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205 lines
5.4 KiB
205 lines
5.4 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* tw68 driver common header file |
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* |
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* Much of this code is derived from the cx88 and sa7134 drivers, which |
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* were in turn derived from the bt87x driver. The original work was by |
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* Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab, |
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* Hans Verkuil, Andy Walls and many others. Their work is gratefully |
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* acknowledged. Full credit goes to them - any problems within this code |
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* are mine. |
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* |
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* Copyright (C) 2009 William M. Brack |
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* |
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* Refactored and updated to the latest v4l core frameworks: |
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* |
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* Copyright (C) 2014 Hans Verkuil <[email protected]> |
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*/ |
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#include <linux/pci.h> |
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#include <linux/videodev2.h> |
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#include <linux/notifier.h> |
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#include <linux/delay.h> |
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#include <linux/mutex.h> |
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#include <linux/io.h> |
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#include <media/v4l2-common.h> |
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#include <media/v4l2-ioctl.h> |
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#include <media/v4l2-ctrls.h> |
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#include <media/v4l2-device.h> |
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#include <media/videobuf2-v4l2.h> |
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#include <media/videobuf2-dma-sg.h> |
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#include "tw68-reg.h" |
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#define UNSET (-1U) |
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#define TW68_NORMS ( \ |
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V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \ |
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V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60) |
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#define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \ |
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TW68_FFOF | TW68_DMAPI) |
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/* TW6800 chips have trouble with these, so we don't set them for that chip */ |
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#define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK) |
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#define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \ |
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TW68_SBDONE2) |
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enum tw68_decoder_type { |
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TW6800, |
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TW6801, |
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TW6804, |
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TWXXXX, |
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}; |
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/* ----------------------------------------------------------- */ |
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/* static data */ |
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struct tw68_tvnorm { |
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char *name; |
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v4l2_std_id id; |
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/* video decoder */ |
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u32 sync_control; |
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u32 luma_control; |
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u32 chroma_ctrl1; |
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u32 chroma_gain; |
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u32 chroma_ctrl2; |
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u32 vgate_misc; |
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/* video scaler */ |
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u32 h_delay; |
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u32 h_delay0; /* for TW6800 */ |
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u32 h_start; |
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u32 h_stop; |
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u32 v_delay; |
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u32 video_v_start; |
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u32 video_v_stop; |
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u32 vbi_v_start_0; |
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u32 vbi_v_stop_0; |
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u32 vbi_v_start_1; |
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/* Techwell specific */ |
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u32 format; |
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}; |
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struct tw68_format { |
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u32 fourcc; |
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u32 depth; |
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u32 twformat; |
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}; |
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/* ----------------------------------------------------------- */ |
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/* card configuration */ |
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#define TW68_BOARD_NOAUTO UNSET |
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#define TW68_BOARD_UNKNOWN 0 |
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#define TW68_BOARD_GENERIC_6802 1 |
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#define TW68_MAXBOARDS 16 |
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#define TW68_INPUT_MAX 4 |
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/* ----------------------------------------------------------- */ |
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/* device / file handle status */ |
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#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ |
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struct tw68_dev; /* forward delclaration */ |
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/* buffer for one video/vbi/ts frame */ |
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struct tw68_buf { |
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struct vb2_v4l2_buffer vb; |
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struct list_head list; |
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unsigned int size; |
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__le32 *cpu; |
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__le32 *jmp; |
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dma_addr_t dma; |
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}; |
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struct tw68_fmt { |
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char *name; |
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u32 fourcc; /* v4l2 format id */ |
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int depth; |
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int flags; |
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u32 twformat; |
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}; |
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/* global device status */ |
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struct tw68_dev { |
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struct mutex lock; |
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spinlock_t slock; |
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u16 instance; |
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struct v4l2_device v4l2_dev; |
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/* various device info */ |
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enum tw68_decoder_type vdecoder; |
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struct video_device vdev; |
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struct v4l2_ctrl_handler hdl; |
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/* pci i/o */ |
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char *name; |
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struct pci_dev *pci; |
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unsigned char pci_rev, pci_lat; |
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u32 __iomem *lmmio; |
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u8 __iomem *bmmio; |
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u32 pci_irqmask; |
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/* The irq mask to be used will depend upon the chip type */ |
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u32 board_virqmask; |
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/* video capture */ |
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const struct tw68_format *fmt; |
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unsigned width, height; |
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unsigned seqnr; |
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unsigned field; |
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struct vb2_queue vidq; |
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struct list_head active; |
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/* various v4l controls */ |
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const struct tw68_tvnorm *tvnorm; /* video */ |
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int input; |
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}; |
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/* ----------------------------------------------------------- */ |
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#define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2)) |
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#define tw_readb(reg) readb(dev->bmmio + (reg)) |
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#define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) |
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#define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg)) |
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#define tw_andorl(reg, mask, value) \ |
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writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\ |
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((value) & (mask)), dev->lmmio+((reg)>>2)) |
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#define tw_andorb(reg, mask, value) \ |
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writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\ |
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((value) & (mask)), dev->bmmio+(reg)) |
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#define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit)) |
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#define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit)) |
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#define tw_clearl(reg, bit) \ |
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writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \ |
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dev->lmmio + ((reg) >> 2)) |
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#define tw_clearb(reg, bit) \ |
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writeb((readb(dev->bmmio+(reg)) & ~(bit)), \ |
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dev->bmmio + (reg)) |
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#define tw_wait(us) { udelay(us); } |
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/* ----------------------------------------------------------- */ |
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/* tw68-video.c */ |
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void tw68_set_tvnorm_hw(struct tw68_dev *dev); |
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int tw68_video_init1(struct tw68_dev *dev); |
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int tw68_video_init2(struct tw68_dev *dev, int video_nr); |
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void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status); |
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int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf); |
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/* ----------------------------------------------------------- */ |
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/* tw68-risc.c */ |
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int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf, |
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struct scatterlist *sglist, unsigned int top_offset, |
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unsigned int bottom_offset, unsigned int bpl, |
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unsigned int padding, unsigned int lines);
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