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// 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++) {
/* 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;
}
static struct usb_device_id digitv_table [] = {
{ USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
{ } /* Terminating entry */
};
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[0], 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");
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