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Linux/include/linux/atmel-isc-media.h

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Diff markup

Differences between /include/linux/atmel-isc-media.h (Version linux-6.12-rc7) and /include/linux/atmel-isc-media.h (Version linux-4.12.14)


  1 /* SPDX-License-Identifier: GPL-2.0-only */         1 
  2 /*                                                
  3  * Copyright (c) 2019 Microchip Technology Inc    
  4  *                                                
  5  * Author: Eugen Hristev <eugen.hristev@microc    
  6  */                                               
  7                                                   
  8 #ifndef __LINUX_ATMEL_ISC_MEDIA_H__               
  9 #define __LINUX_ATMEL_ISC_MEDIA_H__               
 10                                                   
 11 /*                                                
 12  * There are 8 controls available:                
 13  * 4 gain controls, sliders, for each of the B    
 14  * These gains are multipliers for each compon    
 15  * a default value of 512 (1.0 multiplier).       
 16  * 4 offset controls, sliders, for each of the    
 17  * These offsets are added/substracted from ea    
 18  * 1:12:0 with a default value of 0 (+/- 0)       
 19  *                                                
 20  * To expose this to userspace, added 8 custom    
 21  *                                                
 22  * To summarize the functionality:                
 23  * The auto cluster switch is the auto white b    
 24  * like this:                                     
 25  * AWB == 1: autowhitebalance is on, the do_wh    
 26  * the gains/offsets are inactive, but volatil    
 27  * Thus, the results of the whitebalance algor    
 28  * read at any time.                              
 29  * AWB == 0: autowhitebalance is off, cluster     
 30  * configure the gain/offsets directly.           
 31  * More than that, if the do_white_balance but    
 32  * pressed, the driver will perform one-time-a    
 33  * checker card) and the userspace can read ag    
 34  *                                                
 35  * With this feature, the userspace can save t    
 36  * for example after reboot or reprobing the d    
 37  */                                               
 38                                                   
 39 enum atmel_isc_ctrl_id {                          
 40         /* Red component gain control */          
 41         ISC_CID_R_GAIN = (V4L2_CID_USER_ATMEL_    
 42         /* Blue component gain control */         
 43         ISC_CID_B_GAIN,                           
 44         /* Green Red component gain control */    
 45         ISC_CID_GR_GAIN,                          
 46         /* Green Blue gain control */             
 47         ISC_CID_GB_GAIN,                          
 48         /* Red component offset control */        
 49         ISC_CID_R_OFFSET,                         
 50         /* Blue component offset control */       
 51         ISC_CID_B_OFFSET,                         
 52         /* Green Red component offset control     
 53         ISC_CID_GR_OFFSET,                        
 54         /* Green Blue component offset control    
 55         ISC_CID_GB_OFFSET,                        
 56 };                                                
 57                                                   
 58 #endif                                            
 59                                                   

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