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59f0ad8076
This adds a very simplistic driver to utilize the CSI2A interface inside the ISS subsystem in OMAP4, and dump the data to memory. Check Documentation/video4linux/omap4_camera.txt for details. This commit adds the driver core, registers definitions and documentation. Signed-off-by: Sergio Aguirre <sergio.a.aguirre@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
#ifndef ARCH_ARM_PLAT_OMAP4_ISS_H
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#define ARCH_ARM_PLAT_OMAP4_ISS_H
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#include <linux/i2c.h>
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struct iss_device;
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enum iss_interface_type {
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ISS_INTERFACE_CSI2A_PHY1,
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ISS_INTERFACE_CSI2B_PHY2,
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};
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/**
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* struct iss_csiphy_lane: CSI2 lane position and polarity
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* @pos: position of the lane
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* @pol: polarity of the lane
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*/
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struct iss_csiphy_lane {
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u8 pos;
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u8 pol;
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};
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#define ISS_CSIPHY1_NUM_DATA_LANES 4
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#define ISS_CSIPHY2_NUM_DATA_LANES 1
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/**
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* struct iss_csiphy_lanes_cfg - CSI2 lane configuration
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* @data: Configuration of one or two data lanes
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* @clk: Clock lane configuration
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*/
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struct iss_csiphy_lanes_cfg {
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struct iss_csiphy_lane data[ISS_CSIPHY1_NUM_DATA_LANES];
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struct iss_csiphy_lane clk;
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};
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/**
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* struct iss_csi2_platform_data - CSI2 interface platform data
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* @crc: Enable the cyclic redundancy check
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* @vpclk_div: Video port output clock control
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*/
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struct iss_csi2_platform_data {
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unsigned crc:1;
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unsigned vpclk_div:2;
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struct iss_csiphy_lanes_cfg lanecfg;
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};
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struct iss_subdev_i2c_board_info {
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struct i2c_board_info *board_info;
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int i2c_adapter_id;
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};
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struct iss_v4l2_subdevs_group {
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struct iss_subdev_i2c_board_info *subdevs;
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enum iss_interface_type interface;
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union {
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struct iss_csi2_platform_data csi2;
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} bus; /* gcc < 4.6.0 chokes on anonymous union initializers */
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};
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struct iss_platform_data {
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struct iss_v4l2_subdevs_group *subdevs;
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void (*set_constraints)(struct iss_device *iss, bool enable);
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};
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#endif
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