| 1 | /* |
| 2 | * SoC-camera host driver for Renesas R-Car VIN unit |
| 3 | * |
| 4 | * Copyright (C) 2011-2013 Renesas Solutions Corp. |
| 5 | * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com> |
| 6 | * |
| 7 | * Based on V4L2 Driver for SuperH Mobile CEU interface "sh_mobile_ceu_camera.c" |
| 8 | * |
| 9 | * Copyright (C) 2008 Magnus Damm |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License as published by the |
| 13 | * Free Software Foundation; either version 2 of the License, or (at your |
| 14 | * option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/io.h> |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/of.h> |
| 23 | #include <linux/of_device.h> |
| 24 | #include <linux/platform_data/camera-rcar.h> |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/pm_runtime.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/videodev2.h> |
| 29 | |
| 30 | #include <media/soc_camera.h> |
| 31 | #include <media/soc_mediabus.h> |
| 32 | #include <media/v4l2-common.h> |
| 33 | #include <media/v4l2-dev.h> |
| 34 | #include <media/v4l2-device.h> |
| 35 | #include <media/v4l2-mediabus.h> |
| 36 | #include <media/v4l2-of.h> |
| 37 | #include <media/v4l2-subdev.h> |
| 38 | #include <media/videobuf2-dma-contig.h> |
| 39 | |
| 40 | #include "soc_scale_crop.h" |
| 41 | |
| 42 | #define DRV_NAME "rcar_vin" |
| 43 | |
| 44 | /* Register offsets for R-Car VIN */ |
| 45 | #define VNMC_REG 0x00 /* Video n Main Control Register */ |
| 46 | #define VNMS_REG 0x04 /* Video n Module Status Register */ |
| 47 | #define VNFC_REG 0x08 /* Video n Frame Capture Register */ |
| 48 | #define VNSLPRC_REG 0x0C /* Video n Start Line Pre-Clip Register */ |
| 49 | #define VNELPRC_REG 0x10 /* Video n End Line Pre-Clip Register */ |
| 50 | #define VNSPPRC_REG 0x14 /* Video n Start Pixel Pre-Clip Register */ |
| 51 | #define VNEPPRC_REG 0x18 /* Video n End Pixel Pre-Clip Register */ |
| 52 | #define VNSLPOC_REG 0x1C /* Video n Start Line Post-Clip Register */ |
| 53 | #define VNELPOC_REG 0x20 /* Video n End Line Post-Clip Register */ |
| 54 | #define VNSPPOC_REG 0x24 /* Video n Start Pixel Post-Clip Register */ |
| 55 | #define VNEPPOC_REG 0x28 /* Video n End Pixel Post-Clip Register */ |
| 56 | #define VNIS_REG 0x2C /* Video n Image Stride Register */ |
| 57 | #define VNMB_REG(m) (0x30 + ((m) << 2)) /* Video n Memory Base m Register */ |
| 58 | #define VNIE_REG 0x40 /* Video n Interrupt Enable Register */ |
| 59 | #define VNINTS_REG 0x44 /* Video n Interrupt Status Register */ |
| 60 | #define VNSI_REG 0x48 /* Video n Scanline Interrupt Register */ |
| 61 | #define VNMTC_REG 0x4C /* Video n Memory Transfer Control Register */ |
| 62 | #define VNYS_REG 0x50 /* Video n Y Scale Register */ |
| 63 | #define VNXS_REG 0x54 /* Video n X Scale Register */ |
| 64 | #define VNDMR_REG 0x58 /* Video n Data Mode Register */ |
| 65 | #define VNDMR2_REG 0x5C /* Video n Data Mode Register 2 */ |
| 66 | #define VNUVAOF_REG 0x60 /* Video n UV Address Offset Register */ |
| 67 | |
| 68 | /* Register bit fields for R-Car VIN */ |
| 69 | /* Video n Main Control Register bits */ |
| 70 | #define VNMC_FOC (1 << 21) |
| 71 | #define VNMC_YCAL (1 << 19) |
| 72 | #define VNMC_INF_YUV8_BT656 (0 << 16) |
| 73 | #define VNMC_INF_YUV8_BT601 (1 << 16) |
| 74 | #define VNMC_INF_YUV10_BT656 (2 << 16) |
| 75 | #define VNMC_INF_YUV10_BT601 (3 << 16) |
| 76 | #define VNMC_INF_YUV16 (5 << 16) |
| 77 | #define VNMC_VUP (1 << 10) |
| 78 | #define VNMC_IM_ODD (0 << 3) |
| 79 | #define VNMC_IM_ODD_EVEN (1 << 3) |
| 80 | #define VNMC_IM_EVEN (2 << 3) |
| 81 | #define VNMC_IM_FULL (3 << 3) |
| 82 | #define VNMC_BPS (1 << 1) |
| 83 | #define VNMC_ME (1 << 0) |
| 84 | |
| 85 | /* Video n Module Status Register bits */ |
| 86 | #define VNMS_FBS_MASK (3 << 3) |
| 87 | #define VNMS_FBS_SHIFT 3 |
| 88 | #define VNMS_AV (1 << 1) |
| 89 | #define VNMS_CA (1 << 0) |
| 90 | |
| 91 | /* Video n Frame Capture Register bits */ |
| 92 | #define VNFC_C_FRAME (1 << 1) |
| 93 | #define VNFC_S_FRAME (1 << 0) |
| 94 | |
| 95 | /* Video n Interrupt Enable Register bits */ |
| 96 | #define VNIE_FIE (1 << 4) |
| 97 | #define VNIE_EFE (1 << 1) |
| 98 | |
| 99 | /* Video n Data Mode Register bits */ |
| 100 | #define VNDMR_EXRGB (1 << 8) |
| 101 | #define VNDMR_BPSM (1 << 4) |
| 102 | #define VNDMR_DTMD_YCSEP (1 << 1) |
| 103 | #define VNDMR_DTMD_ARGB1555 (1 << 0) |
| 104 | |
| 105 | /* Video n Data Mode Register 2 bits */ |
| 106 | #define VNDMR2_VPS (1 << 30) |
| 107 | #define VNDMR2_HPS (1 << 29) |
| 108 | #define VNDMR2_FTEV (1 << 17) |
| 109 | |
| 110 | #define VIN_MAX_WIDTH 2048 |
| 111 | #define VIN_MAX_HEIGHT 2048 |
| 112 | |
| 113 | enum chip_id { |
| 114 | RCAR_GEN2, |
| 115 | RCAR_H1, |
| 116 | RCAR_M1, |
| 117 | RCAR_E1, |
| 118 | }; |
| 119 | |
| 120 | enum rcar_vin_state { |
| 121 | STOPPED = 0, |
| 122 | RUNNING, |
| 123 | STOPPING, |
| 124 | }; |
| 125 | |
| 126 | struct rcar_vin_priv { |
| 127 | void __iomem *base; |
| 128 | spinlock_t lock; |
| 129 | int sequence; |
| 130 | /* State of the VIN module in capturing mode */ |
| 131 | enum rcar_vin_state state; |
| 132 | struct soc_camera_host ici; |
| 133 | struct list_head capture; |
| 134 | #define MAX_BUFFER_NUM 3 |
| 135 | struct vb2_buffer *queue_buf[MAX_BUFFER_NUM]; |
| 136 | struct vb2_alloc_ctx *alloc_ctx; |
| 137 | enum v4l2_field field; |
| 138 | unsigned int pdata_flags; |
| 139 | unsigned int vb_count; |
| 140 | unsigned int nr_hw_slots; |
| 141 | bool request_to_stop; |
| 142 | struct completion capture_stop; |
| 143 | enum chip_id chip; |
| 144 | }; |
| 145 | |
| 146 | #define is_continuous_transfer(priv) (priv->vb_count > MAX_BUFFER_NUM) |
| 147 | |
| 148 | struct rcar_vin_buffer { |
| 149 | struct vb2_buffer vb; |
| 150 | struct list_head list; |
| 151 | }; |
| 152 | |
| 153 | #define to_buf_list(vb2_buffer) (&container_of(vb2_buffer, \ |
| 154 | struct rcar_vin_buffer, \ |
| 155 | vb)->list) |
| 156 | |
| 157 | struct rcar_vin_cam { |
| 158 | /* VIN offsets within the camera output, before the VIN scaler */ |
| 159 | unsigned int vin_left; |
| 160 | unsigned int vin_top; |
| 161 | /* Client output, as seen by the VIN */ |
| 162 | unsigned int width; |
| 163 | unsigned int height; |
| 164 | /* |
| 165 | * User window from S_CROP / G_CROP, produced by client cropping and |
| 166 | * scaling, VIN scaling and VIN cropping, mapped back onto the client |
| 167 | * input window |
| 168 | */ |
| 169 | struct v4l2_rect subrect; |
| 170 | /* Camera cropping rectangle */ |
| 171 | struct v4l2_rect rect; |
| 172 | const struct soc_mbus_pixelfmt *extra_fmt; |
| 173 | }; |
| 174 | |
| 175 | /* |
| 176 | * .queue_setup() is called to check whether the driver can accept the requested |
| 177 | * number of buffers and to fill in plane sizes for the current frame format if |
| 178 | * required |
| 179 | */ |
| 180 | static int rcar_vin_videobuf_setup(struct vb2_queue *vq, |
| 181 | const struct v4l2_format *fmt, |
| 182 | unsigned int *count, |
| 183 | unsigned int *num_planes, |
| 184 | unsigned int sizes[], void *alloc_ctxs[]) |
| 185 | { |
| 186 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
| 187 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 188 | struct rcar_vin_priv *priv = ici->priv; |
| 189 | |
| 190 | if (fmt) { |
| 191 | const struct soc_camera_format_xlate *xlate; |
| 192 | unsigned int bytes_per_line; |
| 193 | int ret; |
| 194 | |
| 195 | xlate = soc_camera_xlate_by_fourcc(icd, |
| 196 | fmt->fmt.pix.pixelformat); |
| 197 | if (!xlate) |
| 198 | return -EINVAL; |
| 199 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
| 200 | xlate->host_fmt); |
| 201 | if (ret < 0) |
| 202 | return ret; |
| 203 | |
| 204 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
| 205 | |
| 206 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, |
| 207 | fmt->fmt.pix.height); |
| 208 | if (ret < 0) |
| 209 | return ret; |
| 210 | |
| 211 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); |
| 212 | } else { |
| 213 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ |
| 214 | sizes[0] = icd->sizeimage; |
| 215 | } |
| 216 | |
| 217 | alloc_ctxs[0] = priv->alloc_ctx; |
| 218 | |
| 219 | if (!vq->num_buffers) |
| 220 | priv->sequence = 0; |
| 221 | |
| 222 | if (!*count) |
| 223 | *count = 2; |
| 224 | priv->vb_count = *count; |
| 225 | |
| 226 | *num_planes = 1; |
| 227 | |
| 228 | /* Number of hardware slots */ |
| 229 | if (is_continuous_transfer(priv)) |
| 230 | priv->nr_hw_slots = MAX_BUFFER_NUM; |
| 231 | else |
| 232 | priv->nr_hw_slots = 1; |
| 233 | |
| 234 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
| 235 | |
| 236 | return 0; |
| 237 | } |
| 238 | |
| 239 | static int rcar_vin_setup(struct rcar_vin_priv *priv) |
| 240 | { |
| 241 | struct soc_camera_device *icd = priv->ici.icd; |
| 242 | struct rcar_vin_cam *cam = icd->host_priv; |
| 243 | u32 vnmc, dmr, interrupts; |
| 244 | bool progressive = false, output_is_yuv = false; |
| 245 | |
| 246 | switch (priv->field) { |
| 247 | case V4L2_FIELD_TOP: |
| 248 | vnmc = VNMC_IM_ODD; |
| 249 | break; |
| 250 | case V4L2_FIELD_BOTTOM: |
| 251 | vnmc = VNMC_IM_EVEN; |
| 252 | break; |
| 253 | case V4L2_FIELD_INTERLACED: |
| 254 | case V4L2_FIELD_INTERLACED_TB: |
| 255 | vnmc = VNMC_IM_FULL; |
| 256 | break; |
| 257 | case V4L2_FIELD_INTERLACED_BT: |
| 258 | vnmc = VNMC_IM_FULL | VNMC_FOC; |
| 259 | break; |
| 260 | case V4L2_FIELD_NONE: |
| 261 | if (is_continuous_transfer(priv)) { |
| 262 | vnmc = VNMC_IM_ODD_EVEN; |
| 263 | progressive = true; |
| 264 | } else { |
| 265 | vnmc = VNMC_IM_ODD; |
| 266 | } |
| 267 | break; |
| 268 | default: |
| 269 | vnmc = VNMC_IM_ODD; |
| 270 | break; |
| 271 | } |
| 272 | |
| 273 | /* input interface */ |
| 274 | switch (icd->current_fmt->code) { |
| 275 | case V4L2_MBUS_FMT_YUYV8_1X16: |
| 276 | /* BT.601/BT.1358 16bit YCbCr422 */ |
| 277 | vnmc |= VNMC_INF_YUV16; |
| 278 | break; |
| 279 | case V4L2_MBUS_FMT_YUYV8_2X8: |
| 280 | /* BT.656 8bit YCbCr422 or BT.601 8bit YCbCr422 */ |
| 281 | vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ? |
| 282 | VNMC_INF_YUV8_BT656 : VNMC_INF_YUV8_BT601; |
| 283 | break; |
| 284 | case V4L2_MBUS_FMT_YUYV10_2X10: |
| 285 | /* BT.656 10bit YCbCr422 or BT.601 10bit YCbCr422 */ |
| 286 | vnmc |= priv->pdata_flags & RCAR_VIN_BT656 ? |
| 287 | VNMC_INF_YUV10_BT656 : VNMC_INF_YUV10_BT601; |
| 288 | break; |
| 289 | default: |
| 290 | break; |
| 291 | } |
| 292 | |
| 293 | /* output format */ |
| 294 | switch (icd->current_fmt->host_fmt->fourcc) { |
| 295 | case V4L2_PIX_FMT_NV16: |
| 296 | iowrite32(ALIGN(cam->width * cam->height, 0x80), |
| 297 | priv->base + VNUVAOF_REG); |
| 298 | dmr = VNDMR_DTMD_YCSEP; |
| 299 | output_is_yuv = true; |
| 300 | break; |
| 301 | case V4L2_PIX_FMT_YUYV: |
| 302 | dmr = VNDMR_BPSM; |
| 303 | output_is_yuv = true; |
| 304 | break; |
| 305 | case V4L2_PIX_FMT_UYVY: |
| 306 | dmr = 0; |
| 307 | output_is_yuv = true; |
| 308 | break; |
| 309 | case V4L2_PIX_FMT_RGB555X: |
| 310 | dmr = VNDMR_DTMD_ARGB1555; |
| 311 | break; |
| 312 | case V4L2_PIX_FMT_RGB565: |
| 313 | dmr = 0; |
| 314 | break; |
| 315 | case V4L2_PIX_FMT_RGB32: |
| 316 | if (priv->chip == RCAR_GEN2 || priv->chip == RCAR_H1 || |
| 317 | priv->chip == RCAR_E1) { |
| 318 | dmr = VNDMR_EXRGB; |
| 319 | break; |
| 320 | } |
| 321 | default: |
| 322 | dev_warn(icd->parent, "Invalid fourcc format (0x%x)\n", |
| 323 | icd->current_fmt->host_fmt->fourcc); |
| 324 | return -EINVAL; |
| 325 | } |
| 326 | |
| 327 | /* Always update on field change */ |
| 328 | vnmc |= VNMC_VUP; |
| 329 | |
| 330 | /* If input and output use the same colorspace, use bypass mode */ |
| 331 | if (output_is_yuv) |
| 332 | vnmc |= VNMC_BPS; |
| 333 | |
| 334 | /* progressive or interlaced mode */ |
| 335 | interrupts = progressive ? VNIE_FIE | VNIE_EFE : VNIE_EFE; |
| 336 | |
| 337 | /* ack interrupts */ |
| 338 | iowrite32(interrupts, priv->base + VNINTS_REG); |
| 339 | /* enable interrupts */ |
| 340 | iowrite32(interrupts, priv->base + VNIE_REG); |
| 341 | /* start capturing */ |
| 342 | iowrite32(dmr, priv->base + VNDMR_REG); |
| 343 | iowrite32(vnmc | VNMC_ME, priv->base + VNMC_REG); |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | static void rcar_vin_capture(struct rcar_vin_priv *priv) |
| 349 | { |
| 350 | if (is_continuous_transfer(priv)) |
| 351 | /* Continuous Frame Capture Mode */ |
| 352 | iowrite32(VNFC_C_FRAME, priv->base + VNFC_REG); |
| 353 | else |
| 354 | /* Single Frame Capture Mode */ |
| 355 | iowrite32(VNFC_S_FRAME, priv->base + VNFC_REG); |
| 356 | } |
| 357 | |
| 358 | static void rcar_vin_request_capture_stop(struct rcar_vin_priv *priv) |
| 359 | { |
| 360 | priv->state = STOPPING; |
| 361 | |
| 362 | /* set continuous & single transfer off */ |
| 363 | iowrite32(0, priv->base + VNFC_REG); |
| 364 | /* disable capture (release DMA buffer), reset */ |
| 365 | iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, |
| 366 | priv->base + VNMC_REG); |
| 367 | |
| 368 | /* update the status if stopped already */ |
| 369 | if (!(ioread32(priv->base + VNMS_REG) & VNMS_CA)) |
| 370 | priv->state = STOPPED; |
| 371 | } |
| 372 | |
| 373 | static int rcar_vin_get_free_hw_slot(struct rcar_vin_priv *priv) |
| 374 | { |
| 375 | int slot; |
| 376 | |
| 377 | for (slot = 0; slot < priv->nr_hw_slots; slot++) |
| 378 | if (priv->queue_buf[slot] == NULL) |
| 379 | return slot; |
| 380 | |
| 381 | return -1; |
| 382 | } |
| 383 | |
| 384 | static int rcar_vin_hw_ready(struct rcar_vin_priv *priv) |
| 385 | { |
| 386 | /* Ensure all HW slots are filled */ |
| 387 | return rcar_vin_get_free_hw_slot(priv) < 0 ? 1 : 0; |
| 388 | } |
| 389 | |
| 390 | /* Moves a buffer from the queue to the HW slots */ |
| 391 | static int rcar_vin_fill_hw_slot(struct rcar_vin_priv *priv) |
| 392 | { |
| 393 | struct vb2_buffer *vb; |
| 394 | dma_addr_t phys_addr_top; |
| 395 | int slot; |
| 396 | |
| 397 | if (list_empty(&priv->capture)) |
| 398 | return 0; |
| 399 | |
| 400 | /* Find a free HW slot */ |
| 401 | slot = rcar_vin_get_free_hw_slot(priv); |
| 402 | if (slot < 0) |
| 403 | return 0; |
| 404 | |
| 405 | vb = &list_entry(priv->capture.next, struct rcar_vin_buffer, list)->vb; |
| 406 | list_del_init(to_buf_list(vb)); |
| 407 | priv->queue_buf[slot] = vb; |
| 408 | phys_addr_top = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 409 | iowrite32(phys_addr_top, priv->base + VNMB_REG(slot)); |
| 410 | |
| 411 | return 1; |
| 412 | } |
| 413 | |
| 414 | static void rcar_vin_videobuf_queue(struct vb2_buffer *vb) |
| 415 | { |
| 416 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
| 417 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 418 | struct rcar_vin_priv *priv = ici->priv; |
| 419 | unsigned long size; |
| 420 | |
| 421 | size = icd->sizeimage; |
| 422 | |
| 423 | if (vb2_plane_size(vb, 0) < size) { |
| 424 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", |
| 425 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); |
| 426 | goto error; |
| 427 | } |
| 428 | |
| 429 | vb2_set_plane_payload(vb, 0, size); |
| 430 | |
| 431 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 432 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
| 433 | |
| 434 | spin_lock_irq(&priv->lock); |
| 435 | |
| 436 | list_add_tail(to_buf_list(vb), &priv->capture); |
| 437 | rcar_vin_fill_hw_slot(priv); |
| 438 | |
| 439 | /* If we weren't running, and have enough buffers, start capturing! */ |
| 440 | if (priv->state != RUNNING && rcar_vin_hw_ready(priv)) { |
| 441 | if (rcar_vin_setup(priv)) { |
| 442 | /* Submit error */ |
| 443 | list_del_init(to_buf_list(vb)); |
| 444 | spin_unlock_irq(&priv->lock); |
| 445 | goto error; |
| 446 | } |
| 447 | priv->request_to_stop = false; |
| 448 | init_completion(&priv->capture_stop); |
| 449 | priv->state = RUNNING; |
| 450 | rcar_vin_capture(priv); |
| 451 | } |
| 452 | |
| 453 | spin_unlock_irq(&priv->lock); |
| 454 | |
| 455 | return; |
| 456 | |
| 457 | error: |
| 458 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| 459 | } |
| 460 | |
| 461 | static void rcar_vin_videobuf_release(struct vb2_buffer *vb) |
| 462 | { |
| 463 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
| 464 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 465 | struct rcar_vin_priv *priv = ici->priv; |
| 466 | unsigned int i; |
| 467 | int buf_in_use = 0; |
| 468 | |
| 469 | spin_lock_irq(&priv->lock); |
| 470 | |
| 471 | /* Is the buffer in use by the VIN hardware? */ |
| 472 | for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| 473 | if (priv->queue_buf[i] == vb) { |
| 474 | buf_in_use = 1; |
| 475 | break; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | if (buf_in_use) { |
| 480 | while (priv->state != STOPPED) { |
| 481 | |
| 482 | /* issue stop if running */ |
| 483 | if (priv->state == RUNNING) |
| 484 | rcar_vin_request_capture_stop(priv); |
| 485 | |
| 486 | /* wait until capturing has been stopped */ |
| 487 | if (priv->state == STOPPING) { |
| 488 | priv->request_to_stop = true; |
| 489 | spin_unlock_irq(&priv->lock); |
| 490 | wait_for_completion(&priv->capture_stop); |
| 491 | spin_lock_irq(&priv->lock); |
| 492 | } |
| 493 | } |
| 494 | /* |
| 495 | * Capturing has now stopped. The buffer we have been asked |
| 496 | * to release could be any of the current buffers in use, so |
| 497 | * release all buffers that are in use by HW |
| 498 | */ |
| 499 | for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| 500 | if (priv->queue_buf[i]) { |
| 501 | vb2_buffer_done(priv->queue_buf[i], |
| 502 | VB2_BUF_STATE_ERROR); |
| 503 | priv->queue_buf[i] = NULL; |
| 504 | } |
| 505 | } |
| 506 | } else { |
| 507 | list_del_init(to_buf_list(vb)); |
| 508 | } |
| 509 | |
| 510 | spin_unlock_irq(&priv->lock); |
| 511 | } |
| 512 | |
| 513 | static int rcar_vin_videobuf_init(struct vb2_buffer *vb) |
| 514 | { |
| 515 | INIT_LIST_HEAD(to_buf_list(vb)); |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | static void rcar_vin_stop_streaming(struct vb2_queue *vq) |
| 520 | { |
| 521 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
| 522 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 523 | struct rcar_vin_priv *priv = ici->priv; |
| 524 | struct list_head *buf_head, *tmp; |
| 525 | |
| 526 | spin_lock_irq(&priv->lock); |
| 527 | list_for_each_safe(buf_head, tmp, &priv->capture) |
| 528 | list_del_init(buf_head); |
| 529 | spin_unlock_irq(&priv->lock); |
| 530 | } |
| 531 | |
| 532 | static struct vb2_ops rcar_vin_vb2_ops = { |
| 533 | .queue_setup = rcar_vin_videobuf_setup, |
| 534 | .buf_init = rcar_vin_videobuf_init, |
| 535 | .buf_cleanup = rcar_vin_videobuf_release, |
| 536 | .buf_queue = rcar_vin_videobuf_queue, |
| 537 | .stop_streaming = rcar_vin_stop_streaming, |
| 538 | .wait_prepare = soc_camera_unlock, |
| 539 | .wait_finish = soc_camera_lock, |
| 540 | }; |
| 541 | |
| 542 | static irqreturn_t rcar_vin_irq(int irq, void *data) |
| 543 | { |
| 544 | struct rcar_vin_priv *priv = data; |
| 545 | u32 int_status; |
| 546 | bool can_run = false, hw_stopped; |
| 547 | int slot; |
| 548 | unsigned int handled = 0; |
| 549 | |
| 550 | spin_lock(&priv->lock); |
| 551 | |
| 552 | int_status = ioread32(priv->base + VNINTS_REG); |
| 553 | if (!int_status) |
| 554 | goto done; |
| 555 | /* ack interrupts */ |
| 556 | iowrite32(int_status, priv->base + VNINTS_REG); |
| 557 | handled = 1; |
| 558 | |
| 559 | /* nothing to do if capture status is 'STOPPED' */ |
| 560 | if (priv->state == STOPPED) |
| 561 | goto done; |
| 562 | |
| 563 | hw_stopped = !(ioread32(priv->base + VNMS_REG) & VNMS_CA); |
| 564 | |
| 565 | if (!priv->request_to_stop) { |
| 566 | if (is_continuous_transfer(priv)) |
| 567 | slot = (ioread32(priv->base + VNMS_REG) & |
| 568 | VNMS_FBS_MASK) >> VNMS_FBS_SHIFT; |
| 569 | else |
| 570 | slot = 0; |
| 571 | |
| 572 | priv->queue_buf[slot]->v4l2_buf.field = priv->field; |
| 573 | priv->queue_buf[slot]->v4l2_buf.sequence = priv->sequence++; |
| 574 | do_gettimeofday(&priv->queue_buf[slot]->v4l2_buf.timestamp); |
| 575 | vb2_buffer_done(priv->queue_buf[slot], VB2_BUF_STATE_DONE); |
| 576 | priv->queue_buf[slot] = NULL; |
| 577 | |
| 578 | if (priv->state != STOPPING) |
| 579 | can_run = rcar_vin_fill_hw_slot(priv); |
| 580 | |
| 581 | if (hw_stopped || !can_run) { |
| 582 | priv->state = STOPPED; |
| 583 | } else if (is_continuous_transfer(priv) && |
| 584 | list_empty(&priv->capture) && |
| 585 | priv->state == RUNNING) { |
| 586 | /* |
| 587 | * The continuous capturing requires an explicit stop |
| 588 | * operation when there is no buffer to be set into |
| 589 | * the VnMBm registers. |
| 590 | */ |
| 591 | rcar_vin_request_capture_stop(priv); |
| 592 | } else { |
| 593 | rcar_vin_capture(priv); |
| 594 | } |
| 595 | |
| 596 | } else if (hw_stopped) { |
| 597 | priv->state = STOPPED; |
| 598 | priv->request_to_stop = false; |
| 599 | complete(&priv->capture_stop); |
| 600 | } |
| 601 | |
| 602 | done: |
| 603 | spin_unlock(&priv->lock); |
| 604 | |
| 605 | return IRQ_RETVAL(handled); |
| 606 | } |
| 607 | |
| 608 | static int rcar_vin_add_device(struct soc_camera_device *icd) |
| 609 | { |
| 610 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 611 | struct rcar_vin_priv *priv = ici->priv; |
| 612 | int i; |
| 613 | |
| 614 | for (i = 0; i < MAX_BUFFER_NUM; i++) |
| 615 | priv->queue_buf[i] = NULL; |
| 616 | |
| 617 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
| 618 | |
| 619 | dev_dbg(icd->parent, "R-Car VIN driver attached to camera %d\n", |
| 620 | icd->devnum); |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static void rcar_vin_remove_device(struct soc_camera_device *icd) |
| 626 | { |
| 627 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 628 | struct rcar_vin_priv *priv = ici->priv; |
| 629 | struct vb2_buffer *vb; |
| 630 | int i; |
| 631 | |
| 632 | /* disable capture, disable interrupts */ |
| 633 | iowrite32(ioread32(priv->base + VNMC_REG) & ~VNMC_ME, |
| 634 | priv->base + VNMC_REG); |
| 635 | iowrite32(0, priv->base + VNIE_REG); |
| 636 | |
| 637 | priv->state = STOPPED; |
| 638 | priv->request_to_stop = false; |
| 639 | |
| 640 | /* make sure active buffer is cancelled */ |
| 641 | spin_lock_irq(&priv->lock); |
| 642 | for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| 643 | vb = priv->queue_buf[i]; |
| 644 | if (vb) { |
| 645 | list_del_init(to_buf_list(vb)); |
| 646 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| 647 | } |
| 648 | } |
| 649 | spin_unlock_irq(&priv->lock); |
| 650 | |
| 651 | pm_runtime_put(ici->v4l2_dev.dev); |
| 652 | |
| 653 | dev_dbg(icd->parent, "R-Car VIN driver detached from camera %d\n", |
| 654 | icd->devnum); |
| 655 | } |
| 656 | |
| 657 | /* Called with .host_lock held */ |
| 658 | static int rcar_vin_clock_start(struct soc_camera_host *ici) |
| 659 | { |
| 660 | /* VIN does not have "mclk" */ |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | /* Called with .host_lock held */ |
| 665 | static void rcar_vin_clock_stop(struct soc_camera_host *ici) |
| 666 | { |
| 667 | /* VIN does not have "mclk" */ |
| 668 | } |
| 669 | |
| 670 | /* rect is guaranteed to not exceed the scaled camera rectangle */ |
| 671 | static int rcar_vin_set_rect(struct soc_camera_device *icd) |
| 672 | { |
| 673 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 674 | struct rcar_vin_cam *cam = icd->host_priv; |
| 675 | struct rcar_vin_priv *priv = ici->priv; |
| 676 | unsigned int left_offset, top_offset; |
| 677 | unsigned char dsize = 0; |
| 678 | struct v4l2_rect *cam_subrect = &cam->subrect; |
| 679 | |
| 680 | dev_dbg(icd->parent, "Crop %ux%u@%u:%u\n", |
| 681 | icd->user_width, icd->user_height, cam->vin_left, cam->vin_top); |
| 682 | |
| 683 | left_offset = cam->vin_left; |
| 684 | top_offset = cam->vin_top; |
| 685 | |
| 686 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_RGB32 && |
| 687 | priv->chip == RCAR_E1) |
| 688 | dsize = 1; |
| 689 | |
| 690 | dev_dbg(icd->parent, "Cam %ux%u@%u:%u\n", |
| 691 | cam->width, cam->height, cam->vin_left, cam->vin_top); |
| 692 | dev_dbg(icd->parent, "Cam subrect %ux%u@%u:%u\n", |
| 693 | cam_subrect->width, cam_subrect->height, |
| 694 | cam_subrect->left, cam_subrect->top); |
| 695 | |
| 696 | /* Set Start/End Pixel/Line Pre-Clip */ |
| 697 | iowrite32(left_offset << dsize, priv->base + VNSPPRC_REG); |
| 698 | iowrite32((left_offset + cam->width - 1) << dsize, |
| 699 | priv->base + VNEPPRC_REG); |
| 700 | switch (priv->field) { |
| 701 | case V4L2_FIELD_INTERLACED: |
| 702 | case V4L2_FIELD_INTERLACED_TB: |
| 703 | case V4L2_FIELD_INTERLACED_BT: |
| 704 | iowrite32(top_offset / 2, priv->base + VNSLPRC_REG); |
| 705 | iowrite32((top_offset + cam->height) / 2 - 1, |
| 706 | priv->base + VNELPRC_REG); |
| 707 | break; |
| 708 | default: |
| 709 | iowrite32(top_offset, priv->base + VNSLPRC_REG); |
| 710 | iowrite32(top_offset + cam->height - 1, |
| 711 | priv->base + VNELPRC_REG); |
| 712 | break; |
| 713 | } |
| 714 | |
| 715 | /* Set Start/End Pixel/Line Post-Clip */ |
| 716 | iowrite32(0, priv->base + VNSPPOC_REG); |
| 717 | iowrite32(0, priv->base + VNSLPOC_REG); |
| 718 | iowrite32((cam_subrect->width - 1) << dsize, priv->base + VNEPPOC_REG); |
| 719 | switch (priv->field) { |
| 720 | case V4L2_FIELD_INTERLACED: |
| 721 | case V4L2_FIELD_INTERLACED_TB: |
| 722 | case V4L2_FIELD_INTERLACED_BT: |
| 723 | iowrite32(cam_subrect->height / 2 - 1, |
| 724 | priv->base + VNELPOC_REG); |
| 725 | break; |
| 726 | default: |
| 727 | iowrite32(cam_subrect->height - 1, priv->base + VNELPOC_REG); |
| 728 | break; |
| 729 | } |
| 730 | |
| 731 | iowrite32(ALIGN(cam->width, 0x10), priv->base + VNIS_REG); |
| 732 | |
| 733 | return 0; |
| 734 | } |
| 735 | |
| 736 | static void capture_stop_preserve(struct rcar_vin_priv *priv, u32 *vnmc) |
| 737 | { |
| 738 | *vnmc = ioread32(priv->base + VNMC_REG); |
| 739 | /* module disable */ |
| 740 | iowrite32(*vnmc & ~VNMC_ME, priv->base + VNMC_REG); |
| 741 | } |
| 742 | |
| 743 | static void capture_restore(struct rcar_vin_priv *priv, u32 vnmc) |
| 744 | { |
| 745 | unsigned long timeout = jiffies + 10 * HZ; |
| 746 | |
| 747 | /* |
| 748 | * Wait until the end of the current frame. It can take a long time, |
| 749 | * but if it has been aborted by a MRST1 reset, it should exit sooner. |
| 750 | */ |
| 751 | while ((ioread32(priv->base + VNMS_REG) & VNMS_AV) && |
| 752 | time_before(jiffies, timeout)) |
| 753 | msleep(1); |
| 754 | |
| 755 | if (time_after(jiffies, timeout)) { |
| 756 | dev_err(priv->ici.v4l2_dev.dev, |
| 757 | "Timeout waiting for frame end! Interface problem?\n"); |
| 758 | return; |
| 759 | } |
| 760 | |
| 761 | iowrite32(vnmc, priv->base + VNMC_REG); |
| 762 | } |
| 763 | |
| 764 | #define VIN_MBUS_FLAGS (V4L2_MBUS_MASTER | \ |
| 765 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ |
| 766 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ |
| 767 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ |
| 768 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ |
| 769 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ |
| 770 | V4L2_MBUS_DATA_ACTIVE_HIGH) |
| 771 | |
| 772 | static int rcar_vin_set_bus_param(struct soc_camera_device *icd) |
| 773 | { |
| 774 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 775 | struct rcar_vin_priv *priv = ici->priv; |
| 776 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 777 | struct v4l2_mbus_config cfg; |
| 778 | unsigned long common_flags; |
| 779 | u32 vnmc; |
| 780 | u32 val; |
| 781 | int ret; |
| 782 | |
| 783 | capture_stop_preserve(priv, &vnmc); |
| 784 | |
| 785 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 786 | if (!ret) { |
| 787 | common_flags = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); |
| 788 | if (!common_flags) { |
| 789 | dev_warn(icd->parent, |
| 790 | "MBUS flags incompatible: camera 0x%x, host 0x%x\n", |
| 791 | cfg.flags, VIN_MBUS_FLAGS); |
| 792 | return -EINVAL; |
| 793 | } |
| 794 | } else if (ret != -ENOIOCTLCMD) { |
| 795 | return ret; |
| 796 | } else { |
| 797 | common_flags = VIN_MBUS_FLAGS; |
| 798 | } |
| 799 | |
| 800 | /* Make choises, based on platform preferences */ |
| 801 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
| 802 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { |
| 803 | if (priv->pdata_flags & RCAR_VIN_HSYNC_ACTIVE_LOW) |
| 804 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
| 805 | else |
| 806 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
| 807 | } |
| 808 | |
| 809 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
| 810 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { |
| 811 | if (priv->pdata_flags & RCAR_VIN_VSYNC_ACTIVE_LOW) |
| 812 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
| 813 | else |
| 814 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
| 815 | } |
| 816 | |
| 817 | cfg.flags = common_flags; |
| 818 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); |
| 819 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 820 | return ret; |
| 821 | |
| 822 | val = priv->field == V4L2_FIELD_NONE ? VNDMR2_FTEV : 0; |
| 823 | if (!(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) |
| 824 | val |= VNDMR2_VPS; |
| 825 | if (!(common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) |
| 826 | val |= VNDMR2_HPS; |
| 827 | iowrite32(val, priv->base + VNDMR2_REG); |
| 828 | |
| 829 | ret = rcar_vin_set_rect(icd); |
| 830 | if (ret < 0) |
| 831 | return ret; |
| 832 | |
| 833 | capture_restore(priv, vnmc); |
| 834 | |
| 835 | return 0; |
| 836 | } |
| 837 | |
| 838 | static int rcar_vin_try_bus_param(struct soc_camera_device *icd, |
| 839 | unsigned char buswidth) |
| 840 | { |
| 841 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 842 | struct v4l2_mbus_config cfg; |
| 843 | int ret; |
| 844 | |
| 845 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 846 | if (ret == -ENOIOCTLCMD) |
| 847 | return 0; |
| 848 | else if (ret) |
| 849 | return ret; |
| 850 | |
| 851 | if (buswidth > 24) |
| 852 | return -EINVAL; |
| 853 | |
| 854 | /* check is there common mbus flags */ |
| 855 | ret = soc_mbus_config_compatible(&cfg, VIN_MBUS_FLAGS); |
| 856 | if (ret) |
| 857 | return 0; |
| 858 | |
| 859 | dev_warn(icd->parent, |
| 860 | "MBUS flags incompatible: camera 0x%x, host 0x%x\n", |
| 861 | cfg.flags, VIN_MBUS_FLAGS); |
| 862 | |
| 863 | return -EINVAL; |
| 864 | } |
| 865 | |
| 866 | static bool rcar_vin_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
| 867 | { |
| 868 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 869 | (fmt->bits_per_sample > 8 && |
| 870 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
| 871 | } |
| 872 | |
| 873 | static const struct soc_mbus_pixelfmt rcar_vin_formats[] = { |
| 874 | { |
| 875 | .fourcc = V4L2_PIX_FMT_NV16, |
| 876 | .name = "NV16", |
| 877 | .bits_per_sample = 8, |
| 878 | .packing = SOC_MBUS_PACKING_2X8_PADHI, |
| 879 | .order = SOC_MBUS_ORDER_LE, |
| 880 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
| 881 | }, |
| 882 | { |
| 883 | .fourcc = V4L2_PIX_FMT_UYVY, |
| 884 | .name = "UYVY", |
| 885 | .bits_per_sample = 16, |
| 886 | .packing = SOC_MBUS_PACKING_NONE, |
| 887 | .order = SOC_MBUS_ORDER_LE, |
| 888 | .layout = SOC_MBUS_LAYOUT_PACKED, |
| 889 | }, |
| 890 | { |
| 891 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 892 | .name = "RGB565", |
| 893 | .bits_per_sample = 16, |
| 894 | .packing = SOC_MBUS_PACKING_NONE, |
| 895 | .order = SOC_MBUS_ORDER_LE, |
| 896 | .layout = SOC_MBUS_LAYOUT_PACKED, |
| 897 | }, |
| 898 | { |
| 899 | .fourcc = V4L2_PIX_FMT_RGB555X, |
| 900 | .name = "ARGB1555", |
| 901 | .bits_per_sample = 16, |
| 902 | .packing = SOC_MBUS_PACKING_NONE, |
| 903 | .order = SOC_MBUS_ORDER_LE, |
| 904 | .layout = SOC_MBUS_LAYOUT_PACKED, |
| 905 | }, |
| 906 | { |
| 907 | .fourcc = V4L2_PIX_FMT_RGB32, |
| 908 | .name = "RGB888", |
| 909 | .bits_per_sample = 32, |
| 910 | .packing = SOC_MBUS_PACKING_NONE, |
| 911 | .order = SOC_MBUS_ORDER_LE, |
| 912 | .layout = SOC_MBUS_LAYOUT_PACKED, |
| 913 | }, |
| 914 | }; |
| 915 | |
| 916 | static int rcar_vin_get_formats(struct soc_camera_device *icd, unsigned int idx, |
| 917 | struct soc_camera_format_xlate *xlate) |
| 918 | { |
| 919 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 920 | struct device *dev = icd->parent; |
| 921 | int ret, k, n; |
| 922 | int formats = 0; |
| 923 | struct rcar_vin_cam *cam; |
| 924 | enum v4l2_mbus_pixelcode code; |
| 925 | const struct soc_mbus_pixelfmt *fmt; |
| 926 | |
| 927 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 928 | if (ret < 0) |
| 929 | return 0; |
| 930 | |
| 931 | fmt = soc_mbus_get_fmtdesc(code); |
| 932 | if (!fmt) { |
| 933 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
| 934 | return 0; |
| 935 | } |
| 936 | |
| 937 | ret = rcar_vin_try_bus_param(icd, fmt->bits_per_sample); |
| 938 | if (ret < 0) |
| 939 | return 0; |
| 940 | |
| 941 | if (!icd->host_priv) { |
| 942 | struct v4l2_mbus_framefmt mf; |
| 943 | struct v4l2_rect rect; |
| 944 | struct device *dev = icd->parent; |
| 945 | int shift; |
| 946 | |
| 947 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 948 | if (ret < 0) |
| 949 | return ret; |
| 950 | |
| 951 | /* Cache current client geometry */ |
| 952 | ret = soc_camera_client_g_rect(sd, &rect); |
| 953 | if (ret == -ENOIOCTLCMD) { |
| 954 | /* Sensor driver doesn't support cropping */ |
| 955 | rect.left = 0; |
| 956 | rect.top = 0; |
| 957 | rect.width = mf.width; |
| 958 | rect.height = mf.height; |
| 959 | } else if (ret < 0) { |
| 960 | return ret; |
| 961 | } |
| 962 | |
| 963 | /* |
| 964 | * If sensor proposes too large format then try smaller ones: |
| 965 | * 1280x960, 640x480, 320x240 |
| 966 | */ |
| 967 | for (shift = 0; shift < 3; shift++) { |
| 968 | if (mf.width <= VIN_MAX_WIDTH && |
| 969 | mf.height <= VIN_MAX_HEIGHT) |
| 970 | break; |
| 971 | |
| 972 | mf.width = 1280 >> shift; |
| 973 | mf.height = 960 >> shift; |
| 974 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 975 | soc_camera_grp_id(icd), |
| 976 | video, s_mbus_fmt, |
| 977 | &mf); |
| 978 | if (ret < 0) |
| 979 | return ret; |
| 980 | } |
| 981 | |
| 982 | if (shift == 3) { |
| 983 | dev_err(dev, |
| 984 | "Failed to configure the client below %ux%x\n", |
| 985 | mf.width, mf.height); |
| 986 | return -EIO; |
| 987 | } |
| 988 | |
| 989 | dev_dbg(dev, "camera fmt %ux%u\n", mf.width, mf.height); |
| 990 | |
| 991 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
| 992 | if (!cam) |
| 993 | return -ENOMEM; |
| 994 | /* |
| 995 | * We are called with current camera crop, |
| 996 | * initialise subrect with it |
| 997 | */ |
| 998 | cam->rect = rect; |
| 999 | cam->subrect = rect; |
| 1000 | cam->width = mf.width; |
| 1001 | cam->height = mf.height; |
| 1002 | |
| 1003 | icd->host_priv = cam; |
| 1004 | } else { |
| 1005 | cam = icd->host_priv; |
| 1006 | } |
| 1007 | |
| 1008 | /* Beginning of a pass */ |
| 1009 | if (!idx) |
| 1010 | cam->extra_fmt = NULL; |
| 1011 | |
| 1012 | switch (code) { |
| 1013 | case V4L2_MBUS_FMT_YUYV8_1X16: |
| 1014 | case V4L2_MBUS_FMT_YUYV8_2X8: |
| 1015 | case V4L2_MBUS_FMT_YUYV10_2X10: |
| 1016 | if (cam->extra_fmt) |
| 1017 | break; |
| 1018 | |
| 1019 | /* Add all our formats that can be generated by VIN */ |
| 1020 | cam->extra_fmt = rcar_vin_formats; |
| 1021 | |
| 1022 | n = ARRAY_SIZE(rcar_vin_formats); |
| 1023 | formats += n; |
| 1024 | for (k = 0; xlate && k < n; k++, xlate++) { |
| 1025 | xlate->host_fmt = &rcar_vin_formats[k]; |
| 1026 | xlate->code = code; |
| 1027 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 1028 | rcar_vin_formats[k].name, code); |
| 1029 | } |
| 1030 | break; |
| 1031 | default: |
| 1032 | if (!rcar_vin_packing_supported(fmt)) |
| 1033 | return 0; |
| 1034 | |
| 1035 | dev_dbg(dev, "Providing format %s in pass-through mode\n", |
| 1036 | fmt->name); |
| 1037 | break; |
| 1038 | } |
| 1039 | |
| 1040 | /* Generic pass-through */ |
| 1041 | formats++; |
| 1042 | if (xlate) { |
| 1043 | xlate->host_fmt = fmt; |
| 1044 | xlate->code = code; |
| 1045 | xlate++; |
| 1046 | } |
| 1047 | |
| 1048 | return formats; |
| 1049 | } |
| 1050 | |
| 1051 | static void rcar_vin_put_formats(struct soc_camera_device *icd) |
| 1052 | { |
| 1053 | kfree(icd->host_priv); |
| 1054 | icd->host_priv = NULL; |
| 1055 | } |
| 1056 | |
| 1057 | static int rcar_vin_set_crop(struct soc_camera_device *icd, |
| 1058 | const struct v4l2_crop *a) |
| 1059 | { |
| 1060 | struct v4l2_crop a_writable = *a; |
| 1061 | const struct v4l2_rect *rect = &a_writable.c; |
| 1062 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1063 | struct rcar_vin_priv *priv = ici->priv; |
| 1064 | struct v4l2_crop cam_crop; |
| 1065 | struct rcar_vin_cam *cam = icd->host_priv; |
| 1066 | struct v4l2_rect *cam_rect = &cam_crop.c; |
| 1067 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1068 | struct device *dev = icd->parent; |
| 1069 | struct v4l2_mbus_framefmt mf; |
| 1070 | u32 vnmc; |
| 1071 | int ret, i; |
| 1072 | |
| 1073 | dev_dbg(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
| 1074 | rect->left, rect->top); |
| 1075 | |
| 1076 | /* During camera cropping its output window can change too, stop VIN */ |
| 1077 | capture_stop_preserve(priv, &vnmc); |
| 1078 | dev_dbg(dev, "VNMC_REG 0x%x\n", vnmc); |
| 1079 | |
| 1080 | /* Apply iterative camera S_CROP for new input window. */ |
| 1081 | ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop, |
| 1082 | &cam->rect, &cam->subrect); |
| 1083 | if (ret < 0) |
| 1084 | return ret; |
| 1085 | |
| 1086 | dev_dbg(dev, "camera cropped to %ux%u@%u:%u\n", |
| 1087 | cam_rect->width, cam_rect->height, |
| 1088 | cam_rect->left, cam_rect->top); |
| 1089 | |
| 1090 | /* On success cam_crop contains current camera crop */ |
| 1091 | |
| 1092 | /* Retrieve camera output window */ |
| 1093 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 1094 | if (ret < 0) |
| 1095 | return ret; |
| 1096 | |
| 1097 | if (mf.width > VIN_MAX_WIDTH || mf.height > VIN_MAX_HEIGHT) |
| 1098 | return -EINVAL; |
| 1099 | |
| 1100 | /* Cache camera output window */ |
| 1101 | cam->width = mf.width; |
| 1102 | cam->height = mf.height; |
| 1103 | |
| 1104 | icd->user_width = cam->width; |
| 1105 | icd->user_height = cam->height; |
| 1106 | |
| 1107 | cam->vin_left = rect->left & ~1; |
| 1108 | cam->vin_top = rect->top & ~1; |
| 1109 | |
| 1110 | /* Use VIN cropping to crop to the new window. */ |
| 1111 | ret = rcar_vin_set_rect(icd); |
| 1112 | if (ret < 0) |
| 1113 | return ret; |
| 1114 | |
| 1115 | cam->subrect = *rect; |
| 1116 | |
| 1117 | dev_dbg(dev, "VIN cropped to %ux%u@%u:%u\n", |
| 1118 | icd->user_width, icd->user_height, |
| 1119 | cam->vin_left, cam->vin_top); |
| 1120 | |
| 1121 | /* Restore capture */ |
| 1122 | for (i = 0; i < MAX_BUFFER_NUM; i++) { |
| 1123 | if (priv->queue_buf[i] && priv->state == STOPPED) { |
| 1124 | vnmc |= VNMC_ME; |
| 1125 | break; |
| 1126 | } |
| 1127 | } |
| 1128 | capture_restore(priv, vnmc); |
| 1129 | |
| 1130 | /* Even if only camera cropping succeeded */ |
| 1131 | return ret; |
| 1132 | } |
| 1133 | |
| 1134 | static int rcar_vin_get_crop(struct soc_camera_device *icd, |
| 1135 | struct v4l2_crop *a) |
| 1136 | { |
| 1137 | struct rcar_vin_cam *cam = icd->host_priv; |
| 1138 | |
| 1139 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1140 | a->c = cam->subrect; |
| 1141 | |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
| 1145 | /* Similar to set_crop multistage iterative algorithm */ |
| 1146 | static int rcar_vin_set_fmt(struct soc_camera_device *icd, |
| 1147 | struct v4l2_format *f) |
| 1148 | { |
| 1149 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1150 | struct rcar_vin_priv *priv = ici->priv; |
| 1151 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1152 | struct rcar_vin_cam *cam = icd->host_priv; |
| 1153 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 1154 | struct v4l2_mbus_framefmt mf; |
| 1155 | struct device *dev = icd->parent; |
| 1156 | __u32 pixfmt = pix->pixelformat; |
| 1157 | const struct soc_camera_format_xlate *xlate; |
| 1158 | unsigned int vin_sub_width = 0, vin_sub_height = 0; |
| 1159 | int ret; |
| 1160 | bool can_scale; |
| 1161 | enum v4l2_field field; |
| 1162 | v4l2_std_id std; |
| 1163 | |
| 1164 | dev_dbg(dev, "S_FMT(pix=0x%x, %ux%u)\n", |
| 1165 | pixfmt, pix->width, pix->height); |
| 1166 | |
| 1167 | switch (pix->field) { |
| 1168 | default: |
| 1169 | pix->field = V4L2_FIELD_NONE; |
| 1170 | /* fall-through */ |
| 1171 | case V4L2_FIELD_NONE: |
| 1172 | case V4L2_FIELD_TOP: |
| 1173 | case V4L2_FIELD_BOTTOM: |
| 1174 | case V4L2_FIELD_INTERLACED_TB: |
| 1175 | case V4L2_FIELD_INTERLACED_BT: |
| 1176 | field = pix->field; |
| 1177 | break; |
| 1178 | case V4L2_FIELD_INTERLACED: |
| 1179 | /* Query for standard if not explicitly mentioned _TB/_BT */ |
| 1180 | ret = v4l2_subdev_call(sd, video, querystd, &std); |
| 1181 | if (ret < 0) |
| 1182 | std = V4L2_STD_625_50; |
| 1183 | |
| 1184 | field = std & V4L2_STD_625_50 ? V4L2_FIELD_INTERLACED_TB : |
| 1185 | V4L2_FIELD_INTERLACED_BT; |
| 1186 | break; |
| 1187 | } |
| 1188 | |
| 1189 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1190 | if (!xlate) { |
| 1191 | dev_warn(dev, "Format %x not found\n", pixfmt); |
| 1192 | return -EINVAL; |
| 1193 | } |
| 1194 | /* Calculate client output geometry */ |
| 1195 | soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, |
| 1196 | 12); |
| 1197 | mf.field = pix->field; |
| 1198 | mf.colorspace = pix->colorspace; |
| 1199 | mf.code = xlate->code; |
| 1200 | |
| 1201 | switch (pixfmt) { |
| 1202 | case V4L2_PIX_FMT_RGB32: |
| 1203 | can_scale = priv->chip != RCAR_E1; |
| 1204 | break; |
| 1205 | case V4L2_PIX_FMT_UYVY: |
| 1206 | case V4L2_PIX_FMT_YUYV: |
| 1207 | case V4L2_PIX_FMT_RGB565: |
| 1208 | case V4L2_PIX_FMT_RGB555X: |
| 1209 | can_scale = true; |
| 1210 | break; |
| 1211 | default: |
| 1212 | can_scale = false; |
| 1213 | break; |
| 1214 | } |
| 1215 | |
| 1216 | dev_dbg(dev, "request camera output %ux%u\n", mf.width, mf.height); |
| 1217 | |
| 1218 | ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect, |
| 1219 | &mf, &vin_sub_width, &vin_sub_height, |
| 1220 | can_scale, 12); |
| 1221 | |
| 1222 | /* Done with the camera. Now see if we can improve the result */ |
| 1223 | dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n", |
| 1224 | ret, mf.width, mf.height, pix->width, pix->height); |
| 1225 | |
| 1226 | if (ret == -ENOIOCTLCMD) |
| 1227 | dev_dbg(dev, "Sensor doesn't support scaling\n"); |
| 1228 | else if (ret < 0) |
| 1229 | return ret; |
| 1230 | |
| 1231 | if (mf.code != xlate->code) |
| 1232 | return -EINVAL; |
| 1233 | |
| 1234 | /* Prepare VIN crop */ |
| 1235 | cam->width = mf.width; |
| 1236 | cam->height = mf.height; |
| 1237 | |
| 1238 | /* Use VIN scaling to scale to the requested user window. */ |
| 1239 | |
| 1240 | /* We cannot scale up */ |
| 1241 | if (pix->width > vin_sub_width) |
| 1242 | vin_sub_width = pix->width; |
| 1243 | |
| 1244 | if (pix->height > vin_sub_height) |
| 1245 | vin_sub_height = pix->height; |
| 1246 | |
| 1247 | pix->colorspace = mf.colorspace; |
| 1248 | |
| 1249 | if (!can_scale) { |
| 1250 | pix->width = vin_sub_width; |
| 1251 | pix->height = vin_sub_height; |
| 1252 | } |
| 1253 | |
| 1254 | /* |
| 1255 | * We have calculated CFLCR, the actual configuration will be performed |
| 1256 | * in rcar_vin_set_bus_param() |
| 1257 | */ |
| 1258 | |
| 1259 | dev_dbg(dev, "W: %u : %u, H: %u : %u\n", |
| 1260 | vin_sub_width, pix->width, vin_sub_height, pix->height); |
| 1261 | |
| 1262 | icd->current_fmt = xlate; |
| 1263 | |
| 1264 | priv->field = field; |
| 1265 | |
| 1266 | return 0; |
| 1267 | } |
| 1268 | |
| 1269 | static int rcar_vin_try_fmt(struct soc_camera_device *icd, |
| 1270 | struct v4l2_format *f) |
| 1271 | { |
| 1272 | const struct soc_camera_format_xlate *xlate; |
| 1273 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 1274 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1275 | struct v4l2_mbus_framefmt mf; |
| 1276 | __u32 pixfmt = pix->pixelformat; |
| 1277 | int width, height; |
| 1278 | int ret; |
| 1279 | |
| 1280 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1281 | if (!xlate) { |
| 1282 | xlate = icd->current_fmt; |
| 1283 | dev_dbg(icd->parent, "Format %x not found, keeping %x\n", |
| 1284 | pixfmt, xlate->host_fmt->fourcc); |
| 1285 | pixfmt = xlate->host_fmt->fourcc; |
| 1286 | pix->pixelformat = pixfmt; |
| 1287 | pix->colorspace = icd->colorspace; |
| 1288 | } |
| 1289 | |
| 1290 | /* FIXME: calculate using depth and bus width */ |
| 1291 | v4l_bound_align_image(&pix->width, 2, VIN_MAX_WIDTH, 1, |
| 1292 | &pix->height, 4, VIN_MAX_HEIGHT, 2, 0); |
| 1293 | |
| 1294 | width = pix->width; |
| 1295 | height = pix->height; |
| 1296 | |
| 1297 | /* let soc-camera calculate these values */ |
| 1298 | pix->bytesperline = 0; |
| 1299 | pix->sizeimage = 0; |
| 1300 | |
| 1301 | /* limit to sensor capabilities */ |
| 1302 | mf.width = pix->width; |
| 1303 | mf.height = pix->height; |
| 1304 | mf.field = pix->field; |
| 1305 | mf.code = xlate->code; |
| 1306 | mf.colorspace = pix->colorspace; |
| 1307 | |
| 1308 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
| 1309 | video, try_mbus_fmt, &mf); |
| 1310 | if (ret < 0) |
| 1311 | return ret; |
| 1312 | |
| 1313 | pix->width = mf.width; |
| 1314 | pix->height = mf.height; |
| 1315 | pix->field = mf.field; |
| 1316 | pix->colorspace = mf.colorspace; |
| 1317 | |
| 1318 | if (pixfmt == V4L2_PIX_FMT_NV16) { |
| 1319 | /* FIXME: check against rect_max after converting soc-camera */ |
| 1320 | /* We can scale precisely, need a bigger image from camera */ |
| 1321 | if (pix->width < width || pix->height < height) { |
| 1322 | /* |
| 1323 | * We presume, the sensor behaves sanely, i.e. if |
| 1324 | * requested a bigger rectangle, it will not return a |
| 1325 | * smaller one. |
| 1326 | */ |
| 1327 | mf.width = VIN_MAX_WIDTH; |
| 1328 | mf.height = VIN_MAX_HEIGHT; |
| 1329 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
| 1330 | soc_camera_grp_id(icd), |
| 1331 | video, try_mbus_fmt, |
| 1332 | &mf); |
| 1333 | if (ret < 0) { |
| 1334 | dev_err(icd->parent, |
| 1335 | "client try_fmt() = %d\n", ret); |
| 1336 | return ret; |
| 1337 | } |
| 1338 | } |
| 1339 | /* We will scale exactly */ |
| 1340 | if (mf.width > width) |
| 1341 | pix->width = width; |
| 1342 | if (mf.height > height) |
| 1343 | pix->height = height; |
| 1344 | } |
| 1345 | |
| 1346 | return ret; |
| 1347 | } |
| 1348 | |
| 1349 | static unsigned int rcar_vin_poll(struct file *file, poll_table *pt) |
| 1350 | { |
| 1351 | struct soc_camera_device *icd = file->private_data; |
| 1352 | |
| 1353 | return vb2_poll(&icd->vb2_vidq, file, pt); |
| 1354 | } |
| 1355 | |
| 1356 | static int rcar_vin_querycap(struct soc_camera_host *ici, |
| 1357 | struct v4l2_capability *cap) |
| 1358 | { |
| 1359 | strlcpy(cap->card, "R_Car_VIN", sizeof(cap->card)); |
| 1360 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1361 | return 0; |
| 1362 | } |
| 1363 | |
| 1364 | static int rcar_vin_init_videobuf2(struct vb2_queue *vq, |
| 1365 | struct soc_camera_device *icd) |
| 1366 | { |
| 1367 | vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1368 | vq->io_modes = VB2_MMAP | VB2_USERPTR; |
| 1369 | vq->drv_priv = icd; |
| 1370 | vq->ops = &rcar_vin_vb2_ops; |
| 1371 | vq->mem_ops = &vb2_dma_contig_memops; |
| 1372 | vq->buf_struct_size = sizeof(struct rcar_vin_buffer); |
| 1373 | vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| 1374 | |
| 1375 | return vb2_queue_init(vq); |
| 1376 | } |
| 1377 | |
| 1378 | static struct soc_camera_host_ops rcar_vin_host_ops = { |
| 1379 | .owner = THIS_MODULE, |
| 1380 | .add = rcar_vin_add_device, |
| 1381 | .remove = rcar_vin_remove_device, |
| 1382 | .clock_start = rcar_vin_clock_start, |
| 1383 | .clock_stop = rcar_vin_clock_stop, |
| 1384 | .get_formats = rcar_vin_get_formats, |
| 1385 | .put_formats = rcar_vin_put_formats, |
| 1386 | .get_crop = rcar_vin_get_crop, |
| 1387 | .set_crop = rcar_vin_set_crop, |
| 1388 | .try_fmt = rcar_vin_try_fmt, |
| 1389 | .set_fmt = rcar_vin_set_fmt, |
| 1390 | .poll = rcar_vin_poll, |
| 1391 | .querycap = rcar_vin_querycap, |
| 1392 | .set_bus_param = rcar_vin_set_bus_param, |
| 1393 | .init_videobuf2 = rcar_vin_init_videobuf2, |
| 1394 | }; |
| 1395 | |
| 1396 | #ifdef CONFIG_OF |
| 1397 | static struct of_device_id rcar_vin_of_table[] = { |
| 1398 | { .compatible = "renesas,vin-r8a7791", .data = (void *)RCAR_GEN2 }, |
| 1399 | { .compatible = "renesas,vin-r8a7790", .data = (void *)RCAR_GEN2 }, |
| 1400 | { .compatible = "renesas,vin-r8a7779", .data = (void *)RCAR_H1 }, |
| 1401 | { .compatible = "renesas,vin-r8a7778", .data = (void *)RCAR_M1 }, |
| 1402 | { }, |
| 1403 | }; |
| 1404 | MODULE_DEVICE_TABLE(of, rcar_vin_of_table); |
| 1405 | #endif |
| 1406 | |
| 1407 | static struct platform_device_id rcar_vin_id_table[] = { |
| 1408 | { "r8a7791-vin", RCAR_GEN2 }, |
| 1409 | { "r8a7790-vin", RCAR_GEN2 }, |
| 1410 | { "r8a7779-vin", RCAR_H1 }, |
| 1411 | { "r8a7778-vin", RCAR_M1 }, |
| 1412 | { "uPD35004-vin", RCAR_E1 }, |
| 1413 | {}, |
| 1414 | }; |
| 1415 | MODULE_DEVICE_TABLE(platform, rcar_vin_id_table); |
| 1416 | |
| 1417 | static int rcar_vin_probe(struct platform_device *pdev) |
| 1418 | { |
| 1419 | const struct of_device_id *match = NULL; |
| 1420 | struct rcar_vin_priv *priv; |
| 1421 | struct resource *mem; |
| 1422 | struct rcar_vin_platform_data *pdata; |
| 1423 | unsigned int pdata_flags; |
| 1424 | int irq, ret; |
| 1425 | |
| 1426 | if (pdev->dev.of_node) { |
| 1427 | struct v4l2_of_endpoint ep; |
| 1428 | struct device_node *np; |
| 1429 | |
| 1430 | match = of_match_device(of_match_ptr(rcar_vin_of_table), |
| 1431 | &pdev->dev); |
| 1432 | |
| 1433 | np = of_graph_get_next_endpoint(pdev->dev.of_node, NULL); |
| 1434 | if (!np) { |
| 1435 | dev_err(&pdev->dev, "could not find endpoint\n"); |
| 1436 | return -EINVAL; |
| 1437 | } |
| 1438 | |
| 1439 | ret = v4l2_of_parse_endpoint(np, &ep); |
| 1440 | if (ret) { |
| 1441 | dev_err(&pdev->dev, "could not parse endpoint\n"); |
| 1442 | return ret; |
| 1443 | } |
| 1444 | |
| 1445 | if (ep.bus_type == V4L2_MBUS_BT656) |
| 1446 | pdata_flags = RCAR_VIN_BT656; |
| 1447 | else { |
| 1448 | pdata_flags = 0; |
| 1449 | if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) |
| 1450 | pdata_flags |= RCAR_VIN_HSYNC_ACTIVE_LOW; |
| 1451 | if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) |
| 1452 | pdata_flags |= RCAR_VIN_VSYNC_ACTIVE_LOW; |
| 1453 | } |
| 1454 | |
| 1455 | of_node_put(np); |
| 1456 | |
| 1457 | dev_dbg(&pdev->dev, "pdata_flags = %08x\n", pdata_flags); |
| 1458 | } else { |
| 1459 | pdata = pdev->dev.platform_data; |
| 1460 | if (!pdata || !pdata->flags) { |
| 1461 | dev_err(&pdev->dev, "platform data not set\n"); |
| 1462 | return -EINVAL; |
| 1463 | } |
| 1464 | pdata_flags = pdata->flags; |
| 1465 | } |
| 1466 | |
| 1467 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1468 | if (mem == NULL) |
| 1469 | return -EINVAL; |
| 1470 | |
| 1471 | irq = platform_get_irq(pdev, 0); |
| 1472 | if (irq <= 0) |
| 1473 | return -EINVAL; |
| 1474 | |
| 1475 | priv = devm_kzalloc(&pdev->dev, sizeof(struct rcar_vin_priv), |
| 1476 | GFP_KERNEL); |
| 1477 | if (!priv) |
| 1478 | return -ENOMEM; |
| 1479 | |
| 1480 | priv->base = devm_ioremap_resource(&pdev->dev, mem); |
| 1481 | if (IS_ERR(priv->base)) |
| 1482 | return PTR_ERR(priv->base); |
| 1483 | |
| 1484 | ret = devm_request_irq(&pdev->dev, irq, rcar_vin_irq, IRQF_SHARED, |
| 1485 | dev_name(&pdev->dev), priv); |
| 1486 | if (ret) |
| 1487 | return ret; |
| 1488 | |
| 1489 | priv->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 1490 | if (IS_ERR(priv->alloc_ctx)) |
| 1491 | return PTR_ERR(priv->alloc_ctx); |
| 1492 | |
| 1493 | priv->ici.priv = priv; |
| 1494 | priv->ici.v4l2_dev.dev = &pdev->dev; |
| 1495 | priv->ici.drv_name = dev_name(&pdev->dev); |
| 1496 | priv->ici.ops = &rcar_vin_host_ops; |
| 1497 | |
| 1498 | priv->pdata_flags = pdata_flags; |
| 1499 | if (!match) { |
| 1500 | priv->ici.nr = pdev->id; |
| 1501 | priv->chip = pdev->id_entry->driver_data; |
| 1502 | } else { |
| 1503 | priv->ici.nr = of_alias_get_id(pdev->dev.of_node, "vin"); |
| 1504 | priv->chip = (enum chip_id)match->data; |
| 1505 | }; |
| 1506 | |
| 1507 | spin_lock_init(&priv->lock); |
| 1508 | INIT_LIST_HEAD(&priv->capture); |
| 1509 | |
| 1510 | priv->state = STOPPED; |
| 1511 | |
| 1512 | pm_suspend_ignore_children(&pdev->dev, true); |
| 1513 | pm_runtime_enable(&pdev->dev); |
| 1514 | |
| 1515 | ret = soc_camera_host_register(&priv->ici); |
| 1516 | if (ret) |
| 1517 | goto cleanup; |
| 1518 | |
| 1519 | return 0; |
| 1520 | |
| 1521 | cleanup: |
| 1522 | pm_runtime_disable(&pdev->dev); |
| 1523 | vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); |
| 1524 | |
| 1525 | return ret; |
| 1526 | } |
| 1527 | |
| 1528 | static int rcar_vin_remove(struct platform_device *pdev) |
| 1529 | { |
| 1530 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 1531 | struct rcar_vin_priv *priv = container_of(soc_host, |
| 1532 | struct rcar_vin_priv, ici); |
| 1533 | |
| 1534 | soc_camera_host_unregister(soc_host); |
| 1535 | pm_runtime_disable(&pdev->dev); |
| 1536 | vb2_dma_contig_cleanup_ctx(priv->alloc_ctx); |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | static struct platform_driver rcar_vin_driver = { |
| 1542 | .probe = rcar_vin_probe, |
| 1543 | .remove = rcar_vin_remove, |
| 1544 | .driver = { |
| 1545 | .name = DRV_NAME, |
| 1546 | .owner = THIS_MODULE, |
| 1547 | .of_match_table = of_match_ptr(rcar_vin_of_table), |
| 1548 | }, |
| 1549 | .id_table = rcar_vin_id_table, |
| 1550 | }; |
| 1551 | |
| 1552 | module_platform_driver(rcar_vin_driver); |
| 1553 | |
| 1554 | MODULE_LICENSE("GPL"); |
| 1555 | MODULE_ALIAS("platform:rcar_vin"); |
| 1556 | MODULE_DESCRIPTION("Renesas R-Car VIN camera host driver"); |