drivers/media/video/pvrusb2/pvrusb2-hdw.h

   1 /*
   2  *
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   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
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20 #ifndef __PVRUSB2_HDW_H
  21 #define __PVRUSB2_HDW_H
  22
  23 #include <linux/usb.h>
  24 #include <linux/videodev2.h>
  25 #include "pvrusb2-io.h"
  26 #include "pvrusb2-ctrl.h"
  27
  28
  29 /* Private internal control ids, look these up with
  30    pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */
  31 #define PVR2_CID_STDENUM 1
  32 #define PVR2_CID_STDCUR 2
  33 #define PVR2_CID_STDAVAIL 3
  34 #define PVR2_CID_INPUT 4
  35 #define PVR2_CID_AUDIOMODE 5
  36 #define PVR2_CID_FREQUENCY 6
  37 #define PVR2_CID_HRES 7
  38 #define PVR2_CID_VRES 8
  39 #define PVR2_CID_CROPL 9
  40 #define PVR2_CID_CROPT 10
  41 #define PVR2_CID_CROPW 11
  42 #define PVR2_CID_CROPH 12
  43 #define PVR2_CID_CROPCAPPAN 13
  44 #define PVR2_CID_CROPCAPPAD 14
  45 #define PVR2_CID_CROPCAPBL 15
  46 #define PVR2_CID_CROPCAPBT 16
  47 #define PVR2_CID_CROPCAPBW 17
  48 #define PVR2_CID_CROPCAPBH 18
  49
  50 /* Legal values for the INPUT state variable */
  51 #define PVR2_CVAL_INPUT_TV 0
  52 #define PVR2_CVAL_INPUT_DTV 1
  53 #define PVR2_CVAL_INPUT_COMPOSITE 2
  54 #define PVR2_CVAL_INPUT_SVIDEO 3
  55 #define PVR2_CVAL_INPUT_RADIO 4
  56
  57 enum pvr2_config {
  58         pvr2_config_empty,    /* No configuration */
  59         pvr2_config_mpeg,     /* Encoded / compressed video */
  60         pvr2_config_vbi,      /* Standard vbi info */
  61         pvr2_config_pcm,      /* Audio raw pcm stream */
  62         pvr2_config_rawvideo, /* Video raw frames */
  63 };
  64
  65 enum pvr2_v4l_type {
  66         pvr2_v4l_type_video,
  67         pvr2_v4l_type_vbi,
  68         pvr2_v4l_type_radio,
  69 };
  70
  71 /* Major states that we can be in:
  72  *
  73  *  DEAD - Device is in an unusable state and cannot be recovered.  This
  74  *  can happen if we completely lose the ability to communicate with it
  75  *  (but it might still on the bus).  In this state there's nothing we can
  76  *  do; it must be replugged in order to recover.
  77  *
  78  *  COLD - Device is in an unusuable state, needs microcontroller firmware.
  79  *
  80  *  WARM - We can communicate with the device and the proper
  81  *  microcontroller firmware is running, but other device initialization is
  82  *  still needed (e.g. encoder firmware).
  83  *
  84  *  ERROR - A problem prevents capture operation (e.g. encoder firmware
  85  *  missing).
  86  *
  87  *  READY - Device is operational, but not streaming.
  88  *
  89  *  RUN - Device is streaming.
  90  *
  91  */
  92 #define PVR2_STATE_NONE 0
  93 #define PVR2_STATE_DEAD 1
  94 #define PVR2_STATE_COLD 2
  95 #define PVR2_STATE_WARM 3
  96 #define PVR2_STATE_ERROR 4
  97 #define PVR2_STATE_READY 5
  98 #define PVR2_STATE_RUN 6
  99
 100 /* Translate configuration enum to a string label */
 101 const char *pvr2_config_get_name(enum pvr2_config);
 102
 103 struct pvr2_hdw;
 104
 105 /* Create and return a structure for interacting with the underlying
 106    hardware */
 107 struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
 108                                  const struct usb_device_id *devid);
 109
 110 /* Perform second stage initialization, passing in a notification callback
 111    for when the master state changes. */
 112 int pvr2_hdw_initialize(struct pvr2_hdw *,
 113                         void (*callback_func)(void *),
 114                         void *callback_data);
 115
 116 /* Destroy hardware interaction structure */
 117 void pvr2_hdw_destroy(struct pvr2_hdw *);
 118
 119 /* Return true if in the ready (normal) state */
 120 int pvr2_hdw_dev_ok(struct pvr2_hdw *);
 121
 122 /* Return small integer number [1..N] for logical instance number of this
 123    device.  This is useful for indexing array-valued module parameters. */
 124 int pvr2_hdw_get_unit_number(struct pvr2_hdw *);
 125
 126 /* Get pointer to underlying USB device */
 127 struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *);
 128
 129 /* Retrieve serial number of device */
 130 unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
 131
 132 /* Retrieve bus location info of device */
 133 const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
 134
 135 /* Retrieve per-instance string identifier for this specific device */
 136 const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *);
 137
 138 /* Called when hardware has been unplugged */
 139 void pvr2_hdw_disconnect(struct pvr2_hdw *);
 140
 141 /* Get the number of defined controls */
 142 unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *);
 143
 144 /* Retrieve a control handle given its index (0..count-1) */
 145 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *,unsigned int);
 146
 147 /* Retrieve a control handle given its internal ID (if any) */
 148 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *,unsigned int);
 149
 150 /* Retrieve a control handle given its V4L ID (if any) */
 151 struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *,unsigned int ctl_id);
 152
 153 /* Retrieve a control handle given its immediate predecessor V4L ID (if any) */
 154 struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *,
 155                                             unsigned int ctl_id);
 156
 157 /* Commit all control changes made up to this point */
 158 int pvr2_hdw_commit_ctl(struct pvr2_hdw *);
 159
 160 /* Return a bit mask of valid input selections for this device.  Mask bits
 161  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 162 unsigned int pvr2_hdw_get_input_available(struct pvr2_hdw *);
 163
 164 /* Return a bit mask of allowed input selections for this device.  Mask bits
 165  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 166 unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *);
 167
 168 /* Change the set of allowed input selections for this device.  Both
 169    change_mask and change_valu are mask bits according to
 170    PVR_CVAL_INPUT_xxxx definitions.  The change_mask parameter indicate
 171    which settings are being changed and the change_val parameter indicates
 172    whether corresponding settings are being set or cleared. */
 173 int pvr2_hdw_set_input_allowed(struct pvr2_hdw *,
 174                                unsigned int change_mask,
 175                                unsigned int change_val);
 176
 177 /* Return name for this driver instance */
 178 const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *);
 179
 180 /* Mark tuner status stale so that it will be re-fetched */
 181 void pvr2_hdw_execute_tuner_poll(struct pvr2_hdw *);
 182
 183 /* Return information about the tuner */
 184 int pvr2_hdw_get_tuner_status(struct pvr2_hdw *,struct v4l2_tuner *);
 185
 186 /* Return information about cropping capabilities */
 187 int pvr2_hdw_get_cropcap(struct pvr2_hdw *, struct v4l2_cropcap *);
 188
 189 /* Query device and see if it thinks it is on a high-speed USB link */
 190 int pvr2_hdw_is_hsm(struct pvr2_hdw *);
 191
 192 /* Return a string token representative of the hardware type */
 193 const char *pvr2_hdw_get_type(struct pvr2_hdw *);
 194
 195 /* Return a single line description of the hardware type */
 196 const char *pvr2_hdw_get_desc(struct pvr2_hdw *);
 197
 198 /* Turn streaming on/off */
 199 int pvr2_hdw_set_streaming(struct pvr2_hdw *,int);
 200
 201 /* Find out if streaming is on */
 202 int pvr2_hdw_get_streaming(struct pvr2_hdw *);
 203
 204 /* Retrieve driver overall state */
 205 int pvr2_hdw_get_state(struct pvr2_hdw *);
 206
 207 /* Configure the type of stream to generate */
 208 int pvr2_hdw_set_stream_type(struct pvr2_hdw *, enum pvr2_config);
 209
 210 /* Get handle to video output stream */
 211 struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *);
 212
 213 /* Emit a video standard struct */
 214 int pvr2_hdw_get_stdenum_value(struct pvr2_hdw *hdw,struct v4l2_standard *std,
 215                                unsigned int idx);
 216
 217 /* Enable / disable retrieval of CPU firmware or prom contents.  This must
 218    be enabled before pvr2_hdw_cpufw_get() will function.  Note that doing
 219    this may prevent the device from running (and leaving this mode may
 220    imply a device reset). */
 221 void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *,
 222                                 int prom_flag,
 223                                 int enable_flag);
 224
 225 /* Return true if we're in a mode for retrieval CPU firmware */
 226 int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *);
 227
 228 /* Retrieve a piece of the CPU's firmware at the given offset.  Return
 229    value is the number of bytes retrieved or zero if we're past the end or
 230    an error otherwise (e.g. if firmware retrieval is not enabled). */
 231 int pvr2_hdw_cpufw_get(struct pvr2_hdw *,unsigned int offs,
 232                        char *buf,unsigned int cnt);
 233
 234 /* Retrieve a previously stored v4l minor device number */
 235 int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *,enum pvr2_v4l_type index);
 236
 237 /* Store a v4l minor device number */
 238 void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
 239                                      enum pvr2_v4l_type index,int);
 240
 241 /* Direct read/write access to chip's registers:
 242    match - specify criteria to identify target chip (this is a v4l dbg struct)
 243    reg_id  - register number to access
 244    setFl   - true to set the register, false to read it
 245    val_ptr - storage location for source / result. */
 246 int pvr2_hdw_register_access(struct pvr2_hdw *,
 247                              struct v4l2_dbg_match *match, u64 reg_id,
 248                              int setFl, u64 *val_ptr);
 249
 250 /* The following entry points are all lower level things you normally don't
 251    want to worry about. */
 252
 253 /* Issue a command and get a response from the device.  LOTS of higher
 254    level stuff is built on this. */
 255 int pvr2_send_request(struct pvr2_hdw *,
 256                       void *write_ptr,unsigned int write_len,
 257                       void *read_ptr,unsigned int read_len);
 258
 259 /* Slightly higher level device communication functions. */
 260 int pvr2_write_register(struct pvr2_hdw *, u16, u32);
 261
 262 /* Call if for any reason we can't talk to the hardware anymore - this will
 263    cause the driver to stop flailing on the device. */
 264 void pvr2_hdw_render_useless(struct pvr2_hdw *);
 265
 266 /* Set / clear 8051's reset bit */
 267 void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int);
 268
 269 /* Execute a USB-commanded device reset */
 270 void pvr2_hdw_device_reset(struct pvr2_hdw *);
 271
 272 /* Reset worker's error trapping circuit breaker */
 273 int pvr2_hdw_untrip(struct pvr2_hdw *);
 274
 275 /* Execute hard reset command (after this point it's likely that the
 276    encoder will have to be reconfigured).  This also clears the "useless"
 277    state. */
 278 int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *);
 279
 280 /* Execute simple reset command */
 281 int pvr2_hdw_cmd_powerup(struct pvr2_hdw *);
 282
 283 /* suspend */
 284 int pvr2_hdw_cmd_powerdown(struct pvr2_hdw *);
 285
 286 /* Order decoder to reset */
 287 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *);
 288
 289 /* Direct manipulation of GPIO bits */
 290 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *);
 291 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *);
 292 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *);
 293 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val);
 294 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val);
 295
 296 /* This data structure is specifically for the next function... */
 297 struct pvr2_hdw_debug_info {
 298         int big_lock_held;
 299         int ctl_lock_held;
 300         int flag_disconnected;
 301         int flag_init_ok;
 302         int flag_ok;
 303         int fw1_state;
 304         int flag_decoder_missed;
 305         int flag_tripped;
 306         int state_encoder_ok;
 307         int state_encoder_run;
 308         int state_decoder_run;
 309         int state_usbstream_run;
 310         int state_decoder_quiescent;
 311         int state_pipeline_config;
 312         int state_pipeline_req;
 313         int state_pipeline_pause;
 314         int state_pipeline_idle;
 315         int cmd_debug_state;
 316         int cmd_debug_write_len;
 317         int cmd_debug_read_len;
 318         int cmd_debug_write_pend;
 319         int cmd_debug_read_pend;
 320         int cmd_debug_timeout;
 321         int cmd_debug_rstatus;
 322         int cmd_debug_wstatus;
 323         unsigned char cmd_code;
 324 };
 325
 326 /* Non-intrusively retrieve internal state info - this is useful for
 327    diagnosing lockups.  Note that this operation is completed without any
 328    kind of locking and so it is not atomic and may yield inconsistent
 329    results.  This is *purely* a debugging aid. */
 330 void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw,
 331                                       struct pvr2_hdw_debug_info *);
 332
 333 /* Intrusively retrieve internal state info - this is useful for
 334    diagnosing overall driver state.  This operation synchronizes against
 335    the overall driver mutex - so if there are locking problems this will
 336    likely hang!  This is *purely* a debugging aid. */
 337 void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw,
 338                                     struct pvr2_hdw_debug_info *);
 339
 340 /* Report out several lines of text that describes driver internal state.
 341    Results are written into the passed-in buffer. */
 342 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
 343                                    char *buf_ptr,unsigned int buf_size);
 344
 345 /* Cause modules to log their state once */
 346 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw);
 347
 348 /* Cause encoder firmware to be uploaded into the device.  This is normally
 349    done autonomously, but the interface is exported here because it is also
 350    a debugging aid. */
 351 int pvr2_upload_firmware2(struct pvr2_hdw *hdw);
 352
 353 #endif /* __PVRUSB2_HDW_H */
 354
 355 /*
 356   Stuff for Emacs to see, in order to encourage consistent editing style:
 357   *** Local Variables: ***
 358   *** mode: c ***
 359   *** fill-column: 75 ***
 360   *** tab-width: 8 ***
 361   *** c-basic-offset: 8 ***
 362   *** End: ***
 363   */