diff options
Diffstat (limited to 'drivers/media/pci/cobalt/cobalt-v4l2.c')
| -rw-r--r-- | drivers/media/pci/cobalt/cobalt-v4l2.c | 1272 |
1 files changed, 1272 insertions, 0 deletions
diff --git a/drivers/media/pci/cobalt/cobalt-v4l2.c b/drivers/media/pci/cobalt/cobalt-v4l2.c new file mode 100644 index 000000000..b40c2d141 --- /dev/null +++ b/drivers/media/pci/cobalt/cobalt-v4l2.c @@ -0,0 +1,1272 @@ +/* + * cobalt V4L2 API + * + * Derived from ivtv-ioctl.c and cx18-fileops.c + * + * Copyright 2012-2015 Cisco Systems, Inc. and/or its affiliates. + * All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/math64.h> +#include <linux/pci.h> +#include <linux/v4l2-dv-timings.h> + +#include <media/v4l2-ctrls.h> +#include <media/v4l2-event.h> +#include <media/adv7604.h> +#include <media/adv7842.h> + +#include "cobalt-alsa.h" +#include "cobalt-cpld.h" +#include "cobalt-driver.h" +#include "cobalt-v4l2.h" +#include "cobalt-irq.h" +#include "cobalt-omnitek.h" + +static const struct v4l2_dv_timings cea1080p60 = V4L2_DV_BT_CEA_1920X1080P60; + +/* vb2 DMA streaming ops */ + +static int cobalt_queue_setup(struct vb2_queue *q, + const struct v4l2_format *fmt, + unsigned int *num_buffers, unsigned int *num_planes, + unsigned int sizes[], void *alloc_ctxs[]) +{ + struct cobalt_stream *s = q->drv_priv; + unsigned size = s->stride * s->height; + + if (*num_buffers < 3) + *num_buffers = 3; + if (*num_buffers > NR_BUFS) + *num_buffers = NR_BUFS; + *num_planes = 1; + if (fmt) { + if (fmt->fmt.pix.sizeimage < size) + return -EINVAL; + size = fmt->fmt.pix.sizeimage; + } + sizes[0] = size; + alloc_ctxs[0] = s->cobalt->alloc_ctx; + return 0; +} + +static int cobalt_buf_init(struct vb2_buffer *vb) +{ + struct cobalt_stream *s = vb->vb2_queue->drv_priv; + struct cobalt *cobalt = s->cobalt; + const size_t max_pages_per_line = + (COBALT_MAX_WIDTH * COBALT_MAX_BPP) / PAGE_SIZE + 2; + const size_t bytes = + COBALT_MAX_HEIGHT * max_pages_per_line * 0x20; + const size_t audio_bytes = ((1920 * 4) / PAGE_SIZE + 1) * 0x20; + struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->v4l2_buf.index]; + struct sg_table *sg_desc = vb2_dma_sg_plane_desc(vb, 0); + unsigned size; + int ret; + + size = s->stride * s->height; + if (vb2_plane_size(vb, 0) < size) { + cobalt_info("data will not fit into plane (%lu < %u)\n", + vb2_plane_size(vb, 0), size); + return -EINVAL; + } + + if (desc->virt == NULL) { + desc->dev = &cobalt->pci_dev->dev; + descriptor_list_allocate(desc, + s->is_audio ? audio_bytes : bytes); + if (desc->virt == NULL) + return -ENOMEM; + } + ret = descriptor_list_create(cobalt, sg_desc->sgl, + !s->is_output, sg_desc->nents, size, + s->width * s->bpp, s->stride, desc); + if (ret) + descriptor_list_free(desc); + return ret; +} + +static void cobalt_buf_cleanup(struct vb2_buffer *vb) +{ + struct cobalt_stream *s = vb->vb2_queue->drv_priv; + struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->v4l2_buf.index]; + + descriptor_list_free(desc); +} + +static int cobalt_buf_prepare(struct vb2_buffer *vb) +{ + struct cobalt_stream *s = vb->vb2_queue->drv_priv; + + vb2_set_plane_payload(vb, 0, s->stride * s->height); + vb->v4l2_buf.field = V4L2_FIELD_NONE; + return 0; +} + +static void chain_all_buffers(struct cobalt_stream *s) +{ + struct sg_dma_desc_info *desc[NR_BUFS]; + struct cobalt_buffer *cb; + struct list_head *p; + int i = 0; + + list_for_each(p, &s->bufs) { + cb = list_entry(p, struct cobalt_buffer, list); + desc[i] = &s->dma_desc_info[cb->vb.v4l2_buf.index]; + if (i > 0) + descriptor_list_chain(desc[i-1], desc[i]); + i++; + } +} + +static void cobalt_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_queue *q = vb->vb2_queue; + struct cobalt_stream *s = q->drv_priv; + struct cobalt_buffer *cb = to_cobalt_buffer(vb); + struct sg_dma_desc_info *desc = &s->dma_desc_info[vb->v4l2_buf.index]; + unsigned long flags; + + /* Prepare new buffer */ + descriptor_list_loopback(desc); + descriptor_list_interrupt_disable(desc); + + spin_lock_irqsave(&s->irqlock, flags); + list_add_tail(&cb->list, &s->bufs); + chain_all_buffers(s); + spin_unlock_irqrestore(&s->irqlock, flags); +} + +static void cobalt_enable_output(struct cobalt_stream *s) +{ + struct cobalt *cobalt = s->cobalt; + struct v4l2_bt_timings *bt = &s->timings.bt; + struct m00514_syncgen_flow_evcnt_regmap __iomem *vo = + COBALT_TX_BASE(cobalt); + unsigned fmt = s->pixfmt != V4L2_PIX_FMT_BGR32 ? + M00514_CONTROL_BITMAP_FORMAT_16_BPP_MSK : 0; + struct v4l2_subdev_format sd_fmt = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + + if (!cobalt_cpld_set_freq(cobalt, bt->pixelclock)) { + cobalt_err("pixelclock out of range\n"); + return; + } + + sd_fmt.format.colorspace = s->colorspace; + sd_fmt.format.xfer_func = s->xfer_func; + sd_fmt.format.ycbcr_enc = s->ycbcr_enc; + sd_fmt.format.quantization = s->quantization; + sd_fmt.format.width = bt->width; + sd_fmt.format.height = bt->height; + + /* Set up FDMA packer */ + switch (s->pixfmt) { + case V4L2_PIX_FMT_YUYV: + sd_fmt.format.code = MEDIA_BUS_FMT_UYVY8_1X16; + break; + case V4L2_PIX_FMT_BGR32: + sd_fmt.format.code = MEDIA_BUS_FMT_RGB888_1X24; + break; + } + v4l2_subdev_call(s->sd, pad, set_fmt, NULL, &sd_fmt); + + iowrite32(0, &vo->control); + /* 1080p60 */ + iowrite32(bt->hsync, &vo->sync_generator_h_sync_length); + iowrite32(bt->hbackporch, &vo->sync_generator_h_backporch_length); + iowrite32(bt->width, &vo->sync_generator_h_active_length); + iowrite32(bt->hfrontporch, &vo->sync_generator_h_frontporch_length); + iowrite32(bt->vsync, &vo->sync_generator_v_sync_length); + iowrite32(bt->vbackporch, &vo->sync_generator_v_backporch_length); + iowrite32(bt->height, &vo->sync_generator_v_active_length); + iowrite32(bt->vfrontporch, &vo->sync_generator_v_frontporch_length); + iowrite32(0x9900c1, &vo->error_color); + + iowrite32(M00514_CONTROL_BITMAP_SYNC_GENERATOR_LOAD_PARAM_MSK | fmt, + &vo->control); + iowrite32(M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK | fmt, &vo->control); + iowrite32(M00514_CONTROL_BITMAP_SYNC_GENERATOR_ENABLE_MSK | + M00514_CONTROL_BITMAP_FLOW_CTRL_OUTPUT_ENABLE_MSK | + fmt, &vo->control); +} + +static void cobalt_enable_input(struct cobalt_stream *s) +{ + struct cobalt *cobalt = s->cobalt; + int ch = (int)s->video_channel; + struct m00235_fdma_packer_regmap __iomem *packer; + struct v4l2_subdev_format sd_fmt_yuyv = { + .pad = s->pad_source, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + .format.code = MEDIA_BUS_FMT_YUYV8_1X16, + }; + struct v4l2_subdev_format sd_fmt_rgb = { + .pad = s->pad_source, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + .format.code = MEDIA_BUS_FMT_RGB888_1X24, + }; + + cobalt_dbg(1, "video_channel %d (%s, %s)\n", + s->video_channel, + s->input == 0 ? "hdmi" : "generator", + "YUYV"); + + packer = COBALT_CVI_PACKER(cobalt, ch); + + /* Set up FDMA packer */ + switch (s->pixfmt) { + case V4L2_PIX_FMT_YUYV: + iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK | + (1 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST), + &packer->control); + v4l2_subdev_call(s->sd, pad, set_fmt, NULL, + &sd_fmt_yuyv); + break; + case V4L2_PIX_FMT_RGB24: + iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK | + (2 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST), + &packer->control); + v4l2_subdev_call(s->sd, pad, set_fmt, NULL, + &sd_fmt_rgb); + break; + case V4L2_PIX_FMT_BGR32: + iowrite32(M00235_CONTROL_BITMAP_ENABLE_MSK | + M00235_CONTROL_BITMAP_ENDIAN_FORMAT_MSK | + (3 << M00235_CONTROL_BITMAP_PACK_FORMAT_OFST), + &packer->control); + v4l2_subdev_call(s->sd, pad, set_fmt, NULL, + &sd_fmt_rgb); + break; + } +} + +static void cobalt_dma_start_streaming(struct cobalt_stream *s) +{ + struct cobalt *cobalt = s->cobalt; + int rx = s->video_channel; + struct m00460_evcnt_regmap __iomem *evcnt = + COBALT_CVI_EVCNT(cobalt, rx); + struct cobalt_buffer *cb; + unsigned long flags; + + spin_lock_irqsave(&s->irqlock, flags); + if (!s->is_output) { + iowrite32(M00460_CONTROL_BITMAP_CLEAR_MSK, &evcnt->control); + iowrite32(M00460_CONTROL_BITMAP_ENABLE_MSK, &evcnt->control); + } else { + struct m00514_syncgen_flow_evcnt_regmap __iomem *vo = + COBALT_TX_BASE(cobalt); + u32 ctrl = ioread32(&vo->control); + + ctrl &= ~(M00514_CONTROL_BITMAP_EVCNT_ENABLE_MSK | + M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK); + iowrite32(ctrl | M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK, + &vo->control); + iowrite32(ctrl | M00514_CONTROL_BITMAP_EVCNT_ENABLE_MSK, + &vo->control); + } + cb = list_first_entry(&s->bufs, struct cobalt_buffer, list); + omni_sg_dma_start(s, &s->dma_desc_info[cb->vb.v4l2_buf.index]); + spin_unlock_irqrestore(&s->irqlock, flags); +} + +static int cobalt_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct cobalt_stream *s = q->drv_priv; + struct cobalt *cobalt = s->cobalt; + struct m00233_video_measure_regmap __iomem *vmr; + struct m00473_freewheel_regmap __iomem *fw; + struct m00479_clk_loss_detector_regmap __iomem *clkloss; + int rx = s->video_channel; + struct m00389_cvi_regmap __iomem *cvi = COBALT_CVI(cobalt, rx); + struct m00460_evcnt_regmap __iomem *evcnt = COBALT_CVI_EVCNT(cobalt, rx); + struct v4l2_bt_timings *bt = &s->timings.bt; + u64 tot_size; + u32 clk_freq; + + if (s->is_audio) + goto done; + if (s->is_output) { + s->unstable_frame = false; + cobalt_enable_output(s); + goto done; + } + + cobalt_enable_input(s); + + fw = COBALT_CVI_FREEWHEEL(cobalt, rx); + vmr = COBALT_CVI_VMR(cobalt, rx); + clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx); + + iowrite32(M00460_CONTROL_BITMAP_CLEAR_MSK, &evcnt->control); + iowrite32(M00460_CONTROL_BITMAP_ENABLE_MSK, &evcnt->control); + iowrite32(bt->width, &cvi->frame_width); + iowrite32(bt->height, &cvi->frame_height); + tot_size = V4L2_DV_BT_FRAME_WIDTH(bt) * V4L2_DV_BT_FRAME_HEIGHT(bt); + iowrite32(div_u64((u64)V4L2_DV_BT_FRAME_WIDTH(bt) * COBALT_CLK * 4, + bt->pixelclock), &vmr->hsync_timeout_val); + iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control); + clk_freq = ioread32(&fw->clk_freq); + iowrite32(clk_freq / 1000000, &clkloss->ref_clk_cnt_val); + /* The lower bound for the clock frequency is 0.5% lower as is + * allowed by the spec */ + iowrite32(div_u64(bt->pixelclock * 995, 1000000000), + &clkloss->test_clk_cnt_val); + /* will be enabled after the first frame has been received */ + iowrite32(bt->width * bt->height, &fw->active_length); + iowrite32(div_u64((u64)clk_freq * tot_size, bt->pixelclock), + &fw->total_length); + iowrite32(M00233_IRQ_TRIGGERS_BITMAP_VACTIVE_AREA_MSK | + M00233_IRQ_TRIGGERS_BITMAP_HACTIVE_AREA_MSK, + &vmr->irq_triggers); + iowrite32(0, &cvi->control); + iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control); + + iowrite32(0xff, &fw->output_color); + iowrite32(M00479_CTRL_BITMAP_ENABLE_MSK, &clkloss->ctrl); + iowrite32(M00473_CTRL_BITMAP_ENABLE_MSK | + M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK, &fw->ctrl); + s->unstable_frame = true; + s->enable_freewheel = false; + s->enable_cvi = false; + s->skip_first_frames = 0; + +done: + s->sequence = 0; + cobalt_dma_start_streaming(s); + return 0; +} + +static void cobalt_dma_stop_streaming(struct cobalt_stream *s) +{ + struct cobalt *cobalt = s->cobalt; + struct sg_dma_desc_info *desc; + struct cobalt_buffer *cb; + struct list_head *p; + unsigned long flags; + int timeout_msec = 100; + int rx = s->video_channel; + struct m00460_evcnt_regmap __iomem *evcnt = + COBALT_CVI_EVCNT(cobalt, rx); + + if (!s->is_output) { + iowrite32(0, &evcnt->control); + } else if (!s->is_audio) { + struct m00514_syncgen_flow_evcnt_regmap __iomem *vo = + COBALT_TX_BASE(cobalt); + + iowrite32(M00514_CONTROL_BITMAP_EVCNT_CLEAR_MSK, &vo->control); + iowrite32(0, &vo->control); + } + + /* Try to stop the DMA engine gracefully */ + spin_lock_irqsave(&s->irqlock, flags); + list_for_each(p, &s->bufs) { + cb = list_entry(p, struct cobalt_buffer, list); + desc = &s->dma_desc_info[cb->vb.v4l2_buf.index]; + /* Stop DMA after this descriptor chain */ + descriptor_list_end_of_chain(desc); + } + spin_unlock_irqrestore(&s->irqlock, flags); + + /* Wait 100 milisecond for DMA to finish, abort on timeout. */ + if (!wait_event_timeout(s->q.done_wq, is_dma_done(s), + msecs_to_jiffies(timeout_msec))) { + omni_sg_dma_abort_channel(s); + pr_warn("aborted\n"); + } + cobalt_write_bar0(cobalt, DMA_INTERRUPT_STATUS_REG, + 1 << s->dma_channel); +} + +static void cobalt_stop_streaming(struct vb2_queue *q) +{ + struct cobalt_stream *s = q->drv_priv; + struct cobalt *cobalt = s->cobalt; + int rx = s->video_channel; + struct m00233_video_measure_regmap __iomem *vmr; + struct m00473_freewheel_regmap __iomem *fw; + struct m00479_clk_loss_detector_regmap __iomem *clkloss; + struct cobalt_buffer *cb; + struct list_head *p, *safe; + unsigned long flags; + + cobalt_dma_stop_streaming(s); + + /* Return all buffers to user space */ + spin_lock_irqsave(&s->irqlock, flags); + list_for_each_safe(p, safe, &s->bufs) { + cb = list_entry(p, struct cobalt_buffer, list); + list_del(&cb->list); + vb2_buffer_done(&cb->vb, VB2_BUF_STATE_ERROR); + } + spin_unlock_irqrestore(&s->irqlock, flags); + + if (s->is_audio || s->is_output) + return; + + fw = COBALT_CVI_FREEWHEEL(cobalt, rx); + vmr = COBALT_CVI_VMR(cobalt, rx); + clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx); + iowrite32(0, &vmr->control); + iowrite32(M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK, &vmr->control); + iowrite32(0, &fw->ctrl); + iowrite32(0, &clkloss->ctrl); +} + +static const struct vb2_ops cobalt_qops = { + .queue_setup = cobalt_queue_setup, + .buf_init = cobalt_buf_init, + .buf_cleanup = cobalt_buf_cleanup, + .buf_prepare = cobalt_buf_prepare, + .buf_queue = cobalt_buf_queue, + .start_streaming = cobalt_start_streaming, + .stop_streaming = cobalt_stop_streaming, + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, +}; + +/* V4L2 ioctls */ + +#ifdef CONFIG_VIDEO_ADV_DEBUG +static int cobalt_cobaltc(struct cobalt *cobalt, unsigned int cmd, void *arg) +{ + struct v4l2_dbg_register *regs = arg; + void __iomem *adrs = cobalt->bar1 + regs->reg; + + cobalt_info("cobalt_cobaltc: adrs = %p\n", adrs); + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + regs->size = 4; + if (cmd == VIDIOC_DBG_S_REGISTER) + iowrite32(regs->val, adrs); + else + regs->val = ioread32(adrs); + return 0; +} + +static int cobalt_g_register(struct file *file, void *priv_fh, + struct v4l2_dbg_register *reg) +{ + struct cobalt_stream *s = video_drvdata(file); + struct cobalt *cobalt = s->cobalt; + + return cobalt_cobaltc(cobalt, VIDIOC_DBG_G_REGISTER, reg); +} + +static int cobalt_s_register(struct file *file, void *priv_fh, + const struct v4l2_dbg_register *reg) +{ + struct cobalt_stream *s = video_drvdata(file); + struct cobalt *cobalt = s->cobalt; + + return cobalt_cobaltc(cobalt, VIDIOC_DBG_S_REGISTER, + (struct v4l2_dbg_register *)reg); +} +#endif + +static int cobalt_querycap(struct file *file, void *priv_fh, + struct v4l2_capability *vcap) +{ + struct cobalt_stream *s = video_drvdata(file); + struct cobalt *cobalt = s->cobalt; + + strlcpy(vcap->driver, "cobalt", sizeof(vcap->driver)); + strlcpy(vcap->card, "cobalt", sizeof(vcap->card)); + snprintf(vcap->bus_info, sizeof(vcap->bus_info), + "PCIe:%s", pci_name(cobalt->pci_dev)); + vcap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; + if (s->is_output) + vcap->device_caps |= V4L2_CAP_VIDEO_OUTPUT; + else + vcap->device_caps |= V4L2_CAP_VIDEO_CAPTURE; + vcap->capabilities = vcap->device_caps | V4L2_CAP_DEVICE_CAPS | + V4L2_CAP_VIDEO_CAPTURE; + if (cobalt->have_hsma_tx) + vcap->capabilities |= V4L2_CAP_VIDEO_OUTPUT; + return 0; +} + +static void cobalt_video_input_status_show(struct cobalt_stream *s) +{ + struct m00389_cvi_regmap __iomem *cvi; + struct m00233_video_measure_regmap __iomem *vmr; + struct m00473_freewheel_regmap __iomem *fw; + struct m00479_clk_loss_detector_regmap __iomem *clkloss; + struct m00235_fdma_packer_regmap __iomem *packer; + int rx = s->video_channel; + struct cobalt *cobalt = s->cobalt; + u32 cvi_ctrl, cvi_stat; + u32 vmr_ctrl, vmr_stat; + + cvi = COBALT_CVI(cobalt, rx); + vmr = COBALT_CVI_VMR(cobalt, rx); + fw = COBALT_CVI_FREEWHEEL(cobalt, rx); + clkloss = COBALT_CVI_CLK_LOSS(cobalt, rx); + packer = COBALT_CVI_PACKER(cobalt, rx); + cvi_ctrl = ioread32(&cvi->control); + cvi_stat = ioread32(&cvi->status); + vmr_ctrl = ioread32(&vmr->control); + vmr_stat = ioread32(&vmr->control); + cobalt_info("rx%d: cvi resolution: %dx%d\n", rx, + ioread32(&cvi->frame_width), ioread32(&cvi->frame_height)); + cobalt_info("rx%d: cvi control: %s%s%s\n", rx, + (cvi_ctrl & M00389_CONTROL_BITMAP_ENABLE_MSK) ? + "enable " : "disable ", + (cvi_ctrl & M00389_CONTROL_BITMAP_HSYNC_POLARITY_LOW_MSK) ? + "HSync- " : "HSync+ ", + (cvi_ctrl & M00389_CONTROL_BITMAP_VSYNC_POLARITY_LOW_MSK) ? + "VSync- " : "VSync+ "); + cobalt_info("rx%d: cvi status: %s%s\n", rx, + (cvi_stat & M00389_STATUS_BITMAP_LOCK_MSK) ? + "lock " : "no-lock ", + (cvi_stat & M00389_STATUS_BITMAP_ERROR_MSK) ? + "error " : "no-error "); + + cobalt_info("rx%d: Measurements: %s%s%s%s%s%s%s\n", rx, + (vmr_ctrl & M00233_CONTROL_BITMAP_HSYNC_POLARITY_LOW_MSK) ? + "HSync- " : "HSync+ ", + (vmr_ctrl & M00233_CONTROL_BITMAP_VSYNC_POLARITY_LOW_MSK) ? + "VSync- " : "VSync+ ", + (vmr_ctrl & M00233_CONTROL_BITMAP_ENABLE_MEASURE_MSK) ? + "enabled " : "disabled ", + (vmr_ctrl & M00233_CONTROL_BITMAP_ENABLE_INTERRUPT_MSK) ? + "irq-enabled " : "irq-disabled ", + (vmr_ctrl & M00233_CONTROL_BITMAP_UPDATE_ON_HSYNC_MSK) ? + "update-on-hsync " : "", + (vmr_stat & M00233_STATUS_BITMAP_HSYNC_TIMEOUT_MSK) ? + "hsync-timeout " : "", + (vmr_stat & M00233_STATUS_BITMAP_INIT_DONE_MSK) ? + "init-done" : ""); + cobalt_info("rx%d: irq_status: 0x%02x irq_triggers: 0x%02x\n", rx, + ioread32(&vmr->irq_status) & 0xff, + ioread32(&vmr->irq_triggers) & 0xff); + cobalt_info("rx%d: vsync: %d\n", rx, ioread32(&vmr->vsync_time)); + cobalt_info("rx%d: vbp: %d\n", rx, ioread32(&vmr->vback_porch)); + cobalt_info("rx%d: vact: %d\n", rx, ioread32(&vmr->vactive_area)); + cobalt_info("rx%d: vfb: %d\n", rx, ioread32(&vmr->vfront_porch)); + cobalt_info("rx%d: hsync: %d\n", rx, ioread32(&vmr->hsync_time)); + cobalt_info("rx%d: hbp: %d\n", rx, ioread32(&vmr->hback_porch)); + cobalt_info("rx%d: hact: %d\n", rx, ioread32(&vmr->hactive_area)); + cobalt_info("rx%d: hfb: %d\n", rx, ioread32(&vmr->hfront_porch)); + cobalt_info("rx%d: Freewheeling: %s%s%s\n", rx, + (ioread32(&fw->ctrl) & M00473_CTRL_BITMAP_ENABLE_MSK) ? + "enabled " : "disabled ", + (ioread32(&fw->ctrl) & M00473_CTRL_BITMAP_FORCE_FREEWHEEL_MODE_MSK) ? + "forced " : "", + (ioread32(&fw->status) & M00473_STATUS_BITMAP_FREEWHEEL_MODE_MSK) ? + "freewheeling " : "video-passthrough "); + iowrite32(0xff, &vmr->irq_status); + cobalt_info("rx%d: Clock Loss Detection: %s%s\n", rx, + (ioread32(&clkloss->ctrl) & M00479_CTRL_BITMAP_ENABLE_MSK) ? + "enabled " : "disabled ", + (ioread32(&clkloss->status) & M00479_STATUS_BITMAP_CLOCK_MISSING_MSK) ? + "clock-missing " : "found-clock "); + cobalt_info("rx%d: Packer: %x\n", rx, ioread32(&packer->control)); +} + +static int cobalt_log_status(struct file *file, void *priv_fh) +{ + struct cobalt_stream *s = video_drvdata(file); + struct cobalt *cobalt = s->cobalt; + struct m00514_syncgen_flow_evcnt_regmap __iomem *vo = + COBALT_TX_BASE(cobalt); + u8 stat; + + cobalt_info("%s", cobalt->hdl_info); + cobalt_info("sysctrl: %08x, sysstat: %08x\n", + cobalt_g_sysctrl(cobalt), + cobalt_g_sysstat(cobalt)); + cobalt_info("dma channel: %d, video channel: %d\n", + s->dma_channel, s->video_channel); + cobalt_pcie_status_show(cobalt); + cobalt_cpld_status(cobalt); + cobalt_irq_log_status(cobalt); + v4l2_subdev_call(s->sd, core, log_status); + if (!s->is_output) { + cobalt_video_input_status_show(s); + return 0; + } + + stat = ioread32(&vo->rd_status); + + cobalt_info("tx: status: %s%s\n", + (stat & M00514_RD_STATUS_BITMAP_FLOW_CTRL_NO_DATA_ERROR_MSK) ? + "no_data " : "", + (stat & M00514_RD_STATUS_BITMAP_READY_BUFFER_FULL_MSK) ? + "ready_buffer_full " : ""); + cobalt_info("tx: evcnt: %d\n", ioread32(&vo->rd_evcnt_count)); + return 0; +} + +static int cobalt_enum_dv_timings(struct file *file, void *priv_fh, + struct v4l2_enum_dv_timings *timings) +{ + struct cobalt_stream *s = video_drvdata(file); + + if (s->input == 1) { + if (timings->index) + return -EINVAL; + memset(timings->reserved, 0, sizeof(timings->reserved)); + timings->timings = cea1080p60; + return 0; + } + timings->pad = 0; + return v4l2_subdev_call(s->sd, + pad, enum_dv_timings, timings); +} + +static int cobalt_s_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct cobalt_stream *s = video_drvdata(file); + int err; + + if (vb2_is_busy(&s->q)) + return -EBUSY; + + if (s->input == 1) { + *timings = cea1080p60; + return 0; + } + err = v4l2_subdev_call(s->sd, + video, s_dv_timings, timings); + if (!err) { + s->timings = *timings; + s->width = timings->bt.width; + s->height = timings->bt.height; + s->stride = timings->bt.width * s->bpp; + } + return err; +} + +static int cobalt_g_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct cobalt_stream *s = video_drvdata(file); + + if (s->input == 1) { + *timings = cea1080p60; + return 0; + } + return v4l2_subdev_call(s->sd, + video, g_dv_timings, timings); +} + +static int cobalt_query_dv_timings(struct file *file, void *priv_fh, + struct v4l2_dv_timings *timings) +{ + struct cobalt_stream *s = video_drvdata(file); + + if (s->input == 1) { + *timings = cea1080p60; + return 0; + } + return v4l2_subdev_call(s->sd, + video, query_dv_timings, timings); +} + +static int cobalt_dv_timings_cap(struct file *file, void *priv_fh, + struct v4l2_dv_timings_cap *cap) +{ + struct cobalt_stream *s = video_drvdata(file); + + cap->pad = 0; + return v4l2_subdev_call(s->sd, + pad, dv_timings_cap, cap); +} + +static int cobalt_enum_fmt_vid_cap(struct file *file, void *priv_fh, + struct v4l2_fmtdesc *f) +{ + switch (f->index) { + case 0: + strlcpy(f->description, "YUV 4:2:2", sizeof(f->description)); + f->pixelformat = V4L2_PIX_FMT_YUYV; + break; + case 1: + strlcpy(f->description, "RGB24", sizeof(f->description)); + f->pixelformat = V4L2_PIX_FMT_RGB24; + break; + case 2: + strlcpy(f->description, "RGB32", sizeof(f->description)); + f->pixelformat = V4L2_PIX_FMT_BGR32; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int cobalt_g_fmt_vid_cap(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct cobalt_stream *s = video_drvdata(file); + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_format sd_fmt; + + pix->width = s->width; + pix->height = s->height; + pix->bytesperline = s->stride; + pix->field = V4L2_FIELD_NONE; + + if (s->input == 1) { + pix->colorspace = V4L2_COLORSPACE_SRGB; + } else { + sd_fmt.pad = s->pad_source; + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + v4l2_subdev_call(s->sd, pad, get_fmt, NULL, &sd_fmt); + v4l2_fill_pix_format(pix, &sd_fmt.format); + } + + pix->pixelformat = s->pixfmt; + pix->sizeimage = pix->bytesperline * pix->height; + + return 0; +} + +static int cobalt_try_fmt_vid_cap(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct cobalt_stream *s = video_drvdata(file); + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_format sd_fmt; + + /* Check for min (QCIF) and max (Full HD) size */ + if ((pix->width < 176) || (pix->height < 144)) { + pix->width = 176; + pix->height = 144; + } + + if ((pix->width > 1920) || (pix->height > 1080)) { + pix->width = 1920; + pix->height = 1080; + } + + /* Make width multiple of 4 */ + pix->width &= ~0x3; + + /* Make height multiple of 2 */ + pix->height &= ~0x1; + + if (s->input == 1) { + /* Generator => fixed format only */ + pix->width = 1920; + pix->height = 1080; + pix->colorspace = V4L2_COLORSPACE_SRGB; + } else { + sd_fmt.pad = s->pad_source; + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + v4l2_subdev_call(s->sd, pad, get_fmt, NULL, &sd_fmt); + v4l2_fill_pix_format(pix, &sd_fmt.format); + } + + switch (pix->pixelformat) { + case V4L2_PIX_FMT_YUYV: + default: + pix->bytesperline = max(pix->bytesperline & ~0x3, + pix->width * COBALT_BYTES_PER_PIXEL_YUYV); + pix->pixelformat = V4L2_PIX_FMT_YUYV; + break; + case V4L2_PIX_FMT_RGB24: + pix->bytesperline = max(pix->bytesperline & ~0x3, + pix->width * COBALT_BYTES_PER_PIXEL_RGB24); + break; + case V4L2_PIX_FMT_BGR32: + pix->bytesperline = max(pix->bytesperline & ~0x3, + pix->width * COBALT_BYTES_PER_PIXEL_RGB32); + break; + } + + pix->sizeimage = pix->bytesperline * pix->height; + pix->field = V4L2_FIELD_NONE; + pix->priv = 0; + + return 0; +} + +static int cobalt_s_fmt_vid_cap(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct cobalt_stream *s = video_drvdata(file); + struct v4l2_pix_format *pix = &f->fmt.pix; + + if (vb2_is_busy(&s->q)) + return -EBUSY; + + if (cobalt_try_fmt_vid_cap(file, priv_fh, f)) + return -EINVAL; + + s->width = pix->width; + s->height = pix->height; + s->stride = pix->bytesperline; + switch (pix->pixelformat) { + case V4L2_PIX_FMT_YUYV: + s->bpp = COBALT_BYTES_PER_PIXEL_YUYV; + break; + case V4L2_PIX_FMT_RGB24: + s->bpp = COBALT_BYTES_PER_PIXEL_RGB24; + break; + case V4L2_PIX_FMT_BGR32: + s->bpp = COBALT_BYTES_PER_PIXEL_RGB32; + break; + default: + return -EINVAL; + } + s->pixfmt = pix->pixelformat; + cobalt_enable_input(s); + + return 0; +} + +static int cobalt_try_fmt_vid_out(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct v4l2_pix_format *pix = &f->fmt.pix; + + /* Check for min (QCIF) and max (Full HD) size */ + if ((pix->width < 176) || (pix->height < 144)) { + pix->width = 176; + pix->height = 144; + } + + if ((pix->width > 1920) || (pix->height > 1080)) { + pix->width = 1920; + pix->height = 1080; + } + + /* Make width multiple of 4 */ + pix->width &= ~0x3; + + /* Make height multiple of 2 */ + pix->height &= ~0x1; + + switch (pix->pixelformat) { + case V4L2_PIX_FMT_YUYV: + default: + pix->bytesperline = max(pix->bytesperline & ~0x3, + pix->width * COBALT_BYTES_PER_PIXEL_YUYV); + pix->pixelformat = V4L2_PIX_FMT_YUYV; + break; + case V4L2_PIX_FMT_BGR32: + pix->bytesperline = max(pix->bytesperline & ~0x3, + pix->width * COBALT_BYTES_PER_PIXEL_RGB32); + break; + } + + pix->sizeimage = pix->bytesperline * pix->height; + pix->field = V4L2_FIELD_NONE; + + return 0; +} + +static int cobalt_g_fmt_vid_out(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct cobalt_stream *s = video_drvdata(file); + struct v4l2_pix_format *pix = &f->fmt.pix; + + pix->width = s->width; + pix->height = s->height; + pix->bytesperline = s->stride; + pix->field = V4L2_FIELD_NONE; + pix->pixelformat = s->pixfmt; + pix->colorspace = s->colorspace; + pix->xfer_func = s->xfer_func; + pix->ycbcr_enc = s->ycbcr_enc; + pix->quantization = s->quantization; + pix->sizeimage = pix->bytesperline * pix->height; + + return 0; +} + +static int cobalt_enum_fmt_vid_out(struct file *file, void *priv_fh, + struct v4l2_fmtdesc *f) +{ + switch (f->index) { + case 0: + strlcpy(f->description, "YUV 4:2:2", sizeof(f->description)); + f->pixelformat = V4L2_PIX_FMT_YUYV; + break; + case 1: + strlcpy(f->description, "RGB32", sizeof(f->description)); + f->pixelformat = V4L2_PIX_FMT_BGR32; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int cobalt_s_fmt_vid_out(struct file *file, void *priv_fh, + struct v4l2_format *f) +{ + struct cobalt_stream *s = video_drvdata(file); + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_format sd_fmt = { 0 }; + u32 code; + + if (cobalt_try_fmt_vid_out(file, priv_fh, f)) + return -EINVAL; + + if (vb2_is_busy(&s->q) && (pix->pixelformat != s->pixfmt || + pix->width != s->width || pix->height != s->height || + pix->bytesperline != s->stride)) + return -EBUSY; + + switch (pix->pixelformat) { + case V4L2_PIX_FMT_YUYV: + s->bpp = COBALT_BYTES_PER_PIXEL_YUYV; + code = MEDIA_BUS_FMT_UYVY8_1X16; + break; + case V4L2_PIX_FMT_BGR32: + s->bpp = COBALT_BYTES_PER_PIXEL_RGB32; + code = MEDIA_BUS_FMT_RGB888_1X24; + break; + default: + return -EINVAL; + } + s->width = pix->width; + s->height = pix->height; + s->stride = pix->bytesperline; + s->pixfmt = pix->pixelformat; + s->colorspace = pix->colorspace; + s->xfer_func = pix->xfer_func; + s->ycbcr_enc = pix->ycbcr_enc; + s->quantization = pix->quantization; + sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; + v4l2_fill_mbus_format(&sd_fmt.format, pix, code); + v4l2_subdev_call(s->sd, pad, set_fmt, NULL, &sd_fmt); + return 0; +} + +static int cobalt_enum_input(struct file *file, void *priv_fh, + struct v4l2_input *inp) +{ + struct cobalt_stream *s = video_drvdata(file); + + if (inp->index > 1) + return -EINVAL; + if (inp->index == 0) + snprintf(inp->name, sizeof(inp->name), + "HDMI-%d", s->video_channel); + else + snprintf(inp->name, sizeof(inp->name), + "Generator-%d", s->video_channel); + inp->type = V4L2_INPUT_TYPE_CAMERA; + inp->capabilities = V4L2_IN_CAP_DV_TIMINGS; + if (inp->index == 1) + return 0; + return v4l2_subdev_call(s->sd, + video, g_input_status, &inp->status); +} + +static int cobalt_g_input(struct file *file, void *priv_fh, unsigned int *i) +{ + struct cobalt_stream *s = video_drvdata(file); + + *i = s->input; + return 0; +} + +static int cobalt_s_input(struct file *file, void *priv_fh, unsigned int i) +{ + struct cobalt_stream *s = video_drvdata(file); + + if (i >= 2) + return -EINVAL; + if (vb2_is_busy(&s->q)) + return -EBUSY; + s->input = i; + + cobalt_enable_input(s); + + if (s->input == 1) /* Test Pattern Generator */ + return 0; + + return v4l2_subdev_call(s->sd, video, s_routing, + ADV76XX_PAD_HDMI_PORT_A, 0, 0); +} + +static int cobalt_enum_output(struct file *file, void *priv_fh, + struct v4l2_output *out) +{ + if (out->index) + return -EINVAL; + snprintf(out->name, sizeof(out->name), "HDMI-%d", out->index); + out->type = V4L2_OUTPUT_TYPE_ANALOG; + out->capabilities = V4L2_OUT_CAP_DV_TIMINGS; + return 0; +} + +static int cobalt_g_output(struct file *file, void *priv_fh, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int cobalt_s_output(struct file *file, void *priv_fh, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int cobalt_g_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct cobalt_stream *s = video_drvdata(file); + u32 pad = edid->pad; + int ret; + + if (edid->pad >= (s->is_output ? 1 : 2)) + return -EINVAL; + edid->pad = 0; + ret = v4l2_subdev_call(s->sd, pad, get_edid, edid); + edid->pad = pad; + return ret; +} + +static int cobalt_s_edid(struct file *file, void *fh, struct v4l2_edid *edid) +{ + struct cobalt_stream *s = video_drvdata(file); + u32 pad = edid->pad; + int ret; + + if (edid->pad >= 2) + return -EINVAL; + edid->pad = 0; + ret = v4l2_subdev_call(s->sd, pad, set_edid, edid); + edid->pad = pad; + return ret; +} + +static int cobalt_subscribe_event(struct v4l2_fh *fh, + const struct v4l2_event_subscription *sub) +{ + switch (sub->type) { + case V4L2_EVENT_SOURCE_CHANGE: + return v4l2_event_subscribe(fh, sub, 4, NULL); + } + return v4l2_ctrl_subscribe_event(fh, sub); +} + +static int cobalt_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a) +{ + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + a->parm.capture.timeperframe.numerator = 1; + a->parm.capture.timeperframe.denominator = 60; + a->parm.capture.readbuffers = 3; + return 0; +} + +static const struct v4l2_ioctl_ops cobalt_ioctl_ops = { + .vidioc_querycap = cobalt_querycap, + .vidioc_g_parm = cobalt_g_parm, + .vidioc_log_status = cobalt_log_status, + .vidioc_streamon = vb2_ioctl_streamon, + .vidioc_streamoff = vb2_ioctl_streamoff, + .vidioc_enum_input = cobalt_enum_input, + .vidioc_g_input = cobalt_g_input, + .vidioc_s_input = cobalt_s_input, + .vidioc_enum_fmt_vid_cap = cobalt_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = cobalt_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = cobalt_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = cobalt_try_fmt_vid_cap, + .vidioc_enum_output = cobalt_enum_output, + .vidioc_g_output = cobalt_g_output, + .vidioc_s_output = cobalt_s_output, + .vidioc_enum_fmt_vid_out = cobalt_enum_fmt_vid_out, + .vidioc_g_fmt_vid_out = cobalt_g_fmt_vid_out, + .vidioc_s_fmt_vid_out = cobalt_s_fmt_vid_out, + .vidioc_try_fmt_vid_out = cobalt_try_fmt_vid_out, + .vidioc_s_dv_timings = cobalt_s_dv_timings, + .vidioc_g_dv_timings = cobalt_g_dv_timings, + .vidioc_query_dv_timings = cobalt_query_dv_timings, + .vidioc_enum_dv_timings = cobalt_enum_dv_timings, + .vidioc_dv_timings_cap = cobalt_dv_timings_cap, + .vidioc_g_edid = cobalt_g_edid, + .vidioc_s_edid = cobalt_s_edid, + .vidioc_subscribe_event = cobalt_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, + .vidioc_reqbufs = vb2_ioctl_reqbufs, + .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_querybuf = vb2_ioctl_querybuf, + .vidioc_qbuf = vb2_ioctl_qbuf, + .vidioc_dqbuf = vb2_ioctl_dqbuf, + .vidioc_expbuf = vb2_ioctl_expbuf, +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_register = cobalt_g_register, + .vidioc_s_register = cobalt_s_register, +#endif +}; + +static const struct v4l2_ioctl_ops cobalt_ioctl_empty_ops = { +#ifdef CONFIG_VIDEO_ADV_DEBUG + .vidioc_g_register = cobalt_g_register, + .vidioc_s_register = cobalt_s_register, +#endif +}; + +/* Register device nodes */ + +static const struct v4l2_file_operations cobalt_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .unlocked_ioctl = video_ioctl2, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .read = vb2_fop_read, +}; + +static const struct v4l2_file_operations cobalt_out_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .unlocked_ioctl = video_ioctl2, + .release = vb2_fop_release, + .poll = vb2_fop_poll, + .mmap = vb2_fop_mmap, + .write = vb2_fop_write, +}; + +static const struct v4l2_file_operations cobalt_empty_fops = { + .owner = THIS_MODULE, + .open = v4l2_fh_open, + .unlocked_ioctl = video_ioctl2, + .release = v4l2_fh_release, +}; + +static int cobalt_node_register(struct cobalt *cobalt, int node) +{ + static const struct v4l2_dv_timings dv1080p60 = + V4L2_DV_BT_CEA_1920X1080P60; + struct cobalt_stream *s = cobalt->streams + node; + struct video_device *vdev = &s->vdev; + struct vb2_queue *q = &s->q; + int ret; + + mutex_init(&s->lock); + spin_lock_init(&s->irqlock); + + snprintf(vdev->name, sizeof(vdev->name), + "%s-%d", cobalt->v4l2_dev.name, node); + s->width = 1920; + /* Audio frames are just 4 lines of 1920 bytes */ + s->height = s->is_audio ? 4 : 1080; + + if (s->is_audio) { + s->bpp = 1; + s->pixfmt = V4L2_PIX_FMT_GREY; + } else if (s->is_output) { + s->bpp = COBALT_BYTES_PER_PIXEL_RGB32; + s->pixfmt = V4L2_PIX_FMT_BGR32; + } else { + s->bpp = COBALT_BYTES_PER_PIXEL_YUYV; + s->pixfmt = V4L2_PIX_FMT_YUYV; + } + s->colorspace = V4L2_COLORSPACE_SRGB; + s->stride = s->width * s->bpp; + + if (!s->is_audio) { + if (s->is_dummy) + cobalt_warn("Setting up dummy video node %d\n", node); + vdev->v4l2_dev = &cobalt->v4l2_dev; + if (s->is_dummy) + vdev->fops = &cobalt_empty_fops; + else + vdev->fops = s->is_output ? &cobalt_out_fops : + &cobalt_fops; + vdev->release = video_device_release_empty; + vdev->vfl_dir = s->is_output ? VFL_DIR_TX : VFL_DIR_RX; + vdev->lock = &s->lock; + if (s->sd) + vdev->ctrl_handler = s->sd->ctrl_handler; + s->timings = dv1080p60; + v4l2_subdev_call(s->sd, video, s_dv_timings, &s->timings); + if (!s->is_output && s->sd) + cobalt_enable_input(s); + vdev->ioctl_ops = s->is_dummy ? &cobalt_ioctl_empty_ops : + &cobalt_ioctl_ops; + } + + INIT_LIST_HEAD(&s->bufs); + q->type = s->is_output ? V4L2_BUF_TYPE_VIDEO_OUTPUT : + V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; + q->io_modes |= s->is_output ? VB2_WRITE : VB2_READ; + q->drv_priv = s; + q->buf_struct_size = sizeof(struct cobalt_buffer); + q->ops = &cobalt_qops; + q->mem_ops = &vb2_dma_sg_memops; + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + q->min_buffers_needed = 2; + q->lock = &s->lock; + vdev->queue = q; + + video_set_drvdata(vdev, s); + ret = vb2_queue_init(q); + if (!s->is_audio && ret == 0) + ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); + else if (!s->is_dummy) + ret = cobalt_alsa_init(s); + + if (ret < 0) { + if (!s->is_audio) + cobalt_err("couldn't register v4l2 device node %d\n", + node); + return ret; + } + cobalt_info("registered node %d\n", node); + return 0; +} + +/* Initialize v4l2 variables and register v4l2 devices */ +int cobalt_nodes_register(struct cobalt *cobalt) +{ + int node, ret; + + /* Setup V4L2 Devices */ + for (node = 0; node < COBALT_NUM_STREAMS; node++) { + ret = cobalt_node_register(cobalt, node); + if (ret) + return ret; + } + return 0; +} + +/* Unregister v4l2 devices */ +void cobalt_nodes_unregister(struct cobalt *cobalt) +{ + int node; + + /* Teardown all streams */ + for (node = 0; node < COBALT_NUM_STREAMS; node++) { + struct cobalt_stream *s = cobalt->streams + node; + struct video_device *vdev = &s->vdev; + + if (!s->is_audio) + video_unregister_device(vdev); + else if (!s->is_dummy) + cobalt_alsa_exit(s); + } +} |