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0001 /* SPDX-License-Identifier: GPL-2.0-or-later */
0002 /*
0003  *  Driver for the NXP SAA7164 PCIe bridge
0004  *
0005  *  Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
0006  */
0007 
0008 /*
0009     Driver architecture
0010     *******************
0011 
0012     saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c
0013         |   : Standard Linux driver framework for creating
0014         |   : exposing and managing interfaces to the rest
0015         |   : of the kernel or userland. Also uses _fw.c to load
0016         |   : firmware direct into the PCIe bus, bypassing layers.
0017         V
0018     saa7164_api..() : Translate kernel specific functions/features
0019         |   : into command buffers.
0020         V
0021     saa7164_cmd..() : Manages the flow of command packets on/off,
0022         |   : the bus. Deal with bus errors, timeouts etc.
0023         V
0024     saa7164_bus..() : Manage a read/write memory ring buffer in the
0025         |   : PCIe Address space.
0026         |
0027         |       saa7164_fw...() : Load any firmware
0028         |           |   : direct into the device
0029         V           V
0030     <- ----------------- PCIe address space -------------------- ->
0031 */
0032 
0033 #include <linux/pci.h>
0034 #include <linux/i2c.h>
0035 #include <linux/kdev_t.h>
0036 #include <linux/mutex.h>
0037 #include <linux/crc32.h>
0038 #include <linux/kthread.h>
0039 #include <linux/freezer.h>
0040 
0041 #include <media/tuner.h>
0042 #include <media/tveeprom.h>
0043 #include <media/dvb_demux.h>
0044 #include <media/dvb_frontend.h>
0045 #include <media/dvb_net.h>
0046 #include <media/dvbdev.h>
0047 #include <media/dmxdev.h>
0048 #include <media/v4l2-common.h>
0049 #include <media/v4l2-ioctl.h>
0050 #include <media/v4l2-device.h>
0051 #include <media/v4l2-ctrls.h>
0052 #include <media/v4l2-event.h>
0053 
0054 #include "saa7164-reg.h"
0055 #include "saa7164-types.h"
0056 
0057 #define SAA7164_MAXBOARDS 8
0058 
0059 #define UNSET (-1U)
0060 #define SAA7164_BOARD_NOAUTO            UNSET
0061 #define SAA7164_BOARD_UNKNOWN           0
0062 #define SAA7164_BOARD_UNKNOWN_REV2      1
0063 #define SAA7164_BOARD_UNKNOWN_REV3      2
0064 #define SAA7164_BOARD_HAUPPAUGE_HVR2250     3
0065 #define SAA7164_BOARD_HAUPPAUGE_HVR2200     4
0066 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2   5
0067 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3   6
0068 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2   7
0069 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3   8
0070 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4   9
0071 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5   10
0072 #define SAA7164_BOARD_HAUPPAUGE_HVR2255proto    11
0073 #define SAA7164_BOARD_HAUPPAUGE_HVR2255     12
0074 #define SAA7164_BOARD_HAUPPAUGE_HVR2205     13
0075 
0076 #define SAA7164_MAX_UNITS       8
0077 #define SAA7164_TS_NUMBER_OF_LINES  312
0078 #define SAA7164_PS_NUMBER_OF_LINES  256
0079 #define SAA7164_PT_ENTRIES      16 /* (312 * 188) / 4096 */
0080 #define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */
0081 #define SAA7164_MAX_VBI_BUFFERS     64
0082 
0083 /* Port related defines */
0084 #define SAA7164_PORT_TS1    (0)
0085 #define SAA7164_PORT_TS2    (SAA7164_PORT_TS1 + 1)
0086 #define SAA7164_PORT_ENC1   (SAA7164_PORT_TS2 + 1)
0087 #define SAA7164_PORT_ENC2   (SAA7164_PORT_ENC1 + 1)
0088 #define SAA7164_PORT_VBI1   (SAA7164_PORT_ENC2 + 1)
0089 #define SAA7164_PORT_VBI2   (SAA7164_PORT_VBI1 + 1)
0090 #define SAA7164_MAX_PORTS   (SAA7164_PORT_VBI2 + 1)
0091 
0092 #define DBGLVL_FW    4
0093 #define DBGLVL_DVB   8
0094 #define DBGLVL_I2C  16
0095 #define DBGLVL_API  32
0096 #define DBGLVL_CMD  64
0097 #define DBGLVL_BUS 128
0098 #define DBGLVL_IRQ 256
0099 #define DBGLVL_BUF 512
0100 #define DBGLVL_ENC 1024
0101 #define DBGLVL_VBI 2048
0102 #define DBGLVL_THR 4096
0103 #define DBGLVL_CPU 8192
0104 
0105 #define SAA7164_NORMS \
0106     (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)
0107 
0108 /* TV frequency range copied from tuner-core.c */
0109 #define SAA7164_TV_MIN_FREQ (44U * 16U)
0110 #define SAA7164_TV_MAX_FREQ (958U * 16U)
0111 
0112 enum port_t {
0113     SAA7164_MPEG_UNDEFINED = 0,
0114     SAA7164_MPEG_DVB,
0115     SAA7164_MPEG_ENCODER,
0116     SAA7164_MPEG_VBI,
0117 };
0118 
0119 enum saa7164_i2c_bus_nr {
0120     SAA7164_I2C_BUS_0 = 0,
0121     SAA7164_I2C_BUS_1,
0122     SAA7164_I2C_BUS_2,
0123 };
0124 
0125 enum saa7164_buffer_flags {
0126     SAA7164_BUFFER_UNDEFINED = 0,
0127     SAA7164_BUFFER_FREE,
0128     SAA7164_BUFFER_BUSY,
0129     SAA7164_BUFFER_FULL
0130 };
0131 
0132 enum saa7164_unit_type {
0133     SAA7164_UNIT_UNDEFINED = 0,
0134     SAA7164_UNIT_DIGITAL_DEMODULATOR,
0135     SAA7164_UNIT_ANALOG_DEMODULATOR,
0136     SAA7164_UNIT_TUNER,
0137     SAA7164_UNIT_EEPROM,
0138     SAA7164_UNIT_ZILOG_IRBLASTER,
0139     SAA7164_UNIT_ENCODER,
0140 };
0141 
0142 /* The PCIe bridge doesn't grant direct access to i2c.
0143  * Instead, you address i2c devices using a uniqely
0144  * allocated 'unitid' value via a messaging API. This
0145  * is a problem. The kernel and existing demod/tuner
0146  * drivers expect to talk 'i2c', so we have to maintain
0147  * a translation layer, and a series of functions to
0148  * convert i2c bus + device address into a unit id.
0149  */
0150 struct saa7164_unit {
0151     enum saa7164_unit_type type;
0152     u8  id;
0153     char    *name;
0154     enum saa7164_i2c_bus_nr i2c_bus_nr;
0155     u8  i2c_bus_addr;
0156     u8  i2c_reg_len;
0157 };
0158 
0159 struct saa7164_board {
0160     char    *name;
0161     enum port_t porta, portb, portc,
0162         portd, porte, portf;
0163     enum {
0164         SAA7164_CHIP_UNDEFINED = 0,
0165         SAA7164_CHIP_REV2,
0166         SAA7164_CHIP_REV3,
0167     } chiprev;
0168     struct  saa7164_unit unit[SAA7164_MAX_UNITS];
0169 };
0170 
0171 struct saa7164_subid {
0172     u16     subvendor;
0173     u16     subdevice;
0174     u32     card;
0175 };
0176 
0177 struct saa7164_encoder_fh {
0178     struct v4l2_fh fh;
0179     struct saa7164_port *port;
0180     atomic_t v4l_reading;
0181 };
0182 
0183 struct saa7164_vbi_fh {
0184     struct v4l2_fh fh;
0185     struct saa7164_port *port;
0186     atomic_t v4l_reading;
0187 };
0188 
0189 struct saa7164_histogram_bucket {
0190     u32 val;
0191     u32 count;
0192     u64 update_time;
0193 };
0194 
0195 struct saa7164_histogram {
0196     char name[32];
0197     struct saa7164_histogram_bucket counter1[64];
0198 };
0199 
0200 struct saa7164_user_buffer {
0201     struct list_head list;
0202 
0203     /* Attributes */
0204     u8  *data;
0205     u32 pos;
0206     u32 actual_size;
0207 
0208     u32 crc;
0209 };
0210 
0211 struct saa7164_fw_status {
0212 
0213     /* RISC Core details */
0214     u32 status;
0215     u32 mode;
0216     u32 spec;
0217     u32 inst;
0218     u32 cpuload;
0219     u32 remainheap;
0220 
0221     /* Firmware version */
0222     u32 version;
0223     u32 major;
0224     u32 sub;
0225     u32 rel;
0226     u32 buildnr;
0227 };
0228 
0229 struct saa7164_dvb {
0230     struct mutex lock;
0231     struct dvb_adapter adapter;
0232     struct dvb_frontend *frontend;
0233     struct dvb_demux demux;
0234     struct dmxdev dmxdev;
0235     struct dmx_frontend fe_hw;
0236     struct dmx_frontend fe_mem;
0237     struct dvb_net net;
0238     int feeding;
0239 };
0240 
0241 struct saa7164_i2c {
0242     struct saa7164_dev      *dev;
0243 
0244     enum saa7164_i2c_bus_nr     nr;
0245 
0246     /* I2C I/O */
0247     struct i2c_adapter      i2c_adap;
0248     struct i2c_client       i2c_client;
0249     u32             i2c_rc;
0250 };
0251 
0252 struct saa7164_tvnorm {
0253     char        *name;
0254     v4l2_std_id id;
0255 };
0256 
0257 struct saa7164_encoder_params {
0258     struct saa7164_tvnorm encodernorm;
0259     u32 height;
0260     u32 width;
0261     u32 is_50hz;
0262     u32 bitrate; /* bps */
0263     u32 bitrate_peak; /* bps */
0264     u32 bitrate_mode;
0265     u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
0266 
0267     u32 audio_sampling_freq;
0268     u32 ctl_mute;
0269     u32 ctl_aspect;
0270     u32 refdist;
0271     u32 gop_size;
0272 };
0273 
0274 struct saa7164_vbi_params {
0275     struct saa7164_tvnorm encodernorm;
0276     u32 height;
0277     u32 width;
0278     u32 is_50hz;
0279     u32 bitrate; /* bps */
0280     u32 bitrate_peak; /* bps */
0281     u32 bitrate_mode;
0282     u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
0283 
0284     u32 audio_sampling_freq;
0285     u32 ctl_mute;
0286     u32 ctl_aspect;
0287     u32 refdist;
0288     u32 gop_size;
0289 };
0290 
0291 struct saa7164_port;
0292 
0293 struct saa7164_buffer {
0294     struct list_head list;
0295 
0296     /* Note of which h/w buffer list index position we occupy */
0297     int idx;
0298 
0299     struct saa7164_port *port;
0300 
0301     /* Hardware Specific */
0302     /* PCI Memory allocations */
0303     enum saa7164_buffer_flags flags; /* Free, Busy, Full */
0304 
0305     /* A block of page align PCI memory */
0306     u32 pci_size;   /* PCI allocation size in bytes */
0307     u64 *cpu;   /* Virtual address */
0308     dma_addr_t dma; /* Physical address */
0309     u32 crc;    /* Checksum for the entire buffer data */
0310 
0311     /* A page table that splits the block into a number of entries */
0312     u32 pt_size;        /* PCI allocation size in bytes */
0313     u64 *pt_cpu;        /* Virtual address */
0314     dma_addr_t pt_dma;  /* Physical address */
0315 
0316     /* Encoder fops */
0317     u32 pos;
0318     u32 actual_size;
0319 };
0320 
0321 struct saa7164_port {
0322 
0323     struct saa7164_dev *dev;
0324     enum port_t type;
0325     int nr;
0326 
0327     /* --- Generic port attributes --- */
0328 
0329     /* HW stream parameters */
0330     struct tmHWStreamParameters hw_streamingparams;
0331 
0332     /* DMA configuration values, is seeded during initialization */
0333     struct tmComResDMATermDescrHeader hwcfg;
0334 
0335     /* hardware specific registers */
0336     u32 bufcounter;
0337     u32 pitch;
0338     u32 bufsize;
0339     u32 bufoffset;
0340     u32 bufptr32l;
0341     u32 bufptr32h;
0342     u64 bufptr64;
0343 
0344     u32 numpte; /* Number of entries in array, only valid in head */
0345 
0346     struct mutex dmaqueue_lock;
0347     struct saa7164_buffer dmaqueue;
0348 
0349     u64 last_irq_msecs, last_svc_msecs;
0350     u64 last_irq_msecs_diff, last_svc_msecs_diff;
0351     u32 last_svc_wp;
0352     u32 last_svc_rp;
0353     u64 last_irq_svc_msecs_diff;
0354     u64 last_read_msecs, last_read_msecs_diff;
0355     u64 last_poll_msecs, last_poll_msecs_diff;
0356 
0357     struct saa7164_histogram irq_interval;
0358     struct saa7164_histogram svc_interval;
0359     struct saa7164_histogram irq_svc_interval;
0360     struct saa7164_histogram read_interval;
0361     struct saa7164_histogram poll_interval;
0362 
0363     /* --- DVB Transport Specific --- */
0364     struct saa7164_dvb dvb;
0365     struct i2c_client *i2c_client_demod;
0366     struct i2c_client *i2c_client_tuner;
0367 
0368     /* --- Encoder/V4L related attributes --- */
0369     /* Encoder */
0370     /* Defaults established in saa7164-encoder.c */
0371     struct saa7164_tvnorm encodernorm;
0372     struct v4l2_ctrl_handler ctrl_handler;
0373     v4l2_std_id std;
0374     u32 height;
0375     u32 width;
0376     u32 freq;
0377     u8 mux_input;
0378     u8 encoder_profile;
0379     u8 video_format;
0380     u8 audio_format;
0381     u8 video_resolution;
0382     u16 ctl_brightness;
0383     u16 ctl_contrast;
0384     u16 ctl_hue;
0385     u16 ctl_saturation;
0386     u16 ctl_sharpness;
0387     s8 ctl_volume;
0388 
0389     struct tmComResAFeatureDescrHeader audfeat;
0390     struct tmComResEncoderDescrHeader encunit;
0391     struct tmComResProcDescrHeader vidproc;
0392     struct tmComResExtDevDescrHeader ifunit;
0393     struct tmComResTunerDescrHeader tunerunit;
0394 
0395     struct work_struct workenc;
0396 
0397     /* V4L Encoder Video */
0398     struct saa7164_encoder_params encoder_params;
0399     struct video_device *v4l_device;
0400     atomic_t v4l_reader_count;
0401 
0402     struct saa7164_buffer list_buf_used;
0403     struct saa7164_buffer list_buf_free;
0404     wait_queue_head_t wait_read;
0405 
0406     /* V4L VBI */
0407     struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
0408     struct saa7164_vbi_params vbi_params;
0409     struct saa7164_port *enc_port;
0410 
0411     /* Debug */
0412     u32 sync_errors;
0413     u32 v_cc_errors;
0414     u32 a_cc_errors;
0415     u8 last_v_cc;
0416     u8 last_a_cc;
0417     u32 done_first_interrupt;
0418 };
0419 
0420 struct saa7164_dev {
0421     struct list_head    devlist;
0422     atomic_t        refcount;
0423 
0424     struct v4l2_device v4l2_dev;
0425 
0426     /* pci stuff */
0427     struct pci_dev  *pci;
0428     unsigned char   pci_rev, pci_lat;
0429     int     pci_bus, pci_slot;
0430     u32     __iomem *lmmio;
0431     u8      __iomem *bmmio;
0432     u32     __iomem *lmmio2;
0433     u8      __iomem *bmmio2;
0434     int     pci_irqmask;
0435 
0436     /* board details */
0437     int nr;
0438     int hwrevision;
0439     u32 board;
0440     char    name[16];
0441 
0442     /* firmware status */
0443     struct saa7164_fw_status    fw_status;
0444     u32             firmwareloaded;
0445 
0446     struct tmComResHWDescr      hwdesc;
0447     struct tmComResInterfaceDescr   intfdesc;
0448     struct tmComResBusDescr     busdesc;
0449 
0450     struct tmComResBusInfo      bus;
0451 
0452     /* Interrupt status and ack registers */
0453     u32 int_status;
0454     u32 int_ack;
0455     bool msi;
0456 
0457     struct cmd          cmds[SAA_CMD_MAX_MSG_UNITS];
0458     struct mutex            lock;
0459 
0460     /* I2c related */
0461     struct saa7164_i2c i2c_bus[3];
0462 
0463     /* Transport related */
0464     struct saa7164_port ports[SAA7164_MAX_PORTS];
0465 
0466     /* Deferred command/api interrupts handling */
0467     struct work_struct workcmd;
0468 
0469     /* A kernel thread to monitor the firmware log, used
0470      * only in debug mode.
0471      */
0472     struct task_struct *kthread;
0473 
0474 };
0475 
0476 extern struct list_head saa7164_devlist;
0477 extern unsigned int waitsecs;
0478 extern unsigned int encoder_buffers;
0479 extern unsigned int vbi_buffers;
0480 
0481 /* ----------------------------------------------------------- */
0482 /* saa7164-core.c                                              */
0483 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
0484 void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
0485 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
0486 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
0487 
0488 /* ----------------------------------------------------------- */
0489 /* saa7164-fw.c                                                */
0490 int saa7164_downloadfirmware(struct saa7164_dev *dev);
0491 
0492 /* ----------------------------------------------------------- */
0493 /* saa7164-i2c.c                                               */
0494 extern int saa7164_i2c_register(struct saa7164_i2c *bus);
0495 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
0496 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
0497     unsigned int cmd, void *arg);
0498 
0499 /* ----------------------------------------------------------- */
0500 /* saa7164-bus.c                                               */
0501 int saa7164_bus_setup(struct saa7164_dev *dev);
0502 void saa7164_bus_dump(struct saa7164_dev *dev);
0503 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
0504     void *buf);
0505 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
0506     void *buf, int peekonly);
0507 
0508 /* ----------------------------------------------------------- */
0509 /* saa7164-cmd.c                                               */
0510 int saa7164_cmd_send(struct saa7164_dev *dev,
0511     u8 id, enum tmComResCmd command, u16 controlselector,
0512     u16 size, void *buf);
0513 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
0514 int saa7164_irq_dequeue(struct saa7164_dev *dev);
0515 
0516 /* ----------------------------------------------------------- */
0517 /* saa7164-api.c                                               */
0518 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
0519 int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
0520 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
0521     u32 datalen, u8 *data);
0522 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
0523     u32 datalen, u8 *data);
0524 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
0525     u32 datalen, u8 *data);
0526 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
0527 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
0528 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
0529 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
0530 int saa7164_api_initialize_dif(struct saa7164_port *port);
0531 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
0532 int saa7164_api_set_encoder(struct saa7164_port *port);
0533 int saa7164_api_get_encoder(struct saa7164_port *port);
0534 int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
0535 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
0536 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
0537 int saa7164_api_set_videomux(struct saa7164_port *port);
0538 int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
0539 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
0540 int saa7164_api_set_audio_std(struct saa7164_port *port);
0541 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
0542 int saa7164_api_get_videomux(struct saa7164_port *port);
0543 int saa7164_api_set_vbi_format(struct saa7164_port *port);
0544 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
0545 int saa7164_api_collect_debug(struct saa7164_dev *dev);
0546 int saa7164_api_get_load_info(struct saa7164_dev *dev,
0547     struct tmFwInfoStruct *i);
0548 
0549 /* ----------------------------------------------------------- */
0550 /* saa7164-cards.c                                             */
0551 extern struct saa7164_board saa7164_boards[];
0552 extern const unsigned int saa7164_bcount;
0553 
0554 extern struct saa7164_subid saa7164_subids[];
0555 extern const unsigned int saa7164_idcount;
0556 
0557 extern void saa7164_card_list(struct saa7164_dev *dev);
0558 extern void saa7164_gpio_setup(struct saa7164_dev *dev);
0559 extern void saa7164_card_setup(struct saa7164_dev *dev);
0560 
0561 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
0562 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
0563 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
0564 
0565 /* ----------------------------------------------------------- */
0566 /* saa7164-dvb.c                                               */
0567 extern int saa7164_dvb_register(struct saa7164_port *port);
0568 extern int saa7164_dvb_unregister(struct saa7164_port *port);
0569 
0570 /* ----------------------------------------------------------- */
0571 /* saa7164-buffer.c                                            */
0572 extern struct saa7164_buffer *saa7164_buffer_alloc(
0573     struct saa7164_port *port, u32 len);
0574 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
0575 extern void saa7164_buffer_display(struct saa7164_buffer *buf);
0576 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
0577 extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
0578 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
0579     struct saa7164_dev *dev, u32 len);
0580 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
0581 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
0582 
0583 /* ----------------------------------------------------------- */
0584 /* saa7164-encoder.c                                            */
0585 int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
0586 int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
0587 int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
0588 int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
0589 int saa7164_s_input(struct saa7164_port *port, unsigned int i);
0590 int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
0591 int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
0592 int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
0593 int saa7164_s_frequency(struct saa7164_port *port,
0594             const struct v4l2_frequency *f);
0595 int saa7164_encoder_register(struct saa7164_port *port);
0596 void saa7164_encoder_unregister(struct saa7164_port *port);
0597 
0598 /* ----------------------------------------------------------- */
0599 /* saa7164-vbi.c                                            */
0600 int saa7164_vbi_register(struct saa7164_port *port);
0601 void saa7164_vbi_unregister(struct saa7164_port *port);
0602 
0603 /* ----------------------------------------------------------- */
0604 
0605 extern unsigned int crc_checking;
0606 
0607 extern unsigned int saa_debug;
0608 #define dprintk(level, fmt, arg...)\
0609     do { if (saa_debug & level)\
0610         printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
0611     } while (0)
0612 
0613 #define log_warn(fmt, arg...)\
0614     do { \
0615         printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
0616     } while (0)
0617 
0618 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
0619 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
0620 
0621 #define saa7164_readb(reg)             readl(dev->bmmio + (reg))
0622 #define saa7164_writeb(reg, value)     writel((value), dev->bmmio + (reg))
0623
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