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 <media/v4l2-common.h> |
| 27 | #include <media/v4l2-device.h> |
| 28 | #include <media/v4l2-ioctl.h> |
| 29 | #include <media/videobuf-dma-contig.h> |
| 30 | |
| 31 | #define DRV_NAME "fsl_viu" |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 32 | #define VIU_VERSION "0.5.1" |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 33 | |
| 34 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ |
| 35 | |
| 36 | #define VIU_VID_MEM_LIMIT 4 /* Video memory limit, in Mb */ |
| 37 | |
| 38 | /* I2C address of video decoder chip is 0x4A */ |
| 39 | #define VIU_VIDEO_DECODER_ADDR 0x25 |
| 40 | |
| 41 | /* supported controls */ |
| 42 | static struct v4l2_queryctrl viu_qctrl[] = { |
| 43 | { |
| 44 | .id = V4L2_CID_BRIGHTNESS, |
| 45 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 46 | .name = "Brightness", |
| 47 | .minimum = 0, |
| 48 | .maximum = 255, |
| 49 | .step = 1, |
| 50 | .default_value = 127, |
| 51 | .flags = 0, |
| 52 | }, { |
| 53 | .id = V4L2_CID_CONTRAST, |
| 54 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 55 | .name = "Contrast", |
| 56 | .minimum = 0, |
| 57 | .maximum = 255, |
| 58 | .step = 0x1, |
| 59 | .default_value = 0x10, |
| 60 | .flags = 0, |
| 61 | }, { |
| 62 | .id = V4L2_CID_SATURATION, |
| 63 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 64 | .name = "Saturation", |
| 65 | .minimum = 0, |
| 66 | .maximum = 255, |
| 67 | .step = 0x1, |
| 68 | .default_value = 127, |
| 69 | .flags = 0, |
| 70 | }, { |
| 71 | .id = V4L2_CID_HUE, |
| 72 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 73 | .name = "Hue", |
| 74 | .minimum = -128, |
| 75 | .maximum = 127, |
| 76 | .step = 0x1, |
| 77 | .default_value = 0, |
| 78 | .flags = 0, |
| 79 | } |
| 80 | }; |
| 81 | |
| 82 | static int qctl_regs[ARRAY_SIZE(viu_qctrl)]; |
| 83 | |
| 84 | static int info_level; |
| 85 | |
| 86 | #define dprintk(level, fmt, arg...) \ |
| 87 | do { \ |
| 88 | if (level <= info_level) \ |
| 89 | printk(KERN_DEBUG "viu: " fmt , ## arg); \ |
| 90 | } while (0) |
| 91 | |
| 92 | /* |
| 93 | * Basic structures |
| 94 | */ |
| 95 | struct viu_fmt { |
| 96 | char name[32]; |
| 97 | u32 fourcc; /* v4l2 format id */ |
| 98 | u32 pixelformat; |
| 99 | int depth; |
| 100 | }; |
| 101 | |
| 102 | static struct viu_fmt formats[] = { |
| 103 | { |
| 104 | .name = "RGB-16 (5/B-6/G-5/R)", |
| 105 | .fourcc = V4L2_PIX_FMT_RGB565, |
| 106 | .pixelformat = V4L2_PIX_FMT_RGB565, |
| 107 | .depth = 16, |
| 108 | }, { |
| 109 | .name = "RGB-32 (A-R-G-B)", |
| 110 | .fourcc = V4L2_PIX_FMT_RGB32, |
| 111 | .pixelformat = V4L2_PIX_FMT_RGB32, |
| 112 | .depth = 32, |
| 113 | } |
| 114 | }; |
| 115 | |
| 116 | struct viu_dev; |
| 117 | struct viu_buf; |
| 118 | |
| 119 | /* buffer for one video frame */ |
| 120 | struct viu_buf { |
| 121 | /* common v4l buffer stuff -- must be first */ |
| 122 | struct videobuf_buffer vb; |
| 123 | struct viu_fmt *fmt; |
| 124 | }; |
| 125 | |
| 126 | struct viu_dmaqueue { |
| 127 | struct viu_dev *dev; |
| 128 | struct list_head active; |
| 129 | struct list_head queued; |
| 130 | struct timer_list timeout; |
| 131 | }; |
| 132 | |
| 133 | struct viu_status { |
| 134 | u32 field_irq; |
| 135 | u32 vsync_irq; |
| 136 | u32 hsync_irq; |
| 137 | u32 vstart_irq; |
| 138 | u32 dma_end_irq; |
| 139 | u32 error_irq; |
| 140 | }; |
| 141 | |
| 142 | struct viu_reg { |
| 143 | u32 status_cfg; |
| 144 | u32 luminance; |
| 145 | u32 chroma_r; |
| 146 | u32 chroma_g; |
| 147 | u32 chroma_b; |
| 148 | u32 field_base_addr; |
| 149 | u32 dma_inc; |
| 150 | u32 picture_count; |
| 151 | u32 req_alarm; |
| 152 | u32 alpha; |
| 153 | } __attribute__ ((packed)); |
| 154 | |
| 155 | struct viu_dev { |
| 156 | struct v4l2_device v4l2_dev; |
| 157 | struct mutex lock; |
| 158 | spinlock_t slock; |
| 159 | int users; |
| 160 | |
| 161 | struct device *dev; |
| 162 | /* various device info */ |
| 163 | struct video_device *vdev; |
| 164 | struct viu_dmaqueue vidq; |
| 165 | enum v4l2_field capfield; |
| 166 | int field; |
| 167 | int first; |
| 168 | int dma_done; |
| 169 | |
| 170 | /* Hardware register area */ |
| 171 | struct viu_reg *vr; |
| 172 | |
| 173 | /* Interrupt vector */ |
| 174 | int irq; |
| 175 | struct viu_status irqs; |
| 176 | |
| 177 | /* video overlay */ |
| 178 | struct v4l2_framebuffer ovbuf; |
| 179 | struct viu_fmt *ovfmt; |
| 180 | unsigned int ovenable; |
| 181 | enum v4l2_field ovfield; |
| 182 | |
| 183 | /* crop */ |
| 184 | struct v4l2_rect crop_current; |
| 185 | |
| 186 | /* clock pointer */ |
| 187 | struct clk *clk; |
| 188 | |
| 189 | /* decoder */ |
| 190 | struct v4l2_subdev *decoder; |
Anatolij Gustschin | 50155c2 | 2010-12-22 17:31:59 -0300 | [diff] [blame] | 191 | |
| 192 | v4l2_std_id std; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 193 | }; |
| 194 | |
| 195 | struct viu_fh { |
| 196 | struct viu_dev *dev; |
| 197 | |
| 198 | /* video capture */ |
| 199 | struct videobuf_queue vb_vidq; |
| 200 | spinlock_t vbq_lock; /* spinlock for the videobuf queue */ |
| 201 | |
| 202 | /* video overlay */ |
| 203 | struct v4l2_window win; |
| 204 | struct v4l2_clip clips[1]; |
| 205 | |
| 206 | /* video capture */ |
| 207 | struct viu_fmt *fmt; |
| 208 | int width, height, sizeimage; |
| 209 | enum v4l2_buf_type type; |
| 210 | }; |
| 211 | |
| 212 | static struct viu_reg reg_val; |
| 213 | |
| 214 | /* |
| 215 | * Macro definitions of VIU registers |
| 216 | */ |
| 217 | |
| 218 | /* STATUS_CONFIG register */ |
| 219 | enum status_config { |
| 220 | SOFT_RST = 1 << 0, |
| 221 | |
| 222 | ERR_MASK = 0x0f << 4, /* Error code mask */ |
| 223 | ERR_NO = 0x00, /* No error */ |
| 224 | ERR_DMA_V = 0x01 << 4, /* DMA in vertical active */ |
| 225 | ERR_DMA_VB = 0x02 << 4, /* DMA in vertical blanking */ |
| 226 | ERR_LINE_TOO_LONG = 0x04 << 4, /* Line too long */ |
| 227 | ERR_TOO_MANG_LINES = 0x05 << 4, /* Too many lines in field */ |
| 228 | ERR_LINE_TOO_SHORT = 0x06 << 4, /* Line too short */ |
| 229 | ERR_NOT_ENOUGH_LINE = 0x07 << 4, /* Not enough lines in field */ |
| 230 | ERR_FIFO_OVERFLOW = 0x08 << 4, /* FIFO overflow */ |
| 231 | ERR_FIFO_UNDERFLOW = 0x09 << 4, /* FIFO underflow */ |
| 232 | ERR_1bit_ECC = 0x0a << 4, /* One bit ECC error */ |
| 233 | ERR_MORE_ECC = 0x0b << 4, /* Two/more bits ECC error */ |
| 234 | |
| 235 | INT_FIELD_EN = 0x01 << 8, /* Enable field interrupt */ |
| 236 | INT_VSYNC_EN = 0x01 << 9, /* Enable vsync interrupt */ |
| 237 | INT_HSYNC_EN = 0x01 << 10, /* Enable hsync interrupt */ |
| 238 | INT_VSTART_EN = 0x01 << 11, /* Enable vstart interrupt */ |
| 239 | INT_DMA_END_EN = 0x01 << 12, /* Enable DMA end interrupt */ |
| 240 | INT_ERROR_EN = 0x01 << 13, /* Enable error interrupt */ |
| 241 | INT_ECC_EN = 0x01 << 14, /* Enable ECC interrupt */ |
| 242 | |
| 243 | INT_FIELD_STATUS = 0x01 << 16, /* field interrupt status */ |
| 244 | INT_VSYNC_STATUS = 0x01 << 17, /* vsync interrupt status */ |
| 245 | INT_HSYNC_STATUS = 0x01 << 18, /* hsync interrupt status */ |
| 246 | INT_VSTART_STATUS = 0x01 << 19, /* vstart interrupt status */ |
| 247 | INT_DMA_END_STATUS = 0x01 << 20, /* DMA end interrupt status */ |
| 248 | INT_ERROR_STATUS = 0x01 << 21, /* error interrupt status */ |
| 249 | |
| 250 | DMA_ACT = 0x01 << 27, /* Enable DMA transfer */ |
| 251 | FIELD_NO = 0x01 << 28, /* Field number */ |
| 252 | DITHER_ON = 0x01 << 29, /* Dithering is on */ |
| 253 | ROUND_ON = 0x01 << 30, /* Round is on */ |
| 254 | MODE_32BIT = 0x01 << 31, /* Data in RGBa888, |
| 255 | * 0 in RGB565 |
| 256 | */ |
| 257 | }; |
| 258 | |
| 259 | #define norm_maxw() 720 |
| 260 | #define norm_maxh() 576 |
| 261 | |
| 262 | #define INT_ALL_STATUS (INT_FIELD_STATUS | INT_VSYNC_STATUS | \ |
| 263 | INT_HSYNC_STATUS | INT_VSTART_STATUS | \ |
| 264 | INT_DMA_END_STATUS | INT_ERROR_STATUS) |
| 265 | |
| 266 | #define NUM_FORMATS ARRAY_SIZE(formats) |
| 267 | |
| 268 | static irqreturn_t viu_intr(int irq, void *dev_id); |
| 269 | |
| 270 | struct viu_fmt *format_by_fourcc(int fourcc) |
| 271 | { |
| 272 | int i; |
| 273 | |
| 274 | for (i = 0; i < NUM_FORMATS; i++) { |
| 275 | if (formats[i].pixelformat == fourcc) |
| 276 | return formats + i; |
| 277 | } |
| 278 | |
| 279 | dprintk(0, "unknown pixelformat:'%4.4s'\n", (char *)&fourcc); |
| 280 | return NULL; |
| 281 | } |
| 282 | |
| 283 | void viu_start_dma(struct viu_dev *dev) |
| 284 | { |
| 285 | struct viu_reg *vr = dev->vr; |
| 286 | |
| 287 | dev->field = 0; |
| 288 | |
| 289 | /* Enable DMA operation */ |
| 290 | out_be32(&vr->status_cfg, SOFT_RST); |
| 291 | out_be32(&vr->status_cfg, INT_FIELD_EN); |
| 292 | } |
| 293 | |
| 294 | void viu_stop_dma(struct viu_dev *dev) |
| 295 | { |
| 296 | struct viu_reg *vr = dev->vr; |
| 297 | int cnt = 100; |
| 298 | u32 status_cfg; |
| 299 | |
| 300 | out_be32(&vr->status_cfg, 0); |
| 301 | |
| 302 | /* Clear pending interrupts */ |
| 303 | status_cfg = in_be32(&vr->status_cfg); |
| 304 | if (status_cfg & 0x3f0000) |
| 305 | out_be32(&vr->status_cfg, status_cfg & 0x3f0000); |
| 306 | |
| 307 | if (status_cfg & DMA_ACT) { |
| 308 | do { |
| 309 | status_cfg = in_be32(&vr->status_cfg); |
| 310 | if (status_cfg & INT_DMA_END_STATUS) |
| 311 | break; |
| 312 | } while (cnt--); |
| 313 | |
| 314 | if (cnt < 0) { |
| 315 | /* timed out, issue soft reset */ |
| 316 | out_be32(&vr->status_cfg, SOFT_RST); |
| 317 | out_be32(&vr->status_cfg, 0); |
| 318 | } else { |
| 319 | /* clear DMA_END and other pending irqs */ |
| 320 | out_be32(&vr->status_cfg, status_cfg & 0x3f0000); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | dev->field = 0; |
| 325 | } |
| 326 | |
| 327 | static int restart_video_queue(struct viu_dmaqueue *vidq) |
| 328 | { |
| 329 | struct viu_buf *buf, *prev; |
| 330 | |
| 331 | dprintk(1, "%s vidq=0x%08lx\n", __func__, (unsigned long)vidq); |
| 332 | if (!list_empty(&vidq->active)) { |
| 333 | buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); |
| 334 | dprintk(2, "restart_queue [%p/%d]: restart dma\n", |
| 335 | buf, buf->vb.i); |
| 336 | |
| 337 | viu_stop_dma(vidq->dev); |
| 338 | |
| 339 | /* cancel all outstanding capture requests */ |
| 340 | list_for_each_entry_safe(buf, prev, &vidq->active, vb.queue) { |
| 341 | list_del(&buf->vb.queue); |
| 342 | buf->vb.state = VIDEOBUF_ERROR; |
| 343 | wake_up(&buf->vb.done); |
| 344 | } |
| 345 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 346 | return 0; |
| 347 | } |
| 348 | |
| 349 | prev = NULL; |
| 350 | for (;;) { |
| 351 | if (list_empty(&vidq->queued)) |
| 352 | return 0; |
| 353 | buf = list_entry(vidq->queued.next, struct viu_buf, vb.queue); |
| 354 | if (prev == NULL) { |
Wei Yongjun | 0666c6b | 2012-10-08 08:34:09 -0300 | [diff] [blame] | 355 | list_move_tail(&buf->vb.queue, &vidq->active); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 356 | |
| 357 | dprintk(1, "Restarting video dma\n"); |
| 358 | viu_stop_dma(vidq->dev); |
| 359 | viu_start_dma(vidq->dev); |
| 360 | |
| 361 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 362 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 363 | dprintk(2, "[%p/%d] restart_queue - first active\n", |
| 364 | buf, buf->vb.i); |
| 365 | |
| 366 | } else if (prev->vb.width == buf->vb.width && |
| 367 | prev->vb.height == buf->vb.height && |
| 368 | prev->fmt == buf->fmt) { |
Wei Yongjun | 0666c6b | 2012-10-08 08:34:09 -0300 | [diff] [blame] | 369 | list_move_tail(&buf->vb.queue, &vidq->active); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 370 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 371 | dprintk(2, "[%p/%d] restart_queue - move to active\n", |
| 372 | buf, buf->vb.i); |
| 373 | } else { |
| 374 | return 0; |
| 375 | } |
| 376 | prev = buf; |
| 377 | } |
| 378 | } |
| 379 | |
| 380 | static void viu_vid_timeout(unsigned long data) |
| 381 | { |
| 382 | struct viu_dev *dev = (struct viu_dev *)data; |
| 383 | struct viu_buf *buf; |
| 384 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 385 | |
| 386 | while (!list_empty(&vidq->active)) { |
| 387 | buf = list_entry(vidq->active.next, struct viu_buf, vb.queue); |
| 388 | list_del(&buf->vb.queue); |
| 389 | buf->vb.state = VIDEOBUF_ERROR; |
| 390 | wake_up(&buf->vb.done); |
| 391 | dprintk(1, "viu/0: [%p/%d] timeout\n", buf, buf->vb.i); |
| 392 | } |
| 393 | |
| 394 | restart_video_queue(vidq); |
| 395 | } |
| 396 | |
| 397 | /* |
| 398 | * Videobuf operations |
| 399 | */ |
| 400 | static int buffer_setup(struct videobuf_queue *vq, unsigned int *count, |
| 401 | unsigned int *size) |
| 402 | { |
| 403 | struct viu_fh *fh = vq->priv_data; |
| 404 | |
| 405 | *size = fh->width * fh->height * fh->fmt->depth >> 3; |
| 406 | if (*count == 0) |
| 407 | *count = 32; |
| 408 | |
| 409 | while (*size * *count > VIU_VID_MEM_LIMIT * 1024 * 1024) |
| 410 | (*count)--; |
| 411 | |
| 412 | dprintk(1, "%s, count=%d, size=%d\n", __func__, *count, *size); |
| 413 | return 0; |
| 414 | } |
| 415 | |
| 416 | static void free_buffer(struct videobuf_queue *vq, struct viu_buf *buf) |
| 417 | { |
| 418 | struct videobuf_buffer *vb = &buf->vb; |
| 419 | void *vaddr = NULL; |
| 420 | |
| 421 | BUG_ON(in_interrupt()); |
| 422 | |
Hans Verkuil | 0e0809a | 2010-09-26 09:01:26 -0300 | [diff] [blame] | 423 | videobuf_waiton(vq, &buf->vb, 0, 0); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 424 | |
| 425 | if (vq->int_ops && vq->int_ops->vaddr) |
| 426 | vaddr = vq->int_ops->vaddr(vb); |
| 427 | |
| 428 | if (vaddr) |
| 429 | videobuf_dma_contig_free(vq, &buf->vb); |
| 430 | |
| 431 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| 432 | } |
| 433 | |
| 434 | inline int buffer_activate(struct viu_dev *dev, struct viu_buf *buf) |
| 435 | { |
| 436 | struct viu_reg *vr = dev->vr; |
| 437 | int bpp; |
| 438 | |
| 439 | /* setup the DMA base address */ |
| 440 | reg_val.field_base_addr = videobuf_to_dma_contig(&buf->vb); |
| 441 | |
| 442 | dprintk(1, "buffer_activate [%p/%d]: dma addr 0x%lx\n", |
| 443 | buf, buf->vb.i, (unsigned long)reg_val.field_base_addr); |
| 444 | |
| 445 | /* interlace is on by default, set horizontal DMA increment */ |
| 446 | reg_val.status_cfg = 0; |
| 447 | bpp = buf->fmt->depth >> 3; |
| 448 | switch (bpp) { |
| 449 | case 2: |
| 450 | reg_val.status_cfg &= ~MODE_32BIT; |
| 451 | reg_val.dma_inc = buf->vb.width * 2; |
| 452 | break; |
| 453 | case 4: |
| 454 | reg_val.status_cfg |= MODE_32BIT; |
| 455 | reg_val.dma_inc = buf->vb.width * 4; |
| 456 | break; |
| 457 | default: |
| 458 | dprintk(0, "doesn't support color depth(%d)\n", |
| 459 | bpp * 8); |
| 460 | return -EINVAL; |
| 461 | } |
| 462 | |
| 463 | /* setup picture_count register */ |
| 464 | reg_val.picture_count = (buf->vb.height / 2) << 16 | |
| 465 | buf->vb.width; |
| 466 | |
| 467 | reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; |
| 468 | |
| 469 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 470 | dev->capfield = buf->vb.field; |
| 471 | |
| 472 | /* reset dma increment if needed */ |
| 473 | if (!V4L2_FIELD_HAS_BOTH(buf->vb.field)) |
| 474 | reg_val.dma_inc = 0; |
| 475 | |
| 476 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 477 | out_be32(&vr->picture_count, reg_val.picture_count); |
| 478 | out_be32(&vr->field_base_addr, reg_val.field_base_addr); |
| 479 | mod_timer(&dev->vidq.timeout, jiffies + BUFFER_TIMEOUT); |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | static int buffer_prepare(struct videobuf_queue *vq, |
| 484 | struct videobuf_buffer *vb, |
| 485 | enum v4l2_field field) |
| 486 | { |
| 487 | struct viu_fh *fh = vq->priv_data; |
| 488 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 489 | int rc; |
| 490 | |
| 491 | BUG_ON(fh->fmt == NULL); |
| 492 | |
| 493 | if (fh->width < 48 || fh->width > norm_maxw() || |
| 494 | fh->height < 32 || fh->height > norm_maxh()) |
| 495 | return -EINVAL; |
| 496 | buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3; |
| 497 | if (buf->vb.baddr != 0 && buf->vb.bsize < buf->vb.size) |
| 498 | return -EINVAL; |
| 499 | |
| 500 | if (buf->fmt != fh->fmt || |
| 501 | buf->vb.width != fh->width || |
| 502 | buf->vb.height != fh->height || |
| 503 | buf->vb.field != field) { |
| 504 | buf->fmt = fh->fmt; |
| 505 | buf->vb.width = fh->width; |
| 506 | buf->vb.height = fh->height; |
| 507 | buf->vb.field = field; |
| 508 | } |
| 509 | |
| 510 | if (buf->vb.state == VIDEOBUF_NEEDS_INIT) { |
| 511 | rc = videobuf_iolock(vq, &buf->vb, NULL); |
| 512 | if (rc != 0) |
| 513 | goto fail; |
| 514 | |
| 515 | buf->vb.width = fh->width; |
| 516 | buf->vb.height = fh->height; |
| 517 | buf->vb.field = field; |
| 518 | buf->fmt = fh->fmt; |
| 519 | } |
| 520 | |
| 521 | buf->vb.state = VIDEOBUF_PREPARED; |
| 522 | return 0; |
| 523 | |
| 524 | fail: |
| 525 | free_buffer(vq, buf); |
| 526 | return rc; |
| 527 | } |
| 528 | |
| 529 | static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| 530 | { |
| 531 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 532 | struct viu_fh *fh = vq->priv_data; |
| 533 | struct viu_dev *dev = fh->dev; |
| 534 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 535 | struct viu_buf *prev; |
| 536 | |
| 537 | if (!list_empty(&vidq->queued)) { |
| 538 | dprintk(1, "adding vb queue=0x%08lx\n", |
| 539 | (unsigned long)&buf->vb.queue); |
| 540 | dprintk(1, "vidq pointer 0x%p, queued 0x%p\n", |
| 541 | vidq, &vidq->queued); |
| 542 | dprintk(1, "dev %p, queued: self %p, next %p, head %p\n", |
| 543 | dev, &vidq->queued, vidq->queued.next, |
| 544 | vidq->queued.prev); |
| 545 | list_add_tail(&buf->vb.queue, &vidq->queued); |
| 546 | buf->vb.state = VIDEOBUF_QUEUED; |
| 547 | dprintk(2, "[%p/%d] buffer_queue - append to queued\n", |
| 548 | buf, buf->vb.i); |
| 549 | } else if (list_empty(&vidq->active)) { |
| 550 | dprintk(1, "adding vb active=0x%08lx\n", |
| 551 | (unsigned long)&buf->vb.queue); |
| 552 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 553 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 554 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 555 | dprintk(2, "[%p/%d] buffer_queue - first active\n", |
| 556 | buf, buf->vb.i); |
| 557 | |
| 558 | buffer_activate(dev, buf); |
| 559 | } else { |
| 560 | dprintk(1, "adding vb queue2=0x%08lx\n", |
| 561 | (unsigned long)&buf->vb.queue); |
| 562 | prev = list_entry(vidq->active.prev, struct viu_buf, vb.queue); |
| 563 | if (prev->vb.width == buf->vb.width && |
| 564 | prev->vb.height == buf->vb.height && |
| 565 | prev->fmt == buf->fmt) { |
| 566 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 567 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 568 | dprintk(2, "[%p/%d] buffer_queue - append to active\n", |
| 569 | buf, buf->vb.i); |
| 570 | } else { |
| 571 | list_add_tail(&buf->vb.queue, &vidq->queued); |
| 572 | buf->vb.state = VIDEOBUF_QUEUED; |
| 573 | dprintk(2, "[%p/%d] buffer_queue - first queued\n", |
| 574 | buf, buf->vb.i); |
| 575 | } |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | static void buffer_release(struct videobuf_queue *vq, |
| 580 | struct videobuf_buffer *vb) |
| 581 | { |
| 582 | struct viu_buf *buf = container_of(vb, struct viu_buf, vb); |
| 583 | struct viu_fh *fh = vq->priv_data; |
| 584 | struct viu_dev *dev = (struct viu_dev *)fh->dev; |
| 585 | |
| 586 | viu_stop_dma(dev); |
| 587 | free_buffer(vq, buf); |
| 588 | } |
| 589 | |
| 590 | static struct videobuf_queue_ops viu_video_qops = { |
| 591 | .buf_setup = buffer_setup, |
| 592 | .buf_prepare = buffer_prepare, |
| 593 | .buf_queue = buffer_queue, |
| 594 | .buf_release = buffer_release, |
| 595 | }; |
| 596 | |
| 597 | /* |
| 598 | * IOCTL vidioc handling |
| 599 | */ |
| 600 | static int vidioc_querycap(struct file *file, void *priv, |
| 601 | struct v4l2_capability *cap) |
| 602 | { |
| 603 | strcpy(cap->driver, "viu"); |
| 604 | strcpy(cap->card, "viu"); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 605 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
| 606 | V4L2_CAP_STREAMING | |
| 607 | V4L2_CAP_VIDEO_OVERLAY | |
| 608 | V4L2_CAP_READWRITE; |
| 609 | return 0; |
| 610 | } |
| 611 | |
| 612 | static int vidioc_enum_fmt(struct file *file, void *priv, |
| 613 | struct v4l2_fmtdesc *f) |
| 614 | { |
| 615 | int index = f->index; |
| 616 | |
| 617 | if (f->index > NUM_FORMATS) |
| 618 | return -EINVAL; |
| 619 | |
| 620 | strlcpy(f->description, formats[index].name, sizeof(f->description)); |
| 621 | f->pixelformat = formats[index].fourcc; |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static int vidioc_g_fmt_cap(struct file *file, void *priv, |
| 626 | struct v4l2_format *f) |
| 627 | { |
| 628 | struct viu_fh *fh = priv; |
| 629 | |
| 630 | f->fmt.pix.width = fh->width; |
| 631 | f->fmt.pix.height = fh->height; |
| 632 | f->fmt.pix.field = fh->vb_vidq.field; |
| 633 | f->fmt.pix.pixelformat = fh->fmt->pixelformat; |
| 634 | f->fmt.pix.bytesperline = |
| 635 | (f->fmt.pix.width * fh->fmt->depth) >> 3; |
| 636 | f->fmt.pix.sizeimage = fh->sizeimage; |
| 637 | return 0; |
| 638 | } |
| 639 | |
| 640 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
| 641 | struct v4l2_format *f) |
| 642 | { |
| 643 | struct viu_fmt *fmt; |
| 644 | enum v4l2_field field; |
| 645 | unsigned int maxw, maxh; |
| 646 | |
| 647 | fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| 648 | if (!fmt) { |
| 649 | dprintk(1, "Fourcc format (0x%08x) invalid.", |
| 650 | f->fmt.pix.pixelformat); |
| 651 | return -EINVAL; |
| 652 | } |
| 653 | |
| 654 | field = f->fmt.pix.field; |
| 655 | |
| 656 | if (field == V4L2_FIELD_ANY) { |
| 657 | field = V4L2_FIELD_INTERLACED; |
| 658 | } else if (field != V4L2_FIELD_INTERLACED) { |
| 659 | dprintk(1, "Field type invalid.\n"); |
| 660 | return -EINVAL; |
| 661 | } |
| 662 | |
| 663 | maxw = norm_maxw(); |
| 664 | maxh = norm_maxh(); |
| 665 | |
| 666 | f->fmt.pix.field = field; |
| 667 | if (f->fmt.pix.height < 32) |
| 668 | f->fmt.pix.height = 32; |
| 669 | if (f->fmt.pix.height > maxh) |
| 670 | f->fmt.pix.height = maxh; |
| 671 | if (f->fmt.pix.width < 48) |
| 672 | f->fmt.pix.width = 48; |
| 673 | if (f->fmt.pix.width > maxw) |
| 674 | f->fmt.pix.width = maxw; |
| 675 | f->fmt.pix.width &= ~0x03; |
| 676 | f->fmt.pix.bytesperline = |
| 677 | (f->fmt.pix.width * fmt->depth) >> 3; |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
| 683 | struct v4l2_format *f) |
| 684 | { |
| 685 | struct viu_fh *fh = priv; |
| 686 | int ret; |
| 687 | |
| 688 | ret = vidioc_try_fmt_cap(file, fh, f); |
| 689 | if (ret < 0) |
| 690 | return ret; |
| 691 | |
| 692 | fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat); |
| 693 | fh->width = f->fmt.pix.width; |
| 694 | fh->height = f->fmt.pix.height; |
| 695 | fh->sizeimage = f->fmt.pix.sizeimage; |
| 696 | fh->vb_vidq.field = f->fmt.pix.field; |
| 697 | fh->type = f->type; |
| 698 | dprintk(1, "set to pixelformat '%4.6s'\n", (char *)&fh->fmt->name); |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | static int vidioc_g_fmt_overlay(struct file *file, void *priv, |
| 703 | struct v4l2_format *f) |
| 704 | { |
| 705 | struct viu_fh *fh = priv; |
| 706 | |
| 707 | f->fmt.win = fh->win; |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | static int verify_preview(struct viu_dev *dev, struct v4l2_window *win) |
| 712 | { |
| 713 | enum v4l2_field field; |
| 714 | int maxw, maxh; |
| 715 | |
| 716 | if (dev->ovbuf.base == NULL) |
| 717 | return -EINVAL; |
| 718 | if (dev->ovfmt == NULL) |
| 719 | return -EINVAL; |
| 720 | if (win->w.width < 48 || win->w.height < 32) |
| 721 | return -EINVAL; |
| 722 | |
| 723 | field = win->field; |
| 724 | maxw = dev->crop_current.width; |
| 725 | maxh = dev->crop_current.height; |
| 726 | |
| 727 | if (field == V4L2_FIELD_ANY) { |
| 728 | field = (win->w.height > maxh/2) |
| 729 | ? V4L2_FIELD_INTERLACED |
| 730 | : V4L2_FIELD_TOP; |
| 731 | } |
| 732 | switch (field) { |
| 733 | case V4L2_FIELD_TOP: |
| 734 | case V4L2_FIELD_BOTTOM: |
| 735 | maxh = maxh / 2; |
| 736 | break; |
| 737 | case V4L2_FIELD_INTERLACED: |
| 738 | break; |
| 739 | default: |
| 740 | return -EINVAL; |
| 741 | } |
| 742 | |
| 743 | win->field = field; |
| 744 | if (win->w.width > maxw) |
| 745 | win->w.width = maxw; |
| 746 | if (win->w.height > maxh) |
| 747 | win->w.height = maxh; |
| 748 | return 0; |
| 749 | } |
| 750 | |
| 751 | inline void viu_activate_overlay(struct viu_reg *viu_reg) |
| 752 | { |
| 753 | struct viu_reg *vr = viu_reg; |
| 754 | |
| 755 | out_be32(&vr->field_base_addr, reg_val.field_base_addr); |
| 756 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 757 | out_be32(&vr->picture_count, reg_val.picture_count); |
| 758 | } |
| 759 | |
Anatolij Gustschin | 791ae69 | 2011-05-04 17:19:28 -0300 | [diff] [blame] | 760 | static int viu_setup_preview(struct viu_dev *dev, struct viu_fh *fh) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 761 | { |
| 762 | int bpp; |
| 763 | |
| 764 | dprintk(1, "%s %dx%d %s\n", __func__, |
| 765 | fh->win.w.width, fh->win.w.height, dev->ovfmt->name); |
| 766 | |
| 767 | reg_val.status_cfg = 0; |
| 768 | |
| 769 | /* setup window */ |
| 770 | reg_val.picture_count = (fh->win.w.height / 2) << 16 | |
| 771 | fh->win.w.width; |
| 772 | |
| 773 | /* setup color depth and dma increment */ |
| 774 | bpp = dev->ovfmt->depth / 8; |
| 775 | switch (bpp) { |
| 776 | case 2: |
| 777 | reg_val.status_cfg &= ~MODE_32BIT; |
| 778 | reg_val.dma_inc = fh->win.w.width * 2; |
| 779 | break; |
| 780 | case 4: |
| 781 | reg_val.status_cfg |= MODE_32BIT; |
| 782 | reg_val.dma_inc = fh->win.w.width * 4; |
| 783 | break; |
| 784 | default: |
| 785 | dprintk(0, "device doesn't support color depth(%d)\n", |
| 786 | bpp * 8); |
| 787 | return -EINVAL; |
| 788 | } |
| 789 | |
| 790 | dev->ovfield = fh->win.field; |
| 791 | if (!V4L2_FIELD_HAS_BOTH(dev->ovfield)) |
| 792 | reg_val.dma_inc = 0; |
| 793 | |
| 794 | reg_val.status_cfg |= DMA_ACT | INT_DMA_END_EN | INT_FIELD_EN; |
| 795 | |
| 796 | /* setup the base address of the overlay buffer */ |
| 797 | reg_val.field_base_addr = (u32)dev->ovbuf.base; |
| 798 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | static int vidioc_s_fmt_overlay(struct file *file, void *priv, |
| 803 | struct v4l2_format *f) |
| 804 | { |
| 805 | struct viu_fh *fh = priv; |
| 806 | struct viu_dev *dev = (struct viu_dev *)fh->dev; |
| 807 | unsigned long flags; |
| 808 | int err; |
| 809 | |
| 810 | err = verify_preview(dev, &f->fmt.win); |
| 811 | if (err) |
| 812 | return err; |
| 813 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 814 | fh->win = f->fmt.win; |
| 815 | |
| 816 | spin_lock_irqsave(&dev->slock, flags); |
Anatolij Gustschin | 791ae69 | 2011-05-04 17:19:28 -0300 | [diff] [blame] | 817 | viu_setup_preview(dev, fh); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 818 | spin_unlock_irqrestore(&dev->slock, flags); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 819 | return 0; |
| 820 | } |
| 821 | |
| 822 | static int vidioc_try_fmt_overlay(struct file *file, void *priv, |
| 823 | struct v4l2_format *f) |
| 824 | { |
| 825 | return 0; |
| 826 | } |
| 827 | |
Anatolij Gustschin | 791ae69 | 2011-05-04 17:19:28 -0300 | [diff] [blame] | 828 | static int vidioc_overlay(struct file *file, void *priv, unsigned int on) |
| 829 | { |
| 830 | struct viu_fh *fh = priv; |
| 831 | struct viu_dev *dev = (struct viu_dev *)fh->dev; |
| 832 | unsigned long flags; |
| 833 | |
| 834 | if (on) { |
| 835 | spin_lock_irqsave(&dev->slock, flags); |
| 836 | viu_activate_overlay(dev->vr); |
| 837 | dev->ovenable = 1; |
| 838 | |
| 839 | /* start dma */ |
| 840 | viu_start_dma(dev); |
| 841 | spin_unlock_irqrestore(&dev->slock, flags); |
| 842 | } else { |
| 843 | viu_stop_dma(dev); |
| 844 | dev->ovenable = 0; |
| 845 | } |
| 846 | |
| 847 | return 0; |
| 848 | } |
| 849 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 850 | int vidioc_g_fbuf(struct file *file, void *priv, struct v4l2_framebuffer *arg) |
| 851 | { |
| 852 | struct viu_fh *fh = priv; |
| 853 | struct viu_dev *dev = fh->dev; |
| 854 | struct v4l2_framebuffer *fb = arg; |
| 855 | |
| 856 | *fb = dev->ovbuf; |
| 857 | fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; |
| 858 | return 0; |
| 859 | } |
| 860 | |
Hans Verkuil | e6eb28c | 2012-09-04 10:26:45 -0300 | [diff] [blame] | 861 | int vidioc_s_fbuf(struct file *file, void *priv, const struct v4l2_framebuffer *arg) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 862 | { |
| 863 | struct viu_fh *fh = priv; |
| 864 | struct viu_dev *dev = fh->dev; |
Hans Verkuil | 99b32b2 | 2012-09-04 10:26:45 -0300 | [diff] [blame] | 865 | const struct v4l2_framebuffer *fb = arg; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 866 | struct viu_fmt *fmt; |
| 867 | |
| 868 | if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) |
| 869 | return -EPERM; |
| 870 | |
| 871 | /* check args */ |
| 872 | fmt = format_by_fourcc(fb->fmt.pixelformat); |
| 873 | if (fmt == NULL) |
| 874 | return -EINVAL; |
| 875 | |
| 876 | /* ok, accept it */ |
| 877 | dev->ovbuf = *fb; |
| 878 | dev->ovfmt = fmt; |
| 879 | if (dev->ovbuf.fmt.bytesperline == 0) { |
| 880 | dev->ovbuf.fmt.bytesperline = |
| 881 | dev->ovbuf.fmt.width * fmt->depth / 8; |
| 882 | } |
| 883 | return 0; |
| 884 | } |
| 885 | |
| 886 | static int vidioc_reqbufs(struct file *file, void *priv, |
| 887 | struct v4l2_requestbuffers *p) |
| 888 | { |
| 889 | struct viu_fh *fh = priv; |
| 890 | |
| 891 | return videobuf_reqbufs(&fh->vb_vidq, p); |
| 892 | } |
| 893 | |
| 894 | static int vidioc_querybuf(struct file *file, void *priv, |
| 895 | struct v4l2_buffer *p) |
| 896 | { |
| 897 | struct viu_fh *fh = priv; |
| 898 | |
| 899 | return videobuf_querybuf(&fh->vb_vidq, p); |
| 900 | } |
| 901 | |
| 902 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
| 903 | { |
| 904 | struct viu_fh *fh = priv; |
| 905 | |
| 906 | return videobuf_qbuf(&fh->vb_vidq, p); |
| 907 | } |
| 908 | |
| 909 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) |
| 910 | { |
| 911 | struct viu_fh *fh = priv; |
| 912 | |
| 913 | return videobuf_dqbuf(&fh->vb_vidq, p, |
| 914 | file->f_flags & O_NONBLOCK); |
| 915 | } |
| 916 | |
| 917 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
| 918 | { |
| 919 | struct viu_fh *fh = priv; |
Anatolij Gustschin | f3b1af1 | 2011-04-12 08:15:58 -0300 | [diff] [blame] | 920 | struct viu_dev *dev = fh->dev; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 921 | |
| 922 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 923 | return -EINVAL; |
| 924 | if (fh->type != i) |
| 925 | return -EINVAL; |
| 926 | |
Anatolij Gustschin | f3b1af1 | 2011-04-12 08:15:58 -0300 | [diff] [blame] | 927 | if (dev->ovenable) |
| 928 | dev->ovenable = 0; |
| 929 | |
Anatolij Gustschin | c335333 | 2010-12-17 06:40:50 -0300 | [diff] [blame] | 930 | viu_start_dma(fh->dev); |
| 931 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 932 | return videobuf_streamon(&fh->vb_vidq); |
| 933 | } |
| 934 | |
| 935 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
| 936 | { |
| 937 | struct viu_fh *fh = priv; |
| 938 | |
| 939 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 940 | return -EINVAL; |
| 941 | if (fh->type != i) |
| 942 | return -EINVAL; |
| 943 | |
Anatolij Gustschin | c335333 | 2010-12-17 06:40:50 -0300 | [diff] [blame] | 944 | viu_stop_dma(fh->dev); |
| 945 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 946 | return videobuf_streamoff(&fh->vb_vidq); |
| 947 | } |
| 948 | |
| 949 | #define decoder_call(viu, o, f, args...) \ |
| 950 | v4l2_subdev_call(viu->decoder, o, f, ##args) |
| 951 | |
Anatolij Gustschin | 50155c2 | 2010-12-22 17:31:59 -0300 | [diff] [blame] | 952 | static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std_id) |
| 953 | { |
| 954 | struct viu_fh *fh = priv; |
| 955 | |
| 956 | decoder_call(fh->dev, video, querystd, std_id); |
| 957 | return 0; |
| 958 | } |
| 959 | |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 960 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 961 | { |
| 962 | struct viu_fh *fh = priv; |
| 963 | |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 964 | fh->dev->std = id; |
| 965 | decoder_call(fh->dev, core, s_std, id); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 966 | return 0; |
| 967 | } |
| 968 | |
Anatolij Gustschin | 50155c2 | 2010-12-22 17:31:59 -0300 | [diff] [blame] | 969 | static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std_id) |
| 970 | { |
| 971 | struct viu_fh *fh = priv; |
| 972 | |
| 973 | *std_id = fh->dev->std; |
| 974 | return 0; |
| 975 | } |
| 976 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 977 | /* only one input in this driver */ |
| 978 | static int vidioc_enum_input(struct file *file, void *priv, |
| 979 | struct v4l2_input *inp) |
| 980 | { |
| 981 | struct viu_fh *fh = priv; |
| 982 | |
| 983 | if (inp->index != 0) |
| 984 | return -EINVAL; |
| 985 | |
| 986 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
| 987 | inp->std = fh->dev->vdev->tvnorms; |
| 988 | strcpy(inp->name, "Camera"); |
| 989 | return 0; |
| 990 | } |
| 991 | |
| 992 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
| 993 | { |
| 994 | *i = 0; |
| 995 | return 0; |
| 996 | } |
| 997 | |
| 998 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
| 999 | { |
| 1000 | struct viu_fh *fh = priv; |
| 1001 | |
| 1002 | if (i > 1) |
| 1003 | return -EINVAL; |
| 1004 | |
| 1005 | decoder_call(fh->dev, video, s_routing, i, 0, 0); |
| 1006 | return 0; |
| 1007 | } |
| 1008 | |
| 1009 | /* Controls */ |
| 1010 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 1011 | struct v4l2_queryctrl *qc) |
| 1012 | { |
| 1013 | int i; |
| 1014 | |
| 1015 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 1016 | if (qc->id && qc->id == viu_qctrl[i].id) { |
| 1017 | memcpy(qc, &(viu_qctrl[i]), sizeof(*qc)); |
| 1018 | return 0; |
| 1019 | } |
| 1020 | } |
| 1021 | return -EINVAL; |
| 1022 | } |
| 1023 | |
| 1024 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 1025 | struct v4l2_control *ctrl) |
| 1026 | { |
| 1027 | int i; |
| 1028 | |
| 1029 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 1030 | if (ctrl->id == viu_qctrl[i].id) { |
| 1031 | ctrl->value = qctl_regs[i]; |
| 1032 | return 0; |
| 1033 | } |
| 1034 | } |
| 1035 | return -EINVAL; |
| 1036 | } |
| 1037 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 1038 | struct v4l2_control *ctrl) |
| 1039 | { |
| 1040 | int i; |
| 1041 | |
| 1042 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) { |
| 1043 | if (ctrl->id == viu_qctrl[i].id) { |
| 1044 | if (ctrl->value < viu_qctrl[i].minimum |
| 1045 | || ctrl->value > viu_qctrl[i].maximum) |
| 1046 | return -ERANGE; |
| 1047 | qctl_regs[i] = ctrl->value; |
| 1048 | return 0; |
| 1049 | } |
| 1050 | } |
| 1051 | return -EINVAL; |
| 1052 | } |
| 1053 | |
| 1054 | inline void viu_activate_next_buf(struct viu_dev *dev, |
| 1055 | struct viu_dmaqueue *viuq) |
| 1056 | { |
| 1057 | struct viu_dmaqueue *vidq = viuq; |
| 1058 | struct viu_buf *buf; |
| 1059 | |
| 1060 | /* launch another DMA operation for an active/queued buffer */ |
| 1061 | if (!list_empty(&vidq->active)) { |
| 1062 | buf = list_entry(vidq->active.next, struct viu_buf, |
| 1063 | vb.queue); |
| 1064 | dprintk(1, "start another queued buffer: 0x%p\n", buf); |
| 1065 | buffer_activate(dev, buf); |
| 1066 | } else if (!list_empty(&vidq->queued)) { |
| 1067 | buf = list_entry(vidq->queued.next, struct viu_buf, |
| 1068 | vb.queue); |
| 1069 | list_del(&buf->vb.queue); |
| 1070 | |
| 1071 | dprintk(1, "start another queued buffer: 0x%p\n", buf); |
| 1072 | list_add_tail(&buf->vb.queue, &vidq->active); |
| 1073 | buf->vb.state = VIDEOBUF_ACTIVE; |
| 1074 | buffer_activate(dev, buf); |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | inline void viu_default_settings(struct viu_reg *viu_reg) |
| 1079 | { |
| 1080 | struct viu_reg *vr = viu_reg; |
| 1081 | |
| 1082 | out_be32(&vr->luminance, 0x9512A254); |
| 1083 | out_be32(&vr->chroma_r, 0x03310000); |
| 1084 | out_be32(&vr->chroma_g, 0x06600F38); |
| 1085 | out_be32(&vr->chroma_b, 0x00000409); |
| 1086 | out_be32(&vr->alpha, 0x000000ff); |
| 1087 | out_be32(&vr->req_alarm, 0x00000090); |
| 1088 | dprintk(1, "status reg: 0x%08x, field base: 0x%08x\n", |
| 1089 | in_be32(&vr->status_cfg), in_be32(&vr->field_base_addr)); |
| 1090 | } |
| 1091 | |
| 1092 | static void viu_overlay_intr(struct viu_dev *dev, u32 status) |
| 1093 | { |
| 1094 | struct viu_reg *vr = dev->vr; |
| 1095 | |
| 1096 | if (status & INT_DMA_END_STATUS) |
| 1097 | dev->dma_done = 1; |
| 1098 | |
| 1099 | if (status & INT_FIELD_STATUS) { |
| 1100 | if (dev->dma_done) { |
| 1101 | u32 addr = reg_val.field_base_addr; |
| 1102 | |
| 1103 | dev->dma_done = 0; |
| 1104 | if (status & FIELD_NO) |
| 1105 | addr += reg_val.dma_inc; |
| 1106 | |
| 1107 | out_be32(&vr->field_base_addr, addr); |
| 1108 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 1109 | out_be32(&vr->status_cfg, |
| 1110 | (status & 0xffc0ffff) | |
| 1111 | (status & INT_ALL_STATUS) | |
| 1112 | reg_val.status_cfg); |
| 1113 | } else if (status & INT_VSYNC_STATUS) { |
| 1114 | out_be32(&vr->status_cfg, |
| 1115 | (status & 0xffc0ffff) | |
| 1116 | (status & INT_ALL_STATUS) | |
| 1117 | reg_val.status_cfg); |
| 1118 | } |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | static void viu_capture_intr(struct viu_dev *dev, u32 status) |
| 1123 | { |
| 1124 | struct viu_dmaqueue *vidq = &dev->vidq; |
| 1125 | struct viu_reg *vr = dev->vr; |
| 1126 | struct viu_buf *buf; |
| 1127 | int field_num; |
| 1128 | int need_two; |
| 1129 | int dma_done = 0; |
| 1130 | |
| 1131 | field_num = status & FIELD_NO; |
| 1132 | need_two = V4L2_FIELD_HAS_BOTH(dev->capfield); |
| 1133 | |
| 1134 | if (status & INT_DMA_END_STATUS) { |
| 1135 | dma_done = 1; |
| 1136 | if (((field_num == 0) && (dev->field == 0)) || |
| 1137 | (field_num && (dev->field == 1))) |
| 1138 | dev->field++; |
| 1139 | } |
| 1140 | |
| 1141 | if (status & INT_FIELD_STATUS) { |
| 1142 | dprintk(1, "irq: field %d, done %d\n", |
| 1143 | !!field_num, dma_done); |
| 1144 | if (unlikely(dev->first)) { |
| 1145 | if (field_num == 0) { |
| 1146 | dev->first = 0; |
| 1147 | dprintk(1, "activate first buf\n"); |
| 1148 | viu_activate_next_buf(dev, vidq); |
| 1149 | } else |
| 1150 | dprintk(1, "wait field 0\n"); |
| 1151 | return; |
| 1152 | } |
| 1153 | |
| 1154 | /* setup buffer address for next dma operation */ |
| 1155 | if (!list_empty(&vidq->active)) { |
| 1156 | u32 addr = reg_val.field_base_addr; |
| 1157 | |
| 1158 | if (field_num && need_two) { |
| 1159 | addr += reg_val.dma_inc; |
| 1160 | dprintk(1, "field 1, 0x%lx, dev field %d\n", |
| 1161 | (unsigned long)addr, dev->field); |
| 1162 | } |
| 1163 | out_be32(&vr->field_base_addr, addr); |
| 1164 | out_be32(&vr->dma_inc, reg_val.dma_inc); |
| 1165 | out_be32(&vr->status_cfg, |
| 1166 | (status & 0xffc0ffff) | |
| 1167 | (status & INT_ALL_STATUS) | |
| 1168 | reg_val.status_cfg); |
| 1169 | return; |
| 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | if (dma_done && field_num && (dev->field == 2)) { |
| 1174 | dev->field = 0; |
| 1175 | buf = list_entry(vidq->active.next, |
| 1176 | struct viu_buf, vb.queue); |
| 1177 | dprintk(1, "viu/0: [%p/%d] 0x%lx/0x%lx: dma complete\n", |
| 1178 | buf, buf->vb.i, |
| 1179 | (unsigned long)videobuf_to_dma_contig(&buf->vb), |
| 1180 | (unsigned long)in_be32(&vr->field_base_addr)); |
| 1181 | |
| 1182 | if (waitqueue_active(&buf->vb.done)) { |
| 1183 | list_del(&buf->vb.queue); |
Sakari Ailus | 8e6057b | 2012-09-15 15:14:42 -0300 | [diff] [blame] | 1184 | v4l2_get_timestamp(&buf->vb.ts); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1185 | buf->vb.state = VIDEOBUF_DONE; |
| 1186 | buf->vb.field_count++; |
| 1187 | wake_up(&buf->vb.done); |
| 1188 | } |
| 1189 | /* activate next dma buffer */ |
| 1190 | viu_activate_next_buf(dev, vidq); |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | static irqreturn_t viu_intr(int irq, void *dev_id) |
| 1195 | { |
| 1196 | struct viu_dev *dev = (struct viu_dev *)dev_id; |
| 1197 | struct viu_reg *vr = dev->vr; |
| 1198 | u32 status; |
| 1199 | u32 error; |
| 1200 | |
| 1201 | status = in_be32(&vr->status_cfg); |
| 1202 | |
| 1203 | if (status & INT_ERROR_STATUS) { |
| 1204 | dev->irqs.error_irq++; |
| 1205 | error = status & ERR_MASK; |
| 1206 | if (error) |
| 1207 | dprintk(1, "Err: error(%d), times:%d!\n", |
| 1208 | error >> 4, dev->irqs.error_irq); |
| 1209 | /* Clear interrupt error bit and error flags */ |
| 1210 | out_be32(&vr->status_cfg, |
| 1211 | (status & 0xffc0ffff) | INT_ERROR_STATUS); |
| 1212 | } |
| 1213 | |
| 1214 | if (status & INT_DMA_END_STATUS) { |
| 1215 | dev->irqs.dma_end_irq++; |
| 1216 | dev->dma_done = 1; |
| 1217 | dprintk(2, "VIU DMA end interrupt times: %d\n", |
| 1218 | dev->irqs.dma_end_irq); |
| 1219 | } |
| 1220 | |
| 1221 | if (status & INT_HSYNC_STATUS) |
| 1222 | dev->irqs.hsync_irq++; |
| 1223 | |
| 1224 | if (status & INT_FIELD_STATUS) { |
| 1225 | dev->irqs.field_irq++; |
| 1226 | dprintk(2, "VIU field interrupt times: %d\n", |
| 1227 | dev->irqs.field_irq); |
| 1228 | } |
| 1229 | |
| 1230 | if (status & INT_VSTART_STATUS) |
| 1231 | dev->irqs.vstart_irq++; |
| 1232 | |
| 1233 | if (status & INT_VSYNC_STATUS) { |
| 1234 | dev->irqs.vsync_irq++; |
| 1235 | dprintk(2, "VIU vsync interrupt times: %d\n", |
| 1236 | dev->irqs.vsync_irq); |
| 1237 | } |
| 1238 | |
| 1239 | /* clear all pending irqs */ |
| 1240 | status = in_be32(&vr->status_cfg); |
| 1241 | out_be32(&vr->status_cfg, |
| 1242 | (status & 0xffc0ffff) | (status & INT_ALL_STATUS)); |
| 1243 | |
| 1244 | if (dev->ovenable) { |
| 1245 | viu_overlay_intr(dev, status); |
| 1246 | return IRQ_HANDLED; |
| 1247 | } |
| 1248 | |
| 1249 | /* Capture mode */ |
| 1250 | viu_capture_intr(dev, status); |
| 1251 | return IRQ_HANDLED; |
| 1252 | } |
| 1253 | |
| 1254 | /* |
| 1255 | * File operations for the device |
| 1256 | */ |
| 1257 | static int viu_open(struct file *file) |
| 1258 | { |
| 1259 | struct video_device *vdev = video_devdata(file); |
| 1260 | struct viu_dev *dev = video_get_drvdata(vdev); |
| 1261 | struct viu_fh *fh; |
| 1262 | struct viu_reg *vr; |
| 1263 | int minor = vdev->minor; |
| 1264 | u32 status_cfg; |
| 1265 | int i; |
| 1266 | |
| 1267 | dprintk(1, "viu: open (minor=%d)\n", minor); |
| 1268 | |
| 1269 | dev->users++; |
| 1270 | if (dev->users > 1) { |
| 1271 | dev->users--; |
| 1272 | return -EBUSY; |
| 1273 | } |
| 1274 | |
| 1275 | vr = dev->vr; |
| 1276 | |
| 1277 | dprintk(1, "open minor=%d type=%s users=%d\n", minor, |
| 1278 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
| 1279 | |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1280 | if (mutex_lock_interruptible(&dev->lock)) { |
| 1281 | dev->users--; |
| 1282 | return -ERESTARTSYS; |
| 1283 | } |
| 1284 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1285 | /* allocate and initialize per filehandle data */ |
| 1286 | fh = kzalloc(sizeof(*fh), GFP_KERNEL); |
| 1287 | if (!fh) { |
| 1288 | dev->users--; |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1289 | mutex_unlock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1290 | return -ENOMEM; |
| 1291 | } |
| 1292 | |
| 1293 | file->private_data = fh; |
| 1294 | fh->dev = dev; |
| 1295 | |
| 1296 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1297 | fh->fmt = format_by_fourcc(V4L2_PIX_FMT_RGB32); |
| 1298 | fh->width = norm_maxw(); |
| 1299 | fh->height = norm_maxh(); |
| 1300 | dev->crop_current.width = fh->width; |
| 1301 | dev->crop_current.height = fh->height; |
| 1302 | |
| 1303 | /* Put all controls at a sane state */ |
| 1304 | for (i = 0; i < ARRAY_SIZE(viu_qctrl); i++) |
| 1305 | qctl_regs[i] = viu_qctrl[i].default_value; |
| 1306 | |
| 1307 | dprintk(1, "Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", |
| 1308 | (unsigned long)fh, (unsigned long)dev, |
| 1309 | (unsigned long)&dev->vidq); |
| 1310 | dprintk(1, "Open: list_empty queued=%d\n", |
| 1311 | list_empty(&dev->vidq.queued)); |
| 1312 | dprintk(1, "Open: list_empty active=%d\n", |
| 1313 | list_empty(&dev->vidq.active)); |
| 1314 | |
| 1315 | viu_default_settings(vr); |
| 1316 | |
| 1317 | status_cfg = in_be32(&vr->status_cfg); |
| 1318 | out_be32(&vr->status_cfg, |
| 1319 | status_cfg & ~(INT_VSYNC_EN | INT_HSYNC_EN | |
| 1320 | INT_FIELD_EN | INT_VSTART_EN | |
| 1321 | INT_DMA_END_EN | INT_ERROR_EN | INT_ECC_EN)); |
| 1322 | |
| 1323 | status_cfg = in_be32(&vr->status_cfg); |
| 1324 | out_be32(&vr->status_cfg, status_cfg | INT_ALL_STATUS); |
| 1325 | |
| 1326 | spin_lock_init(&fh->vbq_lock); |
| 1327 | videobuf_queue_dma_contig_init(&fh->vb_vidq, &viu_video_qops, |
| 1328 | dev->dev, &fh->vbq_lock, |
| 1329 | fh->type, V4L2_FIELD_INTERLACED, |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1330 | sizeof(struct viu_buf), fh, |
| 1331 | &fh->dev->lock); |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1332 | mutex_unlock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1333 | return 0; |
| 1334 | } |
| 1335 | |
| 1336 | static ssize_t viu_read(struct file *file, char __user *data, size_t count, |
| 1337 | loff_t *ppos) |
| 1338 | { |
| 1339 | struct viu_fh *fh = file->private_data; |
| 1340 | struct viu_dev *dev = fh->dev; |
| 1341 | int ret = 0; |
| 1342 | |
| 1343 | dprintk(2, "%s\n", __func__); |
| 1344 | if (dev->ovenable) |
| 1345 | dev->ovenable = 0; |
| 1346 | |
| 1347 | if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1348 | if (mutex_lock_interruptible(&dev->lock)) |
| 1349 | return -ERESTARTSYS; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1350 | viu_start_dma(dev); |
| 1351 | ret = videobuf_read_stream(&fh->vb_vidq, data, count, |
| 1352 | ppos, 0, file->f_flags & O_NONBLOCK); |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1353 | mutex_unlock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1354 | return ret; |
| 1355 | } |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | static unsigned int viu_poll(struct file *file, struct poll_table_struct *wait) |
| 1360 | { |
| 1361 | struct viu_fh *fh = file->private_data; |
| 1362 | struct videobuf_queue *q = &fh->vb_vidq; |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1363 | struct viu_dev *dev = fh->dev; |
| 1364 | unsigned int res; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1365 | |
| 1366 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) |
| 1367 | return POLLERR; |
| 1368 | |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1369 | mutex_lock(&dev->lock); |
| 1370 | res = videobuf_poll_stream(file, q, wait); |
| 1371 | mutex_unlock(&dev->lock); |
| 1372 | return res; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1373 | } |
| 1374 | |
| 1375 | static int viu_release(struct file *file) |
| 1376 | { |
| 1377 | struct viu_fh *fh = file->private_data; |
| 1378 | struct viu_dev *dev = fh->dev; |
| 1379 | int minor = video_devdata(file)->minor; |
| 1380 | |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1381 | mutex_lock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1382 | viu_stop_dma(dev); |
| 1383 | videobuf_stop(&fh->vb_vidq); |
Anatolij Gustschin | c335333 | 2010-12-17 06:40:50 -0300 | [diff] [blame] | 1384 | videobuf_mmap_free(&fh->vb_vidq); |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1385 | mutex_unlock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1386 | |
| 1387 | kfree(fh); |
| 1388 | |
| 1389 | dev->users--; |
| 1390 | dprintk(1, "close (minor=%d, users=%d)\n", |
| 1391 | minor, dev->users); |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
| 1395 | void viu_reset(struct viu_reg *reg) |
| 1396 | { |
| 1397 | out_be32(®->status_cfg, 0); |
| 1398 | out_be32(®->luminance, 0x9512a254); |
| 1399 | out_be32(®->chroma_r, 0x03310000); |
| 1400 | out_be32(®->chroma_g, 0x06600f38); |
| 1401 | out_be32(®->chroma_b, 0x00000409); |
| 1402 | out_be32(®->field_base_addr, 0); |
| 1403 | out_be32(®->dma_inc, 0); |
| 1404 | out_be32(®->picture_count, 0x01e002d0); |
| 1405 | out_be32(®->req_alarm, 0x00000090); |
| 1406 | out_be32(®->alpha, 0x000000ff); |
| 1407 | } |
| 1408 | |
| 1409 | static int viu_mmap(struct file *file, struct vm_area_struct *vma) |
| 1410 | { |
| 1411 | struct viu_fh *fh = file->private_data; |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1412 | struct viu_dev *dev = fh->dev; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1413 | int ret; |
| 1414 | |
| 1415 | dprintk(1, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
| 1416 | |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1417 | if (mutex_lock_interruptible(&dev->lock)) |
| 1418 | return -ERESTARTSYS; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1419 | ret = videobuf_mmap_mapper(&fh->vb_vidq, vma); |
Hans Verkuil | 87cb027 | 2012-06-23 08:46:43 -0300 | [diff] [blame] | 1420 | mutex_unlock(&dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1421 | |
| 1422 | dprintk(1, "vma start=0x%08lx, size=%ld, ret=%d\n", |
| 1423 | (unsigned long)vma->vm_start, |
| 1424 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, |
| 1425 | ret); |
| 1426 | |
| 1427 | return ret; |
| 1428 | } |
| 1429 | |
| 1430 | static struct v4l2_file_operations viu_fops = { |
| 1431 | .owner = THIS_MODULE, |
| 1432 | .open = viu_open, |
| 1433 | .release = viu_release, |
| 1434 | .read = viu_read, |
| 1435 | .poll = viu_poll, |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1436 | .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1437 | .mmap = viu_mmap, |
| 1438 | }; |
| 1439 | |
| 1440 | static const struct v4l2_ioctl_ops viu_ioctl_ops = { |
| 1441 | .vidioc_querycap = vidioc_querycap, |
| 1442 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt, |
| 1443 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_cap, |
| 1444 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_cap, |
| 1445 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_cap, |
| 1446 | .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt, |
| 1447 | .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_overlay, |
| 1448 | .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_overlay, |
| 1449 | .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_overlay, |
Anatolij Gustschin | 791ae69 | 2011-05-04 17:19:28 -0300 | [diff] [blame] | 1450 | .vidioc_overlay = vidioc_overlay, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1451 | .vidioc_g_fbuf = vidioc_g_fbuf, |
| 1452 | .vidioc_s_fbuf = vidioc_s_fbuf, |
| 1453 | .vidioc_reqbufs = vidioc_reqbufs, |
| 1454 | .vidioc_querybuf = vidioc_querybuf, |
| 1455 | .vidioc_qbuf = vidioc_qbuf, |
| 1456 | .vidioc_dqbuf = vidioc_dqbuf, |
Anatolij Gustschin | 50155c2 | 2010-12-22 17:31:59 -0300 | [diff] [blame] | 1457 | .vidioc_g_std = vidioc_g_std, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1458 | .vidioc_s_std = vidioc_s_std, |
Anatolij Gustschin | 50155c2 | 2010-12-22 17:31:59 -0300 | [diff] [blame] | 1459 | .vidioc_querystd = vidioc_querystd, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1460 | .vidioc_enum_input = vidioc_enum_input, |
| 1461 | .vidioc_g_input = vidioc_g_input, |
| 1462 | .vidioc_s_input = vidioc_s_input, |
| 1463 | .vidioc_queryctrl = vidioc_queryctrl, |
| 1464 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 1465 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 1466 | .vidioc_streamon = vidioc_streamon, |
| 1467 | .vidioc_streamoff = vidioc_streamoff, |
| 1468 | }; |
| 1469 | |
| 1470 | static struct video_device viu_template = { |
| 1471 | .name = "FSL viu", |
| 1472 | .fops = &viu_fops, |
| 1473 | .minor = -1, |
| 1474 | .ioctl_ops = &viu_ioctl_ops, |
| 1475 | .release = video_device_release, |
| 1476 | |
| 1477 | .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1478 | }; |
| 1479 | |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1480 | static int viu_of_probe(struct platform_device *op) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1481 | { |
| 1482 | struct viu_dev *viu_dev; |
| 1483 | struct video_device *vdev; |
| 1484 | struct resource r; |
| 1485 | struct viu_reg __iomem *viu_regs; |
| 1486 | struct i2c_adapter *ad; |
| 1487 | int ret, viu_irq; |
Gerhard Sittig | a5d7a6d | 2013-07-01 18:54:41 +0200 | [diff] [blame] | 1488 | struct clk *clk; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1489 | |
| 1490 | ret = of_address_to_resource(op->dev.of_node, 0, &r); |
| 1491 | if (ret) { |
| 1492 | dev_err(&op->dev, "Can't parse device node resource\n"); |
| 1493 | return -ENODEV; |
| 1494 | } |
| 1495 | |
| 1496 | viu_irq = irq_of_parse_and_map(op->dev.of_node, 0); |
| 1497 | if (viu_irq == NO_IRQ) { |
| 1498 | dev_err(&op->dev, "Error while mapping the irq\n"); |
| 1499 | return -EINVAL; |
| 1500 | } |
| 1501 | |
| 1502 | /* request mem region */ |
| 1503 | if (!devm_request_mem_region(&op->dev, r.start, |
| 1504 | sizeof(struct viu_reg), DRV_NAME)) { |
| 1505 | dev_err(&op->dev, "Error while requesting mem region\n"); |
| 1506 | ret = -EBUSY; |
| 1507 | goto err; |
| 1508 | } |
| 1509 | |
| 1510 | /* remap registers */ |
| 1511 | viu_regs = devm_ioremap(&op->dev, r.start, sizeof(struct viu_reg)); |
| 1512 | if (!viu_regs) { |
| 1513 | dev_err(&op->dev, "Can't map register set\n"); |
| 1514 | ret = -ENOMEM; |
| 1515 | goto err; |
| 1516 | } |
| 1517 | |
| 1518 | /* Prepare our private structure */ |
| 1519 | viu_dev = devm_kzalloc(&op->dev, sizeof(struct viu_dev), GFP_ATOMIC); |
| 1520 | if (!viu_dev) { |
| 1521 | dev_err(&op->dev, "Can't allocate private structure\n"); |
| 1522 | ret = -ENOMEM; |
| 1523 | goto err; |
| 1524 | } |
| 1525 | |
| 1526 | viu_dev->vr = viu_regs; |
| 1527 | viu_dev->irq = viu_irq; |
| 1528 | viu_dev->dev = &op->dev; |
| 1529 | |
| 1530 | /* init video dma queues */ |
| 1531 | INIT_LIST_HEAD(&viu_dev->vidq.active); |
| 1532 | INIT_LIST_HEAD(&viu_dev->vidq.queued); |
| 1533 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1534 | snprintf(viu_dev->v4l2_dev.name, |
| 1535 | sizeof(viu_dev->v4l2_dev.name), "%s", "VIU"); |
| 1536 | ret = v4l2_device_register(viu_dev->dev, &viu_dev->v4l2_dev); |
| 1537 | if (ret < 0) { |
| 1538 | dev_err(&op->dev, "v4l2_device_register() failed: %d\n", ret); |
| 1539 | goto err; |
| 1540 | } |
| 1541 | |
| 1542 | ad = i2c_get_adapter(0); |
| 1543 | viu_dev->decoder = v4l2_i2c_new_subdev(&viu_dev->v4l2_dev, ad, |
Laurent Pinchart | 9a1f8b3 | 2010-09-24 10:16:44 -0300 | [diff] [blame] | 1544 | "saa7113", VIU_VIDEO_DECODER_ADDR, NULL); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1545 | |
| 1546 | viu_dev->vidq.timeout.function = viu_vid_timeout; |
| 1547 | viu_dev->vidq.timeout.data = (unsigned long)viu_dev; |
| 1548 | init_timer(&viu_dev->vidq.timeout); |
Hans Verkuil | 28221f8 | 2013-06-03 05:36:43 -0300 | [diff] [blame] | 1549 | viu_dev->std = V4L2_STD_NTSC_M; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1550 | viu_dev->first = 1; |
| 1551 | |
| 1552 | /* Allocate memory for video device */ |
| 1553 | vdev = video_device_alloc(); |
| 1554 | if (vdev == NULL) { |
| 1555 | ret = -ENOMEM; |
| 1556 | goto err_vdev; |
| 1557 | } |
| 1558 | |
| 1559 | memcpy(vdev, &viu_template, sizeof(viu_template)); |
| 1560 | |
| 1561 | vdev->v4l2_dev = &viu_dev->v4l2_dev; |
| 1562 | |
| 1563 | viu_dev->vdev = vdev; |
| 1564 | |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1565 | /* initialize locks */ |
| 1566 | mutex_init(&viu_dev->lock); |
| 1567 | viu_dev->vdev->lock = &viu_dev->lock; |
| 1568 | spin_lock_init(&viu_dev->slock); |
| 1569 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1570 | video_set_drvdata(viu_dev->vdev, viu_dev); |
| 1571 | |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1572 | mutex_lock(&viu_dev->lock); |
| 1573 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1574 | ret = video_register_device(viu_dev->vdev, VFL_TYPE_GRABBER, -1); |
| 1575 | if (ret < 0) { |
| 1576 | video_device_release(viu_dev->vdev); |
| 1577 | goto err_vdev; |
| 1578 | } |
| 1579 | |
| 1580 | /* enable VIU clock */ |
Gerhard Sittig | a5d7a6d | 2013-07-01 18:54:41 +0200 | [diff] [blame] | 1581 | clk = devm_clk_get(&op->dev, "viu_clk"); |
| 1582 | if (IS_ERR(clk)) { |
| 1583 | dev_err(&op->dev, "failed to lookup the clock!\n"); |
| 1584 | ret = PTR_ERR(clk); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1585 | goto err_clk; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1586 | } |
Gerhard Sittig | a5d7a6d | 2013-07-01 18:54:41 +0200 | [diff] [blame] | 1587 | ret = clk_prepare_enable(clk); |
| 1588 | if (ret) { |
| 1589 | dev_err(&op->dev, "failed to enable the clock!\n"); |
| 1590 | goto err_clk; |
| 1591 | } |
| 1592 | viu_dev->clk = clk; |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1593 | |
| 1594 | /* reset VIU module */ |
| 1595 | viu_reset(viu_dev->vr); |
| 1596 | |
| 1597 | /* install interrupt handler */ |
| 1598 | if (request_irq(viu_dev->irq, viu_intr, 0, "viu", (void *)viu_dev)) { |
| 1599 | dev_err(&op->dev, "Request VIU IRQ failed.\n"); |
| 1600 | ret = -ENODEV; |
| 1601 | goto err_irq; |
| 1602 | } |
| 1603 | |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1604 | mutex_unlock(&viu_dev->lock); |
| 1605 | |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1606 | dev_info(&op->dev, "Freescale VIU Video Capture Board\n"); |
| 1607 | return ret; |
| 1608 | |
| 1609 | err_irq: |
Gerhard Sittig | a5d7a6d | 2013-07-01 18:54:41 +0200 | [diff] [blame] | 1610 | clk_disable_unprepare(viu_dev->clk); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1611 | err_clk: |
| 1612 | video_unregister_device(viu_dev->vdev); |
| 1613 | err_vdev: |
Anatolij Gustschin | 2f97000 | 2011-02-19 17:33:18 -0300 | [diff] [blame] | 1614 | mutex_unlock(&viu_dev->lock); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1615 | i2c_put_adapter(ad); |
| 1616 | v4l2_device_unregister(&viu_dev->v4l2_dev); |
| 1617 | err: |
| 1618 | irq_dispose_mapping(viu_irq); |
| 1619 | return ret; |
| 1620 | } |
| 1621 | |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1622 | static int viu_of_remove(struct platform_device *op) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1623 | { |
| 1624 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1625 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1626 | struct v4l2_subdev *sdev = list_entry(v4l2_dev->subdevs.next, |
| 1627 | struct v4l2_subdev, list); |
| 1628 | struct i2c_client *client = v4l2_get_subdevdata(sdev); |
| 1629 | |
| 1630 | free_irq(dev->irq, (void *)dev); |
| 1631 | irq_dispose_mapping(dev->irq); |
| 1632 | |
Gerhard Sittig | a5d7a6d | 2013-07-01 18:54:41 +0200 | [diff] [blame] | 1633 | clk_disable_unprepare(dev->clk); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1634 | |
| 1635 | video_unregister_device(dev->vdev); |
| 1636 | i2c_put_adapter(client->adapter); |
| 1637 | v4l2_device_unregister(&dev->v4l2_dev); |
| 1638 | return 0; |
| 1639 | } |
| 1640 | |
| 1641 | #ifdef CONFIG_PM |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1642 | static int viu_suspend(struct platform_device *op, pm_message_t state) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1643 | { |
| 1644 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1645 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1646 | |
| 1647 | clk_disable(dev->clk); |
| 1648 | return 0; |
| 1649 | } |
| 1650 | |
Grant Likely | 2dc1158 | 2010-08-06 09:25:50 -0600 | [diff] [blame] | 1651 | static int viu_resume(struct platform_device *op) |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1652 | { |
| 1653 | struct v4l2_device *v4l2_dev = dev_get_drvdata(&op->dev); |
| 1654 | struct viu_dev *dev = container_of(v4l2_dev, struct viu_dev, v4l2_dev); |
| 1655 | |
| 1656 | clk_enable(dev->clk); |
| 1657 | return 0; |
| 1658 | } |
| 1659 | #endif |
| 1660 | |
| 1661 | /* |
| 1662 | * Initialization and module stuff |
| 1663 | */ |
| 1664 | static struct of_device_id mpc512x_viu_of_match[] = { |
| 1665 | { |
| 1666 | .compatible = "fsl,mpc5121-viu", |
| 1667 | }, |
| 1668 | {}, |
| 1669 | }; |
| 1670 | MODULE_DEVICE_TABLE(of, mpc512x_viu_of_match); |
| 1671 | |
Grant Likely | 1c48a5c | 2011-02-17 02:43:24 -0700 | [diff] [blame] | 1672 | static struct platform_driver viu_of_platform_driver = { |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1673 | .probe = viu_of_probe, |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1674 | .remove = viu_of_remove, |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1675 | #ifdef CONFIG_PM |
| 1676 | .suspend = viu_suspend, |
| 1677 | .resume = viu_resume, |
| 1678 | #endif |
| 1679 | .driver = { |
| 1680 | .name = DRV_NAME, |
| 1681 | .owner = THIS_MODULE, |
| 1682 | .of_match_table = mpc512x_viu_of_match, |
| 1683 | }, |
| 1684 | }; |
| 1685 | |
Axel Lin | 1d6629b | 2012-01-10 03:21:49 -0300 | [diff] [blame] | 1686 | module_platform_driver(viu_of_platform_driver); |
Anatolij Gustschin | 95c5d60 | 2010-07-02 10:10:09 -0300 | [diff] [blame] | 1687 | |
| 1688 | MODULE_DESCRIPTION("Freescale Video-In(VIU)"); |
| 1689 | MODULE_AUTHOR("Hongjun Chen"); |
| 1690 | MODULE_LICENSE("GPL"); |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 1691 | MODULE_VERSION(VIU_VERSION); |