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* Driver for the NXP SAA7164 PCIe bridge
* Copyright (c) 2010-2015 Steven Toth <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Driver architecture
| : Standard Linux driver framework for creating
| : exposing and managing interfaces to the rest
| : of the kernel or userland. Also uses _fw.c to load
| : firmware direct into the PCIe bus, bypassing layers.
saa7164_api..() : Translate kernel specific functions/features
| : into command buffers.
saa7164_cmd..() : Manages the flow of command packets on/off,
| : the bus. Deal with bus errors, timeouts etc.
saa7164_bus..() : Manage a read/write memory ring buffer in the
| : PCIe Address space.
| saa7164_fw...() : Load any frimware
| | : direct into the device
<- ----------------- PCIe address space -------------------- ->
#include <linux/pci.h>
#include <linux/i2c.h>
#include <linux/kdev_t.h>
#include <linux/mutex.h>
#include <linux/crc32.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/tuner.h>
#include <media/tveeprom.h>
#include <dvb_demux.h>
#include <dvb_frontend.h>
#include <dvb_net.h>
#include <dvbdev.h>
#include <dmxdev.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include "saa7164-reg.h"
#include "saa7164-types.h"
#define SAA7164_MAXBOARDS 8
#define UNSET (-1U)
#define SAA7164_BOARD_UNKNOWN 0
#define SAA7164_BOARD_UNKNOWN_REV2 1
#define SAA7164_BOARD_UNKNOWN_REV3 2
#define SAA7164_BOARD_HAUPPAUGE_HVR2250 3
#define SAA7164_BOARD_HAUPPAUGE_HVR2200 4
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6
#define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7
#define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9
#define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10
#define SAA7164_BOARD_HAUPPAUGE_HVR2255proto 11
#define SAA7164_BOARD_HAUPPAUGE_HVR2255 12
#define SAA7164_BOARD_HAUPPAUGE_HVR2205 13
#define SAA7164_MAX_UNITS 8
#define SAA7164_TS_NUMBER_OF_LINES 312
#define SAA7164_PS_NUMBER_OF_LINES 256
#define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */
#define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */
#define SAA7164_MAX_VBI_BUFFERS 64
/* Port related defines */
#define SAA7164_PORT_TS1 (0)
#define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1)
#define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1)
#define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1)
#define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1)
#define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1)
#define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1)
#define DBGLVL_FW 4
#define DBGLVL_DVB 8
#define DBGLVL_I2C 16
#define DBGLVL_API 32
#define DBGLVL_CMD 64
#define DBGLVL_BUS 128
#define DBGLVL_IRQ 256
#define DBGLVL_BUF 512
#define DBGLVL_ENC 1024
#define DBGLVL_VBI 2048
#define DBGLVL_THR 4096
#define DBGLVL_CPU 8192
#define SAA7164_NORMS \
/* TV frequency range copied from tuner-core.c */
#define SAA7164_TV_MIN_FREQ (44U * 16U)
#define SAA7164_TV_MAX_FREQ (958U * 16U)
enum port_t {
enum saa7164_i2c_bus_nr {
SAA7164_I2C_BUS_0 = 0,
enum saa7164_buffer_flags {
enum saa7164_unit_type {
/* The PCIe bridge doesn't grant direct access to i2c.
* Instead, you address i2c devices using a uniqely
* allocated 'unitid' value via a messaging API. This
* is a problem. The kernel and existing demod/tuner
* drivers expect to talk 'i2c', so we have to maintain
* a translation layer, and a series of functions to
* convert i2c bus + device address into a unit id.
struct saa7164_unit {
enum saa7164_unit_type type;
u8 id;
char *name;
enum saa7164_i2c_bus_nr i2c_bus_nr;
u8 i2c_bus_addr;
u8 i2c_reg_len;
struct saa7164_board {
char *name;
enum port_t porta, portb, portc,
portd, porte, portf;
enum {
} chiprev;
struct saa7164_unit unit[SAA7164_MAX_UNITS];
struct saa7164_subid {
u16 subvendor;
u16 subdevice;
u32 card;
struct saa7164_encoder_fh {
struct v4l2_fh fh;
struct saa7164_port *port;
atomic_t v4l_reading;
struct saa7164_vbi_fh {
struct v4l2_fh fh;
struct saa7164_port *port;
atomic_t v4l_reading;
struct saa7164_histogram_bucket {
u32 val;
u32 count;
u64 update_time;
struct saa7164_histogram {
char name[32];
struct saa7164_histogram_bucket counter1[64];
struct saa7164_user_buffer {
struct list_head list;
/* Attributes */
u8 *data;
u32 pos;
u32 actual_size;
u32 crc;
struct saa7164_fw_status {
/* RISC Core details */
u32 status;
u32 mode;
u32 spec;
u32 inst;
u32 cpuload;
u32 remainheap;
/* Firmware version */
u32 version;
u32 major;
u32 sub;
u32 rel;
u32 buildnr;
struct saa7164_dvb {
struct mutex lock;
struct dvb_adapter adapter;
struct dvb_frontend *frontend;
struct dvb_demux demux;
struct dmxdev dmxdev;
struct dmx_frontend fe_hw;
struct dmx_frontend fe_mem;
struct dvb_net net;
int feeding;
struct saa7164_i2c {
struct saa7164_dev *dev;
enum saa7164_i2c_bus_nr nr;
/* I2C I/O */
struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
u32 i2c_rc;
struct saa7164_tvnorm {
char *name;
v4l2_std_id id;
struct saa7164_encoder_params {
struct saa7164_tvnorm encodernorm;
u32 height;
u32 width;
u32 is_50hz;
u32 bitrate; /* bps */
u32 bitrate_peak; /* bps */
u32 bitrate_mode;
u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
u32 audio_sampling_freq;
u32 ctl_mute;
u32 ctl_aspect;
u32 refdist;
u32 gop_size;
struct saa7164_vbi_params {
struct saa7164_tvnorm encodernorm;
u32 height;
u32 width;
u32 is_50hz;
u32 bitrate; /* bps */
u32 bitrate_peak; /* bps */
u32 bitrate_mode;
u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */
u32 audio_sampling_freq;
u32 ctl_mute;
u32 ctl_aspect;
u32 refdist;
u32 gop_size;
struct saa7164_port;
struct saa7164_buffer {
struct list_head list;
/* Note of which h/w buffer list index position we occupy */
int idx;
struct saa7164_port *port;
/* Hardware Specific */
/* PCI Memory allocations */
enum saa7164_buffer_flags flags; /* Free, Busy, Full */
/* A block of page align PCI memory */
u32 pci_size; /* PCI allocation size in bytes */
u64 *cpu; /* Virtual address */
dma_addr_t dma; /* Physical address */
u32 crc; /* Checksum for the entire buffer data */
/* A page table that splits the block into a number of entries */
u32 pt_size; /* PCI allocation size in bytes */
u64 *pt_cpu; /* Virtual address */
dma_addr_t pt_dma; /* Physical address */
/* Encoder fops */
u32 pos;
u32 actual_size;
struct saa7164_port {
struct saa7164_dev *dev;
enum port_t type;
int nr;
/* --- Generic port attributes --- */
/* HW stream parameters */
struct tmHWStreamParameters hw_streamingparams;
/* DMA configuration values, is seeded during initialization */
struct tmComResDMATermDescrHeader hwcfg;
/* hardware specific registers */
u32 bufcounter;
u32 pitch;
u32 bufsize;
u32 bufoffset;
u32 bufptr32l;
u32 bufptr32h;
u64 bufptr64;
u32 numpte; /* Number of entries in array, only valid in head */
struct mutex dmaqueue_lock;
struct saa7164_buffer dmaqueue;
u64 last_irq_msecs, last_svc_msecs;
u64 last_irq_msecs_diff, last_svc_msecs_diff;
u32 last_svc_wp;
u32 last_svc_rp;
u64 last_irq_svc_msecs_diff;
u64 last_read_msecs, last_read_msecs_diff;
u64 last_poll_msecs, last_poll_msecs_diff;
struct saa7164_histogram irq_interval;
struct saa7164_histogram svc_interval;
struct saa7164_histogram irq_svc_interval;
struct saa7164_histogram read_interval;
struct saa7164_histogram poll_interval;
/* --- DVB Transport Specific --- */
struct saa7164_dvb dvb;
struct i2c_client *i2c_client_demod;
struct i2c_client *i2c_client_tuner;
/* --- Encoder/V4L related attributes --- */
/* Encoder */
/* Defaults established in saa7164-encoder.c */
struct saa7164_tvnorm encodernorm;
struct v4l2_ctrl_handler ctrl_handler;
v4l2_std_id std;
u32 height;
u32 width;
u32 freq;
u8 mux_input;
u8 encoder_profile;
u8 video_format;
u8 audio_format;
u8 video_resolution;
u16 ctl_brightness;
u16 ctl_contrast;
u16 ctl_hue;
u16 ctl_saturation;
u16 ctl_sharpness;
s8 ctl_volume;
struct tmComResAFeatureDescrHeader audfeat;
struct tmComResEncoderDescrHeader encunit;
struct tmComResProcDescrHeader vidproc;
struct tmComResExtDevDescrHeader ifunit;
struct tmComResTunerDescrHeader tunerunit;
struct work_struct workenc;
/* V4L Encoder Video */
struct saa7164_encoder_params encoder_params;
struct video_device *v4l_device;
atomic_t v4l_reader_count;
struct saa7164_buffer list_buf_used;
struct saa7164_buffer list_buf_free;
wait_queue_head_t wait_read;
/* V4L VBI */
struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc;
struct saa7164_vbi_params vbi_params;
struct saa7164_port *enc_port;
/* Debug */
u32 sync_errors;
u32 v_cc_errors;
u32 a_cc_errors;
u8 last_v_cc;
u8 last_a_cc;
u32 done_first_interrupt;
struct saa7164_dev {
struct list_head devlist;
atomic_t refcount;
struct v4l2_device v4l2_dev;
/* pci stuff */
struct pci_dev *pci;
unsigned char pci_rev, pci_lat;
int pci_bus, pci_slot;
u32 __iomem *lmmio;
u8 __iomem *bmmio;
u32 __iomem *lmmio2;
u8 __iomem *bmmio2;
int pci_irqmask;
/* board details */
int nr;
int hwrevision;
u32 board;
char name[16];
/* firmware status */
struct saa7164_fw_status fw_status;
u32 firmwareloaded;
struct tmComResHWDescr hwdesc;
struct tmComResInterfaceDescr intfdesc;
struct tmComResBusDescr busdesc;
struct tmComResBusInfo bus;
/* Interrupt status and ack registers */
u32 int_status;
u32 int_ack;
bool msi;
struct cmd cmds[SAA_CMD_MAX_MSG_UNITS];
struct mutex lock;
/* I2c related */
struct saa7164_i2c i2c_bus[3];
/* Transport related */
struct saa7164_port ports[SAA7164_MAX_PORTS];
/* Deferred command/api interrupts handling */
struct work_struct workcmd;
/* A kernel thread to monitor the firmware log, used
* only in debug mode.
struct task_struct *kthread;
extern struct list_head saa7164_devlist;
extern unsigned int waitsecs;
extern unsigned int encoder_buffers;
extern unsigned int vbi_buffers;
/* ----------------------------------------------------------- */
/* saa7164-core.c */
void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr);
void saa7164_getfirmwarestatus(struct saa7164_dev *dev);
u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev);
void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val);
/* ----------------------------------------------------------- */
/* saa7164-fw.c */
int saa7164_downloadfirmware(struct saa7164_dev *dev);
/* ----------------------------------------------------------- */
/* saa7164-i2c.c */
extern int saa7164_i2c_register(struct saa7164_i2c *bus);
extern int saa7164_i2c_unregister(struct saa7164_i2c *bus);
extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus,
unsigned int cmd, void *arg);
/* ----------------------------------------------------------- */
/* saa7164-bus.c */
int saa7164_bus_setup(struct saa7164_dev *dev);
void saa7164_bus_dump(struct saa7164_dev *dev);
int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg,
void *buf);
int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg,
void *buf, int peekonly);
/* ----------------------------------------------------------- */
/* saa7164-cmd.c */
int saa7164_cmd_send(struct saa7164_dev *dev,
u8 id, enum tmComResCmd command, u16 controlselector,
u16 size, void *buf);
void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno);
int saa7164_irq_dequeue(struct saa7164_dev *dev);
/* ----------------------------------------------------------- */
/* saa7164-api.c */
int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version);
int saa7164_api_enum_subdevs(struct saa7164_dev *dev);
int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg,
u32 datalen, u8 *data);
int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr,
u32 datalen, u8 *data);
int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr,
u32 datalen, u8 *data);
int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen);
int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin);
int saa7164_api_transition_port(struct saa7164_port *port, u8 mode);
int saa7164_api_initialize_dif(struct saa7164_port *port);
int saa7164_api_configure_dif(struct saa7164_port *port, u32 std);
int saa7164_api_set_encoder(struct saa7164_port *port);
int saa7164_api_get_encoder(struct saa7164_port *port);
int saa7164_api_set_aspect_ratio(struct saa7164_port *port);
int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl);
int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl);
int saa7164_api_set_videomux(struct saa7164_port *port);
int saa7164_api_audio_mute(struct saa7164_port *port, int mute);
int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level);
int saa7164_api_set_audio_std(struct saa7164_port *port);
int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect);
int saa7164_api_get_videomux(struct saa7164_port *port);
int saa7164_api_set_vbi_format(struct saa7164_port *port);
int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level);
int saa7164_api_collect_debug(struct saa7164_dev *dev);
int saa7164_api_get_load_info(struct saa7164_dev *dev,
struct tmFwInfoStruct *i);
/* ----------------------------------------------------------- */
/* saa7164-cards.c */
extern struct saa7164_board saa7164_boards[];
extern const unsigned int saa7164_bcount;
extern struct saa7164_subid saa7164_subids[];
extern const unsigned int saa7164_idcount;
extern void saa7164_card_list(struct saa7164_dev *dev);
extern void saa7164_gpio_setup(struct saa7164_dev *dev);
extern void saa7164_card_setup(struct saa7164_dev *dev);
extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr);
extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr);
extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid);
/* ----------------------------------------------------------- */
/* saa7164-dvb.c */
extern int saa7164_dvb_register(struct saa7164_port *port);
extern int saa7164_dvb_unregister(struct saa7164_port *port);
/* ----------------------------------------------------------- */
/* saa7164-buffer.c */
extern struct saa7164_buffer *saa7164_buffer_alloc(
struct saa7164_port *port, u32 len);
extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf);
extern void saa7164_buffer_display(struct saa7164_buffer *buf);
extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i);
extern int saa7164_buffer_cfg_port(struct saa7164_port *port);
extern struct saa7164_user_buffer *saa7164_buffer_alloc_user(
struct saa7164_dev *dev, u32 len);
extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf);
extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i);
/* ----------------------------------------------------------- */
/* saa7164-encoder.c */
int saa7164_s_std(struct saa7164_port *port, v4l2_std_id id);
int saa7164_g_std(struct saa7164_port *port, v4l2_std_id *id);
int saa7164_enum_input(struct file *file, void *priv, struct v4l2_input *i);
int saa7164_g_input(struct saa7164_port *port, unsigned int *i);
int saa7164_s_input(struct saa7164_port *port, unsigned int i);
int saa7164_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t);
int saa7164_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t);
int saa7164_g_frequency(struct saa7164_port *port, struct v4l2_frequency *f);
int saa7164_s_frequency(struct saa7164_port *port,
const struct v4l2_frequency *f);
int saa7164_encoder_register(struct saa7164_port *port);
void saa7164_encoder_unregister(struct saa7164_port *port);
/* ----------------------------------------------------------- */
/* saa7164-vbi.c */
int saa7164_vbi_register(struct saa7164_port *port);
void saa7164_vbi_unregister(struct saa7164_port *port);
/* ----------------------------------------------------------- */
extern unsigned int crc_checking;
extern unsigned int saa_debug;
#define dprintk(level, fmt, arg...)\
do { if (saa_debug & level)\
printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
} while (0)
#define log_warn(fmt, arg...)\
do { \
printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\
} while (0)
#define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2))
#define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
#define saa7164_readb(reg) readl(dev->bmmio + (reg))
#define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg))