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/media/dvb-drivers/dvb-usb.rst 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 u8 *buf; 24 int ret; 25 26 if (wo) { 27 req = GL861_REQ_I2C_WRITE; 28 type = GL861_WRITE; 29 } else { /* rw */ 30 req = GL861_REQ_I2C_READ; 31 type = GL861_READ; 32 } 33 34 switch (wlen) { 35 case 1: 36 index = wbuf[0]; 37 break; 38 case 2: 39 index = wbuf[0]; 40 value = value + wbuf[1]; 41 break; 42 default: 43 dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n", 44 KBUILD_MODNAME, wlen); 45 return -EINVAL; 46 } 47 buf = NULL; 48 if (rlen > 0) { 49 buf = kmalloc(rlen, GFP_KERNEL); 50 if (!buf) 51 return -ENOMEM; 52 } 53 usleep_range(1000, 2000); /* avoid I2C errors */ 54 55 ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type, 56 value, index, buf, rlen, 2000); 57 if (rlen > 0) { 58 if (ret > 0) 59 memcpy(rbuf, buf, rlen); 60 kfree(buf); 61 } 62 63 return ret; 64 } 65 66 /* I2C */ 67 static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], 68 int num) 69 { 70 struct dvb_usb_device *d = i2c_get_adapdata(adap); 71 int i; 72 73 if (num > 2) 74 return -EINVAL; 75 76 if (mutex_lock_interruptible(&d->i2c_mutex) < 0) 77 return -EAGAIN; 78 79 for (i = 0; i < num; i++) { 80 /* write/read request */ 81 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { 82 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 83 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0) 84 break; 85 i++; 86 } else 87 if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf, 88 msg[i].len, NULL, 0) < 0) 89 break; 90 } 91 92 mutex_unlock(&d->i2c_mutex); 93 return i; 94 } 95 96 static u32 gl861_i2c_func(struct i2c_adapter *adapter) 97 { 98 return I2C_FUNC_I2C; 99 } 100 101 static struct i2c_algorithm gl861_i2c_algo = { 102 .master_xfer = gl861_i2c_xfer, 103 .functionality = gl861_i2c_func, 104 }; 105 106 /* Callbacks for DVB USB */ 107 static struct zl10353_config gl861_zl10353_config = { 108 .demod_address = 0x0f, 109 .no_tuner = 1, 110 .parallel_ts = 1, 111 }; 112 113 static int gl861_frontend_attach(struct dvb_usb_adapter *adap) 114 { 115 116 adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config, 117 &adap_to_d(adap)->i2c_adap); 118 if (adap->fe[0] == NULL) 119 return -EIO; 120 121 return 0; 122 } 123 124 static struct qt1010_config gl861_qt1010_config = { 125 .i2c_address = 0x62 126 }; 127 128 static int gl861_tuner_attach(struct dvb_usb_adapter *adap) 129 { 130 return dvb_attach(qt1010_attach, 131 adap->fe[0], &adap_to_d(adap)->i2c_adap, 132 &gl861_qt1010_config) == NULL ? -ENODEV : 0; 133 } 134 135 static int gl861_init(struct dvb_usb_device *d) 136 { 137 /* 138 * There is 2 interfaces. Interface 0 is for TV and interface 1 is 139 * for HID remote controller. Interface 0 has 2 alternate settings. 140 * For some reason we need to set interface explicitly, defaulted 141 * as alternate setting 1? 142 */ 143 return usb_set_interface(d->udev, 0, 0); 144 } 145 146 /* DVB USB Driver stuff */ 147 static struct dvb_usb_device_properties gl861_props = { 148 .driver_name = KBUILD_MODNAME, 149 .owner = THIS_MODULE, 150 .adapter_nr = adapter_nr, 151 152 .i2c_algo = &gl861_i2c_algo, 153 .frontend_attach = gl861_frontend_attach, 154 .tuner_attach = gl861_tuner_attach, 155 .init = gl861_init, 156 157 .num_adapters = 1, 158 .adapter = { 159 { 160 .stream = DVB_USB_STREAM_BULK(0x81, 7, 512), 161 } 162 } 163 }; 164 165 static const struct usb_device_id gl861_id_table[] = { 166 { DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801, 167 &gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) }, 168 { DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU, 169 &gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) }, 170 { } 171 }; 172 MODULE_DEVICE_TABLE(usb, gl861_id_table); 173 174 static struct usb_driver gl861_usb_driver = { 175 .name = KBUILD_MODNAME, 176 .id_table = gl861_id_table, 177 .probe = dvb_usbv2_probe, 178 .disconnect = dvb_usbv2_disconnect, 179 .suspend = dvb_usbv2_suspend, 180 .resume = dvb_usbv2_resume, 181 .reset_resume = dvb_usbv2_reset_resume, 182 .no_dynamic_id = 1, 183 .soft_unbind = 1, 184 }; 185 186 module_usb_driver(gl861_usb_driver); 187 188 MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>"); 189 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861"); 190 MODULE_VERSION("0.1"); 191 MODULE_LICENSE("GPL"); 192