226 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T4 *5 * Copyright (C) 2008 Antoine Jacquet <royale@zerezo.com>6 * http://royale.zerezo.com/dtv5100/7 *8 * Inspired by gl861.c and au6610.c drivers9 */10 11#include "dtv5100.h"12#include "zl10353.h"13#include "qt1010.h"14 15/* debug */16static int dvb_usb_dtv5100_debug;17module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644);18MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);19DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);20 21struct dtv5100_state {22 unsigned char data[80];23};24 25static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr,26 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)27{28 struct dtv5100_state *st = d->priv;29 unsigned int pipe;30 u8 request;31 u8 type;32 u16 value;33 u16 index;34 35 switch (wlen) {36 case 1:37 /* write { reg }, read { value } */38 pipe = usb_rcvctrlpipe(d->udev, 0);39 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ :40 DTV5100_TUNER_READ);41 type = USB_TYPE_VENDOR | USB_DIR_IN;42 value = 0;43 break;44 case 2:45 /* write { reg, value } */46 pipe = usb_sndctrlpipe(d->udev, 0);47 request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE :48 DTV5100_TUNER_WRITE);49 type = USB_TYPE_VENDOR | USB_DIR_OUT;50 value = wbuf[1];51 break;52 default:53 warn("wlen = %x, aborting.", wlen);54 return -EINVAL;55 }56 index = (addr << 8) + wbuf[0];57 58 memcpy(st->data, rbuf, rlen);59 msleep(1); /* avoid I2C errors */60 return usb_control_msg(d->udev, pipe, request,61 type, value, index, st->data, rlen,62 DTV5100_USB_TIMEOUT);63}64 65/* I2C */66static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],67 int num)68{69 struct dvb_usb_device *d = i2c_get_adapdata(adap);70 int i;71 72 if (num > 2)73 return -EINVAL;74 75 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)76 return -EAGAIN;77 78 for (i = 0; i < num; i++) {79 /* write/read request */80 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {81 if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,82 msg[i].len, msg[i+1].buf,83 msg[i+1].len) < 0)84 break;85 i++;86 } else if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf,87 msg[i].len, NULL, 0) < 0)88 break;89 }90 91 mutex_unlock(&d->i2c_mutex);92 return i;93}94 95static u32 dtv5100_i2c_func(struct i2c_adapter *adapter)96{97 return I2C_FUNC_I2C;98}99 100static struct i2c_algorithm dtv5100_i2c_algo = {101 .master_xfer = dtv5100_i2c_xfer,102 .functionality = dtv5100_i2c_func,103};104 105/* Callbacks for DVB USB */106static struct zl10353_config dtv5100_zl10353_config = {107 .demod_address = DTV5100_DEMOD_ADDR,108 .no_tuner = 1,109 .parallel_ts = 1,110};111 112static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap)113{114 adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config,115 &adap->dev->i2c_adap);116 if (adap->fe_adap[0].fe == NULL)117 return -EIO;118 119 /* disable i2c gate, or it won't work... is this safe? */120 adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL;121 122 return 0;123}124 125static struct qt1010_config dtv5100_qt1010_config = {126 .i2c_address = DTV5100_TUNER_ADDR127};128 129static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap)130{131 return dvb_attach(qt1010_attach,132 adap->fe_adap[0].fe, &adap->dev->i2c_adap,133 &dtv5100_qt1010_config) == NULL ? -ENODEV : 0;134}135 136/* DVB USB Driver stuff */137static struct dvb_usb_device_properties dtv5100_properties;138 139static int dtv5100_probe(struct usb_interface *intf,140 const struct usb_device_id *id)141{142 int i, ret;143 struct usb_device *udev = interface_to_usbdev(intf);144 145 /* initialize non qt1010/zl10353 part? */146 for (i = 0; dtv5100_init[i].request; i++) {147 ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),148 dtv5100_init[i].request,149 USB_TYPE_VENDOR | USB_DIR_OUT,150 dtv5100_init[i].value,151 dtv5100_init[i].index, NULL, 0,152 DTV5100_USB_TIMEOUT);153 if (ret)154 return ret;155 }156 157 ret = dvb_usb_device_init(intf, &dtv5100_properties,158 THIS_MODULE, NULL, adapter_nr);159 if (ret)160 return ret;161 162 return 0;163}164 165enum {166 AME_DTV5100,167};168 169static struct usb_device_id dtv5100_table[] = {170 DVB_USB_DEV(AME, AME_DTV5100),171 { }172};173 174MODULE_DEVICE_TABLE(usb, dtv5100_table);175 176static struct dvb_usb_device_properties dtv5100_properties = {177 .caps = DVB_USB_IS_AN_I2C_ADAPTER,178 .usb_ctrl = DEVICE_SPECIFIC,179 180 .size_of_priv = sizeof(struct dtv5100_state),181 182 .num_adapters = 1,183 .adapter = {{184 .num_frontends = 1,185 .fe = {{186 .frontend_attach = dtv5100_frontend_attach,187 .tuner_attach = dtv5100_tuner_attach,188 189 .stream = {190 .type = USB_BULK,191 .count = 8,192 .endpoint = 0x82,193 .u = {194 .bulk = {195 .buffersize = 4096,196 }197 }198 },199 }},200 } },201 202 .i2c_algo = &dtv5100_i2c_algo,203 204 .num_device_descs = 1,205 .devices = {206 {207 .name = "AME DTV-5100 USB2.0 DVB-T",208 .cold_ids = { NULL },209 .warm_ids = { &dtv5100_table[AME_DTV5100], NULL },210 },211 }212};213 214static struct usb_driver dtv5100_driver = {215 .name = "dvb_usb_dtv5100",216 .probe = dtv5100_probe,217 .disconnect = dvb_usb_device_exit,218 .id_table = dtv5100_table,219};220 221module_usb_driver(dtv5100_driver);222 223MODULE_AUTHOR(DRIVER_AUTHOR);224MODULE_DESCRIPTION(DRIVER_DESC);225MODULE_LICENSE("GPL");226