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
gl861_i2c_msg(struct dvb_usb_device * d,u8 addr,u8 * wbuf,u16 wlen,u8 * rbuf,u16 rlen)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 */
gl861_i2c_xfer(struct i2c_adapter * adap,struct i2c_msg msg[],int num)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
gl861_i2c_func(struct i2c_adapter * adapter)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
gl861_frontend_attach(struct dvb_usb_adapter * adap)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
gl861_tuner_attach(struct dvb_usb_adapter * adap)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
gl861_init(struct dvb_usb_device * d)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