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 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); 15 16 static int gl861_i2c_msg(struct dvb_usb_device *d, u8 addr, 17 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) 18 { 19 u16 index; 20 u16 value = addr << (8 + 1); 21 int wo = (rbuf == NULL || rlen == 0); /* write-only */ 22 u8 req, type; 23 24 if (wo) { 25 req = GL861_REQ_I2C_WRITE; 26 type = GL861_WRITE; 27 } else { /* rw */ 28 req = GL861_REQ_I2C_READ; 29 type = GL861_READ; 30 } 31 32 switch (wlen) { 33 case 1: 34 index = wbuf[0]; 35 break; 36 case 2: 37 index = wbuf[0]; 38 value = value + wbuf[1]; 39 break; 40 default: 41 dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n", 42 KBUILD_MODNAME, wlen); 43 return -EINVAL; 44 } 45 46 msleep(1); /* avoid I2C errors */ 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 */ 53 static 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 (num > 2) 60 return -EINVAL; 61 62 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 63 return -EAGAIN; 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 82 static u32 gl861_i2c_func(struct i2c_adapter *adapter) 83 { 84 return I2C_FUNC_I2C; 85 } 86 87 static struct i2c_algorithm gl861_i2c_algo = { 88 .master_xfer = gl861_i2c_xfer, 89 .functionality = gl861_i2c_func, 90 }; 91 92 /* Callbacks for DVB USB */ 93 static struct zl10353_config gl861_zl10353_config = { 94 .demod_address = 0x0f, 95 .no_tuner = 1, 96 .parallel_ts = 1, 97 }; 98 99 static int gl861_frontend_attach(struct dvb_usb_adapter *adap) 100 { 101 102 adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config, 103 &adap_to_d(adap)->i2c_adap); 104 if (adap->fe[0] == NULL) 105 return -EIO; 106 107 return 0; 108 } 109 110 static struct qt1010_config gl861_qt1010_config = { 111 .i2c_address = 0x62 112 }; 113 114 static int gl861_tuner_attach(struct dvb_usb_adapter *adap) 115 { 116 return dvb_attach(qt1010_attach, 117 adap->fe[0], &adap_to_d(adap)->i2c_adap, 118 &gl861_qt1010_config) == NULL ? -ENODEV : 0; 119 } 120 121 static int gl861_init(struct dvb_usb_device *d) 122 { 123 /* 124 * There is 2 interfaces. Interface 0 is for TV and interface 1 is 125 * for HID remote controller. Interface 0 has 2 alternate settings. 126 * For some reason we need to set interface explicitly, defaulted 127 * as alternate setting 1? 128 */ 129 return usb_set_interface(d->udev, 0, 0); 130 } 131 132 /* DVB USB Driver stuff */ 133 static struct dvb_usb_device_properties gl861_props = { 134 .driver_name = KBUILD_MODNAME, 135 .owner = THIS_MODULE, 136 .adapter_nr = adapter_nr, 137 138 .i2c_algo = &gl861_i2c_algo, 139 .frontend_attach = gl861_frontend_attach, 140 .tuner_attach = gl861_tuner_attach, 141 .init = gl861_init, 142 143 .num_adapters = 1, 144 .adapter = { 145 { 146 .stream = DVB_USB_STREAM_BULK(0x81, 7, 512), 147 } 148 } 149 }; 150 151 static const struct usb_device_id gl861_id_table[] = { 152 { DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801, 153 &gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) }, 154 { DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU, 155 &gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) }, 156 { } 157 }; 158 MODULE_DEVICE_TABLE(usb, gl861_id_table); 159 160 static struct usb_driver gl861_usb_driver = { 161 .name = KBUILD_MODNAME, 162 .id_table = gl861_id_table, 163 .probe = dvb_usbv2_probe, 164 .disconnect = dvb_usbv2_disconnect, 165 .suspend = dvb_usbv2_suspend, 166 .resume = dvb_usbv2_resume, 167 .reset_resume = dvb_usbv2_reset_resume, 168 .no_dynamic_id = 1, 169 .soft_unbind = 1, 170 }; 171 172 module_usb_driver(gl861_usb_driver); 173 174 MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>"); 175 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861"); 176 MODULE_VERSION("0.1"); 177 MODULE_LICENSE("GPL"); 178