Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / media / usb / dvb-usb-v2 / gl861.c
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");