drivers/media/dvb/dvb-usb/dvb-usb.h

   1 /* dvb-usb.h is part of the DVB USB library.
   2  *
   3  * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
   4  * see dvb-usb-init.c for copyright information.
   5  *
   6  * the headerfile, all dvb-usb-drivers have to include.
   7  */
   8 #ifndef __DVB_USB_H__
   9 #define __DVB_USB_H__
  10
  11 #include <linux/config.h>
  12 #include <linux/input.h>
  13 #include <linux/module.h>
  14 #include <linux/usb.h>
  15
  16 #include "dvb_frontend.h"
  17 #include "dvb_demux.h"
  18 #include "dvb_net.h"
  19 #include "dmxdev.h"
  20
  21 #include "dvb-pll.h"
  22
  23 #include "dvb-usb-ids.h"
  24
  25 /* debug */
  26 #ifdef CONFIG_DVB_USB_DEBUG
  27 #define dprintk(var,level,args...) \
  28             do { if ((var & level)) { printk(args); } } while (0)
  29
  30 #define debug_dump(b,l,func) {\
  31         int loop_; \
  32         for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
  33         func("\n");\
  34 }
  35 #define DVB_USB_DEBUG_STATUS
  36 #else
  37 #define dprintk(args...)
  38 #define debug_dump(b,l,func)
  39
  40 #define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"
  41
  42 #endif
  43
  44 /* generic log methods - taken from usb.h */
  45 #ifndef DVB_USB_LOG_PREFIX
  46  #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
  47 #endif
  48
  49 #undef err
  50 #define err(format, arg...)  printk(KERN_ERR     DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  51 #undef info
  52 #define info(format, arg...) printk(KERN_INFO    DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  53 #undef warn
  54 #define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  55
  56 /**
  57  * struct dvb_usb_device_description - name and its according USB IDs
  58  * @name: real name of the box, regardless which DVB USB device class is in use
  59  * @cold_ids: array of struct usb_device_id which describe the device in
  60  *  pre-firmware state
  61  * @warm_ids: array of struct usb_device_id which describe the device in
  62  *  post-firmware state
  63  *
  64  * Each DVB USB device class can have one or more actual devices, this struct
  65  * assigns a name to it.
  66  */
  67 struct dvb_usb_device_description {
  68         const char *name;
  69
  70 #define DVB_USB_ID_MAX_NUM 15
  71         struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
  72         struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
  73 };
  74
  75 /**
  76  * struct dvb_usb_rc_key - a remote control key and its input-event
  77  * @custom: the vendor/custom part of the key
  78  * @data: the actual key part
  79  * @event: the input event assigned to key identified by custom and data
  80  */
  81 struct dvb_usb_rc_key {
  82         u8 custom,data;
  83         u32 event;
  84 };
  85
  86 struct dvb_usb_device;
  87
  88 /**
  89  * struct dvb_usb_properties - properties of a dvb-usb-device
  90  * @caps: capabilites of the DVB USB device.
  91  * @pid_filter_count: number of PID filter position in the optional hardware
  92  *  PID-filter.
  93  *
  94  * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
  95  *  download.
  96  * @firmware: name of the firmware file.
  97  *
  98  * @size_of_priv: how many bytes shall be allocated for the private field
  99  *  of struct dvb_usb_device.
 100  *
 101  * @power_ctrl: called to enable/disable power of the device.
 102  * @streaming_crtl: called to start and stop the MPEG2-TS streaming of the
 103  *  device (not URB submitting/killing).
 104  * @pid_filter_ctrl: called to en/disable the PID filter, if any.
 105  * @pid_filter: called to set/unset a PID for filtering.
 106  *
 107  * @read_mac_address: called to read the MAC address of the device.
 108  *
 109  * @frontend_attach: called to attach the possible frontends (fill fe-field
 110  *  of struct dvb_usb_device).
 111  * @tuner_attach: called to attach the correct tuner and to fill pll_addr,
 112  *  pll_desc and pll_init_buf of struct dvb_usb_device).
 113  * @identify_state: called to determine the state (cold or warm), when it
 114  *  is not distinguishable by the USB IDs.
 115  *
 116  * @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
 117  *  remote control handling).
 118  * @rc_key_map_size: number of items in @rc_key_map.
 119  * @rc_query: called to query an event event.
 120  * @rc_interval: time in ms between two queries.
 121  *
 122  * @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
 123  *
 124  * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
 125  *  endpoint which received control messages with bulk transfers. When this
 126  *  is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
 127  *  helper functions.
 128  *
 129  * @urb: describes the kind of USB transfer used for MPEG2-TS-streaming.
 130  *  Currently only BULK is implemented
 131  *
 132  * @num_device_descs: number of struct dvb_usb_device_description in @devices
 133  * @devices: array of struct dvb_usb_device_description compatibles with these
 134  *  properties.
 135  */
 136 struct dvb_usb_properties {
 137
 138 #define DVB_USB_HAS_PID_FILTER               0x01
 139 #define DVB_USB_PID_FILTER_CAN_BE_TURNED_OFF 0x02
 140 #define DVB_USB_NEED_PID_FILTERING           0x04
 141 #define DVB_USB_IS_AN_I2C_ADAPTER            0x08
 142         int caps;
 143         int pid_filter_count;
 144
 145 #define CYPRESS_AN2135  0
 146 #define CYPRESS_AN2235  1
 147 #define CYPRESS_FX2     2
 148         int usb_ctrl;
 149         const char *firmware;
 150
 151         int size_of_priv;
 152
 153         int (*power_ctrl) (struct dvb_usb_device *, int);
 154         int (*streaming_ctrl) (struct dvb_usb_device *, int);
 155         int (*pid_filter_ctrl) (struct dvb_usb_device *, int);
 156         int (*pid_filter) (struct dvb_usb_device *, int, u16, int);
 157
 158         int (*read_mac_address) (struct dvb_usb_device *, u8 []);
 159         int (*frontend_attach) (struct dvb_usb_device *);
 160         int (*tuner_attach) (struct dvb_usb_device *);
 161
 162         int (*identify_state) (struct usb_device *, struct dvb_usb_properties *,
 163                         struct dvb_usb_device_description **, int *);
 164
 165 /* remote control properties */
 166 #define REMOTE_NO_KEY_PRESSED      0x00
 167 #define REMOTE_KEY_PRESSED         0x01
 168 #define REMOTE_KEY_REPEAT          0x02
 169         struct dvb_usb_rc_key *rc_key_map;
 170         int rc_key_map_size;
 171         int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
 172         int rc_interval;
 173
 174         struct i2c_algorithm *i2c_algo;
 175
 176         int generic_bulk_ctrl_endpoint;
 177
 178         struct {
 179 #define DVB_USB_BULK  1
 180 #define DVB_USB_ISOC  2
 181                 int type;
 182                 int count;
 183                 int endpoint;
 184
 185                 union {
 186                         struct {
 187                                 int buffersize; /* per URB */
 188                         } bulk;
 189                         struct {
 190                                 int framesperurb;
 191                                 int framesize;
 192                         } isoc;
 193                 } u;
 194         } urb;
 195
 196         int num_device_descs;
 197         struct dvb_usb_device_description devices[8];
 198 };
 199
 200
 201 /**
 202  * struct dvb_usb_device - object of a DVB USB device
 203  * @props: copy of the struct dvb_usb_properties this device belongs to.
 204  * @desc: pointer to the device's struct dvb_usb_device_description.
 205  * @state: initialization and runtime state of the device.
 206  *
 207  * @udev: pointer to the device's struct usb_device.
 208  * @urb_list: array of dynamically allocated struct urb for the MPEG2-TS-
 209  *  streaming.
 210  * @buffer: buffer used to streaming.
 211  * @dma_handle: dma_addr_t for buffer.
 212  * @urbs_initialized: number of URBs initialized.
 213  * @urbs_submitted: number of URBs submitted.
 214  * @feedcount: number of reqested feeds (used for streaming-activation)
 215  * @pid_filtering: is hardware pid_filtering used or not.
 216  * @usb_sem: semaphore of USB control messages (reading needs two messages)
 217  * @i2c_sem: semaphore for i2c-transfers
 218  * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
 219  * @pll_addr: I2C address of the tuner for programming
 220  * @pll_init: array containing the initialization buffer
 221  * @pll_desc: pointer to the appropriate struct dvb_pll_desc
 222  * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod
 223  * @dvb_adap: device's dvb_adapter.
 224  * @dmxdev: device's dmxdev.
 225  * @demux: device's software demuxer.
 226  * @dvb_net: device's dvb_net interfaces.
 227  * @dvb_frontend: device's frontend.
 228  * @max_feed_count: how many feeds can be handled simultaneously by this
 229  *  device
 230  * @fe_sleep: rerouted frontend-sleep function.
 231  * @fe_init: rerouted frontend-init (wakeup) function.
 232  * @rc_input_dev: input device for the remote control.
 233  * @rc_query_work: struct work_struct frequent rc queries
 234  * @last_event: last triggered event
 235  * @last_state: last state (no, pressed, repeat)
 236  * @owner: owner of the dvb_adapter
 237  * @priv: private data of the actual driver (allocate by dvb-usb, size defined
 238  *  in size_of_priv of dvb_usb_properties).
 239  */
 240 struct dvb_usb_device {
 241         struct dvb_usb_properties props;
 242         struct dvb_usb_device_description *desc;
 243
 244 #define DVB_USB_STATE_INIT        0x000
 245 #define DVB_USB_STATE_URB_LIST    0x001
 246 #define DVB_USB_STATE_URB_BUF     0x002
 247 #define DVB_USB_STATE_DVB         0x004
 248 #define DVB_USB_STATE_I2C         0x008
 249 #define DVB_USB_STATE_REMOTE      0x010
 250 #define DVB_USB_STATE_URB_SUBMIT  0x020
 251         int state;
 252
 253         /* usb */
 254         struct usb_device *udev;
 255         struct urb **urb_list;
 256         u8 *buffer;
 257         dma_addr_t dma_handle;
 258         int urbs_initialized;
 259         int urbs_submitted;
 260
 261         int feedcount;
 262         int pid_filtering;
 263
 264         /* locking */
 265         struct semaphore usb_sem;
 266
 267         /* i2c */
 268         struct semaphore i2c_sem;
 269         struct i2c_adapter i2c_adap;
 270
 271         /* tuner programming information */
 272         u8 pll_addr;
 273         u8 pll_init[4];
 274         struct dvb_pll_desc *pll_desc;
 275         int (*tuner_pass_ctrl)(struct dvb_frontend *, int, u8);
 276
 277         /* dvb */
 278         struct dvb_adapter dvb_adap;
 279         struct dmxdev dmxdev;
 280         struct dvb_demux demux;
 281         struct dvb_net dvb_net;
 282         struct dvb_frontend* fe;
 283         int max_feed_count;
 284
 285         int (*fe_sleep) (struct dvb_frontend *);
 286         int (*fe_init)  (struct dvb_frontend *);
 287
 288         /* remote control */
 289         struct input_dev rc_input_dev;
 290         struct work_struct rc_query_work;
 291         u32 last_event;
 292         int last_state;
 293
 294         struct module *owner;
 295
 296         void *priv;
 297 };
 298
 299 extern int dvb_usb_device_init(struct usb_interface *, struct dvb_usb_properties *, struct module *);
 300 extern void dvb_usb_device_exit(struct usb_interface *);
 301
 302 /* the generic read/write method for device control */
 303 extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
 304 extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
 305
 306 /* commonly used remote control parsing */
 307 extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
 308
 309 /* commonly used pll init and set functions */
 310 extern int dvb_usb_pll_init_i2c(struct dvb_frontend *);
 311 extern int dvb_usb_pll_set(struct dvb_frontend *, struct dvb_frontend_parameters *, u8[]);
 312 extern int dvb_usb_pll_set_i2c(struct dvb_frontend *, struct dvb_frontend_parameters *);
 313
 314
 315 #endif