1 /* 2 * TI OMAP4 ISS V4L2 Driver - CSI2 module 3 * 4 * Copyright (C) 2012 Texas Instruments, Inc. 5 * 6 * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef OMAP4_ISS_CSI2_H 15 #define OMAP4_ISS_CSI2_H 16 17 #include <linux/types.h> 18 #include <linux/videodev2.h> 19 20 #include "iss_video.h" 21 22 struct iss_csiphy; 23 24 /* This is not an exhaustive list */ 25 enum iss_csi2_pix_formats { 26 CSI2_PIX_FMT_OTHERS = 0, 27 CSI2_PIX_FMT_YUV422_8BIT = 0x1e, 28 CSI2_PIX_FMT_YUV422_8BIT_VP = 0x9e, 29 CSI2_PIX_FMT_YUV422_8BIT_VP16 = 0xde, 30 CSI2_PIX_FMT_RAW10_EXP16 = 0xab, 31 CSI2_PIX_FMT_RAW10_EXP16_VP = 0x12f, 32 CSI2_PIX_FMT_RAW8 = 0x2a, 33 CSI2_PIX_FMT_RAW8_DPCM10_EXP16 = 0x2aa, 34 CSI2_PIX_FMT_RAW8_DPCM10_VP = 0x32a, 35 CSI2_PIX_FMT_RAW8_VP = 0x12a, 36 CSI2_USERDEF_8BIT_DATA1_DPCM10_VP = 0x340, 37 CSI2_USERDEF_8BIT_DATA1_DPCM10 = 0x2c0, 38 CSI2_USERDEF_8BIT_DATA1 = 0x40, 39 }; 40 41 enum iss_csi2_irqevents { 42 OCP_ERR_IRQ = 0x4000, 43 SHORT_PACKET_IRQ = 0x2000, 44 ECC_CORRECTION_IRQ = 0x1000, 45 ECC_NO_CORRECTION_IRQ = 0x800, 46 COMPLEXIO2_ERR_IRQ = 0x400, 47 COMPLEXIO1_ERR_IRQ = 0x200, 48 FIFO_OVF_IRQ = 0x100, 49 CONTEXT7 = 0x80, 50 CONTEXT6 = 0x40, 51 CONTEXT5 = 0x20, 52 CONTEXT4 = 0x10, 53 CONTEXT3 = 0x8, 54 CONTEXT2 = 0x4, 55 CONTEXT1 = 0x2, 56 CONTEXT0 = 0x1, 57 }; 58 59 enum iss_csi2_ctx_irqevents { 60 CTX_ECC_CORRECTION = 0x100, 61 CTX_LINE_NUMBER = 0x80, 62 CTX_FRAME_NUMBER = 0x40, 63 CTX_CS = 0x20, 64 CTX_LE = 0x8, 65 CTX_LS = 0x4, 66 CTX_FE = 0x2, 67 CTX_FS = 0x1, 68 }; 69 70 enum iss_csi2_frame_mode { 71 ISS_CSI2_FRAME_IMMEDIATE, 72 ISS_CSI2_FRAME_AFTERFEC, 73 }; 74 75 #define ISS_CSI2_MAX_CTX_NUM 7 76 77 struct iss_csi2_ctx_cfg { 78 u8 ctxnum; /* context number 0 - 7 */ 79 u8 dpcm_decompress; 80 81 /* Fields in CSI2_CTx_CTRL2 - locked by CSI2_CTx_CTRL1.CTX_EN */ 82 u8 virtual_id; 83 u16 format_id; /* as in CSI2_CTx_CTRL2[9:0] */ 84 u8 dpcm_predictor; /* 1: simple, 0: advanced */ 85 u16 frame; 86 87 /* Fields in CSI2_CTx_CTRL1/3 - Shadowed */ 88 u16 alpha; 89 u16 data_offset; 90 u32 ping_addr; 91 u32 pong_addr; 92 u8 eof_enabled; 93 u8 eol_enabled; 94 u8 checksum_enabled; 95 u8 enabled; 96 }; 97 98 struct iss_csi2_timing_cfg { 99 u8 ionum; /* IO1 or IO2 as in CSI2_TIMING */ 100 unsigned force_rx_mode:1; 101 unsigned stop_state_16x:1; 102 unsigned stop_state_4x:1; 103 u16 stop_state_counter; 104 }; 105 106 struct iss_csi2_ctrl_cfg { 107 bool vp_clk_enable; 108 bool vp_only_enable; 109 u8 vp_out_ctrl; 110 enum iss_csi2_frame_mode frame_mode; 111 bool ecc_enable; 112 bool if_enable; 113 }; 114 115 #define CSI2_PAD_SINK 0 116 #define CSI2_PAD_SOURCE 1 117 #define CSI2_PADS_NUM 2 118 119 #define CSI2_OUTPUT_IPIPEIF BIT(0) 120 #define CSI2_OUTPUT_MEMORY BIT(1) 121 122 struct iss_csi2_device { 123 struct v4l2_subdev subdev; 124 struct media_pad pads[CSI2_PADS_NUM]; 125 struct v4l2_mbus_framefmt formats[CSI2_PADS_NUM]; 126 127 struct iss_video video_out; 128 struct iss_device *iss; 129 130 u8 available; /* Is the IP present on the silicon? */ 131 132 /* memory resources, as defined in enum iss_mem_resources */ 133 unsigned int regs1; 134 unsigned int regs2; 135 /* ISP subclock, as defined in enum iss_isp_subclk_resource */ 136 unsigned int subclk; 137 138 u32 output; /* output to IPIPEIF, memory or both? */ 139 bool dpcm_decompress; 140 unsigned int frame_skip; 141 142 struct iss_csiphy *phy; 143 struct iss_csi2_ctx_cfg contexts[ISS_CSI2_MAX_CTX_NUM + 1]; 144 struct iss_csi2_timing_cfg timing[2]; 145 struct iss_csi2_ctrl_cfg ctrl; 146 enum iss_pipeline_stream_state state; 147 wait_queue_head_t wait; 148 atomic_t stopping; 149 }; 150 151 void omap4iss_csi2_isr(struct iss_csi2_device *csi2); 152 int omap4iss_csi2_reset(struct iss_csi2_device *csi2); 153 int omap4iss_csi2_init(struct iss_device *iss); 154 int omap4iss_csi2_create_links(struct iss_device *iss); 155 void omap4iss_csi2_cleanup(struct iss_device *iss); 156 void omap4iss_csi2_unregister_entities(struct iss_csi2_device *csi2); 157 int omap4iss_csi2_register_entities(struct iss_csi2_device *csi2, 158 struct v4l2_device *vdev); 159 #endif /* OMAP4_ISS_CSI2_H */ 160