/* * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation version 2. * * This program is distributed WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vpbe_venc_regs.h" #define VPBE_DISPLAY_DRIVER "vpbe-v4l2" static int debug; #define VPBE_DEFAULT_NUM_BUFS 3 module_param(debug, int, 0644); static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev, struct vpbe_layer *layer); static int venc_is_second_field(struct vpbe_display *disp_dev) { struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; int ret; int val; ret = v4l2_subdev_call(vpbe_dev->venc, core, ioctl, VENC_GET_FLD, &val); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in getting Field ID 0\n"); } return val; } static void vpbe_isr_even_field(struct vpbe_display *disp_obj, struct vpbe_layer *layer) { struct timespec timevalue; if (layer->cur_frm == layer->next_frm) return; ktime_get_ts(&timevalue); layer->cur_frm->vb.v4l2_buf.timestamp.tv_sec = timevalue.tv_sec; layer->cur_frm->vb.v4l2_buf.timestamp.tv_usec = timevalue.tv_nsec / NSEC_PER_USEC; vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_DONE); /* Make cur_frm pointing to next_frm */ layer->cur_frm = layer->next_frm; } static void vpbe_isr_odd_field(struct vpbe_display *disp_obj, struct vpbe_layer *layer) { struct osd_state *osd_device = disp_obj->osd_device; unsigned long addr; spin_lock(&disp_obj->dma_queue_lock); if (list_empty(&layer->dma_queue) || (layer->cur_frm != layer->next_frm)) { spin_unlock(&disp_obj->dma_queue_lock); return; } /* * one field is displayed configure * the next frame if it is available * otherwise hold on current frame * Get next from the buffer queue */ layer->next_frm = list_entry(layer->dma_queue.next, struct vpbe_disp_buffer, list); /* Remove that from the buffer queue */ list_del(&layer->next_frm->list); spin_unlock(&disp_obj->dma_queue_lock); /* Mark state of the frame to active */ layer->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb, 0); osd_device->ops.start_layer(osd_device, layer->layer_info.id, addr, disp_obj->cbcr_ofst); } /* interrupt service routine */ static irqreturn_t venc_isr(int irq, void *arg) { struct vpbe_display *disp_dev = (struct vpbe_display *)arg; struct vpbe_layer *layer; static unsigned last_event; unsigned event = 0; int fid; int i; if ((NULL == arg) || (NULL == disp_dev->dev[0])) return IRQ_HANDLED; if (venc_is_second_field(disp_dev)) event |= VENC_SECOND_FIELD; else event |= VENC_FIRST_FIELD; if (event == (last_event & ~VENC_END_OF_FRAME)) { /* * If the display is non-interlaced, then we need to flag the * end-of-frame event at every interrupt regardless of the * value of the FIDST bit. We can conclude that the display is * non-interlaced if the value of the FIDST bit is unchanged * from the previous interrupt. */ event |= VENC_END_OF_FRAME; } else if (event == VENC_SECOND_FIELD) { /* end-of-frame for interlaced display */ event |= VENC_END_OF_FRAME; } last_event = event; for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { layer = disp_dev->dev[i]; /* If streaming is started in this layer */ if (!layer->started) continue; if (layer->layer_first_int) { layer->layer_first_int = 0; continue; } /* Check the field format */ if ((V4L2_FIELD_NONE == layer->pix_fmt.field) && (event & VENC_END_OF_FRAME)) { /* Progressive mode */ vpbe_isr_even_field(disp_dev, layer); vpbe_isr_odd_field(disp_dev, layer); } else { /* Interlaced mode */ layer->field_id ^= 1; if (event & VENC_FIRST_FIELD) fid = 0; else fid = 1; /* * If field id does not match with store * field id */ if (fid != layer->field_id) { /* Make them in sync */ layer->field_id = fid; continue; } /* * device field id and local field id are * in sync. If this is even field */ if (0 == fid) vpbe_isr_even_field(disp_dev, layer); else /* odd field */ vpbe_isr_odd_field(disp_dev, layer); } } return IRQ_HANDLED; } /* * vpbe_buffer_prepare() * This is the callback function called from vb2_qbuf() function * the buffer is prepared and user space virtual address is converted into * physical address */ static int vpbe_buffer_prepare(struct vb2_buffer *vb) { struct vb2_queue *q = vb->vb2_queue; struct vpbe_layer *layer = vb2_get_drv_priv(q); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; unsigned long addr; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_prepare\n"); vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage); if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) return -EINVAL; addr = vb2_dma_contig_plane_dma_addr(vb, 0); if (!IS_ALIGNED(addr, 8)) { v4l2_err(&vpbe_dev->v4l2_dev, "buffer_prepare:offset is not aligned to 32 bytes\n"); return -EINVAL; } return 0; } /* * vpbe_buffer_setup() * This function allocates memory for the buffers */ static int vpbe_buffer_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) { /* Get the file handle object and layer object */ struct vpbe_layer *layer = vb2_get_drv_priv(vq); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n"); /* Store number of buffers allocated in numbuffer member */ if (*nbuffers < VPBE_DEFAULT_NUM_BUFS) *nbuffers = layer->numbuffers = VPBE_DEFAULT_NUM_BUFS; *nplanes = 1; sizes[0] = layer->pix_fmt.sizeimage; alloc_ctxs[0] = layer->alloc_ctx; return 0; } /* * vpbe_buffer_queue() * This function adds the buffer to DMA queue */ static void vpbe_buffer_queue(struct vb2_buffer *vb) { /* Get the file handle object and layer object */ struct vpbe_disp_buffer *buf = container_of(vb, struct vpbe_disp_buffer, vb); struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue); struct vpbe_display *disp = layer->disp_dev; struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; unsigned long flags; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_queue\n"); /* add the buffer to the DMA queue */ spin_lock_irqsave(&disp->dma_queue_lock, flags); list_add_tail(&buf->list, &layer->dma_queue); spin_unlock_irqrestore(&disp->dma_queue_lock, flags); } static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpbe_layer *layer = vb2_get_drv_priv(vq); int ret; /* Get the next frame from the buffer queue */ layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next, struct vpbe_disp_buffer, list); /* Remove buffer from the buffer queue */ list_del(&layer->cur_frm->list); /* Mark state of the current frame to active */ layer->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE; /* Initialize field_id and started member */ layer->field_id = 0; /* Set parameters in OSD and VENC */ ret = vpbe_set_osd_display_params(layer->disp_dev, layer); if (ret < 0) { struct vpbe_disp_buffer *buf, *tmp; vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_QUEUED); list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) { list_del(&buf->list); vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); } return ret; } /* * if request format is yuv420 semiplanar, need to * enable both video windows */ layer->started = 1; layer->layer_first_int = 1; return ret; } static void vpbe_stop_streaming(struct vb2_queue *vq) { struct vpbe_layer *layer = vb2_get_drv_priv(vq); struct vpbe_display *disp = layer->disp_dev; unsigned long flags; if (!vb2_is_streaming(vq)) return; /* release all active buffers */ spin_lock_irqsave(&disp->dma_queue_lock, flags); if (layer->cur_frm == layer->next_frm) { vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR); } else { if (layer->cur_frm != NULL) vb2_buffer_done(&layer->cur_frm->vb, VB2_BUF_STATE_ERROR); if (layer->next_frm != NULL) vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR); } while (!list_empty(&layer->dma_queue)) { layer->next_frm = list_entry(layer->dma_queue.next, struct vpbe_disp_buffer, list); list_del(&layer->next_frm->list); vb2_buffer_done(&layer->next_frm->vb, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&disp->dma_queue_lock, flags); } static struct vb2_ops video_qops = { .queue_setup = vpbe_buffer_queue_setup, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .buf_prepare = vpbe_buffer_prepare, .start_streaming = vpbe_start_streaming, .stop_streaming = vpbe_stop_streaming, .buf_queue = vpbe_buffer_queue, }; static struct vpbe_layer* _vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev, struct vpbe_layer *layer) { enum vpbe_display_device_id thiswin, otherwin; thiswin = layer->device_id; otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ? VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0; return disp_dev->dev[otherwin]; } static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev, struct vpbe_layer *layer) { struct osd_layer_config *cfg = &layer->layer_info.config; struct osd_state *osd_device = disp_dev->osd_device; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; unsigned long addr; int ret; addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb, 0); /* Set address in the display registers */ osd_device->ops.start_layer(osd_device, layer->layer_info.id, addr, disp_dev->cbcr_ofst); ret = osd_device->ops.enable_layer(osd_device, layer->layer_info.id, 0); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in enabling osd window layer 0\n"); return -1; } /* Enable the window */ layer->layer_info.enable = 1; if (cfg->pixfmt == PIXFMT_NV12) { struct vpbe_layer *otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); ret = osd_device->ops.enable_layer(osd_device, otherlayer->layer_info.id, 1); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in enabling osd window layer 1\n"); return -1; } otherlayer->layer_info.enable = 1; } return 0; } static void vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev, struct vpbe_layer *layer, int expected_xsize, int expected_ysize) { struct display_layer_info *layer_info = &layer->layer_info; struct v4l2_pix_format *pixfmt = &layer->pix_fmt; struct osd_layer_config *cfg = &layer->layer_info.config; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; int calculated_xsize; int h_exp = 0; int v_exp = 0; int h_scale; int v_scale; v4l2_std_id standard_id = vpbe_dev->current_timings.std_id; /* * Application initially set the image format. Current display * size is obtained from the vpbe display controller. expected_xsize * and expected_ysize are set through S_CROP ioctl. Based on this, * driver will calculate the scale factors for vertical and * horizontal direction so that the image is displayed scaled * and expanded. Application uses expansion to display the image * in a square pixel. Otherwise it is displayed using displays * pixel aspect ratio.It is expected that application chooses * the crop coordinates for cropped or scaled display. if crop * size is less than the image size, it is displayed cropped or * it is displayed scaled and/or expanded. * * to begin with, set the crop window same as expected. Later we * will override with scaled window size */ cfg->xsize = pixfmt->width; cfg->ysize = pixfmt->height; layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */ layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */ layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */ layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */ if (pixfmt->width < expected_xsize) { h_scale = vpbe_dev->current_timings.xres / pixfmt->width; if (h_scale < 2) h_scale = 1; else if (h_scale >= 4) h_scale = 4; else h_scale = 2; cfg->xsize *= h_scale; if (cfg->xsize < expected_xsize) { if ((standard_id & V4L2_STD_525_60) || (standard_id & V4L2_STD_625_50)) { calculated_xsize = (cfg->xsize * VPBE_DISPLAY_H_EXP_RATIO_N) / VPBE_DISPLAY_H_EXP_RATIO_D; if (calculated_xsize <= expected_xsize) { h_exp = 1; cfg->xsize = calculated_xsize; } } } if (h_scale == 2) layer_info->h_zoom = ZOOM_X2; else if (h_scale == 4) layer_info->h_zoom = ZOOM_X4; if (h_exp) layer_info->h_exp = H_EXP_9_OVER_8; } else { /* no scaling, only cropping. Set display area to crop area */ cfg->xsize = expected_xsize; } if (pixfmt->height < expected_ysize) { v_scale = expected_ysize / pixfmt->height; if (v_scale < 2) v_scale = 1; else if (v_scale >= 4) v_scale = 4; else v_scale = 2; cfg->ysize *= v_scale; if (cfg->ysize < expected_ysize) { if ((standard_id & V4L2_STD_625_50)) { calculated_xsize = (cfg->ysize * VPBE_DISPLAY_V_EXP_RATIO_N) / VPBE_DISPLAY_V_EXP_RATIO_D; if (calculated_xsize <= expected_ysize) { v_exp = 1; cfg->ysize = calculated_xsize; } } } if (v_scale == 2) layer_info->v_zoom = ZOOM_X2; else if (v_scale == 4) layer_info->v_zoom = ZOOM_X4; if (v_exp) layer_info->h_exp = V_EXP_6_OVER_5; } else { /* no scaling, only cropping. Set display area to crop area */ cfg->ysize = expected_ysize; } v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "crop display xsize = %d, ysize = %d\n", cfg->xsize, cfg->ysize); } static void vpbe_disp_adj_position(struct vpbe_display *disp_dev, struct vpbe_layer *layer, int top, int left) { struct osd_layer_config *cfg = &layer->layer_info.config; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; cfg->xpos = min((unsigned int)left, vpbe_dev->current_timings.xres - cfg->xsize); cfg->ypos = min((unsigned int)top, vpbe_dev->current_timings.yres - cfg->ysize); v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "new xpos = %d, ypos = %d\n", cfg->xpos, cfg->ypos); } static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev, struct v4l2_rect *c) { struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; if ((c->width == 0) || ((c->width + c->left) > vpbe_dev->current_timings.xres)) c->width = vpbe_dev->current_timings.xres - c->left; if ((c->height == 0) || ((c->height + c->top) > vpbe_dev->current_timings.yres)) c->height = vpbe_dev->current_timings.yres - c->top; /* window height must be even for interlaced display */ if (vpbe_dev->current_timings.interlaced) c->height &= (~0x01); } /** * vpbe_try_format() * If user application provides width and height, and have bytesperline set * to zero, driver calculates bytesperline and sizeimage based on hardware * limits. */ static int vpbe_try_format(struct vpbe_display *disp_dev, struct v4l2_pix_format *pixfmt, int check) { struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; int min_height = 1; int min_width = 32; int max_height; int max_width; int bpp; if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) && (pixfmt->pixelformat != V4L2_PIX_FMT_NV12)) /* choose default as V4L2_PIX_FMT_UYVY */ pixfmt->pixelformat = V4L2_PIX_FMT_UYVY; /* Check the field format */ if ((pixfmt->field != V4L2_FIELD_INTERLACED) && (pixfmt->field != V4L2_FIELD_NONE)) { if (vpbe_dev->current_timings.interlaced) pixfmt->field = V4L2_FIELD_INTERLACED; else pixfmt->field = V4L2_FIELD_NONE; } if (pixfmt->field == V4L2_FIELD_INTERLACED) min_height = 2; if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) bpp = 1; else bpp = 2; max_width = vpbe_dev->current_timings.xres; max_height = vpbe_dev->current_timings.yres; min_width /= bpp; if (!pixfmt->width || (pixfmt->width < min_width) || (pixfmt->width > max_width)) { pixfmt->width = vpbe_dev->current_timings.xres; } if (!pixfmt->height || (pixfmt->height < min_height) || (pixfmt->height > max_height)) { pixfmt->height = vpbe_dev->current_timings.yres; } if (pixfmt->bytesperline < (pixfmt->width * bpp)) pixfmt->bytesperline = pixfmt->width * bpp; /* Make the bytesperline 32 byte aligned */ pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31); if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height + (pixfmt->bytesperline * pixfmt->height >> 1); else pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; return 0; } static int vpbe_display_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; cap->version = VPBE_DISPLAY_VERSION_CODE; cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; snprintf(cap->driver, sizeof(cap->driver), "%s", dev_name(vpbe_dev->pdev)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", dev_name(vpbe_dev->pdev)); strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card)); return 0; } static int vpbe_display_s_crop(struct file *file, void *priv, const struct v4l2_crop *crop) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; struct osd_layer_config *cfg = &layer->layer_info.config; struct osd_state *osd_device = disp_dev->osd_device; struct v4l2_rect rect = crop->c; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_CROP, layer id = %d\n", layer->device_id); if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n"); return -EINVAL; } if (rect.top < 0) rect.top = 0; if (rect.left < 0) rect.left = 0; vpbe_disp_check_window_params(disp_dev, &rect); osd_device->ops.get_layer_config(osd_device, layer->layer_info.id, cfg); vpbe_disp_calculate_scale_factor(disp_dev, layer, rect.width, rect.height); vpbe_disp_adj_position(disp_dev, layer, rect.top, rect.left); ret = osd_device->ops.set_layer_config(osd_device, layer->layer_info.id, cfg); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in set layer config:\n"); return -EINVAL; } /* apply zooming and h or v expansion */ osd_device->ops.set_zoom(osd_device, layer->layer_info.id, layer->layer_info.h_zoom, layer->layer_info.v_zoom); ret = osd_device->ops.set_vid_expansion(osd_device, layer->layer_info.h_exp, layer->layer_info.v_exp); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in set vid expansion:\n"); return -EINVAL; } if ((layer->layer_info.h_zoom != ZOOM_X1) || (layer->layer_info.v_zoom != ZOOM_X1) || (layer->layer_info.h_exp != H_EXP_OFF) || (layer->layer_info.v_exp != V_EXP_OFF)) /* Enable expansion filter */ osd_device->ops.set_interpolation_filter(osd_device, 1); else osd_device->ops.set_interpolation_filter(osd_device, 0); return 0; } static int vpbe_display_g_crop(struct file *file, void *priv, struct v4l2_crop *crop) { struct vpbe_layer *layer = video_drvdata(file); struct osd_layer_config *cfg = &layer->layer_info.config; struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; struct osd_state *osd_device = layer->disp_dev->osd_device; struct v4l2_rect *rect = &crop->c; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_CROP, layer id = %d\n", layer->device_id); if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n"); return -EINVAL; } osd_device->ops.get_layer_config(osd_device, layer->layer_info.id, cfg); rect->top = cfg->ypos; rect->left = cfg->xpos; rect->width = cfg->xsize; rect->height = cfg->ysize; return 0; } static int vpbe_display_cropcap(struct file *file, void *priv, struct v4l2_cropcap *cropcap) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n"); cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; cropcap->bounds.left = 0; cropcap->bounds.top = 0; cropcap->bounds.width = vpbe_dev->current_timings.xres; cropcap->bounds.height = vpbe_dev->current_timings.yres; cropcap->pixelaspect = vpbe_dev->current_timings.aspect; cropcap->defrect = cropcap->bounds; return 0; } static int vpbe_display_g_fmt(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_FMT, layer id = %d\n", layer->device_id); /* If buffer type is video output */ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n"); return -EINVAL; } /* Fill in the information about format */ fmt->fmt.pix = layer->pix_fmt; return 0; } static int vpbe_display_enum_fmt(struct file *file, void *priv, struct v4l2_fmtdesc *fmt) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; unsigned int index = 0; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_FMT, layer id = %d\n", layer->device_id); if (fmt->index > 1) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n"); return -EINVAL; } /* Fill in the information about format */ index = fmt->index; memset(fmt, 0, sizeof(*fmt)); fmt->index = index; fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; if (index == 0) { strcpy(fmt->description, "YUV 4:2:2 - UYVY"); fmt->pixelformat = V4L2_PIX_FMT_UYVY; } else { strcpy(fmt->description, "Y/CbCr 4:2:0"); fmt->pixelformat = V4L2_PIX_FMT_NV12; } return 0; } static int vpbe_display_s_fmt(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; struct osd_layer_config *cfg = &layer->layer_info.config; struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; struct osd_state *osd_device = disp_dev->osd_device; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_FMT, layer id = %d\n", layer->device_id); /* If streaming is started, return error */ if (layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n"); return -EBUSY; } if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n"); return -EINVAL; } /* Check for valid pixel format */ ret = vpbe_try_format(disp_dev, pixfmt, 1); if (ret) return ret; /* YUV420 is requested, check availability of the other video window */ layer->pix_fmt = *pixfmt; if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) { struct vpbe_layer *otherlayer; otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); /* if other layer is available, only * claim it, do not configure it */ ret = osd_device->ops.request_layer(osd_device, otherlayer->layer_info.id); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Display Manager failed to allocate layer\n"); return -EBUSY; } } /* Get osd layer config */ osd_device->ops.get_layer_config(osd_device, layer->layer_info.id, cfg); /* Store the pixel format in the layer object */ cfg->xsize = pixfmt->width; cfg->ysize = pixfmt->height; cfg->line_length = pixfmt->bytesperline; cfg->ypos = 0; cfg->xpos = 0; cfg->interlaced = vpbe_dev->current_timings.interlaced; if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat) cfg->pixfmt = PIXFMT_YCBCRI; /* Change of the default pixel format for both video windows */ if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) { struct vpbe_layer *otherlayer; cfg->pixfmt = PIXFMT_NV12; otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); otherlayer->layer_info.config.pixfmt = PIXFMT_NV12; } /* Set the layer config in the osd window */ ret = osd_device->ops.set_layer_config(osd_device, layer->layer_info.id, cfg); if (ret < 0) { v4l2_err(&vpbe_dev->v4l2_dev, "Error in S_FMT params:\n"); return -EINVAL; } /* Readback and fill the local copy of current pix format */ osd_device->ops.get_layer_config(osd_device, layer->layer_info.id, cfg); return 0; } static int vpbe_display_try_fmt(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n"); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) { v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n"); return -EINVAL; } /* Check for valid field format */ return vpbe_try_format(disp_dev, pixfmt, 0); } /** * vpbe_display_s_std - Set the given standard in the encoder * * Sets the standard if supported by the current encoder. Return the status. * 0 - success & -EINVAL on error */ static int vpbe_display_s_std(struct file *file, void *priv, v4l2_std_id std_id) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n"); /* If streaming is started, return error */ if (layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n"); return -EBUSY; } if (NULL != vpbe_dev->ops.s_std) { ret = vpbe_dev->ops.s_std(vpbe_dev, std_id); if (ret) { v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set standard for sub devices\n"); return -EINVAL; } } else { return -EINVAL; } return 0; } /** * vpbe_display_g_std - Get the standard in the current encoder * * Get the standard in the current encoder. Return the status. 0 - success * -EINVAL on error */ static int vpbe_display_g_std(struct file *file, void *priv, v4l2_std_id *std_id) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n"); /* Get the standard from the current encoder */ if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) { *std_id = vpbe_dev->current_timings.std_id; return 0; } return -EINVAL; } /** * vpbe_display_enum_output - enumerate outputs * * Enumerates the outputs available at the vpbe display * returns the status, -EINVAL if end of output list */ static int vpbe_display_enum_output(struct file *file, void *priv, struct v4l2_output *output) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n"); /* Enumerate outputs */ if (NULL == vpbe_dev->ops.enum_outputs) return -EINVAL; ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output); if (ret) { v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "Failed to enumerate outputs\n"); return -EINVAL; } return 0; } /** * vpbe_display_s_output - Set output to * the output specified by the index */ static int vpbe_display_s_output(struct file *file, void *priv, unsigned int i) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n"); /* If streaming is started, return error */ if (layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n"); return -EBUSY; } if (NULL == vpbe_dev->ops.set_output) return -EINVAL; ret = vpbe_dev->ops.set_output(vpbe_dev, i); if (ret) { v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set output for sub devices\n"); return -EINVAL; } return 0; } /** * vpbe_display_g_output - Get output from subdevice * for a given by the index */ static int vpbe_display_g_output(struct file *file, void *priv, unsigned int *i) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n"); /* Get the standard from the current encoder */ *i = vpbe_dev->current_out_index; return 0; } /** * vpbe_display_enum_dv_timings - Enumerate the dv timings * * enum the timings in the current encoder. Return the status. 0 - success * -EINVAL on error */ static int vpbe_display_enum_dv_timings(struct file *file, void *priv, struct v4l2_enum_dv_timings *timings) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n"); /* Enumerate outputs */ if (NULL == vpbe_dev->ops.enum_dv_timings) return -EINVAL; ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings); if (ret) { v4l2_err(&vpbe_dev->v4l2_dev, "Failed to enumerate dv timings info\n"); return -EINVAL; } return 0; } /** * vpbe_display_s_dv_timings - Set the dv timings * * Set the timings in the current encoder. Return the status. 0 - success * -EINVAL on error */ static int vpbe_display_s_dv_timings(struct file *file, void *priv, struct v4l2_dv_timings *timings) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n"); /* If streaming is started, return error */ if (layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n"); return -EBUSY; } /* Set the given standard in the encoder */ if (!vpbe_dev->ops.s_dv_timings) return -EINVAL; ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings); if (ret) { v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set the dv timings info\n"); return -EINVAL; } return 0; } /** * vpbe_display_g_dv_timings - Set the dv timings * * Get the timings in the current encoder. Return the status. 0 - success * -EINVAL on error */ static int vpbe_display_g_dv_timings(struct file *file, void *priv, struct v4l2_dv_timings *dv_timings) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n"); /* Get the given standard in the encoder */ if (vpbe_dev->current_timings.timings_type & VPBE_ENC_DV_TIMINGS) { *dv_timings = vpbe_dev->current_timings.dv_timings; } else { return -EINVAL; } return 0; } static int vpbe_display_streamoff(struct file *file, void *priv, enum v4l2_buf_type buf_type) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; struct osd_state *osd_device = layer->disp_dev->osd_device; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMOFF,layer id = %d\n", layer->device_id); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } /* If streaming is not started, return error */ if (!layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "streaming not started in layer" " id = %d\n", layer->device_id); return -EINVAL; } osd_device->ops.disable_layer(osd_device, layer->layer_info.id); layer->started = 0; ret = vb2_streamoff(&layer->buffer_queue, buf_type); return ret; } static int vpbe_display_streamon(struct file *file, void *priv, enum v4l2_buf_type buf_type) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; struct osd_state *osd_device = disp_dev->osd_device; int ret; osd_device->ops.disable_layer(osd_device, layer->layer_info.id); v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMON, layerid=%d\n", layer->device_id); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } /* If Streaming is already started, return error */ if (layer->started) { v4l2_err(&vpbe_dev->v4l2_dev, "layer is already streaming\n"); return -EBUSY; } /* * Call vb2_streamon to start streaming * in videobuf */ ret = vb2_streamon(&layer->buffer_queue, buf_type); if (ret) { v4l2_err(&vpbe_dev->v4l2_dev, "error in vb2_streamon\n"); return ret; } return ret; } static int vpbe_display_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; int ret; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_DQBUF, layer id = %d\n", layer->device_id); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } if (file->f_flags & O_NONBLOCK) /* Call videobuf_dqbuf for non blocking mode */ ret = vb2_dqbuf(&layer->buffer_queue, buf, 1); else /* Call videobuf_dqbuf for blocking mode */ ret = vb2_dqbuf(&layer->buffer_queue, buf, 0); return ret; } static int vpbe_display_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_QBUF, layer id = %d\n", layer->device_id); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } return vb2_qbuf(&layer->buffer_queue, p); } static int vpbe_display_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_QUERYBUF, layer id = %d\n", layer->device_id); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } /* Call vb2_querybuf to get information */ return vb2_querybuf(&layer->buffer_queue, buf); } static int vpbe_display_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *req_buf) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n"); if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) { v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n"); return -EINVAL; } /* If io users of the layer is not zero, return error */ if (0 != layer->io_usrs) { v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n"); return -EBUSY; } /* Increment io usrs member of layer object to 1 */ layer->io_usrs = 1; /* Store type of memory requested in layer object */ layer->memory = req_buf->memory; /* Allocate buffers */ return vb2_reqbufs(&layer->buffer_queue, req_buf); } /* * vpbe_display_open() * It creates object of file handle structure and stores it in private_data * member of filepointer */ static int vpbe_display_open(struct file *file) { struct vpbe_layer *layer = video_drvdata(file); struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; struct osd_state *osd_device = disp_dev->osd_device; int err; /* creating context for file descriptor */ err = v4l2_fh_open(file); if (err) { v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n"); return err; } /* leaving if layer is already initialized */ if (!v4l2_fh_is_singular_file(file)) return err; if (!layer->usrs) { if (mutex_lock_interruptible(&layer->opslock)) return -ERESTARTSYS; /* First claim the layer for this device */ err = osd_device->ops.request_layer(osd_device, layer->layer_info.id); mutex_unlock(&layer->opslock); if (err < 0) { /* Couldn't get layer */ v4l2_err(&vpbe_dev->v4l2_dev, "Display Manager failed to allocate layer\n"); v4l2_fh_release(file); return -EINVAL; } } /* Increment layer usrs counter */ layer->usrs++; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe display device opened successfully\n"); return 0; } /* * vpbe_display_release() * This function deletes buffer queue, frees the buffers and the davinci * display file * handle */ static int vpbe_display_release(struct file *file) { struct vpbe_layer *layer = video_drvdata(file); struct osd_layer_config *cfg = &layer->layer_info.config; struct vpbe_display *disp_dev = layer->disp_dev; struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; struct osd_state *osd_device = disp_dev->osd_device; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n"); mutex_lock(&layer->opslock); /* Reset io_usrs member of layer object */ layer->io_usrs = 0; osd_device->ops.disable_layer(osd_device, layer->layer_info.id); layer->started = 0; /* Decrement layer usrs counter */ layer->usrs--; /* If this file handle has initialize encoder device, reset it */ if (!layer->usrs) { if (cfg->pixfmt == PIXFMT_NV12) { struct vpbe_layer *otherlayer; otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer); osd_device->ops.disable_layer(osd_device, otherlayer->layer_info.id); osd_device->ops.release_layer(osd_device, otherlayer->layer_info.id); } osd_device->ops.disable_layer(osd_device, layer->layer_info.id); osd_device->ops.release_layer(osd_device, layer->layer_info.id); } _vb2_fop_release(file, NULL); mutex_unlock(&layer->opslock); disp_dev->cbcr_ofst = 0; return 0; } /* vpbe capture ioctl operations */ static const struct v4l2_ioctl_ops vpbe_ioctl_ops = { .vidioc_querycap = vpbe_display_querycap, .vidioc_g_fmt_vid_out = vpbe_display_g_fmt, .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt, .vidioc_s_fmt_vid_out = vpbe_display_s_fmt, .vidioc_try_fmt_vid_out = vpbe_display_try_fmt, .vidioc_reqbufs = vpbe_display_reqbufs, .vidioc_querybuf = vpbe_display_querybuf, .vidioc_qbuf = vpbe_display_qbuf, .vidioc_dqbuf = vpbe_display_dqbuf, .vidioc_streamon = vpbe_display_streamon, .vidioc_streamoff = vpbe_display_streamoff, .vidioc_cropcap = vpbe_display_cropcap, .vidioc_g_crop = vpbe_display_g_crop, .vidioc_s_crop = vpbe_display_s_crop, .vidioc_s_std = vpbe_display_s_std, .vidioc_g_std = vpbe_display_g_std, .vidioc_enum_output = vpbe_display_enum_output, .vidioc_s_output = vpbe_display_s_output, .vidioc_g_output = vpbe_display_g_output, .vidioc_s_dv_timings = vpbe_display_s_dv_timings, .vidioc_g_dv_timings = vpbe_display_g_dv_timings, .vidioc_enum_dv_timings = vpbe_display_enum_dv_timings, }; static struct v4l2_file_operations vpbe_fops = { .owner = THIS_MODULE, .open = vpbe_display_open, .release = vpbe_display_release, .unlocked_ioctl = video_ioctl2, .mmap = vb2_fop_mmap, .poll = vb2_fop_poll, }; static int vpbe_device_get(struct device *dev, void *data) { struct platform_device *pdev = to_platform_device(dev); struct vpbe_display *vpbe_disp = data; if (strcmp("vpbe_controller", pdev->name) == 0) vpbe_disp->vpbe_dev = platform_get_drvdata(pdev); if (strstr(pdev->name, "vpbe-osd") != NULL) vpbe_disp->osd_device = platform_get_drvdata(pdev); return 0; } static int init_vpbe_layer(int i, struct vpbe_display *disp_dev, struct platform_device *pdev) { struct vpbe_layer *vpbe_display_layer = NULL; struct video_device *vbd = NULL; /* Allocate memory for four plane display objects */ disp_dev->dev[i] = kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL); /* If memory allocation fails, return error */ if (!disp_dev->dev[i]) { printk(KERN_ERR "ran out of memory\n"); return -ENOMEM; } spin_lock_init(&disp_dev->dev[i]->irqlock); mutex_init(&disp_dev->dev[i]->opslock); /* Get the pointer to the layer object */ vpbe_display_layer = disp_dev->dev[i]; vbd = &vpbe_display_layer->video_dev; /* Initialize field of video device */ vbd->release = video_device_release_empty; vbd->fops = &vpbe_fops; vbd->ioctl_ops = &vpbe_ioctl_ops; vbd->minor = -1; vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev; vbd->lock = &vpbe_display_layer->opslock; vbd->vfl_dir = VFL_DIR_TX; if (disp_dev->vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50); snprintf(vbd->name, sizeof(vbd->name), "DaVinci_VPBE Display_DRIVER_V%d.%d.%d", (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff, (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff, (VPBE_DISPLAY_VERSION_CODE) & 0xff); vpbe_display_layer->device_id = i; vpbe_display_layer->layer_info.id = ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1); return 0; } static int register_device(struct vpbe_layer *vpbe_display_layer, struct vpbe_display *disp_dev, struct platform_device *pdev) { int err; v4l2_info(&disp_dev->vpbe_dev->v4l2_dev, "Trying to register VPBE display device.\n"); v4l2_info(&disp_dev->vpbe_dev->v4l2_dev, "layer=%x,layer->video_dev=%x\n", (int)vpbe_display_layer, (int)&vpbe_display_layer->video_dev); vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue; err = video_register_device(&vpbe_display_layer->video_dev, VFL_TYPE_GRABBER, -1); if (err) return -ENODEV; vpbe_display_layer->disp_dev = disp_dev; /* set the driver data in platform device */ platform_set_drvdata(pdev, disp_dev); video_set_drvdata(&vpbe_display_layer->video_dev, vpbe_display_layer); return 0; } /* * vpbe_display_probe() * This function creates device entries by register itself to the V4L2 driver * and initializes fields of each layer objects */ static int vpbe_display_probe(struct platform_device *pdev) { struct vpbe_display *disp_dev; struct v4l2_device *v4l2_dev; struct resource *res = NULL; struct vb2_queue *q; int k; int i; int err; int irq; printk(KERN_DEBUG "vpbe_display_probe\n"); /* Allocate memory for vpbe_display */ disp_dev = devm_kzalloc(&pdev->dev, sizeof(struct vpbe_display), GFP_KERNEL); if (!disp_dev) return -ENOMEM; spin_lock_init(&disp_dev->dma_queue_lock); /* * Scan all the platform devices to find the vpbe * controller device and get the vpbe_dev object */ err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev, vpbe_device_get); if (err < 0) return err; v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev; /* Initialize the vpbe display controller */ if (NULL != disp_dev->vpbe_dev->ops.initialize) { err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev, disp_dev->vpbe_dev); if (err) { v4l2_err(v4l2_dev, "Error initing vpbe\n"); err = -ENOMEM; goto probe_out; } } for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { if (init_vpbe_layer(i, disp_dev, pdev)) { err = -ENODEV; goto probe_out; } } res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n"); err = -ENODEV; goto probe_out; } irq = res->start; err = devm_request_irq(&pdev->dev, irq, venc_isr, 0, VPBE_DISPLAY_DRIVER, disp_dev); if (err) { v4l2_err(v4l2_dev, "VPBE IRQ request failed\n"); goto probe_out; } for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { /* initialize vb2 queue */ q = &disp_dev->dev[i]->buffer_queue; memset(q, 0, sizeof(*q)); q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; q->io_modes = VB2_MMAP | VB2_USERPTR; q->drv_priv = disp_dev->dev[i]; q->ops = &video_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct vpbe_disp_buffer); q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 1; q->lock = &disp_dev->dev[i]->opslock; err = vb2_queue_init(q); if (err) { v4l2_err(v4l2_dev, "vb2_queue_init() failed\n"); goto probe_out; } disp_dev->dev[i]->alloc_ctx = vb2_dma_contig_init_ctx(disp_dev->vpbe_dev->pdev); if (IS_ERR(disp_dev->dev[i]->alloc_ctx)) { v4l2_err(v4l2_dev, "Failed to get the context\n"); err = PTR_ERR(disp_dev->dev[i]->alloc_ctx); goto probe_out; } INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue); if (register_device(disp_dev->dev[i], disp_dev, pdev)) { err = -ENODEV; goto probe_out; } } v4l2_dbg(1, debug, v4l2_dev, "Successfully completed the probing of vpbe v4l2 device\n"); return 0; probe_out: for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) { /* Unregister video device */ if (disp_dev->dev[k] != NULL) { vb2_dma_contig_cleanup_ctx(disp_dev->dev[k]->alloc_ctx); video_unregister_device(&disp_dev->dev[k]->video_dev); kfree(disp_dev->dev[k]); } } return err; } /* * vpbe_display_remove() * It un-register hardware layer from V4L2 driver */ static int vpbe_display_remove(struct platform_device *pdev) { struct vpbe_layer *vpbe_display_layer; struct vpbe_display *disp_dev = platform_get_drvdata(pdev); struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev; int i; v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n"); /* deinitialize the vpbe display controller */ if (NULL != vpbe_dev->ops.deinitialize) vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev); /* un-register device */ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { /* Get the pointer to the layer object */ vpbe_display_layer = disp_dev->dev[i]; vb2_dma_contig_cleanup_ctx(vpbe_display_layer->alloc_ctx); /* Unregister video device */ video_unregister_device(&vpbe_display_layer->video_dev); } for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) { kfree(disp_dev->dev[i]); disp_dev->dev[i] = NULL; } return 0; } static struct platform_driver vpbe_display_driver = { .driver = { .name = VPBE_DISPLAY_DRIVER, .owner = THIS_MODULE, .bus = &platform_bus_type, }, .probe = vpbe_display_probe, .remove = vpbe_display_remove, }; module_platform_driver(vpbe_display_driver); MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Texas Instruments");