DEV(ANCHOR, ANCHOR_NEBULA_DIGITV), + { } +}; + +MODULE_DEVICE_TABLE (usb, digitv_table); + +static struct dvb_usb_device_properties digitv_properties = { + .caps = DVB_USB_IS_AN_I2C_ADAPTER, + + .usb_ctrl = CYPRESS_FX2, + .firmware = "dvb-usb-digitv-02.fw", + + .size_of_priv = sizeof(struct digitv_state), + + .num_adapters = 1, + .adapter = { + { + .num_frontends = 1, + .fe = {{ + .frontend_attach = digitv_frontend_attach, + .tuner_attach = digitv_tuner_attach, + + /* parameter for the MPEG2-data transfer */ + .stream = { + .type = USB_BULK, + .count = 7, + .endpoint = 0x02, + .u = { + .bulk = { + .buffersize = 4096, + } + } + }, + }}, + } + }, + .identify_state = digitv_identify_state, + + .rc.legacy = { + .rc_interval = 1000, + .rc_map_table = rc_map_digitv_table, + .rc_map_size = ARRAY_SIZE(rc_map_digitv_table), + .rc_query = digitv_rc_query, + }, + + .i2c_algo = &digitv_i2c_algo, + + .generic_bulk_ctrl_endpoint = 0x01, + + .num_device_descs = 1, + .devices = { + { "Nebula Electronics uDigiTV DVB-T USB2.0)", + { &digitv_table[ANCHOR_NEBULA_DIGITV], NULL }, + { NULL }, + }, + { NULL }, + } +}; + +static struct usb_driver digitv_driver = { + .name = "dvb_usb_digitv", + .probe = digitv_probe, + .disconnect = dvb_usb_device_exit, + .id_table = digitv_table, +}; + +module_usb_driver(digitv_driver); + +MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>"); +MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0"); +MODULE_VERSION("1.0-alpha"); +MODULE_LICENSE("GPL"); |