drivers/media/platform/qcom/camss-8x16/camss-vfe.h

   1 /*
   2  * camss-vfe.h
   3  *
   4  * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module
   5  *
   6  * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
   7  * Copyright (C) 2015-2017 Linaro Ltd.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 and
  11  * only version 2 as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18 #ifndef QC_MSM_CAMSS_VFE_H
  19 #define QC_MSM_CAMSS_VFE_H
  20
  21 #include <linux/clk.h>
  22 #include <linux/spinlock_types.h>
  23 #include <media/media-entity.h>
  24 #include <media/v4l2-device.h>
  25 #include <media/v4l2-subdev.h>
  26
  27 #include "camss-video.h"
  28
  29 #define MSM_VFE_PAD_SINK 0
  30 #define MSM_VFE_PAD_SRC 1
  31 #define MSM_VFE_PADS_NUM 2
  32
  33 #define MSM_VFE_LINE_NUM 4
  34 #define MSM_VFE_IMAGE_MASTERS_NUM 7
  35 #define MSM_VFE_COMPOSITE_IRQ_NUM 4
  36
  37 #define MSM_VFE_VFE0_UB_SIZE 1023
  38 #define MSM_VFE_VFE0_UB_SIZE_RDI (MSM_VFE_VFE0_UB_SIZE / 3)
  39 #define MSM_VFE_VFE1_UB_SIZE 1535
  40 #define MSM_VFE_VFE1_UB_SIZE_RDI (MSM_VFE_VFE1_UB_SIZE / 3)
  41
  42 enum vfe_output_state {
  43         VFE_OUTPUT_OFF,
  44         VFE_OUTPUT_RESERVED,
  45         VFE_OUTPUT_SINGLE,
  46         VFE_OUTPUT_CONTINUOUS,
  47         VFE_OUTPUT_IDLE,
  48         VFE_OUTPUT_STOPPING
  49 };
  50
  51 enum vfe_line_id {
  52         VFE_LINE_NONE = -1,
  53         VFE_LINE_RDI0 = 0,
  54         VFE_LINE_RDI1 = 1,
  55         VFE_LINE_RDI2 = 2,
  56         VFE_LINE_PIX = 3
  57 };
  58
  59 struct vfe_output {
  60         u8 wm_num;
  61         u8 wm_idx[3];
  62
  63         int active_buf;
  64         struct camss_buffer *buf[2];
  65         struct camss_buffer *last_buffer;
  66         struct list_head pending_bufs;
  67
  68         unsigned int drop_update_idx;
  69
  70         enum vfe_output_state state;
  71         unsigned int sequence;
  72         int wait_sof;
  73         int wait_reg_update;
  74         struct completion sof;
  75         struct completion reg_update;
  76 };
  77
  78 struct vfe_line {
  79         enum vfe_line_id id;
  80         struct v4l2_subdev subdev;
  81         struct media_pad pads[MSM_VFE_PADS_NUM];
  82         struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM];
  83         struct v4l2_rect compose;
  84         struct v4l2_rect crop;
  85         struct camss_video video_out;
  86         struct vfe_output output;
  87 };
  88
  89 struct vfe_device {
  90         u8 id;
  91         void __iomem *base;
  92         u32 irq;
  93         char irq_name[30];
  94         struct camss_clock *clock;
  95         int nclocks;
  96         struct completion reset_complete;
  97         struct completion halt_complete;
  98         struct mutex power_lock;
  99         int power_count;
 100         struct mutex stream_lock;
 101         int stream_count;
 102         spinlock_t output_lock;
 103         enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM];
 104         struct vfe_line line[MSM_VFE_LINE_NUM];
 105         u32 reg_update;
 106         u8 was_streaming;
 107 };
 108
 109 struct resources;
 110
 111 int msm_vfe_subdev_init(struct vfe_device *vfe, const struct resources *res);
 112
 113 int msm_vfe_register_entities(struct vfe_device *vfe,
 114                               struct v4l2_device *v4l2_dev);
 115
 116 void msm_vfe_unregister_entities(struct vfe_device *vfe);
 117
 118 void msm_vfe_get_vfe_id(struct media_entity *entity, u8 *id);
 119 void msm_vfe_get_vfe_line_id(struct media_entity *entity, enum vfe_line_id *id);
 120
 121 void msm_vfe_stop_streaming(struct vfe_device *vfe);
 122
 123 #endif /* QC_MSM_CAMSS_VFE_H */