drivers/media/platform/omap3isp/ispccdc.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * ispccdc.h
   4  *
   5  * TI OMAP3 ISP - CCDC module
   6  *
   7  * Copyright (C) 2009-2010 Nokia Corporation
   8  * Copyright (C) 2009 Texas Instruments, Inc.
   9  *
  10  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  11  *           Sakari Ailus <sakari.ailus@iki.fi>
  12  */
  13
  14 #ifndef OMAP3_ISP_CCDC_H
  15 #define OMAP3_ISP_CCDC_H
  16
  17 #include <linux/omap3isp.h>
  18 #include <linux/workqueue.h>
  19
  20 #include "ispvideo.h"
  21
  22 enum ccdc_input_entity {
  23         CCDC_INPUT_NONE,
  24         CCDC_INPUT_PARALLEL,
  25         CCDC_INPUT_CSI2A,
  26         CCDC_INPUT_CCP2B,
  27         CCDC_INPUT_CSI2C
  28 };
  29
  30 #define CCDC_OUTPUT_MEMORY      (1 << 0)
  31 #define CCDC_OUTPUT_PREVIEW     (1 << 1)
  32 #define CCDC_OUTPUT_RESIZER     (1 << 2)
  33
  34 #define OMAP3ISP_CCDC_NEVENTS   16
  35
  36 struct ispccdc_fpc {
  37         void *addr;
  38         dma_addr_t dma;
  39         unsigned int fpnum;
  40 };
  41
  42 enum ispccdc_lsc_state {
  43         LSC_STATE_STOPPED = 0,
  44         LSC_STATE_STOPPING = 1,
  45         LSC_STATE_RUNNING = 2,
  46         LSC_STATE_RECONFIG = 3,
  47 };
  48
  49 struct ispccdc_lsc_config_req {
  50         struct list_head list;
  51         struct omap3isp_ccdc_lsc_config config;
  52         unsigned char enable;
  53
  54         struct {
  55                 void *addr;
  56                 dma_addr_t dma;
  57                 struct sg_table sgt;
  58         } table;
  59 };
  60
  61 /*
  62  * ispccdc_lsc - CCDC LSC parameters
  63  */
  64 struct ispccdc_lsc {
  65         enum ispccdc_lsc_state state;
  66         struct work_struct table_work;
  67
  68         /* LSC queue of configurations */
  69         spinlock_t req_lock;
  70         struct ispccdc_lsc_config_req *request; /* requested configuration */
  71         struct ispccdc_lsc_config_req *active;  /* active configuration */
  72         struct list_head free_queue;    /* configurations for freeing */
  73 };
  74
  75 #define CCDC_STOP_NOT_REQUESTED         0x00
  76 #define CCDC_STOP_REQUEST               0x01
  77 #define CCDC_STOP_EXECUTED              (0x02 | CCDC_STOP_REQUEST)
  78 #define CCDC_STOP_CCDC_FINISHED         0x04
  79 #define CCDC_STOP_LSC_FINISHED          0x08
  80 #define CCDC_STOP_FINISHED              \
  81         (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
  82
  83 #define CCDC_EVENT_VD1                  0x10
  84 #define CCDC_EVENT_VD0                  0x20
  85 #define CCDC_EVENT_LSC_DONE             0x40
  86
  87 /* Sink and source CCDC pads */
  88 #define CCDC_PAD_SINK                   0
  89 #define CCDC_PAD_SOURCE_OF              1
  90 #define CCDC_PAD_SOURCE_VP              2
  91 #define CCDC_PADS_NUM                   3
  92
  93 #define CCDC_FIELD_TOP                  1
  94 #define CCDC_FIELD_BOTTOM               2
  95 #define CCDC_FIELD_BOTH                 3
  96
  97 /*
  98  * struct isp_ccdc_device - Structure for the CCDC module to store its own
  99  *                          information
 100  * @subdev: V4L2 subdevice
 101  * @pads: Sink and source media entity pads
 102  * @formats: Active video formats
 103  * @crop: Active crop rectangle on the OF source pad
 104  * @input: Active input
 105  * @output: Active outputs
 106  * @video_out: Output video node
 107  * @alaw: A-law compression enabled (1) or disabled (0)
 108  * @lpf: Low pass filter enabled (1) or disabled (0)
 109  * @obclamp: Optical-black clamp enabled (1) or disabled (0)
 110  * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
 111  * @blcomp: Black level compensation configuration
 112  * @clamp: Optical-black or digital clamp configuration
 113  * @fpc: Faulty pixels correction configuration
 114  * @lsc: Lens shading compensation configuration
 115  * @update: Bitmask of controls to update during the next interrupt
 116  * @shadow_update: Controls update in progress by userspace
 117  * @bt656: Whether the input interface uses BT.656 synchronization
 118  * @fields: The fields (CCDC_FIELD_*) stored in the current buffer
 119  * @underrun: A buffer underrun occurred and a new buffer has been queued
 120  * @state: Streaming state
 121  * @lock: Serializes shadow_update with interrupt handler
 122  * @wait: Wait queue used to stop the module
 123  * @stopping: Stopping state
 124  * @running: Is the CCDC hardware running
 125  * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
 126  */
 127 struct isp_ccdc_device {
 128         struct v4l2_subdev subdev;
 129         struct media_pad pads[CCDC_PADS_NUM];
 130         struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
 131         struct v4l2_rect crop;
 132
 133         enum ccdc_input_entity input;
 134         unsigned int output;
 135         struct isp_video video_out;
 136
 137         unsigned int alaw:1,
 138                      lpf:1,
 139                      obclamp:1,
 140                      fpc_en:1;
 141         struct omap3isp_ccdc_blcomp blcomp;
 142         struct omap3isp_ccdc_bclamp clamp;
 143         struct ispccdc_fpc fpc;
 144         struct ispccdc_lsc lsc;
 145         unsigned int update;
 146         unsigned int shadow_update;
 147
 148         bool bt656;
 149         unsigned int fields;
 150
 151         unsigned int underrun:1;
 152         enum isp_pipeline_stream_state state;
 153         spinlock_t lock;
 154         wait_queue_head_t wait;
 155         unsigned int stopping;
 156         bool running;
 157         struct mutex ioctl_lock;
 158 };
 159
 160 struct isp_device;
 161
 162 int omap3isp_ccdc_init(struct isp_device *isp);
 163 void omap3isp_ccdc_cleanup(struct isp_device *isp);
 164 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
 165         struct v4l2_device *vdev);
 166 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
 167
 168 int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
 169 int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
 170 void omap3isp_ccdc_restore_context(struct isp_device *isp);
 171 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
 172         unsigned int *max_rate);
 173
 174 #endif  /* OMAP3_ISP_CCDC_H */