drivers/media/video/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 /*
  50  * struct ispccdc_syncif - Structure for Sync Interface between sensor and CCDC
  51  * @ccdc_mastermode: Master mode. 1 - Master, 0 - Slave.
  52  * @fldstat: Field state. 0 - Odd Field, 1 - Even Field.
  53  * @datsz: Data size.
  54  * @fldmode: 0 - Progressive, 1 - Interlaced.
  55  * @datapol: 0 - Positive, 1 - Negative.
  56  * @fldpol: 0 - Positive, 1 - Negative.
  57  * @hdpol: 0 - Positive, 1 - Negative.
  58  * @vdpol: 0 - Positive, 1 - Negative.
  59  * @fldout: 0 - Input, 1 - Output.
  60  * @hs_width: Width of the Horizontal Sync pulse, used for HS/VS Output.
  61  * @vs_width: Width of the Vertical Sync pulse, used for HS/VS Output.
  62  * @ppln: Number of pixels per line, used for HS/VS Output.
  63  * @hlprf: Number of half lines per frame, used for HS/VS Output.
  64  * @bt_r656_en: 1 - Enable ITU-R BT656 mode, 0 - Sync mode.
  65  */
  66 struct ispccdc_syncif {
  67         u8 ccdc_mastermode;
  68         u8 fldstat;
  69         u8 datsz;
  70         u8 fldmode;
  71         u8 datapol;
  72         u8 fldpol;
  73         u8 hdpol;
  74         u8 vdpol;
  75         u8 fldout;
  76         u8 hs_width;
  77         u8 vs_width;
  78         u8 ppln;
  79         u8 hlprf;
  80         u8 bt_r656_en;
  81 };
  82
  83 /*
  84  * struct ispccdc_vp - Structure for Video Port parameters
  85  * @pixelclk: Input pixel clock in Hz
  86  */
  87 struct ispccdc_vp {
  88         unsigned int pixelclk;
  89 };
  90
  91 enum ispccdc_lsc_state {
  92         LSC_STATE_STOPPED = 0,
  93         LSC_STATE_STOPPING = 1,
  94         LSC_STATE_RUNNING = 2,
  95         LSC_STATE_RECONFIG = 3,
  96 };
  97
  98 struct ispccdc_lsc_config_req {
  99         struct list_head list;
 100         struct omap3isp_ccdc_lsc_config config;
 101         unsigned char enable;
 102         u32 table;
 103         struct iovm_struct *iovm;
 104 };
 105
 106 /*
 107  * ispccdc_lsc - CCDC LSC parameters
 108  * @update_config: Set when user changes config
 109  * @request_enable: Whether LSC is requested to be enabled
 110  * @config: LSC config set by user
 111  * @update_table: Set when user provides a new LSC table to table_new
 112  * @table_new: LSC table set by user, ISP address
 113  * @table_inuse: LSC table currently in use, ISP address
 114  */
 115 struct ispccdc_lsc {
 116         enum ispccdc_lsc_state state;
 117         struct work_struct table_work;
 118
 119         /* LSC queue of configurations */
 120         spinlock_t req_lock;
 121         struct ispccdc_lsc_config_req *request; /* requested configuration */
 122         struct ispccdc_lsc_config_req *active;  /* active configuration */
 123         struct list_head free_queue;    /* configurations for freeing */
 124 };
 125
 126 #define CCDC_STOP_NOT_REQUESTED         0x00
 127 #define CCDC_STOP_REQUEST               0x01
 128 #define CCDC_STOP_EXECUTED              (0x02 | CCDC_STOP_REQUEST)
 129 #define CCDC_STOP_CCDC_FINISHED         0x04
 130 #define CCDC_STOP_LSC_FINISHED          0x08
 131 #define CCDC_STOP_FINISHED              \
 132         (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
 133
 134 #define CCDC_EVENT_VD1                  0x10
 135 #define CCDC_EVENT_VD0                  0x20
 136 #define CCDC_EVENT_LSC_DONE             0x40
 137
 138 /* Sink and source CCDC pads */
 139 #define CCDC_PAD_SINK                   0
 140 #define CCDC_PAD_SOURCE_OF              1
 141 #define CCDC_PAD_SOURCE_VP              2
 142 #define CCDC_PADS_NUM                   3
 143
 144 /*
 145  * struct isp_ccdc_device - Structure for the CCDC module to store its own
 146  *                          information
 147  * @subdev: V4L2 subdevice
 148  * @pads: Sink and source media entity pads
 149  * @formats: Active video formats
 150  * @input: Active input
 151  * @output: Active outputs
 152  * @video_out: Output video node
 153  * @error: A hardware error occured during capture
 154  * @alaw: A-law compression enabled (1) or disabled (0)
 155  * @lpf: Low pass filter enabled (1) or disabled (0)
 156  * @obclamp: Optical-black clamp enabled (1) or disabled (0)
 157  * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
 158  * @blcomp: Black level compensation configuration
 159  * @clamp: Optical-black or digital clamp configuration
 160  * @fpc: Faulty pixels correction configuration
 161  * @lsc: Lens shading compensation configuration
 162  * @update: Bitmask of controls to update during the next interrupt
 163  * @shadow_update: Controls update in progress by userspace
 164  * @syncif: Interface synchronization configuration
 165  * @vpcfg: Video port configuration
 166  * @underrun: A buffer underrun occured and a new buffer has been queued
 167  * @state: Streaming state
 168  * @lock: Serializes shadow_update with interrupt handler
 169  * @wait: Wait queue used to stop the module
 170  * @stopping: Stopping state
 171  * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
 172  */
 173 struct isp_ccdc_device {
 174         struct v4l2_subdev subdev;
 175         struct media_pad pads[CCDC_PADS_NUM];
 176         struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
 177
 178         enum ccdc_input_entity input;
 179         unsigned int output;
 180         struct isp_video video_out;
 181         unsigned int error;
 182
 183         unsigned int alaw:1,
 184                      lpf:1,
 185                      obclamp:1,
 186                      fpc_en:1;
 187         struct omap3isp_ccdc_blcomp blcomp;
 188         struct omap3isp_ccdc_bclamp clamp;
 189         struct omap3isp_ccdc_fpc fpc;
 190         struct ispccdc_lsc lsc;
 191         unsigned int update;
 192         unsigned int shadow_update;
 193
 194         struct ispccdc_syncif syncif;
 195         struct ispccdc_vp vpcfg;
 196
 197         unsigned int underrun:1;
 198         enum isp_pipeline_stream_state state;
 199         spinlock_t lock;
 200         wait_queue_head_t wait;
 201         unsigned int stopping;
 202         struct mutex ioctl_lock;
 203 };
 204
 205 struct isp_device;
 206
 207 int omap3isp_ccdc_init(struct isp_device *isp);
 208 void omap3isp_ccdc_cleanup(struct isp_device *isp);
 209 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
 210         struct v4l2_device *vdev);
 211 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
 212
 213 int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
 214 int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
 215 void omap3isp_ccdc_restore_context(struct isp_device *isp);
 216 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
 217         unsigned int *max_rate);
 218
 219 #endif  /* OMAP3_ISP_CCDC_H */