drivers/media/platform/omap3isp/ispccdc.h

   1 /*
   2  * ispccdc.h
   3  *
   4  * TI OMAP3 ISP - CCDC module
   5  *
   6  * Copyright (C) 2009-2010 Nokia Corporation
   7  * Copyright (C) 2009 Texas Instruments, Inc.
   8  *
   9  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  10  *           Sakari Ailus <sakari.ailus@iki.fi>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  24  * 02110-1301 USA
  25  */
  26
  27 #ifndef OMAP3_ISP_CCDC_H
  28 #define OMAP3_ISP_CCDC_H
  29
  30 #include <linux/omap3isp.h>
  31 #include <linux/workqueue.h>
  32
  33 #include "ispvideo.h"
  34
  35 enum ccdc_input_entity {
  36         CCDC_INPUT_NONE,
  37         CCDC_INPUT_PARALLEL,
  38         CCDC_INPUT_CSI2A,
  39         CCDC_INPUT_CCP2B,
  40         CCDC_INPUT_CSI2C
  41 };
  42
  43 #define CCDC_OUTPUT_MEMORY      (1 << 0)
  44 #define CCDC_OUTPUT_PREVIEW     (1 << 1)
  45 #define CCDC_OUTPUT_RESIZER     (1 << 2)
  46
  47 #define OMAP3ISP_CCDC_NEVENTS   16
  48
  49 enum ispccdc_lsc_state {
  50         LSC_STATE_STOPPED = 0,
  51         LSC_STATE_STOPPING = 1,
  52         LSC_STATE_RUNNING = 2,
  53         LSC_STATE_RECONFIG = 3,
  54 };
  55
  56 struct ispccdc_lsc_config_req {
  57         struct list_head list;
  58         struct omap3isp_ccdc_lsc_config config;
  59         unsigned char enable;
  60         u32 table;
  61         struct iovm_struct *iovm;
  62 };
  63
  64 /*
  65  * ispccdc_lsc - CCDC LSC parameters
  66  * @update_config: Set when user changes config
  67  * @request_enable: Whether LSC is requested to be enabled
  68  * @config: LSC config set by user
  69  * @update_table: Set when user provides a new LSC table to table_new
  70  * @table_new: LSC table set by user, ISP address
  71  * @table_inuse: LSC table currently in use, ISP address
  72  */
  73 struct ispccdc_lsc {
  74         enum ispccdc_lsc_state state;
  75         struct work_struct table_work;
  76
  77         /* LSC queue of configurations */
  78         spinlock_t req_lock;
  79         struct ispccdc_lsc_config_req *request; /* requested configuration */
  80         struct ispccdc_lsc_config_req *active;  /* active configuration */
  81         struct list_head free_queue;    /* configurations for freeing */
  82 };
  83
  84 #define CCDC_STOP_NOT_REQUESTED         0x00
  85 #define CCDC_STOP_REQUEST               0x01
  86 #define CCDC_STOP_EXECUTED              (0x02 | CCDC_STOP_REQUEST)
  87 #define CCDC_STOP_CCDC_FINISHED         0x04
  88 #define CCDC_STOP_LSC_FINISHED          0x08
  89 #define CCDC_STOP_FINISHED              \
  90         (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
  91
  92 #define CCDC_EVENT_VD1                  0x10
  93 #define CCDC_EVENT_VD0                  0x20
  94 #define CCDC_EVENT_LSC_DONE             0x40
  95
  96 /* Sink and source CCDC pads */
  97 #define CCDC_PAD_SINK                   0
  98 #define CCDC_PAD_SOURCE_OF              1
  99 #define CCDC_PAD_SOURCE_VP              2
 100 #define CCDC_PADS_NUM                   3
 101
 102 /*
 103  * struct isp_ccdc_device - Structure for the CCDC module to store its own
 104  *                          information
 105  * @subdev: V4L2 subdevice
 106  * @pads: Sink and source media entity pads
 107  * @formats: Active video formats
 108  * @crop: Active crop rectangle on the OF source pad
 109  * @input: Active input
 110  * @output: Active outputs
 111  * @video_out: Output video node
 112  * @alaw: A-law compression enabled (1) or disabled (0)
 113  * @lpf: Low pass filter enabled (1) or disabled (0)
 114  * @obclamp: Optical-black clamp enabled (1) or disabled (0)
 115  * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
 116  * @blcomp: Black level compensation configuration
 117  * @clamp: Optical-black or digital clamp configuration
 118  * @fpc: Faulty pixels correction configuration
 119  * @lsc: Lens shading compensation configuration
 120  * @update: Bitmask of controls to update during the next interrupt
 121  * @shadow_update: Controls update in progress by userspace
 122  * @underrun: A buffer underrun occurred and a new buffer has been queued
 123  * @state: Streaming state
 124  * @lock: Serializes shadow_update with interrupt handler
 125  * @wait: Wait queue used to stop the module
 126  * @stopping: Stopping state
 127  * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
 128  */
 129 struct isp_ccdc_device {
 130         struct v4l2_subdev subdev;
 131         struct media_pad pads[CCDC_PADS_NUM];
 132         struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
 133         struct v4l2_rect crop;
 134
 135         enum ccdc_input_entity input;
 136         unsigned int output;
 137         struct isp_video video_out;
 138
 139         unsigned int alaw:1,
 140                      lpf:1,
 141                      obclamp:1,
 142                      fpc_en:1;
 143         struct omap3isp_ccdc_blcomp blcomp;
 144         struct omap3isp_ccdc_bclamp clamp;
 145         struct omap3isp_ccdc_fpc fpc;
 146         struct ispccdc_lsc lsc;
 147         unsigned int update;
 148         unsigned int shadow_update;
 149
 150         unsigned int underrun:1;
 151         enum isp_pipeline_stream_state state;
 152         spinlock_t lock;
 153         wait_queue_head_t wait;
 154         unsigned int stopping;
 155         struct mutex ioctl_lock;
 156 };
 157
 158 struct isp_device;
 159
 160 int omap3isp_ccdc_init(struct isp_device *isp);
 161 void omap3isp_ccdc_cleanup(struct isp_device *isp);
 162 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
 163         struct v4l2_device *vdev);
 164 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
 165
 166 int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
 167 int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
 168 void omap3isp_ccdc_restore_context(struct isp_device *isp);
 169 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
 170         unsigned int *max_rate);
 171
 172 #endif  /* OMAP3_ISP_CCDC_H */