1/* DVB USB compliant linux driver for GL861 USB2.0 devices. 2 * 3 * This program is free software; you can redistribute it and/or modify it 4 * under the terms of the GNU General Public License as published by the 5 * Free Software Foundation, version 2. 6 * 7 * see Documentation/dvb/README.dvb-usb for more information 8 */ 9#include "gl861.h" 10 11#include "zl10353.h" 12#include "qt1010.h" 13 14/* debug */ 15static int dvb_usb_gl861_debug; 16module_param_named(debug, dvb_usb_gl861_debug, int, 0644); 17MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." 18 DVB_USB_DEBUG_STATUS); 19DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 20 21static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr, 22 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 23{ 24 u16 index; 25 u16 value = addr << (8 + 1); 26 int wo = (rbuf == NULL || rlen == 0); /* write-only */ 27 u8 req, type; 28 29 if (wo) { 30 req = GL861_REQ_I2C_WRITE; 31 type = GL861_WRITE; 32 } else { /* rw */ 33 req = GL861_REQ_I2C_READ; 34 type = GL861_READ; 35 } 36 37 switch (wlen) { 38 case 1: 39 index = wbuf[0]; 40 break; 41 case 2: 42 index = wbuf[0]; 43 value = value + wbuf[1]; 44 break; 45 default: 46 warn("wlen = %x, aborting.", wlen); 47 return -EINVAL; 48 } 49 50 msleep(1); /* avoid I2C errors */ 51 52 return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, 53 value, index, rbuf, rlen, 2000); 54} 55 56/* I2C */ 57static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], 58 int num) 59{ 60 struct dvb_usb_device *d = i2c_get_adapdata(adap); 61 int i; 62 63 if (num > 2) 64 return -EINVAL; 65 66 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 67 return -EAGAIN; 68 69 for (i = 0; i < num; i++) { 70 /* write/read request */ 71 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 72 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 73 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0) 74 break; 75 i++; 76 } else 77 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 78 msg[i].len, NULL, 0) < 0) 79 break; 80 } 81 82 mutex_unlock(&d->i2c_mutex); 83 return i; 84} 85 86static u32 gl861_i2c_func(struct i2c_adapter *adapter) 87{ 88 return I2C_FUNC_I2C; 89} 90 91static struct i2c_algorithm gl861_i2c_algo = { 92 .master_xfer = gl861_i2c_xfer, 93 .functionality = gl861_i2c_func, 94}; 95 96/* Callbacks for DVB USB */ 97static struct zl10353_config gl861_zl10353_config = { 98 .demod_address = 0x0f, 99 .no_tuner = 1, 100 .parallel_ts = 1, 101}; 102 103static int gl861_frontend_attach(struct dvb_usb_adapter *adap) 104{ 105 106 adap->fe = dvb_attach(zl10353_attach, &gl861_zl10353_config, 107 &adap->dev->i2c_adap); 108 if (adap->fe == NULL) 109 return -EIO; 110 111 return 0; 112} 113 114static struct qt1010_config gl861_qt1010_config = { 115 .i2c_address = 0x62 116}; 117 118static int gl861_tuner_attach(struct dvb_usb_adapter *adap) 119{ 120 return dvb_attach(qt1010_attach, 121 adap->fe, &adap->dev->i2c_adap, 122 &gl861_qt1010_config) == NULL ? -ENODEV : 0; 123} 124 125/* DVB USB Driver stuff */ 126static struct dvb_usb_device_properties gl861_properties; 127 128static int gl861_probe(struct usb_interface *intf, 129 const struct usb_device_id *id) 130{ 131 struct dvb_usb_device *d; 132 struct usb_host_interface *alt; 133 int ret; 134 135 if (intf->num_altsetting < 2) 136 return -ENODEV; 137 138 ret = dvb_usb_device_init(intf, &gl861_properties, THIS_MODULE, &d, 139 adapter_nr); 140 if (ret == 0) { 141 alt = usb_altnum_to_altsetting(intf, 0); 142 143 if (alt == NULL) { 144 deb_rc("not alt found!\n"); 145 return -ENODEV; 146 } 147 148 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber, 149 alt->desc.bAlternateSetting); 150 } 151 152 return ret; 153} 154 155static struct usb_device_id gl861_table [] = { 156 { USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801) }, 157 { USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU) }, 158 { } /* Terminating entry */ 159}; 160MODULE_DEVICE_TABLE(usb, gl861_table); 161 162static struct dvb_usb_device_properties gl861_properties = { 163 .caps = DVB_USB_IS_AN_I2C_ADAPTER, 164 .usb_ctrl = DEVICE_SPECIFIC, 165 166 .size_of_priv = 0, 167 168 .num_adapters = 1, 169 .adapter = {{ 170 171 .frontend_attach = gl861_frontend_attach, 172 .tuner_attach = gl861_tuner_attach, 173 174 .stream = { 175 .type = USB_BULK, 176 .count = 7, 177 .endpoint = 0x81, 178 .u = { 179 .bulk = { 180 .buffersize = 512, 181 } 182 } 183 }, 184 } }, 185 .i2c_algo = &gl861_i2c_algo, 186 187 .num_device_descs = 2, 188 .devices = { 189 { 190 .name = "MSI Mega Sky 55801 DVB-T USB2.0", 191 .cold_ids = { NULL }, 192 .warm_ids = { &gl861_table[0], NULL }, 193 }, 194 { 195 .name = "A-LINK DTU DVB-T USB2.0", 196 .cold_ids = { NULL }, 197 .warm_ids = { &gl861_table[1], NULL }, 198 }, 199 } 200}; 201 202static struct usb_driver gl861_driver = { 203 .name = "dvb_usb_gl861", 204 .probe = gl861_probe, 205 .disconnect = dvb_usb_device_exit, 206 .id_table = gl861_table, 207}; 208 209/* module stuff */ 210static int __init gl861_module_init(void) 211{ 212 int ret; 213 214 ret = usb_register(&gl861_driver); 215 if (ret) 216 err("usb_register failed. Error number %d", ret); 217 218 return ret; 219} 220 221static void __exit gl861_module_exit(void) 222{ 223 /* deregister this driver from the USB subsystem */ 224 usb_deregister(&gl861_driver); 225} 226 227module_init(gl861_module_init); 228module_exit(gl861_module_exit); 229 230MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>"); 231MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861"); 232MODULE_VERSION("0.1"); 233MODULE_LICENSE("GPL"); 234