Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * Freescale VIU video driver |
| 5 | * |
| 6 | * Authors: Hongjun Chen <hong-jun.chen@freescale.com> |
| 7 | * Porting to 2.6.35 by DENX Software Engineering, |
| 8 | * Anatolij Gustschin <agust@denx.de> |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/module.h> |
| 18 | #include <linux/clk.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/i2c.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/io.h> |
| 24 | #include <linux/of_platform.h> |
Anatolij Gustschin | e69e34e | 2010-09-15 18:31:09 -0300 | [diff] [blame] | 25 | #include <linux/slab.h> |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 26 | #include <linux/version.h> |
| 27 | #include <media/v4l2-common.h> |
| 28 | #include <media/v4l2-device.h> |
| 29 | #include <media/v4l2-ioctl.h> |
| 30 | #include <media/videobuf-dma-contig.h> |
| 31 | |
| 32 | #define DRV_NAME "fsl_viu" |
| 33 | #define VIU_MAJOR_VERSION 0 |
| 34 | #define VIU_MINOR_VERSION 5 |
| 35 | #define VIU_RELEASE 0 |
| 36 | #define VIU_VERSION KERNEL_VERSION(VIU_MAJOR_VERSION, \ |
| 37 | VIU_MINOR_VERSION, \ |
| 38 | VIU_RELEASE) |
| 39 | |
| 40 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ |
| 41 | |
| 42 | #define VIU_VID_MEM_LIMIT 4 /* Video memory limit, in Mb */ |
| 43 | |
| 44 | /* I2C address of video decoder chip is 0x4A */ |
| 45 | #define VIU_VIDEO_DECODER_ADDR 0x25 |
| 46 | |
| 47 | /* supported controls */ |
| 48 | static struct v4l2_queryctrl viu_qctrl[] = { |
| 49 | { |
| 50 | .id = V4L2_CID_BRIGHTNESS, |
| 51 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 52 | .name = "Brightness", |
| 53 | .minimum = 0, |
| 54 | .maximum = 255, |
| 55 | .step = 1, |
| 56 | .default_value = 127, |
| 57 | .flags = 0, |
| 58 | }, { |
| 59 | .id = V4L2_CID_CONTRAST, |
| 60 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 61 | .name = "Contrast", |
| 62 | .minimum = 0, |
| 63 | .maximum = 255, |
| 64 | .step = 0x1, |
| 65 | .default_value = 0x10, |
| 66 | .flags = 0, |
| 67 | }, { |
| 68 | .id = V4L2_CID_SATURATION, |
| 69 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 70 | .name = "Saturation", |
| 71 | .minimum = 0, |
| 72 | .maximum = 255, |
| 73 | .step = 0x1, |
| 74 | .default_value = 127, |
| 75 | .flags = 0, |
| 76 | }, { |
| 77 | .id = V4L2_CID_HUE, |
| 78 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 79 | .name = "Hue", |
| 80 | .minimum = -128, |
| 81 | .maximum = 127, |
| 82 | .step = 0x1, |
| 83 | .default_value = 0, |
| 84 | .flags = 0, |
| 85 | } |
| 86 | }; |
| 87 | |
| 88 | static int qctl_regs[ARRAY_SIZE(viu_qctrl)]; |
| 89 | |
| 90 | static int info_level; |
| 91 | |
| 92 | #define dprintk(level, fmt, arg...) \ |
| 93 | do { \ |
| 94 | if (level <= info_level) \ |
| 95 | printk(KERN_DEBUG "viu: " fmt , ## arg); \ |
| 96 | } while (0) |
| 97 | |
| 98 | /* |
| 99 | * Basic structures |
| 100 | */ |
| 101 | struct viu_fmt { |
| 102 | char name[32]; |
| 103 | u32 fourcc; /* v4l2 format id */ |
| 104 | u32 pixelformat; |
| 105 | int depth; |
| 106 | }; |
| 107 | |
| 108 | static struct viu_fmt formats[] = { |
| 109 | { |
| 110 | .name = "RGB-16 (5/B-6/G-5/R)", |
| 111 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 112 | .pixelformat = V4L2_PIX_FMT_RGB565, |
| 113 | .depth = 16, |
| 114 | }, { |
| 115 | .name = "RGB-32 (A-R-G-B)", |
| 116 | .fourcc = V4L2_PIX_FMT_RGB32, |
| 117 | .pixelformat = V4L2_PIX_FMT_RGB32, |
| 118 | .depth = 32, |
| 119 | } |
| 120 | }; |
| 121 | |
| 122 | struct viu_dev; |
| 123 | struct viu_buf; |
| 124 | |
| 125 | /* buffer for one video frame */ |
| 126 | struct viu_buf { |
| 127 | /* common v4l buffer stuff -- must be first */ |
| 128 | struct videobuf_buffer vb; |
| 129 | struct viu_fmt *fmt; |
| 130 | }; |
| 131 | |
| 132 | struct viu_dmaqueue { |
| 133 | struct viu_dev *dev; |
| 134 | struct list_head active; |
| 135 | struct list_head queued; |
| 136 | struct timer_list timeout; |
| 137 | }; |
| 138 | |
| 139 | struct viu_status { |
| 140 | u32 field_irq; |
| 141 | u32 vsync_irq; |
| 142 | u32 hsync_irq; |
| 143 | u32 vstart_irq; |
| 144 | u32 dma_end_irq; |
| 145 | u32 error_irq; |
| 146 | }; |
| 147 | |
| 148 | struct viu_reg { |
| 149 | u32 status_cfg; |
| 150 | u32 luminance; |
| 151 | u32 chroma_r; |
| 152 | u32 chroma_g; |
| 153 | u32 chroma_b; |
| 154 | u32 field_base_addr; |
| 155 | u32 dma_inc; |
| 156 | u32 picture_count; |
| 157 | u32 req_alarm; |
| 158 | u32 alpha; |
| 159 | } __attribute__ ((packed)); |
| 160 | |
| 161 | struct viu_dev { |
| 162 | struct v4l2_device v4l2_dev; |
| 163 | struct mutex lock; |
| 164 | spinlock_t slock; |
| 165 | int users; |
| 166 | |
| 167 | struct device *dev; |
| 168 | /* various device info */ |
| 169 | struct video_device *vdev; |
| 170 | struct viu_dmaqueue vidq; |
| 171 | enum v4l2_field capfield; |
| 172 | int field; |
| 173 | int first; |
| 174 | int dma_done; |
| 175 | |
| 176 | /* Hardware register area */ |
| 177 | struct viu_reg *vr; |
| 178 | |
| 179 | /* Interrupt vector */ |
| 180 | int irq; |
| 181 | struct viu_status irqs; |
| 182 | |
| 183 | /* video overlay */ |
| 184 | struct v4l2_framebuffer ovbuf; |
| 185 | struct viu_fmt *ovfmt; |
| 186 | unsigned int ovenable; |
| 187 | enum v4l2_field ovfield; |
| 188 | |
| 189 | /* crop */ |
| 190 | struct v4l2_rect crop_current; |
| 191 | |
| 192 | /* clock pointer */ |
| 193 | struct clk *clk; |
| 194 | |
| 195 | /* decoder */ |
| 196 | struct v4l2_subdev *decoder; |
| 197 | }; |
| 198 | |
| 199 | struct viu_fh { |
| 200 | struct viu_dev *dev; |
| 201 | |
| 202 | /* video capture */ |
| 203 | struct videobuf_queue vb_vidq; |
| 204 | spinlock_t vbq_lock; /* spinlock for the videobuf queue */ |
| 205 | |
| 206 | /* video overlay */ |
| 207 | struct v4l2_window win; |
| 208 | struct v4l2_clip clips[1]; |
| 209 | |
| 210 | /* video capture */ |
| 211 | struct viu_fmt *fmt; |
| 212 | int width, height, sizeimage; |
| 213 | enum v4l2_buf_type type; |
| 214 | }; |
| 215 | |
| 216 | static struct viu_reg reg_val; |
| 217 | |
| 218 | /* |
| 219 | * Macro definitions of VIU registers |
| 220 | */ |
| 221 | |
| 222 | /* STATUS_CONFIG register */ |
| 223 | enum status_config { |
| 224 | SOFT_RST = 1 << 0, |
| 225 | |
| 226 | ERR_MASK = 0x0f << 4, /* Error code mask */ |
| 227 | ERR_NO = 0x00, /* No error */ |
| 228 | ERR_DMA_V = 0x01 << 4, /* DMA in vertical active */ |
| 229 | ERR_DMA_VB = 0x02 << 4, /* DMA in vertical blanking */ |
| 230 | ERR_LINE_TOO_LONG = 0x04 << 4, /* Line too long */ |
| 231 | ERR_TOO_MANG_LINES = 0x05 << 4, /* Too many lines in field */ |
| 232 | ERR_LINE_TOO_SHORT = 0x06 << 4, /* Line too short */ |
| 233 | ERR_NOT_ENOUGH_LINE = 0x07 << 4, /* Not enough lines in field */ |
| 234 | ERR_FIFO_OVERFLOW = 0x08 << 4, /* FIFO overflow */ |
| 235 | ERR_FIFO_UNDERFLOW = 0x09 << 4, /* FIFO underflow */ |
| 236 | ERR_1bit_ECC = 0x0a << 4, /* One bit ECC error */ |
| 237 | ERR_MORE_ECC = 0x0b << 4, /* Two/more bits ECC error */ |
| 238 | |
| 239 | INT_FIELD_EN = 0x01 << 8, /* Enable field interrupt */ |
| 240 | INT_VSYNC_EN = 0x01 << 9, /* Enable vsync interrupt */ |
| 241 | INT_HSYNC_EN = 0x01 << 10, /* Enable hsync interrupt */ |
| 242 | INT_VSTART_EN = 0x01 << 11, /* Enable vstart interrupt */ |
| 243 | INT_DMA_END_EN = 0x01 << 12, /* Enable DMA end interrupt */ |
| 244 | INT_ERROR_EN = 0x01 << 13, /* Enable error interrupt */ |
| 245 | INT_ECC_EN = 0x01 << 14, /* Enable ECC interrupt */ |
| 246 | |
| 247 | INT_FIELD_STATUS = 0x01 << 16, /* field interrupt status */ |
| 248 | INT_VSYNC_STATUS = 0x01 << 17, /* vsync interrupt status */ |
| 249 | INT_HSYNC_STATUS = 0x01 << 18, /* hsync interrupt status */ |
| 250 | INT_VSTART_STATUS = 0x01 << 19, /* vstart interrupt status */ |
| 251 | INT_DMA_END_STATUS = 0x01 << 20, /* DMA end interrupt status */ |
| 252 | INT_ERROR_STATUS = 0x01 << 21, /* error interrupt status */ |
| 253 | |
| 254 | DMA_ACT = 0x01 << 27, /* Enable DMA transfer */ |
| 255 | FIELD_NO = 0x01 << 28, /* Field number */ |
| 256 | DITHER_ON = 0x01 << 29, /* Dithering is on */ |
| 257 | ROUND_ON = 0x01 << 30, /* Round is on */ |
| 258 | MODE_32BIT = 0x01 << 31, /* Data in RGBa888, |
| 259 | * 0 in RGB565 |
| 260 | */ |
| 261 | }; |
| 262 | |
| 263 | #define norm_maxw() 720 |
| 264 | #define norm_maxh() 576 |
| 265 | |
| 266 | #define INT_ALL_STATUS (INT_FIELD_STATUS | INT_VSYNC_STATUS | \ |
| 267 | INT_HSYNC_STATUS | INT_VSTART_STATUS | \ |
| 268 | INT_DMA_END_STATUS | INT_ERROR_STATUS) |
| 269 | |
| 270 | #define NUM_FORMATS ARRAY_SIZE(formats) |
| 271 | |
| 272 | static irqreturn_t viu_intr(int irq, void *dev_id); |
| 273 | |
| 274 | struct viu_fmt *format_by_fourcc(int fourcc) |
| 275 | { |
| 276 | int i; |
| 277 | |
| 278 | for (i = 0; i < NUM_FORMATS; i++) { |
| 279 | if (formats[i].pixelformat == fourcc) |
| 280 | return formats + i; |
| 281 | } |
| 282 | |
| 283 | dprintk(0, "unknown pixelformat:'%4.4s'\n", (char *)&fourcc); |
| 284 | return NULL; |
| 285 | } |
| 286 | |
| 287 | void viu_start_dma(struct viu_dev *dev) |
| 288 | { |
| 289 | struct viu_reg *vr = dev->vr; |
| 290 | |
| 291 | dev->field = 0; |
| 292 | |
| 293 | /* Enable DMA operation */ |
| 294 | out_be32(&vr->status_cfg, SOFT_RST); |
| 295 | out_be32(&vr->status_cfg, INT_FIELD_EN); |
| 296 | } |
| 297 | |
| 298 | void viu_stop_dma(struct viu_dev *dev) |
| 299 | { |
| 300 | struct viu_reg *vr = dev->vr; |
| 301 | int cnt = 100; |
| 302 | u32 status_cfg; |
| 303 | |
| 304 | out_be32(&vr->status_cfg, 0); |
| 305 | |
| 306 | /* Clear pending interrupts */ |
| 307 | status_cfg = in_be32(&vr->status_cfg); |
| 308 | if (status_cfg & 0x3f0000) |
| 309 | out_be32(&vr->status_cfg, status_cfg & 0x3f0000); |
| 310 | |
| 311 | if (status_cfg & DMA_ACT) { |
| 312 | do { |
| 313 | status_cfg = in_be32(&vr->status_cfg); |
| 314 | if (status_cfg & INT_DMA_END_STATUS) |
| 315 | break; |
| 316 | } while (cnt--); |
| 317 | |
| 318 | if (cnt < 0) { |
| 319 | /* timed out, issue soft reset */ |
| 320 | out_be32(&vr->status_cfg, SOFT_RST); |
| 321 | out_be32(&vr->status_cfg, 0); |
| 322 | } else { |
| 323 | /* clear DMA_END and other pending irqs */ |
| 324 | out_be32(&vr->status_cfg, status_cfg & 0x3f0000); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | dev->field = 0; |
| 329 | } |
| 330 | |
| 331 | static int restart_video_queue(struct viu_dmaqueue *vidq) |
| 332 | { |
| 333 | struct viu_buf *buf, *prev; |
| 334 | |
| 335 | dprintk(1, "%s vidq=0x%08lx\n", __func__, (unsigned long)vidq); |
| 336 | if (!list_empty(&vidq->active)) { |
| 337 | buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); |
| 338 | dprintk(2, "restart_queue [%p/%d]: restart dma\n", |
| 339 | buf, buf->vb.i); |
| 340 | |
| 341 | viu_stop_dma(vidq->dev); |
| 342 | |
| 343 | /* cancel all outstanding capture requests */ |
| 344 | list_for_each_entry_safe(buf, prev, &vidq->active, vb.queue) { |
| 345 | list_del(&buf->vb.queue); |
| 346 | buf->vb.state = VIDEOBUF_ERROR; |
| 347 | wake_up(&buf->vb.done); |
| 348 | } |
| 349 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | prev = NULL; |
| 354 | for (;;) { |
| 355 | if (list_empty(&vidq->queued)) |
| 356 | return 0; |
| 357 | buf = list_entry(vidq->queued.next, struct viu_buf, vb.queue); |
| 358 | if (prev == NULL) { |
| 359 | list_del(&buf->vb.queue); |
| 360 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 361 | |
| 362 | dprintk(1, "Restarting video dma\n"); |
| 363 | viu_stop_dma(vidq->dev); |
| 364 | viu_start_dma(vidq->dev); |
| 365 | |
| 366 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 367 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 368 | dprintk(2, "[%p/%d] restart_queue - first active\n", |
| 369 | buf, buf->vb.i); |
| 370 | |
| 371 | } else if (prev->vb.width == buf->vb.width && |
| 372 | prev->vb.height == buf->vb.height && |
| 373 | prev->fmt == buf->fmt) { |
| 374 | list_del(&buf->vb.queue); |
| 375 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 376 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 377 | dprintk(2, "[%p/%d] restart_queue - move to active\n", |
| 378 | buf, buf->vb.i); |
| 379 | } else { |
| 380 | return 0; |
| 381 | } |
| 382 | prev = buf; |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | static void viu_vid_timeout(unsigned long data) |
| 387 | { |
| 388 | struct viu_dev *dev = (struct viu_dev *)data; |
| 389 | struct viu_buf *buf; |
| 390 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 391 | |
| 392 | while (!list_empty(&vidq->active)) { |
| 393 | buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); |
| 394 | list_del(&buf->vb.queue); |
| 395 | buf->vb.state = VIDEOBUF_ERROR; |
| 396 | wake_up(&buf->vb.done); |
| 397 | dprintk(1, "viu/0: [%p/%d] timeout\n", buf, buf->vb.i); |
| 398 | } |
| 399 | |
| 400 | restart_video_queue(vidq); |
| 401 | } |
| 402 | |
| 403 | /* |
| 404 | * Videobuf operations |
| 405 | */ |
| 406 | static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, |
| 407 | unsigned int *size) |
| 408 | { |
| 409 | struct viu_fh *fh = vq->priv_data; |
| 410 | |
| 411 | *size = fh->width * fh->height * fh->fmt->depth >> 3; |
| 412 | if (*count == 0) |
| 413 | *count = 32; |
| 414 | |
| 415 | while (*size * *count > VIU_VID_MEM_LIMIT * 1024 * 1024) |
| 416 | (*count)--; |
| 417 | |
| 418 | dprintk(1, "%s, count=%d, size=%d\n", __func__, *count, *size); |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static void free_buffer(struct videobuf_queue *vq, struct viu_buf *buf) |
| 423 | { |
| 424 | struct videobuf_buffer *vb = &buf->vb; |
| 425 | void *vaddr = NULL; |
| 426 | |
| 427 | BUG_ON(in_interrupt()); |
| 428 | |
| 429 | videobuf_waiton(&buf->vb, 0, 0); |
| 430 | |
| 431 | if (vq->int_ops && vq->int_ops->vaddr) |
| 432 | vaddr = vq->int_ops->vaddr(vb); |
| 433 | |
| 434 | if (vaddr) |
| 435 | videobuf_dma_contig_free(vq, &buf->vb); |
| 436 | |
| 437 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| 438 | } |
| 439 | |
| 440 | inline int buffer_activate(struct viu_dev *dev, struct viu_buf *buf) |
| 441 | { |
| 442 | struct viu_reg *vr = dev->vr; |
| 443 | int bpp; |
| 444 | |
| 445 | /* setup the DMA base address */ |
| 446 | reg_val.field_base_addr = videobuf_to_dma_contig(&buf->vb); |
| 447 | |
| 448 | dprintk(1, "buffer_activate [%p/%d]: dma addr 0x%lx\n", |
| 449 | buf, buf->vb.i, (unsigned long)reg_val.field_base_addr); |
| 450 | |
| 451 | /* interlace is on by default, set horizontal DMA increment */ |
| 452 | reg_val.status_cfg = 0; |
| 453 | bpp = buf->fmt->depth >> 3; |
| 454 | switch (bpp) { |
| 455 | case 2: |
| 456 | reg_val.status_cfg &= ~MODE_32BIT; |
| 457 | reg_val.dma_inc = buf->vb.width * 2; |
| 458 | break; |
| 459 | case 4: |
| 460 | reg_val.status_cfg |= MODE_32BIT; |
| 461 | reg_val.dma_inc = buf->vb.width * 4; |
| 462 | break; |
| 463 | default: |
| 464 | dprintk(0, "doesn't support color depth(%d)\n", |
| 465 | bpp * 8); |
| 466 | return -EINVAL; |
| 467 | } |
| 468 | |
| 469 | /* setup picture_count register */ |
| 470 | reg_val.picture_count = (buf->vb.height / 2) << 16 | |
| 471 | buf->vb.width; |
| 472 | |
| 473 | reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; |
| 474 | |
| 475 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 476 | dev->capfield = buf->vb.field; |
| 477 | |
| 478 | /* reset dma increment if needed */ |
| 479 | if (!V4L2_FIELD_HAS_BOTH(buf->vb.field)) |
| 480 | reg_val.dma_inc = 0; |
| 481 | |
| 482 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 483 | out_be32(&vr->picture_count, reg_val.picture_count); |
| 484 | out_be32(&vr->field_base_addr, reg_val.field_base_addr); |
| 485 | mod_timer(&dev->vidq.timeout, jiffies + BUFFER_TIMEOUT); |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | static int buffer_prepare(struct videobuf_queue *vq, |
| 490 | struct videobuf_buffer *vb, |
| 491 | enum v4l2_field field) |
| 492 | { |
| 493 | struct viu_fh *fh = vq->priv_data; |
| 494 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 495 | int rc; |
| 496 | |
| 497 | BUG_ON(fh->fmt == NULL); |
| 498 | |
| 499 | if (fh->width < 48 || fh->width > norm_maxw() || |
| 500 | fh->height < 32 || fh->height > norm_maxh()) |
| 501 | return -EINVAL; |
| 502 | buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3; |
| 503 | if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) |
| 504 | return -EINVAL; |
| 505 | |
| 506 | if (buf->fmt != fh->fmt || |
| 507 | buf->vb.width != fh->width || |
| 508 | buf->vb.height != fh->height || |
| 509 | buf->vb.field != field) { |
| 510 | buf->fmt = fh->fmt; |
| 511 | buf->vb.width = fh->width; |
| 512 | buf->vb.height = fh->height; |
| 513 | buf->vb.field = field; |
| 514 | } |
| 515 | |
| 516 | if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { |
| 517 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
| 518 | if (rc != 0) |
| 519 | goto fail; |
| 520 | |
| 521 | buf->vb.width = fh->width; |
| 522 | buf->vb.height = fh->height; |
| 523 | buf->vb.field = field; |
| 524 | buf->fmt = fh->fmt; |
| 525 | } |
| 526 | |
| 527 | buf->vb.state = VIDEOBUF_PREPARED; |
| 528 | return 0; |
| 529 | |
| 530 | fail: |
| 531 | free_buffer(vq, buf); |
| 532 | return rc; |
| 533 | } |
| 534 | |
| 535 | static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| 536 | { |
| 537 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 538 | struct viu_fh *fh = vq->priv_data; |
| 539 | struct viu_dev *dev = fh->dev; |
| 540 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 541 | struct viu_buf *prev; |
| 542 | |
| 543 | if (!list_empty(&vidq->queued)) { |
| 544 | dprintk(1, "adding vb queue=0x%08lx\n", |
| 545 | (unsigned long)&buf->vb.queue); |
| 546 | dprintk(1, "vidq pointer 0x%p, queued 0x%p\n", |
| 547 | vidq, &vidq->queued); |
| 548 | dprintk(1, "dev %p, queued: self %p, next %p, head %p\n", |
| 549 | dev, &vidq->queued, vidq->queued.next, |
| 550 | vidq->queued.prev); |
| 551 | list_add_tail(&buf->vb.queue, &vidq->queued); |
| 552 | buf->vb.state = VIDEOBUF_QUEUED; |
| 553 | dprintk(2, "[%p/%d] buffer_queue - append to queued\n", |
| 554 | buf, buf->vb.i); |
| 555 | } else if (list_empty(&vidq->active)) { |
| 556 | dprintk(1, "adding vb active=0x%08lx\n", |
| 557 | (unsigned long)&buf->vb.queue); |
| 558 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 559 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 560 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 561 | dprintk(2, "[%p/%d] buffer_queue - first active\n", |
| 562 | buf, buf->vb.i); |
| 563 | |
| 564 | buffer_activate(dev, buf); |
| 565 | } else { |
| 566 | dprintk(1, "adding vb queue2=0x%08lx\n", |
| 567 | (unsigned long)&buf->vb.queue); |
| 568 | prev = list_entry(vidq->active.prev, struct viu_buf, vb.queue); |
| 569 | if (prev->vb.width == buf->vb.width && |
| 570 | prev->vb.height == buf->vb.height && |
| 571 | prev->fmt == buf->fmt) { |
| 572 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 573 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 574 | dprintk(2, "[%p/%d] buffer_queue - append to active\n", |
| 575 | buf, buf->vb.i); |
| 576 | } else { |
| 577 | list_add_tail(&buf->vb.queue, &vidq->queued); |
| 578 | buf->vb.state = VIDEOBUF_QUEUED; |
| 579 | dprintk(2, "[%p/%d] buffer_queue - first queued\n", |
| 580 | buf, buf->vb.i); |
| 581 | } |
| 582 | } |
| 583 | } |
| 584 | |
| 585 | static void buffer_release(struct videobuf_queue *vq, |
| 586 | struct videobuf_buffer *vb) |
| 587 | { |
| 588 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 589 | struct viu_fh *fh = vq->priv_data; |
| 590 | struct viu_dev *dev = (struct viu_dev *)fh->dev; |
| 591 | |
| 592 | viu_stop_dma(dev); |
| 593 | free_buffer(vq, buf); |
| 594 | } |
| 595 | |
| 596 | static struct videobuf_queue_ops viu_video_qops = { |
| 597 | .buf_setup = buffer_setup, |
| 598 | .buf_prepare = buffer_prepare, |
| 599 | .buf_queue = buffer_queue, |
| 600 | .buf_release = buffer_release, |
| 601 | }; |
| 602 | |
| 603 | /* |
| 604 | * IOCTL vidioc handling |
| 605 | */ |
| 606 | static int vidioc_querycap(struct file *file, void *priv, |
| 607 | struct v4l2_capability *cap) |
| 608 | { |
| 609 | strcpy(cap->driver, "viu"); |
| 610 | strcpy(cap->card, "viu"); |
| 611 | cap->version = VIU_VERSION; |
| 612 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
| 613 | V4L2_CAP_STREAMING | |
| 614 | V4L2_CAP_VIDEO_OVERLAY | |
| 615 | V4L2_CAP_READWRITE; |
| 616 | return 0; |
| 617 | } |
| 618 | |
| 619 | static int vidioc_enum_fmt(struct file *file, void *priv, |
| 620 | struct v4l2_fmtdesc *f) |
| 621 | { |
| 622 | int index = f->index; |
| 623 | |
| 624 | if (f->index > NUM_FORMATS) |
| 625 | return -EINVAL; |
| 626 | |
| 627 | strlcpy(f->description, formats[index].name, sizeof(f->description)); |
| 628 | f->pixelformat = formats[index].fourcc; |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | static int vidioc_g_fmt_cap(struct file *file, void *priv, |
| 633 | struct v4l2_format *f) |
| 634 | { |
| 635 | struct viu_fh *fh = priv; |
| 636 | |
| 637 | f->fmt.pix.width = fh->width; |
| 638 | f->fmt.pix.height = fh->height; |
| 639 | f->fmt.pix.field = fh->vb_vidq.field; |
| 640 | f->fmt.pix.pixelformat = fh->fmt->pixelformat; |
| 641 | f->fmt.pix.bytesperline = |
| 642 | (f->fmt.pix.width * fh->fmt->depth) >> 3; |
| 643 | f->fmt.pix.sizeimage = fh->sizeimage; |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
| 648 | struct v4l2_format *f) |
| 649 | { |
| 650 | struct viu_fmt *fmt; |
| 651 | enum v4l2_field field; |
| 652 | unsigned int maxw, maxh; |
| 653 | |
| 654 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| 655 | if (!fmt) { |
| 656 | dprintk(1, "Fourcc format (0x%08x) invalid.", |
| 657 | f->fmt.pix.pixelformat); |
| 658 | return -EINVAL; |
| 659 | } |
| 660 | |
| 661 | field = f->fmt.pix.field; |
| 662 | |
| 663 | if (field == V4L2_FIELD_ANY) { |
| 664 | field = V4L2_FIELD_INTERLACED; |
| 665 | } else if (field != V4L2_FIELD_INTERLACED) { |
| 666 | dprintk(1, "Field type invalid.\n"); |
| 667 | return -EINVAL; |
| 668 | } |
| 669 | |
| 670 | maxw = norm_maxw(); |
| 671 | maxh = norm_maxh(); |
| 672 | |
| 673 | f->fmt.pix.field = field; |
| 674 | if (f->fmt.pix.height < 32) |
| 675 | f->fmt.pix.height = 32; |
| 676 | if (f->fmt.pix.height > maxh) |
| 677 | f->fmt.pix.height = maxh; |
| 678 | if (f->fmt.pix.width < 48) |
| 679 | f->fmt.pix.width = 48; |
| 680 | if (f->fmt.pix.width > maxw) |
| 681 | f->fmt.pix.width = maxw; |
| 682 | f->fmt.pix.width &= ~0x03; |
| 683 | f->fmt.pix.bytesperline = |
| 684 | (f->fmt.pix.width * fmt->depth) >> 3; |
| 685 | |
| 686 | return 0; |
| 687 | } |
| 688 | |
| 689 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
| 690 | struct v4l2_format *f) |
| 691 | { |
| 692 | struct viu_fh *fh = priv; |
| 693 | int ret; |
| 694 | |
| 695 | ret = vidioc_try_fmt_cap(file, fh, f); |
| 696 | if (ret < 0) |
| 697 | return ret; |
| 698 | |
| 699 | fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| 700 | fh->width = f->fmt.pix.width; |
| 701 | fh->height = f->fmt.pix.height; |
| 702 | fh->sizeimage = f->fmt.pix.sizeimage; |
| 703 | fh->vb_vidq.field = f->fmt.pix.field; |
| 704 | fh->type = f->type; |
| 705 | dprintk(1, "set to pixelformat '%4.6s'\n", (char *)&fh->fmt->name); |
| 706 | return 0; |
| 707 | } |
| 708 | |
| 709 | static int vidioc_g_fmt_overlay(struct file *file, void *priv, |
| 710 | struct v4l2_format *f) |
| 711 | { |
| 712 | struct viu_fh *fh = priv; |
| 713 | |
| 714 | f->fmt.win = fh->win; |
| 715 | return 0; |
| 716 | } |
| 717 | |
| 718 | static int verify_preview(struct viu_dev *dev, struct v4l2_window *win) |
| 719 | { |
| 720 | enum v4l2_field field; |
| 721 | int maxw, maxh; |
| 722 | |
| 723 | if (dev->ovbuf.base == NULL) |
| 724 | return -EINVAL; |
| 725 | if (dev->ovfmt == NULL) |
| 726 | return -EINVAL; |
| 727 | if (win->w.width < 48 || win->w.height < 32) |
| 728 | return -EINVAL; |
| 729 | |
| 730 | field = win->field; |
| 731 | maxw = dev->crop_current.width; |
| 732 | maxh = dev->crop_current.height; |
| 733 | |
| 734 | if (field == V4L2_FIELD_ANY) { |
| 735 | field = (win->w.height > maxh/2) |
| 736 | ? V4L2_FIELD_INTERLACED |
| 737 | : V4L2_FIELD_TOP; |
| 738 | } |
| 739 | switch (field) { |
| 740 | case V4L2_FIELD_TOP: |
| 741 | case V4L2_FIELD_BOTTOM: |
| 742 | maxh = maxh / 2; |
| 743 | break; |
| 744 | case V4L2_FIELD_INTERLACED: |
| 745 | break; |
| 746 | default: |
| 747 | return -EINVAL; |
| 748 | } |
| 749 | |
| 750 | win->field = field; |
| 751 | if (win->w.width > maxw) |
| 752 | win->w.width = maxw; |
| 753 | if (win->w.height > maxh) |
| 754 | win->w.height = maxh; |
| 755 | return 0; |
| 756 | } |
| 757 | |
| 758 | inline void viu_activate_overlay(struct viu_reg *viu_reg) |
| 759 | { |
| 760 | struct viu_reg *vr = viu_reg; |
| 761 | |
| 762 | out_be32(&vr->field_base_addr, reg_val.field_base_addr); |
| 763 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 764 | out_be32(&vr->picture_count, reg_val.picture_count); |
| 765 | } |
| 766 | |
| 767 | static int viu_start_preview(struct viu_dev *dev, struct viu_fh *fh) |
| 768 | { |
| 769 | int bpp; |
| 770 | |
| 771 | dprintk(1, "%s %dx%d %s\n", __func__, |
| 772 | fh->win.w.width, fh->win.w.height, dev->ovfmt->name); |
| 773 | |
| 774 | reg_val.status_cfg = 0; |
| 775 | |
| 776 | /* setup window */ |
| 777 | reg_val.picture_count = (fh->win.w.height / 2) << 16 | |
| 778 | fh->win.w.width; |
| 779 | |
| 780 | /* setup color depth and dma increment */ |
| 781 | bpp = dev->ovfmt->depth / 8; |
| 782 | switch (bpp) { |
| 783 | case 2: |
| 784 | reg_val.status_cfg &= ~MODE_32BIT; |
| 785 | reg_val.dma_inc = fh->win.w.width * 2; |
| 786 | break; |
| 787 | case 4: |
| 788 | reg_val.status_cfg |= MODE_32BIT; |
| 789 | reg_val.dma_inc = fh->win.w.width * 4; |
| 790 | break; |
| 791 | default: |
| 792 | dprintk(0, "device doesn't support color depth(%d)\n", |
| 793 | bpp * 8); |
| 794 | return -EINVAL; |
| 795 | } |
| 796 | |
| 797 | dev->ovfield = fh->win.field; |
| 798 | if (!V4L2_FIELD_HAS_BOTH(dev->ovfield)) |
| 799 | reg_val.dma_inc = 0; |
| 800 | |
| 801 | reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; |
| 802 | |
| 803 | /* setup the base address of the overlay buffer */ |
| 804 | reg_val.field_base_addr = (u32)dev->ovbuf.base; |
| 805 | |
| 806 | dev->ovenable = 1; |
| 807 | viu_activate_overlay(dev->vr); |
| 808 | |
| 809 | /* start dma */ |
| 810 | viu_start_dma(dev); |
| 811 | return 0; |
| 812 | } |
| 813 | |
| 814 | static int vidioc_s_fmt_overlay(struct file *file, void *priv, |
| 815 | struct v4l2_format *f) |
| 816 | { |
| 817 | struct viu_fh *fh = priv; |
| 818 | struct viu_dev *dev = (struct viu_dev *)fh->dev; |
| 819 | unsigned long flags; |
| 820 | int err; |
| 821 | |
| 822 | err = verify_preview(dev, &f->fmt.win); |
| 823 | if (err) |
| 824 | return err; |
| 825 | |
| 826 | mutex_lock(&dev->lock); |
| 827 | fh->win = f->fmt.win; |
| 828 | |
| 829 | spin_lock_irqsave(&dev->slock, flags); |
| 830 | viu_start_preview(dev, fh); |
| 831 | spin_unlock_irqrestore(&dev->slock, flags); |
| 832 | mutex_unlock(&dev->lock); |
| 833 | return 0; |
| 834 | } |
| 835 | |
| 836 | static int vidioc_try_fmt_overlay(struct file *file, void *priv, |
| 837 | struct v4l2_format *f) |
| 838 | { |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg) |
| 843 | { |
| 844 | struct viu_fh *fh = priv; |
| 845 | struct viu_dev *dev = fh->dev; |
| 846 | struct v4l2_framebuffer *fb = arg; |
| 847 | |
| 848 | *fb = dev->ovbuf; |
| 849 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; |
| 850 | return 0; |
| 851 | } |
| 852 | |
| 853 | int vidioc_s_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg) |
| 854 | { |
| 855 | struct viu_fh *fh = priv; |
| 856 | struct viu_dev *dev = fh->dev; |
| 857 | struct v4l2_framebuffer *fb = arg; |
| 858 | struct viu_fmt *fmt; |
| 859 | |
| 860 | if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) |
| 861 | return -EPERM; |
| 862 | |
| 863 | /* check args */ |
| 864 | fmt = format_by_fourcc(fb->fmt.pixelformat); |
| 865 | if (fmt == NULL) |
| 866 | return -EINVAL; |
| 867 | |
| 868 | /* ok, accept it */ |
| 869 | dev->ovbuf = *fb; |
| 870 | dev->ovfmt = fmt; |
| 871 | if (dev->ovbuf.fmt.bytesperline == 0) { |
| 872 | dev->ovbuf.fmt.bytesperline = |
| 873 | dev->ovbuf.fmt.width * fmt->depth / 8; |
| 874 | } |
| 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | static int vidioc_reqbufs(struct file *file, void *priv, |
| 879 | struct v4l2_requestbuffers *p) |
| 880 | { |
| 881 | struct viu_fh *fh = priv; |
| 882 | |
| 883 | return videobuf_reqbufs(&fh->vb_vidq, p); |
| 884 | } |
| 885 | |
| 886 | static int vidioc_querybuf(struct file *file, void *priv, |
| 887 | struct v4l2_buffer *p) |
| 888 | { |
| 889 | struct viu_fh *fh = priv; |
| 890 | |
| 891 | return videobuf_querybuf(&fh->vb_vidq, p); |
| 892 | } |
| 893 | |
| 894 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
| 895 | { |
| 896 | struct viu_fh *fh = priv; |
| 897 | |
| 898 | return videobuf_qbuf(&fh->vb_vidq, p); |
| 899 | } |
| 900 | |
| 901 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
| 902 | { |
| 903 | struct viu_fh *fh = priv; |
| 904 | |
| 905 | return videobuf_dqbuf(&fh->vb_vidq, p, |
| 906 | file->f_flags & O_NONBLOCK); |
| 907 | } |
| 908 | |
| 909 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
| 910 | { |
| 911 | struct viu_fh *fh = priv; |
| 912 | |
| 913 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 914 | return -EINVAL; |
| 915 | if (fh->type != i) |
| 916 | return -EINVAL; |
| 917 | |
| 918 | return videobuf_streamon(&fh->vb_vidq); |
| 919 | } |
| 920 | |
| 921 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
| 922 | { |
| 923 | struct viu_fh *fh = priv; |
| 924 | |
| 925 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 926 | return -EINVAL; |
| 927 | if (fh->type != i) |
| 928 | return -EINVAL; |
| 929 | |
| 930 | return videobuf_streamoff(&fh->vb_vidq); |
| 931 | } |
| 932 | |
| 933 | #define decoder_call(viu, o, f, args...) \ |
| 934 | v4l2_subdev_call(viu->decoder, o, f, ##args) |
| 935 | |
| 936 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *id) |
| 937 | { |
| 938 | struct viu_fh *fh = priv; |
| 939 | |
| 940 | decoder_call(fh->dev, core, s_std, *id); |
| 941 | return 0; |
| 942 | } |
| 943 | |
| 944 | /* only one input in this driver */ |
| 945 | static int vidioc_enum_input(struct file *file, void *priv, |
| 946 | struct v4l2_input *inp) |
| 947 | { |
| 948 | struct viu_fh *fh = priv; |
| 949 | |
| 950 | if (inp->index != 0) |
| 951 | return -EINVAL; |
| 952 | |
| 953 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
| 954 | inp->std = fh->dev->vdev->tvnorms; |
| 955 | strcpy(inp->name, "Camera"); |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
| 960 | { |
| 961 | *i = 0; |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
| 966 | { |
| 967 | struct viu_fh *fh = priv; |
| 968 | |
| 969 | if (i > 1) |
| 970 | return -EINVAL; |
| 971 | |
| 972 | decoder_call(fh->dev, video, s_routing, i, 0, 0); |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | /* Controls */ |
| 977 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 978 | struct v4l2_queryctrl *qc) |
| 979 | { |
| 980 | int i; |
| 981 | |
| 982 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 983 | if (qc->id && qc->id == viu_qctrl[i].id) { |
| 984 | memcpy(qc, &(viu_qctrl[i]), sizeof(*qc)); |
| 985 | return 0; |
| 986 | } |
| 987 | } |
| 988 | return -EINVAL; |
| 989 | } |
| 990 | |
| 991 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 992 | struct v4l2_control *ctrl) |
| 993 | { |
| 994 | int i; |
| 995 | |
| 996 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 997 | if (ctrl->id == viu_qctrl[i].id) { |
| 998 | ctrl->value = qctl_regs[i]; |
| 999 | return 0; |
| 1000 | } |
| 1001 | } |
| 1002 | return -EINVAL; |
| 1003 | } |
| 1004 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 1005 | struct v4l2_control *ctrl) |
| 1006 | { |
| 1007 | int i; |
| 1008 | |
| 1009 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 1010 | if (ctrl->id == viu_qctrl[i].id) { |
| 1011 | if (ctrl->value < viu_qctrl[i].minimum |
| 1012 | || ctrl->value > viu_qctrl[i].maximum) |
| 1013 | return -ERANGE; |
| 1014 | qctl_regs[i] = ctrl->value; |
| 1015 | return 0; |
| 1016 | } |
| 1017 | } |
| 1018 | return -EINVAL; |
| 1019 | } |
| 1020 | |
| 1021 | inline void viu_activate_next_buf(struct viu_dev *dev, |
| 1022 | struct viu_dmaqueue *viuq) |
| 1023 | { |
| 1024 | struct viu_dmaqueue *vidq = viuq; |
| 1025 | struct viu_buf *buf; |
| 1026 | |
| 1027 | /* launch another DMA operation for an active/queued buffer */ |
| 1028 | if (!list_empty(&vidq->active)) { |
| 1029 | buf = list_entry(vidq->active.next, struct viu_buf, |
| 1030 | vb.queue); |
| 1031 | dprintk(1, "start another queued buffer: 0x%p\n", buf); |
| 1032 | buffer_activate(dev, buf); |
| 1033 | } else if (!list_empty(&vidq->queued)) { |
| 1034 | buf = list_entry(vidq->queued.next, struct viu_buf, |
| 1035 | vb.queue); |
| 1036 | list_del(&buf->vb.queue); |
| 1037 | |
| 1038 | dprintk(1, "start another queued buffer: 0x%p\n", buf); |
| 1039 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 1040 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 1041 | buffer_activate(dev, buf); |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | inline void viu_default_settings(struct viu_reg *viu_reg) |
| 1046 | { |
| 1047 | struct viu_reg *vr = viu_reg; |
| 1048 | |
| 1049 | out_be32(&vr->luminance, 0x9512A254); |
| 1050 | out_be32(&vr->chroma_r, 0x03310000); |
| 1051 | out_be32(&vr->chroma_g, 0x06600F38); |
| 1052 | out_be32(&vr->chroma_b, 0x00000409); |
| 1053 | out_be32(&vr->alpha, 0x000000ff); |
| 1054 | out_be32(&vr->req_alarm, 0x00000090); |
| 1055 | dprintk(1, "status reg: 0x%08x, field base: 0x%08x\n", |
| 1056 | in_be32(&vr->status_cfg), in_be32(&vr->field_base_addr)); |
| 1057 | } |
| 1058 | |
| 1059 | static void viu_overlay_intr(struct viu_dev *dev, u32 status) |
| 1060 | { |
| 1061 | struct viu_reg *vr = dev->vr; |
| 1062 | |
| 1063 | if (status & INT_DMA_END_STATUS) |
| 1064 | dev->dma_done = 1; |
| 1065 | |
| 1066 | if (status & INT_FIELD_STATUS) { |
| 1067 | if (dev->dma_done) { |
| 1068 | u32 addr = reg_val.field_base_addr; |
| 1069 | |
| 1070 | dev->dma_done = 0; |
| 1071 | if (status & FIELD_NO) |
| 1072 | addr += reg_val.dma_inc; |
| 1073 | |
| 1074 | out_be32(&vr->field_base_addr, addr); |
| 1075 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 1076 | out_be32(&vr->status_cfg, |
| 1077 | (status & 0xffc0ffff) | |
| 1078 | (status & INT_ALL_STATUS) | |
| 1079 | reg_val.status_cfg); |
| 1080 | } else if (status & INT_VSYNC_STATUS) { |
| 1081 | out_be32(&vr->status_cfg, |
| 1082 | (status & 0xffc0ffff) | |
| 1083 | (status & INT_ALL_STATUS) | |
| 1084 | reg_val.status_cfg); |
| 1085 | } |
| 1086 | } |
| 1087 | } |
| 1088 | |
| 1089 | static void viu_capture_intr(struct viu_dev *dev, u32 status) |
| 1090 | { |
| 1091 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 1092 | struct viu_reg *vr = dev->vr; |
| 1093 | struct viu_buf *buf; |
| 1094 | int field_num; |
| 1095 | int need_two; |
| 1096 | int dma_done = 0; |
| 1097 | |
| 1098 | field_num = status & FIELD_NO; |
| 1099 | need_two = V4L2_FIELD_HAS_BOTH(dev->capfield); |
| 1100 | |
| 1101 | if (status & INT_DMA_END_STATUS) { |
| 1102 | dma_done = 1; |
| 1103 | if (((field_num == 0) && (dev->field == 0)) || |
| 1104 | (field_num && (dev->field == 1))) |
| 1105 | dev->field++; |
| 1106 | } |
| 1107 | |
| 1108 | if (status & INT_FIELD_STATUS) { |
| 1109 | dprintk(1, "irq: field %d, done %d\n", |
| 1110 | !!field_num, dma_done); |
| 1111 | if (unlikely(dev->first)) { |
| 1112 | if (field_num == 0) { |
| 1113 | dev->first = 0; |
| 1114 | dprintk(1, "activate first buf\n"); |
| 1115 | viu_activate_next_buf(dev, vidq); |
| 1116 | } else |
| 1117 | dprintk(1, "wait field 0\n"); |
| 1118 | return; |
| 1119 | } |
| 1120 | |
| 1121 | /* setup buffer address for next dma operation */ |
| 1122 | if (!list_empty(&vidq->active)) { |
| 1123 | u32 addr = reg_val.field_base_addr; |
| 1124 | |
| 1125 | if (field_num && need_two) { |
| 1126 | addr += reg_val.dma_inc; |
| 1127 | dprintk(1, "field 1, 0x%lx, dev field %d\n", |
| 1128 | (unsigned long)addr, dev->field); |
| 1129 | } |
| 1130 | out_be32(&vr->field_base_addr, addr); |
| 1131 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 1132 | out_be32(&vr->status_cfg, |
| 1133 | (status & 0xffc0ffff) | |
| 1134 | (status & INT_ALL_STATUS) | |
| 1135 | reg_val.status_cfg); |
| 1136 | return; |
| 1137 | } |
| 1138 | } |
| 1139 | |
| 1140 | if (dma_done && field_num && (dev->field == 2)) { |
| 1141 | dev->field = 0; |
| 1142 | buf = list_entry(vidq->active.next, |
| 1143 | struct viu_buf, vb.queue); |
| 1144 | dprintk(1, "viu/0: [%p/%d] 0x%lx/0x%lx: dma complete\n", |
| 1145 | buf, buf->vb.i, |
| 1146 | (unsigned long)videobuf_to_dma_contig(&buf->vb), |
| 1147 | (unsigned long)in_be32(&vr->field_base_addr)); |
| 1148 | |
| 1149 | if (waitqueue_active(&buf->vb.done)) { |
| 1150 | list_del(&buf->vb.queue); |
| 1151 | do_gettimeofday(&buf->vb.ts); |
| 1152 | buf->vb.state = VIDEOBUF_DONE; |
| 1153 | buf->vb.field_count++; |
| 1154 | wake_up(&buf->vb.done); |
| 1155 | } |
| 1156 | /* activate next dma buffer */ |
| 1157 | viu_activate_next_buf(dev, vidq); |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | static irqreturn_t viu_intr(int irq, void *dev_id) |
| 1162 | { |
| 1163 | struct viu_dev *dev = (struct viu_dev *)dev_id; |
| 1164 | struct viu_reg *vr = dev->vr; |
| 1165 | u32 status; |
| 1166 | u32 error; |
| 1167 | |
| 1168 | status = in_be32(&vr->status_cfg); |
| 1169 | |
| 1170 | if (status & INT_ERROR_STATUS) { |
| 1171 | dev->irqs.error_irq++; |
| 1172 | error = status & ERR_MASK; |
| 1173 | if (error) |
| 1174 | dprintk(1, "Err: error(%d), times:%d!\n", |
| 1175 | error >> 4, dev->irqs.error_irq); |
| 1176 | /* Clear interrupt error bit and error flags */ |
| 1177 | out_be32(&vr->status_cfg, |
| 1178 | (status & 0xffc0ffff) | INT_ERROR_STATUS); |
| 1179 | } |
| 1180 | |
| 1181 | if (status & INT_DMA_END_STATUS) { |
| 1182 | dev->irqs.dma_end_irq++; |
| 1183 | dev->dma_done = 1; |
| 1184 | dprintk(2, "VIU DMA end interrupt times: %d\n", |
| 1185 | dev->irqs.dma_end_irq); |
| 1186 | } |
| 1187 | |
| 1188 | if (status & INT_HSYNC_STATUS) |
| 1189 | dev->irqs.hsync_irq++; |
| 1190 | |
| 1191 | if (status & INT_FIELD_STATUS) { |
| 1192 | dev->irqs.field_irq++; |
| 1193 | dprintk(2, "VIU field interrupt times: %d\n", |
| 1194 | dev->irqs.field_irq); |
| 1195 | } |
| 1196 | |
| 1197 | if (status & INT_VSTART_STATUS) |
| 1198 | dev->irqs.vstart_irq++; |
| 1199 | |
| 1200 | if (status & INT_VSYNC_STATUS) { |
| 1201 | dev->irqs.vsync_irq++; |
| 1202 | dprintk(2, "VIU vsync interrupt times: %d\n", |
| 1203 | dev->irqs.vsync_irq); |
| 1204 | } |
| 1205 | |
| 1206 | /* clear all pending irqs */ |
| 1207 | status = in_be32(&vr->status_cfg); |
| 1208 | out_be32(&vr->status_cfg, |
| 1209 | (status & 0xffc0ffff) | (status & INT_ALL_STATUS)); |
| 1210 | |
| 1211 | if (dev->ovenable) { |
| 1212 | viu_overlay_intr(dev, status); |
| 1213 | return IRQ_HANDLED; |
| 1214 | } |
| 1215 | |
| 1216 | /* Capture mode */ |
| 1217 | viu_capture_intr(dev, status); |
| 1218 | return IRQ_HANDLED; |
| 1219 | } |
| 1220 | |
| 1221 | /* |
| 1222 | * File operations for the device |
| 1223 | */ |
| 1224 | static int viu_open(struct file *file) |
| 1225 | { |
| 1226 | struct video_device *vdev = video_devdata(file); |
| 1227 | struct viu_dev *dev = video_get_drvdata(vdev); |
| 1228 | struct viu_fh *fh; |
| 1229 | struct viu_reg *vr; |
| 1230 | int minor = vdev->minor; |
| 1231 | u32 status_cfg; |
| 1232 | int i; |
| 1233 | |
| 1234 | dprintk(1, "viu: open (minor=%d)\n", minor); |
| 1235 | |
| 1236 | dev->users++; |
| 1237 | if (dev->users > 1) { |
| 1238 | dev->users--; |
| 1239 | return -EBUSY; |
| 1240 | } |
| 1241 | |
| 1242 | vr = dev->vr; |
| 1243 | |
| 1244 | dprintk(1, "open minor=%d type=%s users=%d\n", minor, |
| 1245 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
| 1246 | |
| 1247 | /* allocate and initialize per filehandle data */ |
| 1248 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
| 1249 | if (!fh) { |
| 1250 | dev->users--; |
| 1251 | return -ENOMEM; |
| 1252 | } |
| 1253 | |
| 1254 | file->private_data = fh; |
| 1255 | fh->dev = dev; |
| 1256 | |
| 1257 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1258 | fh->fmt = format_by_fourcc(V4L2_PIX_FMT_RGB32); |
| 1259 | fh->width = norm_maxw(); |
| 1260 | fh->height = norm_maxh(); |
| 1261 | dev->crop_current.width = fh->width; |
| 1262 | dev->crop_current.height = fh->height; |
| 1263 | |
| 1264 | /* Put all controls at a sane state */ |
| 1265 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) |
| 1266 | qctl_regs[i] = viu_qctrl[i].default_value; |
| 1267 | |
| 1268 | dprintk(1, "Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", |
| 1269 | (unsigned long)fh, (unsigned long)dev, |
| 1270 | (unsigned long)&dev->vidq); |
| 1271 | dprintk(1, "Open: list_empty queued=%d\n", |
| 1272 | list_empty(&dev->vidq.queued)); |
| 1273 | dprintk(1, "Open: list_empty active=%d\n", |
| 1274 | list_empty(&dev->vidq.active)); |
| 1275 | |
| 1276 | viu_default_settings(vr); |
| 1277 | |
| 1278 | status_cfg = in_be32(&vr->status_cfg); |
| 1279 | out_be32(&vr->status_cfg, |
| 1280 | status_cfg & ~(INT_VSYNC_EN | INT_HSYNC_EN | |
| 1281 | INT_FIELD_EN | INT_VSTART_EN | |
| 1282 | INT_DMA_END_EN | INT_ERROR_EN | INT_ECC_EN)); |
| 1283 | |
| 1284 | status_cfg = in_be32(&vr->status_cfg); |
| 1285 | out_be32(&vr->status_cfg, status_cfg | INT_ALL_STATUS); |
| 1286 | |
| 1287 | spin_lock_init(&fh->vbq_lock); |
| 1288 | videobuf_queue_dma_contig_init(&fh->vb_vidq, &viu_video_qops, |
| 1289 | dev->dev, &fh->vbq_lock, |
| 1290 | fh->type, V4L2_FIELD_INTERLACED, |
| 1291 | sizeof(struct viu_buf), fh); |
| 1292 | return 0; |
| 1293 | } |
| 1294 | |
| 1295 | static ssize_t viu_read(struct file *file, char __user *data, size_t count, |
| 1296 | loff_t *ppos) |
| 1297 | { |
| 1298 | struct viu_fh *fh = file->private_data; |
| 1299 | struct viu_dev *dev = fh->dev; |
| 1300 | int ret = 0; |
| 1301 | |
| 1302 | dprintk(2, "%s\n", __func__); |
| 1303 | if (dev->ovenable) |
| 1304 | dev->ovenable = 0; |
| 1305 | |
| 1306 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
| 1307 | viu_start_dma(dev); |
| 1308 | ret = videobuf_read_stream(&fh->vb_vidq, data, count, |
| 1309 | ppos, 0, file->f_flags & O_NONBLOCK); |
| 1310 | return ret; |
| 1311 | } |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | static unsigned int viu_poll(struct file *file, struct poll_table_struct *wait) |
| 1316 | { |
| 1317 | struct viu_fh *fh = file->private_data; |
| 1318 | struct videobuf_queue *q = &fh->vb_vidq; |
| 1319 | |
| 1320 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) |
| 1321 | return POLLERR; |
| 1322 | |
| 1323 | return videobuf_poll_stream(file, q, wait); |
| 1324 | } |
| 1325 | |
| 1326 | static int viu_release(struct file *file) |
| 1327 | { |
| 1328 | struct viu_fh *fh = file->private_data; |
| 1329 | struct viu_dev *dev = fh->dev; |
| 1330 | int minor = video_devdata(file)->minor; |
| 1331 | |
| 1332 | viu_stop_dma(dev); |
| 1333 | videobuf_stop(&fh->vb_vidq); |
| 1334 | |
| 1335 | kfree(fh); |
| 1336 | |
| 1337 | dev->users--; |
| 1338 | dprintk(1, "close (minor=%d, users=%d)\n", |
| 1339 | minor, dev->users); |
| 1340 | return 0; |
| 1341 | } |
| 1342 | |
| 1343 | void viu_reset(struct viu_reg *reg) |
| 1344 | { |
| 1345 | out_be32(®->status_cfg, 0); |
| 1346 | out_be32(®->luminance, 0x9512a254); |
| 1347 | out_be32(®->chroma_r, 0x03310000); |
| 1348 | out_be32(®->chroma_g, 0x06600f38); |
| 1349 | out_be32(®->chroma_b, 0x00000409); |
| 1350 | out_be32(®->field_base_addr, 0); |
| 1351 | out_be32(®->dma_inc, 0); |
| 1352 | out_be32(®->picture_count, 0x01e002d0); |
| 1353 | out_be32(®->req_alarm, 0x00000090); |
| 1354 | out_be32(®->alpha, 0x000000ff); |
| 1355 | } |
| 1356 | |
| 1357 | static int viu_mmap(struct file *file, struct vm_area_struct *vma) |
| 1358 | { |
| 1359 | struct viu_fh *fh = file->private_data; |
| 1360 | int ret; |
| 1361 | |
| 1362 | dprintk(1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
| 1363 | |
| 1364 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
| 1365 | |
| 1366 | dprintk(1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
| 1367 | (unsigned long)vma->vm_start, |
| 1368 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, |
| 1369 | ret); |
| 1370 | |
| 1371 | return ret; |
| 1372 | } |
| 1373 | |
| 1374 | static struct v4l2_file_operations viu_fops = { |
| 1375 | .owner = THIS_MODULE, |
| 1376 | .open = viu_open, |
| 1377 | .release = viu_release, |
| 1378 | .read = viu_read, |
| 1379 | .poll = viu_poll, |
| 1380 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
| 1381 | .mmap = viu_mmap, |
| 1382 | }; |
| 1383 | |
| 1384 | static const struct v4l2_ioctl_ops viu_ioctl_ops = { |
| 1385 | .vidioc_querycap = vidioc_querycap, |
| 1386 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, |
| 1387 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_cap, |
| 1388 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap, |
| 1389 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap, |
| 1390 | .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt, |
| 1391 | .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_overlay, |
| 1392 | .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_overlay, |
| 1393 | .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_overlay, |
| 1394 | .vidioc_g_fbuf = vidioc_g_fbuf, |
| 1395 | .vidioc_s_fbuf = vidioc_s_fbuf, |
| 1396 | .vidioc_reqbufs = vidioc_reqbufs, |
| 1397 | .vidioc_querybuf = vidioc_querybuf, |
| 1398 | .vidioc_qbuf = vidioc_qbuf, |
| 1399 | .vidioc_dqbuf = vidioc_dqbuf, |
| 1400 | .vidioc_s_std = vidioc_s_std, |
| 1401 | .vidioc_enum_input = vidioc_enum_input, |
| 1402 | .vidioc_g_input = vidioc_g_input, |
| 1403 | .vidioc_s_input = vidioc_s_input, |
| 1404 | .vidioc_queryctrl = vidioc_queryctrl, |
| 1405 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 1406 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 1407 | .vidioc_streamon = vidioc_streamon, |
| 1408 | .vidioc_streamoff = vidioc_streamoff, |
| 1409 | }; |
| 1410 | |
| 1411 | static struct video_device viu_template = { |
| 1412 | .name = "FSL viu", |
| 1413 | .fops = &viu_fops, |
| 1414 | .minor = -1, |
| 1415 | .ioctl_ops = &viu_ioctl_ops, |
| 1416 | .release = video_device_release, |
| 1417 | |
| 1418 | .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL, |
| 1419 | .current_norm = V4L2_STD_NTSC_M, |
| 1420 | }; |
| 1421 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1422 | static int __devinit viu_of_probe(struct platform_device *op, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1423 | const struct of_device_id *match) |
| 1424 | { |
| 1425 | struct viu_dev *viu_dev; |
| 1426 | struct video_device *vdev; |
| 1427 | struct resource r; |
| 1428 | struct viu_reg __iomem *viu_regs; |
| 1429 | struct i2c_adapter *ad; |
| 1430 | int ret, viu_irq; |
| 1431 | |
| 1432 | ret = of_address_to_resource(op->dev.of_node, 0, &r); |
| 1433 | if (ret) { |
| 1434 | dev_err(&op->dev, "Can't parse device node resource\n"); |
| 1435 | return -ENODEV; |
| 1436 | } |
| 1437 | |
| 1438 | viu_irq = irq_of_parse_and_map(op->dev.of_node, 0); |
| 1439 | if (viu_irq == NO_IRQ) { |
| 1440 | dev_err(&op->dev, "Error while mapping the irq\n"); |
| 1441 | return -EINVAL; |
| 1442 | } |
| 1443 | |
| 1444 | /* request mem region */ |
| 1445 | if (!devm_request_mem_region(&op->dev, r.start, |
| 1446 | sizeof(struct viu_reg), DRV_NAME)) { |
| 1447 | dev_err(&op->dev, "Error while requesting mem region\n"); |
| 1448 | ret = -EBUSY; |
| 1449 | goto err; |
| 1450 | } |
| 1451 | |
| 1452 | /* remap registers */ |
| 1453 | viu_regs = devm_ioremap(&op->dev, r.start, sizeof(struct viu_reg)); |
| 1454 | if (!viu_regs) { |
| 1455 | dev_err(&op->dev, "Can't map register set\n"); |
| 1456 | ret = -ENOMEM; |
| 1457 | goto err; |
| 1458 | } |
| 1459 | |
| 1460 | /* Prepare our private structure */ |
| 1461 | viu_dev = devm_kzalloc(&op->dev, sizeof(struct viu_dev), GFP_ATOMIC); |
| 1462 | if (!viu_dev) { |
| 1463 | dev_err(&op->dev, "Can't allocate private structure\n"); |
| 1464 | ret = -ENOMEM; |
| 1465 | goto err; |
| 1466 | } |
| 1467 | |
| 1468 | viu_dev->vr = viu_regs; |
| 1469 | viu_dev->irq = viu_irq; |
| 1470 | viu_dev->dev = &op->dev; |
| 1471 | |
| 1472 | /* init video dma queues */ |
| 1473 | INIT_LIST_HEAD(&viu_dev->vidq.active); |
| 1474 | INIT_LIST_HEAD(&viu_dev->vidq.queued); |
| 1475 | |
| 1476 | /* initialize locks */ |
| 1477 | mutex_init(&viu_dev->lock); |
| 1478 | |
| 1479 | snprintf(viu_dev->v4l2_dev.name, |
| 1480 | sizeof(viu_dev->v4l2_dev.name), "%s", "VIU"); |
| 1481 | ret = v4l2_device_register(viu_dev->dev, &viu_dev->v4l2_dev); |
| 1482 | if (ret < 0) { |
| 1483 | dev_err(&op->dev, "v4l2_device_register() failed: %d\n", ret); |
| 1484 | goto err; |
| 1485 | } |
| 1486 | |
| 1487 | ad = i2c_get_adapter(0); |
| 1488 | viu_dev->decoder = v4l2_i2c_new_subdev(&viu_dev->v4l2_dev, ad, |
| 1489 | "saa7115", "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); |
| 1490 | |
| 1491 | viu_dev->vidq.timeout.function = viu_vid_timeout; |
| 1492 | viu_dev->vidq.timeout.data = (unsigned long)viu_dev; |
| 1493 | init_timer(&viu_dev->vidq.timeout); |
| 1494 | viu_dev->first = 1; |
| 1495 | |
| 1496 | /* Allocate memory for video device */ |
| 1497 | vdev = video_device_alloc(); |
| 1498 | if (vdev == NULL) { |
| 1499 | ret = -ENOMEM; |
| 1500 | goto err_vdev; |
| 1501 | } |
| 1502 | |
| 1503 | memcpy(vdev, &viu_template, sizeof(viu_template)); |
| 1504 | |
| 1505 | vdev->v4l2_dev = &viu_dev->v4l2_dev; |
| 1506 | |
| 1507 | viu_dev->vdev = vdev; |
| 1508 | |
| 1509 | video_set_drvdata(viu_dev->vdev, viu_dev); |
| 1510 | |
| 1511 | ret = video_register_device(viu_dev->vdev, VFL_TYPE_GRABBER, -1); |
| 1512 | if (ret < 0) { |
| 1513 | video_device_release(viu_dev->vdev); |
| 1514 | goto err_vdev; |
| 1515 | } |
| 1516 | |
| 1517 | /* enable VIU clock */ |
| 1518 | viu_dev->clk = clk_get(&op->dev, "viu_clk"); |
| 1519 | if (IS_ERR(viu_dev->clk)) { |
| 1520 | dev_err(&op->dev, "failed to find the clock module!\n"); |
| 1521 | ret = -ENODEV; |
| 1522 | goto err_clk; |
| 1523 | } else { |
| 1524 | clk_enable(viu_dev->clk); |
| 1525 | } |
| 1526 | |
| 1527 | /* reset VIU module */ |
| 1528 | viu_reset(viu_dev->vr); |
| 1529 | |
| 1530 | /* install interrupt handler */ |
| 1531 | if (request_irq(viu_dev->irq, viu_intr, 0, "viu", (void *)viu_dev)) { |
| 1532 | dev_err(&op->dev, "Request VIU IRQ failed.\n"); |
| 1533 | ret = -ENODEV; |
| 1534 | goto err_irq; |
| 1535 | } |
| 1536 | |
| 1537 | dev_info(&op->dev, "Freescale VIU Video Capture Board\n"); |
| 1538 | return ret; |
| 1539 | |
| 1540 | err_irq: |
| 1541 | clk_disable(viu_dev->clk); |
| 1542 | clk_put(viu_dev->clk); |
| 1543 | err_clk: |
| 1544 | video_unregister_device(viu_dev->vdev); |
| 1545 | err_vdev: |
| 1546 | i2c_put_adapter(ad); |
| 1547 | v4l2_device_unregister(&viu_dev->v4l2_dev); |
| 1548 | err: |
| 1549 | irq_dispose_mapping(viu_irq); |
| 1550 | return ret; |
| 1551 | } |
| 1552 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1553 | static int __devexit viu_of_remove(struct platform_device *op) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1554 | { |
| 1555 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1556 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1557 | struct v4l2_subdev *sdev = list_entry(v4l2_dev->subdevs.next, |
| 1558 | struct v4l2_subdev, list); |
| 1559 | struct i2c_client *client = v4l2_get_subdevdata(sdev); |
| 1560 | |
| 1561 | free_irq(dev->irq, (void *)dev); |
| 1562 | irq_dispose_mapping(dev->irq); |
| 1563 | |
| 1564 | clk_disable(dev->clk); |
| 1565 | clk_put(dev->clk); |
| 1566 | |
| 1567 | video_unregister_device(dev->vdev); |
| 1568 | i2c_put_adapter(client->adapter); |
| 1569 | v4l2_device_unregister(&dev->v4l2_dev); |
| 1570 | return 0; |
| 1571 | } |
| 1572 | |
| 1573 | #ifdef CONFIG_PM |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1574 | static int viu_suspend(struct platform_device *op, pm_message_t state) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1575 | { |
| 1576 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1577 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1578 | |
| 1579 | clk_disable(dev->clk); |
| 1580 | return 0; |
| 1581 | } |
| 1582 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1583 | static int viu_resume(struct platform_device *op) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1584 | { |
| 1585 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1586 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1587 | |
| 1588 | clk_enable(dev->clk); |
| 1589 | return 0; |
| 1590 | } |
| 1591 | #endif |
| 1592 | |
| 1593 | /* |
| 1594 | * Initialization and module stuff |
| 1595 | */ |
| 1596 | static struct of_device_id mpc512x_viu_of_match[] = { |
| 1597 | { |
| 1598 | .compatible = "fsl,mpc5121-viu", |
| 1599 | }, |
| 1600 | {}, |
| 1601 | }; |
| 1602 | MODULE_DEVICE_TABLE(of, mpc512x_viu_of_match); |
| 1603 | |
| 1604 | static struct of_platform_driver viu_of_platform_driver = { |
| 1605 | .probe = viu_of_probe, |
| 1606 | .remove = __devexit_p(viu_of_remove), |
| 1607 | #ifdef CONFIG_PM |
| 1608 | .suspend = viu_suspend, |
| 1609 | .resume = viu_resume, |
| 1610 | #endif |
| 1611 | .driver = { |
| 1612 | .name = DRV_NAME, |
| 1613 | .owner = THIS_MODULE, |
| 1614 | .of_match_table = mpc512x_viu_of_match, |
| 1615 | }, |
| 1616 | }; |
| 1617 | |
| 1618 | static int __init viu_init(void) |
| 1619 | { |
| 1620 | return of_register_platform_driver(&viu_of_platform_driver); |
| 1621 | } |
| 1622 | |
| 1623 | static void __exit viu_exit(void) |
| 1624 | { |
| 1625 | of_unregister_platform_driver(&viu_of_platform_driver); |
| 1626 | } |
| 1627 | |
| 1628 | module_init(viu_init); |
| 1629 | module_exit(viu_exit); |
| 1630 | |
| 1631 | MODULE_DESCRIPTION("Freescale Video-In(VIU)"); |
| 1632 | MODULE_AUTHOR("Hongjun Chen"); |
| 1633 | MODULE_LICENSE("GPL"); |