Pull pvops into release branch
[linux-2.6] / drivers / media / dvb / dvb-usb / ce6230.c
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         { } /* Terminating entry */
254 };
255 MODULE_DEVICE_TABLE(usb, ce6230_table);
256
257 static struct dvb_usb_device_properties ce6230_properties = {
258         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
259
260         .usb_ctrl = DEVICE_SPECIFIC,
261         .no_reconnect = 1,
262
263         .size_of_priv = 0,
264
265         .num_adapters = 1,
266         .adapter = {
267                 {
268                         .frontend_attach  = ce6230_zl10353_frontend_attach,
269                         .tuner_attach     = ce6230_mxl5003s_tuner_attach,
270                         .stream = {
271                                 .type = USB_BULK,
272                                 .count = 6,
273                                 .endpoint = 0x82,
274                                 .u = {
275                                         .bulk = {
276                                                 .buffersize = 512,
277                                         }
278                                 }
279                         },
280                 }
281         },
282
283         .power_ctrl = ce6230_power_ctrl,
284
285         .i2c_algo = &ce6230_i2c_algo,
286
287         .num_device_descs = 1,
288         .devices = {
289                 {
290                         .name = "Intel CE9500 reference design",
291                         .cold_ids = {NULL},
292                         .warm_ids = {&ce6230_table[0], NULL},
293                 },
294         }
295 };
296
297 static struct usb_driver ce6230_driver = {
298         .name       = "dvb_usb_ce6230",
299         .probe      = ce6230_probe,
300         .disconnect = dvb_usb_device_exit,
301         .id_table   = ce6230_table,
302 };
303
304 /* module stuff */
305 static int __init ce6230_module_init(void)
306 {
307         int ret;
308         deb_info("%s:\n", __func__);
309         ret = usb_register(&ce6230_driver);
310         if (ret)
311                 err("usb_register failed with error:%d", ret);
312
313         return ret;
314 }
315
316 static void __exit ce6230_module_exit(void)
317 {
318         deb_info("%s:\n", __func__);
319         /* deregister this driver from the USB subsystem */
320         usb_deregister(&ce6230_driver);
321 }
322
323 module_init(ce6230_module_init);
324 module_exit(ce6230_module_exit);
325
326 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
327 MODULE_DESCRIPTION("Driver for Intel CE6230 DVB-T USB2.0");
328 MODULE_LICENSE("GPL");