From 776338e121b9db3156bfb4e21622a0219bbab9d4 Mon Sep 17 00:00:00 2001 From: Johannes Stezenbach Date: Thu, 23 Jun 2005 22:02:35 -0700 Subject: [PATCH] dvb: Add generalized dvb-usb driver Add generalized dvb-usb driver which supports a wide variety of devices. Signed-off-by: Patrick Boettcher Signed-off-by: Johannes Stezenbach Signed-off-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/media/dvb/dvb-usb/digitv.c | 282 +++++++++++++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 drivers/media/dvb/dvb-usb/digitv.c (limited to 'drivers/media/dvb/dvb-usb/digitv.c') diff --git a/drivers/media/dvb/dvb-usb/digitv.c b/drivers/media/dvb/dvb-usb/digitv.c new file mode 100644 index 00000000000..5acf3fde952 --- /dev/null +++ b/drivers/media/dvb/dvb-usb/digitv.c @@ -0,0 +1,282 @@ +/* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0 + * receiver + * + * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de) and + * Allan Third (allan.third@cs.man.ac.uk) + * + * partly based on the SDK published by Nebula Electronics (TODO do we want this line ?) + * + * 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 = { + .name = "Nebula DigiTV USB I2C algorithm", + .id = I2C_ALGO_BIT, + .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 mt352_clock_config[] = { 0x89, 0x38, 0x2d }; + static u8 mt352_reset[] = { 0x50, 0x80 }; + static u8 mt352_mclk_ratio[] = { 0x8b, 0x00 }; + + static u8 mt352_agc_cfg[] = { 0x68, 0xa0 }; + static u8 mt352_adc_ctl_1_cfg[] = { 0x8E, 0xa0 }; + static u8 mt352_acq_ctl[] = { 0x53, 0x50 }; + static u8 mt352_agc_target[] = { 0x67, 0x20 }; + + static u8 mt352_rs_err_per[] = { 0x7c, 0x00, 0x01 }; + static u8 mt352_snr_select[] = { 0x79, 0x00, 0x20 }; + + static u8 mt352_input_freq_1[] = { 0x56, 0x31, 0x05 }; + + static u8 mt352_scan_ctl[] = { 0x88, 0x0f }; + static u8 mt352_capt_range[] = { 0x75, 0x32 }; + + mt352_write(fe, mt352_clock_config, sizeof(mt352_clock_config)); + mt352_write(fe, mt352_reset, sizeof(mt352_reset)); + msleep(1); + mt352_write(fe, mt352_mclk_ratio, sizeof(mt352_mclk_ratio)); + + mt352_write(fe, mt352_agc_cfg, sizeof(mt352_agc_cfg)); + mt352_write(fe, mt352_adc_ctl_1_cfg, sizeof(mt352_adc_ctl_1_cfg)); + mt352_write(fe, mt352_acq_ctl, sizeof(mt352_acq_ctl)); + mt352_write(fe, mt352_agc_target, sizeof(mt352_agc_target)); + + + mt352_write(fe, mt352_rs_err_per, sizeof(mt352_rs_err_per)); + mt352_write(fe, mt352_snr_select, sizeof(mt352_snr_select)); + + mt352_write(fe, mt352_input_freq_1, sizeof(mt352_input_freq_1)); + + mt352_write(fe, mt352_scan_ctl, sizeof(mt352_scan_ctl)); + mt352_write(fe, mt352_capt_range, sizeof(mt352_capt_range)); + + return 0; +} + +static struct mt352_config digitv_mt352_config = { + .demod_address = 0x0, /* ignored by the digitv anyway */ + .demod_init = digitv_mt352_demod_init, + .pll_set = NULL, /* TODO */ +}; + +static struct nxt6000_config digitv_nxt6000_config = { + .demod_address = 0x0, /* ignored by the digitv anyway */ + .clock_inversion = 0x0, + + .pll_init = NULL, + .pll_set = NULL, +}; + +static int digitv_frontend_attach(struct dvb_usb_device *d) +{ + if ((d->fe = mt352_attach(&digitv_mt352_config, &d->i2c_adap)) == NULL) + return 0; + if ((d->fe = nxt6000_attach(&digitv_nxt6000_config, &d->i2c_adap)) == NULL) { + + warn("nxt6000 support is not done yet, in fact you are one of the first " + "person who wants to use this device in Linux. Please report to " + "linux-dvb@linuxtv.org"); + + return 0; + } + return -EIO; +} + +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) +{ + return dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE); +} + +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, + + .streaming_ctrl = NULL, + .pid_filter = NULL, + .pid_filter_ctrl = NULL, + .power_ctrl = NULL, + .frontend_attach = digitv_frontend_attach, + .tuner_attach = NULL, // digitv_tuner_attach, + .read_mac_address = NULL, + + .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 = 2, + .devices = { + { "Nebula Electronics uDigiTV DVB-T USB2.0)", + { &digitv_table[0], NULL }, + { NULL }, + }, + } +}; + +static struct usb_driver digitv_driver = { + .owner = THIS_MODULE, + .name = "Nebula Electronics uDigiTV DVB-T USB2.0 device", + .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 "); +MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0"); +MODULE_VERSION("1.0-alpha"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-70-g09d2