1 /*
2 * DVB USB Linux driver for Intel CE6230 DVB-T USB2.0 receiver
3 *
4 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 */
21
22 #include "ce6230.h"
23 #include "zl10353.h"
24 #include "mxl5005s.h"
25
26 /* debug */
27 static int dvb_usb_ce6230_debug;
28 module_param_named(debug, dvb_usb_ce6230_debug, int, 0644);
29 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
30 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
31
32 static struct zl10353_config ce6230_zl10353_config;
33
34 static int ce6230_rw_udev(struct usb_device *udev, struct req_t *req)
35 {
36 int ret;
37 unsigned int pipe;
38 u8 request;
39 u8 requesttype;
40 u16 value;
41 u16 index;
42 u8 buf[req->data_len];
43
44 request = req->cmd;
45 value = req->value;
46 index = req->index;
47
48 switch (req->cmd) {
49 case I2C_READ:
50 case DEMOD_READ:
51 case REG_READ:
52 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
53 break;
54 case I2C_WRITE:
55 case DEMOD_WRITE:
56 case REG_WRITE:
57 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
58 break;
59 default:
60 err("unknown command:%02x", req->cmd);
61 ret = -EPERM;
62 goto error;
63 }
64
65 if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
66 /* write */
67 memcpy(buf, req->data, req->data_len);
68 pipe = usb_sndctrlpipe(udev, 0);
69 } else {
70 /* read */
71 pipe = usb_rcvctrlpipe(udev, 0);
72 }
73
74 msleep(1); /* avoid I2C errors */
75
76 ret = usb_control_msg(udev, pipe, request, requesttype, value, index,
77 buf, sizeof(buf), CE6230_USB_TIMEOUT);
78
79 ce6230_debug_dump(request, requesttype, value, index, buf,
80 req->data_len, deb_xfer);
81
82 if (ret < 0)
83 deb_info("%s: usb_control_msg failed:%d\n", __func__, ret);
84 else
85 ret = 0;
86
87 /* read request, copy returned data to return buf */
88 if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
89 memcpy(req->data, buf, req->data_len);
90
91 error:
92 return ret;
93 }
94
95 static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct req_t *req)
96 {
97 return ce6230_rw_udev(d->udev, req);
98 }
99
100 /* I2C */
101 static int ce6230_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
102 int num)
103 {
104 struct dvb_usb_device *d = i2c_get_adapdata(adap);
105 int i = 0;
106 struct req_t req;
107 int ret = 0;
108 memset(&req, 0, sizeof(&req));
109
110 if (num > 2)
111 return -EINVAL;
112
113 if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
114 return -EAGAIN;
115
116 while (i < num) {
117 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
118 if (msg[i].addr ==
119 ce6230_zl10353_config.demod_address) {
120 req.cmd = DEMOD_READ;
121 req.value = msg[i].addr >> 1;
122 req.index = msg[i].buf[0];
123 req.data_len = msg[i+1].len;
124 req.data = &msg[i+1].buf[0];
125 ret = ce6230_ctrl_msg(d, &req);
126 } else {
127 err("i2c read not implemented");
128 ret = -EPERM;
129 }
130 i += 2;
131 } else {
132 if (msg[i].addr ==
133 ce6230_zl10353_config.demod_address) {
134 req.cmd = DEMOD_WRITE;
135 req.value = msg[i].addr >> 1;
136 req.index = msg[i].buf[0];
137 req.data_len = msg[i].len-1;
138 req.data = &msg[i].buf[1];
139 ret = ce6230_ctrl_msg(d, &req);
140 } else {
141 req.cmd = I2C_WRITE;
142 req.value = 0x2000 + (msg[i].addr >> 1);
143 req.index = 0x0000;
144 req.data_len = msg[i].len;
145 req.data = &msg[i].buf[0];
146 ret = ce6230_ctrl_msg(d, &req);
147 }
148 i += 1;
149 }
150 if (ret)
151 break;
152 }
153
154 mutex_unlock(&d->i2c_mutex);
155 return ret ? ret : i;
156 }
157
158 static u32 ce6230_i2c_func(struct i2c_adapter *adapter)
159 {
160 return I2C_FUNC_I2C;
161 }
162
163 static struct i2c_algorithm ce6230_i2c_algo = {
164 .master_xfer = ce6230_i2c_xfer,
165 .functionality = ce6230_i2c_func,
166 };
167
168 /* Callbacks for DVB USB */
169 static struct zl10353_config ce6230_zl10353_config = {
170 .demod_address = 0x1e,
171 .adc_clock = 450000,
172 .if2 = 45700,
173 .no_tuner = 1,
174 .parallel_ts = 1,
175 .clock_ctl_1 = 0x34,
176 .pll_0 = 0x0e,
177 };
178
179 static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
180 {
181 deb_info("%s:\n", __func__);
182 adap->fe = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
183 &adap->dev->i2c_adap);
184 if (adap->fe == NULL)
185 return -ENODEV;
186 return 0;
187 }
188
189 static struct mxl5005s_config ce6230_mxl5003s_config = {
190 .i2c_address = 0xc6,
191 .if_freq = IF_FREQ_4570000HZ,
192 .xtal_freq = CRYSTAL_FREQ_16000000HZ,
193 .agc_mode = MXL_SINGLE_AGC,
194 .tracking_filter = MXL_TF_DEFAULT,
195 .rssi_enable = MXL_RSSI_ENABLE,
196 .cap_select = MXL_CAP_SEL_ENABLE,
197 .div_out = MXL_DIV_OUT_4,
198 .clock_out = MXL_CLOCK_OUT_DISABLE,
199 .output_load = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
200 .top = MXL5005S_TOP_25P2,
201 .mod_mode = MXL_DIGITAL_MODE,
202 .if_mode = MXL_ZERO_IF,
203 .AgcMasterByte = 0x00,
204 };
205
206 static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
207 {
208 int ret;
209 deb_info("%s:\n", __func__);
210 ret = dvb_attach(mxl5005s_attach, adap->fe, &adap->dev->i2c_adap,
211 &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
212 return ret;
213 }
214
215 static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
216 {
217 int ret;
218 deb_info("%s: onoff:%d\n", __func__, onoff);
219
220 /* InterfaceNumber 1 / AlternateSetting 0 idle
221 InterfaceNumber 1 / AlternateSetting 1 streaming */
222 ret = usb_set_interface(d->udev, 1, onoff);
223 if (ret)
224 err("usb_set_interface failed with error:%d", ret);
225
226 return ret;
227 }
228
229 /* DVB USB Driver stuff */
230 static struct dvb_usb_device_properties ce6230_properties;
231
232 static int ce6230_probe(struct usb_interface *intf,
233 const struct usb_device_id *id)
234 {
235 int ret = 0;
236 struct dvb_usb_device *d = NULL;
237
238 deb_info("%s: interface:%d\n", __func__,
239 intf->cur_altsetting->desc.bInterfaceNumber);
240
241 if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
242 ret = dvb_usb_device_init(intf, &ce6230_properties, THIS_MODULE,
243 &d, adapter_nr);
244 if (ret)
245 err("init failed with error:%d\n", ret);
246 }
247
248 return ret;
249 }
250
251 static struct usb_device_id ce6230_table[] = {
252 { USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500) },
253 { USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310) },
254 { } /* Terminating entry */
255 };
256 MODULE_DEVICE_TABLE(usb, ce6230_table);
257
258 static struct dvb_usb_device_properties ce6230_properties = {
259 .caps = DVB_USB_IS_AN_I2C_ADAPTER,
260
261 .usb_ctrl = DEVICE_SPECIFIC,
262 .no_reconnect = 1,
263
264 .size_of_priv = 0,
265
266 .num_adapters = 1,
267 .adapter = {
268 {
269 .frontend_attach = ce6230_zl10353_frontend_attach,
270 .tuner_attach = ce6230_mxl5003s_tuner_attach,
271 .stream = {
272 .type = USB_BULK,
273 .count = 6,
274 .endpoint = 0x82,
275 .u = {
276 .bulk = {
277 .buffersize = 512,
278 }
279 }
280 },
281 }
282 },
283
284 .power_ctrl = ce6230_power_ctrl,
285
286 .i2c_algo = &ce6230_i2c_algo,
287
288 .num_device_descs = 2,
289 .devices = {
290 {
291 .name = "Intel CE9500 reference design",
292 .cold_ids = {NULL},
293 .warm_ids = {&ce6230_table[0], NULL},
294 },
295 {
296 .name = "AVerMedia A310 USB 2.0 DVB-T tuner",
297 .cold_ids = {NULL},
298 .warm_ids = {&ce6230_table[1], NULL},
299 },
300 }
301 };
302
303 static struct usb_driver ce6230_driver = {
304 .name = "dvb_usb_ce6230",
305 .probe = ce6230_probe,
306 .disconnect = dvb_usb_device_exit,
307 .id_table = ce6230_table,
308 };
309
310 /* module stuff */
311 static int __init ce6230_module_init(void)
312 {
313 int ret;
314 deb_info("%s:\n", __func__);
315 ret = usb_register(&ce6230_driver);
316 if (ret)
317 err("usb_register failed with error:%d", ret);
318
319 return ret;
320 }
321
322 static void __exit ce6230_module_exit(void)
323 {
324 deb_info("%s:\n", __func__);
325 /* deregister this driver from the USB subsystem */
326 usb_deregister(&ce6230_driver);
327 }
328
329 module_init(ce6230_module_init);
330 module_exit(ce6230_module_exit);
331
332 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
333 MODULE_DESCRIPTION("Driver for Intel CE6230 DVB-T USB2.0");
334 MODULE_LICENSE("GPL");
335
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