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 /* Order decoder to reset */ 275 int pvr2_hdw_cmd_decoder_reset(struct pvr2_hdw *); 276 277 /* Direct manipulation of GPIO bits */ 278 int pvr2_hdw_gpio_get_dir(struct pvr2_hdw *hdw,u32 *); 279 int pvr2_hdw_gpio_get_out(struct pvr2_hdw *hdw,u32 *); 280 int pvr2_hdw_gpio_get_in(struct pvr2_hdw *hdw,u32 *); 281 int pvr2_hdw_gpio_chg_dir(struct pvr2_hdw *hdw,u32 msk,u32 val); 282 int pvr2_hdw_gpio_chg_out(struct pvr2_hdw *hdw,u32 msk,u32 val); 283 284 /* This data structure is specifically for the next function... */ 285 struct pvr2_hdw_debug_info { 286 int big_lock_held; 287 int ctl_lock_held; 288 int flag_disconnected; 289 int flag_init_ok; 290 int flag_ok; 291 int fw1_state; 292 int flag_decoder_missed; 293 int flag_tripped; 294 int state_encoder_ok; 295 int state_encoder_run; 296 int state_decoder_run; 297 int state_decoder_ready; 298 int state_usbstream_run; 299 int state_decoder_quiescent; 300 int state_pipeline_config; 301 int state_pipeline_req; 302 int state_pipeline_pause; 303 int state_pipeline_idle; 304 int cmd_debug_state; 305 int cmd_debug_write_len; 306 int cmd_debug_read_len; 307 int cmd_debug_write_pend; 308 int cmd_debug_read_pend; 309 int cmd_debug_timeout; 310 int cmd_debug_rstatus; 311 int cmd_debug_wstatus; 312 unsigned char cmd_code; 313 }; 314 315 /* Non-intrusively retrieve internal state info - this is useful for 316 diagnosing lockups. Note that this operation is completed without any 317 kind of locking and so it is not atomic and may yield inconsistent 318 results. This is *purely* a debugging aid. */ 319 void pvr2_hdw_get_debug_info_unlocked(const struct pvr2_hdw *hdw, 320 struct pvr2_hdw_debug_info *); 321 322 /* Intrusively retrieve internal state info - this is useful for 323 diagnosing overall driver state. This operation synchronizes against 324 the overall driver mutex - so if there are locking problems this will 325 likely hang! This is *purely* a debugging aid. */ 326 void pvr2_hdw_get_debug_info_locked(struct pvr2_hdw *hdw, 327 struct pvr2_hdw_debug_info *); 328 329 /* Report out several lines of text that describes driver internal state. 330 Results are written into the passed-in buffer. */ 331 unsigned int pvr2_hdw_state_report(struct pvr2_hdw *hdw, 332 char *buf_ptr,unsigned int buf_size); 333 334 /* Cause modules to log their state once */ 335 void pvr2_hdw_trigger_module_log(struct pvr2_hdw *hdw); 336 337 /* Cause encoder firmware to be uploaded into the device. This is normally 338 done autonomously, but the interface is exported here because it is also 339 a debugging aid. */ 340 int pvr2_upload_firmware2(struct pvr2_hdw *hdw); 341 342 #endif /* __PVRUSB2_HDW_H */ 343