Merge master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / drivers / media / dvb / dvb-usb / digitv.c
1 /* DVB USB compliant linux driver for Nebula Electronics uDigiTV DVB-T USB2.0
2  * receiver
3  *
4  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@desy.de)
5  *
6  * partly based on the SDK published by Nebula Electronics
7  *
8  *      This program is free software; you can redistribute it and/or modify it
9  *      under the terms of the GNU General Public License as published by the Free
10  *      Software Foundation, version 2.
11  *
12  * see Documentation/dvb/README.dvb-usb for more information
13  */
14 #include "digitv.h"
15
16 #include "mt352.h"
17 #include "nxt6000.h"
18
19 /* debug */
20 int dvb_usb_digitv_debug;
21 module_param_named(debug,dvb_usb_digitv_debug, int, 0644);
22 MODULE_PARM_DESC(debug, "set debugging level (1=rc (or-able))." DVB_USB_DEBUG_STATUS);
23
24 static int digitv_ctrl_msg(struct dvb_usb_device *d,
25                 u8 cmd, u8 vv, u8 *wbuf, int wlen, u8 *rbuf, int rlen)
26 {
27         int wo = (rbuf == NULL || rlen == 0); /* write-only */
28         u8 sndbuf[7],rcvbuf[7];
29         memset(sndbuf,0,7); memset(rcvbuf,0,7);
30
31         sndbuf[0] = cmd;
32         sndbuf[1] = vv;
33         sndbuf[2] = wo ? wlen : rlen;
34
35         if (wo) {
36                 memcpy(&sndbuf[3],wbuf,wlen);
37                 dvb_usb_generic_write(d,sndbuf,7);
38         } else {
39                 dvb_usb_generic_rw(d,sndbuf,7,rcvbuf,7,10);
40                 memcpy(rbuf,&rcvbuf[3],rlen);
41         }
42         return 0;
43 }
44
45 /* I2C */
46 static int digitv_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msg[],int num)
47 {
48         struct dvb_usb_device *d = i2c_get_adapdata(adap);
49         int i;
50
51         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
52                 return -EAGAIN;
53
54         if (num > 2)
55                 warn("more than 2 i2c messages at a time is not handled yet. TODO.");
56
57         for (i = 0; i < num; i++) {
58                 /* write/read request */
59                 if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) {
60                         if (digitv_ctrl_msg(d, USB_READ_COFDM, msg[i].buf[0], NULL, 0,
61                                                 msg[i+1].buf,msg[i+1].len) < 0)
62                                 break;
63                         i++;
64                 } else
65                         if (digitv_ctrl_msg(d,USB_WRITE_COFDM, msg[i].buf[0],
66                                                 &msg[i].buf[1],msg[i].len-1,NULL,0) < 0)
67                                 break;
68         }
69
70         mutex_unlock(&d->i2c_mutex);
71         return i;
72 }
73
74 static u32 digitv_i2c_func(struct i2c_adapter *adapter)
75 {
76         return I2C_FUNC_I2C;
77 }
78
79 static struct i2c_algorithm digitv_i2c_algo = {
80         .master_xfer   = digitv_i2c_xfer,
81         .functionality = digitv_i2c_func,
82 };
83
84 /* Callbacks for DVB USB */
85 static int digitv_identify_state (struct usb_device *udev, struct
86                 dvb_usb_properties *props, struct dvb_usb_device_description **desc,
87                 int *cold)
88 {
89         *cold = udev->descriptor.iManufacturer == 0 && udev->descriptor.iProduct == 0;
90         return 0;
91 }
92
93 static int digitv_mt352_demod_init(struct dvb_frontend *fe)
94 {
95         static u8 reset_buf[] = { 0x89, 0x38,  0x8a, 0x2d, 0x50, 0x80 };
96         static u8 init_buf[] = { 0x68, 0xa0,  0x8e, 0x40,  0x53, 0x50,
97                         0x67, 0x20,  0x7d, 0x01,  0x7c, 0x00,  0x7a, 0x00,
98                         0x79, 0x20,  0x57, 0x05,  0x56, 0x31,  0x88, 0x0f,
99                         0x75, 0x32 };
100         int i;
101
102         for (i = 0; i < ARRAY_SIZE(reset_buf); i += 2)
103                 mt352_write(fe, &reset_buf[i], 2);
104
105         msleep(1);
106
107         for (i = 0; i < ARRAY_SIZE(init_buf); i += 2)
108                 mt352_write(fe, &init_buf[i], 2);
109
110         return 0;
111 }
112
113 static struct mt352_config digitv_mt352_config = {
114         .demod_init = digitv_mt352_demod_init,
115 };
116
117 static int digitv_nxt6000_tuner_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
118 {
119         struct dvb_usb_device *d = fe->dvb->priv;
120         u8 b[5];
121         dvb_usb_tuner_calc_regs(fe,fep,b, 5);
122         return digitv_ctrl_msg(d,USB_WRITE_TUNER,0,&b[1],4,NULL,0);
123 }
124
125 static struct nxt6000_config digitv_nxt6000_config = {
126         .clock_inversion = 1,
127 };
128
129 static int digitv_frontend_attach(struct dvb_usb_device *d)
130 {
131         if ((d->fe = mt352_attach(&digitv_mt352_config, &d->i2c_adap)) != NULL) {
132                 d->fe->ops.tuner_ops.calc_regs = dvb_usb_tuner_calc_regs;
133                 return 0;
134         }
135         if ((d->fe = nxt6000_attach(&digitv_nxt6000_config, &d->i2c_adap)) != NULL) {
136                 d->fe->ops.tuner_ops.set_params = digitv_nxt6000_tuner_set_params;
137                 return 0;
138         }
139         return -EIO;
140 }
141
142 static int digitv_tuner_attach(struct dvb_usb_device *d)
143 {
144         d->pll_addr = 0x60;
145         d->pll_desc = &dvb_pll_tded4;
146         return 0;
147 }
148
149 static struct dvb_usb_rc_key digitv_rc_keys[] = {
150         { 0x00, 0x16, KEY_POWER }, /* dummy key */
151 };
152
153 /* TODO is it really the NEC protocol ? */
154 static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
155 {
156         u8 key[5];
157
158         digitv_ctrl_msg(d,USB_READ_REMOTE,0,NULL,0,&key[1],4);
159         /* TODO state, maybe it is VV ? */
160         if (key[1] != 0)
161                 key[0] = 0x01; /* if something is inside the buffer, simulate key press */
162
163         /* call the universal NEC remote processor, to find out the key's state and event */
164         dvb_usb_nec_rc_key_to_event(d,key,event,state);
165         if (key[0] != 0)
166                 deb_rc("key: %x %x %x %x %x\n",key[0],key[1],key[2],key[3],key[4]);
167         return 0;
168 }
169
170 /* DVB USB Driver stuff */
171 static struct dvb_usb_properties digitv_properties;
172
173 static int digitv_probe(struct usb_interface *intf,
174                 const struct usb_device_id *id)
175 {
176         struct dvb_usb_device *d;
177         int ret;
178         if ((ret = dvb_usb_device_init(intf,&digitv_properties,THIS_MODULE,&d)) == 0) {
179                 u8 b[4] = { 0 };
180
181                 if (d != NULL) { /* do that only when the firmware is loaded */
182                         b[0] = 1;
183                         digitv_ctrl_msg(d,USB_WRITE_REMOTE_TYPE,0,b,4,NULL,0);
184
185                         b[0] = 0;
186                         digitv_ctrl_msg(d,USB_WRITE_REMOTE,0,b,4,NULL,0);
187                 }
188         }
189         return ret;
190 }
191
192 static struct usb_device_id digitv_table [] = {
193                 { USB_DEVICE(USB_VID_ANCHOR, USB_PID_NEBULA_DIGITV) },
194                 { }             /* Terminating entry */
195 };
196 MODULE_DEVICE_TABLE (usb, digitv_table);
197
198 static struct dvb_usb_properties digitv_properties = {
199         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
200
201         .usb_ctrl = CYPRESS_FX2,
202         .firmware = "dvb-usb-digitv-02.fw",
203
204         .size_of_priv     = 0,
205
206         .frontend_attach  = digitv_frontend_attach,
207         .tuner_attach     = digitv_tuner_attach,
208
209         .rc_interval      = 1000,
210         .rc_key_map       = digitv_rc_keys,
211         .rc_key_map_size  = ARRAY_SIZE(digitv_rc_keys),
212         .rc_query         = digitv_rc_query,
213
214         .identify_state   = digitv_identify_state,
215
216         .i2c_algo         = &digitv_i2c_algo,
217
218         .generic_bulk_ctrl_endpoint = 0x01,
219         /* parameter for the MPEG2-data transfer */
220         .urb = {
221                 .type = DVB_USB_BULK,
222                 .count = 7,
223                 .endpoint = 0x02,
224                 .u = {
225                         .bulk = {
226                                 .buffersize = 4096,
227                         }
228                 }
229         },
230
231         .num_device_descs = 1,
232         .devices = {
233                 {   "Nebula Electronics uDigiTV DVB-T USB2.0)",
234                         { &digitv_table[0], NULL },
235                         { NULL },
236                 },
237                 { NULL },
238         }
239 };
240
241 static struct usb_driver digitv_driver = {
242         .name           = "dvb_usb_digitv",
243         .probe          = digitv_probe,
244         .disconnect = dvb_usb_device_exit,
245         .id_table       = digitv_table,
246 };
247
248 /* module stuff */
249 static int __init digitv_module_init(void)
250 {
251         int result;
252         if ((result = usb_register(&digitv_driver))) {
253                 err("usb_register failed. Error number %d",result);
254                 return result;
255         }
256
257         return 0;
258 }
259
260 static void __exit digitv_module_exit(void)
261 {
262         /* deregister this driver from the USB subsystem */
263         usb_deregister(&digitv_driver);
264 }
265
266 module_init (digitv_module_init);
267 module_exit (digitv_module_exit);
268
269 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
270 MODULE_DESCRIPTION("Driver for Nebula Electronics uDigiTV DVB-T USB2.0");
271 MODULE_VERSION("1.0-alpha");
272 MODULE_LICENSE("GPL");