include/media/omap3isp.h

   1 /*
   2  * omap3isp.h
   3  *
   4  * TI OMAP3 ISP - Platform data
   5  *
   6  * Copyright (C) 2011 Nokia Corporation
   7  *
   8  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
   9  *           Sakari Ailus <sakari.ailus@iki.fi>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  23  * 02110-1301 USA
  24  */
  25
  26 #ifndef __MEDIA_OMAP3ISP_H__
  27 #define __MEDIA_OMAP3ISP_H__
  28
  29 struct i2c_board_info;
  30 struct isp_device;
  31
  32 enum isp_interface_type {
  33         ISP_INTERFACE_PARALLEL,
  34         ISP_INTERFACE_CSI2A_PHY2,
  35         ISP_INTERFACE_CCP2B_PHY1,
  36         ISP_INTERFACE_CCP2B_PHY2,
  37         ISP_INTERFACE_CSI2C_PHY1,
  38 };
  39
  40 enum {
  41         ISP_LANE_SHIFT_0 = 0,
  42         ISP_LANE_SHIFT_2 = 1,
  43         ISP_LANE_SHIFT_4 = 2,
  44         ISP_LANE_SHIFT_6 = 3,
  45 };
  46
  47 /**
  48  * struct isp_parallel_cfg - Parallel interface configuration
  49  * @data_lane_shift: Data lane shifter
  50  *              ISP_LANE_SHIFT_0 - CAMEXT[13:0] -> CAM[13:0]
  51  *              ISP_LANE_SHIFT_2 - CAMEXT[13:2] -> CAM[11:0]
  52  *              ISP_LANE_SHIFT_4 - CAMEXT[13:4] -> CAM[9:0]
  53  *              ISP_LANE_SHIFT_6 - CAMEXT[13:6] -> CAM[7:0]
  54  * @clk_pol: Pixel clock polarity
  55  *              0 - Sample on rising edge, 1 - Sample on falling edge
  56  * @hs_pol: Horizontal synchronization polarity
  57  *              0 - Active high, 1 - Active low
  58  * @vs_pol: Vertical synchronization polarity
  59  *              0 - Active high, 1 - Active low
  60  * @fld_pol: Field signal polarity
  61  *              0 - Positive, 1 - Negative
  62  * @data_pol: Data polarity
  63  *              0 - Normal, 1 - One's complement
  64  */
  65 struct isp_parallel_cfg {
  66         unsigned int data_lane_shift:2;
  67         unsigned int clk_pol:1;
  68         unsigned int hs_pol:1;
  69         unsigned int vs_pol:1;
  70         unsigned int fld_pol:1;
  71         unsigned int data_pol:1;
  72 };
  73
  74 enum {
  75         ISP_CCP2_PHY_DATA_CLOCK = 0,
  76         ISP_CCP2_PHY_DATA_STROBE = 1,
  77 };
  78
  79 enum {
  80         ISP_CCP2_MODE_MIPI = 0,
  81         ISP_CCP2_MODE_CCP2 = 1,
  82 };
  83
  84 /**
  85  * struct isp_csiphy_lane: CCP2/CSI2 lane position and polarity
  86  * @pos: position of the lane
  87  * @pol: polarity of the lane
  88  */
  89 struct isp_csiphy_lane {
  90         u8 pos;
  91         u8 pol;
  92 };
  93
  94 #define ISP_CSIPHY1_NUM_DATA_LANES      1
  95 #define ISP_CSIPHY2_NUM_DATA_LANES      2
  96
  97 /**
  98  * struct isp_csiphy_lanes_cfg - CCP2/CSI2 lane configuration
  99  * @data: Configuration of one or two data lanes
 100  * @clk: Clock lane configuration
 101  */
 102 struct isp_csiphy_lanes_cfg {
 103         struct isp_csiphy_lane data[ISP_CSIPHY2_NUM_DATA_LANES];
 104         struct isp_csiphy_lane clk;
 105 };
 106
 107 /**
 108  * struct isp_ccp2_cfg - CCP2 interface configuration
 109  * @strobe_clk_pol: Strobe/clock polarity
 110  *              0 - Non Inverted, 1 - Inverted
 111  * @crc: Enable the cyclic redundancy check
 112  * @ccp2_mode: Enable CCP2 compatibility mode
 113  *              ISP_CCP2_MODE_MIPI - MIPI-CSI1 mode
 114  *              ISP_CCP2_MODE_CCP2 - CCP2 mode
 115  * @phy_layer: Physical layer selection
 116  *              ISP_CCP2_PHY_DATA_CLOCK - Data/clock physical layer
 117  *              ISP_CCP2_PHY_DATA_STROBE - Data/strobe physical layer
 118  * @vpclk_div: Video port output clock control
 119  */
 120 struct isp_ccp2_cfg {
 121         unsigned int strobe_clk_pol:1;
 122         unsigned int crc:1;
 123         unsigned int ccp2_mode:1;
 124         unsigned int phy_layer:1;
 125         unsigned int vpclk_div:2;
 126         struct isp_csiphy_lanes_cfg lanecfg;
 127 };
 128
 129 /**
 130  * struct isp_csi2_cfg - CSI2 interface configuration
 131  * @crc: Enable the cyclic redundancy check
 132  */
 133 struct isp_csi2_cfg {
 134         unsigned crc:1;
 135         struct isp_csiphy_lanes_cfg lanecfg;
 136 };
 137
 138 struct isp_bus_cfg {
 139         enum isp_interface_type interface;
 140         union {
 141                 struct isp_parallel_cfg parallel;
 142                 struct isp_ccp2_cfg ccp2;
 143                 struct isp_csi2_cfg csi2;
 144         } bus; /* gcc < 4.6.0 chokes on anonymous union initializers */
 145 };
 146
 147 struct isp_platform_subdev {
 148         struct i2c_board_info *board_info;
 149         int i2c_adapter_id;
 150         struct isp_bus_cfg *bus;
 151 };
 152
 153 struct isp_platform_data {
 154         struct isp_platform_subdev *subdevs;
 155         void (*set_constraints)(struct isp_device *isp, bool enable);
 156 };
 157
 158 #endif  /* __MEDIA_OMAP3ISP_H__ */