diff options
Diffstat (limited to 'drivers/media/pci/tw68/tw68.h')
| -rw-r--r-- | drivers/media/pci/tw68/tw68.h | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/media/pci/tw68/tw68.h b/drivers/media/pci/tw68/tw68.h new file mode 100644 index 000000000..a1f422d6e --- /dev/null +++ b/drivers/media/pci/tw68/tw68.h @@ -0,0 +1,205 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * 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> + */ + +#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 { + 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); |