1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T 4 * 5 * Copyright (C) 2008 Antoine Jacquet <royale@zerezo.com> 6 * http://royale.zerezo.com/dtv5100/ 7 * 8 * Inspired by gl861.c and au6610.c drivers 9 */ 10 11 #include "dtv5100.h" 12 #include "zl10353.h" 13 #include "qt1010.h" 14 15 /* debug */ 16 static int dvb_usb_dtv5100_debug; 17 module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644); 18 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS); 19 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 20 21 struct dtv5100_state { 22 unsigned char data[80]; 23 }; 24 25 static 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 */ 66 static 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 95 static u32 dtv5100_i2c_func(struct i2c_adapter *adapter) 96 { 97 return I2C_FUNC_I2C; 98 } 99 100 static struct i2c_algorithm dtv5100_i2c_algo = { 101 .master_xfer = dtv5100_i2c_xfer, 102 .functionality = dtv5100_i2c_func, 103 }; 104 105 /* Callbacks for DVB USB */ 106 static struct zl10353_config dtv5100_zl10353_config = { 107 .demod_address = DTV5100_DEMOD_ADDR, 108 .no_tuner = 1, 109 .parallel_ts = 1, 110 }; 111 112 static 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 } 124 125 static struct qt1010_config dtv5100_qt1010_config = { 126 .i2c_address = DTV5100_TUNER_ADDR 127 }; 128 129 static 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 */ 137 static struct dvb_usb_device_properties dtv5100_properties; 138 139 static 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 } 164 165 enum { 166 AME_DTV5100, 167 }; 168 169 static struct usb_device_id dtv5100_table[] = { 170 DVB_USB_DEV(AME, AME_DTV5100), 171 { } 172 }; 173 174 MODULE_DEVICE_TABLE(usb, dtv5100_table); 175 176 static 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 }; 213 214 static 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 }; 220 221 module_usb_driver(dtv5100_driver); 222 223 MODULE_AUTHOR(DRIVER_AUTHOR); 224 MODULE_DESCRIPTION(DRIVER_DESC); 225 MODULE_LICENSE("GPL"); 226