linux/drivers/media/pci/cobalt/cobalt-v4l2.c
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   1/*
   2 *  cobalt V4L2 API
   3 *
   4 *  Derived from ivtv-ioctl.c and cx18-fileops.c
   5 *
   6 *  Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates.
   7 *  All rights reserved.
   8 *
   9 *  This program is free software; you may redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; version 2 of the License.
  12 *
  13 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  15 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  17 *  BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  18 *  ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19 *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20 *  SOFTWARE.
  21 */
  22
  23#include <linux/dma-mapping.h>
  24#include <linux/delay.h>
  25#include <linux/math64.h>
  26#include <linux/pci.h>
  27#include <linux/v4l2-dv-timings.h>
  28
  29#include <media/v4l2-ctrls.h>
  30#include <media/v4l2-event.h>
  31#include <media/v4l2-dv-timings.h>
  32#include <media/i2c/adv7604.h>
  33#include <media/i2c/adv7842.h>
  34
  35#include "cobalt-alsa.h"
  36#include "cobalt-cpld.h"
  37#include "cobalt-driver.h"
  38#include "cobalt-v4l2.h"
  39#include "cobalt-irq.h"
  40#include "cobalt-omnitek.h"
  41
  42static const struct v4l2_dv_timings cea1080p60 = V4L2_DV_BT_CEA_1920X1080P60;
  43
  44/* vb2 DMA streaming ops */
  45
  46static int cobalt_queue_setup(struct vb2_queue *q,
  47                        unsigned int *num_buffers, unsigned int *num_planes,
  48                        unsigned int sizes[], void *alloc_ctxs[])
  49{
  50        struct cobalt_stream *s = q->drv_priv;
  51        unsigned size = s->stride * s->height;
  52
  53        if (*num_buffers < 3)
  54                *num_buffers = 3;
  55        if (*num_buffers > NR_BUFS)
  56                *num_buffers = NR_BUFS;
  57        alloc_ctxs[0] = s->cobalt->alloc_ctx;
  58        if (*num_planes)
  59                return sizes[0] < size ? -EINVAL : 0;
  60        *num_planes = 1;
  61        sizes[0] = size;
  62        return 0;
  63}
  64
  65static int cobalt_buf_init(struct vb2_buffer *vb)
  66{
  67        struct cobalt_stream *s = vb->vb2_queue->drv_priv;
  68        struct cobalt *cobalt = s->cobalt;
  69        const size_t max_pages_per_line =
  70                (COBALT_MAX_WIDTH * COBALT_MAX_BPP) / PAGE_SIZE + 2;
  71        const size_t bytes =
  72                COBALT_MAX_HEIGHT * max_pages_per_line * 0x20;
  73        const size_t audio_bytes = ((1920 * 4) / PAGE_SIZE + 1) * 0x20;
  74        struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->index];
  75        struct sg_table *sg_desc = vb2_dma_sg_plane_desc(vb, 0);
  76        unsigned size;
  77        int ret;
  78
  79        size = s->stride * s->height;
  80        if (vb2_plane_size(vb, 0) < size) {
  81                cobalt_info("data will not fit into plane (%lu < %u)\n",
  82                                        vb2_plane_size(vb, 0), size);
  83                return -EINVAL;
  84        }
  85
  86        if (desc->virt == NULL) {
  87                desc->dev = &cobalt->pci_dev->dev;
  88                descriptor_list_allocate(desc,
  89                        s->is_audio ? audio_bytes : bytes);
  90                if (desc->virt == NULL)
  91                        return -ENOMEM;
  92        }
  93        ret = descriptor_list_create(cobalt, sg_desc->sgl,
  94                        !s->is_output, sg_desc->nents, size,
  95                        s->width * s->bpp, s->stride, desc);
  96        if (ret)
  97                descriptor_list_free(desc);
  98        return ret;
  99}
 100
 101static void cobalt_buf_cleanup(struct vb2_buffer *vb)
 102{
 103        struct cobalt_stream *s = vb->vb2_queue->drv_priv;
 104        struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->index];
 105
 106        descriptor_list_free(desc);
 107}
 108
 109static int cobalt_buf_prepare(struct vb2_buffer *vb)
 110{
 111        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 112        struct cobalt_stream *s = vb->vb2_queue->drv_priv;
 113
 114        vb2_set_plane_payload(vb, 0, s->stride * s->height);
 115        vbuf->field = V4L2_FIELD_NONE;
 116        return 0;
 117}
 118
 119static void chain_all_buffers(struct cobalt_stream *s)
 120{
 121        struct sg_dma_desc_info *desc[NR_BUFS];
 122        struct cobalt_buffer *cb;
 123        struct list_head *p;
 124        int i = 0;
 125
 126        list_for_each(p, &s->bufs) {
 127                cb = list_entry(p, struct cobalt_buffer, list);
 128                desc[i] = &s->dma_desc_info[cb->vb.vb2_buf.index];
 129                if (i > 0)
 130                        descriptor_list_chain(desc[i-1], desc[i]);
 131                i++;
 132        }
 133}
 134
 135static void cobalt_buf_queue(struct vb2_buffer *vb)
 136{
 137        struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 138        struct vb2_queue *q = vb->vb2_queue;
 139        struct cobalt_stream *s = q->drv_priv;
 140        struct cobalt_buffer *cb = to_cobalt_buffer(vbuf);
 141        struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->index];
 142        unsigned long flags;
 143
 144        /* Prepare new buffer */
 145        descriptor_list_loopback(desc);
 146        descriptor_list_interrupt_disable(desc);
 147
 148        spin_lock_irqsave(&s->irqlock, flags);
 149        list_add_tail(&cb->list, &s->bufs);
 150        chain_all_buffers(s);
 151        spin_unlock_irqrestore(&s->irqlock, flags);
 152}
 153
 154static void cobalt_enable_output(struct cobalt_stream *s)
 155{
 156        struct cobalt *cobalt = s->cobalt;
 157        struct v4l2_bt_timings *bt = &s->timings.bt;
 158        struct m00514_syncgen_flow_evcnt_regmap __iomem *vo =
 159                COBALT_TX_BASE(cobalt);
 160        unsigned fmt = s->pixfmt != V4L2_PIX_FMT_BGR32 ?
 161                        M00514_CONTROL_BITMAP_FORMAT_16_BPP_MSK : 0;
 162        struct v4l2_subdev_format sd_fmt = {
 163                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
 164        };
 165
 166        if (!cobalt_cpld_set_freq(cobalt, bt->pixelclock)) {
 167                cobalt_err("pixelclock out of range\n");
 168                return;
 169        }
 170
 171        sd_fmt.format.colorspace = s->colorspace;
 172        sd_fmt.format.xfer_func = s->xfer_func;
 173        sd_fmt.format.ycbcr_enc = s->ycbcr_enc;
 174        sd_fmt.format.quantization = s->quantization;
 175        sd_fmt.format.width = bt->width;
 176        sd_fmt.format.height = bt->height;
 177
 178        /* Set up FDMA packer */
 179        switch (s->pixfmt) {
 180        case V4L2_PIX_FMT_YUYV:
 181                sd_fmt.format.code = MEDIA_BUS_FMT_UYVY8_1X16;
 182                break;
 183        case V4L2_PIX_FMT_BGR32:
 184                sd_fmt.format.code = MEDIA_BUS_FMT_RGB888_1X24;
 185                break;
 186        }
 187        v4l2_subdev_call(s->sd, pad, set_fmt, NULL, &sd_fmt);
 188
 189        iowrite32(0, &vo->control);
 190        /* 1080p60 */
 191        iowrite32(bt->hsync, &vo->sync_generator_h_sync_length);
 192        iowrite32(bt->hbackporch, &vo->sync_generator_h_backporch_length);
 193        iowrite32(bt->width, &vo->sync_generator_h_active_length);
 194        iowrite32(bt->hfrontporch, &vo->sync_generator_h_frontporch_length);
 195        iowrite32(bt->vsync, &vo->sync_generator_v_sync_length);
 196        iowrite32(bt->vbackporch, &vo->sync_generator_v_backporch_length);
 197        iowrite32(bt->height, &vo->sync_generator_v_active_length);
 198        iowrite32(bt->vfrontporch, &vo->sync_generator_v_frontporch_length);
 199        iowrite32(0x9900c1, &vo->error_color);
 200
 201        iowrite32(M00514_CONTROL_BITMAP_SYNC_GENERATOR_LOAD_PARAM_MSK | fmt,
 202                  &vo->control);
 203        iowrite32(M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK | fmt, &vo->control);
 204        iowrite32(M00514_CONTROL_BITMAP_SYNC_GENERATOR_ENABLE_MSK |
 205                  M00514_CONTROL_BITMAP_FLOW_CTRL_OUTPUT_ENABLE_MSK |
 206                  fmt, &vo->control);
 207}
 208
 209static void cobalt_enable_input(struct cobalt_stream *s)
 210{
 211        struct cobalt *cobalt = s->cobalt;
 212        int ch = (int)s->video_channel;
 213        struct m00235_fdma_packer_regmap __iomem *packer;
 214        struct v4l2_subdev_format sd_fmt_yuyv = {
 215                .pad = s->pad_source,
 216                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
 217                .format.code = MEDIA_BUS_FMT_YUYV8_1X16,
 218        };
 219        struct v4l2_subdev_format sd_fmt_rgb = {
 220                .pad = s->pad_source,
 221                .which = V4L2_SUBDEV_FORMAT_ACTIVE,
 222                .format.code = MEDIA_BUS_FMT_RGB888_1X24,
 223        };
 224
 225        cobalt_dbg(1, "video_channel %d (%s, %s)\n",
 226                   s->video_channel,
 227                   s->input == 0 ? "hdmi" : "generator",
 228                   "YUYV");
 229
 230        packer = COBALT_CVI_PACKER(cobalt, ch);
 231
 232        /* Set up FDMA packer */
 233        switch (s->pixfmt) {
 234        case V4L2_PIX_FMT_YUYV:
 235                iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK |
 236                          (1 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST),
 237                          &packer->control);
 238                v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
 239                                 &sd_fmt_yuyv);
 240                break;
 241        case V4L2_PIX_FMT_RGB24:
 242                iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK |
 243                          (2 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST),
 244                          &packer->control);
 245                v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
 246                                 &sd_fmt_rgb);
 247                break;
 248        case V4L2_PIX_FMT_BGR32:
 249                iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK |
 250                          M00235_CONTROL_BITMAP_ENDIAN_FORMAT_MSK |
 251                          (3 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST),
 252                          &packer->control);
 253                v4l2_subdev_call(s->sd, pad, set_fmt, NULL,
 254                                 &sd_fmt_rgb);
 255                break;
 256        }
 257}
 258
 259static void cobalt_dma_start_streaming(struct cobalt_stream *s)
 260{
 261        struct cobalt *cobalt = s->cobalt;
 262        int rx = s->video_channel;
 263        struct m00460_evcnt_regmap __iomem *evcnt =
 264                COBALT_CVI_EVCNT(cobalt, rx);
 265        struct cobalt_buffer *cb;
 266        unsigned long flags;
 267
 268        spin_lock_irqsave(&s->irqlock, flags);
 269        if (!s->is_output) {
 270                iowrite32(M00460_CONTROL_BITMAP_CLEAR_MSK, &evcnt->control);
 271                iowrite32(M00460_CONTROL_BITMAP_ENABLE_MSK, &evcnt->control);
 272        } else {
 273                struct m00514_syncgen_flow_evcnt_regmap __iomem *vo =
 274                        COBALT_TX_BASE(cobalt);
 275                u32 ctrl = ioread32(&vo->control);
 276
 277                ctrl &= ~(M00514_CONTROL_BITMAP_EVCNT_ENABLE_MSK |
 278                          M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK);
 279                iowrite32(ctrl | M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK,
 280                          &vo->control);
 281                iowrite32(ctrl | M00514_CONTROL_BITMAP_EVCNT_ENABLE_MSK,
 282                          &vo->control);
 283        }
 284        cb = list_first_entry(&s->bufs, struct cobalt_buffer, list);
 285        omni_sg_dma_start(s, &s->dma_desc_info[cb->vb.vb2_buf.index]);
 286        spin_unlock_irqrestore(&s->irqlock, flags);
 287}
 288
 289static int cobalt_start_streaming(struct vb2_queue *q, unsigned int count)
 290{
 291        struct cobalt_stream *s = q->drv_priv;
 292        struct cobalt *cobalt = s->cobalt;
 293        struct m00233_video_measure_regmap __iomem *vmr;
 294        struct m00473_freewheel_regmap __iomem *fw;
 295        struct m00479_clk_loss_detector_regmap __iomem *clkloss;
 296        int rx = s->video_channel;
 297        struct m00389_cvi_regmap __iomem *cvi = COBALT_CVI(cobalt, rx);
 298        struct m00460_evcnt_regmap __iomem *evcnt = COBALT_CVI_EVCNT(cobalt, rx);
 299        struct v4l2_bt_timings *bt = &s->timings.bt;
 300        u64 tot_size;
 301        u32 clk_freq;
 302
 303        if (s->is_audio)
 304                goto done;
 305        if (s->is_output) {
 306                s->unstable_frame = false;
 307                cobalt_enable_output(s);
 308                goto done;
 309        }
 310
 311        cobalt_enable_input(s);
 312
 313        fw = COBALT_CVI_FREEWHEEL(cobalt, rx);
 314        vmr = COBALT_CVI_VMR(cobalt, rx);
 315        clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx);
 316
 317        iowrite32(M00460_CONTROL_BITMAP_CLEAR_MSK, &evcnt->control);
 318        iowrite32(M00460_CONTROL_BITMAP_ENABLE_MSK, &evcnt->control);
 319        iowrite32(bt->width, &cvi->frame_width);
 320        iowrite32(bt->height, &cvi->frame_height);
 321        tot_size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt);
 322        iowrite32(div_u64((u64)V4L2_DV_BT_FRAME_WIDTH(bt) * COBALT_CLK * 4,
 323                          bt->pixelclock), &vmr->hsync_timeout_val);
 324        iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control);
 325        clk_freq = ioread32(&fw->clk_freq);
 326        iowrite32(clk_freq / 1000000, &clkloss->ref_clk_cnt_val);
 327        /* The lower bound for the clock frequency is 0.5% lower as is
 328         * allowed by the spec */
 329        iowrite32(div_u64(bt->pixelclock * 995, 1000000000),
 330                  &clkloss->test_clk_cnt_val);
 331        /* will be enabled after the first frame has been received */
 332        iowrite32(bt->width * bt->height, &fw->active_length);
 333        iowrite32(div_u64((u64)clk_freq * tot_size, bt->pixelclock),
 334                  &fw->total_length);
 335        iowrite32(M00233_IRQ_TRIGGERS_BITMAP_VACTIVE_AREA_MSK |
 336                  M00233_IRQ_TRIGGERS_BITMAP_HACTIVE_AREA_MSK,
 337                  &vmr->irq_triggers);
 338        iowrite32(0, &cvi->control);
 339        iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control);
 340
 341        iowrite32(0xff, &fw->output_color);
 342        iowrite32(M00479_CTRL_BITMAP_ENABLE_MSK, &clkloss->ctrl);
 343        iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK |
 344                  M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK, &fw->ctrl);
 345        s->unstable_frame = true;
 346        s->enable_freewheel = false;
 347        s->enable_cvi = false;
 348        s->skip_first_frames = 0;
 349
 350done:
 351        s->sequence = 0;
 352        cobalt_dma_start_streaming(s);
 353        return 0;
 354}
 355
 356static void cobalt_dma_stop_streaming(struct cobalt_stream *s)
 357{
 358        struct cobalt *cobalt = s->cobalt;
 359        struct sg_dma_desc_info *desc;
 360        struct cobalt_buffer *cb;
 361        struct list_head *p;
 362        unsigned long flags;
 363        int timeout_msec = 100;
 364        int rx = s->video_channel;
 365        struct m00460_evcnt_regmap __iomem *evcnt =
 366                COBALT_CVI_EVCNT(cobalt, rx);
 367
 368        if (!s->is_output) {
 369                iowrite32(0, &evcnt->control);
 370        } else if (!s->is_audio) {
 371                struct m00514_syncgen_flow_evcnt_regmap __iomem *vo =
 372                        COBALT_TX_BASE(cobalt);
 373
 374                iowrite32(M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK, &vo->control);
 375                iowrite32(0, &vo->control);
 376        }
 377
 378        /* Try to stop the DMA engine gracefully */
 379        spin_lock_irqsave(&s->irqlock, flags);
 380        list_for_each(p, &s->bufs) {
 381                cb = list_entry(p, struct cobalt_buffer, list);
 382                desc = &s->dma_desc_info[cb->vb.vb2_buf.index];
 383                /* Stop DMA after this descriptor chain */
 384                descriptor_list_end_of_chain(desc);
 385        }
 386        spin_unlock_irqrestore(&s->irqlock, flags);
 387
 388        /* Wait 100 milisecond for DMA to finish, abort on timeout. */
 389        if (!wait_event_timeout(s->q.done_wq, is_dma_done(s),
 390                                msecs_to_jiffies(timeout_msec))) {
 391                omni_sg_dma_abort_channel(s);
 392                pr_warn("aborted\n");
 393        }
 394        cobalt_write_bar0(cobalt, DMA_INTERRUPT_STATUS_REG,
 395                        1 << s->dma_channel);
 396}
 397
 398static void cobalt_stop_streaming(struct vb2_queue *q)
 399{
 400        struct cobalt_stream *s = q->drv_priv;
 401        struct cobalt *cobalt = s->cobalt;
 402        int rx = s->video_channel;
 403        struct m00233_video_measure_regmap __iomem *vmr;
 404        struct m00473_freewheel_regmap __iomem *fw;
 405        struct m00479_clk_loss_detector_regmap __iomem *clkloss;
 406        struct cobalt_buffer *cb;
 407        struct list_head *p, *safe;
 408        unsigned long flags;
 409
 410        cobalt_dma_stop_streaming(s);
 411
 412        /* Return all buffers to user space */
 413        spin_lock_irqsave(&s->irqlock, flags);
 414        list_for_each_safe(p, safe, &s->bufs) {
 415                cb = list_entry(p, struct cobalt_buffer, list);
 416                list_del(&cb->list);
 417                vb2_buffer_done(&cb->vb.vb2_buf, VB2_BUF_STATE_ERROR);
 418        }
 419        spin_unlock_irqrestore(&s->irqlock, flags);
 420
 421        if (s->is_audio || s->is_output)
 422                return;
 423
 424        fw = COBALT_CVI_FREEWHEEL(cobalt, rx);
 425        vmr = COBALT_CVI_VMR(cobalt, rx);
 426        clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx);
 427        iowrite32(0, &vmr->control);
 428        iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control);
 429        iowrite32(0, &fw->ctrl);
 430        iowrite32(0, &clkloss->ctrl);
 431}
 432
 433static const struct vb2_ops cobalt_qops = {
 434        .queue_setup = cobalt_queue_setup,
 435        .buf_init = cobalt_buf_init,
 436        .buf_cleanup = cobalt_buf_cleanup,
 437        .buf_prepare = cobalt_buf_prepare,
 438        .buf_queue = cobalt_buf_queue,
 439        .start_streaming = cobalt_start_streaming,
 440        .stop_streaming = cobalt_stop_streaming,
 441        .wait_prepare = vb2_ops_wait_prepare,
 442        .wait_finish = vb2_ops_wait_finish,
 443};
 444
 445/* V4L2 ioctls */
 446
 447#ifdef CONFIG_VIDEO_ADV_DEBUG
 448static int cobalt_cobaltc(struct cobalt *cobalt, unsigned int cmd, void *arg)
 449{
 450        struct v4l2_dbg_register *regs = arg;
 451        void __iomem *adrs = cobalt->bar1 + regs->reg;
 452
 453        cobalt_info("cobalt_cobaltc: adrs = %p\n", adrs);
 454
 455        if (!capable(CAP_SYS_ADMIN))
 456                return -EPERM;
 457
 458        regs->size = 4;
 459        if (cmd == VIDIOC_DBG_S_REGISTER)
 460                iowrite32(regs->val, adrs);
 461        else
 462                regs->val = ioread32(adrs);
 463        return 0;
 464}
 465
 466static int cobalt_g_register(struct file *file, void *priv_fh,
 467                struct v4l2_dbg_register *reg)
 468{
 469        struct cobalt_stream *s = video_drvdata(file);
 470        struct cobalt *cobalt = s->cobalt;
 471
 472        return cobalt_cobaltc(cobalt, VIDIOC_DBG_G_REGISTER, reg);
 473}
 474
 475static int cobalt_s_register(struct file *file, void *priv_fh,
 476                const struct v4l2_dbg_register *reg)
 477{
 478        struct cobalt_stream *s = video_drvdata(file);
 479        struct cobalt *cobalt = s->cobalt;
 480
 481        return cobalt_cobaltc(cobalt, VIDIOC_DBG_S_REGISTER,
 482                        (struct v4l2_dbg_register *)reg);
 483}
 484#endif
 485
 486static int cobalt_querycap(struct file *file, void *priv_fh,
 487                                struct v4l2_capability *vcap)
 488{
 489        struct cobalt_stream *s = video_drvdata(file);
 490        struct cobalt *cobalt = s->cobalt;
 491
 492        strlcpy(vcap->driver, "cobalt", sizeof(vcap->driver));
 493        strlcpy(vcap->card, "cobalt", sizeof(vcap->card));
 494        snprintf(vcap->bus_info, sizeof(vcap->bus_info),
 495                 "PCIe:%s", pci_name(cobalt->pci_dev));
 496        vcap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_READWRITE;
 497        if (s->is_output)
 498                vcap->device_caps |= V4L2_CAP_VIDEO_OUTPUT;
 499        else
 500                vcap->device_caps |= V4L2_CAP_VIDEO_CAPTURE;
 501        vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS |
 502                V4L2_CAP_VIDEO_CAPTURE;
 503        if (cobalt->have_hsma_tx)
 504                vcap->capabilities |= V4L2_CAP_VIDEO_OUTPUT;
 505        return 0;
 506}
 507
 508static void cobalt_video_input_status_show(struct cobalt_stream *s)
 509{
 510        struct m00389_cvi_regmap __iomem *cvi;
 511        struct m00233_video_measure_regmap __iomem *vmr;
 512        struct m00473_freewheel_regmap __iomem *fw;
 513        struct m00479_clk_loss_detector_regmap __iomem *clkloss;
 514        struct m00235_fdma_packer_regmap __iomem *packer;
 515        int rx = s->video_channel;
 516        struct cobalt *cobalt = s->cobalt;
 517        u32 cvi_ctrl, cvi_stat;
 518        u32 vmr_ctrl, vmr_stat;
 519
 520        cvi = COBALT_CVI(cobalt, rx);
 521        vmr = COBALT_CVI_VMR(cobalt, rx);
 522        fw = COBALT_CVI_FREEWHEEL(cobalt, rx);
 523        clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx);
 524        packer = COBALT_CVI_PACKER(cobalt, rx);
 525        cvi_ctrl = ioread32(&cvi->control);
 526        cvi_stat = ioread32(&cvi->status);
 527        vmr_ctrl = ioread32(&vmr->control);
 528        vmr_stat = ioread32(&vmr->control);
 529        cobalt_info("rx%d: cvi resolution: %dx%d\n", rx,
 530                    ioread32(&cvi->frame_width), ioread32(&cvi->frame_height));
 531        cobalt_info("rx%d: cvi control: %s%s%s\n", rx,
 532                (cvi_ctrl & M00389_CONTROL_BITMAP_ENABLE_MSK) ?
 533                        "enable " : "disable ",
 534                (cvi_ctrl & M00389_CONTROL_BITMAP_HSYNC_POLARITY_LOW_MSK) ?
 535                        "HSync- " : "HSync+ ",
 536                (cvi_ctrl & M00389_CONTROL_BITMAP_VSYNC_POLARITY_LOW_MSK) ?
 537                        "VSync- " : "VSync+ ");
 538        cobalt_info("rx%d: cvi status: %s%s\n", rx,
 539                (cvi_stat & M00389_STATUS_BITMAP_LOCK_MSK) ?
 540                        "lock " : "no-lock ",
 541                (cvi_stat & M00389_STATUS_BITMAP_ERROR_MSK) ?
 542                        "error " : "no-error ");
 543
 544        cobalt_info("rx%d: Measurements: %s%s%s%s%s%s%s\n", rx,
 545                (vmr_ctrl & M00233_CONTROL_BITMAP_HSYNC_POLARITY_LOW_MSK) ?
 546                        "HSync- " : "HSync+ ",
 547                (vmr_ctrl & M00233_CONTROL_BITMAP_VSYNC_POLARITY_LOW_MSK) ?
 548                        "VSync- " : "VSync+ ",
 549                (vmr_ctrl & M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK) ?
 550                        "enabled " : "disabled ",
 551                (vmr_ctrl & M00233_CONTROL_BITMAP_ENABLE_INTERRUPT_MSK) ?
 552                        "irq-enabled " : "irq-disabled ",
 553                (vmr_ctrl & M00233_CONTROL_BITMAP_UPDATE_ON_HSYNC_MSK) ?
 554                        "update-on-hsync " : "",
 555                (vmr_stat & M00233_STATUS_BITMAP_HSYNC_TIMEOUT_MSK) ?
 556                        "hsync-timeout " : "",
 557                (vmr_stat & M00233_STATUS_BITMAP_INIT_DONE_MSK) ?
 558                        "init-done" : "");
 559        cobalt_info("rx%d: irq_status: 0x%02x irq_triggers: 0x%02x\n", rx,
 560                        ioread32(&vmr->irq_status) & 0xff,
 561                        ioread32(&vmr->irq_triggers) & 0xff);
 562        cobalt_info("rx%d: vsync: %d\n", rx, ioread32(&vmr->vsync_time));
 563        cobalt_info("rx%d: vbp: %d\n", rx, ioread32(&vmr->vback_porch));
 564        cobalt_info("rx%d: vact: %d\n", rx, ioread32(&vmr->vactive_area));
 565        cobalt_info("rx%d: vfb: %d\n", rx, ioread32(&vmr->vfront_porch));
 566        cobalt_info("rx%d: hsync: %d\n", rx, ioread32(&vmr->hsync_time));
 567        cobalt_info("rx%d: hbp: %d\n", rx, ioread32(&vmr->hback_porch));
 568        cobalt_info("rx%d: hact: %d\n", rx, ioread32(&vmr->hactive_area));
 569        cobalt_info("rx%d: hfb: %d\n", rx, ioread32(&vmr->hfront_porch));
 570        cobalt_info("rx%d: Freewheeling: %s%s%s\n", rx,
 571                (ioread32(&fw->ctrl) & M00473_CTRL_BITMAP_ENABLE_MSK) ?
 572                        "enabled " : "disabled ",
 573                (ioread32(&fw->ctrl) & M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK) ?
 574                        "forced " : "",
 575                (ioread32(&fw->status) & M00473_STATUS_BITMAP_FREEWHEEL_MODE_MSK) ?
 576                        "freewheeling " : "video-passthrough ");
 577        iowrite32(0xff, &vmr->irq_status);
 578        cobalt_info("rx%d: Clock Loss Detection: %s%s\n", rx,
 579                (ioread32(&clkloss->ctrl) & M00479_CTRL_BITMAP_ENABLE_MSK) ?
 580                        "enabled " : "disabled ",
 581                (ioread32(&clkloss->status) & M00479_STATUS_BITMAP_CLOCK_MISSING_MSK) ?
 582                        "clock-missing " : "found-clock ");
 583        cobalt_info("rx%d: Packer: %x\n", rx, ioread32(&packer->control));
 584}
 585
 586static int cobalt_log_status(struct file *file, void *priv_fh)
 587{
 588        struct cobalt_stream *s = video_drvdata(file);
 589        struct cobalt *cobalt = s->cobalt;
 590        struct m00514_syncgen_flow_evcnt_regmap __iomem *vo =
 591                COBALT_TX_BASE(cobalt);
 592        u8 stat;
 593
 594        cobalt_info("%s", cobalt->hdl_info);
 595        cobalt_info("sysctrl: %08x, sysstat: %08x\n",
 596                        cobalt_g_sysctrl(cobalt),
 597                        cobalt_g_sysstat(cobalt));
 598        cobalt_info("dma channel: %d, video channel: %d\n",
 599                        s->dma_channel, s->video_channel);
 600        cobalt_pcie_status_show(cobalt);
 601        cobalt_cpld_status(cobalt);
 602        cobalt_irq_log_status(cobalt);
 603        v4l2_subdev_call(s->sd, core, log_status);
 604        if (!s->is_output) {
 605                cobalt_video_input_status_show(s);
 606                return 0;
 607        }
 608
 609        stat = ioread32(&vo->rd_status);
 610
 611        cobalt_info("tx: status: %s%s\n",
 612                (stat & M00514_RD_STATUS_BITMAP_FLOW_CTRL_NO_DATA_ERROR_MSK) ?
 613                        "no_data " : "",
 614                (stat & M00514_RD_STATUS_BITMAP_READY_BUFFER_FULL_MSK) ?
 615                        "ready_buffer_full " : "");
 616        cobalt_info("tx: evcnt: %d\n", ioread32(&vo->rd_evcnt_count));
 617        return 0;
 618}
 619
 620static int cobalt_enum_dv_timings(struct file *file, void *priv_fh,
 621                                    struct v4l2_enum_dv_timings *timings)
 622{
 623        struct cobalt_stream *s = video_drvdata(file);
 624
 625        if (s->input == 1) {
 626                if (timings->index)
 627                        return -EINVAL;
 628                memset(timings->reserved, 0, sizeof(timings->reserved));
 629                timings->timings = cea1080p60;
 630                return 0;
 631        }
 632        timings->pad = 0;
 633        return v4l2_subdev_call(s->sd,
 634                        pad, enum_dv_timings, timings);
 635}
 636
 637static int cobalt_s_dv_timings(struct file *file, void *priv_fh,
 638                                    struct v4l2_dv_timings *timings)
 639{
 640        struct cobalt_stream *s = video_drvdata(file);
 641        int err;
 642
 643        if (s->input == 1) {
 644                *timings = cea1080p60;
 645                return 0;
 646        }
 647
 648        if (v4l2_match_dv_timings(timings, &s->timings, 0, false))
 649                return 0;
 650
 651        if (vb2_is_busy(&s->q))
 652                return -EBUSY;
 653
 654        err = v4l2_subdev_call(s->sd,
 655                        video, s_dv_timings, timings);
 656        if (!err) {
 657                s->timings = *timings;
 658                s->width = timings->bt.width;
 659                s->height = timings->bt.height;
 660                s->stride = timings->bt.width * s->bpp;
 661        }
 662        return err;
 663}
 664
 665static int cobalt_g_dv_timings(struct file *file, void *priv_fh,
 666                                    struct v4l2_dv_timings *timings)
 667{
 668        struct cobalt_stream *s = video_drvdata(file);
 669
 670        if (s->input == 1) {
 671                *timings = cea1080p60;
 672                return 0;
 673        }
 674        return v4l2_subdev_call(s->sd,
 675                        video, g_dv_timings, timings);
 676}
 677
 678static int cobalt_query_dv_timings(struct file *file, void *priv_fh,
 679                                    struct v4l2_dv_timings *timings)
 680{
 681        struct cobalt_stream *s = video_drvdata(file);
 682
 683        if (s->input == 1) {
 684                *timings = cea1080p60;
 685                return 0;
 686        }
 687        return v4l2_subdev_call(s->sd,
 688                        video, query_dv_timings, timings);
 689}
 690
 691static int cobalt_dv_timings_cap(struct file *file, void *priv_fh,
 692                                    struct v4l2_dv_timings_cap *cap)
 693{
 694        struct cobalt_stream *s = video_drvdata(file);
 695
 696        cap->pad = 0;
 697        return v4l2_subdev_call(s->sd,
 698                        pad, dv_timings_cap, cap);
 699}
 700
 701static int cobalt_enum_fmt_vid_cap(struct file *file, void *priv_fh,
 702                struct v4l2_fmtdesc *f)
 703{
 704        switch (f->index) {
 705        case 0:
 706                strlcpy(f->description, "YUV 4:2:2", sizeof(f->description));
 707                f->pixelformat = V4L2_PIX_FMT_YUYV;
 708                break;
 709        case 1:
 710                strlcpy(f->description, "RGB24", sizeof(f->description));
 711                f->pixelformat = V4L2_PIX_FMT_RGB24;
 712                break;
 713        case 2:
 714                strlcpy(f->description, "RGB32", sizeof(f->description));
 715                f->pixelformat = V4L2_PIX_FMT_BGR32;
 716                break;
 717        default:
 718                return -EINVAL;
 719        }
 720
 721        return 0;
 722}
 723
 724static int cobalt_g_fmt_vid_cap(struct file *file, void *priv_fh,
 725                struct v4l2_format *f)
 726{
 727        struct cobalt_stream *s = video_drvdata(file);
 728        struct v4l2_pix_format *pix = &f->fmt.pix;
 729        struct v4l2_subdev_format sd_fmt;
 730
 731        pix->width = s->width;
 732        pix->height = s->height;
 733        pix->bytesperline = s->stride;
 734        pix->field = V4L2_FIELD_NONE;
 735
 736        if (s->input == 1) {
 737                pix->colorspace = V4L2_COLORSPACE_SRGB;
 738        } else {
 739                sd_fmt.pad = s->pad_source;
 740                sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 741                v4l2_subdev_call(s->sd, pad, get_fmt, NULL, &sd_fmt);
 742                v4l2_fill_pix_format(pix, &sd_fmt.format);
 743        }
 744
 745        pix->pixelformat = s->pixfmt;
 746        pix->sizeimage = pix->bytesperline * pix->height;
 747
 748        return 0;
 749}
 750
 751static int cobalt_try_fmt_vid_cap(struct file *file, void *priv_fh,
 752                struct v4l2_format *f)
 753{
 754        struct cobalt_stream *s = video_drvdata(file);
 755        struct v4l2_pix_format *pix = &f->fmt.pix;
 756        struct v4l2_subdev_format sd_fmt;
 757
 758        /* Check for min (QCIF) and max (Full HD) size */
 759        if ((pix->width < 176) || (pix->height < 144)) {
 760                pix->width = 176;
 761                pix->height = 144;
 762        }
 763
 764        if ((pix->width > 1920) || (pix->height > 1080)) {
 765                pix->width = 1920;
 766                pix->height = 1080;
 767        }
 768
 769        /* Make width multiple of 4 */
 770        pix->width &= ~0x3;
 771
 772        /* Make height multiple of 2 */
 773        pix->height &= ~0x1;
 774
 775        if (s->input == 1) {
 776                /* Generator => fixed format only */
 777                pix->width = 1920;
 778                pix->height = 1080;
 779                pix->colorspace = V4L2_COLORSPACE_SRGB;
 780        } else {
 781                sd_fmt.pad = s->pad_source;
 782                sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 783                v4l2_subdev_call(s->sd, pad, get_fmt, NULL, &sd_fmt);
 784                v4l2_fill_pix_format(pix, &sd_fmt.format);
 785        }
 786
 787        switch (pix->pixelformat) {
 788        case V4L2_PIX_FMT_YUYV:
 789        default:
 790                pix->bytesperline = max(pix->bytesperline & ~0x3,
 791                                pix->width * COBALT_BYTES_PER_PIXEL_YUYV);
 792                pix->pixelformat = V4L2_PIX_FMT_YUYV;
 793                break;
 794        case V4L2_PIX_FMT_RGB24:
 795                pix->bytesperline = max(pix->bytesperline & ~0x3,
 796                                pix->width * COBALT_BYTES_PER_PIXEL_RGB24);
 797                break;
 798        case V4L2_PIX_FMT_BGR32:
 799                pix->bytesperline = max(pix->bytesperline & ~0x3,
 800                                pix->width * COBALT_BYTES_PER_PIXEL_RGB32);
 801                break;
 802        }
 803
 804        pix->sizeimage = pix->bytesperline * pix->height;
 805        pix->field = V4L2_FIELD_NONE;
 806        pix->priv = 0;
 807
 808        return 0;
 809}
 810
 811static int cobalt_s_fmt_vid_cap(struct file *file, void *priv_fh,
 812                struct v4l2_format *f)
 813{
 814        struct cobalt_stream *s = video_drvdata(file);
 815        struct v4l2_pix_format *pix = &f->fmt.pix;
 816
 817        if (vb2_is_busy(&s->q))
 818                return -EBUSY;
 819
 820        if (cobalt_try_fmt_vid_cap(file, priv_fh, f))
 821                return -EINVAL;
 822
 823        s->width = pix->width;
 824        s->height = pix->height;
 825        s->stride = pix->bytesperline;
 826        switch (pix->pixelformat) {
 827        case V4L2_PIX_FMT_YUYV:
 828                s->bpp = COBALT_BYTES_PER_PIXEL_YUYV;
 829                break;
 830        case V4L2_PIX_FMT_RGB24:
 831                s->bpp = COBALT_BYTES_PER_PIXEL_RGB24;
 832                break;
 833        case V4L2_PIX_FMT_BGR32:
 834                s->bpp = COBALT_BYTES_PER_PIXEL_RGB32;
 835                break;
 836        default:
 837                return -EINVAL;
 838        }
 839        s->pixfmt = pix->pixelformat;
 840        cobalt_enable_input(s);
 841
 842        return 0;
 843}
 844
 845static int cobalt_try_fmt_vid_out(struct file *file, void *priv_fh,
 846                struct v4l2_format *f)
 847{
 848        struct v4l2_pix_format *pix = &f->fmt.pix;
 849
 850        /* Check for min (QCIF) and max (Full HD) size */
 851        if ((pix->width < 176) || (pix->height < 144)) {
 852                pix->width = 176;
 853                pix->height = 144;
 854        }
 855
 856        if ((pix->width > 1920) || (pix->height > 1080)) {
 857                pix->width = 1920;
 858                pix->height = 1080;
 859        }
 860
 861        /* Make width multiple of 4 */
 862        pix->width &= ~0x3;
 863
 864        /* Make height multiple of 2 */
 865        pix->height &= ~0x1;
 866
 867        switch (pix->pixelformat) {
 868        case V4L2_PIX_FMT_YUYV:
 869        default:
 870                pix->bytesperline = max(pix->bytesperline & ~0x3,
 871                                pix->width * COBALT_BYTES_PER_PIXEL_YUYV);
 872                pix->pixelformat = V4L2_PIX_FMT_YUYV;
 873                break;
 874        case V4L2_PIX_FMT_BGR32:
 875                pix->bytesperline = max(pix->bytesperline & ~0x3,
 876                                pix->width * COBALT_BYTES_PER_PIXEL_RGB32);
 877                break;
 878        }
 879
 880        pix->sizeimage = pix->bytesperline * pix->height;
 881        pix->field = V4L2_FIELD_NONE;
 882
 883        return 0;
 884}
 885
 886static int cobalt_g_fmt_vid_out(struct file *file, void *priv_fh,
 887                struct v4l2_format *f)
 888{
 889        struct cobalt_stream *s = video_drvdata(file);
 890        struct v4l2_pix_format *pix = &f->fmt.pix;
 891
 892        pix->width = s->width;
 893        pix->height = s->height;
 894        pix->bytesperline = s->stride;
 895        pix->field = V4L2_FIELD_NONE;
 896        pix->pixelformat = s->pixfmt;
 897        pix->colorspace = s->colorspace;
 898        pix->xfer_func = s->xfer_func;
 899        pix->ycbcr_enc = s->ycbcr_enc;
 900        pix->quantization = s->quantization;
 901        pix->sizeimage = pix->bytesperline * pix->height;
 902
 903        return 0;
 904}
 905
 906static int cobalt_enum_fmt_vid_out(struct file *file, void *priv_fh,
 907                struct v4l2_fmtdesc *f)
 908{
 909        switch (f->index) {
 910        case 0:
 911                strlcpy(f->description, "YUV 4:2:2", sizeof(f->description));
 912                f->pixelformat = V4L2_PIX_FMT_YUYV;
 913                break;
 914        case 1:
 915                strlcpy(f->description, "RGB32", sizeof(f->description));
 916                f->pixelformat = V4L2_PIX_FMT_BGR32;
 917                break;
 918        default:
 919                return -EINVAL;
 920        }
 921
 922        return 0;
 923}
 924
 925static int cobalt_s_fmt_vid_out(struct file *file, void *priv_fh,
 926                struct v4l2_format *f)
 927{
 928        struct cobalt_stream *s = video_drvdata(file);
 929        struct v4l2_pix_format *pix = &f->fmt.pix;
 930        struct v4l2_subdev_format sd_fmt = { 0 };
 931        u32 code;
 932
 933        if (cobalt_try_fmt_vid_out(file, priv_fh, f))
 934                return -EINVAL;
 935
 936        if (vb2_is_busy(&s->q) && (pix->pixelformat != s->pixfmt ||
 937            pix->width != s->width || pix->height != s->height ||
 938            pix->bytesperline != s->stride))
 939                return -EBUSY;
 940
 941        switch (pix->pixelformat) {
 942        case V4L2_PIX_FMT_YUYV:
 943                s->bpp = COBALT_BYTES_PER_PIXEL_YUYV;
 944                code = MEDIA_BUS_FMT_UYVY8_1X16;
 945                break;
 946        case V4L2_PIX_FMT_BGR32:
 947                s->bpp = COBALT_BYTES_PER_PIXEL_RGB32;
 948                code = MEDIA_BUS_FMT_RGB888_1X24;
 949                break;
 950        default:
 951                return -EINVAL;
 952        }
 953        s->width = pix->width;
 954        s->height = pix->height;
 955        s->stride = pix->bytesperline;
 956        s->pixfmt = pix->pixelformat;
 957        s->colorspace = pix->colorspace;
 958        s->xfer_func = pix->xfer_func;
 959        s->ycbcr_enc = pix->ycbcr_enc;
 960        s->quantization = pix->quantization;
 961        sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 962        v4l2_fill_mbus_format(&sd_fmt.format, pix, code);
 963        v4l2_subdev_call(s->sd, pad, set_fmt, NULL, &sd_fmt);
 964        return 0;
 965}
 966
 967static int cobalt_enum_input(struct file *file, void *priv_fh,
 968                                 struct v4l2_input *inp)
 969{
 970        struct cobalt_stream *s = video_drvdata(file);
 971
 972        if (inp->index > 1)
 973                return -EINVAL;
 974        if (inp->index == 0)
 975                snprintf(inp->name, sizeof(inp->name),
 976                                "HDMI-%d", s->video_channel);
 977        else
 978                snprintf(inp->name, sizeof(inp->name),
 979                                "Generator-%d", s->video_channel);
 980        inp->type = V4L2_INPUT_TYPE_CAMERA;
 981        inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
 982        if (inp->index == 1)
 983                return 0;
 984        return v4l2_subdev_call(s->sd,
 985                        video, g_input_status, &inp->status);
 986}
 987
 988static int cobalt_g_input(struct file *file, void *priv_fh, unsigned int *i)
 989{
 990        struct cobalt_stream *s = video_drvdata(file);
 991
 992        *i = s->input;
 993        return 0;
 994}
 995
 996static int cobalt_s_input(struct file *file, void *priv_fh, unsigned int i)
 997{
 998        struct cobalt_stream *s = video_drvdata(file);
 999
1000        if (i >= 2)
1001                return -EINVAL;
1002        if (vb2_is_busy(&s->q))
1003                return -EBUSY;
1004        s->input = i;
1005
1006        cobalt_enable_input(s);
1007
1008        if (s->input == 1) /* Test Pattern Generator */
1009                return 0;
1010
1011        return v4l2_subdev_call(s->sd, video, s_routing,
1012                        ADV76XX_PAD_HDMI_PORT_A, 0, 0);
1013}
1014
1015static int cobalt_enum_output(struct file *file, void *priv_fh,
1016                                 struct v4l2_output *out)
1017{
1018        if (out->index)
1019                return -EINVAL;
1020        snprintf(out->name, sizeof(out->name), "HDMI-%d", out->index);
1021        out->type = V4L2_OUTPUT_TYPE_ANALOG;
1022        out->capabilities = V4L2_OUT_CAP_DV_TIMINGS;
1023        return 0;
1024}
1025
1026static int cobalt_g_output(struct file *file, void *priv_fh, unsigned int *i)
1027{
1028        *i = 0;
1029        return 0;
1030}
1031
1032static int cobalt_s_output(struct file *file, void *priv_fh, unsigned int i)
1033{
1034        return i ? -EINVAL : 0;
1035}
1036
1037static int cobalt_g_edid(struct file *file, void *fh, struct v4l2_edid *edid)
1038{
1039        struct cobalt_stream *s = video_drvdata(file);
1040        u32 pad = edid->pad;
1041        int ret;
1042
1043        if (edid->pad >= (s->is_output ? 1 : 2))
1044                return -EINVAL;
1045        edid->pad = 0;
1046        ret = v4l2_subdev_call(s->sd, pad, get_edid, edid);
1047        edid->pad = pad;
1048        return ret;
1049}
1050
1051static int cobalt_s_edid(struct file *file, void *fh, struct v4l2_edid *edid)
1052{
1053        struct cobalt_stream *s = video_drvdata(file);
1054        u32 pad = edid->pad;
1055        int ret;
1056
1057        if (edid->pad >= 2)
1058                return -EINVAL;
1059        edid->pad = 0;
1060        ret = v4l2_subdev_call(s->sd, pad, set_edid, edid);
1061        edid->pad = pad;
1062        return ret;
1063}
1064
1065static int cobalt_subscribe_event(struct v4l2_fh *fh,
1066                                  const struct v4l2_event_subscription *sub)
1067{
1068        switch (sub->type) {
1069        case V4L2_EVENT_SOURCE_CHANGE:
1070                return v4l2_event_subscribe(fh, sub, 4, NULL);
1071        }
1072        return v4l2_ctrl_subscribe_event(fh, sub);
1073}
1074
1075static int cobalt_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1076{
1077        if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1078                return -EINVAL;
1079        a->parm.capture.timeperframe.numerator = 1;
1080        a->parm.capture.timeperframe.denominator = 60;
1081        a->parm.capture.readbuffers = 3;
1082        return 0;
1083}
1084
1085static const struct v4l2_ioctl_ops cobalt_ioctl_ops = {
1086        .vidioc_querycap                = cobalt_querycap,
1087        .vidioc_g_parm                  = cobalt_g_parm,
1088        .vidioc_log_status              = cobalt_log_status,
1089        .vidioc_streamon                = vb2_ioctl_streamon,
1090        .vidioc_streamoff               = vb2_ioctl_streamoff,
1091        .vidioc_enum_input              = cobalt_enum_input,
1092        .vidioc_g_input                 = cobalt_g_input,
1093        .vidioc_s_input                 = cobalt_s_input,
1094        .vidioc_enum_fmt_vid_cap        = cobalt_enum_fmt_vid_cap,
1095        .vidioc_g_fmt_vid_cap           = cobalt_g_fmt_vid_cap,
1096        .vidioc_s_fmt_vid_cap           = cobalt_s_fmt_vid_cap,
1097        .vidioc_try_fmt_vid_cap         = cobalt_try_fmt_vid_cap,
1098        .vidioc_enum_output             = cobalt_enum_output,
1099        .vidioc_g_output                = cobalt_g_output,
1100        .vidioc_s_output                = cobalt_s_output,
1101        .vidioc_enum_fmt_vid_out        = cobalt_enum_fmt_vid_out,
1102        .vidioc_g_fmt_vid_out           = cobalt_g_fmt_vid_out,
1103        .vidioc_s_fmt_vid_out           = cobalt_s_fmt_vid_out,
1104        .vidioc_try_fmt_vid_out         = cobalt_try_fmt_vid_out,
1105        .vidioc_s_dv_timings            = cobalt_s_dv_timings,
1106        .vidioc_g_dv_timings            = cobalt_g_dv_timings,
1107        .vidioc_query_dv_timings        = cobalt_query_dv_timings,
1108        .vidioc_enum_dv_timings         = cobalt_enum_dv_timings,
1109        .vidioc_dv_timings_cap          = cobalt_dv_timings_cap,
1110        .vidioc_g_edid                  = cobalt_g_edid,
1111        .vidioc_s_edid                  = cobalt_s_edid,
1112        .vidioc_subscribe_event         = cobalt_subscribe_event,
1113        .vidioc_unsubscribe_event       = v4l2_event_unsubscribe,
1114        .vidioc_reqbufs                 = vb2_ioctl_reqbufs,
1115        .vidioc_create_bufs             = vb2_ioctl_create_bufs,
1116        .vidioc_querybuf                = vb2_ioctl_querybuf,
1117        .vidioc_qbuf                    = vb2_ioctl_qbuf,
1118        .vidioc_dqbuf                   = vb2_ioctl_dqbuf,
1119        .vidioc_expbuf                  = vb2_ioctl_expbuf,
1120#ifdef CONFIG_VIDEO_ADV_DEBUG
1121        .vidioc_g_register              = cobalt_g_register,
1122        .vidioc_s_register              = cobalt_s_register,
1123#endif
1124};
1125
1126static const struct v4l2_ioctl_ops cobalt_ioctl_empty_ops = {
1127#ifdef CONFIG_VIDEO_ADV_DEBUG
1128        .vidioc_g_register              = cobalt_g_register,
1129        .vidioc_s_register              = cobalt_s_register,
1130#endif
1131};
1132
1133/* Register device nodes */
1134
1135static const struct v4l2_file_operations cobalt_fops = {
1136        .owner = THIS_MODULE,
1137        .open = v4l2_fh_open,
1138        .unlocked_ioctl = video_ioctl2,
1139        .release = vb2_fop_release,
1140        .poll = vb2_fop_poll,
1141        .mmap = vb2_fop_mmap,
1142        .read = vb2_fop_read,
1143};
1144
1145static const struct v4l2_file_operations cobalt_out_fops = {
1146        .owner = THIS_MODULE,
1147        .open = v4l2_fh_open,
1148        .unlocked_ioctl = video_ioctl2,
1149        .release = vb2_fop_release,
1150        .poll = vb2_fop_poll,
1151        .mmap = vb2_fop_mmap,
1152        .write = vb2_fop_write,
1153};
1154
1155static const struct v4l2_file_operations cobalt_empty_fops = {
1156        .owner = THIS_MODULE,
1157        .open = v4l2_fh_open,
1158        .unlocked_ioctl = video_ioctl2,
1159        .release = v4l2_fh_release,
1160};
1161
1162static int cobalt_node_register(struct cobalt *cobalt, int node)
1163{
1164        static const struct v4l2_dv_timings dv1080p60 =
1165                V4L2_DV_BT_CEA_1920X1080P60;
1166        struct cobalt_stream *s = cobalt->streams + node;
1167        struct video_device *vdev = &s->vdev;
1168        struct vb2_queue *q = &s->q;
1169        int ret;
1170
1171        mutex_init(&s->lock);
1172        spin_lock_init(&s->irqlock);
1173
1174        snprintf(vdev->name, sizeof(vdev->name),
1175                        "%s-%d", cobalt->v4l2_dev.name, node);
1176        s->width = 1920;
1177        /* Audio frames are just 4 lines of 1920 bytes */
1178        s->height = s->is_audio ? 4 : 1080;
1179
1180        if (s->is_audio) {
1181                s->bpp = 1;
1182                s->pixfmt = V4L2_PIX_FMT_GREY;
1183        } else if (s->is_output) {
1184                s->bpp = COBALT_BYTES_PER_PIXEL_RGB32;
1185                s->pixfmt = V4L2_PIX_FMT_BGR32;
1186        } else {
1187                s->bpp = COBALT_BYTES_PER_PIXEL_YUYV;
1188                s->pixfmt = V4L2_PIX_FMT_YUYV;
1189        }
1190        s->colorspace = V4L2_COLORSPACE_SRGB;
1191        s->stride = s->width * s->bpp;
1192
1193        if (!s->is_audio) {
1194                if (s->is_dummy)
1195                        cobalt_warn("Setting up dummy video node %d\n", node);
1196                vdev->v4l2_dev = &cobalt->v4l2_dev;
1197                if (s->is_dummy)
1198                        vdev->fops = &cobalt_empty_fops;
1199                else
1200                        vdev->fops = s->is_output ? &cobalt_out_fops :
1201                                                    &cobalt_fops;
1202                vdev->release = video_device_release_empty;
1203                vdev->vfl_dir = s->is_output ? VFL_DIR_TX : VFL_DIR_RX;
1204                vdev->lock = &s->lock;
1205                if (s->sd)
1206                        vdev->ctrl_handler = s->sd->ctrl_handler;
1207                s->timings = dv1080p60;
1208                v4l2_subdev_call(s->sd, video, s_dv_timings, &s->timings);
1209                if (!s->is_output && s->sd)
1210                        cobalt_enable_input(s);
1211                vdev->ioctl_ops = s->is_dummy ? &cobalt_ioctl_empty_ops :
1212                                  &cobalt_ioctl_ops;
1213        }
1214
1215        INIT_LIST_HEAD(&s->bufs);
1216        q->type = s->is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT :
1217                                 V4L2_BUF_TYPE_VIDEO_CAPTURE;
1218        q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1219        q->io_modes |= s->is_output ? VB2_WRITE : VB2_READ;
1220        q->drv_priv = s;
1221        q->buf_struct_size = sizeof(struct cobalt_buffer);
1222        q->ops = &cobalt_qops;
1223        q->mem_ops = &vb2_dma_sg_memops;
1224        q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1225        q->min_buffers_needed = 2;
1226        q->lock = &s->lock;
1227        vdev->queue = q;
1228
1229        video_set_drvdata(vdev, s);
1230        ret = vb2_queue_init(q);
1231        if (!s->is_audio && ret == 0)
1232                ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
1233        else if (!s->is_dummy)
1234                ret = cobalt_alsa_init(s);
1235
1236        if (ret < 0) {
1237                if (!s->is_audio)
1238                        cobalt_err("couldn't register v4l2 device node %d\n",
1239                                        node);
1240                return ret;
1241        }
1242        cobalt_info("registered node %d\n", node);
1243        return 0;
1244}
1245
1246/* Initialize v4l2 variables and register v4l2 devices */
1247int cobalt_nodes_register(struct cobalt *cobalt)
1248{
1249        int node, ret;
1250
1251        /* Setup V4L2 Devices */
1252        for (node = 0; node < COBALT_NUM_STREAMS; node++) {
1253                ret = cobalt_node_register(cobalt, node);
1254                if (ret)
1255                        return ret;
1256        }
1257        return 0;
1258}
1259
1260/* Unregister v4l2 devices */
1261void cobalt_nodes_unregister(struct cobalt *cobalt)
1262{
1263        int node;
1264
1265        /* Teardown all streams */
1266        for (node = 0; node < COBALT_NUM_STREAMS; node++) {
1267                struct cobalt_stream *s = cobalt->streams + node;
1268                struct video_device *vdev = &s->vdev;
1269
1270                if (!s->is_audio)
1271                        video_unregister_device(vdev);
1272                else if (!s->is_dummy)
1273                        cobalt_alsa_exit(s);
1274        }
1275}
1276