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/* SPDX-License-Identifier: GPL-2.0-or-later */
* Driver for the Conexant CX25821 PCIe bridge
* Copyright (C) 2009 Conexant Systems Inc.
* Authors <>, <>
* Based on Steven Toth <> cx23885 driver
#ifndef CX25821_H_
#define CX25821_H_
#include <linux/pci.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/kdev_t.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-sg.h>
#include "cx25821-reg.h"
#include "cx25821-medusa-reg.h"
#include "cx25821-sram.h"
#include "cx25821-audio.h"
#include <linux/mutex.h>
#define UNSET (-1U)
#define NO_SYNC_LINE (-1U)
#define CX25821_MAXBOARDS 2
#define LINE_SIZE_D1 1440
/* Number of decoders and encoders */
#define MAX_DECODERS 8
#define MAX_ENCODERS 2
#define MAX_CAMERAS 16
/* Max number of inputs by card */
#define MAX_CX25821_INPUT 8
#define RESOURCE_VIDEO4 16
#define RESOURCE_VIDEO5 32
#define RESOURCE_VIDEO6 64
#define RESOURCE_VIDEO7 128
#define RESOURCE_VIDEO8 256
#define RESOURCE_VIDEO9 512
#define RESOURCE_VIDEO10 1024
#define RESOURCE_VIDEO11 2048
#define BUFFER_TIMEOUT (HZ) /* 0.5 seconds */
#define CX25821_BOARD 1
/* Currently supported by the driver */
#define CX25821_NORMS (\
* Maximum capture-only channels. This can go away once video/audio output
* is fully supported in this driver.
struct cx25821_fmt {
u32 fourcc; /* v4l2 format id */
int depth;
int flags;
u32 cxformat;
struct cx25821_tvnorm {
char *name;
v4l2_std_id id;
u32 cxiformat;
u32 cxoformat;
enum cx25821_src_sel_type {
CX25821_SRC_SEL_EXT_656_VIDEO = 0,
struct cx25821_riscmem {
unsigned int size;
__le32 *cpu;
__le32 *jmp;
dma_addr_t dma;
/* buffer for one video frame */
struct cx25821_buffer {
/* common v4l buffer stuff -- must be first */
struct vb2_v4l2_buffer vb;
struct list_head queue;
/* cx25821 specific */
unsigned int bpl;
struct cx25821_riscmem risc;
const struct cx25821_fmt *fmt;
enum port {
CX25821_UNDEFINED = 0,
struct cx25821_board {
const char *name;
enum port porta;
enum port portb;
enum port portc;
u32 clk_freq;
struct cx25821_i2c {
struct cx25821_dev *dev;
int nr;
/* i2c i/o */
struct i2c_adapter i2c_adap;
struct i2c_client i2c_client;
u32 i2c_rc;
/* cx25821 registers used for raw address */
u32 i2c_period;
u32 reg_ctrl;
u32 reg_stat;
u32 reg_addr;
u32 reg_rdata;
u32 reg_wdata;
struct cx25821_dmaqueue {
struct list_head active;
u32 count;
struct cx25821_dev;
struct cx25821_channel;
struct cx25821_video_out_data {
struct cx25821_channel *chan;
int _line_size;
int _prog_cnt;
int _pixel_format;
int _is_first_frame;
int _is_running;
int _file_status;
int _lines_count;
int _frame_count;
unsigned int _risc_size;
__le32 *_dma_virt_start_addr;
__le32 *_dma_virt_addr;
dma_addr_t _dma_phys_addr;
dma_addr_t _dma_phys_start_addr;
unsigned int _data_buf_size;
__le32 *_data_buf_virt_addr;
dma_addr_t _data_buf_phys_addr;
u32 upstream_riscbuf_size;
u32 upstream_databuf_size;
int is_60hz;
int _frame_index;
int cur_frame_index;
int curpos;
wait_queue_head_t waitq;
struct cx25821_channel {
unsigned id;
struct cx25821_dev *dev;
struct v4l2_ctrl_handler hdl;
struct video_device vdev;
struct cx25821_dmaqueue dma_vidq;
struct vb2_queue vidq;
const struct sram_channel *sram_channels;
const struct cx25821_fmt *fmt;
unsigned field;
unsigned int width, height;
int pixel_formats;
int use_cif_resolution;
int cif_width;
/* video output data for the video output channel */
struct cx25821_video_out_data *out;
struct snd_card;
struct cx25821_dev {
struct v4l2_device v4l2_dev;
/* pci stuff */
struct pci_dev *pci;
unsigned char pci_rev, pci_lat;
int pci_bus, pci_slot;
u32 base_io_addr;
u32 __iomem *lmmio;
u8 __iomem *bmmio;
int pci_irqmask;
int hwrevision;
/* used by cx25821-alsa */
struct snd_card *card;
u32 clk_freq;
/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
struct cx25821_i2c i2c_bus[3];
int nr;
struct mutex lock;
struct cx25821_channel channels[MAX_VID_CHANNEL_NUM];
/* board details */
unsigned int board;
char name[32];
/* Analog video */
unsigned int input;
v4l2_std_id tvnorm;
unsigned short _max_num_decoders;
/* Analog Audio Upstream */
int _audio_is_running;
int _audiopixel_format;
int _is_first_audio_frame;
int _audiofile_status;
int _audio_lines_count;
int _audioframe_count;
int _audio_upstream_channel;
int _last_index_irq; /* The last interrupt index processed. */
__le32 *_risc_audio_jmp_addr;
__le32 *_risc_virt_start_addr;
__le32 *_risc_virt_addr;
dma_addr_t _risc_phys_addr;
dma_addr_t _risc_phys_start_addr;
unsigned int _audiorisc_size;
unsigned int _audiodata_buf_size;
__le32 *_audiodata_buf_virt_addr;
dma_addr_t _audiodata_buf_phys_addr;
char *_audiofilename;
u32 audio_upstream_riscbuf_size;
u32 audio_upstream_databuf_size;
int _audioframe_index;
struct work_struct _audio_work_entry;
char *input_audiofilename;
/* V4l */
spinlock_t slock;
/* Video Upstream */
struct cx25821_video_out_data vid_out_data[2];
static inline struct cx25821_dev *get_cx25821(struct v4l2_device *v4l2_dev)
return container_of(v4l2_dev, struct cx25821_dev, v4l2_dev);
extern struct cx25821_board cx25821_boards[];
#define SRAM_CH00 0 /* Video A */
#define SRAM_CH01 1 /* Video B */
#define SRAM_CH02 2 /* Video C */
#define SRAM_CH03 3 /* Video D */
#define SRAM_CH04 4 /* Video E */
#define SRAM_CH05 5 /* Video F */
#define SRAM_CH06 6 /* Video G */
#define SRAM_CH07 7 /* Video H */
#define SRAM_CH08 8 /* Audio A */
#define SRAM_CH09 9 /* Video Upstream I */
#define SRAM_CH10 10 /* Video Upstream J */
#define SRAM_CH11 11 /* Audio Upstream AUD_CHANNEL_B */
struct sram_channel {
char *name;
u32 i;
u32 cmds_start;
u32 ctrl_start;
u32 cdt;
u32 fifo_start;
u32 fifo_size;
u32 ptr1_reg;
u32 ptr2_reg;
u32 cnt1_reg;
u32 cnt2_reg;
u32 int_msk;
u32 int_stat;
u32 int_mstat;
u32 dma_ctl;
u32 gpcnt_ctl;
u32 gpcnt;
u32 aud_length;
u32 aud_cfg;
u32 fld_aud_fifo_en;
u32 fld_aud_risc_en;
/* For Upstream Video */
u32 vid_fmt_ctl;
u32 vid_active_ctl1;
u32 vid_active_ctl2;
u32 vid_cdt_size;
u32 vip_ctl;
u32 pix_frmt;
u32 jumponly;
u32 irq_bit;
extern const struct sram_channel cx25821_sram_channels[];
#define cx_read(reg) readl(dev->lmmio + ((reg)>>2))
#define cx_write(reg, value) writel((value), dev->lmmio + ((reg)>>2))
#define cx_andor(reg, mask, value) \
writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
((value) & (mask)), dev->lmmio+((reg)>>2))
#define cx_set(reg, bit) cx_andor((reg), (bit), (bit))
#define cx_clear(reg, bit) cx_andor((reg), (bit), 0)
#define Set_GPIO_Bit(Bit) (1 << Bit)
#define Clear_GPIO_Bit(Bit) (~(1 << Bit))
#define CX25821_ERR(fmt, args...) \
pr_err("(%d): " fmt, dev->board, ##args)
#define CX25821_WARN(fmt, args...) \
pr_warn("(%d): " fmt, dev->board, ##args)
#define CX25821_INFO(fmt, args...) \
pr_info("(%d): " fmt, dev->board, ##args)
extern int cx25821_i2c_register(struct cx25821_i2c *bus);
extern int cx25821_i2c_read(struct cx25821_i2c *bus, u16 reg_addr, int *value);
extern int cx25821_i2c_write(struct cx25821_i2c *bus, u16 reg_addr, int value);
extern int cx25821_i2c_unregister(struct cx25821_i2c *bus);
extern void cx25821_gpio_init(struct cx25821_dev *dev);
extern void cx25821_set_gpiopin_direction(struct cx25821_dev *dev,
int pin_number, int pin_logic_value);
extern int medusa_video_init(struct cx25821_dev *dev);
extern int medusa_set_videostandard(struct cx25821_dev *dev);
extern void medusa_set_resolution(struct cx25821_dev *dev, int width,
int decoder_select);
extern int medusa_set_brightness(struct cx25821_dev *dev, int brightness,
int decoder);
extern int medusa_set_contrast(struct cx25821_dev *dev, int contrast,
int decoder);
extern int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder);
extern int medusa_set_saturation(struct cx25821_dev *dev, int saturation,
int decoder);
extern int cx25821_sram_channel_setup(struct cx25821_dev *dev,
const struct sram_channel *ch, unsigned int bpl,
u32 risc);
extern int cx25821_riscmem_alloc(struct pci_dev *pci,
struct cx25821_riscmem *risc,
unsigned int size);
extern int cx25821_risc_buffer(struct pci_dev *pci, struct cx25821_riscmem *risc,
struct scatterlist *sglist,
unsigned int top_offset,
unsigned int bottom_offset,
unsigned int bpl,
unsigned int padding, unsigned int lines);
extern int cx25821_risc_databuffer_audio(struct pci_dev *pci,
struct cx25821_riscmem *risc,
struct scatterlist *sglist,
unsigned int bpl,
unsigned int lines, unsigned int lpi);
extern void cx25821_free_buffer(struct cx25821_dev *dev,
struct cx25821_buffer *buf);
extern void cx25821_sram_channel_dump(struct cx25821_dev *dev,
const struct sram_channel *ch);
extern void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
const struct sram_channel *ch);
extern struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci);
extern void cx25821_print_irqbits(char *name, char *tag, char **strings,
int len, u32 bits, u32 mask);
extern void cx25821_dev_unregister(struct cx25821_dev *dev);
extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
const struct sram_channel *ch,
unsigned int bpl, u32 risc);
extern void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel,
u32 format);