1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * DVB USB Linux driver for Alcor Micro AU6610 DVB-T USB2.0.
4 *
5 * Copyright (C) 2006 Antti Palosaari <crope@iki.fi>
6 */
7
8#include "au6610.h"
9#include "zl10353.h"
10#include "qt1010.h"
11
12DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
13
14static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
15 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
16{
17 int ret;
18 u16 index;
19 u8 *usb_buf;
20
21 /*
22 * allocate enough for all known requests,
23 * read returns 5 and write 6 bytes
24 */
25 usb_buf = kmalloc(size: 6, GFP_KERNEL);
26 if (!usb_buf)
27 return -ENOMEM;
28
29 switch (wlen) {
30 case 1:
31 index = wbuf[0] << 8;
32 break;
33 case 2:
34 index = wbuf[0] << 8;
35 index += wbuf[1];
36 break;
37 default:
38 dev_err(&d->udev->dev, "%s: wlen=%d, aborting\n",
39 KBUILD_MODNAME, wlen);
40 ret = -EINVAL;
41 goto error;
42 }
43
44 ret = usb_control_msg(dev: d->udev, usb_rcvctrlpipe(d->udev, 0), request: operation,
45 USB_TYPE_VENDOR|USB_DIR_IN, value: addr << 1, index,
46 data: usb_buf, size: 6, AU6610_USB_TIMEOUT);
47
48 dvb_usb_dbg_usb_control_msg(d->udev, operation,
49 (USB_TYPE_VENDOR|USB_DIR_IN), addr << 1, index,
50 usb_buf, 6);
51
52 if (ret < 0)
53 goto error;
54
55 switch (operation) {
56 case AU6610_REQ_I2C_READ:
57 case AU6610_REQ_USB_READ:
58 /* requested value is always 5th byte in buffer */
59 rbuf[0] = usb_buf[4];
60 }
61error:
62 kfree(objp: usb_buf);
63 return ret;
64}
65
66static int au6610_i2c_msg(struct dvb_usb_device *d, u8 addr,
67 u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen)
68{
69 u8 request;
70 u8 wo = (rbuf == NULL || rlen == 0); /* write-only */
71
72 if (wo) {
73 request = AU6610_REQ_I2C_WRITE;
74 } else { /* rw */
75 request = AU6610_REQ_I2C_READ;
76 }
77
78 return au6610_usb_msg(d, operation: request, addr, wbuf, wlen, rbuf, rlen);
79}
80
81
82/* I2C */
83static int au6610_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
84 int num)
85{
86 struct dvb_usb_device *d = i2c_get_adapdata(adap);
87 int i;
88
89 if (num > 2)
90 return -EINVAL;
91
92 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
93 return -EAGAIN;
94
95 for (i = 0; i < num; i++) {
96 /* write/read request */
97 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
98 if (au6610_i2c_msg(d, addr: msg[i].addr, wbuf: msg[i].buf,
99 wlen: msg[i].len, rbuf: msg[i+1].buf,
100 rlen: msg[i+1].len) < 0)
101 break;
102 i++;
103 } else if (au6610_i2c_msg(d, addr: msg[i].addr, wbuf: msg[i].buf,
104 wlen: msg[i].len, NULL, rlen: 0) < 0)
105 break;
106 }
107
108 mutex_unlock(lock: &d->i2c_mutex);
109 return i;
110}
111
112
113static u32 au6610_i2c_func(struct i2c_adapter *adapter)
114{
115 return I2C_FUNC_I2C;
116}
117
118static struct i2c_algorithm au6610_i2c_algo = {
119 .master_xfer = au6610_i2c_xfer,
120 .functionality = au6610_i2c_func,
121};
122
123/* Callbacks for DVB USB */
124static struct zl10353_config au6610_zl10353_config = {
125 .demod_address = 0x0f,
126 .no_tuner = 1,
127 .parallel_ts = 1,
128};
129
130static int au6610_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
131{
132 adap->fe[0] = dvb_attach(zl10353_attach, &au6610_zl10353_config,
133 &adap_to_d(adap)->i2c_adap);
134 if (adap->fe[0] == NULL)
135 return -ENODEV;
136
137 return 0;
138}
139
140static struct qt1010_config au6610_qt1010_config = {
141 .i2c_address = 0x62
142};
143
144static int au6610_qt1010_tuner_attach(struct dvb_usb_adapter *adap)
145{
146 return dvb_attach(qt1010_attach, adap->fe[0],
147 &adap_to_d(adap)->i2c_adap,
148 &au6610_qt1010_config) == NULL ? -ENODEV : 0;
149}
150
151static int au6610_init(struct dvb_usb_device *d)
152{
153 /* TODO: this functionality belongs likely to the streaming control */
154 /* bInterfaceNumber 0, bAlternateSetting 5 */
155 return usb_set_interface(dev: d->udev, ifnum: 0, alternate: 5);
156}
157
158static struct dvb_usb_device_properties au6610_props = {
159 .driver_name = KBUILD_MODNAME,
160 .owner = THIS_MODULE,
161 .adapter_nr = adapter_nr,
162
163 .i2c_algo = &au6610_i2c_algo,
164 .frontend_attach = au6610_zl10353_frontend_attach,
165 .tuner_attach = au6610_qt1010_tuner_attach,
166 .init = au6610_init,
167
168 .num_adapters = 1,
169 .adapter = {
170 {
171 .stream = DVB_USB_STREAM_ISOC(0x82, 5, 40, 942, 1),
172 },
173 },
174};
175
176static const struct usb_device_id au6610_id_table[] = {
177 { DVB_USB_DEVICE(USB_VID_ALCOR_MICRO, USB_PID_SIGMATEK_DVB_110,
178 &au6610_props, "Sigmatek DVB-110", NULL) },
179 { }
180};
181MODULE_DEVICE_TABLE(usb, au6610_id_table);
182
183static struct usb_driver au6610_driver = {
184 .name = KBUILD_MODNAME,
185 .id_table = au6610_id_table,
186 .probe = dvb_usbv2_probe,
187 .disconnect = dvb_usbv2_disconnect,
188 .suspend = dvb_usbv2_suspend,
189 .resume = dvb_usbv2_resume,
190 .reset_resume = dvb_usbv2_reset_resume,
191 .no_dynamic_id = 1,
192 .soft_unbind = 1,
193};
194
195module_usb_driver(au6610_driver);
196
197MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
198MODULE_DESCRIPTION("Driver for Alcor Micro AU6610 DVB-T USB2.0");
199MODULE_VERSION("0.1");
200MODULE_LICENSE("GPL");
201

source code of linux/drivers/media/usb/dvb-usb-v2/au6610.c