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272 lines
6.7 KiB
272 lines
6.7 KiB
/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
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* receiver
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*
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* Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
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*
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* partly based on the SDK published by Nebula Electronics
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, version 2.
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*
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* see Documentation/dvb/README.dvb-usb for more information
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*/
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#include "digitv.h"
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#include "mt352.h"
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#include "nxt6000.h"
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/* debug */
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int dvb_usb_digitv_debug;
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module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
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MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
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static int digitv_ctrl_msg(struct dvb_usb_device *d,
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u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
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{
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int wo = (rbuf == NULL || rlen == 0); /* write-only */
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u8 sndbuf[7],rcvbuf[7];
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memset(sndbuf,0,7); memset(rcvbuf,0,7);
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sndbuf[0] = cmd;
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sndbuf[1] = vv;
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sndbuf[2] = wo ? wlen : rlen;
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if (wo) {
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memcpy(&sndbuf[3],wbuf,wlen);
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dvb_usb_generic_write(d,sndbuf,7);
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} else {
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dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
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memcpy(rbuf,&rcvbuf[3],rlen);
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}
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return 0;
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}
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/* I2C */
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static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
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{
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struct dvb_usb_device *d = i2c_get_adapdata(adap);
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int i;
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if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
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return -EAGAIN;
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if (num > 2)
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warn("more than 2 i2c messages at a time is not handled yet. TODO.");
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for (i = 0; i < num; i++) {
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/* write/read request */
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if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
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if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
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msg[i+1].buf,msg[i+1].len) < 0)
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break;
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i++;
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} else
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if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
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&msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
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break;
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}
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mutex_unlock(&d->i2c_mutex);
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return i;
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}
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static u32 digitv_i2c_func(struct i2c_adapter *adapter)
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{
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return I2C_FUNC_I2C;
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}
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static struct i2c_algorithm digitv_i2c_algo = {
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.master_xfer = digitv_i2c_xfer,
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.functionality = digitv_i2c_func,
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};
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/* Callbacks for DVB USB */
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static int digitv_identify_state (struct usb_device *udev, struct
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dvb_usb_properties *props, struct dvb_usb_device_description **desc,
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int *cold)
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{
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*cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
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return 0;
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}
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static int digitv_mt352_demod_init(struct dvb_frontend *fe)
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{
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static u8 reset_buf[] = { 0x89, 0x38, 0x8a, 0x2d, 0x50, 0x80 };
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static u8 init_buf[] = { 0x68, 0xa0, 0x8e, 0x40, 0x53, 0x50,
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0x67, 0x20, 0x7d, 0x01, 0x7c, 0x00, 0x7a, 0x00,
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0x79, 0x20, 0x57, 0x05, 0x56, 0x31, 0x88, 0x0f,
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0x75, 0x32 };
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int i;
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for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
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mt352_write(fe, &reset_buf[i], 2);
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msleep(1);
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for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
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mt352_write(fe, &init_buf[i], 2);
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return 0;
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}
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static struct mt352_config digitv_mt352_config = {
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.demod_init = digitv_mt352_demod_init,
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};
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static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
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{
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struct dvb_usb_device *d = fe->dvb->priv;
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u8 b[5];
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dvb_usb_tuner_calc_regs(fe,fep,b, 5);
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return digitv_ctrl_msg(d,USB_WRITE_TUNER,0,&b[1],4,NULL,0);
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}
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static struct nxt6000_config digitv_nxt6000_config = {
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.clock_inversion = 1,
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};
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static int digitv_frontend_attach(struct dvb_usb_device *d)
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{
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if ((d->fe = mt352_attach(&digitv_mt352_config, &d->i2c_adap)) != NULL) {
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d->fe->ops.tuner_ops.calc_regs = dvb_usb_tuner_calc_regs;
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return 0;
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}
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if ((d->fe = nxt6000_attach(&digitv_nxt6000_config, &d->i2c_adap)) != NULL) {
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d->fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
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return 0;
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}
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return -EIO;
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}
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static int digitv_tuner_attach(struct dvb_usb_device *d)
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{
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d->pll_addr = 0x60;
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d->pll_desc = &dvb_pll_tded4;
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return 0;
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}
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static struct dvb_usb_rc_key digitv_rc_keys[] = {
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{ 0x00, 0x16, KEY_POWER }, /* dummy key */
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};
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/* TODO is it really the NEC protocol ? */
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static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
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{
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u8 key[5];
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digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
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/* TODO state, maybe it is VV ? */
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if (key[1] != 0)
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key[0] = 0x01; /* if something is inside the buffer, simulate key press */
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/* call the universal NEC remote processor, to find out the key's state and event */
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dvb_usb_nec_rc_key_to_event(d,key,event,state);
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if (key[0] != 0)
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deb_rc("key: %x %x %x %x %x\n",key[0],key[1],key[2],key[3],key[4]);
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return 0;
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}
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/* DVB USB Driver stuff */
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static struct dvb_usb_properties digitv_properties;
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static int digitv_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct dvb_usb_device *d;
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int ret;
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if ((ret = dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE,&d)) == 0) {
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u8 b[4] = { 0 };
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if (d != NULL) { /* do that only when the firmware is loaded */
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b[0] = 1;
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digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
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b[0] = 0;
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digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
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}
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}
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return ret;
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}
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static struct usb_device_id digitv_table [] = {
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{ USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE (usb, digitv_table);
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static struct dvb_usb_properties digitv_properties = {
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.caps = DVB_USB_IS_AN_I2C_ADAPTER,
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.usb_ctrl = CYPRESS_FX2,
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.firmware = "dvb-usb-digitv-02.fw",
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.size_of_priv = 0,
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.frontend_attach = digitv_frontend_attach,
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.tuner_attach = digitv_tuner_attach,
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.rc_interval = 1000,
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.rc_key_map = digitv_rc_keys,
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.rc_key_map_size = ARRAY_SIZE(digitv_rc_keys),
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.rc_query = digitv_rc_query,
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.identify_state = digitv_identify_state,
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.i2c_algo = &digitv_i2c_algo,
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.generic_bulk_ctrl_endpoint = 0x01,
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/* parameter for the MPEG2-data transfer */
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.urb = {
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.type = DVB_USB_BULK,
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.count = 7,
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.endpoint = 0x02,
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.u = {
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.bulk = {
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.buffersize = 4096,
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}
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}
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},
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.num_device_descs = 1,
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.devices = {
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{ "Nebula Electronics uDigiTV DVB-T USB2.0)",
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{ &digitv_table[0], NULL },
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{ NULL },
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},
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{ NULL },
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}
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};
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static struct usb_driver digitv_driver = {
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.name = "dvb_usb_digitv",
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.probe = digitv_probe,
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.disconnect = dvb_usb_device_exit,
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.id_table = digitv_table,
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};
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/* module stuff */
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static int __init digitv_module_init(void)
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{
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int result;
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if ((result = usb_register(&digitv_driver))) {
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err("usb_register failed. Error number %d",result);
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return result;
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}
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return 0;
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}
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static void __exit digitv_module_exit(void)
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{
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/* deregister this driver from the USB subsystem */
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usb_deregister(&digitv_driver);
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}
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module_init (digitv_module_init);
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module_exit (digitv_module_exit);
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MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
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MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
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MODULE_VERSION("1.0-alpha");
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MODULE_LICENSE("GPL");
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