274 lines
7.3 KiB
C
274 lines
7.3 KiB
C
#ifndef __SAA7146_VV__
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#define __SAA7146_VV__
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#include <linux/videodev.h>
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#include <media/saa7146.h>
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#include <media/video-buf.h>
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#define MAX_SAA7146_CAPTURE_BUFFERS 32 /* arbitrary */
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#define BUFFER_TIMEOUT (HZ/2) /* 0.5 seconds */
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#define WRITE_RPS0(x) do { \
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dev->d_rps0.cpu_addr[ count++ ] = cpu_to_le32(x); \
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} while (0);
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#define WRITE_RPS1(x) do { \
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dev->d_rps1.cpu_addr[ count++ ] = cpu_to_le32(x); \
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} while (0);
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struct saa7146_video_dma {
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u32 base_odd;
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u32 base_even;
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u32 prot_addr;
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u32 pitch;
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u32 base_page;
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u32 num_line_byte;
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};
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#define FORMAT_BYTE_SWAP 0x1
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#define FORMAT_IS_PLANAR 0x2
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struct saa7146_format {
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char *name;
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u32 pixelformat;
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u32 trans;
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u8 depth;
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u8 flags;
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u8 swap;
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};
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struct saa7146_standard
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{
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char *name;
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v4l2_std_id id;
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int v_offset; /* number of lines of vertical offset before processing */
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int v_field; /* number of lines in a field for HPS to process */
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int h_offset; /* horizontal offset of processing window */
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int h_pixels; /* number of horizontal pixels to process */
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int v_max_out;
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int h_max_out;
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};
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/* buffer for one video/vbi frame */
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struct saa7146_buf {
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/* common v4l buffer stuff -- must be first */
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struct videobuf_buffer vb;
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/* saa7146 specific */
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struct v4l2_pix_format *fmt;
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int (*activate)(struct saa7146_dev *dev,
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struct saa7146_buf *buf,
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struct saa7146_buf *next);
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/* page tables */
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struct saa7146_pgtable pt[3];
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};
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struct saa7146_dmaqueue {
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struct saa7146_dev *dev;
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struct saa7146_buf *curr;
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struct list_head queue;
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struct timer_list timeout;
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};
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struct saa7146_overlay {
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struct saa7146_fh *fh;
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struct v4l2_window win;
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struct v4l2_clip clips[16];
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int nclips;
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};
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/* per open data */
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struct saa7146_fh {
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struct saa7146_dev *dev;
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/* if this is a vbi or capture open */
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enum v4l2_buf_type type;
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/* video overlay */
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struct saa7146_overlay ov;
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/* video capture */
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struct videobuf_queue video_q;
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struct v4l2_pix_format video_fmt;
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/* vbi capture */
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struct videobuf_queue vbi_q;
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struct v4l2_vbi_format vbi_fmt;
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struct timer_list vbi_read_timeout;
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unsigned int resources; /* resource management for device open */
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};
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#define STATUS_OVERLAY 0x01
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#define STATUS_CAPTURE 0x02
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struct saa7146_vv
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{
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int vbi_minor;
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/* vbi capture */
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struct saa7146_dmaqueue vbi_q;
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/* vbi workaround interrupt queue */
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wait_queue_head_t vbi_wq;
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int vbi_fieldcount;
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struct saa7146_fh *vbi_streaming;
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int video_minor;
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int video_status;
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struct saa7146_fh *video_fh;
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/* video overlay */
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struct v4l2_framebuffer ov_fb;
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struct saa7146_format *ov_fmt;
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struct saa7146_overlay *ov_data;
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struct saa7146_fh *ov_suspend;
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/* video capture */
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struct saa7146_dmaqueue video_q;
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enum v4l2_field last_field;
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/* common: fixme? shouldn't this be in saa7146_fh?
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(this leads to a more complicated question: shall the driver
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store the different settings (for example S_INPUT) for every open
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and restore it appropriately, or should all settings be common for
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all opens? currently, we do the latter, like all other
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drivers do... */
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struct saa7146_standard *standard;
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int vflip;
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int hflip;
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int current_hps_source;
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int current_hps_sync;
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struct saa7146_dma d_clipping; /* pointer to clipping memory */
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unsigned int resources; /* resource management for device */
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};
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#define SAA7146_EXCLUSIVE 0x1
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#define SAA7146_BEFORE 0x2
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#define SAA7146_AFTER 0x4
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struct saa7146_extension_ioctls
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{
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unsigned int cmd;
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int flags;
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};
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/* flags */
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#define SAA7146_USE_PORT_B_FOR_VBI 0x2 /* use input port b for vbi hardware bug workaround */
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struct saa7146_ext_vv
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{
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/* informations about the video capabilities of the device */
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int inputs;
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int audios;
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u32 capabilities;
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int flags;
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/* additionally supported transmission standards */
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struct saa7146_standard *stds;
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int num_stds;
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int (*std_callback)(struct saa7146_dev*, struct saa7146_standard *);
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struct saa7146_extension_ioctls *ioctls;
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int (*ioctl)(struct saa7146_fh*, unsigned int cmd, void *arg);
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struct file_operations vbi_fops;
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};
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struct saa7146_use_ops {
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void (*init)(struct saa7146_dev *, struct saa7146_vv *);
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int(*open)(struct saa7146_dev *, struct file *);
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void (*release)(struct saa7146_dev *, struct file *);
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void (*irq_done)(struct saa7146_dev *, unsigned long status);
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ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
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};
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/* from saa7146_fops.c */
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int saa7146_register_device(struct video_device **vid, struct saa7146_dev* dev, char *name, int type);
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int saa7146_unregister_device(struct video_device **vid, struct saa7146_dev* dev);
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void saa7146_buffer_finish(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, int state);
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void saa7146_buffer_next(struct saa7146_dev *dev, struct saa7146_dmaqueue *q,int vbi);
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int saa7146_buffer_queue(struct saa7146_dev *dev, struct saa7146_dmaqueue *q, struct saa7146_buf *buf);
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void saa7146_buffer_timeout(unsigned long data);
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void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q,
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struct saa7146_buf *buf);
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int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv);
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int saa7146_vv_release(struct saa7146_dev* dev);
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/* from saa7146_hlp.c */
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int saa7146_enable_overlay(struct saa7146_fh *fh);
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void saa7146_disable_overlay(struct saa7146_fh *fh);
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void saa7146_set_capture(struct saa7146_dev *dev, struct saa7146_buf *buf, struct saa7146_buf *next);
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void saa7146_write_out_dma(struct saa7146_dev* dev, int which, struct saa7146_video_dma* vdma) ;
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void saa7146_set_hps_source_and_sync(struct saa7146_dev *saa, int source, int sync);
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void saa7146_set_gpio(struct saa7146_dev *saa, u8 pin, u8 data);
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/* from saa7146_video.c */
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extern struct saa7146_use_ops saa7146_video_uops;
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int saa7146_start_preview(struct saa7146_fh *fh);
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int saa7146_stop_preview(struct saa7146_fh *fh);
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/* from saa7146_vbi.c */
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extern struct saa7146_use_ops saa7146_vbi_uops;
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/* resource management functions */
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int saa7146_res_get(struct saa7146_fh *fh, unsigned int bit);
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void saa7146_res_free(struct saa7146_fh *fh, unsigned int bits);
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#define RESOURCE_DMA1_HPS 0x1
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#define RESOURCE_DMA2_CLP 0x2
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#define RESOURCE_DMA3_BRS 0x4
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/* saa7146 source inputs */
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#define SAA7146_HPS_SOURCE_PORT_A 0x00
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#define SAA7146_HPS_SOURCE_PORT_B 0x01
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#define SAA7146_HPS_SOURCE_YPB_CPA 0x02
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#define SAA7146_HPS_SOURCE_YPA_CPB 0x03
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/* sync inputs */
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#define SAA7146_HPS_SYNC_PORT_A 0x00
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#define SAA7146_HPS_SYNC_PORT_B 0x01
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/* some memory sizes */
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#define SAA7146_CLIPPING_MEM (14*PAGE_SIZE)
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/* some defines for the various clipping-modes */
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#define SAA7146_CLIPPING_RECT 0x4
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#define SAA7146_CLIPPING_RECT_INVERTED 0x5
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#define SAA7146_CLIPPING_MASK 0x6
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#define SAA7146_CLIPPING_MASK_INVERTED 0x7
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/* output formats: each entry holds four informations */
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#define RGB08_COMPOSED 0x0217 /* composed is used in the sense of "not-planar" */
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/* this means: planar?=0, yuv2rgb-conversation-mode=2, dither=yes(=1), format-mode = 7 */
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#define RGB15_COMPOSED 0x0213
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#define RGB16_COMPOSED 0x0210
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#define RGB24_COMPOSED 0x0201
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#define RGB32_COMPOSED 0x0202
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#define Y8 0x0006
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#define YUV411_COMPOSED 0x0003
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#define YUV422_COMPOSED 0x0000
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/* this means: planar?=1, yuv2rgb-conversion-mode=0, dither=no(=0), format-mode = b */
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#define YUV411_DECOMPOSED 0x100b
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#define YUV422_DECOMPOSED 0x1009
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#define YUV420_DECOMPOSED 0x100a
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#define IS_PLANAR(x) (x & 0xf000)
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/* misc defines */
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#define SAA7146_NO_SWAP (0x0)
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#define SAA7146_TWO_BYTE_SWAP (0x1)
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#define SAA7146_FOUR_BYTE_SWAP (0x2)
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#endif
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