/*
   * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
   *
   * Benoit Parrot <bparrot@ti.com>
   * Lad, Prabhakar <prabhakar.csengg@gmail.com>
   *
   * This program is free software; you may redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; version 2 of the License.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #ifndef AM437X_VPFE_USER_H
  #define AM437X_VPFE_USER_H

  #include <linux/videodev2.h>

  enum vpfe_ccdc_data_size {
  	VPFE_CCDC_DATA_16BITS = 0,
  	VPFE_CCDC_DATA_15BITS,
  	VPFE_CCDC_DATA_14BITS,
  	VPFE_CCDC_DATA_13BITS,
  	VPFE_CCDC_DATA_12BITS,
  	VPFE_CCDC_DATA_11BITS,
  	VPFE_CCDC_DATA_10BITS,
  	VPFE_CCDC_DATA_8BITS,
  };
  
  /* enum for No of pixel per line to be avg. in Black Clamping*/
  enum vpfe_ccdc_sample_length {
  	VPFE_CCDC_SAMPLE_1PIXELS = 0,
  	VPFE_CCDC_SAMPLE_2PIXELS,
  	VPFE_CCDC_SAMPLE_4PIXELS,
  	VPFE_CCDC_SAMPLE_8PIXELS,
  	VPFE_CCDC_SAMPLE_16PIXELS,
  };
  
  /* enum for No of lines in Black Clamping */
  enum vpfe_ccdc_sample_line {
  	VPFE_CCDC_SAMPLE_1LINES = 0,
  	VPFE_CCDC_SAMPLE_2LINES,
  	VPFE_CCDC_SAMPLE_4LINES,
  	VPFE_CCDC_SAMPLE_8LINES,
  	VPFE_CCDC_SAMPLE_16LINES,
  };
  
  /* enum for Alaw gamma width */
  enum vpfe_ccdc_gamma_width {
  	VPFE_CCDC_GAMMA_BITS_15_6 = 0,	/* use bits 15-6 for gamma */
  	VPFE_CCDC_GAMMA_BITS_14_5,
  	VPFE_CCDC_GAMMA_BITS_13_4,
  	VPFE_CCDC_GAMMA_BITS_12_3,
  	VPFE_CCDC_GAMMA_BITS_11_2,
  	VPFE_CCDC_GAMMA_BITS_10_1,
  	VPFE_CCDC_GAMMA_BITS_09_0,	/* use bits 9-0 for gamma */
  };
  
  /* structure for ALaw */
  struct vpfe_ccdc_a_law {
  	/* Enable/disable A-Law */
  	unsigned char enable;
  	/* Gamma Width Input */
  	enum vpfe_ccdc_gamma_width gamma_wd;
  };
  
  /* structure for Black Clamping */
  struct vpfe_ccdc_black_clamp {
  	unsigned char enable;
  	/* only if bClampEnable is TRUE */
  	enum vpfe_ccdc_sample_length sample_pixel;
  	/* only if bClampEnable is TRUE */
  	enum vpfe_ccdc_sample_line sample_ln;
  	/* only if bClampEnable is TRUE */
  	unsigned short start_pixel;
  	/* only if bClampEnable is TRUE */
  	unsigned short sgain;
  	/* only if bClampEnable is FALSE */
  	unsigned short dc_sub;
  };
  
  /* structure for Black Level Compensation */
  struct vpfe_ccdc_black_compensation {
  	/* Constant value to subtract from Red component */
  	char r;
  	/* Constant value to subtract from Gr component */
  	char gr;
  	/* Constant value to subtract from Blue component */
  	char b;
  	/* Constant value to subtract from Gb component */
  	char gb;
  };
  
  /* Structure for CCDC configuration parameters for raw capture mode passed
   * by application
   */
  struct vpfe_ccdc_config_params_raw {
  	/* data size value from 8 to 16 bits */
  	enum vpfe_ccdc_data_size data_sz;
  	/* Structure for Optional A-Law */
  	struct vpfe_ccdc_a_law alaw;
  	/* Structure for Optical Black Clamp */
  	struct vpfe_ccdc_black_clamp blk_clamp;
  	/* Structure for Black Compensation */
  	struct vpfe_ccdc_black_compensation blk_comp;
  };
  
  /*
   *  Private IOCTL
   * VIDIOC_AM437X_CCDC_CFG - Set CCDC configuration for raw capture
   * This is an experimental ioctl that will change in future kernels. So use
   * this ioctl with care !
   **/
  #define VIDIOC_AM437X_CCDC_CFG \
  	_IOW('V', BASE_VIDIOC_PRIVATE + 1, void *)
  
  #endif		/* AM437X_VPFE_USER_H */