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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Driver for the NXP SAA7164 PCIe bridge4 *5 * Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>6 */7 8/*9 Driver architecture10 *******************11 12 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c13 | : Standard Linux driver framework for creating14 | : exposing and managing interfaces to the rest15 | : of the kernel or userland. Also uses _fw.c to load16 | : firmware direct into the PCIe bus, bypassing layers.17 V18 saa7164_api..() : Translate kernel specific functions/features19 | : into command buffers.20 V21 saa7164_cmd..() : Manages the flow of command packets on/off,22 | : the bus. Deal with bus errors, timeouts etc.23 V24 saa7164_bus..() : Manage a read/write memory ring buffer in the25 | : PCIe Address space.26 |27 | saa7164_fw...() : Load any firmware28 | | : direct into the device29 V V30 <- ----------------- PCIe address space -------------------- ->31*/32 33#include <linux/pci.h>34#include <linux/i2c.h>35#include <linux/kdev_t.h>36#include <linux/mutex.h>37#include <linux/crc32.h>38#include <linux/kthread.h>39#include <linux/freezer.h>40 41#include <media/tuner.h>42#include <media/tveeprom.h>43#include <media/dvb_demux.h>44#include <media/dvb_frontend.h>45#include <media/dvb_net.h>46#include <media/dvbdev.h>47#include <media/dmxdev.h>48#include <media/v4l2-common.h>49#include <media/v4l2-ioctl.h>50#include <media/v4l2-device.h>51#include <media/v4l2-ctrls.h>52#include <media/v4l2-event.h>53 54#include "saa7164-reg.h"55#include "saa7164-types.h"56 57#define SAA7164_MAXBOARDS 858 59#define UNSET (-1U)60#define SAA7164_BOARD_NOAUTO UNSET61#define SAA7164_BOARD_UNKNOWN 062#define SAA7164_BOARD_UNKNOWN_REV2 163#define SAA7164_BOARD_UNKNOWN_REV3 264#define SAA7164_BOARD_HAUPPAUGE_HVR2250 365#define SAA7164_BOARD_HAUPPAUGE_HVR2200 466#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 567#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 668#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 769#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 870#define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 971#define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 1072#define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 1173#define SAA7164_BOARD_HAUPPAUGE_HVR2255 1274#define SAA7164_BOARD_HAUPPAUGE_HVR2205 1375 76#define SAA7164_MAX_UNITS 877#define SAA7164_TS_NUMBER_OF_LINES 31278#define SAA7164_PS_NUMBER_OF_LINES 25679#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */80#define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */81#define SAA7164_MAX_VBI_BUFFERS 6482 83/* Port related defines */84#define SAA7164_PORT_TS1 (0)85#define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1)86#define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1)87#define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1)88#define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1)89#define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1)90#define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1)91 92#define DBGLVL_FW 493#define DBGLVL_DVB 894#define DBGLVL_I2C 1695#define DBGLVL_API 3296#define DBGLVL_CMD 6497#define DBGLVL_BUS 12898#define DBGLVL_IRQ 25699#define DBGLVL_BUF 512100#define DBGLVL_ENC 1024101#define DBGLVL_VBI 2048102#define DBGLVL_THR 4096103#define DBGLVL_CPU 8192104 105#define SAA7164_NORMS \106 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP)107 108/* TV frequency range copied from tuner-core.c */109#define SAA7164_TV_MIN_FREQ (44U * 16U)110#define SAA7164_TV_MAX_FREQ (958U * 16U)111 112enum port_t {113 SAA7164_MPEG_UNDEFINED = 0,114 SAA7164_MPEG_DVB,115 SAA7164_MPEG_ENCODER,116 SAA7164_MPEG_VBI,117};118 119enum saa7164_i2c_bus_nr {120 SAA7164_I2C_BUS_0 = 0,121 SAA7164_I2C_BUS_1,122 SAA7164_I2C_BUS_2,123};124 125enum saa7164_buffer_flags {126 SAA7164_BUFFER_UNDEFINED = 0,127 SAA7164_BUFFER_FREE,128 SAA7164_BUFFER_BUSY,129 SAA7164_BUFFER_FULL130};131 132enum saa7164_unit_type {133 SAA7164_UNIT_UNDEFINED = 0,134 SAA7164_UNIT_DIGITAL_DEMODULATOR,135 SAA7164_UNIT_ANALOG_DEMODULATOR,136 SAA7164_UNIT_TUNER,137 SAA7164_UNIT_EEPROM,138 SAA7164_UNIT_ZILOG_IRBLASTER,139 SAA7164_UNIT_ENCODER,140};141 142/* The PCIe bridge doesn't grant direct access to i2c.143 * Instead, you address i2c devices using a uniqely144 * allocated 'unitid' value via a messaging API. This145 * is a problem. The kernel and existing demod/tuner146 * drivers expect to talk 'i2c', so we have to maintain147 * a translation layer, and a series of functions to148 * convert i2c bus + device address into a unit id.149 */150struct saa7164_unit {151 enum saa7164_unit_type type;152 u8 id;153 char *name;154 enum saa7164_i2c_bus_nr i2c_bus_nr;155 u8 i2c_bus_addr;156 u8 i2c_reg_len;157};158 159struct saa7164_board {160 char *name;161 enum port_t porta, portb, portc,162 portd, porte, portf;163 enum {164 SAA7164_CHIP_UNDEFINED = 0,165 SAA7164_CHIP_REV2,166 SAA7164_CHIP_REV3,167 } chiprev;168 struct saa7164_unit unit[SAA7164_MAX_UNITS];169};170 171struct saa7164_subid {172 u16 subvendor;173 u16 subdevice;174 u32 card;175};176 177struct saa7164_encoder_fh {178 struct v4l2_fh fh;179 struct saa7164_port *port;180 atomic_t v4l_reading;181};182 183struct saa7164_vbi_fh {184 struct v4l2_fh fh;185 struct saa7164_port *port;186 atomic_t v4l_reading;187};188 189struct saa7164_histogram_bucket {190 u32 val;191 u32 count;192 u64 update_time;193};194 195struct saa7164_histogram {196 char name[32];197 struct saa7164_histogram_bucket counter1[64];198};199 200struct saa7164_user_buffer {201 struct list_head list;202 203 /* Attributes */204 u8 *data;205 u32 pos;206 u32 actual_size;207 208 u32 crc;209};210 211struct saa7164_fw_status {212 213 /* RISC Core details */214 u32 status;215 u32 mode;216 u32 spec;217 u32 inst;218 u32 cpuload;219 u32 remainheap;220 221 /* Firmware version */222 u32 version;223 u32 major;224 u32 sub;225 u32 rel;226 u32 buildnr;227};228 229struct saa7164_dvb {230 struct mutex lock;231 struct dvb_adapter adapter;232 struct dvb_frontend *frontend;233 struct dvb_demux demux;234 struct dmxdev dmxdev;235 struct dmx_frontend fe_hw;236 struct dmx_frontend fe_mem;237 struct dvb_net net;238 int feeding;239};240 241struct saa7164_i2c {242 struct saa7164_dev *dev;243 244 enum saa7164_i2c_bus_nr nr;245 246 /* I2C I/O */247 struct i2c_adapter i2c_adap;248 struct i2c_client i2c_client;249 u32 i2c_rc;250};251 252struct saa7164_tvnorm {253 char *name;254 v4l2_std_id id;255};256 257struct saa7164_encoder_params {258 struct saa7164_tvnorm encodernorm;259 u32 height;260 u32 width;261 u32 is_50hz;262 u32 bitrate; /* bps */263 u32 bitrate_peak; /* bps */264 u32 bitrate_mode;265 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */266 267 u32 audio_sampling_freq;268 u32 ctl_mute;269 u32 ctl_aspect;270 u32 refdist;271 u32 gop_size;272};273 274struct saa7164_vbi_params {275 struct saa7164_tvnorm encodernorm;276 u32 height;277 u32 width;278 u32 is_50hz;279 u32 bitrate; /* bps */280 u32 bitrate_peak; /* bps */281 u32 bitrate_mode;282 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */283 284 u32 audio_sampling_freq;285 u32 ctl_mute;286 u32 ctl_aspect;287 u32 refdist;288 u32 gop_size;289};290 291struct saa7164_port;292 293struct saa7164_buffer {294 struct list_head list;295 296 /* Note of which h/w buffer list index position we occupy */297 int idx;298 299 struct saa7164_port *port;300 301 /* Hardware Specific */302 /* PCI Memory allocations */303 enum saa7164_buffer_flags flags; /* Free, Busy, Full */304 305 /* A block of page align PCI memory */306 u32 pci_size; /* PCI allocation size in bytes */307 u64 *cpu; /* Virtual address */308 dma_addr_t dma; /* Physical address */309 u32 crc; /* Checksum for the entire buffer data */310 311 /* A page table that splits the block into a number of entries */312 u32 pt_size; /* PCI allocation size in bytes */313 u64 *pt_cpu; /* Virtual address */314 dma_addr_t pt_dma; /* Physical address */315 316 /* Encoder fops */317 u32 pos;318 u32 actual_size;319};320 321struct saa7164_port {322 323 struct saa7164_dev *dev;324 enum port_t type;325 int nr;326 327 /* --- Generic port attributes --- */328 329 /* HW stream parameters */330 struct tmHWStreamParameters hw_streamingparams;331 332 /* DMA configuration values, is seeded during initialization */333 struct tmComResDMATermDescrHeader hwcfg;334 335 /* hardware specific registers */336 u32 bufcounter;337 u32 pitch;338 u32 bufsize;339 u32 bufoffset;340 u32 bufptr32l;341 u32 bufptr32h;342 u64 bufptr64;343 344 u32 numpte; /* Number of entries in array, only valid in head */345 346 struct mutex dmaqueue_lock;347 struct saa7164_buffer dmaqueue;348 349 u64 last_irq_msecs, last_svc_msecs;350 u64 last_irq_msecs_diff, last_svc_msecs_diff;351 u32 last_svc_wp;352 u32 last_svc_rp;353 u64 last_irq_svc_msecs_diff;354 u64 last_read_msecs, last_read_msecs_diff;355 u64 last_poll_msecs, last_poll_msecs_diff;356 357 struct saa7164_histogram irq_interval;358 struct saa7164_histogram svc_interval;359 struct saa7164_histogram irq_svc_interval;360 struct saa7164_histogram read_interval;361 struct saa7164_histogram poll_interval;362 363 /* --- DVB Transport Specific --- */364 struct saa7164_dvb dvb;365 struct i2c_client *i2c_client_demod;366 struct i2c_client *i2c_client_tuner;367 368 /* --- Encoder/V4L related attributes --- */369 /* Encoder */370 /* Defaults established in saa7164-encoder.c */371 struct saa7164_tvnorm encodernorm;372 struct v4l2_ctrl_handler ctrl_handler;373 v4l2_std_id std;374 u32 height;375 u32 width;376 u32 freq;377 u8 mux_input;378 u8 encoder_profile;379 u8 video_format;380 u8 audio_format;381 u8 video_resolution;382 u16 ctl_brightness;383 u16 ctl_contrast;384 u16 ctl_hue;385 u16 ctl_saturation;386 u16 ctl_sharpness;387 s8 ctl_volume;388 389 struct tmComResAFeatureDescrHeader audfeat;390 struct tmComResEncoderDescrHeader encunit;391 struct tmComResProcDescrHeader vidproc;392 struct tmComResExtDevDescrHeader ifunit;393 struct tmComResTunerDescrHeader tunerunit;394 395 struct work_struct workenc;396 397 /* V4L Encoder Video */398 struct saa7164_encoder_params encoder_params;399 struct video_device *v4l_device;400 atomic_t v4l_reader_count;401 402 struct saa7164_buffer list_buf_used;403 struct saa7164_buffer list_buf_free;404 wait_queue_head_t wait_read;405 406 /* V4L VBI */407 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;408 struct saa7164_vbi_params vbi_params;409 struct saa7164_port *enc_port;410 411 /* Debug */412 u32 sync_errors;413 u32 v_cc_errors;414 u32 a_cc_errors;415 u8 last_v_cc;416 u8 last_a_cc;417 u32 done_first_interrupt;418};419 420struct saa7164_dev {421 struct list_head devlist;422 atomic_t refcount;423 424 struct v4l2_device v4l2_dev;425 426 /* pci stuff */427 struct pci_dev *pci;428 unsigned char pci_rev, pci_lat;429 int pci_bus, pci_slot;430 u32 __iomem *lmmio;431 u8 __iomem *bmmio;432 u32 __iomem *lmmio2;433 u8 __iomem *bmmio2;434 int pci_irqmask;435 436 /* board details */437 int nr;438 int hwrevision;439 u32 board;440 char name[16];441 442 /* firmware status */443 struct saa7164_fw_status fw_status;444 u32 firmwareloaded;445 446 struct tmComResHWDescr hwdesc;447 struct tmComResInterfaceDescr intfdesc;448 struct tmComResBusDescr busdesc;449 450 struct tmComResBusInfo bus;451 452 /* Interrupt status and ack registers */453 u32 int_status;454 u32 int_ack;455 bool msi;456 457 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];458 struct mutex lock;459 460 /* I2c related */461 struct saa7164_i2c i2c_bus[3];462 463 /* Transport related */464 struct saa7164_port ports[SAA7164_MAX_PORTS];465 466 /* Deferred command/api interrupts handling */467 struct work_struct workcmd;468 469 /* A kernel thread to monitor the firmware log, used470 * only in debug mode.471 */472 struct task_struct *kthread;473 474};475 476extern struct list_head saa7164_devlist;477extern unsigned int waitsecs;478extern unsigned int encoder_buffers;479extern unsigned int vbi_buffers;480 481/* ----------------------------------------------------------- */482/* saa7164-core.c */483void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);484void saa7164_getfirmwarestatus(struct saa7164_dev *dev);485u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);486void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);487 488/* ----------------------------------------------------------- */489/* saa7164-fw.c */490int saa7164_downloadfirmware(struct saa7164_dev *dev);491 492/* ----------------------------------------------------------- */493/* saa7164-i2c.c */494extern int saa7164_i2c_register(struct saa7164_i2c *bus);495extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);496 497/* ----------------------------------------------------------- */498/* saa7164-bus.c */499int saa7164_bus_setup(struct saa7164_dev *dev);500void saa7164_bus_dump(struct saa7164_dev *dev);501int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,502 void *buf);503int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,504 void *buf, int peekonly);505 506/* ----------------------------------------------------------- */507/* saa7164-cmd.c */508int saa7164_cmd_send(struct saa7164_dev *dev,509 u8 id, enum tmComResCmd command, u16 controlselector,510 u16 size, void *buf);511void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);512int saa7164_irq_dequeue(struct saa7164_dev *dev);513 514/* ----------------------------------------------------------- */515/* saa7164-api.c */516int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);517int saa7164_api_enum_subdevs(struct saa7164_dev *dev);518int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,519 u32 datalen, u8 *data);520int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,521 u32 datalen, u8 *data);522int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,523 u32 datalen, u8 *data);524int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);525int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);526int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);527int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);528int saa7164_api_initialize_dif(struct saa7164_port *port);529int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);530int saa7164_api_set_encoder(struct saa7164_port *port);531int saa7164_api_get_encoder(struct saa7164_port *port);532int saa7164_api_set_aspect_ratio(struct saa7164_port *port);533int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);534int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);535int saa7164_api_set_videomux(struct saa7164_port *port);536int saa7164_api_audio_mute(struct saa7164_port *port, int mute);537int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);538int saa7164_api_set_audio_std(struct saa7164_port *port);539int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);540int saa7164_api_get_videomux(struct saa7164_port *port);541int saa7164_api_set_vbi_format(struct saa7164_port *port);542int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);543int saa7164_api_collect_debug(struct saa7164_dev *dev);544int saa7164_api_get_load_info(struct saa7164_dev *dev,545 struct tmFwInfoStruct *i);546 547/* ----------------------------------------------------------- */548/* saa7164-cards.c */549extern struct saa7164_board saa7164_boards[];550extern const unsigned int saa7164_bcount;551 552extern struct saa7164_subid saa7164_subids[];553extern const unsigned int saa7164_idcount;554 555extern void saa7164_card_list(struct saa7164_dev *dev);556extern void saa7164_gpio_setup(struct saa7164_dev *dev);557extern void saa7164_card_setup(struct saa7164_dev *dev);558 559extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);560extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);561extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);562 563/* ----------------------------------------------------------- */564/* saa7164-dvb.c */565extern int saa7164_dvb_register(struct saa7164_port *port);566extern int saa7164_dvb_unregister(struct saa7164_port *port);567 568/* ----------------------------------------------------------- */569/* saa7164-buffer.c */570extern struct saa7164_buffer *saa7164_buffer_alloc(571 struct saa7164_port *port, u32 len);572extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);573extern void saa7164_buffer_display(struct saa7164_buffer *buf);574extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);575extern int saa7164_buffer_cfg_port(struct saa7164_port *port);576extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(577 struct saa7164_dev *dev, u32 len);578extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);579extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);580 581/* ----------------------------------------------------------- */582/* saa7164-encoder.c */583int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);584int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);585int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);586int saa7164_g_input(struct saa7164_port *port, unsigned int *i);587int saa7164_s_input(struct saa7164_port *port, unsigned int i);588int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);589int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);590int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);591int saa7164_s_frequency(struct saa7164_port *port,592 const struct v4l2_frequency *f);593int saa7164_encoder_register(struct saa7164_port *port);594void saa7164_encoder_unregister(struct saa7164_port *port);595 596/* ----------------------------------------------------------- */597/* saa7164-vbi.c */598int saa7164_vbi_register(struct saa7164_port *port);599void saa7164_vbi_unregister(struct saa7164_port *port);600 601/* ----------------------------------------------------------- */602 603extern unsigned int crc_checking;604 605extern unsigned int saa_debug;606#define dprintk(level, fmt, arg...)\607 do { if (saa_debug & level)\608 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\609 } while (0)610 611#define log_warn(fmt, arg...)\612 do { \613 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\614 } while (0)615 616#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))617#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))618 619#define saa7164_readb(reg) readl(dev->bmmio + (reg))620#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))621 622