drivers/media/usb/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 <media/v4l2-dev.h>
  26 #include "pvrusb2-io.h"
  27 #include "pvrusb2-ctrl.h"
  28
  29
  30 /* Private internal control ids, look these up with
  31    pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */
  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 #define PVR2_CID_STDDETECT 19
  50
  51 /* Legal values for the INPUT state variable */
  52 #define PVR2_CVAL_INPUT_TV 0
  53 #define PVR2_CVAL_INPUT_DTV 1
  54 #define PVR2_CVAL_INPUT_COMPOSITE 2
  55 #define PVR2_CVAL_INPUT_SVIDEO 3
  56 #define PVR2_CVAL_INPUT_RADIO 4
  57
  58 enum pvr2_config {
  59         pvr2_config_empty,    /* No configuration */
  60         pvr2_config_mpeg,     /* Encoded / compressed video */
  61         pvr2_config_vbi,      /* Standard vbi info */
  62         pvr2_config_pcm,      /* Audio raw pcm stream */
  63         pvr2_config_rawvideo, /* Video raw frames */
  64 };
  65
  66 enum pvr2_v4l_type {
  67         pvr2_v4l_type_video,
  68         pvr2_v4l_type_vbi,
  69         pvr2_v4l_type_radio,
  70 };
  71
  72 /* Major states that we can be in:
  73  *
  74  *  DEAD - Device is in an unusable state and cannot be recovered.  This
  75  *  can happen if we completely lose the ability to communicate with it
  76  *  (but it might still on the bus).  In this state there's nothing we can
  77  *  do; it must be replugged in order to recover.
  78  *
  79  *  COLD - Device is in an unusable state, needs microcontroller firmware.
  80  *
  81  *  WARM - We can communicate with the device and the proper
  82  *  microcontroller firmware is running, but other device initialization is
  83  *  still needed (e.g. encoder firmware).
  84  *
  85  *  ERROR - A problem prevents capture operation (e.g. encoder firmware
  86  *  missing).
  87  *
  88  *  READY - Device is operational, but not streaming.
  89  *
  90  *  RUN - Device is streaming.
  91  *
  92  */
  93 #define PVR2_STATE_NONE 0
  94 #define PVR2_STATE_DEAD 1
  95 #define PVR2_STATE_COLD 2
  96 #define PVR2_STATE_WARM 3
  97 #define PVR2_STATE_ERROR 4
  98 #define PVR2_STATE_READY 5
  99 #define PVR2_STATE_RUN 6
 100
 101 /* Translate configuration enum to a string label */
 102 const char *pvr2_config_get_name(enum pvr2_config);
 103
 104 struct pvr2_hdw;
 105
 106 /* Create and return a structure for interacting with the underlying
 107    hardware */
 108 struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
 109                                  const struct usb_device_id *devid);
 110
 111 /* Perform second stage initialization, passing in a notification callback
 112    for when the master state changes. */
 113 int pvr2_hdw_initialize(struct pvr2_hdw *,
 114                         void (*callback_func)(void *),
 115                         void *callback_data);
 116
 117 /* Destroy hardware interaction structure */
 118 void pvr2_hdw_destroy(struct pvr2_hdw *);
 119
 120 /* Return true if in the ready (normal) state */
 121 int pvr2_hdw_dev_ok(struct pvr2_hdw *);
 122
 123 /* Return small integer number [1..N] for logical instance number of this
 124    device.  This is useful for indexing array-valued module parameters. */
 125 int pvr2_hdw_get_unit_number(struct pvr2_hdw *);
 126
 127 /* Get pointer to underlying USB device */
 128 struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *);
 129
 130 /* Retrieve serial number of device */
 131 unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
 132
 133 /* Retrieve bus location info of device */
 134 const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
 135
 136 /* Retrieve per-instance string identifier for this specific device */
 137 const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *);
 138
 139 /* Called when hardware has been unplugged */
 140 void pvr2_hdw_disconnect(struct pvr2_hdw *);
 141
 142 /* Sets v4l2_dev of a video_device struct */
 143 void pvr2_hdw_set_v4l2_dev(struct pvr2_hdw *, struct video_device *);
 144
 145 /* Get the number of defined controls */
 146 unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *);
 147
 148 /* Retrieve a control handle given its index (0..count-1) */
 149 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *,unsigned int);
 150
 151 /* Retrieve a control handle given its internal ID (if any) */
 152 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *,unsigned int);
 153
 154 /* Retrieve a control handle given its V4L ID (if any) */
 155 struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *,unsigned int ctl_id);
 156
 157 /* Retrieve a control handle given its immediate predecessor V4L ID (if any) */
 158 struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *,
 159                                             unsigned int ctl_id);
 160
 161 /* Commit all control changes made up to this point */
 162 int pvr2_hdw_commit_ctl(struct pvr2_hdw *);
 163
 164 /* Return a bit mask of valid input selections for this device.  Mask bits
 165  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 166 unsigned int pvr2_hdw_get_input_available(struct pvr2_hdw *);
 167
 168 /* Return a bit mask of allowed input selections for this device.  Mask bits
 169  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 170 unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *);
 171
 172 /* Change the set of allowed input selections for this device.  Both
 173    change_mask and change_valu are mask bits according to
 174    PVR_CVAL_INPUT_xxxx definitions.  The change_mask parameter indicate
 175    which settings are being changed and the change_val parameter indicates
 176    whether corresponding settings are being set or cleared. */
 177 int pvr2_hdw_set_input_allowed(struct pvr2_hdw *,
 178                                unsigned int change_mask,
 179                                unsigned int change_val);
 180
 181 /* Return name for this driver instance */
 182 const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *);
 183
 184 /* Mark tuner status stale so that it will be re-fetched */
 185 void pvr2_hdw_execute_tuner_poll(struct pvr2_hdw *);
 186
 187 /* Return information about the tuner */
 188 int pvr2_hdw_get_tuner_status(struct pvr2_hdw *,struct v4l2_tuner *);
 189
 190 /* Return information about cropping capabilities */
 191 int pvr2_hdw_get_cropcap(struct pvr2_hdw *, struct v4l2_cropcap *);
 192
 193 /* Query device and see if it thinks it is on a high-speed USB link */
 194 int pvr2_hdw_is_hsm(struct pvr2_hdw *);
 195
 196 /* Return a string token representative of the hardware type */
 197 const char *pvr2_hdw_get_type(struct pvr2_hdw *);
 198
 199 /* Return a single line description of the hardware type */
 200 const char *pvr2_hdw_get_desc(struct pvr2_hdw *);
 201
 202 /* Turn streaming on/off */
 203 int pvr2_hdw_set_streaming(struct pvr2_hdw *,int);
 204
 205 /* Find out if streaming is on */
 206 int pvr2_hdw_get_streaming(struct pvr2_hdw *);
 207
 208 /* Retrieve driver overall state */
 209 int pvr2_hdw_get_state(struct pvr2_hdw *);
 210
 211 /* Configure the type of stream to generate */
 212 int pvr2_hdw_set_stream_type(struct pvr2_hdw *, enum pvr2_config);
 213
 214 /* Get handle to video output stream */
 215 struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *);
 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 mode, /* 0=8KB FX2, 1=16KB FX2, 2=PROM */
 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 /* The following entry points are all lower level things you normally don't
 242    want to worry about. */
 243
 244 /* Issue a command and get a response from the device.  LOTS of higher
 245    level stuff is built on this. */
 246 int pvr2_send_request(struct pvr2_hdw *,
 247                       void *write_ptr,unsigned int write_len,
 248                       void *read_ptr,unsigned int read_len);
 249
 250 /* Slightly higher level device communication functions. */
 251 int pvr2_write_register(struct pvr2_hdw *, u16, u32);
 252
 253 /* Call if for any reason we can't talk to the hardware anymore - this will
 254    cause the driver to stop flailing on the device. */
 255 void pvr2_hdw_render_useless(struct pvr2_hdw *);
 256
 257 /* Set / clear 8051's reset bit */
 258 void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int);
 259
 260 /* Execute a USB-commanded device reset */
 261 void pvr2_hdw_device_reset(struct pvr2_hdw *);
 262
 263 /* Reset worker's error trapping circuit breaker */
 264 int pvr2_hdw_untrip(struct pvr2_hdw *);
 265
 266 /* Execute hard reset command (after this point it's likely that the
 267    encoder will have to be reconfigured).  This also clears the "useless"
 268    state. */
 269 int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *);
 270
 271 /* Execute simple reset command */
 272 int pvr2_hdw_cmd_powerup(struct pvr2_hdw *);
 273
 274 /* suspend */
 275 int pvr2_hdw_cmd_powerdown(struct pvr2_hdw *);
 276
 277 /* Order decoder to reset */
 278 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *);
 279
 280 /* Direct manipulation of GPIO bits */
 281 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *);
 282 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *);
 283 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *);
 284 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val);
 285 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val);
 286
 287 /* This data structure is specifically for the next function... */
 288 struct pvr2_hdw_debug_info {
 289         int big_lock_held;
 290         int ctl_lock_held;
 291         int flag_disconnected;
 292         int flag_init_ok;
 293         int flag_ok;
 294         int fw1_state;
 295         int flag_decoder_missed;
 296         int flag_tripped;
 297         int state_encoder_ok;
 298         int state_encoder_run;
 299         int state_decoder_run;
 300         int state_decoder_ready;
 301         int state_usbstream_run;
 302         int state_decoder_quiescent;
 303         int state_pipeline_config;
 304         int state_pipeline_req;
 305         int state_pipeline_pause;
 306         int state_pipeline_idle;
 307         int cmd_debug_state;
 308         int cmd_debug_write_len;
 309         int cmd_debug_read_len;
 310         int cmd_debug_write_pend;
 311         int cmd_debug_read_pend;
 312         int cmd_debug_timeout;
 313         int cmd_debug_rstatus;
 314         int cmd_debug_wstatus;
 315         unsigned char cmd_code;
 316 };
 317
 318 /* Non-intrusively retrieve internal state info - this is useful for
 319    diagnosing lockups.  Note that this operation is completed without any
 320    kind of locking and so it is not atomic and may yield inconsistent
 321    results.  This is *purely* a debugging aid. */
 322 void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw,
 323                                       struct pvr2_hdw_debug_info *);
 324
 325 /* Intrusively retrieve internal state info - this is useful for
 326    diagnosing overall driver state.  This operation synchronizes against
 327    the overall driver mutex - so if there are locking problems this will
 328    likely hang!  This is *purely* a debugging aid. */
 329 void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw,
 330                                     struct pvr2_hdw_debug_info *);
 331
 332 /* Report out several lines of text that describes driver internal state.
 333    Results are written into the passed-in buffer. */
 334 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
 335                                    char *buf_ptr,unsigned int buf_size);
 336
 337 /* Cause modules to log their state once */
 338 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw);
 339
 340 /* Cause encoder firmware to be uploaded into the device.  This is normally
 341    done autonomously, but the interface is exported here because it is also
 342    a debugging aid. */
 343 int pvr2_upload_firmware2(struct pvr2_hdw *hdw);
 344
 345 #endif /* __PVRUSB2_HDW_H */
 346
 347 /*
 348   Stuff for Emacs to see, in order to encourage consistent editing style:
 349   *** Local Variables: ***
 350   *** mode: c ***
 351   *** fill-column: 75 ***
 352   *** tab-width: 8 ***
 353   *** c-basic-offset: 8 ***
 354   *** End: ***
 355   */