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_FIRST_SRC 1 23 #define MSM_CSID_PADS_NUM 5 24 25 #define MSM_CSID_PAD_SRC (MSM_CSID_PAD_FIRST_SRC) 26 27 /* CSID hardware can demultiplex up to 4 outputs */ 28 #define MSM_CSID_MAX_SRC_STREAMS 4 29 30 #define DATA_TYPE_EMBEDDED_DATA_8BIT 0x12 31 #define DATA_TYPE_YUV420_8BIT 0x18 32 #define DATA_TYPE_YUV420_10BIT 0x19 33 #define DATA_TYPE_YUV420_8BIT_LEGACY 0x1a 34 #define DATA_TYPE_YUV420_8BIT_SHIFTED 0x1c /* Chroma Shifted Pixel Sampling */ 35 #define DATA_TYPE_YUV420_10BIT_SHIFTED 0x1d /* Chroma Shifted Pixel Sampling */ 36 #define DATA_TYPE_YUV422_8BIT 0x1e 37 #define DATA_TYPE_YUV422_10BIT 0x1f 38 #define DATA_TYPE_RGB444 0x20 39 #define DATA_TYPE_RGB555 0x21 40 #define DATA_TYPE_RGB565 0x22 41 #define DATA_TYPE_RGB666 0x23 42 #define DATA_TYPE_RGB888 0x24 43 #define DATA_TYPE_RAW_24BIT 0x27 44 #define DATA_TYPE_RAW_6BIT 0x28 45 #define DATA_TYPE_RAW_7BIT 0x29 46 #define DATA_TYPE_RAW_8BIT 0x2a 47 #define DATA_TYPE_RAW_10BIT 0x2b 48 #define DATA_TYPE_RAW_12BIT 0x2c 49 #define DATA_TYPE_RAW_14BIT 0x2d 50 #define DATA_TYPE_RAW_16BIT 0x2e 51 #define DATA_TYPE_RAW_20BIT 0x2f 52 53 #define CSID_RESET_TIMEOUT_MS 500 54 55 enum csid_testgen_mode { 56 CSID_PAYLOAD_MODE_DISABLED = 0, 57 CSID_PAYLOAD_MODE_INCREMENTING = 1, 58 CSID_PAYLOAD_MODE_ALTERNATING_55_AA = 2, 59 CSID_PAYLOAD_MODE_ALL_ZEROES = 3, 60 CSID_PAYLOAD_MODE_ALL_ONES = 4, 61 CSID_PAYLOAD_MODE_RANDOM = 5, 62 CSID_PAYLOAD_MODE_USER_SPECIFIED = 6, 63 CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1 = 6, /* excluding disabled */ 64 CSID_PAYLOAD_MODE_COMPLEX_PATTERN = 7, 65 CSID_PAYLOAD_MODE_COLOR_BOX = 8, 66 CSID_PAYLOAD_MODE_COLOR_BARS = 9, 67 CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2 = 9, /* excluding disabled */ 68 }; 69 70 struct csid_format { 71 u32 code; 72 u8 data_type; 73 u8 decode_format; 74 u8 bpp; 75 u8 spp; /* bus samples per pixel */ 76 }; 77 78 struct csid_testgen_config { 79 enum csid_testgen_mode mode; 80 const char * const*modes; 81 u8 nmodes; 82 u8 enabled; 83 }; 84 85 struct csid_phy_config { 86 u8 csiphy_id; 87 u8 lane_cnt; 88 u32 lane_assign; 89 u32 en_vc; 90 u8 need_vc_update; 91 }; 92 93 struct csid_device; 94 95 struct csid_hw_ops { 96 /* 97 * configure_stream - Configures and starts CSID input stream 98 * @csid: CSID device 99 */ 100 void (*configure_stream)(struct csid_device *csid, u8 enable); 101 102 /* 103 * configure_testgen_pattern - Validates and configures output pattern mode 104 * of test pattern generator 105 * @csid: CSID device 106 */ 107 int (*configure_testgen_pattern)(struct csid_device *csid, s32 val); 108 109 /* 110 * hw_version - Read hardware version register from hardware 111 * @csid: CSID device 112 */ 113 u32 (*hw_version)(struct csid_device *csid); 114 115 /* 116 * isr - CSID module interrupt service routine 117 * @irq: Interrupt line 118 * @dev: CSID device 119 * 120 * Return IRQ_HANDLED on success 121 */ 122 irqreturn_t (*isr)(int irq, void *dev); 123 124 /* 125 * reset - Trigger reset on CSID module and wait to complete 126 * @csid: CSID device 127 * 128 * Return 0 on success or a negative error code otherwise 129 */ 130 int (*reset)(struct csid_device *csid); 131 132 /* 133 * src_pad_code - Pick an output/src format based on the input/sink format 134 * @csid: CSID device 135 * @sink_code: The sink format of the input 136 * @match_format_idx: Request preferred index, as defined by subdevice csid_format. 137 * Set @match_code to 0 if used. 138 * @match_code: Request preferred code, set @match_format_idx to 0 if used 139 * 140 * Return 0 on failure or src format code otherwise 141 */ 142 u32 (*src_pad_code)(struct csid_device *csid, u32 sink_code, 143 unsigned int match_format_idx, u32 match_code); 144 145 /* 146 * subdev_init - Initialize CSID device according for hardware revision 147 * @csid: CSID device 148 */ 149 void (*subdev_init)(struct csid_device *csid); 150 }; 151 152 struct csid_device { 153 struct camss *camss; 154 u8 id; 155 struct v4l2_subdev subdev; 156 struct media_pad pads[MSM_CSID_PADS_NUM]; 157 void __iomem *base; 158 u32 irq; 159 char irq_name[30]; 160 struct camss_clock *clock; 161 int nclocks; 162 struct regulator_bulk_data *supplies; 163 int num_supplies; 164 struct completion reset_complete; 165 struct csid_testgen_config testgen; 166 struct csid_phy_config phy; 167 struct v4l2_mbus_framefmt fmt[MSM_CSID_PADS_NUM]; 168 struct v4l2_ctrl_handler ctrls; 169 struct v4l2_ctrl *testgen_mode; 170 const struct csid_format *formats; 171 unsigned int nformats; 172 const struct csid_hw_ops *ops; 173 }; 174 175 struct resources; 176 177 /* 178 * csid_find_code - Find a format code in an array using array index or format code 179 * @codes: Array of format codes 180 * @ncodes: Length of @code array 181 * @req_format_idx: Request preferred index, as defined by subdevice csid_format. 182 * Set @match_code to 0 if used. 183 * @match_code: Request preferred code, set @req_format_idx to 0 if used 184 * 185 * Return 0 on failure or format code otherwise 186 */ 187 u32 csid_find_code(u32 *codes, unsigned int ncode, 188 unsigned int match_format_idx, u32 match_code); 189 190 /* 191 * csid_get_fmt_entry - Find csid_format entry with matching format code 192 * @formats: Array of format csid_format entries 193 * @nformats: Length of @nformats array 194 * @code: Desired format code 195 * 196 * Return formats[0] on failure to find code 197 */ 198 const struct csid_format *csid_get_fmt_entry(const struct csid_format *formats, 199 unsigned int nformats, 200 u32 code); 201 202 int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid, 203 const struct resources *res, u8 id); 204 205 int msm_csid_register_entity(struct csid_device *csid, 206 struct v4l2_device *v4l2_dev); 207 208 void msm_csid_unregister_entity(struct csid_device *csid); 209 210 void msm_csid_get_csid_id(struct media_entity *entity, u8 *id); 211 212 extern const char * const csid_testgen_modes[]; 213 214 extern const struct csid_hw_ops csid_ops_4_1; 215 extern const struct csid_hw_ops csid_ops_4_7; 216 extern const struct csid_hw_ops csid_ops_gen2; 217 218 219 #endif /* QC_MSM_CAMSS_CSID_H */ 220