/*
* tw68 driver common header file
*
* Much of this code is derived from the cx88 and sa7134 drivers, which
* were in turn derived from the bt87x driver. The original work was by
* Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,
* Hans Verkuil, Andy Walls and many others. Their work is gratefully
* acknowledged. Full credit goes to them - any problems within this code
* are mine.
*
* Copyright (C) 2009 William M. Brack
*
* Refactored and updated to the latest v4l core frameworks:
*
* Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>
*
* 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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <linux/notifier.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/io.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-sg.h>
#include "tw68-reg.h"
#define UNSET (-1U)
#define TW68_NORMS ( \
V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \
V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60)
#define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \
TW68_FFOF | TW68_DMAPI)
/* TW6800 chips have trouble with these, so we don't set them for that chip */
#define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)
#define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \
TW68_SBDONE2)
enum tw68_decoder_type {
TW6800,
TW6801,
TW6804,
TWXXXX,
};
/* ----------------------------------------------------------- */
/* static data */
struct tw68_tvnorm {
char *name;
v4l2_std_id id;
/* video decoder */
u32 sync_control;
u32 luma_control;
u32 chroma_ctrl1;
u32 chroma_gain;
u32 chroma_ctrl2;
u32 vgate_misc;
/* video scaler */
u32 h_delay;
u32 h_delay0; /* for TW6800 */
u32 h_start;
u32 h_stop;
u32 v_delay;
u32 video_v_start;
u32 video_v_stop;
u32 vbi_v_start_0;
u32 vbi_v_stop_0;
u32 vbi_v_start_1;
/* Techwell specific */
u32 format;
};
struct tw68_format {
char *name;
u32 fourcc;
u32 depth;
u32 twformat;
};
/* ----------------------------------------------------------- */
/* card configuration */
#define TW68_BOARD_NOAUTO UNSET
#define TW68_BOARD_UNKNOWN 0
#define TW68_BOARD_GENERIC_6802 1
#define TW68_MAXBOARDS 16
#define TW68_INPUT_MAX 4
/* ----------------------------------------------------------- */
/* device / file handle status */
#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
struct tw68_dev; /* forward delclaration */
/* buffer for one video/vbi/ts frame */
struct tw68_buf {
struct vb2_v4l2_buffer vb;
struct list_head list;
unsigned int size;
__le32 *cpu;
__le32 *jmp;
dma_addr_t dma;
};
struct tw68_fmt {
char *name;
u32 fourcc; /* v4l2 format id */
int depth;
int flags;
u32 twformat;
};
/* global device status */
struct tw68_dev {
struct mutex lock;
spinlock_t slock;
u16 instance;
struct v4l2_device v4l2_dev;
/* various device info */
enum tw68_decoder_type vdecoder;
struct video_device vdev;
struct v4l2_ctrl_handler hdl;
/* pci i/o */
char *name;
struct pci_dev *pci;
unsigned char pci_rev, pci_lat;
u32 __iomem *lmmio;
u8 __iomem *bmmio;
u32 pci_irqmask;
/* The irq mask to be used will depend upon the chip type */
u32 board_virqmask;
/* video capture */
const struct tw68_format *fmt;
unsigned width, height;
unsigned seqnr;
unsigned field;
struct vb2_queue vidq;
struct list_head active;
/* various v4l controls */
const struct tw68_tvnorm *tvnorm; /* video */
int input;
};
/* ----------------------------------------------------------- */
#define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2))
#define tw_readb(reg) readb(dev->bmmio + (reg))
#define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
#define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg))
#define tw_andorl(reg, mask, value) \
writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
((value) & (mask)), dev->lmmio+((reg)>>2))
#define tw_andorb(reg, mask, value) \
writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
((value) & (mask)), dev->bmmio+(reg))
#define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit))
#define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit))
#define tw_clearl(reg, bit) \
writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
dev->lmmio + ((reg) >> 2))
#define tw_clearb(reg, bit) \
writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
dev->bmmio + (reg))
#define tw_wait(us) { udelay(us); }
/* ----------------------------------------------------------- */
/* tw68-video.c */
void tw68_set_tvnorm_hw(struct tw68_dev *dev);
int tw68_video_init1(struct tw68_dev *dev);
int tw68_video_init2(struct tw68_dev *dev, int video_nr);
void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
/* ----------------------------------------------------------- */
/* tw68-risc.c */
int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
struct scatterlist *sglist, unsigned int top_offset,
unsigned int bottom_offset, unsigned int bpl,
unsigned int padding, unsigned int lines);
