1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * camss-csid.h 4 * 5 * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module 6 * 7 * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. 8 * Copyright (C) 2015-2018 Linaro Ltd. 9 */ 10 #ifndef QC_MSM_CAMSS_CSID_H 11 #define QC_MSM_CAMSS_CSID_H 12 13 #include <linux/clk.h> 14 #include <linux/interrupt.h> 15 #include <media/media-entity.h> 16 #include <media/v4l2-ctrls.h> 17 #include <media/v4l2-device.h> 18 #include <media/v4l2-mediabus.h> 19 #include <media/v4l2-subdev.h> 20 21 #define MSM_CSID_PAD_SINK 0 22 #define MSM_CSID_PAD_SRC 1 23 #define MSM_CSID_PADS_NUM 2 24 25 #define DATA_TYPE_EMBEDDED_DATA_8BIT 0x12 26 #define DATA_TYPE_YUV420_8BIT 0x18 27 #define DATA_TYPE_YUV420_10BIT 0x19 28 #define DATA_TYPE_YUV420_8BIT_LEGACY 0x1a 29 #define DATA_TYPE_YUV420_8BIT_SHIFTED 0x1c /* Chroma Shifted Pixel Sampling */ 30 #define DATA_TYPE_YUV420_10BIT_SHIFTED 0x1d /* Chroma Shifted Pixel Sampling */ 31 #define DATA_TYPE_YUV422_8BIT 0x1e 32 #define DATA_TYPE_YUV422_10BIT 0x1f 33 #define DATA_TYPE_RGB444 0x20 34 #define DATA_TYPE_RGB555 0x21 35 #define DATA_TYPE_RGB565 0x22 36 #define DATA_TYPE_RGB666 0x23 37 #define DATA_TYPE_RGB888 0x24 38 #define DATA_TYPE_RAW_24BIT 0x27 39 #define DATA_TYPE_RAW_6BIT 0x28 40 #define DATA_TYPE_RAW_7BIT 0x29 41 #define DATA_TYPE_RAW_8BIT 0x2a 42 #define DATA_TYPE_RAW_10BIT 0x2b 43 #define DATA_TYPE_RAW_12BIT 0x2c 44 #define DATA_TYPE_RAW_14BIT 0x2d 45 #define DATA_TYPE_RAW_16BIT 0x2e 46 #define DATA_TYPE_RAW_20BIT 0x2f 47 48 #define CSID_RESET_TIMEOUT_MS 500 49 50 enum csid_testgen_mode { 51 CSID_PAYLOAD_MODE_DISABLED = 0, 52 CSID_PAYLOAD_MODE_INCREMENTING = 1, 53 CSID_PAYLOAD_MODE_ALTERNATING_55_AA = 2, 54 CSID_PAYLOAD_MODE_ALL_ZEROES = 3, 55 CSID_PAYLOAD_MODE_ALL_ONES = 4, 56 CSID_PAYLOAD_MODE_RANDOM = 5, 57 CSID_PAYLOAD_MODE_USER_SPECIFIED = 6, 58 CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1 = 6, /* excluding disabled */ 59 CSID_PAYLOAD_MODE_COMPLEX_PATTERN = 7, 60 CSID_PAYLOAD_MODE_COLOR_BOX = 8, 61 CSID_PAYLOAD_MODE_COLOR_BARS = 9, 62 CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2 = 9, /* excluding disabled */ 63 }; 64 65 struct csid_format { 66 u32 code; 67 u8 data_type; 68 u8 decode_format; 69 u8 bpp; 70 u8 spp; /* bus samples per pixel */ 71 }; 72 73 struct csid_testgen_config { 74 enum csid_testgen_mode mode; 75 const char * const*modes; 76 u8 nmodes; 77 u8 enabled; 78 }; 79 80 struct csid_phy_config { 81 u8 csiphy_id; 82 u8 lane_cnt; 83 u32 lane_assign; 84 }; 85 86 struct csid_device; 87 88 struct csid_hw_ops { 89 /* 90 * configure_stream - Configures and starts CSID input stream 91 * @csid: CSID device 92 */ 93 void (*configure_stream)(struct csid_device *csid, u8 enable); 94 95 /* 96 * configure_testgen_pattern - Validates and configures output pattern mode 97 * of test pattern generator 98 * @csid: CSID device 99 */ 100 int (*configure_testgen_pattern)(struct csid_device *csid, s32 val); 101 102 /* 103 * hw_version - Read hardware version register from hardware 104 * @csid: CSID device 105 */ 106 u32 (*hw_version)(struct csid_device *csid); 107 108 /* 109 * isr - CSID module interrupt service routine 110 * @irq: Interrupt line 111 * @dev: CSID device 112 * 113 * Return IRQ_HANDLED on success 114 */ 115 irqreturn_t (*isr)(int irq, void *dev); 116 117 /* 118 * reset - Trigger reset on CSID module and wait to complete 119 * @csid: CSID device 120 * 121 * Return 0 on success or a negative error code otherwise 122 */ 123 int (*reset)(struct csid_device *csid); 124 125 /* 126 * src_pad_code - Pick an output/src format based on the input/sink format 127 * @csid: CSID device 128 * @sink_code: The sink format of the input 129 * @match_format_idx: Request preferred index, as defined by subdevice csid_format. 130 * Set @match_code to 0 if used. 131 * @match_code: Request preferred code, set @match_format_idx to 0 if used 132 * 133 * Return 0 on failure or src format code otherwise 134 */ 135 u32 (*src_pad_code)(struct csid_device *csid, u32 sink_code, 136 unsigned int match_format_idx, u32 match_code); 137 138 /* 139 * subdev_init - Initialize CSID device according for hardware revision 140 * @csid: CSID device 141 */ 142 void (*subdev_init)(struct csid_device *csid); 143 }; 144 145 struct csid_device { 146 struct camss *camss; 147 u8 id; 148 struct v4l2_subdev subdev; 149 struct media_pad pads[MSM_CSID_PADS_NUM]; 150 void __iomem *base; 151 u32 irq; 152 char irq_name[30]; 153 struct camss_clock *clock; 154 int nclocks; 155 struct regulator_bulk_data *supplies; 156 int num_supplies; 157 struct completion reset_complete; 158 struct csid_testgen_config testgen; 159 struct csid_phy_config phy; 160 struct v4l2_mbus_framefmt fmt[MSM_CSID_PADS_NUM]; 161 struct v4l2_ctrl_handler ctrls; 162 struct v4l2_ctrl *testgen_mode; 163 const struct csid_format *formats; 164 unsigned int nformats; 165 const struct csid_hw_ops *ops; 166 }; 167 168 struct resources; 169 170 /* 171 * csid_find_code - Find a format code in an array using array index or format code 172 * @codes: Array of format codes 173 * @ncodes: Length of @code array 174 * @req_format_idx: Request preferred index, as defined by subdevice csid_format. 175 * Set @match_code to 0 if used. 176 * @match_code: Request preferred code, set @req_format_idx to 0 if used 177 * 178 * Return 0 on failure or format code otherwise 179 */ 180 u32 csid_find_code(u32 *codes, unsigned int ncode, 181 unsigned int match_format_idx, u32 match_code); 182 183 /* 184 * csid_get_fmt_entry - Find csid_format entry with matching format code 185 * @formats: Array of format csid_format entries 186 * @nformats: Length of @nformats array 187 * @code: Desired format code 188 * 189 * Return formats[0] on failure to find code 190 */ 191 const struct csid_format *csid_get_fmt_entry(const struct csid_format *formats, 192 unsigned int nformats, 193 u32 code); 194 195 int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid, 196 const struct resources *res, u8 id); 197 198 int msm_csid_register_entity(struct csid_device *csid, 199 struct v4l2_device *v4l2_dev); 200 201 void msm_csid_unregister_entity(struct csid_device *csid); 202 203 void msm_csid_get_csid_id(struct media_entity *entity, u8 *id); 204 205 extern const char * const csid_testgen_modes[]; 206 207 extern const struct csid_hw_ops csid_ops_4_1; 208 extern const struct csid_hw_ops csid_ops_4_7; 209 extern const struct csid_hw_ops csid_ops_gen2; 210 211 212 #endif /* QC_MSM_CAMSS_CSID_H */ 213