1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * camss-csid-4-1.c 4 * 5 * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module 6 * 7 * Copyright (C) 2020 Linaro Ltd. 8 */ 9 10 #include <linux/completion.h> 11 #include <linux/interrupt.h> 12 #include <linux/io.h> 13 #include <linux/kernel.h> 14 #include <linux/of.h> 15 16 #include "camss-csid.h" 17 #include "camss-csid-gen1.h" 18 #include "camss.h" 19 20 #define CAMSS_CSID_HW_VERSION 0x0 21 #define CAMSS_CSID_CORE_CTRL_0 0x004 22 #define CAMSS_CSID_CORE_CTRL_1 0x008 23 #define CAMSS_CSID_RST_CMD 0x00c 24 #define CAMSS_CSID_CID_LUT_VC_n(n) (0x010 + 0x4 * (n)) 25 #define CAMSS_CSID_CID_n_CFG(n) (0x020 + 0x4 * (n)) 26 #define CAMSS_CSID_CID_n_CFG_ISPIF_EN BIT(0) 27 #define CAMSS_CSID_CID_n_CFG_RDI_EN BIT(1) 28 #define CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT 4 29 #define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_8 (PLAIN_FORMAT_PLAIN8 << 8) 30 #define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16 (PLAIN_FORMAT_PLAIN16 << 8) 31 #define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB (0 << 9) 32 #define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_MSB (1 << 9) 33 #define CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP (0 << 10) 34 #define CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING (1 << 10) 35 #define CAMSS_CSID_IRQ_CLEAR_CMD 0x060 36 #define CAMSS_CSID_IRQ_MASK 0x064 37 #define CAMSS_CSID_IRQ_STATUS 0x068 38 #define CAMSS_CSID_TG_CTRL 0x0a0 39 #define CAMSS_CSID_TG_CTRL_DISABLE 0xa06436 40 #define CAMSS_CSID_TG_CTRL_ENABLE 0xa06437 41 #define CAMSS_CSID_TG_VC_CFG 0x0a4 42 #define CAMSS_CSID_TG_VC_CFG_H_BLANKING 0x3ff 43 #define CAMSS_CSID_TG_VC_CFG_V_BLANKING 0x7f 44 #define CAMSS_CSID_TG_DT_n_CGG_0(n) (0x0ac + 0xc * (n)) 45 #define CAMSS_CSID_TG_DT_n_CGG_1(n) (0x0b0 + 0xc * (n)) 46 #define CAMSS_CSID_TG_DT_n_CGG_2(n) (0x0b4 + 0xc * (n)) 47 48 static const struct csid_format csid_formats[] = { 49 { 50 MEDIA_BUS_FMT_UYVY8_1X16, 51 DATA_TYPE_YUV422_8BIT, 52 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 53 8, 54 2, 55 }, 56 { 57 MEDIA_BUS_FMT_VYUY8_1X16, 58 DATA_TYPE_YUV422_8BIT, 59 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 60 8, 61 2, 62 }, 63 { 64 MEDIA_BUS_FMT_YUYV8_1X16, 65 DATA_TYPE_YUV422_8BIT, 66 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 67 8, 68 2, 69 }, 70 { 71 MEDIA_BUS_FMT_YVYU8_1X16, 72 DATA_TYPE_YUV422_8BIT, 73 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 74 8, 75 2, 76 }, 77 { 78 MEDIA_BUS_FMT_SBGGR8_1X8, 79 DATA_TYPE_RAW_8BIT, 80 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 81 8, 82 1, 83 }, 84 { 85 MEDIA_BUS_FMT_SGBRG8_1X8, 86 DATA_TYPE_RAW_8BIT, 87 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 88 8, 89 1, 90 }, 91 { 92 MEDIA_BUS_FMT_SGRBG8_1X8, 93 DATA_TYPE_RAW_8BIT, 94 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 95 8, 96 1, 97 }, 98 { 99 MEDIA_BUS_FMT_SRGGB8_1X8, 100 DATA_TYPE_RAW_8BIT, 101 DECODE_FORMAT_UNCOMPRESSED_8_BIT, 102 8, 103 1, 104 }, 105 { 106 MEDIA_BUS_FMT_SBGGR10_1X10, 107 DATA_TYPE_RAW_10BIT, 108 DECODE_FORMAT_UNCOMPRESSED_10_BIT, 109 10, 110 1, 111 }, 112 { 113 MEDIA_BUS_FMT_SGBRG10_1X10, 114 DATA_TYPE_RAW_10BIT, 115 DECODE_FORMAT_UNCOMPRESSED_10_BIT, 116 10, 117 1, 118 }, 119 { 120 MEDIA_BUS_FMT_SGRBG10_1X10, 121 DATA_TYPE_RAW_10BIT, 122 DECODE_FORMAT_UNCOMPRESSED_10_BIT, 123 10, 124 1, 125 }, 126 { 127 MEDIA_BUS_FMT_SRGGB10_1X10, 128 DATA_TYPE_RAW_10BIT, 129 DECODE_FORMAT_UNCOMPRESSED_10_BIT, 130 10, 131 1, 132 }, 133 { 134 MEDIA_BUS_FMT_SBGGR12_1X12, 135 DATA_TYPE_RAW_12BIT, 136 DECODE_FORMAT_UNCOMPRESSED_12_BIT, 137 12, 138 1, 139 }, 140 { 141 MEDIA_BUS_FMT_SGBRG12_1X12, 142 DATA_TYPE_RAW_12BIT, 143 DECODE_FORMAT_UNCOMPRESSED_12_BIT, 144 12, 145 1, 146 }, 147 { 148 MEDIA_BUS_FMT_SGRBG12_1X12, 149 DATA_TYPE_RAW_12BIT, 150 DECODE_FORMAT_UNCOMPRESSED_12_BIT, 151 12, 152 1, 153 }, 154 { 155 MEDIA_BUS_FMT_SRGGB12_1X12, 156 DATA_TYPE_RAW_12BIT, 157 DECODE_FORMAT_UNCOMPRESSED_12_BIT, 158 12, 159 1, 160 }, 161 { 162 MEDIA_BUS_FMT_Y10_1X10, 163 DATA_TYPE_RAW_10BIT, 164 DECODE_FORMAT_UNCOMPRESSED_10_BIT, 165 10, 166 1, 167 }, 168 }; 169 170 static void csid_configure_stream(struct csid_device *csid, u8 enable) 171 { 172 struct csid_testgen_config *tg = &csid->testgen; 173 u32 val; 174 175 if (enable) { 176 struct v4l2_mbus_framefmt *input_format; 177 const struct csid_format *format; 178 u8 vc = 0; /* Virtual Channel 0 */ 179 u8 cid = vc * 4; /* id of Virtual Channel and Data Type set */ 180 u8 dt_shift; 181 182 if (tg->enabled) { 183 /* Config Test Generator */ 184 u32 num_lines, num_bytes_per_line; 185 186 input_format = &csid->fmt[MSM_CSID_PAD_SRC]; 187 format = csid_get_fmt_entry(csid->formats, csid->nformats, 188 input_format->code); 189 num_bytes_per_line = input_format->width * format->bpp * format->spp / 8; 190 num_lines = input_format->height; 191 192 /* 31:24 V blank, 23:13 H blank, 3:2 num of active DT */ 193 /* 1:0 VC */ 194 val = ((CAMSS_CSID_TG_VC_CFG_V_BLANKING & 0xff) << 24) | 195 ((CAMSS_CSID_TG_VC_CFG_H_BLANKING & 0x7ff) << 13); 196 writel_relaxed(val, csid->base + CAMSS_CSID_TG_VC_CFG); 197 198 /* 28:16 bytes per lines, 12:0 num of lines */ 199 val = ((num_bytes_per_line & 0x1fff) << 16) | 200 (num_lines & 0x1fff); 201 writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_0(0)); 202 203 /* 5:0 data type */ 204 val = format->data_type; 205 writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_1(0)); 206 207 /* 2:0 output test pattern */ 208 val = tg->mode - 1; 209 writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_2(0)); 210 } else { 211 struct csid_phy_config *phy = &csid->phy; 212 213 input_format = &csid->fmt[MSM_CSID_PAD_SINK]; 214 format = csid_get_fmt_entry(csid->formats, csid->nformats, 215 input_format->code); 216 217 val = phy->lane_cnt - 1; 218 val |= phy->lane_assign << 4; 219 220 writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_0); 221 222 val = phy->csiphy_id << 17; 223 val |= 0x9; 224 225 writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_1); 226 } 227 228 /* Config LUT */ 229 230 dt_shift = (cid % 4) * 8; 231 val = readl_relaxed(csid->base + CAMSS_CSID_CID_LUT_VC_n(vc)); 232 val &= ~(0xff << dt_shift); 233 val |= format->data_type << dt_shift; 234 writel_relaxed(val, csid->base + CAMSS_CSID_CID_LUT_VC_n(vc)); 235 236 val = CAMSS_CSID_CID_n_CFG_ISPIF_EN; 237 val |= CAMSS_CSID_CID_n_CFG_RDI_EN; 238 val |= format->decode_format << CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT; 239 val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP; 240 writel_relaxed(val, csid->base + CAMSS_CSID_CID_n_CFG(cid)); 241 242 if (tg->enabled) { 243 val = CAMSS_CSID_TG_CTRL_ENABLE; 244 writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL); 245 } 246 } else { 247 if (tg->enabled) { 248 val = CAMSS_CSID_TG_CTRL_DISABLE; 249 writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL); 250 } 251 } 252 } 253 254 static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val) 255 { 256 if (val > 0 && val <= csid->testgen.nmodes) 257 csid->testgen.mode = val; 258 259 return 0; 260 } 261 262 static u32 csid_hw_version(struct csid_device *csid) 263 { 264 u32 hw_version = readl_relaxed(csid->base + CAMSS_CSID_HW_VERSION); 265 266 dev_dbg(csid->camss->dev, "CSID HW Version = 0x%08x\n", hw_version); 267 268 return hw_version; 269 } 270 271 static irqreturn_t csid_isr(int irq, void *dev) 272 { 273 struct csid_device *csid = dev; 274 u32 value; 275 276 value = readl_relaxed(csid->base + CAMSS_CSID_IRQ_STATUS); 277 writel_relaxed(value, csid->base + CAMSS_CSID_IRQ_CLEAR_CMD); 278 279 if ((value >> 11) & 0x1) 280 complete(&csid->reset_complete); 281 282 return IRQ_HANDLED; 283 } 284 285 static int csid_reset(struct csid_device *csid) 286 { 287 unsigned long time; 288 289 reinit_completion(&csid->reset_complete); 290 291 writel_relaxed(0x7fff, csid->base + CAMSS_CSID_RST_CMD); 292 293 time = wait_for_completion_timeout(&csid->reset_complete, 294 msecs_to_jiffies(CSID_RESET_TIMEOUT_MS)); 295 if (!time) { 296 dev_err(csid->camss->dev, "CSID reset timeout\n"); 297 return -EIO; 298 } 299 300 return 0; 301 } 302 303 static u32 csid_src_pad_code(struct csid_device *csid, u32 sink_code, 304 unsigned int match_format_idx, u32 match_code) 305 { 306 if (match_format_idx > 0) 307 return 0; 308 309 return sink_code; 310 } 311 312 static void csid_subdev_init(struct csid_device *csid) 313 { 314 csid->formats = csid_formats; 315 csid->nformats = ARRAY_SIZE(csid_formats); 316 csid->testgen.modes = csid_testgen_modes; 317 csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN1; 318 } 319 320 const struct csid_hw_ops csid_ops_4_1 = { 321 .configure_stream = csid_configure_stream, 322 .configure_testgen_pattern = csid_configure_testgen_pattern, 323 .hw_version = csid_hw_version, 324 .isr = csid_isr, 325 .reset = csid_reset, 326 .src_pad_code = csid_src_pad_code, 327 .subdev_init = csid_subdev_init, 328 }; 329