Merge tag 'v3.6-rc3' into staging/for_v3.7
[sfrench/cifs-2.6.git] / 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                 pr_err("%s: wlen=%d, aborting\n", KBUILD_MODNAME, wlen);
42                 return -EINVAL;
43         }
44
45         msleep(1); /* avoid I2C errors */
46
47         return usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), req, type,
48                                value, index, rbuf, rlen, 2000);
49 }
50
51 /* I2C */
52 static int gl861_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
53                           int num)
54 {
55         struct dvb_usb_device *d = i2c_get_adapdata(adap);
56         int i;
57
58         if (num > 2)
59                 return -EINVAL;
60
61         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
62                 return -EAGAIN;
63
64         for (i = 0; i < num; i++) {
65                 /* write/read request */
66                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
67                         if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
68                                 msg[i].len, msg[i+1].buf, msg[i+1].len) < 0)
69                                 break;
70                         i++;
71                 } else
72                         if (gl861_i2c_msg(d, msg[i].addr, msg[i].buf,
73                                           msg[i].len, NULL, 0) < 0)
74                                 break;
75         }
76
77         mutex_unlock(&d->i2c_mutex);
78         return i;
79 }
80
81 static u32 gl861_i2c_func(struct i2c_adapter *adapter)
82 {
83         return I2C_FUNC_I2C;
84 }
85
86 static struct i2c_algorithm gl861_i2c_algo = {
87         .master_xfer   = gl861_i2c_xfer,
88         .functionality = gl861_i2c_func,
89 };
90
91 /* Callbacks for DVB USB */
92 static struct zl10353_config gl861_zl10353_config = {
93         .demod_address = 0x0f,
94         .no_tuner = 1,
95         .parallel_ts = 1,
96 };
97
98 static int gl861_frontend_attach(struct dvb_usb_adapter *adap)
99 {
100
101         adap->fe[0] = dvb_attach(zl10353_attach, &gl861_zl10353_config,
102                 &adap_to_d(adap)->i2c_adap);
103         if (adap->fe[0] == NULL)
104                 return -EIO;
105
106         return 0;
107 }
108
109 static struct qt1010_config gl861_qt1010_config = {
110         .i2c_address = 0x62
111 };
112
113 static int gl861_tuner_attach(struct dvb_usb_adapter *adap)
114 {
115         return dvb_attach(qt1010_attach,
116                           adap->fe[0], &adap_to_d(adap)->i2c_adap,
117                           &gl861_qt1010_config) == NULL ? -ENODEV : 0;
118 }
119
120 static int gl861_init(struct dvb_usb_device *d)
121 {
122         /*
123          * There is 2 interfaces. Interface 0 is for TV and interface 1 is
124          * for HID remote controller. Interface 0 has 2 alternate settings.
125          * For some reason we need to set interface explicitly, defaulted
126          * as alternate setting 1?
127          */
128         return usb_set_interface(d->udev, 0, 0);
129 }
130
131 /* DVB USB Driver stuff */
132 static struct dvb_usb_device_properties gl861_props = {
133         .driver_name = KBUILD_MODNAME,
134         .owner = THIS_MODULE,
135         .adapter_nr = adapter_nr,
136
137         .i2c_algo = &gl861_i2c_algo,
138         .frontend_attach = gl861_frontend_attach,
139         .tuner_attach = gl861_tuner_attach,
140         .init = gl861_init,
141
142         .num_adapters = 1,
143         .adapter = {
144                 {
145                         .stream = DVB_USB_STREAM_BULK(0x81, 7, 512),
146                 }
147         }
148 };
149
150 static const struct usb_device_id gl861_id_table[] = {
151         { DVB_USB_DEVICE(USB_VID_MSI, USB_PID_MSI_MEGASKY580_55801,
152                 &gl861_props, "MSI Mega Sky 55801 DVB-T USB2.0", NULL) },
153         { DVB_USB_DEVICE(USB_VID_ALINK, USB_VID_ALINK_DTU,
154                 &gl861_props, "A-LINK DTU DVB-T USB2.0", NULL) },
155         { }
156 };
157 MODULE_DEVICE_TABLE(usb, gl861_id_table);
158
159 static struct usb_driver gl861_usb_driver = {
160         .name = KBUILD_MODNAME,
161         .id_table = gl861_id_table,
162         .probe = dvb_usbv2_probe,
163         .disconnect = dvb_usbv2_disconnect,
164         .suspend = dvb_usbv2_suspend,
165         .resume = dvb_usbv2_resume,
166         .no_dynamic_id = 1,
167         .soft_unbind = 1,
168 };
169
170 module_usb_driver(gl861_usb_driver);
171
172 MODULE_AUTHOR("Carl Lundqvist <comabug@gmail.com>");
173 MODULE_DESCRIPTION("Driver MSI Mega Sky 580 DVB-T USB2.0 / GL861");
174 MODULE_VERSION("0.1");
175 MODULE_LICENSE("GPL");