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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  *
   4  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   5  */
   6 #ifndef __PVRUSB2_HDW_H
   7 #define __PVRUSB2_HDW_H
   8
   9 #include <linux/usb.h>
  10 #include <linux/videodev2.h>
  11 #include <media/v4l2-dev.h>
  12 #include "pvrusb2-io.h"
  13 #include "pvrusb2-ctrl.h"
  14
  15
  16 /* Private internal control ids, look these up with
  17    pvr2_hdw_get_ctrl_by_id() - these are NOT visible in V4L */
  18 #define PVR2_CID_STDCUR 2
  19 #define PVR2_CID_STDAVAIL 3
  20 #define PVR2_CID_INPUT 4
  21 #define PVR2_CID_AUDIOMODE 5
  22 #define PVR2_CID_FREQUENCY 6
  23 #define PVR2_CID_HRES 7
  24 #define PVR2_CID_VRES 8
  25 #define PVR2_CID_CROPL 9
  26 #define PVR2_CID_CROPT 10
  27 #define PVR2_CID_CROPW 11
  28 #define PVR2_CID_CROPH 12
  29 #define PVR2_CID_CROPCAPPAN 13
  30 #define PVR2_CID_CROPCAPPAD 14
  31 #define PVR2_CID_CROPCAPBL 15
  32 #define PVR2_CID_CROPCAPBT 16
  33 #define PVR2_CID_CROPCAPBW 17
  34 #define PVR2_CID_CROPCAPBH 18
  35 #define PVR2_CID_STDDETECT 19
  36
  37 /* Legal values for the INPUT state variable */
  38 #define PVR2_CVAL_INPUT_TV 0
  39 #define PVR2_CVAL_INPUT_DTV 1
  40 #define PVR2_CVAL_INPUT_COMPOSITE 2
  41 #define PVR2_CVAL_INPUT_SVIDEO 3
  42 #define PVR2_CVAL_INPUT_RADIO 4
  43 #define PVR2_CVAL_INPUT_MAX PVR2_CVAL_INPUT_RADIO
  44
  45 enum pvr2_config {
  46         pvr2_config_empty,    /* No configuration */
  47         pvr2_config_mpeg,     /* Encoded / compressed video */
  48         pvr2_config_vbi,      /* Standard vbi info */
  49         pvr2_config_pcm,      /* Audio raw pcm stream */
  50         pvr2_config_rawvideo, /* Video raw frames */
  51 };
  52
  53 enum pvr2_v4l_type {
  54         pvr2_v4l_type_video,
  55         pvr2_v4l_type_vbi,
  56         pvr2_v4l_type_radio,
  57 };
  58
  59 /* Major states that we can be in:
  60  *
  61  *  DEAD - Device is in an unusable state and cannot be recovered.  This
  62  *  can happen if we completely lose the ability to communicate with it
  63  *  (but it might still on the bus).  In this state there's nothing we can
  64  *  do; it must be replugged in order to recover.
  65  *
  66  *  COLD - Device is in an unusable state, needs microcontroller firmware.
  67  *
  68  *  WARM - We can communicate with the device and the proper
  69  *  microcontroller firmware is running, but other device initialization is
  70  *  still needed (e.g. encoder firmware).
  71  *
  72  *  ERROR - A problem prevents capture operation (e.g. encoder firmware
  73  *  missing).
  74  *
  75  *  READY - Device is operational, but not streaming.
  76  *
  77  *  RUN - Device is streaming.
  78  *
  79  */
  80 #define PVR2_STATE_NONE 0
  81 #define PVR2_STATE_DEAD 1
  82 #define PVR2_STATE_COLD 2
  83 #define PVR2_STATE_WARM 3
  84 #define PVR2_STATE_ERROR 4
  85 #define PVR2_STATE_READY 5
  86 #define PVR2_STATE_RUN 6
  87
  88 /* Translate configuration enum to a string label */
  89 const char *pvr2_config_get_name(enum pvr2_config);
  90
  91 struct pvr2_hdw;
  92
  93 /* Create and return a structure for interacting with the underlying
  94    hardware */
  95 struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf,
  96                                  const struct usb_device_id *devid);
  97
  98 /* Perform second stage initialization, passing in a notification callback
  99    for when the master state changes. */
 100 int pvr2_hdw_initialize(struct pvr2_hdw *,
 101                         void (*callback_func)(void *),
 102                         void *callback_data);
 103
 104 /* Destroy hardware interaction structure */
 105 void pvr2_hdw_destroy(struct pvr2_hdw *);
 106
 107 /* Return true if in the ready (normal) state */
 108 int pvr2_hdw_dev_ok(struct pvr2_hdw *);
 109
 110 /* Return small integer number [1..N] for logical instance number of this
 111    device.  This is useful for indexing array-valued module parameters. */
 112 int pvr2_hdw_get_unit_number(struct pvr2_hdw *);
 113
 114 /* Get pointer to underlying USB device */
 115 struct usb_device *pvr2_hdw_get_dev(struct pvr2_hdw *);
 116
 117 /* Retrieve serial number of device */
 118 unsigned long pvr2_hdw_get_sn(struct pvr2_hdw *);
 119
 120 /* Retrieve bus location info of device */
 121 const char *pvr2_hdw_get_bus_info(struct pvr2_hdw *);
 122
 123 /* Retrieve per-instance string identifier for this specific device */
 124 const char *pvr2_hdw_get_device_identifier(struct pvr2_hdw *);
 125
 126 /* Called when hardware has been unplugged */
 127 void pvr2_hdw_disconnect(struct pvr2_hdw *);
 128
 129 /* Sets v4l2_dev of a video_device struct */
 130 void pvr2_hdw_set_v4l2_dev(struct pvr2_hdw *, struct video_device *);
 131
 132 /* Get the number of defined controls */
 133 unsigned int pvr2_hdw_get_ctrl_count(struct pvr2_hdw *);
 134
 135 /* Retrieve a control handle given its index (0..count-1) */
 136 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_index(struct pvr2_hdw *,unsigned int);
 137
 138 /* Retrieve a control handle given its internal ID (if any) */
 139 struct pvr2_ctrl *pvr2_hdw_get_ctrl_by_id(struct pvr2_hdw *,unsigned int);
 140
 141 /* Retrieve a control handle given its V4L ID (if any) */
 142 struct pvr2_ctrl *pvr2_hdw_get_ctrl_v4l(struct pvr2_hdw *,unsigned int ctl_id);
 143
 144 /* Retrieve a control handle given its immediate predecessor V4L ID (if any) */
 145 struct pvr2_ctrl *pvr2_hdw_get_ctrl_nextv4l(struct pvr2_hdw *,
 146                                             unsigned int ctl_id);
 147
 148 /* Commit all control changes made up to this point */
 149 int pvr2_hdw_commit_ctl(struct pvr2_hdw *);
 150
 151 /* Return a bit mask of valid input selections for this device.  Mask bits
 152  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 153 unsigned int pvr2_hdw_get_input_available(struct pvr2_hdw *);
 154
 155 /* Return a bit mask of allowed input selections for this device.  Mask bits
 156  * will be according to PVR_CVAL_INPUT_xxxx definitions. */
 157 unsigned int pvr2_hdw_get_input_allowed(struct pvr2_hdw *);
 158
 159 /* Change the set of allowed input selections for this device.  Both
 160    change_mask and change_valu are mask bits according to
 161    PVR_CVAL_INPUT_xxxx definitions.  The change_mask parameter indicate
 162    which settings are being changed and the change_val parameter indicates
 163    whether corresponding settings are being set or cleared. */
 164 int pvr2_hdw_set_input_allowed(struct pvr2_hdw *,
 165                                unsigned int change_mask,
 166                                unsigned int change_val);
 167
 168 /* Return name for this driver instance */
 169 const char *pvr2_hdw_get_driver_name(struct pvr2_hdw *);
 170
 171 /* Mark tuner status stale so that it will be re-fetched */
 172 void pvr2_hdw_execute_tuner_poll(struct pvr2_hdw *);
 173
 174 /* Return information about the tuner */
 175 int pvr2_hdw_get_tuner_status(struct pvr2_hdw *,struct v4l2_tuner *);
 176
 177 /* Return information about cropping capabilities */
 178 int pvr2_hdw_get_cropcap(struct pvr2_hdw *, struct v4l2_cropcap *);
 179
 180 /* Query device and see if it thinks it is on a high-speed USB link */
 181 int pvr2_hdw_is_hsm(struct pvr2_hdw *);
 182
 183 /* Return a string token representative of the hardware type */
 184 const char *pvr2_hdw_get_type(struct pvr2_hdw *);
 185
 186 /* Return a single line description of the hardware type */
 187 const char *pvr2_hdw_get_desc(struct pvr2_hdw *);
 188
 189 /* Turn streaming on/off */
 190 int pvr2_hdw_set_streaming(struct pvr2_hdw *,int);
 191
 192 /* Find out if streaming is on */
 193 int pvr2_hdw_get_streaming(struct pvr2_hdw *);
 194
 195 /* Retrieve driver overall state */
 196 int pvr2_hdw_get_state(struct pvr2_hdw *);
 197
 198 /* Configure the type of stream to generate */
 199 int pvr2_hdw_set_stream_type(struct pvr2_hdw *, enum pvr2_config);
 200
 201 /* Get handle to video output stream */
 202 struct pvr2_stream *pvr2_hdw_get_video_stream(struct pvr2_hdw *);
 203
 204 /* Enable / disable retrieval of CPU firmware or prom contents.  This must
 205    be enabled before pvr2_hdw_cpufw_get() will function.  Note that doing
 206    this may prevent the device from running (and leaving this mode may
 207    imply a device reset). */
 208 void pvr2_hdw_cpufw_set_enabled(struct pvr2_hdw *,
 209                                 int mode, /* 0=8KB FX2, 1=16KB FX2, 2=PROM */
 210                                 int enable_flag);
 211
 212 /* Return true if we're in a mode for retrieval CPU firmware */
 213 int pvr2_hdw_cpufw_get_enabled(struct pvr2_hdw *);
 214
 215 /* Retrieve a piece of the CPU's firmware at the given offset.  Return
 216    value is the number of bytes retrieved or zero if we're past the end or
 217    an error otherwise (e.g. if firmware retrieval is not enabled). */
 218 int pvr2_hdw_cpufw_get(struct pvr2_hdw *,unsigned int offs,
 219                        char *buf,unsigned int cnt);
 220
 221 /* Retrieve a previously stored v4l minor device number */
 222 int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *,enum pvr2_v4l_type index);
 223
 224 /* Store a v4l minor device number */
 225 void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,
 226                                      enum pvr2_v4l_type index,int);
 227
 228 /* The following entry points are all lower level things you normally don't
 229    want to worry about. */
 230
 231 /* Issue a command and get a response from the device.  LOTS of higher
 232    level stuff is built on this. */
 233 int pvr2_send_request(struct pvr2_hdw *,
 234                       void *write_ptr,unsigned int write_len,
 235                       void *read_ptr,unsigned int read_len);
 236
 237 /* Slightly higher level device communication functions. */
 238 int pvr2_write_register(struct pvr2_hdw *, u16, u32);
 239
 240 /* Call if for any reason we can't talk to the hardware anymore - this will
 241    cause the driver to stop flailing on the device. */
 242 void pvr2_hdw_render_useless(struct pvr2_hdw *);
 243
 244 /* Set / clear 8051's reset bit */
 245 void pvr2_hdw_cpureset_assert(struct pvr2_hdw *,int);
 246
 247 /* Execute a USB-commanded device reset */
 248 void pvr2_hdw_device_reset(struct pvr2_hdw *);
 249
 250 /* Reset worker's error trapping circuit breaker */
 251 int pvr2_hdw_untrip(struct pvr2_hdw *);
 252
 253 /* Execute hard reset command (after this point it's likely that the
 254    encoder will have to be reconfigured).  This also clears the "useless"
 255    state. */
 256 int pvr2_hdw_cmd_deep_reset(struct pvr2_hdw *);
 257
 258 /* Execute simple reset command */
 259 int pvr2_hdw_cmd_powerup(struct pvr2_hdw *);
 260
 261 /* Order decoder to reset */
 262 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *);
 263
 264 /* Direct manipulation of GPIO bits */
 265 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *);
 266 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *);
 267 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *);
 268 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val);
 269 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val);
 270
 271 /* This data structure is specifically for the next function... */
 272 struct pvr2_hdw_debug_info {
 273         int big_lock_held;
 274         int ctl_lock_held;
 275         int flag_disconnected;
 276         int flag_init_ok;
 277         int flag_ok;
 278         int fw1_state;
 279         int flag_decoder_missed;
 280         int flag_tripped;
 281         int state_encoder_ok;
 282         int state_encoder_run;
 283         int state_decoder_run;
 284         int state_decoder_ready;
 285         int state_usbstream_run;
 286         int state_decoder_quiescent;
 287         int state_pipeline_config;
 288         int state_pipeline_req;
 289         int state_pipeline_pause;
 290         int state_pipeline_idle;
 291         int cmd_debug_state;
 292         int cmd_debug_write_len;
 293         int cmd_debug_read_len;
 294         int cmd_debug_write_pend;
 295         int cmd_debug_read_pend;
 296         int cmd_debug_timeout;
 297         int cmd_debug_rstatus;
 298         int cmd_debug_wstatus;
 299         unsigned char cmd_code;
 300 };
 301
 302 /* Non-intrusively retrieve internal state info - this is useful for
 303    diagnosing lockups.  Note that this operation is completed without any
 304    kind of locking and so it is not atomic and may yield inconsistent
 305    results.  This is *purely* a debugging aid. */
 306 void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw,
 307                                       struct pvr2_hdw_debug_info *);
 308
 309 /* Intrusively retrieve internal state info - this is useful for
 310    diagnosing overall driver state.  This operation synchronizes against
 311    the overall driver mutex - so if there are locking problems this will
 312    likely hang!  This is *purely* a debugging aid. */
 313 void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw,
 314                                     struct pvr2_hdw_debug_info *);
 315
 316 /* Report out several lines of text that describes driver internal state.
 317    Results are written into the passed-in buffer. */
 318 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw,
 319                                    char *buf_ptr,unsigned int buf_size);
 320
 321 /* Cause modules to log their state once */
 322 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw);
 323
 324 /* Cause encoder firmware to be uploaded into the device.  This is normally
 325    done autonomously, but the interface is exported here because it is also
 326    a debugging aid. */
 327 int pvr2_upload_firmware2(struct pvr2_hdw *hdw);
 328
 329 #endif /* __PVRUSB2_HDW_H */