cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vpbe_display.h (3476B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
      4 */
      5#ifndef VPBE_DISPLAY_H
      6#define VPBE_DISPLAY_H
      7
      8/* Header files */
      9#include <linux/videodev2.h>
     10#include <media/v4l2-common.h>
     11#include <media/v4l2-fh.h>
     12#include <media/videobuf2-v4l2.h>
     13#include <media/videobuf2-dma-contig.h>
     14#include <media/davinci/vpbe_types.h>
     15#include <media/davinci/vpbe_osd.h>
     16#include <media/davinci/vpbe.h>
     17
     18#define VPBE_DISPLAY_MAX_DEVICES 2
     19
     20enum vpbe_display_device_id {
     21	VPBE_DISPLAY_DEVICE_0,
     22	VPBE_DISPLAY_DEVICE_1
     23};
     24
     25#define VPBE_DISPLAY_DRV_NAME	"vpbe-display"
     26
     27#define VPBE_DISPLAY_MAJOR_RELEASE              1
     28#define VPBE_DISPLAY_MINOR_RELEASE              0
     29#define VPBE_DISPLAY_BUILD                      1
     30#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
     31	(VPBE_DISPLAY_MINOR_RELEASE << 8)  | \
     32	VPBE_DISPLAY_BUILD)
     33
     34#define VPBE_DISPLAY_VALID_FIELD(field)   ((V4L2_FIELD_NONE == field) || \
     35	 (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
     36
     37/* Exp ratio numerator and denominator constants */
     38#define VPBE_DISPLAY_H_EXP_RATIO_N	9
     39#define VPBE_DISPLAY_H_EXP_RATIO_D	8
     40#define VPBE_DISPLAY_V_EXP_RATIO_N	6
     41#define VPBE_DISPLAY_V_EXP_RATIO_D	5
     42
     43/* Zoom multiplication factor */
     44#define VPBE_DISPLAY_ZOOM_4X	4
     45#define VPBE_DISPLAY_ZOOM_2X	2
     46
     47/* Structures */
     48struct display_layer_info {
     49	int enable;
     50	/* Layer ID used by Display Manager */
     51	enum osd_layer id;
     52	struct osd_layer_config config;
     53	enum osd_zoom_factor h_zoom;
     54	enum osd_zoom_factor v_zoom;
     55	enum osd_h_exp_ratio h_exp;
     56	enum osd_v_exp_ratio v_exp;
     57};
     58
     59struct vpbe_disp_buffer {
     60	struct vb2_v4l2_buffer vb;
     61	struct list_head list;
     62};
     63
     64/* vpbe display object structure */
     65struct vpbe_layer {
     66	/* Pointer to the vpbe_display */
     67	struct vpbe_display *disp_dev;
     68	/* Pointer pointing to current v4l2_buffer */
     69	struct vpbe_disp_buffer *cur_frm;
     70	/* Pointer pointing to next v4l2_buffer */
     71	struct vpbe_disp_buffer *next_frm;
     72	/* videobuf specific parameters
     73	 * Buffer queue used in video-buf
     74	 */
     75	struct vb2_queue buffer_queue;
     76	/* Queue of filled frames */
     77	struct list_head dma_queue;
     78	/* Used in video-buf */
     79	spinlock_t irqlock;
     80	/* V4l2 specific parameters */
     81	/* Identifies video device for this layer */
     82	struct video_device video_dev;
     83	/* Used to store pixel format */
     84	struct v4l2_pix_format pix_fmt;
     85	enum v4l2_field buf_field;
     86	/* Video layer configuration params */
     87	struct display_layer_info layer_info;
     88	/* vpbe specific parameters
     89	 * enable window for display
     90	 */
     91	unsigned char window_enable;
     92	/* number of open instances of the layer */
     93	unsigned int usrs;
     94	/* Indicates id of the field which is being displayed */
     95	unsigned int field_id;
     96	/* Identifies device object */
     97	enum vpbe_display_device_id device_id;
     98	/* facilitation of ioctl ops lock by v4l2*/
     99	struct mutex opslock;
    100	u8 layer_first_int;
    101};
    102
    103/* vpbe device structure */
    104struct vpbe_display {
    105	/* layer specific parameters */
    106	/* lock for isr updates to buf layers*/
    107	spinlock_t dma_queue_lock;
    108	/* C-Plane offset from start of y-plane */
    109	unsigned int cbcr_ofst;
    110	struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
    111	struct vpbe_device *vpbe_dev;
    112	struct osd_state *osd_device;
    113};
    114
    115struct buf_config_params {
    116	unsigned char min_numbuffers;
    117	unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
    118	unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
    119	unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
    120};
    121
    122#endif	/* VPBE_DISPLAY_H */