1 /* 2 * Driver for the NXP SAA7164 PCIe bridge 3 * 4 * Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.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, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * 15 * GNU General Public License for more details. 16 */ 17 18 /* 19 Driver architecture 20 ******************* 21 22 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c 23 | : Standard Linux driver framework for creating 24 | : exposing and managing interfaces to the rest 25 | : of the kernel or userland. Also uses _fw.c to load 26 | : firmware direct into the PCIe bus, bypassing layers. 27 V 28 saa7164_api..() : Translate kernel specific functions/features 29 | : into command buffers. 30 V 31 saa7164_cmd..() : Manages the flow of command packets on/off, 32 | : the bus. Deal with bus errors, timeouts etc. 33 V 34 saa7164_bus..() : Manage a read/write memory ring buffer in the 35 | : PCIe Address space. 36 | 37 | saa7164_fw...() : Load any frimware 38 | | : direct into the device 39 V V 40 <- ----------------- PCIe address space -------------------- -> 41 */ 42 43 #include <linux/pci.h> 44 #include <linux/i2c.h> 45 #include <linux/kdev_t.h> 46 #include <linux/mutex.h> 47 #include <linux/crc32.h> 48 #include <linux/kthread.h> 49 #include <linux/freezer.h> 50 51 #include <media/tuner.h> 52 #include <media/tveeprom.h> 53 #include <media/dvb_demux.h> 54 #include <media/dvb_frontend.h> 55 #include <media/dvb_net.h> 56 #include <media/dvbdev.h> 57 #include <media/dmxdev.h> 58 #include <media/v4l2-common.h> 59 #include <media/v4l2-ioctl.h> 60 #include <media/v4l2-device.h> 61 #include <media/v4l2-ctrls.h> 62 #include <media/v4l2-event.h> 63 64 #include "saa7164-reg.h" 65 #include "saa7164-types.h" 66 67 #define SAA7164_MAXBOARDS 8 68 69 #define UNSET (-1U) 70 #define SAA7164_BOARD_NOAUTO UNSET 71 #define SAA7164_BOARD_UNKNOWN 0 72 #define SAA7164_BOARD_UNKNOWN_REV2 1 73 #define SAA7164_BOARD_UNKNOWN_REV3 2 74 #define SAA7164_BOARD_HAUPPAUGE_HVR2250 3 75 #define SAA7164_BOARD_HAUPPAUGE_HVR2200 4 76 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5 77 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6 78 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7 79 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8 80 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9 81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10 82 #define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 11 83 #define SAA7164_BOARD_HAUPPAUGE_HVR2255 12 84 #define SAA7164_BOARD_HAUPPAUGE_HVR2205 13 85 86 #define SAA7164_MAX_UNITS 8 87 #define SAA7164_TS_NUMBER_OF_LINES 312 88 #define SAA7164_PS_NUMBER_OF_LINES 256 89 #define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */ 90 #define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */ 91 #define SAA7164_MAX_VBI_BUFFERS 64 92 93 /* Port related defines */ 94 #define SAA7164_PORT_TS1 (0) 95 #define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1) 96 #define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1) 97 #define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1) 98 #define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1) 99 #define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1) 100 #define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1) 101 102 #define DBGLVL_FW 4 103 #define DBGLVL_DVB 8 104 #define DBGLVL_I2C 16 105 #define DBGLVL_API 32 106 #define DBGLVL_CMD 64 107 #define DBGLVL_BUS 128 108 #define DBGLVL_IRQ 256 109 #define DBGLVL_BUF 512 110 #define DBGLVL_ENC 1024 111 #define DBGLVL_VBI 2048 112 #define DBGLVL_THR 4096 113 #define DBGLVL_CPU 8192 114 115 #define SAA7164_NORMS \ 116 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP) 117 118 /* TV frequency range copied from tuner-core.c */ 119 #define SAA7164_TV_MIN_FREQ (44U * 16U) 120 #define SAA7164_TV_MAX_FREQ (958U * 16U) 121 122 enum port_t { 123 SAA7164_MPEG_UNDEFINED = 0, 124 SAA7164_MPEG_DVB, 125 SAA7164_MPEG_ENCODER, 126 SAA7164_MPEG_VBI, 127 }; 128 129 enum saa7164_i2c_bus_nr { 130 SAA7164_I2C_BUS_0 = 0, 131 SAA7164_I2C_BUS_1, 132 SAA7164_I2C_BUS_2, 133 }; 134 135 enum saa7164_buffer_flags { 136 SAA7164_BUFFER_UNDEFINED = 0, 137 SAA7164_BUFFER_FREE, 138 SAA7164_BUFFER_BUSY, 139 SAA7164_BUFFER_FULL 140 }; 141 142 enum saa7164_unit_type { 143 SAA7164_UNIT_UNDEFINED = 0, 144 SAA7164_UNIT_DIGITAL_DEMODULATOR, 145 SAA7164_UNIT_ANALOG_DEMODULATOR, 146 SAA7164_UNIT_TUNER, 147 SAA7164_UNIT_EEPROM, 148 SAA7164_UNIT_ZILOG_IRBLASTER, 149 SAA7164_UNIT_ENCODER, 150 }; 151 152 /* The PCIe bridge doesn't grant direct access to i2c. 153 * Instead, you address i2c devices using a uniqely 154 * allocated 'unitid' value via a messaging API. This 155 * is a problem. The kernel and existing demod/tuner 156 * drivers expect to talk 'i2c', so we have to maintain 157 * a translation layer, and a series of functions to 158 * convert i2c bus + device address into a unit id. 159 */ 160 struct saa7164_unit { 161 enum saa7164_unit_type type; 162 u8 id; 163 char *name; 164 enum saa7164_i2c_bus_nr i2c_bus_nr; 165 u8 i2c_bus_addr; 166 u8 i2c_reg_len; 167 }; 168 169 struct saa7164_board { 170 char *name; 171 enum port_t porta, portb, portc, 172 portd, porte, portf; 173 enum { 174 SAA7164_CHIP_UNDEFINED = 0, 175 SAA7164_CHIP_REV2, 176 SAA7164_CHIP_REV3, 177 } chiprev; 178 struct saa7164_unit unit[SAA7164_MAX_UNITS]; 179 }; 180 181 struct saa7164_subid { 182 u16 subvendor; 183 u16 subdevice; 184 u32 card; 185 }; 186 187 struct saa7164_encoder_fh { 188 struct v4l2_fh fh; 189 struct saa7164_port *port; 190 atomic_t v4l_reading; 191 }; 192 193 struct saa7164_vbi_fh { 194 struct v4l2_fh fh; 195 struct saa7164_port *port; 196 atomic_t v4l_reading; 197 }; 198 199 struct saa7164_histogram_bucket { 200 u32 val; 201 u32 count; 202 u64 update_time; 203 }; 204 205 struct saa7164_histogram { 206 char name[32]; 207 struct saa7164_histogram_bucket counter1[64]; 208 }; 209 210 struct saa7164_user_buffer { 211 struct list_head list; 212 213 /* Attributes */ 214 u8 *data; 215 u32 pos; 216 u32 actual_size; 217 218 u32 crc; 219 }; 220 221 struct saa7164_fw_status { 222 223 /* RISC Core details */ 224 u32 status; 225 u32 mode; 226 u32 spec; 227 u32 inst; 228 u32 cpuload; 229 u32 remainheap; 230 231 /* Firmware version */ 232 u32 version; 233 u32 major; 234 u32 sub; 235 u32 rel; 236 u32 buildnr; 237 }; 238 239 struct saa7164_dvb { 240 struct mutex lock; 241 struct dvb_adapter adapter; 242 struct dvb_frontend *frontend; 243 struct dvb_demux demux; 244 struct dmxdev dmxdev; 245 struct dmx_frontend fe_hw; 246 struct dmx_frontend fe_mem; 247 struct dvb_net net; 248 int feeding; 249 }; 250 251 struct saa7164_i2c { 252 struct saa7164_dev *dev; 253 254 enum saa7164_i2c_bus_nr nr; 255 256 /* I2C I/O */ 257 struct i2c_adapter i2c_adap; 258 struct i2c_client i2c_client; 259 u32 i2c_rc; 260 }; 261 262 struct saa7164_tvnorm { 263 char *name; 264 v4l2_std_id id; 265 }; 266 267 struct saa7164_encoder_params { 268 struct saa7164_tvnorm encodernorm; 269 u32 height; 270 u32 width; 271 u32 is_50hz; 272 u32 bitrate; /* bps */ 273 u32 bitrate_peak; /* bps */ 274 u32 bitrate_mode; 275 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 276 277 u32 audio_sampling_freq; 278 u32 ctl_mute; 279 u32 ctl_aspect; 280 u32 refdist; 281 u32 gop_size; 282 }; 283 284 struct saa7164_vbi_params { 285 struct saa7164_tvnorm encodernorm; 286 u32 height; 287 u32 width; 288 u32 is_50hz; 289 u32 bitrate; /* bps */ 290 u32 bitrate_peak; /* bps */ 291 u32 bitrate_mode; 292 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 293 294 u32 audio_sampling_freq; 295 u32 ctl_mute; 296 u32 ctl_aspect; 297 u32 refdist; 298 u32 gop_size; 299 }; 300 301 struct saa7164_port; 302 303 struct saa7164_buffer { 304 struct list_head list; 305 306 /* Note of which h/w buffer list index position we occupy */ 307 int idx; 308 309 struct saa7164_port *port; 310 311 /* Hardware Specific */ 312 /* PCI Memory allocations */ 313 enum saa7164_buffer_flags flags; /* Free, Busy, Full */ 314 315 /* A block of page align PCI memory */ 316 u32 pci_size; /* PCI allocation size in bytes */ 317 u64 *cpu; /* Virtual address */ 318 dma_addr_t dma; /* Physical address */ 319 u32 crc; /* Checksum for the entire buffer data */ 320 321 /* A page table that splits the block into a number of entries */ 322 u32 pt_size; /* PCI allocation size in bytes */ 323 u64 *pt_cpu; /* Virtual address */ 324 dma_addr_t pt_dma; /* Physical address */ 325 326 /* Encoder fops */ 327 u32 pos; 328 u32 actual_size; 329 }; 330 331 struct saa7164_port { 332 333 struct saa7164_dev *dev; 334 enum port_t type; 335 int nr; 336 337 /* --- Generic port attributes --- */ 338 339 /* HW stream parameters */ 340 struct tmHWStreamParameters hw_streamingparams; 341 342 /* DMA configuration values, is seeded during initialization */ 343 struct tmComResDMATermDescrHeader hwcfg; 344 345 /* hardware specific registers */ 346 u32 bufcounter; 347 u32 pitch; 348 u32 bufsize; 349 u32 bufoffset; 350 u32 bufptr32l; 351 u32 bufptr32h; 352 u64 bufptr64; 353 354 u32 numpte; /* Number of entries in array, only valid in head */ 355 356 struct mutex dmaqueue_lock; 357 struct saa7164_buffer dmaqueue; 358 359 u64 last_irq_msecs, last_svc_msecs; 360 u64 last_irq_msecs_diff, last_svc_msecs_diff; 361 u32 last_svc_wp; 362 u32 last_svc_rp; 363 u64 last_irq_svc_msecs_diff; 364 u64 last_read_msecs, last_read_msecs_diff; 365 u64 last_poll_msecs, last_poll_msecs_diff; 366 367 struct saa7164_histogram irq_interval; 368 struct saa7164_histogram svc_interval; 369 struct saa7164_histogram irq_svc_interval; 370 struct saa7164_histogram read_interval; 371 struct saa7164_histogram poll_interval; 372 373 /* --- DVB Transport Specific --- */ 374 struct saa7164_dvb dvb; 375 struct i2c_client *i2c_client_demod; 376 struct i2c_client *i2c_client_tuner; 377 378 /* --- Encoder/V4L related attributes --- */ 379 /* Encoder */ 380 /* Defaults established in saa7164-encoder.c */ 381 struct saa7164_tvnorm encodernorm; 382 struct v4l2_ctrl_handler ctrl_handler; 383 v4l2_std_id std; 384 u32 height; 385 u32 width; 386 u32 freq; 387 u8 mux_input; 388 u8 encoder_profile; 389 u8 video_format; 390 u8 audio_format; 391 u8 video_resolution; 392 u16 ctl_brightness; 393 u16 ctl_contrast; 394 u16 ctl_hue; 395 u16 ctl_saturation; 396 u16 ctl_sharpness; 397 s8 ctl_volume; 398 399 struct tmComResAFeatureDescrHeader audfeat; 400 struct tmComResEncoderDescrHeader encunit; 401 struct tmComResProcDescrHeader vidproc; 402 struct tmComResExtDevDescrHeader ifunit; 403 struct tmComResTunerDescrHeader tunerunit; 404 405 struct work_struct workenc; 406 407 /* V4L Encoder Video */ 408 struct saa7164_encoder_params encoder_params; 409 struct video_device *v4l_device; 410 atomic_t v4l_reader_count; 411 412 struct saa7164_buffer list_buf_used; 413 struct saa7164_buffer list_buf_free; 414 wait_queue_head_t wait_read; 415 416 /* V4L VBI */ 417 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc; 418 struct saa7164_vbi_params vbi_params; 419 struct saa7164_port *enc_port; 420 421 /* Debug */ 422 u32 sync_errors; 423 u32 v_cc_errors; 424 u32 a_cc_errors; 425 u8 last_v_cc; 426 u8 last_a_cc; 427 u32 done_first_interrupt; 428 }; 429 430 struct saa7164_dev { 431 struct list_head devlist; 432 atomic_t refcount; 433 434 struct v4l2_device v4l2_dev; 435 436 /* pci stuff */ 437 struct pci_dev *pci; 438 unsigned char pci_rev, pci_lat; 439 int pci_bus, pci_slot; 440 u32 __iomem *lmmio; 441 u8 __iomem *bmmio; 442 u32 __iomem *lmmio2; 443 u8 __iomem *bmmio2; 444 int pci_irqmask; 445 446 /* board details */ 447 int nr; 448 int hwrevision; 449 u32 board; 450 char name[16]; 451 452 /* firmware status */ 453 struct saa7164_fw_status fw_status; 454 u32 firmwareloaded; 455 456 struct tmComResHWDescr hwdesc; 457 struct tmComResInterfaceDescr intfdesc; 458 struct tmComResBusDescr busdesc; 459 460 struct tmComResBusInfo bus; 461 462 /* Interrupt status and ack registers */ 463 u32 int_status; 464 u32 int_ack; 465 bool msi; 466 467 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS]; 468 struct mutex lock; 469 470 /* I2c related */ 471 struct saa7164_i2c i2c_bus[3]; 472 473 /* Transport related */ 474 struct saa7164_port ports[SAA7164_MAX_PORTS]; 475 476 /* Deferred command/api interrupts handling */ 477 struct work_struct workcmd; 478 479 /* A kernel thread to monitor the firmware log, used 480 * only in debug mode. 481 */ 482 struct task_struct *kthread; 483 484 }; 485 486 extern struct list_head saa7164_devlist; 487 extern unsigned int waitsecs; 488 extern unsigned int encoder_buffers; 489 extern unsigned int vbi_buffers; 490 491 /* ----------------------------------------------------------- */ 492 /* saa7164-core.c */ 493 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr); 494 void saa7164_getfirmwarestatus(struct saa7164_dev *dev); 495 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev); 496 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val); 497 498 /* ----------------------------------------------------------- */ 499 /* saa7164-fw.c */ 500 int saa7164_downloadfirmware(struct saa7164_dev *dev); 501 502 /* ----------------------------------------------------------- */ 503 /* saa7164-i2c.c */ 504 extern int saa7164_i2c_register(struct saa7164_i2c *bus); 505 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus); 506 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus, 507 unsigned int cmd, void *arg); 508 509 /* ----------------------------------------------------------- */ 510 /* saa7164-bus.c */ 511 int saa7164_bus_setup(struct saa7164_dev *dev); 512 void saa7164_bus_dump(struct saa7164_dev *dev); 513 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg, 514 void *buf); 515 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg, 516 void *buf, int peekonly); 517 518 /* ----------------------------------------------------------- */ 519 /* saa7164-cmd.c */ 520 int saa7164_cmd_send(struct saa7164_dev *dev, 521 u8 id, enum tmComResCmd command, u16 controlselector, 522 u16 size, void *buf); 523 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno); 524 int saa7164_irq_dequeue(struct saa7164_dev *dev); 525 526 /* ----------------------------------------------------------- */ 527 /* saa7164-api.c */ 528 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version); 529 int saa7164_api_enum_subdevs(struct saa7164_dev *dev); 530 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg, 531 u32 datalen, u8 *data); 532 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr, 533 u32 datalen, u8 *data); 534 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr, 535 u32 datalen, u8 *data); 536 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen); 537 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 538 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 539 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode); 540 int saa7164_api_initialize_dif(struct saa7164_port *port); 541 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std); 542 int saa7164_api_set_encoder(struct saa7164_port *port); 543 int saa7164_api_get_encoder(struct saa7164_port *port); 544 int saa7164_api_set_aspect_ratio(struct saa7164_port *port); 545 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl); 546 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl); 547 int saa7164_api_set_videomux(struct saa7164_port *port); 548 int saa7164_api_audio_mute(struct saa7164_port *port, int mute); 549 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level); 550 int saa7164_api_set_audio_std(struct saa7164_port *port); 551 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect); 552 int saa7164_api_get_videomux(struct saa7164_port *port); 553 int saa7164_api_set_vbi_format(struct saa7164_port *port); 554 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level); 555 int saa7164_api_collect_debug(struct saa7164_dev *dev); 556 int saa7164_api_get_load_info(struct saa7164_dev *dev, 557 struct tmFwInfoStruct *i); 558 559 /* ----------------------------------------------------------- */ 560 /* saa7164-cards.c */ 561 extern struct saa7164_board saa7164_boards[]; 562 extern const unsigned int saa7164_bcount; 563 564 extern struct saa7164_subid saa7164_subids[]; 565 extern const unsigned int saa7164_idcount; 566 567 extern void saa7164_card_list(struct saa7164_dev *dev); 568 extern void saa7164_gpio_setup(struct saa7164_dev *dev); 569 extern void saa7164_card_setup(struct saa7164_dev *dev); 570 571 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr); 572 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr); 573 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid); 574 575 /* ----------------------------------------------------------- */ 576 /* saa7164-dvb.c */ 577 extern int saa7164_dvb_register(struct saa7164_port *port); 578 extern int saa7164_dvb_unregister(struct saa7164_port *port); 579 580 /* ----------------------------------------------------------- */ 581 /* saa7164-buffer.c */ 582 extern struct saa7164_buffer *saa7164_buffer_alloc( 583 struct saa7164_port *port, u32 len); 584 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf); 585 extern void saa7164_buffer_display(struct saa7164_buffer *buf); 586 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i); 587 extern int saa7164_buffer_cfg_port(struct saa7164_port *port); 588 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user( 589 struct saa7164_dev *dev, u32 len); 590 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf); 591 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i); 592 593 /* ----------------------------------------------------------- */ 594 /* saa7164-encoder.c */ 595 int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id); 596 int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id); 597 int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i); 598 int saa7164_g_input(struct saa7164_port *port, unsigned int *i); 599 int saa7164_s_input(struct saa7164_port *port, unsigned int i); 600 int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t); 601 int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t); 602 int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f); 603 int saa7164_s_frequency(struct saa7164_port *port, 604 const struct v4l2_frequency *f); 605 int saa7164_encoder_register(struct saa7164_port *port); 606 void saa7164_encoder_unregister(struct saa7164_port *port); 607 608 /* ----------------------------------------------------------- */ 609 /* saa7164-vbi.c */ 610 int saa7164_vbi_register(struct saa7164_port *port); 611 void saa7164_vbi_unregister(struct saa7164_port *port); 612 613 /* ----------------------------------------------------------- */ 614 615 extern unsigned int crc_checking; 616 617 extern unsigned int saa_debug; 618 #define dprintk(level, fmt, arg...)\ 619 do { if (saa_debug & level)\ 620 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\ 621 } while (0) 622 623 #define log_warn(fmt, arg...)\ 624 do { \ 625 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\ 626 } while (0) 627 628 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 629 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 630 631 #define saa7164_readb(reg) readl(dev->bmmio + (reg)) 632 #define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg)) 633 634