drivers/media/platform/omap3isp/omap3isp.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * omap3isp.h
   4  *
   5  * TI OMAP3 ISP - Bus Configuration
   6  *
   7  * Copyright (C) 2011 Nokia Corporation
   8  *
   9  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  10  *           Sakari Ailus <sakari.ailus@iki.fi>
  11  */
  12
  13 #ifndef __OMAP3ISP_H__
  14 #define __OMAP3ISP_H__
  15
  16 enum isp_interface_type {
  17         ISP_INTERFACE_PARALLEL,
  18         ISP_INTERFACE_CSI2A_PHY2,
  19         ISP_INTERFACE_CCP2B_PHY1,
  20         ISP_INTERFACE_CCP2B_PHY2,
  21         ISP_INTERFACE_CSI2C_PHY1,
  22 };
  23
  24 /**
  25  * struct isp_parallel_cfg - Parallel interface configuration
  26  * @data_lane_shift: Data lane shifter
  27  *              0 - CAMEXT[13:0] -> CAM[13:0]
  28  *              2 - CAMEXT[13:2] -> CAM[11:0]
  29  *              4 - CAMEXT[13:4] -> CAM[9:0]
  30  *              6 - CAMEXT[13:6] -> CAM[7:0]
  31  * @clk_pol: Pixel clock polarity
  32  *              0 - Sample on rising edge, 1 - Sample on falling edge
  33  * @hs_pol: Horizontal synchronization polarity
  34  *              0 - Active high, 1 - Active low
  35  * @vs_pol: Vertical synchronization polarity
  36  *              0 - Active high, 1 - Active low
  37  * @fld_pol: Field signal polarity
  38  *              0 - Positive, 1 - Negative
  39  * @data_pol: Data polarity
  40  *              0 - Normal, 1 - One's complement
  41  * @bt656: Data contain BT.656 embedded synchronization
  42  */
  43 struct isp_parallel_cfg {
  44         unsigned int data_lane_shift:3;
  45         unsigned int clk_pol:1;
  46         unsigned int hs_pol:1;
  47         unsigned int vs_pol:1;
  48         unsigned int fld_pol:1;
  49         unsigned int data_pol:1;
  50         unsigned int bt656:1;
  51 };
  52
  53 enum {
  54         ISP_CCP2_PHY_DATA_CLOCK = 0,
  55         ISP_CCP2_PHY_DATA_STROBE = 1,
  56 };
  57
  58 enum {
  59         ISP_CCP2_MODE_MIPI = 0,
  60         ISP_CCP2_MODE_CCP2 = 1,
  61 };
  62
  63 /**
  64  * struct isp_csiphy_lane: CCP2/CSI2 lane position and polarity
  65  * @pos: position of the lane
  66  * @pol: polarity of the lane
  67  */
  68 struct isp_csiphy_lane {
  69         u8 pos;
  70         u8 pol;
  71 };
  72
  73 #define ISP_CSIPHY1_NUM_DATA_LANES      1
  74 #define ISP_CSIPHY2_NUM_DATA_LANES      2
  75
  76 /**
  77  * struct isp_csiphy_lanes_cfg - CCP2/CSI2 lane configuration
  78  * @data: Configuration of one or two data lanes
  79  * @clk: Clock lane configuration
  80  */
  81 struct isp_csiphy_lanes_cfg {
  82         struct isp_csiphy_lane data[ISP_CSIPHY2_NUM_DATA_LANES];
  83         struct isp_csiphy_lane clk;
  84 };
  85
  86 /**
  87  * struct isp_ccp2_cfg - CCP2 interface configuration
  88  * @strobe_clk_pol: Strobe/clock polarity
  89  *              0 - Non Inverted, 1 - Inverted
  90  * @crc: Enable the cyclic redundancy check
  91  * @ccp2_mode: Enable CCP2 compatibility mode
  92  *              ISP_CCP2_MODE_MIPI - MIPI-CSI1 mode
  93  *              ISP_CCP2_MODE_CCP2 - CCP2 mode
  94  * @phy_layer: Physical layer selection
  95  *              ISP_CCP2_PHY_DATA_CLOCK - Data/clock physical layer
  96  *              ISP_CCP2_PHY_DATA_STROBE - Data/strobe physical layer
  97  * @vpclk_div: Video port output clock control
  98  */
  99 struct isp_ccp2_cfg {
 100         unsigned int strobe_clk_pol:1;
 101         unsigned int crc:1;
 102         unsigned int ccp2_mode:1;
 103         unsigned int phy_layer:1;
 104         unsigned int vpclk_div:2;
 105         unsigned int vp_clk_pol:1;
 106         struct isp_csiphy_lanes_cfg lanecfg;
 107 };
 108
 109 /**
 110  * struct isp_csi2_cfg - CSI2 interface configuration
 111  * @crc: Enable the cyclic redundancy check
 112  * @lanecfg: CSI-2 lane configuration
 113  * @num_data_lanes: The number of data lanes in use
 114  */
 115 struct isp_csi2_cfg {
 116         unsigned crc:1;
 117         struct isp_csiphy_lanes_cfg lanecfg;
 118         u8 num_data_lanes;
 119 };
 120
 121 struct isp_bus_cfg {
 122         enum isp_interface_type interface;
 123         union {
 124                 struct isp_parallel_cfg parallel;
 125                 struct isp_ccp2_cfg ccp2;
 126                 struct isp_csi2_cfg csi2;
 127         } bus; /* gcc < 4.6.0 chokes on anonymous union initializers */
 128 };
 129
 130 #endif  /* __OMAP3ISP_H__ */