include/media/atmel-isi.h

   1 /*
   2  * Register definitions for the Atmel Image Sensor Interface.
   3  *
   4  * Copyright (C) 2011 Atmel Corporation
   5  * Josh Wu, <josh.wu@atmel.com>
   6  *
   7  * Based on previous work by Lars Haring, <lars.haring@atmel.com>
   8  * and Sedji Gaouaou
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14 #ifndef __ATMEL_ISI_H__
  15 #define __ATMEL_ISI_H__
  16
  17 #include <linux/types.h>
  18
  19 /* ISI_V2 register offsets */
  20 #define ISI_CFG1                                0x0000
  21 #define ISI_CFG2                                0x0004
  22 #define ISI_PSIZE                               0x0008
  23 #define ISI_PDECF                               0x000c
  24 #define ISI_Y2R_SET0                            0x0010
  25 #define ISI_Y2R_SET1                            0x0014
  26 #define ISI_R2Y_SET0                            0x0018
  27 #define ISI_R2Y_SET1                            0x001C
  28 #define ISI_R2Y_SET2                            0x0020
  29 #define ISI_CTRL                                0x0024
  30 #define ISI_STATUS                              0x0028
  31 #define ISI_INTEN                               0x002C
  32 #define ISI_INTDIS                              0x0030
  33 #define ISI_INTMASK                             0x0034
  34 #define ISI_DMA_CHER                            0x0038
  35 #define ISI_DMA_CHDR                            0x003C
  36 #define ISI_DMA_CHSR                            0x0040
  37 #define ISI_DMA_P_ADDR                          0x0044
  38 #define ISI_DMA_P_CTRL                          0x0048
  39 #define ISI_DMA_P_DSCR                          0x004C
  40 #define ISI_DMA_C_ADDR                          0x0050
  41 #define ISI_DMA_C_CTRL                          0x0054
  42 #define ISI_DMA_C_DSCR                          0x0058
  43
  44 /* Bitfields in CFG1 */
  45 #define ISI_CFG1_HSYNC_POL_ACTIVE_LOW           (1 << 2)
  46 #define ISI_CFG1_VSYNC_POL_ACTIVE_LOW           (1 << 3)
  47 #define ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING      (1 << 4)
  48 #define ISI_CFG1_EMB_SYNC                       (1 << 6)
  49 #define ISI_CFG1_CRC_SYNC                       (1 << 7)
  50 /* Constants for FRATE(ISI_V2) */
  51 #define         ISI_CFG1_FRATE_CAPTURE_ALL      (0 << 8)
  52 #define         ISI_CFG1_FRATE_DIV_2            (1 << 8)
  53 #define         ISI_CFG1_FRATE_DIV_3            (2 << 8)
  54 #define         ISI_CFG1_FRATE_DIV_4            (3 << 8)
  55 #define         ISI_CFG1_FRATE_DIV_5            (4 << 8)
  56 #define         ISI_CFG1_FRATE_DIV_6            (5 << 8)
  57 #define         ISI_CFG1_FRATE_DIV_7            (6 << 8)
  58 #define         ISI_CFG1_FRATE_DIV_8            (7 << 8)
  59 #define         ISI_CFG1_FRATE_DIV_MASK         (7 << 8)
  60 #define ISI_CFG1_DISCR                          (1 << 11)
  61 #define ISI_CFG1_FULL_MODE                      (1 << 12)
  62 /* Definition for THMASK(ISI_V2) */
  63 #define         ISI_CFG1_THMASK_BEATS_4         (0 << 13)
  64 #define         ISI_CFG1_THMASK_BEATS_8         (1 << 13)
  65 #define         ISI_CFG1_THMASK_BEATS_16        (2 << 13)
  66
  67 /* Bitfields in CFG2 */
  68 #define ISI_CFG2_GRAYSCALE                      (1 << 13)
  69 /* Constants for YCC_SWAP(ISI_V2) */
  70 #define         ISI_CFG2_YCC_SWAP_DEFAULT       (0 << 28)
  71 #define         ISI_CFG2_YCC_SWAP_MODE_1        (1 << 28)
  72 #define         ISI_CFG2_YCC_SWAP_MODE_2        (2 << 28)
  73 #define         ISI_CFG2_YCC_SWAP_MODE_3        (3 << 28)
  74 #define         ISI_CFG2_YCC_SWAP_MODE_MASK     (3 << 28)
  75 #define ISI_CFG2_IM_VSIZE_OFFSET                0
  76 #define ISI_CFG2_IM_HSIZE_OFFSET                16
  77 #define ISI_CFG2_IM_VSIZE_MASK          (0x7FF << ISI_CFG2_IM_VSIZE_OFFSET)
  78 #define ISI_CFG2_IM_HSIZE_MASK          (0x7FF << ISI_CFG2_IM_HSIZE_OFFSET)
  79
  80 /* Bitfields in CTRL */
  81 /* Also using in SR(ISI_V2) */
  82 #define ISI_CTRL_EN                             (1 << 0)
  83 #define ISI_CTRL_CDC                            (1 << 8)
  84 /* Also using in SR/IER/IDR/IMR(ISI_V2) */
  85 #define ISI_CTRL_DIS                            (1 << 1)
  86 #define ISI_CTRL_SRST                           (1 << 2)
  87
  88 /* Bitfields in SR */
  89 #define ISI_SR_SIP                              (1 << 19)
  90 /* Also using in SR/IER/IDR/IMR */
  91 #define ISI_SR_VSYNC                            (1 << 10)
  92 #define ISI_SR_PXFR_DONE                        (1 << 16)
  93 #define ISI_SR_CXFR_DONE                        (1 << 17)
  94 #define ISI_SR_P_OVR                            (1 << 24)
  95 #define ISI_SR_C_OVR                            (1 << 25)
  96 #define ISI_SR_CRC_ERR                          (1 << 26)
  97 #define ISI_SR_FR_OVR                           (1 << 27)
  98
  99 /* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
 100 #define ISI_DMA_CTRL_FETCH                      (1 << 0)
 101 #define ISI_DMA_CTRL_WB                         (1 << 1)
 102 #define ISI_DMA_CTRL_IEN                        (1 << 2)
 103 #define ISI_DMA_CTRL_DONE                       (1 << 3)
 104
 105 /* Bitfields in DMA_CHSR/CHER/CHDR */
 106 #define ISI_DMA_CHSR_P_CH                       (1 << 0)
 107 #define ISI_DMA_CHSR_C_CH                       (1 << 1)
 108
 109 /* Definition for isi_platform_data */
 110 #define ISI_DATAWIDTH_8                         0x01
 111 #define ISI_DATAWIDTH_10                        0x02
 112
 113 struct v4l2_async_subdev;
 114
 115 struct isi_platform_data {
 116         u8 has_emb_sync;
 117         u8 emb_crc_sync;
 118         u8 hsync_act_low;
 119         u8 vsync_act_low;
 120         u8 pclk_act_falling;
 121         u8 full_mode;
 122         u32 data_width_flags;
 123         /* Using for ISI_CFG1 */
 124         u32 frate;
 125         /* Using for ISI_MCK */
 126         u32 mck_hz;
 127         struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
 128         int *asd_sizes;         /* 0-terminated array of asd group sizes */
 129 };
 130
 131 #endif /* __ATMEL_ISI_H__ */