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 unusable 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 /* Get the detected video standard */
 218 int pvr2_hdw_get_detected_std(struct pvr2_hdw *hdw, v4l2_std_id *std);
 219
 220 /* Enable / disable retrieval of CPU firmware or prom contents.  This must
 221    be enabled before pvr2_hdw_cpufw_get() will function.  Note that doing
 222    this may prevent the device from running (and leaving this mode may
 223    imply a device reset). */
 224 void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *,
 225                                 int mode, /* 0=8KB FX2, 1=16KB FX2, 2=PROM */
 226                                 int enable_flag);
 227
 228 /* Return true if we're in a mode for retrieval CPU firmware */
 229 int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *);
 230
 231 /* Retrieve a piece of the CPU's firmware at the given offset.  Return
 232    value is the number of bytes retrieved or zero if we're past the end or
 233    an error otherwise (e.g. if firmware retrieval is not enabled). */
 234 int pvr2_hdw_cpufw_get(struct pvr2_hdw *,unsigned int offs,
 235                        char *buf,unsigned int cnt);
 236
 237 /* Retrieve a previously stored v4l minor device number */
 238 int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *,enum pvr2_v4l_type index);
 239
 240 /* Store a v4l minor device number */
 241 void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
 242                                      enum pvr2_v4l_type index,int);
 243
 244 /* Direct read/write access to chip's registers:
 245    match - specify criteria to identify target chip (this is a v4l dbg struct)
 246    reg_id  - register number to access
 247    setFl   - true to set the register, false to read it
 248    val_ptr - storage location for source / result. */
 249 int pvr2_hdw_register_access(struct pvr2_hdw *,
 250                              struct v4l2_dbg_match *match, u64 reg_id,
 251                              int setFl, u64 *val_ptr);
 252
 253 /* The following entry points are all lower level things you normally don't
 254    want to worry about. */
 255
 256 /* Issue a command and get a response from the device.  LOTS of higher
 257    level stuff is built on this. */
 258 int pvr2_send_request(struct pvr2_hdw *,
 259                       void *write_ptr,unsigned int write_len,
 260                       void *read_ptr,unsigned int read_len);
 261
 262 /* Slightly higher level device communication functions. */
 263 int pvr2_write_register(struct pvr2_hdw *, u16, u32);
 264
 265 /* Call if for any reason we can't talk to the hardware anymore - this will
 266    cause the driver to stop flailing on the device. */
 267 void pvr2_hdw_render_useless(struct pvr2_hdw *);
 268
 269 /* Set / clear 8051's reset bit */
 270 void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int);
 271
 272 /* Execute a USB-commanded device reset */
 273 void pvr2_hdw_device_reset(struct pvr2_hdw *);
 274
 275 /* Reset worker's error trapping circuit breaker */
 276 int pvr2_hdw_untrip(struct pvr2_hdw *);
 277
 278 /* Execute hard reset command (after this point it's likely that the
 279    encoder will have to be reconfigured).  This also clears the "useless"
 280    state. */
 281 int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *);
 282
 283 /* Execute simple reset command */
 284 int pvr2_hdw_cmd_powerup(struct pvr2_hdw *);
 285
 286 /* suspend */
 287 int pvr2_hdw_cmd_powerdown(struct pvr2_hdw *);
 288
 289 /* Order decoder to reset */
 290 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *);
 291
 292 /* Direct manipulation of GPIO bits */
 293 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *);
 294 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *);
 295 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *);
 296 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val);
 297 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val);
 298
 299 /* This data structure is specifically for the next function... */
 300 struct pvr2_hdw_debug_info {
 301         int big_lock_held;
 302         int ctl_lock_held;
 303         int flag_disconnected;
 304         int flag_init_ok;
 305         int flag_ok;
 306         int fw1_state;
 307         int flag_decoder_missed;
 308         int flag_tripped;
 309         int state_encoder_ok;
 310         int state_encoder_run;
 311         int state_decoder_run;
 312         int state_decoder_ready;
 313         int state_usbstream_run;
 314         int state_decoder_quiescent;
 315         int state_pipeline_config;
 316         int state_pipeline_req;
 317         int state_pipeline_pause;
 318         int state_pipeline_idle;
 319         int cmd_debug_state;
 320         int cmd_debug_write_len;
 321         int cmd_debug_read_len;
 322         int cmd_debug_write_pend;
 323         int cmd_debug_read_pend;
 324         int cmd_debug_timeout;
 325         int cmd_debug_rstatus;
 326         int cmd_debug_wstatus;
 327         unsigned char cmd_code;
 328 };
 329
 330 /* Non-intrusively retrieve internal state info - this is useful for
 331    diagnosing lockups.  Note that this operation is completed without any
 332    kind of locking and so it is not atomic and may yield inconsistent
 333    results.  This is *purely* a debugging aid. */
 334 void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw,
 335                                       struct pvr2_hdw_debug_info *);
 336
 337 /* Intrusively retrieve internal state info - this is useful for
 338    diagnosing overall driver state.  This operation synchronizes against
 339    the overall driver mutex - so if there are locking problems this will
 340    likely hang!  This is *purely* a debugging aid. */
 341 void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw,
 342                                     struct pvr2_hdw_debug_info *);
 343
 344 /* Report out several lines of text that describes driver internal state.
 345    Results are written into the passed-in buffer. */
 346 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
 347                                    char *buf_ptr,unsigned int buf_size);
 348
 349 /* Cause modules to log their state once */
 350 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw);
 351
 352 /* Cause encoder firmware to be uploaded into the device.  This is normally
 353    done autonomously, but the interface is exported here because it is also
 354    a debugging aid. */
 355 int pvr2_upload_firmware2(struct pvr2_hdw *hdw);
 356
 357 #endif /* __PVRUSB2_HDW_H */
 358
 359 /*
 360   Stuff for Emacs to see, in order to encourage consistent editing style:
 361   *** Local Variables: ***
 362   *** mode: c ***
 363   *** fill-column: 75 ***
 364   *** tab-width: 8 ***
 365   *** c-basic-offset: 8 ***
 366   *** End: ***
 367   */