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 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22/* 23 Driver architecture 24 ******************* 25 26 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c 27 | : Standard Linux driver framework for creating 28 | : exposing and managing interfaces to the rest 29 | : of the kernel or userland. Also uses _fw.c to load 30 | : firmware direct into the PCIe bus, bypassing layers. 31 V 32 saa7164_api..() : Translate kernel specific functions/features 33 | : into command buffers. 34 V 35 saa7164_cmd..() : Manages the flow of command packets on/off, 36 | : the bus. Deal with bus errors, timeouts etc. 37 V 38 saa7164_bus..() : Manage a read/write memory ring buffer in the 39 | : PCIe Address space. 40 | 41 | saa7164_fw...() : Load any frimware 42 | | : direct into the device 43 V V 44 <- ----------------- PCIe address space -------------------- -> 45*/ 46 47#include <linux/pci.h> 48#include <linux/i2c.h> 49#include <linux/kdev_t.h> 50#include <linux/mutex.h> 51#include <linux/crc32.h> 52#include <linux/kthread.h> 53#include <linux/freezer.h> 54 55#include <media/tuner.h> 56#include <media/tveeprom.h> 57#include <dvb_demux.h> 58#include <dvb_frontend.h> 59#include <dvb_net.h> 60#include <dvbdev.h> 61#include <dmxdev.h> 62#include <media/v4l2-common.h> 63#include <media/v4l2-ioctl.h> 64#include <media/v4l2-device.h> 65#include <media/v4l2-ctrls.h> 66#include <media/v4l2-event.h> 67 68#include "saa7164-reg.h" 69#include "saa7164-types.h" 70 71#define SAA7164_MAXBOARDS 8 72 73#define UNSET (-1U) 74#define SAA7164_BOARD_NOAUTO UNSET 75#define SAA7164_BOARD_UNKNOWN 0 76#define SAA7164_BOARD_UNKNOWN_REV2 1 77#define SAA7164_BOARD_UNKNOWN_REV3 2 78#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3 79#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4 80#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5 81#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6 82#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7 83#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8 84#define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9 85#define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10 86#define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 11 87#define SAA7164_BOARD_HAUPPAUGE_HVR2255 12 88#define SAA7164_BOARD_HAUPPAUGE_HVR2205 13 89 90#define SAA7164_MAX_UNITS 8 91#define SAA7164_TS_NUMBER_OF_LINES 312 92#define SAA7164_PS_NUMBER_OF_LINES 256 93#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */ 94#define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */ 95#define SAA7164_MAX_VBI_BUFFERS 64 96 97/* Port related defines */ 98#define SAA7164_PORT_TS1 (0) 99#define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1) 100#define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1) 101#define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1) 102#define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1) 103#define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1) 104#define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1) 105 106#define DBGLVL_FW 4 107#define DBGLVL_DVB 8 108#define DBGLVL_I2C 16 109#define DBGLVL_API 32 110#define DBGLVL_CMD 64 111#define DBGLVL_BUS 128 112#define DBGLVL_IRQ 256 113#define DBGLVL_BUF 512 114#define DBGLVL_ENC 1024 115#define DBGLVL_VBI 2048 116#define DBGLVL_THR 4096 117#define DBGLVL_CPU 8192 118 119#define SAA7164_NORMS \ 120 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP) 121 122/* TV frequency range copied from tuner-core.c */ 123#define SAA7164_TV_MIN_FREQ (44U * 16U) 124#define SAA7164_TV_MAX_FREQ (958U * 16U) 125 126enum port_t { 127 SAA7164_MPEG_UNDEFINED = 0, 128 SAA7164_MPEG_DVB, 129 SAA7164_MPEG_ENCODER, 130 SAA7164_MPEG_VBI, 131}; 132 133enum saa7164_i2c_bus_nr { 134 SAA7164_I2C_BUS_0 = 0, 135 SAA7164_I2C_BUS_1, 136 SAA7164_I2C_BUS_2, 137}; 138 139enum saa7164_buffer_flags { 140 SAA7164_BUFFER_UNDEFINED = 0, 141 SAA7164_BUFFER_FREE, 142 SAA7164_BUFFER_BUSY, 143 SAA7164_BUFFER_FULL 144}; 145 146enum saa7164_unit_type { 147 SAA7164_UNIT_UNDEFINED = 0, 148 SAA7164_UNIT_DIGITAL_DEMODULATOR, 149 SAA7164_UNIT_ANALOG_DEMODULATOR, 150 SAA7164_UNIT_TUNER, 151 SAA7164_UNIT_EEPROM, 152 SAA7164_UNIT_ZILOG_IRBLASTER, 153 SAA7164_UNIT_ENCODER, 154}; 155 156/* The PCIe bridge doesn't grant direct access to i2c. 157 * Instead, you address i2c devices using a uniqely 158 * allocated 'unitid' value via a messaging API. This 159 * is a problem. The kernel and existing demod/tuner 160 * drivers expect to talk 'i2c', so we have to maintain 161 * a translation layer, and a series of functions to 162 * convert i2c bus + device address into a unit id. 163 */ 164struct saa7164_unit { 165 enum saa7164_unit_type type; 166 u8 id; 167 char *name; 168 enum saa7164_i2c_bus_nr i2c_bus_nr; 169 u8 i2c_bus_addr; 170 u8 i2c_reg_len; 171}; 172 173struct saa7164_board { 174 char *name; 175 enum port_t porta, portb, portc, 176 portd, porte, portf; 177 enum { 178 SAA7164_CHIP_UNDEFINED = 0, 179 SAA7164_CHIP_REV2, 180 SAA7164_CHIP_REV3, 181 } chiprev; 182 struct saa7164_unit unit[SAA7164_MAX_UNITS]; 183}; 184 185struct saa7164_subid { 186 u16 subvendor; 187 u16 subdevice; 188 u32 card; 189}; 190 191struct saa7164_encoder_fh { 192 struct v4l2_fh fh; 193 struct saa7164_port *port; 194 atomic_t v4l_reading; 195}; 196 197struct saa7164_vbi_fh { 198 struct v4l2_fh fh; 199 struct saa7164_port *port; 200 atomic_t v4l_reading; 201}; 202 203struct saa7164_histogram_bucket { 204 u32 val; 205 u32 count; 206 u64 update_time; 207}; 208 209struct saa7164_histogram { 210 char name[32]; 211 struct saa7164_histogram_bucket counter1[64]; 212}; 213 214struct saa7164_user_buffer { 215 struct list_head list; 216 217 /* Attributes */ 218 u8 *data; 219 u32 pos; 220 u32 actual_size; 221 222 u32 crc; 223}; 224 225struct saa7164_fw_status { 226 227 /* RISC Core details */ 228 u32 status; 229 u32 mode; 230 u32 spec; 231 u32 inst; 232 u32 cpuload; 233 u32 remainheap; 234 235 /* Firmware version */ 236 u32 version; 237 u32 major; 238 u32 sub; 239 u32 rel; 240 u32 buildnr; 241}; 242 243struct saa7164_dvb { 244 struct mutex lock; 245 struct dvb_adapter adapter; 246 struct dvb_frontend *frontend; 247 struct dvb_demux demux; 248 struct dmxdev dmxdev; 249 struct dmx_frontend fe_hw; 250 struct dmx_frontend fe_mem; 251 struct dvb_net net; 252 int feeding; 253}; 254 255struct saa7164_i2c { 256 struct saa7164_dev *dev; 257 258 enum saa7164_i2c_bus_nr nr; 259 260 /* I2C I/O */ 261 struct i2c_adapter i2c_adap; 262 struct i2c_client i2c_client; 263 u32 i2c_rc; 264}; 265 266struct saa7164_ctrl { 267 struct v4l2_queryctrl v; 268}; 269 270struct saa7164_tvnorm { 271 char *name; 272 v4l2_std_id id; 273}; 274 275struct saa7164_encoder_params { 276 struct saa7164_tvnorm encodernorm; 277 u32 height; 278 u32 width; 279 u32 is_50hz; 280 u32 bitrate; /* bps */ 281 u32 bitrate_peak; /* bps */ 282 u32 bitrate_mode; 283 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 284 285 u32 audio_sampling_freq; 286 u32 ctl_mute; 287 u32 ctl_aspect; 288 u32 refdist; 289 u32 gop_size; 290}; 291 292struct saa7164_vbi_params { 293 struct saa7164_tvnorm encodernorm; 294 u32 height; 295 u32 width; 296 u32 is_50hz; 297 u32 bitrate; /* bps */ 298 u32 bitrate_peak; /* bps */ 299 u32 bitrate_mode; 300 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 301 302 u32 audio_sampling_freq; 303 u32 ctl_mute; 304 u32 ctl_aspect; 305 u32 refdist; 306 u32 gop_size; 307}; 308 309struct saa7164_port; 310 311struct saa7164_buffer { 312 struct list_head list; 313 314 /* Note of which h/w buffer list index position we occupy */ 315 int idx; 316 317 struct saa7164_port *port; 318 319 /* Hardware Specific */ 320 /* PCI Memory allocations */ 321 enum saa7164_buffer_flags flags; /* Free, Busy, Full */ 322 323 /* A block of page align PCI memory */ 324 u32 pci_size; /* PCI allocation size in bytes */ 325 u64 *cpu; /* Virtual address */ 326 dma_addr_t dma; /* Physical address */ 327 u32 crc; /* Checksum for the entire buffer data */ 328 329 /* A page table that splits the block into a number of entries */ 330 u32 pt_size; /* PCI allocation size in bytes */ 331 u64 *pt_cpu; /* Virtual address */ 332 dma_addr_t pt_dma; /* Physical address */ 333 334 /* Encoder fops */ 335 u32 pos; 336 u32 actual_size; 337}; 338 339struct saa7164_port { 340 341 struct saa7164_dev *dev; 342 enum port_t type; 343 int nr; 344 345 /* --- Generic port attributes --- */ 346 347 /* HW stream parameters */ 348 struct tmHWStreamParameters hw_streamingparams; 349 350 /* DMA configuration values, is seeded during initialization */ 351 struct tmComResDMATermDescrHeader hwcfg; 352 353 /* hardware specific registers */ 354 u32 bufcounter; 355 u32 pitch; 356 u32 bufsize; 357 u32 bufoffset; 358 u32 bufptr32l; 359 u32 bufptr32h; 360 u64 bufptr64; 361 362 u32 numpte; /* Number of entries in array, only valid in head */ 363 364 struct mutex dmaqueue_lock; 365 struct saa7164_buffer dmaqueue; 366 367 u64 last_irq_msecs, last_svc_msecs; 368 u64 last_irq_msecs_diff, last_svc_msecs_diff; 369 u32 last_svc_wp; 370 u32 last_svc_rp; 371 u64 last_irq_svc_msecs_diff; 372 u64 last_read_msecs, last_read_msecs_diff; 373 u64 last_poll_msecs, last_poll_msecs_diff; 374 375 struct saa7164_histogram irq_interval; 376 struct saa7164_histogram svc_interval; 377 struct saa7164_histogram irq_svc_interval; 378 struct saa7164_histogram read_interval; 379 struct saa7164_histogram poll_interval; 380 381 /* --- DVB Transport Specific --- */ 382 struct saa7164_dvb dvb; 383 struct i2c_client *i2c_client_demod; 384 struct i2c_client *i2c_client_tuner; 385 386 /* --- Encoder/V4L related attributes --- */ 387 /* Encoder */ 388 /* Defaults established in saa7164-encoder.c */ 389 struct saa7164_tvnorm encodernorm; 390 struct v4l2_ctrl_handler ctrl_handler; 391 v4l2_std_id std; 392 u32 height; 393 u32 width; 394 u32 freq; 395 u8 mux_input; 396 u8 encoder_profile; 397 u8 video_format; 398 u8 audio_format; 399 u8 video_resolution; 400 u16 ctl_brightness; 401 u16 ctl_contrast; 402 u16 ctl_hue; 403 u16 ctl_saturation; 404 u16 ctl_sharpness; 405 s8 ctl_volume; 406 407 struct tmComResAFeatureDescrHeader audfeat; 408 struct tmComResEncoderDescrHeader encunit; 409 struct tmComResProcDescrHeader vidproc; 410 struct tmComResExtDevDescrHeader ifunit; 411 struct tmComResTunerDescrHeader tunerunit; 412 413 struct work_struct workenc; 414 415 /* V4L Encoder Video */ 416 struct saa7164_encoder_params encoder_params; 417 struct video_device *v4l_device; 418 atomic_t v4l_reader_count; 419 420 struct saa7164_buffer list_buf_used; 421 struct saa7164_buffer list_buf_free; 422 wait_queue_head_t wait_read; 423 424 /* V4L VBI */ 425 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc; 426 struct saa7164_vbi_params vbi_params; 427 struct saa7164_port *enc_port; 428 429 /* Debug */ 430 u32 sync_errors; 431 u32 v_cc_errors; 432 u32 a_cc_errors; 433 u8 last_v_cc; 434 u8 last_a_cc; 435 u32 done_first_interrupt; 436}; 437 438struct saa7164_dev { 439 struct list_head devlist; 440 atomic_t refcount; 441 442 struct v4l2_device v4l2_dev; 443 444 /* pci stuff */ 445 struct pci_dev *pci; 446 unsigned char pci_rev, pci_lat; 447 int pci_bus, pci_slot; 448 u32 __iomem *lmmio; 449 u8 __iomem *bmmio; 450 u32 __iomem *lmmio2; 451 u8 __iomem *bmmio2; 452 int pci_irqmask; 453 454 /* board details */ 455 int nr; 456 int hwrevision; 457 u32 board; 458 char name[16]; 459 460 /* firmware status */ 461 struct saa7164_fw_status fw_status; 462 u32 firmwareloaded; 463 464 struct tmComResHWDescr hwdesc; 465 struct tmComResInterfaceDescr intfdesc; 466 struct tmComResBusDescr busdesc; 467 468 struct tmComResBusInfo bus; 469 470 /* Interrupt status and ack registers */ 471 u32 int_status; 472 u32 int_ack; 473 bool msi; 474 475 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS]; 476 struct mutex lock; 477 478 /* I2c related */ 479 struct saa7164_i2c i2c_bus[3]; 480 481 /* Transport related */ 482 struct saa7164_port ports[SAA7164_MAX_PORTS]; 483 484 /* Deferred command/api interrupts handling */ 485 struct work_struct workcmd; 486 487 /* A kernel thread to monitor the firmware log, used 488 * only in debug mode. 489 */ 490 struct task_struct *kthread; 491 492}; 493 494extern struct list_head saa7164_devlist; 495extern unsigned int waitsecs; 496extern unsigned int encoder_buffers; 497extern unsigned int vbi_buffers; 498 499/* ----------------------------------------------------------- */ 500/* saa7164-core.c */ 501void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr); 502void saa7164_getfirmwarestatus(struct saa7164_dev *dev); 503u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev); 504void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val); 505 506/* ----------------------------------------------------------- */ 507/* saa7164-fw.c */ 508int saa7164_downloadfirmware(struct saa7164_dev *dev); 509 510/* ----------------------------------------------------------- */ 511/* saa7164-i2c.c */ 512extern int saa7164_i2c_register(struct saa7164_i2c *bus); 513extern int saa7164_i2c_unregister(struct saa7164_i2c *bus); 514extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus, 515 unsigned int cmd, void *arg); 516 517/* ----------------------------------------------------------- */ 518/* saa7164-bus.c */ 519int saa7164_bus_setup(struct saa7164_dev *dev); 520void saa7164_bus_dump(struct saa7164_dev *dev); 521int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg, 522 void *buf); 523int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg, 524 void *buf, int peekonly); 525 526/* ----------------------------------------------------------- */ 527/* saa7164-cmd.c */ 528int saa7164_cmd_send(struct saa7164_dev *dev, 529 u8 id, enum tmComResCmd command, u16 controlselector, 530 u16 size, void *buf); 531void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno); 532int saa7164_irq_dequeue(struct saa7164_dev *dev); 533 534/* ----------------------------------------------------------- */ 535/* saa7164-api.c */ 536int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version); 537int saa7164_api_enum_subdevs(struct saa7164_dev *dev); 538int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg, 539 u32 datalen, u8 *data); 540int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr, 541 u32 datalen, u8 *data); 542int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr, 543 u32 datalen, u8 *data); 544int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen); 545int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 546int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 547int saa7164_api_transition_port(struct saa7164_port *port, u8 mode); 548int saa7164_api_initialize_dif(struct saa7164_port *port); 549int saa7164_api_configure_dif(struct saa7164_port *port, u32 std); 550int saa7164_api_set_encoder(struct saa7164_port *port); 551int saa7164_api_get_encoder(struct saa7164_port *port); 552int saa7164_api_set_aspect_ratio(struct saa7164_port *port); 553int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl); 554int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl); 555int saa7164_api_set_videomux(struct saa7164_port *port); 556int saa7164_api_audio_mute(struct saa7164_port *port, int mute); 557int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level); 558int saa7164_api_set_audio_std(struct saa7164_port *port); 559int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect); 560int saa7164_api_get_videomux(struct saa7164_port *port); 561int saa7164_api_set_vbi_format(struct saa7164_port *port); 562int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level); 563int saa7164_api_collect_debug(struct saa7164_dev *dev); 564int saa7164_api_get_load_info(struct saa7164_dev *dev, 565 struct tmFwInfoStruct *i); 566 567/* ----------------------------------------------------------- */ 568/* saa7164-cards.c */ 569extern struct saa7164_board saa7164_boards[]; 570extern const unsigned int saa7164_bcount; 571 572extern struct saa7164_subid saa7164_subids[]; 573extern const unsigned int saa7164_idcount; 574 575extern void saa7164_card_list(struct saa7164_dev *dev); 576extern void saa7164_gpio_setup(struct saa7164_dev *dev); 577extern void saa7164_card_setup(struct saa7164_dev *dev); 578 579extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr); 580extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr); 581extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid); 582 583/* ----------------------------------------------------------- */ 584/* saa7164-dvb.c */ 585extern int saa7164_dvb_register(struct saa7164_port *port); 586extern int saa7164_dvb_unregister(struct saa7164_port *port); 587 588/* ----------------------------------------------------------- */ 589/* saa7164-buffer.c */ 590extern struct saa7164_buffer *saa7164_buffer_alloc( 591 struct saa7164_port *port, u32 len); 592extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf); 593extern void saa7164_buffer_display(struct saa7164_buffer *buf); 594extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i); 595extern int saa7164_buffer_cfg_port(struct saa7164_port *port); 596extern struct saa7164_user_buffer *saa7164_buffer_alloc_user( 597 struct saa7164_dev *dev, u32 len); 598extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf); 599extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i); 600 601/* ----------------------------------------------------------- */ 602/* saa7164-encoder.c */ 603int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id); 604int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id); 605int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i); 606int saa7164_g_input(struct saa7164_port *port, unsigned int *i); 607int saa7164_s_input(struct saa7164_port *port, unsigned int i); 608int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t); 609int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t); 610int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f); 611int saa7164_s_frequency(struct saa7164_port *port, 612 const struct v4l2_frequency *f); 613int saa7164_encoder_register(struct saa7164_port *port); 614void saa7164_encoder_unregister(struct saa7164_port *port); 615 616/* ----------------------------------------------------------- */ 617/* saa7164-vbi.c */ 618int saa7164_vbi_register(struct saa7164_port *port); 619void saa7164_vbi_unregister(struct saa7164_port *port); 620 621/* ----------------------------------------------------------- */ 622 623extern unsigned int crc_checking; 624 625extern unsigned int saa_debug; 626#define dprintk(level, fmt, arg...)\ 627 do { if (saa_debug & level)\ 628 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\ 629 } while (0) 630 631#define log_warn(fmt, arg...)\ 632 do { \ 633 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\ 634 } while (0) 635 636#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 637#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 638 639#define saa7164_readb(reg) readl(dev->bmmio + (reg)) 640#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg)) 641 642