aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/dvb/dvb-usb/dvb-usb.h
blob: 2d5352e54dc018d05959ab9d83f5634e126d2b83 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
/* dvb-usb.h is part of the DVB USB library.
 *
 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
 * see dvb-usb-init.c for copyright information.
 *
 * the headerfile, all dvb-usb-drivers have to include.
 *
 * TODO: clean-up the structures for unused fields and update the comments
 */
#ifndef __DVB_USB_H__
#define __DVB_USB_H__

#include <linux/input.h>
#include <linux/usb.h>
#include <linux/firmware.h>
#include <linux/mutex.h>

#include "dvb_frontend.h"
#include "dvb_demux.h"
#include "dvb_net.h"
#include "dmxdev.h"

#include "dvb-pll.h"

#include "dvb-usb-ids.h"

/* debug */
#ifdef CONFIG_DVB_USB_DEBUG
#define dprintk(var,level,args...) \
	    do { if ((var & level)) { printk(args); } } while (0)

#define debug_dump(b,l,func) {\
	int loop_; \
	for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
	func("\n");\
}
#define DVB_USB_DEBUG_STATUS
#else
#define dprintk(args...)
#define debug_dump(b,l,func)

#define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"

#endif

/* generic log methods - taken from usb.h */
#ifndef DVB_USB_LOG_PREFIX
 #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
#endif

#undef err
#define err(format, arg...)  printk(KERN_ERR     DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
#undef info
#define info(format, arg...) printk(KERN_INFO    DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
#undef warn
#define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)

/**
 * struct dvb_usb_device_description - name and its according USB IDs
 * @name: real name of the box, regardless which DVB USB device class is in use
 * @cold_ids: array of struct usb_device_id which describe the device in
 *  pre-firmware state
 * @warm_ids: array of struct usb_device_id which describe the device in
 *  post-firmware state
 *
 * Each DVB USB device class can have one or more actual devices, this struct
 * assigns a name to it.
 */
struct dvb_usb_device_description {
	const char *name;

#define DVB_USB_ID_MAX_NUM 15
	struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
	struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
};

/**
 * struct dvb_usb_rc_key - a remote control key and its input-event
 * @custom: the vendor/custom part of the key
 * @data: the actual key part
 * @event: the input event assigned to key identified by custom and data
 */
struct dvb_usb_rc_key {
	u8 custom,data;
	u32 event;
};

struct dvb_usb_device;
struct dvb_usb_adapter;
struct usb_data_stream;

/**
 * Properties of USB streaming - TODO this structure should be somewhere else
 * describes the kind of USB transfer used for data-streaming.
 *  (BULK or ISOC)
 */
struct usb_data_stream_properties {
#define USB_BULK  1
#define USB_ISOC  2
	int type;
	int count;
	int endpoint;

	union {
		struct {
			int buffersize; /* per URB */
		} bulk;
		struct {
			int framesperurb;
			int framesize;
			int interval;
		} isoc;
	} u;
};

/**
 * struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter.
 *    A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device.
 * @caps: capabilities of the DVB USB device.
 * @pid_filter_count: number of PID filter position in the optional hardware
 *  PID-filter.
 * @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the
 *  device (not URB submitting/killing).
 * @pid_filter_ctrl: called to en/disable the PID filter, if any.
 * @pid_filter: called to set/unset a PID for filtering.
 * @frontend_attach: called to attach the possible frontends (fill fe-field
 *  of struct dvb_usb_device).
 * @tuner_attach: called to attach the correct tuner and to fill pll_addr,
 *  pll_desc and pll_init_buf of struct dvb_usb_device).
 * @stream: configuration of the USB streaming
 */
struct dvb_usb_adapter_properties {
#define DVB_USB_ADAP_HAS_PID_FILTER               0x01
#define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
#define DVB_USB_ADAP_NEED_PID_FILTERING           0x04
#define DVB_USB_ADAP_RECEIVES_204_BYTE_TS         0x08
	int caps;
	int pid_filter_count;

	int (*streaming_ctrl)  (struct dvb_usb_adapter *, int);
	int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
	int (*pid_filter)      (struct dvb_usb_adapter *, int, u16, int);

	int (*frontend_attach) (struct dvb_usb_adapter *);
	int (*tuner_attach)    (struct dvb_usb_adapter *);

	struct usb_data_stream_properties stream;

	int size_of_priv;
};

/**
 * struct dvb_usb_device_properties - properties of a dvb-usb-device
 * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
 *  download.
 * @firmware: name of the firmware file.
 * @download_firmware: called to download the firmware when the usb_ctrl is
 *  DEVICE_SPECIFIC.
 * @no_reconnect: device doesn't do a reconnect after downloading the firmware,
 *  so do the warm initialization right after it
 *
 * @size_of_priv: how many bytes shall be allocated for the private field
 *  of struct dvb_usb_device.
 *
 * @power_ctrl: called to enable/disable power of the device.
 * @read_mac_address: called to read the MAC address of the device.
 * @identify_state: called to determine the state (cold or warm), when it
 *  is not distinguishable by the USB IDs.
 *
 * @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
 *  remote control handling).
 * @rc_key_map_size: number of items in @rc_key_map.
 * @rc_query: called to query an event event.
 * @rc_interval: time in ms between two queries.
 *
 * @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
 *
 * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
 *  endpoint which received control messages with bulk transfers. When this
 *  is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
 *  helper functions.
 *
 * @num_device_descs: number of struct dvb_usb_device_description in @devices
 * @devices: array of struct dvb_usb_device_description compatibles with these
 *  properties.
 */
#define MAX_NO_OF_ADAPTER_PER_DEVICE 2
struct dvb_usb_device_properties {

#define DVB_USB_IS_AN_I2C_ADAPTER            0x01
	int caps;

#define DEVICE_SPECIFIC 0
#define CYPRESS_AN2135  1
#define CYPRESS_AN2235  2
#define CYPRESS_FX2     3
	int        usb_ctrl;
	int        (*download_firmware) (struct usb_device *, const struct firmware *);
	const char firmware[FIRMWARE_NAME_MAX];
	int        no_reconnect;

	int size_of_priv;

	int num_adapters;
	struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];

	int (*power_ctrl)       (struct dvb_usb_device *, int);
	int (*read_mac_address) (struct dvb_usb_device *, u8 []);
	int (*identify_state)   (struct usb_device *, struct dvb_usb_device_properties *,
			struct dvb_usb_device_description **, int *);

/* remote control properties */
#define REMOTE_NO_KEY_PRESSED      0x00
#define REMOTE_KEY_PRESSED         0x01
#define REMOTE_KEY_REPEAT          0x02
	struct dvb_usb_rc_key  *rc_key_map;
	int rc_key_map_size;
	int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
	int rc_interval;

	struct i2c_algorithm *i2c_algo;

	int generic_bulk_ctrl_endpoint;

	int num_device_descs;
	struct dvb_usb_device_description devices[11];
};

/**
 * struct usb_data_stream - generic object of an USB stream
 * @buf_num: number of buffer allocated.
 * @buf_size: size of each buffer in buf_list.
 * @buf_list: array containing all allocate buffers for streaming.
 * @dma_addr: list of dma_addr_t for each buffer in buf_list.
 *
 * @urbs_initialized: number of URBs initialized.
 * @urbs_submitted: number of URBs submitted.
 */
#define MAX_NO_URBS_FOR_DATA_STREAM 10
struct usb_data_stream {
	struct usb_device                 *udev;
	struct usb_data_stream_properties  props;

#define USB_STATE_INIT    0x00
#define USB_STATE_URB_BUF 0x01
	int state;

	void (*complete) (struct usb_data_stream *, u8 *, size_t);

	struct urb    *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
	int            buf_num;
	unsigned long  buf_size;
	u8            *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
	dma_addr_t     dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];

	int urbs_initialized;
	int urbs_submitted;

	void *user_priv;
};

/**
 * struct dvb_usb_adapter - a DVB adapter on a USB device
 * @id: index of this adapter (starting with 0).
 *
 * @feedcount: number of reqested feeds (used for streaming-activation)
 * @pid_filtering: is hardware pid_filtering used or not.
 *
 * @pll_addr: I2C address of the tuner for programming
 * @pll_init: array containing the initialization buffer
 * @pll_desc: pointer to the appropriate struct dvb_pll_desc
 * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
 *
 * @dvb_adap: device's dvb_adapter.
 * @dmxdev: device's dmxdev.
 * @demux: device's software demuxer.
 * @dvb_net: device's dvb_net interfaces.
 * @dvb_frontend: device's frontend.
 * @max_feed_count: how many feeds can be handled simultaneously by this
 *  device
 *
 * @fe_init:  rerouted frontend-init (wakeup) function.
 * @fe_sleep: rerouted frontend-sleep function.
 *
 * @stream: the usb data stream.
 */
struct dvb_usb_adapter {
	struct dvb_usb_device *dev;
	struct dvb_usb_adapter_properties props;

#define DVB_USB_ADAP_STATE_INIT 0x000
#define DVB_USB_ADAP_STATE_DVB  0x001
	int state;

	u8  id;

	int feedcount;
	int pid_filtering;

	/* dvb */
	struct dvb_adapter   dvb_adap;
	struct dmxdev        dmxdev;
	struct dvb_demux     demux;
	struct dvb_net       dvb_net;
	struct dvb_frontend *fe;
	int                  max_feed_count;

	int (*fe_init)  (struct dvb_frontend *);
	int (*fe_sleep) (struct dvb_frontend *);

	struct usb_data_stream stream;

	void *priv;
};

/**
 * struct dvb_usb_device - object of a DVB USB device
 * @props: copy of the struct dvb_usb_properties this device belongs to.
 * @desc: pointer to the device's struct dvb_usb_device_description.
 * @state: initialization and runtime state of the device.
 *
 * @powered: indicated whether the device is power or not.
 *  Powered is in/decremented for each call to modify the state.
 * @udev: pointer to the device's struct usb_device.
 *
 * @usb_mutex: semaphore of USB control messages (reading needs two messages)
 * @i2c_mutex: semaphore for i2c-transfers
 *
 * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
 *
 * @rc_input_dev: input device for the remote control.
 * @rc_query_work: struct work_struct frequent rc queries
 * @last_event: last triggered event
 * @last_state: last state (no, pressed, repeat)
 * @owner: owner of the dvb_adapter
 * @priv: private data of the actual driver (allocate by dvb-usb, size defined
 *  in size_of_priv of dvb_usb_properties).
 */
struct dvb_usb_device {
	struct dvb_usb_device_properties props;
	struct dvb_usb_device_description *desc;

	struct usb_device *udev;

#define DVB_USB_STATE_INIT        0x000
#define DVB_USB_STATE_I2C         0x001
#define DVB_USB_STATE_DVB         0x002
#define DVB_USB_STATE_REMOTE      0x004
	int state;

	int powered;

	/* locking */
	struct mutex usb_mutex;

	/* i2c */
	struct mutex i2c_mutex;
	struct i2c_adapter i2c_adap;

	int                    num_adapters_initialized;
	struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];

	/* remote control */
	struct input_dev *rc_input_dev;
	char rc_phys[64];
	struct delayed_work rc_query_work;
	u32 last_event;
	int last_state;

	struct module *owner;

	void *priv;
};

extern int dvb_usb_device_init(struct usb_interface *,
			       struct dvb_usb_device_properties *,
			       struct module *, struct dvb_usb_device **,
			       short *adapter_nums);
extern void dvb_usb_device_exit(struct usb_interface *);

/* the generic read/write method for device control */
extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);

/* commonly used remote control parsing */
extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);

/* commonly used firmware download types and function */
struct hexline {
	u8 len;
	u32 addr;
	u8 type;
	u8 data[255];
	u8 chk;
};
extern int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type);
extern int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos);


#endif