| /* |
| * vpif-display - VPIF display driver |
| * Display driver for TI DaVinci VPIF |
| * |
| * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ |
| * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.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 .as is. 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 <linux/interrupt.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| |
| #include <media/v4l2-ioctl.h> |
| |
| #include "vpif.h" |
| #include "vpif_display.h" |
| |
| MODULE_DESCRIPTION("TI DaVinci VPIF Display driver"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(VPIF_DISPLAY_VERSION); |
| |
| #define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50) |
| |
| #define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg) |
| #define vpif_dbg(level, debug, fmt, arg...) \ |
| v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg) |
| |
| static int debug = 1; |
| |
| module_param(debug, int, 0644); |
| |
| MODULE_PARM_DESC(debug, "Debug level 0-1"); |
| |
| #define VPIF_DRIVER_NAME "vpif_display" |
| |
| /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */ |
| static int ycmux_mode; |
| |
| static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} }; |
| |
| static struct vpif_device vpif_obj = { {NULL} }; |
| static struct device *vpif_dev; |
| static void vpif_calculate_offsets(struct channel_obj *ch); |
| static void vpif_config_addr(struct channel_obj *ch, int muxmode); |
| |
| static inline struct vpif_disp_buffer *to_vpif_buffer(struct vb2_buffer *vb) |
| { |
| return container_of(vb, struct vpif_disp_buffer, vb); |
| } |
| |
| /** |
| * vpif_buffer_prepare : callback function for buffer prepare |
| * @vb: ptr to vb2_buffer |
| * |
| * This is the callback function for buffer prepare when vb2_qbuf() |
| * function is called. The buffer is prepared and user space virtual address |
| * or user address is converted into physical address |
| */ |
| static int vpif_buffer_prepare(struct vb2_buffer *vb) |
| { |
| struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); |
| struct common_obj *common; |
| |
| common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage); |
| if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) |
| return -EINVAL; |
| |
| vb->v4l2_buf.field = common->fmt.fmt.pix.field; |
| |
| if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) { |
| unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0); |
| |
| if (!ISALIGNED(addr + common->ytop_off) || |
| !ISALIGNED(addr + common->ybtm_off) || |
| !ISALIGNED(addr + common->ctop_off) || |
| !ISALIGNED(addr + common->cbtm_off)) { |
| vpif_err("buffer offset not aligned to 8 bytes\n"); |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * vpif_buffer_queue_setup : Callback function for buffer setup. |
| * @vq: vb2_queue ptr |
| * @fmt: v4l2 format |
| * @nbuffers: ptr to number of buffers requested by application |
| * @nplanes:: contains number of distinct video planes needed to hold a frame |
| * @sizes[]: contains the size (in bytes) of each plane. |
| * @alloc_ctxs: ptr to allocation context |
| * |
| * This callback function is called when reqbuf() is called to adjust |
| * the buffer count and buffer size |
| */ |
| static int vpif_buffer_queue_setup(struct vb2_queue *vq, |
| const struct v4l2_format *fmt, |
| unsigned int *nbuffers, unsigned int *nplanes, |
| unsigned int sizes[], void *alloc_ctxs[]) |
| { |
| struct channel_obj *ch = vb2_get_drv_priv(vq); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage) |
| return -EINVAL; |
| |
| if (vq->num_buffers + *nbuffers < 3) |
| *nbuffers = 3 - vq->num_buffers; |
| |
| *nplanes = 1; |
| sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage; |
| alloc_ctxs[0] = common->alloc_ctx; |
| |
| /* Calculate the offset for Y and C data in the buffer */ |
| vpif_calculate_offsets(ch); |
| |
| return 0; |
| } |
| |
| /** |
| * vpif_buffer_queue : Callback function to add buffer to DMA queue |
| * @vb: ptr to vb2_buffer |
| * |
| * This callback fucntion queues the buffer to DMA engine |
| */ |
| static void vpif_buffer_queue(struct vb2_buffer *vb) |
| { |
| struct vpif_disp_buffer *buf = to_vpif_buffer(vb); |
| struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue); |
| struct common_obj *common; |
| unsigned long flags; |
| |
| common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| /* add the buffer to the DMA queue */ |
| spin_lock_irqsave(&common->irqlock, flags); |
| list_add_tail(&buf->list, &common->dma_queue); |
| spin_unlock_irqrestore(&common->irqlock, flags); |
| } |
| |
| /** |
| * vpif_start_streaming : Starts the DMA engine for streaming |
| * @vb: ptr to vb2_buffer |
| * @count: number of buffers |
| */ |
| static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) |
| { |
| struct vpif_display_config *vpif_config_data = |
| vpif_dev->platform_data; |
| struct channel_obj *ch = vb2_get_drv_priv(vq); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct vpif_params *vpif = &ch->vpifparams; |
| struct vpif_disp_buffer *buf, *tmp; |
| unsigned long addr, flags; |
| int ret; |
| |
| spin_lock_irqsave(&common->irqlock, flags); |
| |
| /* Initialize field_id */ |
| ch->field_id = 0; |
| |
| /* clock settings */ |
| if (vpif_config_data->set_clock) { |
| ret = vpif_config_data->set_clock(ch->vpifparams.std_info. |
| ycmux_mode, ch->vpifparams.std_info.hd_sd); |
| if (ret < 0) { |
| vpif_err("can't set clock\n"); |
| goto err; |
| } |
| } |
| |
| /* set the parameters and addresses */ |
| ret = vpif_set_video_params(vpif, ch->channel_id + 2); |
| if (ret < 0) |
| goto err; |
| |
| ycmux_mode = ret; |
| vpif_config_addr(ch, ret); |
| /* Get the next frame from the buffer queue */ |
| common->next_frm = common->cur_frm = |
| list_entry(common->dma_queue.next, |
| struct vpif_disp_buffer, list); |
| |
| list_del(&common->cur_frm->list); |
| spin_unlock_irqrestore(&common->irqlock, flags); |
| /* Mark state of the current frame to active */ |
| common->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE; |
| |
| addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0); |
| common->set_addr((addr + common->ytop_off), |
| (addr + common->ybtm_off), |
| (addr + common->ctop_off), |
| (addr + common->cbtm_off)); |
| |
| /* |
| * Set interrupt for both the fields in VPIF |
| * Register enable channel in VPIF register |
| */ |
| channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1; |
| if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { |
| channel2_intr_assert(); |
| channel2_intr_enable(1); |
| enable_channel2(1); |
| if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en) |
| channel2_clipping_enable(1); |
| } |
| |
| if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) { |
| channel3_intr_assert(); |
| channel3_intr_enable(1); |
| enable_channel3(1); |
| if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en) |
| channel3_clipping_enable(1); |
| } |
| |
| return 0; |
| |
| err: |
| list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) { |
| list_del(&buf->list); |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED); |
| } |
| spin_unlock_irqrestore(&common->irqlock, flags); |
| |
| return ret; |
| } |
| |
| /** |
| * vpif_stop_streaming : Stop the DMA engine |
| * @vq: ptr to vb2_queue |
| * |
| * This callback stops the DMA engine and any remaining buffers |
| * in the DMA queue are released. |
| */ |
| static void vpif_stop_streaming(struct vb2_queue *vq) |
| { |
| struct channel_obj *ch = vb2_get_drv_priv(vq); |
| struct common_obj *common; |
| unsigned long flags; |
| |
| common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| /* Disable channel */ |
| if (VPIF_CHANNEL2_VIDEO == ch->channel_id) { |
| enable_channel2(0); |
| channel2_intr_enable(0); |
| } |
| if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) { |
| enable_channel3(0); |
| channel3_intr_enable(0); |
| } |
| |
| /* release all active buffers */ |
| spin_lock_irqsave(&common->irqlock, flags); |
| if (common->cur_frm == common->next_frm) { |
| vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR); |
| } else { |
| if (common->cur_frm != NULL) |
| vb2_buffer_done(&common->cur_frm->vb, |
| VB2_BUF_STATE_ERROR); |
| if (common->next_frm != NULL) |
| vb2_buffer_done(&common->next_frm->vb, |
| VB2_BUF_STATE_ERROR); |
| } |
| |
| while (!list_empty(&common->dma_queue)) { |
| common->next_frm = list_entry(common->dma_queue.next, |
| struct vpif_disp_buffer, list); |
| list_del(&common->next_frm->list); |
| vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR); |
| } |
| spin_unlock_irqrestore(&common->irqlock, flags); |
| } |
| |
| static struct vb2_ops video_qops = { |
| .queue_setup = vpif_buffer_queue_setup, |
| .wait_prepare = vb2_ops_wait_prepare, |
| .wait_finish = vb2_ops_wait_finish, |
| .buf_prepare = vpif_buffer_prepare, |
| .start_streaming = vpif_start_streaming, |
| .stop_streaming = vpif_stop_streaming, |
| .buf_queue = vpif_buffer_queue, |
| }; |
| |
| static void process_progressive_mode(struct common_obj *common) |
| { |
| unsigned long addr = 0; |
| |
| spin_lock(&common->irqlock); |
| /* Get the next buffer from buffer queue */ |
| common->next_frm = list_entry(common->dma_queue.next, |
| struct vpif_disp_buffer, list); |
| /* Remove that buffer from the buffer queue */ |
| list_del(&common->next_frm->list); |
| spin_unlock(&common->irqlock); |
| /* Mark status of the buffer as active */ |
| common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; |
| |
| /* Set top and bottom field addrs in VPIF registers */ |
| addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0); |
| common->set_addr(addr + common->ytop_off, |
| addr + common->ybtm_off, |
| addr + common->ctop_off, |
| addr + common->cbtm_off); |
| } |
| |
| static void process_interlaced_mode(int fid, struct common_obj *common) |
| { |
| /* device field id and local field id are in sync */ |
| /* If this is even field */ |
| if (0 == fid) { |
| if (common->cur_frm == common->next_frm) |
| return; |
| |
| /* one frame is displayed If next frame is |
| * available, release cur_frm and move on */ |
| /* Copy frame display time */ |
| v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp); |
| /* Change status of the cur_frm */ |
| vb2_buffer_done(&common->cur_frm->vb, |
| VB2_BUF_STATE_DONE); |
| /* Make cur_frm pointing to next_frm */ |
| common->cur_frm = common->next_frm; |
| |
| } else if (1 == fid) { /* odd field */ |
| spin_lock(&common->irqlock); |
| if (list_empty(&common->dma_queue) |
| || (common->cur_frm != common->next_frm)) { |
| spin_unlock(&common->irqlock); |
| return; |
| } |
| spin_unlock(&common->irqlock); |
| /* one field is displayed configure the next |
| * frame if it is available else hold on current |
| * frame */ |
| /* Get next from the buffer queue */ |
| process_progressive_mode(common); |
| } |
| } |
| |
| /* |
| * vpif_channel_isr: It changes status of the displayed buffer, takes next |
| * buffer from the queue and sets its address in VPIF registers |
| */ |
| static irqreturn_t vpif_channel_isr(int irq, void *dev_id) |
| { |
| struct vpif_device *dev = &vpif_obj; |
| struct channel_obj *ch; |
| struct common_obj *common; |
| enum v4l2_field field; |
| int fid = -1, i; |
| int channel_id = 0; |
| |
| channel_id = *(int *)(dev_id); |
| if (!vpif_intr_status(channel_id + 2)) |
| return IRQ_NONE; |
| |
| ch = dev->dev[channel_id]; |
| field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; |
| for (i = 0; i < VPIF_NUMOBJECTS; i++) { |
| common = &ch->common[i]; |
| /* If streaming is started in this channel */ |
| |
| if (1 == ch->vpifparams.std_info.frm_fmt) { |
| spin_lock(&common->irqlock); |
| if (list_empty(&common->dma_queue)) { |
| spin_unlock(&common->irqlock); |
| continue; |
| } |
| spin_unlock(&common->irqlock); |
| |
| /* Progressive mode */ |
| if (!channel_first_int[i][channel_id]) { |
| /* Mark status of the cur_frm to |
| * done and unlock semaphore on it */ |
| v4l2_get_timestamp(&common->cur_frm->vb. |
| v4l2_buf.timestamp); |
| vb2_buffer_done(&common->cur_frm->vb, |
| VB2_BUF_STATE_DONE); |
| /* Make cur_frm pointing to next_frm */ |
| common->cur_frm = common->next_frm; |
| } |
| |
| channel_first_int[i][channel_id] = 0; |
| process_progressive_mode(common); |
| } else { |
| /* Interlaced mode */ |
| /* If it is first interrupt, ignore it */ |
| |
| if (channel_first_int[i][channel_id]) { |
| channel_first_int[i][channel_id] = 0; |
| continue; |
| } |
| |
| if (0 == i) { |
| ch->field_id ^= 1; |
| /* Get field id from VPIF registers */ |
| fid = vpif_channel_getfid(ch->channel_id + 2); |
| /* If fid does not match with stored field id */ |
| if (fid != ch->field_id) { |
| /* Make them in sync */ |
| if (0 == fid) |
| ch->field_id = fid; |
| |
| return IRQ_HANDLED; |
| } |
| } |
| process_interlaced_mode(fid, common); |
| } |
| } |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int vpif_update_std_info(struct channel_obj *ch) |
| { |
| struct video_obj *vid_ch = &ch->video; |
| struct vpif_params *vpifparams = &ch->vpifparams; |
| struct vpif_channel_config_params *std_info = &vpifparams->std_info; |
| const struct vpif_channel_config_params *config; |
| |
| int i; |
| |
| for (i = 0; i < vpif_ch_params_count; i++) { |
| config = &vpif_ch_params[i]; |
| if (config->hd_sd == 0) { |
| vpif_dbg(2, debug, "SD format\n"); |
| if (config->stdid & vid_ch->stdid) { |
| memcpy(std_info, config, sizeof(*config)); |
| break; |
| } |
| } |
| } |
| |
| if (i == vpif_ch_params_count) { |
| vpif_dbg(1, debug, "Format not found\n"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int vpif_update_resolution(struct channel_obj *ch) |
| { |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct video_obj *vid_ch = &ch->video; |
| struct vpif_params *vpifparams = &ch->vpifparams; |
| struct vpif_channel_config_params *std_info = &vpifparams->std_info; |
| |
| if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height) |
| return -EINVAL; |
| |
| if (vid_ch->stdid) { |
| if (vpif_update_std_info(ch)) |
| return -EINVAL; |
| } |
| |
| common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; |
| common->fmt.fmt.pix.width = std_info->width; |
| common->fmt.fmt.pix.height = std_info->height; |
| vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n", |
| common->fmt.fmt.pix.width, common->fmt.fmt.pix.height); |
| |
| /* Set height and width paramateres */ |
| common->height = std_info->height; |
| common->width = std_info->width; |
| common->fmt.fmt.pix.sizeimage = common->height * common->width * 2; |
| |
| if (vid_ch->stdid) |
| common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
| else |
| common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709; |
| |
| if (ch->vpifparams.std_info.frm_fmt) |
| common->fmt.fmt.pix.field = V4L2_FIELD_NONE; |
| else |
| common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED; |
| |
| return 0; |
| } |
| |
| /* |
| * vpif_calculate_offsets: This function calculates buffers offset for Y and C |
| * in the top and bottom field |
| */ |
| static void vpif_calculate_offsets(struct channel_obj *ch) |
| { |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct vpif_params *vpifparams = &ch->vpifparams; |
| enum v4l2_field field = common->fmt.fmt.pix.field; |
| struct video_obj *vid_ch = &ch->video; |
| unsigned int hpitch, vpitch, sizeimage; |
| |
| if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) { |
| if (ch->vpifparams.std_info.frm_fmt) |
| vid_ch->buf_field = V4L2_FIELD_NONE; |
| else |
| vid_ch->buf_field = V4L2_FIELD_INTERLACED; |
| } else { |
| vid_ch->buf_field = common->fmt.fmt.pix.field; |
| } |
| |
| sizeimage = common->fmt.fmt.pix.sizeimage; |
| |
| hpitch = common->fmt.fmt.pix.bytesperline; |
| vpitch = sizeimage / (hpitch * 2); |
| if ((V4L2_FIELD_NONE == vid_ch->buf_field) || |
| (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { |
| common->ytop_off = 0; |
| common->ybtm_off = hpitch; |
| common->ctop_off = sizeimage / 2; |
| common->cbtm_off = sizeimage / 2 + hpitch; |
| } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) { |
| common->ytop_off = 0; |
| common->ybtm_off = sizeimage / 4; |
| common->ctop_off = sizeimage / 2; |
| common->cbtm_off = common->ctop_off + sizeimage / 4; |
| } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) { |
| common->ybtm_off = 0; |
| common->ytop_off = sizeimage / 4; |
| common->cbtm_off = sizeimage / 2; |
| common->ctop_off = common->cbtm_off + sizeimage / 4; |
| } |
| |
| if ((V4L2_FIELD_NONE == vid_ch->buf_field) || |
| (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) { |
| vpifparams->video_params.storage_mode = 1; |
| } else { |
| vpifparams->video_params.storage_mode = 0; |
| } |
| |
| if (ch->vpifparams.std_info.frm_fmt == 1) { |
| vpifparams->video_params.hpitch = |
| common->fmt.fmt.pix.bytesperline; |
| } else { |
| if ((field == V4L2_FIELD_ANY) || |
| (field == V4L2_FIELD_INTERLACED)) |
| vpifparams->video_params.hpitch = |
| common->fmt.fmt.pix.bytesperline * 2; |
| else |
| vpifparams->video_params.hpitch = |
| common->fmt.fmt.pix.bytesperline; |
| } |
| |
| ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid; |
| } |
| |
| static void vpif_config_addr(struct channel_obj *ch, int muxmode) |
| { |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| if (VPIF_CHANNEL3_VIDEO == ch->channel_id) { |
| common->set_addr = ch3_set_videobuf_addr; |
| } else { |
| if (2 == muxmode) |
| common->set_addr = ch2_set_videobuf_addr_yc_nmux; |
| else |
| common->set_addr = ch2_set_videobuf_addr; |
| } |
| } |
| |
| /* functions implementing ioctls */ |
| /** |
| * vpif_querycap() - QUERYCAP handler |
| * @file: file ptr |
| * @priv: file handle |
| * @cap: ptr to v4l2_capability structure |
| */ |
| static int vpif_querycap(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| |
| cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; |
| cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
| strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver)); |
| snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", |
| dev_name(vpif_dev)); |
| strlcpy(cap->card, config->card_name, sizeof(cap->card)); |
| |
| return 0; |
| } |
| |
| static int vpif_enum_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_fmtdesc *fmt) |
| { |
| if (fmt->index != 0) |
| return -EINVAL; |
| |
| /* Fill in the information about format */ |
| fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); |
| fmt->pixelformat = V4L2_PIX_FMT_YUV422P; |
| fmt->flags = 0; |
| return 0; |
| } |
| |
| static int vpif_g_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_format *fmt) |
| { |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| /* Check the validity of the buffer type */ |
| if (common->fmt.type != fmt->type) |
| return -EINVAL; |
| |
| if (vpif_update_resolution(ch)) |
| return -EINVAL; |
| *fmt = common->fmt; |
| return 0; |
| } |
| |
| static int vpif_try_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_format *fmt) |
| { |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; |
| |
| /* |
| * to supress v4l-compliance warnings silently correct |
| * the pixelformat |
| */ |
| if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) |
| pixfmt->pixelformat = common->fmt.fmt.pix.pixelformat; |
| |
| if (vpif_update_resolution(ch)) |
| return -EINVAL; |
| |
| pixfmt->colorspace = common->fmt.fmt.pix.colorspace; |
| pixfmt->field = common->fmt.fmt.pix.field; |
| pixfmt->bytesperline = common->fmt.fmt.pix.width; |
| pixfmt->width = common->fmt.fmt.pix.width; |
| pixfmt->height = common->fmt.fmt.pix.height; |
| pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2; |
| pixfmt->priv = 0; |
| |
| return 0; |
| } |
| |
| static int vpif_s_fmt_vid_out(struct file *file, void *priv, |
| struct v4l2_format *fmt) |
| { |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; |
| int ret; |
| |
| if (vb2_is_busy(&common->buffer_queue)) |
| return -EBUSY; |
| |
| ret = vpif_try_fmt_vid_out(file, priv, fmt); |
| if (ret) |
| return ret; |
| |
| /* store the pix format in the channel object */ |
| common->fmt.fmt.pix = *pixfmt; |
| |
| /* store the format in the channel object */ |
| common->fmt = *fmt; |
| return 0; |
| } |
| |
| static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct vpif_display_chan_config *chan_cfg; |
| struct v4l2_output output; |
| int ret; |
| |
| if (config->chan_config[ch->channel_id].outputs == NULL) |
| return -ENODATA; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| output = chan_cfg->outputs[ch->output_idx].output; |
| if (output.capabilities != V4L2_OUT_CAP_STD) |
| return -ENODATA; |
| |
| if (vb2_is_busy(&common->buffer_queue)) |
| return -EBUSY; |
| |
| |
| if (!(std_id & VPIF_V4L2_STD)) |
| return -EINVAL; |
| |
| /* Call encoder subdevice function to set the standard */ |
| ch->video.stdid = std_id; |
| memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings)); |
| /* Get the information about the standard */ |
| if (vpif_update_resolution(ch)) |
| return -EINVAL; |
| |
| common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width; |
| |
| ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, |
| s_std_output, std_id); |
| if (ret < 0) { |
| vpif_err("Failed to set output standard\n"); |
| return ret; |
| } |
| |
| ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video, |
| s_std, std_id); |
| if (ret < 0) |
| vpif_err("Failed to set standard for sub devices\n"); |
| return ret; |
| } |
| |
| static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_display_chan_config *chan_cfg; |
| struct v4l2_output output; |
| |
| if (config->chan_config[ch->channel_id].outputs == NULL) |
| return -ENODATA; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| output = chan_cfg->outputs[ch->output_idx].output; |
| if (output.capabilities != V4L2_OUT_CAP_STD) |
| return -ENODATA; |
| |
| *std = ch->video.stdid; |
| return 0; |
| } |
| |
| static int vpif_enum_output(struct file *file, void *fh, |
| struct v4l2_output *output) |
| { |
| |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_display_chan_config *chan_cfg; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| if (output->index >= chan_cfg->output_count) { |
| vpif_dbg(1, debug, "Invalid output index\n"); |
| return -EINVAL; |
| } |
| |
| *output = chan_cfg->outputs[output->index].output; |
| return 0; |
| } |
| |
| /** |
| * vpif_output_to_subdev() - Maps output to sub device |
| * @vpif_cfg - global config ptr |
| * @chan_cfg - channel config ptr |
| * @index - Given output index from application |
| * |
| * lookup the sub device information for a given output index. |
| * we report all the output to application. output table also |
| * has sub device name for the each output |
| */ |
| static int |
| vpif_output_to_subdev(struct vpif_display_config *vpif_cfg, |
| struct vpif_display_chan_config *chan_cfg, int index) |
| { |
| struct vpif_subdev_info *subdev_info; |
| const char *subdev_name; |
| int i; |
| |
| vpif_dbg(2, debug, "vpif_output_to_subdev\n"); |
| |
| if (chan_cfg->outputs == NULL) |
| return -1; |
| |
| subdev_name = chan_cfg->outputs[index].subdev_name; |
| if (subdev_name == NULL) |
| return -1; |
| |
| /* loop through the sub device list to get the sub device info */ |
| for (i = 0; i < vpif_cfg->subdev_count; i++) { |
| subdev_info = &vpif_cfg->subdevinfo[i]; |
| if (!strcmp(subdev_info->name, subdev_name)) |
| return i; |
| } |
| return -1; |
| } |
| |
| /** |
| * vpif_set_output() - Select an output |
| * @vpif_cfg - global config ptr |
| * @ch - channel |
| * @index - Given output index from application |
| * |
| * Select the given output. |
| */ |
| static int vpif_set_output(struct vpif_display_config *vpif_cfg, |
| struct channel_obj *ch, int index) |
| { |
| struct vpif_display_chan_config *chan_cfg = |
| &vpif_cfg->chan_config[ch->channel_id]; |
| struct vpif_subdev_info *subdev_info = NULL; |
| struct v4l2_subdev *sd = NULL; |
| u32 input = 0, output = 0; |
| int sd_index; |
| int ret; |
| |
| sd_index = vpif_output_to_subdev(vpif_cfg, chan_cfg, index); |
| if (sd_index >= 0) { |
| sd = vpif_obj.sd[sd_index]; |
| subdev_info = &vpif_cfg->subdevinfo[sd_index]; |
| } |
| |
| if (sd) { |
| input = chan_cfg->outputs[index].input_route; |
| output = chan_cfg->outputs[index].output_route; |
| ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0); |
| if (ret < 0 && ret != -ENOIOCTLCMD) { |
| vpif_err("Failed to set output\n"); |
| return ret; |
| } |
| |
| } |
| ch->output_idx = index; |
| ch->sd = sd; |
| if (chan_cfg->outputs != NULL) |
| /* update tvnorms from the sub device output info */ |
| ch->video_dev->tvnorms = chan_cfg->outputs[index].output.std; |
| return 0; |
| } |
| |
| static int vpif_s_output(struct file *file, void *priv, unsigned int i) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_display_chan_config *chan_cfg; |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| if (vb2_is_busy(&common->buffer_queue)) |
| return -EBUSY; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| |
| if (i >= chan_cfg->output_count) |
| return -EINVAL; |
| |
| return vpif_set_output(config, ch, i); |
| } |
| |
| static int vpif_g_output(struct file *file, void *priv, unsigned int *i) |
| { |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| |
| *i = ch->output_idx; |
| |
| return 0; |
| } |
| |
| /** |
| * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler |
| * @file: file ptr |
| * @priv: file handle |
| * @timings: input timings |
| */ |
| static int |
| vpif_enum_dv_timings(struct file *file, void *priv, |
| struct v4l2_enum_dv_timings *timings) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_display_chan_config *chan_cfg; |
| struct v4l2_output output; |
| int ret; |
| |
| if (config->chan_config[ch->channel_id].outputs == NULL) |
| return -ENODATA; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| output = chan_cfg->outputs[ch->output_idx].output; |
| if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS) |
| return -ENODATA; |
| |
| timings->pad = 0; |
| |
| ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings); |
| if (ret == -ENOIOCTLCMD || ret == -ENODEV) |
| return -EINVAL; |
| return ret; |
| } |
| |
| /** |
| * vpif_s_dv_timings() - S_DV_TIMINGS handler |
| * @file: file ptr |
| * @priv: file handle |
| * @timings: digital video timings |
| */ |
| static int vpif_s_dv_timings(struct file *file, void *priv, |
| struct v4l2_dv_timings *timings) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_params *vpifparams = &ch->vpifparams; |
| struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; |
| struct vpif_channel_config_params *std_info = &vpifparams->std_info; |
| struct video_obj *vid_ch = &ch->video; |
| struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt; |
| struct vpif_display_chan_config *chan_cfg; |
| struct v4l2_output output; |
| int ret; |
| |
| if (config->chan_config[ch->channel_id].outputs == NULL) |
| return -ENODATA; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| output = chan_cfg->outputs[ch->output_idx].output; |
| if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS) |
| return -ENODATA; |
| |
| if (vb2_is_busy(&common->buffer_queue)) |
| return -EBUSY; |
| |
| if (timings->type != V4L2_DV_BT_656_1120) { |
| vpif_dbg(2, debug, "Timing type not defined\n"); |
| return -EINVAL; |
| } |
| |
| /* Configure subdevice timings, if any */ |
| ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings); |
| if (ret == -ENOIOCTLCMD || ret == -ENODEV) |
| ret = 0; |
| if (ret < 0) { |
| vpif_dbg(2, debug, "Error setting custom DV timings\n"); |
| return ret; |
| } |
| |
| if (!(timings->bt.width && timings->bt.height && |
| (timings->bt.hbackporch || |
| timings->bt.hfrontporch || |
| timings->bt.hsync) && |
| timings->bt.vfrontporch && |
| (timings->bt.vbackporch || |
| timings->bt.vsync))) { |
| vpif_dbg(2, debug, "Timings for width, height, " |
| "horizontal back porch, horizontal sync, " |
| "horizontal front porch, vertical back porch, " |
| "vertical sync and vertical back porch " |
| "must be defined\n"); |
| return -EINVAL; |
| } |
| |
| vid_ch->dv_timings = *timings; |
| |
| /* Configure video port timings */ |
| |
| std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8; |
| std_info->sav2eav = bt->width; |
| |
| std_info->l1 = 1; |
| std_info->l3 = bt->vsync + bt->vbackporch + 1; |
| |
| std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt); |
| if (bt->interlaced) { |
| if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { |
| std_info->l5 = std_info->vsize/2 - |
| (bt->vfrontporch - 1); |
| std_info->l7 = std_info->vsize/2 + 1; |
| std_info->l9 = std_info->l7 + bt->il_vsync + |
| bt->il_vbackporch + 1; |
| std_info->l11 = std_info->vsize - |
| (bt->il_vfrontporch - 1); |
| } else { |
| vpif_dbg(2, debug, "Required timing values for " |
| "interlaced BT format missing\n"); |
| return -EINVAL; |
| } |
| } else { |
| std_info->l5 = std_info->vsize - (bt->vfrontporch - 1); |
| } |
| strncpy(std_info->name, "Custom timings BT656/1120", |
| VPIF_MAX_NAME); |
| std_info->width = bt->width; |
| std_info->height = bt->height; |
| std_info->frm_fmt = bt->interlaced ? 0 : 1; |
| std_info->ycmux_mode = 0; |
| std_info->capture_format = 0; |
| std_info->vbi_supported = 0; |
| std_info->hd_sd = 1; |
| std_info->stdid = 0; |
| vid_ch->stdid = 0; |
| |
| return 0; |
| } |
| |
| /** |
| * vpif_g_dv_timings() - G_DV_TIMINGS handler |
| * @file: file ptr |
| * @priv: file handle |
| * @timings: digital video timings |
| */ |
| static int vpif_g_dv_timings(struct file *file, void *priv, |
| struct v4l2_dv_timings *timings) |
| { |
| struct vpif_display_config *config = vpif_dev->platform_data; |
| struct video_device *vdev = video_devdata(file); |
| struct channel_obj *ch = video_get_drvdata(vdev); |
| struct vpif_display_chan_config *chan_cfg; |
| struct video_obj *vid_ch = &ch->video; |
| struct v4l2_output output; |
| |
| if (config->chan_config[ch->channel_id].outputs == NULL) |
| goto error; |
| |
| chan_cfg = &config->chan_config[ch->channel_id]; |
| output = chan_cfg->outputs[ch->output_idx].output; |
| |
| if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS) |
| goto error; |
| |
| *timings = vid_ch->dv_timings; |
| |
| return 0; |
| error: |
| return -ENODATA; |
| } |
| |
| /* |
| * vpif_log_status() - Status information |
| * @file: file ptr |
| * @priv: file handle |
| * |
| * Returns zero. |
| */ |
| static int vpif_log_status(struct file *filep, void *priv) |
| { |
| /* status for sub devices */ |
| v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status); |
| |
| return 0; |
| } |
| |
| /* vpif display ioctl operations */ |
| static const struct v4l2_ioctl_ops vpif_ioctl_ops = { |
| .vidioc_querycap = vpif_querycap, |
| .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out, |
| .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out, |
| .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out, |
| .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out, |
| |
| .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, |
| .vidioc_streamon = vb2_ioctl_streamon, |
| .vidioc_streamoff = vb2_ioctl_streamoff, |
| |
| .vidioc_s_std = vpif_s_std, |
| .vidioc_g_std = vpif_g_std, |
| |
| .vidioc_enum_output = vpif_enum_output, |
| .vidioc_s_output = vpif_s_output, |
| .vidioc_g_output = vpif_g_output, |
| |
| .vidioc_enum_dv_timings = vpif_enum_dv_timings, |
| .vidioc_s_dv_timings = vpif_s_dv_timings, |
| .vidioc_g_dv_timings = vpif_g_dv_timings, |
| |
| .vidioc_log_status = vpif_log_status, |
| }; |
| |
| static const struct v4l2_file_operations vpif_fops = { |
| .owner = THIS_MODULE, |
| .open = v4l2_fh_open, |
| .release = vb2_fop_release, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = vb2_fop_mmap, |
| .poll = vb2_fop_poll |
| }; |
| |
| /*Configure the channels, buffer sizei, request irq */ |
| static int initialize_vpif(void) |
| { |
| int free_channel_objects_index; |
| int err, i, j; |
| |
| /* Allocate memory for six channel objects */ |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| vpif_obj.dev[i] = |
| kzalloc(sizeof(struct channel_obj), GFP_KERNEL); |
| /* If memory allocation fails, return error */ |
| if (!vpif_obj.dev[i]) { |
| free_channel_objects_index = i; |
| err = -ENOMEM; |
| goto vpif_init_free_channel_objects; |
| } |
| } |
| |
| return 0; |
| |
| vpif_init_free_channel_objects: |
| for (j = 0; j < free_channel_objects_index; j++) |
| kfree(vpif_obj.dev[j]); |
| return err; |
| } |
| |
| static int vpif_async_bound(struct v4l2_async_notifier *notifier, |
| struct v4l2_subdev *subdev, |
| struct v4l2_async_subdev *asd) |
| { |
| int i; |
| |
| for (i = 0; i < vpif_obj.config->subdev_count; i++) |
| if (!strcmp(vpif_obj.config->subdevinfo[i].name, |
| subdev->name)) { |
| vpif_obj.sd[i] = subdev; |
| vpif_obj.sd[i]->grp_id = 1 << i; |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static int vpif_probe_complete(void) |
| { |
| struct common_obj *common; |
| struct video_device *vdev; |
| struct channel_obj *ch; |
| struct vb2_queue *q; |
| int j, err, k; |
| |
| for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) { |
| ch = vpif_obj.dev[j]; |
| /* Initialize field of the channel objects */ |
| for (k = 0; k < VPIF_NUMOBJECTS; k++) { |
| common = &ch->common[k]; |
| spin_lock_init(&common->irqlock); |
| mutex_init(&common->lock); |
| common->set_addr = NULL; |
| common->ytop_off = 0; |
| common->ybtm_off = 0; |
| common->ctop_off = 0; |
| common->cbtm_off = 0; |
| common->cur_frm = NULL; |
| common->next_frm = NULL; |
| memset(&common->fmt, 0, sizeof(common->fmt)); |
| } |
| ch->initialized = 0; |
| if (vpif_obj.config->subdev_count) |
| ch->sd = vpif_obj.sd[0]; |
| ch->channel_id = j; |
| |
| memset(&ch->vpifparams, 0, sizeof(ch->vpifparams)); |
| |
| ch->common[VPIF_VIDEO_INDEX].fmt.type = |
| V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| |
| /* select output 0 */ |
| err = vpif_set_output(vpif_obj.config, ch, 0); |
| if (err) |
| goto probe_out; |
| |
| /* set initial format */ |
| ch->video.stdid = V4L2_STD_525_60; |
| memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings)); |
| vpif_update_resolution(ch); |
| |
| /* Initialize vb2 queue */ |
| q = &common->buffer_queue; |
| q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; |
| q->drv_priv = ch; |
| q->ops = &video_qops; |
| q->mem_ops = &vb2_dma_contig_memops; |
| q->buf_struct_size = sizeof(struct vpif_disp_buffer); |
| q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| q->min_buffers_needed = 1; |
| q->lock = &common->lock; |
| err = vb2_queue_init(q); |
| if (err) { |
| vpif_err("vpif_display: vb2_queue_init() failed\n"); |
| goto probe_out; |
| } |
| |
| common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev); |
| if (IS_ERR(common->alloc_ctx)) { |
| vpif_err("Failed to get the context\n"); |
| err = PTR_ERR(common->alloc_ctx); |
| goto probe_out; |
| } |
| |
| INIT_LIST_HEAD(&common->dma_queue); |
| |
| /* register video device */ |
| vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n", |
| (int)ch, (int)&ch->video_dev); |
| |
| /* Initialize the video_device structure */ |
| vdev = ch->video_dev; |
| strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name)); |
| vdev->release = video_device_release; |
| vdev->fops = &vpif_fops; |
| vdev->ioctl_ops = &vpif_ioctl_ops; |
| vdev->v4l2_dev = &vpif_obj.v4l2_dev; |
| vdev->vfl_dir = VFL_DIR_TX; |
| vdev->queue = q; |
| vdev->lock = &common->lock; |
| set_bit(V4L2_FL_USE_FH_PRIO, &vdev->flags); |
| video_set_drvdata(ch->video_dev, ch); |
| err = video_register_device(vdev, VFL_TYPE_GRABBER, |
| (j ? 3 : 2)); |
| if (err < 0) |
| goto probe_out; |
| } |
| |
| return 0; |
| |
| probe_out: |
| for (k = 0; k < j; k++) { |
| ch = vpif_obj.dev[k]; |
| common = &ch->common[k]; |
| vb2_dma_contig_cleanup_ctx(common->alloc_ctx); |
| video_unregister_device(ch->video_dev); |
| video_device_release(ch->video_dev); |
| ch->video_dev = NULL; |
| } |
| return err; |
| } |
| |
| static int vpif_async_complete(struct v4l2_async_notifier *notifier) |
| { |
| return vpif_probe_complete(); |
| } |
| |
| /* |
| * vpif_probe: This function creates device entries by register itself to the |
| * V4L2 driver and initializes fields of each channel objects |
| */ |
| static __init int vpif_probe(struct platform_device *pdev) |
| { |
| struct vpif_subdev_info *subdevdata; |
| int i, j = 0, err = 0; |
| int res_idx = 0; |
| struct i2c_adapter *i2c_adap; |
| struct channel_obj *ch; |
| struct video_device *vfd; |
| struct resource *res; |
| int subdev_count; |
| |
| vpif_dev = &pdev->dev; |
| err = initialize_vpif(); |
| |
| if (err) { |
| v4l2_err(vpif_dev->driver, "Error initializing vpif\n"); |
| return err; |
| } |
| |
| err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev); |
| if (err) { |
| v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n"); |
| return err; |
| } |
| |
| while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) { |
| err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr, |
| IRQF_SHARED, VPIF_DRIVER_NAME, |
| (void *)(&vpif_obj.dev[res_idx]-> |
| channel_id)); |
| if (err) { |
| err = -EINVAL; |
| vpif_err("VPIF IRQ request failed\n"); |
| goto vpif_unregister; |
| } |
| res_idx++; |
| } |
| |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| /* Get the pointer to the channel object */ |
| ch = vpif_obj.dev[i]; |
| |
| /* Allocate memory for video device */ |
| vfd = video_device_alloc(); |
| if (vfd == NULL) { |
| for (j = 0; j < i; j++) { |
| ch = vpif_obj.dev[j]; |
| video_device_release(ch->video_dev); |
| } |
| err = -ENOMEM; |
| goto vpif_unregister; |
| } |
| |
| /* Set video_dev to the video device */ |
| ch->video_dev = vfd; |
| } |
| |
| vpif_obj.config = pdev->dev.platform_data; |
| subdev_count = vpif_obj.config->subdev_count; |
| subdevdata = vpif_obj.config->subdevinfo; |
| vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count, |
| GFP_KERNEL); |
| if (vpif_obj.sd == NULL) { |
| vpif_err("unable to allocate memory for subdevice pointers\n"); |
| err = -ENOMEM; |
| goto vpif_sd_error; |
| } |
| |
| if (!vpif_obj.config->asd_sizes) { |
| i2c_adap = i2c_get_adapter(1); |
| for (i = 0; i < subdev_count; i++) { |
| vpif_obj.sd[i] = |
| v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, |
| i2c_adap, |
| &subdevdata[i]. |
| board_info, |
| NULL); |
| if (!vpif_obj.sd[i]) { |
| vpif_err("Error registering v4l2 subdevice\n"); |
| err = -ENODEV; |
| goto probe_subdev_out; |
| } |
| |
| if (vpif_obj.sd[i]) |
| vpif_obj.sd[i]->grp_id = 1 << i; |
| } |
| vpif_probe_complete(); |
| } else { |
| vpif_obj.notifier.subdevs = vpif_obj.config->asd; |
| vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0]; |
| vpif_obj.notifier.bound = vpif_async_bound; |
| vpif_obj.notifier.complete = vpif_async_complete; |
| err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev, |
| &vpif_obj.notifier); |
| if (err) { |
| vpif_err("Error registering async notifier\n"); |
| err = -EINVAL; |
| goto probe_subdev_out; |
| } |
| } |
| |
| return 0; |
| |
| probe_subdev_out: |
| kfree(vpif_obj.sd); |
| vpif_sd_error: |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| ch = vpif_obj.dev[i]; |
| /* Note: does nothing if ch->video_dev == NULL */ |
| video_device_release(ch->video_dev); |
| } |
| vpif_unregister: |
| v4l2_device_unregister(&vpif_obj.v4l2_dev); |
| |
| return err; |
| } |
| |
| /* |
| * vpif_remove: It un-register channels from V4L2 driver |
| */ |
| static int vpif_remove(struct platform_device *device) |
| { |
| struct common_obj *common; |
| struct channel_obj *ch; |
| int i; |
| |
| v4l2_device_unregister(&vpif_obj.v4l2_dev); |
| |
| kfree(vpif_obj.sd); |
| /* un-register device */ |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| /* Get the pointer to the channel object */ |
| ch = vpif_obj.dev[i]; |
| common = &ch->common[i]; |
| vb2_dma_contig_cleanup_ctx(common->alloc_ctx); |
| /* Unregister video device */ |
| video_unregister_device(ch->video_dev); |
| |
| ch->video_dev = NULL; |
| kfree(vpif_obj.dev[i]); |
| } |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int vpif_suspend(struct device *dev) |
| { |
| struct common_obj *common; |
| struct channel_obj *ch; |
| int i; |
| |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| /* Get the pointer to the channel object */ |
| ch = vpif_obj.dev[i]; |
| common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| if (!vb2_is_streaming(&common->buffer_queue)) |
| continue; |
| |
| mutex_lock(&common->lock); |
| /* Disable channel */ |
| if (ch->channel_id == VPIF_CHANNEL2_VIDEO) { |
| enable_channel2(0); |
| channel2_intr_enable(0); |
| } |
| if (ch->channel_id == VPIF_CHANNEL3_VIDEO || |
| ycmux_mode == 2) { |
| enable_channel3(0); |
| channel3_intr_enable(0); |
| } |
| mutex_unlock(&common->lock); |
| } |
| |
| return 0; |
| } |
| |
| static int vpif_resume(struct device *dev) |
| { |
| |
| struct common_obj *common; |
| struct channel_obj *ch; |
| int i; |
| |
| for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) { |
| /* Get the pointer to the channel object */ |
| ch = vpif_obj.dev[i]; |
| common = &ch->common[VPIF_VIDEO_INDEX]; |
| |
| if (!vb2_is_streaming(&common->buffer_queue)) |
| continue; |
| |
| mutex_lock(&common->lock); |
| /* Enable channel */ |
| if (ch->channel_id == VPIF_CHANNEL2_VIDEO) { |
| enable_channel2(1); |
| channel2_intr_enable(1); |
| } |
| if (ch->channel_id == VPIF_CHANNEL3_VIDEO || |
| ycmux_mode == 2) { |
| enable_channel3(1); |
| channel3_intr_enable(1); |
| } |
| mutex_unlock(&common->lock); |
| } |
| |
| return 0; |
| } |
| |
| #endif |
| |
| static SIMPLE_DEV_PM_OPS(vpif_pm_ops, vpif_suspend, vpif_resume); |
| |
| static __refdata struct platform_driver vpif_driver = { |
| .driver = { |
| .name = VPIF_DRIVER_NAME, |
| .owner = THIS_MODULE, |
| .pm = &vpif_pm_ops, |
| }, |
| .probe = vpif_probe, |
| .remove = vpif_remove, |
| }; |
| |
| module_platform_driver(vpif_driver); |