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 Free 5 * 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))." DVB_USB_DEBUG_STATUS); 18 19static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr, 20 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 21{ 22 u16 index; 23 u16 value = addr << (8 + 1); 24 int wo = (rbuf == NULL || rlen == 0); /* write-only */ 25 u8 req, type; 26 27 if (wo) { 28 req = GL861_REQ_I2C_WRITE; 29 type = GL861_WRITE; 30 } else { /* rw */ 31 req = GL861_REQ_I2C_READ; 32 type = GL861_READ; 33 } 34 35 switch (wlen) { 36 case 1: 37 index = wbuf[0]; 38 break; 39 case 2: 40 index = wbuf[0]; 41 value = value + wbuf[1]; 42 break; 43 default: 44 warn("wlen = %x, aborting.", wlen); 45 return -EINVAL; 46 } 47 48 return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, 49 value, index, rbuf, rlen, 2000); 50} 51 52/* I2C */ 53static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], 54 int num) 55{ 56 struct dvb_usb_device *d = i2c_get_adapdata(adap); 57 int i; 58 59 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 60 return -EAGAIN; 61 62 if (num > 2) 63 return -EINVAL; 64 65 for (i = 0; i < num; i++) { 66 /* write/read request */ 67 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 68 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 69 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0) 70 break; 71 i++; 72 } else 73 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 74 msg[i].len, NULL, 0) < 0) 75 break; 76 } 77 78 mutex_unlock(&d->i2c_mutex); 79 return i; 80} 81 82static u32 gl861_i2c_func(struct i2c_adapter *adapter) 83{ 84 return I2C_FUNC_I2C; 85} 86 87static struct i2c_algorithm gl861_i2c_algo = { 88 .master_xfer = gl861_i2c_xfer, 89 .functionality = gl861_i2c_func, 90}; 91 92/* Callbacks for DVB USB */ 93static int gl861_identify_state(struct usb_device *udev, 94 struct dvb_usb_device_properties *props, 95 struct dvb_usb_device_description **desc, 96 int *cold) 97{ 98 *cold = 0; 99 100 return 0; 101} 102 103static struct zl10353_config gl861_zl10353_config = { 104 .demod_address = 0x0f, 105 .no_tuner = 1, 106 .parallel_ts = 1, 107}; 108 109static int gl861_frontend_attach(struct dvb_usb_adapter *adap) 110{ 111 if ((adap->fe = dvb_attach(zl10353_attach, &gl861_zl10353_config, 112 &adap->dev->i2c_adap)) != NULL) { 113 return 0; 114 } 115 116 return -EIO; 117} 118 119static struct qt1010_config gl861_qt1010_config = { 120 .i2c_address = 0x62 121}; 122 123static int gl861_tuner_attach(struct dvb_usb_adapter *adap) 124{ 125 return dvb_attach(qt1010_attach, 126 adap->fe, &adap->dev->i2c_adap, 127 &gl861_qt1010_config) == NULL ? -ENODEV : 0; 128} 129 130/* DVB USB Driver stuff */ 131static struct dvb_usb_device_properties gl861_properties; 132 133static int gl861_probe(struct usb_interface *intf, 134 const struct usb_device_id *id) 135{ 136 struct dvb_usb_device *d; 137 struct usb_host_interface *alt; 138 int ret; 139 140 if (intf->num_altsetting < 2) 141 return -ENODEV; 142 143 if ((ret = dvb_usb_device_init(intf, &gl861_properties, THIS_MODULE, &d)) == 0) { 144 alt = usb_altnum_to_altsetting(intf, 0); 145 146 if (alt == NULL) { 147 deb_rc("not alt found!\n"); 148 return -ENODEV; 149 } 150 151 ret = usb_set_interface(d->udev, alt->desc.bInterfaceNumber, 152 alt->desc.bAlternateSetting); 153 } 154 155 return ret; 156} 157 158static struct usb_device_id gl861_table [] = { 159 { USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801) }, 160 { } /* Terminating entry */ 161}; 162MODULE_DEVICE_TABLE (usb, gl861_table); 163 164static struct dvb_usb_device_properties gl861_properties = { 165 .caps = DVB_USB_IS_AN_I2C_ADAPTER, 166 .usb_ctrl = DEVICE_SPECIFIC, 167 168 .size_of_priv = 0, 169 170 .identify_state = gl861_identify_state, 171 .num_adapters = 1, 172 .adapter = {{ 173 174 .frontend_attach = gl861_frontend_attach, 175 .tuner_attach = gl861_tuner_attach, 176 177 .stream = { 178 .type = USB_BULK, 179 .count = 7, 180 .endpoint = 0x81, 181 .u = { 182 .bulk = { 183 .buffersize = 512, 184 } 185 } 186 }, 187 }}, 188 .i2c_algo = &gl861_i2c_algo, 189 190 .num_device_descs = 1, 191 .devices = { 192 { "MSI Mega Sky 55801 DVB-T USB2.0", 193 { &gl861_table[0], NULL }, 194 { NULL }, 195 }, 196 } 197}; 198 199static struct usb_driver gl861_driver = { 200 .name = "dvb_usb_gl861", 201 .probe = gl861_probe, 202 .disconnect = dvb_usb_device_exit, 203 .id_table = gl861_table, 204}; 205 206/* module stuff */ 207static int __init gl861_module_init(void) 208{ 209 int ret; 210 211 if ((ret = usb_register(&gl861_driver))) { 212 err("usb_register failed. Error number %d", ret); 213 return ret; 214 } 215 216 return 0; 217} 218 219static void __exit gl861_module_exit(void) 220{ 221 /* deregister this driver from the USB subsystem */ 222 usb_deregister(&gl861_driver); 223} 224 225module_init (gl861_module_init); 226module_exit (gl861_module_exit); 227 228MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>"); 229MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861"); 230MODULE_VERSION("0.1"); 231MODULE_LICENSE("GPL"); 232