/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
* receiver
*
* Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
*
* partly based on the SDK published by Nebula Electronics
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, version 2.
*
* see Documentation/dvb/README.dvb-usb for more information
*/
#include "digitv.h"
#include "mt352.h"
#include "nxt6000.h"
/* debug */
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);
static int digitv_ctrl_msg(struct dvb_usb_device *d,
u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
{
int wo = (rbuf == NULL || rlen == 0); /* write-only */
u8 sndbuf[7],rcvbuf[7];
memset(sndbuf,0,7); memset(rcvbuf,0,7);
sndbuf[0] = cmd;
sndbuf[1] = vv;
sndbuf[2] = wo ? wlen : rlen;
if (!wo) {
memcpy(&sndbuf[3],wbuf,wlen);
dvb_usb_generic_write(d,sndbuf,7);
} else {
dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
memcpy(rbuf,&rcvbuf[3],rlen);
}
return 0;
}
/* 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 (down_interruptible(&d->i2c_sem) < 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;
}
up(&d->i2c_sem);
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, struct
dvb_usb_properties *props, 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,
.pll_set = dvb_usb_pll_set,
};
static int digitv_nxt6000_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
{
struct dvb_usb_device *d = fe->dvb->priv;
u8 b[5];
dvb_usb_pll_set(fe,fep,b);
return digitv_ctrl_msg(d,USB_WRITE_TUNER,0,&b[1],4,NULL,0);
}
static struct nxt6000_config digitv_nxt6000_config = {
.clock_inversion = 1,
.pll_set = digitv_nxt6000_pll_set,
};
static int digitv_frontend_attach(struct dvb_usb_device *d)
{
if ((d->fe = mt352_attach(&digitv_mt352_config, &d->i2c_adap)) != NULL ||
(d->fe = nxt6000_attach(&digitv_nxt6000_config, &d->i2c_adap)) != NULL)
return 0;
return -EIO;
}
static int digitv_tuner_attach(struct dvb_usb_device *d)
{
d->pll_addr = 0x60;
d->pll_desc = &dvb_pll_tded4;
return 0;
}
static struct dvb_usb_rc_key digitv_rc_keys[] = {
{ 0x00, 0x16, KEY_POWER }, /* dummy key */
};
/* TODO is it really the NEC protocol ? */
int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
u8 key[5];
digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
/* TODO state, maybe it is VV ? */
if (key[1] != 0)
key[0] = 0x01; /* if something is inside the buffer, simulate key press */
/* call the universal NEC remote processor, to find out the key's state and event */
dvb_usb_nec_rc_key_to_event(d,key,event,state);
if (key[0] != 0)
deb_rc("key: %x %x %x %x %x\n",key[0],key[1],key[2],key[3],key[4]);
return 0;
}
/* DVB USB Driver stuff */
static struct dvb_usb_properties digitv_properties;
static int digitv_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct dvb_usb_device *d;
int ret;
if ((ret = dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE,&d)) == 0) {
u8 b[4] = { 0 };
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_properties digitv_properties = {
.caps = DVB_USB_IS_AN_I2C_ADAPTER,
.usb_ctrl = CYPRESS_FX2,
.firmware = "dvb-usb-digitv-01.fw",
.size_of_priv = 0,
.frontend_attach = digitv_frontend_attach,
.tuner_attach = digitv_tuner_attach,
.rc_interval = 1000,
.rc_key_map = digitv_rc_keys,
.rc_key_map_size = ARRAY_SIZE(digitv_rc_keys),
.rc_query = digitv_rc_query,
.identify_state = digitv_identify_state,
.i2c_algo = &digitv_i2c_algo,
.generic_bulk_ctrl_endpoint = 0x01,
/* parameter for the MPEG2-data transfer */
.urb = {
.type = DVB_USB_BULK,
.count = 7,
.endpoint = 0x02,
.u = {
.bulk = {
.buffersize = 4096,
}
}
},
.num_device_descs = 1,
.devices = {
{ "Nebula Electronics uDigiTV DVB-T USB2.0)",
{ &digitv_table[0], NULL },
{ NULL },
},
}
};
static struct usb_driver digitv_driver = {
.owner = THIS_MODULE,
.name = "dvb_usb_digitv",
.probe = digitv_probe,
.disconnect = dvb_usb_device_exit,
.id_table = digitv_table,
};
/* module stuff */
static int __init digitv_module_init(void)
{
int result;
if ((result = usb_register(&digitv_driver))) {
err("usb_register failed. Error number %d",result);
return result;
}
return 0;
}
static void __exit digitv_module_exit(void)
{
/* deregister this driver from the USB subsystem */
usb_deregister(&digitv_driver);
}
module_init (digitv_module_init);
module_exit (digitv_module_exit);
MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
MODULE_VERSION("1.0-alpha");
MODULE_LICENSE("GPL");
