/* * Copyright (C) 2009 Texas Instruments Inc * * 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; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * TODO : add support for VBI & HBI data service * add static buffer allocation */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vpif_capture.h" #include "vpif.h" MODULE_DESCRIPTION("TI DaVinci VPIF Capture driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(VPIF_CAPTURE_VERSION); #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; static u32 ch0_numbuffers = 3; static u32 ch1_numbuffers = 3; static u32 ch0_bufsize = 1920 * 1080 * 2; static u32 ch1_bufsize = 720 * 576 * 2; module_param(debug, int, 0644); module_param(ch0_numbuffers, uint, S_IRUGO); module_param(ch1_numbuffers, uint, S_IRUGO); module_param(ch0_bufsize, uint, S_IRUGO); module_param(ch1_bufsize, uint, S_IRUGO); MODULE_PARM_DESC(debug, "Debug level 0-1"); MODULE_PARM_DESC(ch2_numbuffers, "Channel0 buffer count (default:3)"); MODULE_PARM_DESC(ch3_numbuffers, "Channel1 buffer count (default:3)"); MODULE_PARM_DESC(ch2_bufsize, "Channel0 buffer size (default:1920 x 1080 x 2)"); MODULE_PARM_DESC(ch3_bufsize, "Channel1 buffer size (default:720 x 576 x 2)"); static struct vpif_config_params config_params = { .min_numbuffers = 3, .numbuffers[0] = 3, .numbuffers[1] = 3, .min_bufsize[0] = 720 * 480 * 2, .min_bufsize[1] = 720 * 480 * 2, .channel_bufsize[0] = 1920 * 1080 * 2, .channel_bufsize[1] = 720 * 576 * 2, }; /* global variables */ 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); /** * 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) { /* Get the file handle object and channel object */ struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct vb2_queue *q = vb->vb2_queue; struct channel_obj *ch = fh->channel; struct common_obj *common; unsigned long addr; vpif_dbg(2, debug, "vpif_buffer_prepare\n"); common = &ch->common[VPIF_VIDEO_INDEX]; if (vb->state != VB2_BUF_STATE_ACTIVE && vb->state != VB2_BUF_STATE_PREPARED) { vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage); if (vb2_plane_vaddr(vb, 0) && vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) goto exit; addr = vb2_dma_contig_plane_dma_addr(vb, 0); if (q->streaming) { if (!IS_ALIGNED((addr + common->ytop_off), 8) || !IS_ALIGNED((addr + common->ybtm_off), 8) || !IS_ALIGNED((addr + common->ctop_off), 8) || !IS_ALIGNED((addr + common->cbtm_off), 8)) goto exit; } } return 0; exit: vpif_dbg(1, debug, "buffer_prepare:offset is not aligned to 8 bytes\n"); return -EINVAL; } /** * 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[]) { /* Get the file handle object and channel object */ struct vpif_fh *fh = vb2_get_drv_priv(vq); struct channel_obj *ch = fh->channel; struct common_obj *common; unsigned long size; common = &ch->common[VPIF_VIDEO_INDEX]; vpif_dbg(2, debug, "vpif_buffer_setup\n"); /* If memory type is not mmap, return */ if (V4L2_MEMORY_MMAP == common->memory) { /* Calculate the size of the buffer */ size = config_params.channel_bufsize[ch->channel_id]; /* * Checking if the buffer size exceeds the available buffer * ycmux_mode = 0 means 1 channel mode HD and * ycmux_mode = 1 means 2 channels mode SD */ if (ch->vpifparams.std_info.ycmux_mode == 0) { if (config_params.video_limit[ch->channel_id]) while (size * *nbuffers > (config_params.video_limit[0] + config_params.video_limit[1])) (*nbuffers)--; } else { if (config_params.video_limit[ch->channel_id]) while (size * *nbuffers > config_params.video_limit[ch->channel_id]) (*nbuffers)--; } } else { size = common->fmt.fmt.pix.sizeimage; } if (*nbuffers < config_params.min_numbuffers) *nbuffers = config_params.min_numbuffers; *nplanes = 1; sizes[0] = size; alloc_ctxs[0] = common->alloc_ctx; return 0; } /** * vpif_buffer_queue : Callback function to add buffer to DMA queue * @vb: ptr to vb2_buffer */ static void vpif_buffer_queue(struct vb2_buffer *vb) { /* Get the file handle object and channel object */ struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct channel_obj *ch = fh->channel; struct vpif_cap_buffer *buf = container_of(vb, struct vpif_cap_buffer, vb); struct common_obj *common; unsigned long flags; common = &ch->common[VPIF_VIDEO_INDEX]; vpif_dbg(2, debug, "vpif_buffer_queue\n"); spin_lock_irqsave(&common->irqlock, flags); /* add the buffer to the DMA queue */ list_add_tail(&buf->list, &common->dma_queue); spin_unlock_irqrestore(&common->irqlock, flags); } /** * vpif_buf_cleanup : Callback function to free buffer * @vb: ptr to vb2_buffer * * This function is called from the videobuf2 layer to free memory * allocated to the buffers */ static void vpif_buf_cleanup(struct vb2_buffer *vb) { /* Get the file handle object and channel object */ struct vpif_fh *fh = vb2_get_drv_priv(vb->vb2_queue); struct vpif_cap_buffer *buf = container_of(vb, struct vpif_cap_buffer, vb); struct channel_obj *ch = fh->channel; struct common_obj *common; unsigned long flags; common = &ch->common[VPIF_VIDEO_INDEX]; spin_lock_irqsave(&common->irqlock, flags); if (vb->state == VB2_BUF_STATE_ACTIVE) list_del_init(&buf->list); spin_unlock_irqrestore(&common->irqlock, flags); } static void vpif_wait_prepare(struct vb2_queue *vq) { struct vpif_fh *fh = vb2_get_drv_priv(vq); struct channel_obj *ch = fh->channel; struct common_obj *common; common = &ch->common[VPIF_VIDEO_INDEX]; mutex_unlock(&common->lock); } static void vpif_wait_finish(struct vb2_queue *vq) { struct vpif_fh *fh = vb2_get_drv_priv(vq); struct channel_obj *ch = fh->channel; struct common_obj *common; common = &ch->common[VPIF_VIDEO_INDEX]; mutex_lock(&common->lock); } static int vpif_buffer_init(struct vb2_buffer *vb) { struct vpif_cap_buffer *buf = container_of(vb, struct vpif_cap_buffer, vb); INIT_LIST_HEAD(&buf->list); return 0; } static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} }; static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count) { struct vpif_capture_config *vpif_config_data = vpif_dev->platform_data; struct vpif_fh *fh = vb2_get_drv_priv(vq); struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct vpif_params *vpif = &ch->vpifparams; unsigned long addr = 0; unsigned long flags; int ret; /* If buffer queue is empty, return error */ spin_lock_irqsave(&common->irqlock, flags); if (list_empty(&common->dma_queue)) { spin_unlock_irqrestore(&common->irqlock, flags); vpif_dbg(1, debug, "buffer queue is empty\n"); return -EIO; } /* Get the next frame from the buffer queue */ common->cur_frm = common->next_frm = list_entry(common->dma_queue.next, struct vpif_cap_buffer, list); /* Remove buffer from the buffer queue */ 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; /* Initialize field_id and started member */ ch->field_id = 0; common->started = 1; addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0); /* Calculate the offset for Y and C data in the buffer */ vpif_calculate_offsets(ch); if ((vpif->std_info.frm_fmt && ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE) && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY))) || (!vpif->std_info.frm_fmt && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) { vpif_dbg(1, debug, "conflict in field format and std format\n"); return -EINVAL; } /* configure 1 or 2 channel mode */ if (vpif_config_data->setup_input_channel_mode) { ret = vpif_config_data-> setup_input_channel_mode(vpif->std_info.ycmux_mode); if (ret < 0) { vpif_dbg(1, debug, "can't set vpif channel mode\n"); return ret; } } /* Call vpif_set_params function to set the parameters and addresses */ ret = vpif_set_video_params(vpif, ch->channel_id); if (ret < 0) { vpif_dbg(1, debug, "can't set video params\n"); return ret; } common->started = ret; vpif_config_addr(ch, ret); 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_CHANNEL0_VIDEO == ch->channel_id)) { channel0_intr_assert(); channel0_intr_enable(1); enable_channel0(1); } if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || (common->started == 2)) { channel1_intr_assert(); channel1_intr_enable(1); enable_channel1(1); } return 0; } /* abort streaming and wait for last buffer */ static int vpif_stop_streaming(struct vb2_queue *vq) { struct vpif_fh *fh = vb2_get_drv_priv(vq); struct channel_obj *ch = fh->channel; struct common_obj *common; unsigned long flags; if (!vb2_is_streaming(vq)) return 0; common = &ch->common[VPIF_VIDEO_INDEX]; /* release all active buffers */ spin_lock_irqsave(&common->irqlock, flags); while (!list_empty(&common->dma_queue)) { common->next_frm = list_entry(common->dma_queue.next, struct vpif_cap_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); return 0; } static struct vb2_ops video_qops = { .queue_setup = vpif_buffer_queue_setup, .wait_prepare = vpif_wait_prepare, .wait_finish = vpif_wait_finish, .buf_init = vpif_buffer_init, .buf_prepare = vpif_buffer_prepare, .start_streaming = vpif_start_streaming, .stop_streaming = vpif_stop_streaming, .buf_cleanup = vpif_buf_cleanup, .buf_queue = vpif_buffer_queue, }; /** * vpif_process_buffer_complete: process a completed buffer * @common: ptr to common channel object * * This function time stamp the buffer and mark it as DONE. It also * wake up any process waiting on the QUEUE and set the next buffer * as current */ static void vpif_process_buffer_complete(struct common_obj *common) { v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp); vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_DONE); /* Make curFrm pointing to nextFrm */ common->cur_frm = common->next_frm; } /** * vpif_schedule_next_buffer: set next buffer address for capture * @common : ptr to common channel object * * This function will get next buffer from the dma queue and * set the buffer address in the vpif register for capture. * the buffer is marked active */ static void vpif_schedule_next_buffer(struct common_obj *common) { unsigned long addr = 0; spin_lock(&common->irqlock); common->next_frm = list_entry(common->dma_queue.next, struct vpif_cap_buffer, list); /* Remove that buffer from the buffer queue */ list_del(&common->next_frm->list); spin_unlock(&common->irqlock); common->next_frm->vb.state = VB2_BUF_STATE_ACTIVE; addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0); /* Set top and bottom field addresses in VPIF registers */ common->set_addr(addr + common->ytop_off, addr + common->ybtm_off, addr + common->ctop_off, addr + common->cbtm_off); } /** * vpif_channel_isr : ISR handler for vpif capture * @irq: irq number * @dev_id: dev_id ptr * * It changes status of the captured 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 common_obj *common; struct channel_obj *ch; enum v4l2_field field; int channel_id = 0; int fid = -1, i; channel_id = *(int *)(dev_id); if (!vpif_intr_status(channel_id)) return IRQ_NONE; ch = dev->dev[channel_id]; field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field; for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) { common = &ch->common[i]; /* skip If streaming is not started in this channel */ if (0 == common->started) continue; /* Check the field format */ if (1 == ch->vpifparams.std_info.frm_fmt) { /* Progressive mode */ spin_lock(&common->irqlock); if (list_empty(&common->dma_queue)) { spin_unlock(&common->irqlock); continue; } spin_unlock(&common->irqlock); if (!channel_first_int[i][channel_id]) vpif_process_buffer_complete(common); channel_first_int[i][channel_id] = 0; vpif_schedule_next_buffer(common); channel_first_int[i][channel_id] = 0; } 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); if (fid != ch->field_id) { /** * If field id does not match stored * field id, make them in sync */ if (0 == fid) ch->field_id = fid; return IRQ_HANDLED; } } /* device field id and local field id are in sync */ if (0 == fid) { /* this is even field */ if (common->cur_frm == common->next_frm) continue; /* mark the current buffer as done */ vpif_process_buffer_complete(common); } 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); continue; } spin_unlock(&common->irqlock); vpif_schedule_next_buffer(common); } } } return IRQ_HANDLED; } /** * vpif_update_std_info() - update standard related info * @ch: ptr to channel object * * For a given standard selected by application, update values * in the device data structures */ static int vpif_update_std_info(struct channel_obj *ch) { struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct vpif_params *vpifparams = &ch->vpifparams; const struct vpif_channel_config_params *config; struct vpif_channel_config_params *std_info = &vpifparams->std_info; struct video_obj *vid_ch = &ch->video; int index; vpif_dbg(2, debug, "vpif_update_std_info\n"); for (index = 0; index < vpif_ch_params_count; index++) { config = &vpif_ch_params[index]; 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; } } else { vpif_dbg(2, debug, "HD format\n"); if (!memcmp(&config->dv_timings, &vid_ch->dv_timings, sizeof(vid_ch->dv_timings))) { memcpy(std_info, config, sizeof(*config)); break; } } } /* standard not found */ if (index == vpif_ch_params_count) return -EINVAL; common->fmt.fmt.pix.width = std_info->width; common->width = std_info->width; common->fmt.fmt.pix.height = std_info->height; common->height = std_info->height; common->fmt.fmt.pix.bytesperline = std_info->width; vpifparams->video_params.hpitch = std_info->width; vpifparams->video_params.storage_mode = std_info->frm_fmt; return 0; } /** * vpif_calculate_offsets : This function calculates buffers offsets * @ch : ptr to channel object * * This function calculates buffer offsets for Y and C in the top and * bottom field */ static void vpif_calculate_offsets(struct channel_obj *ch) { unsigned int hpitch, vpitch, sizeimage; struct video_obj *vid_ch = &(ch->video); struct vpif_params *vpifparams = &ch->vpifparams; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; enum v4l2_field field = common->fmt.fmt.pix.field; vpif_dbg(2, debug, "vpif_calculate_offsets\n"); if (V4L2_FIELD_ANY == field) { if (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)) { /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 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) { /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 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) { /* Calculate offsets for Y top, Y Bottom, C top and C Bottom */ 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 (1 == vpifparams->std_info.frm_fmt) 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 = vpifparams->std_info.stdid; } /** * vpif_config_format: configure default frame format in the device * ch : ptr to channel object */ static void vpif_config_format(struct channel_obj *ch) { struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; vpif_dbg(2, debug, "vpif_config_format\n"); common->fmt.fmt.pix.field = V4L2_FIELD_ANY; if (config_params.numbuffers[ch->channel_id] == 0) common->memory = V4L2_MEMORY_USERPTR; else common->memory = V4L2_MEMORY_MMAP; common->fmt.fmt.pix.sizeimage = config_params.channel_bufsize[ch->channel_id]; if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_SBGGR8; else common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P; common->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; } /** * vpif_get_default_field() - Get default field type based on interface * @vpif_params - ptr to vpif params */ static inline enum v4l2_field vpif_get_default_field( struct vpif_interface *iface) { return (iface->if_type == VPIF_IF_RAW_BAYER) ? V4L2_FIELD_NONE : V4L2_FIELD_INTERLACED; } /** * vpif_check_format() - check given pixel format for compatibility * @ch - channel ptr * @pixfmt - Given pixel format * @update - update the values as per hardware requirement * * Check the application pixel format for S_FMT and update the input * values as per hardware limits for TRY_FMT. The default pixel and * field format is selected based on interface type. */ static int vpif_check_format(struct channel_obj *ch, struct v4l2_pix_format *pixfmt, int update) { struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); struct vpif_params *vpif_params = &ch->vpifparams; enum v4l2_field field = pixfmt->field; u32 sizeimage, hpitch, vpitch; int ret = -EINVAL; vpif_dbg(2, debug, "vpif_check_format\n"); /** * first check for the pixel format. If if_type is Raw bayer, * only V4L2_PIX_FMT_SBGGR8 format is supported. Otherwise only * V4L2_PIX_FMT_YUV422P is supported */ if (vpif_params->iface.if_type == VPIF_IF_RAW_BAYER) { if (pixfmt->pixelformat != V4L2_PIX_FMT_SBGGR8) { if (!update) { vpif_dbg(2, debug, "invalid pix format\n"); goto exit; } pixfmt->pixelformat = V4L2_PIX_FMT_SBGGR8; } } else { if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P) { if (!update) { vpif_dbg(2, debug, "invalid pixel format\n"); goto exit; } pixfmt->pixelformat = V4L2_PIX_FMT_YUV422P; } } if (!(VPIF_VALID_FIELD(field))) { if (!update) { vpif_dbg(2, debug, "invalid field format\n"); goto exit; } /** * By default use FIELD_NONE for RAW Bayer capture * and FIELD_INTERLACED for other interfaces */ field = vpif_get_default_field(&vpif_params->iface); } else if (field == V4L2_FIELD_ANY) /* unsupported field. Use default */ field = vpif_get_default_field(&vpif_params->iface); /* validate the hpitch */ hpitch = pixfmt->bytesperline; if (hpitch < vpif_params->std_info.width) { if (!update) { vpif_dbg(2, debug, "invalid hpitch\n"); goto exit; } hpitch = vpif_params->std_info.width; } sizeimage = pixfmt->sizeimage; vpitch = sizeimage / (hpitch * 2); /* validate the vpitch */ if (vpitch < vpif_params->std_info.height) { if (!update) { vpif_dbg(2, debug, "Invalid vpitch\n"); goto exit; } vpitch = vpif_params->std_info.height; } /* Check for 8 byte alignment */ if (!ALIGN(hpitch, 8)) { if (!update) { vpif_dbg(2, debug, "invalid pitch alignment\n"); goto exit; } /* adjust to next 8 byte boundary */ hpitch = (((hpitch + 7) / 8) * 8); } /* if update is set, modify the bytesperline and sizeimage */ if (update) { pixfmt->bytesperline = hpitch; pixfmt->sizeimage = hpitch * vpitch * 2; } /** * Image width and height is always based on current standard width and * height */ pixfmt->width = common->fmt.fmt.pix.width; pixfmt->height = common->fmt.fmt.pix.height; return 0; exit: return ret; } /** * vpif_config_addr() - function to configure buffer address in vpif * @ch - channel ptr * @muxmode - channel mux mode */ static void vpif_config_addr(struct channel_obj *ch, int muxmode) { struct common_obj *common; vpif_dbg(2, debug, "vpif_config_addr\n"); common = &(ch->common[VPIF_VIDEO_INDEX]); if (VPIF_CHANNEL1_VIDEO == ch->channel_id) common->set_addr = ch1_set_videobuf_addr; else if (2 == muxmode) common->set_addr = ch0_set_videobuf_addr_yc_nmux; else common->set_addr = ch0_set_videobuf_addr; } /** * vpif_mmap : It is used to map kernel space buffers into user spaces * @filep: file pointer * @vma: ptr to vm_area_struct */ static int vpif_mmap(struct file *filep, struct vm_area_struct *vma) { /* Get the channel object and file handle object */ struct vpif_fh *fh = filep->private_data; struct channel_obj *ch = fh->channel; struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]); int ret; vpif_dbg(2, debug, "vpif_mmap\n"); if (mutex_lock_interruptible(&common->lock)) return -ERESTARTSYS; ret = vb2_mmap(&common->buffer_queue, vma); mutex_unlock(&common->lock); return ret; } /** * vpif_poll: It is used for select/poll system call * @filep: file pointer * @wait: poll table to wait */ static unsigned int vpif_poll(struct file *filep, poll_table * wait) { struct vpif_fh *fh = filep->private_data; struct channel_obj *channel = fh->channel; struct common_obj *common = &(channel->common[VPIF_VIDEO_INDEX]); unsigned int res = 0; vpif_dbg(2, debug, "vpif_poll\n"); if (common->started) { mutex_lock(&common->lock); res = vb2_poll(&common->buffer_queue, filep, wait); mutex_unlock(&common->lock); } return res; } /** * vpif_open : vpif open handler * @filep: file ptr * * It creates object of file handle structure and stores it in private_data * member of filepointer */ static int vpif_open(struct file *filep) { struct video_device *vdev = video_devdata(filep); struct common_obj *common; struct video_obj *vid_ch; struct channel_obj *ch; struct vpif_fh *fh; vpif_dbg(2, debug, "vpif_open\n"); ch = video_get_drvdata(vdev); vid_ch = &ch->video; common = &ch->common[VPIF_VIDEO_INDEX]; /* Allocate memory for the file handle object */ fh = kzalloc(sizeof(struct vpif_fh), GFP_KERNEL); if (NULL == fh) { vpif_err("unable to allocate memory for file handle object\n"); return -ENOMEM; } if (mutex_lock_interruptible(&common->lock)) { kfree(fh); return -ERESTARTSYS; } /* store pointer to fh in private_data member of filep */ filep->private_data = fh; fh->channel = ch; fh->initialized = 0; /* If decoder is not initialized. initialize it */ if (!ch->initialized) { fh->initialized = 1; ch->initialized = 1; memset(&(ch->vpifparams), 0, sizeof(struct vpif_params)); } /* Increment channel usrs counter */ ch->usrs++; /* Set io_allowed member to false */ fh->io_allowed[VPIF_VIDEO_INDEX] = 0; /* Initialize priority of this instance to default priority */ fh->prio = V4L2_PRIORITY_UNSET; v4l2_prio_open(&ch->prio, &fh->prio); mutex_unlock(&common->lock); return 0; } /** * vpif_release : function to clean up file close * @filep: file pointer * * This function deletes buffer queue, frees the buffers and the vpif file * handle */ static int vpif_release(struct file *filep) { struct vpif_fh *fh = filep->private_data; struct channel_obj *ch = fh->channel; struct common_obj *common; vpif_dbg(2, debug, "vpif_release\n"); common = &ch->common[VPIF_VIDEO_INDEX]; mutex_lock(&common->lock); /* if this instance is doing IO */ if (fh->io_allowed[VPIF_VIDEO_INDEX]) { /* Reset io_usrs member of channel object */ common->io_usrs = 0; /* Disable channel as per its device type and channel id */ if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { enable_channel0(0); channel0_intr_enable(0); } if ((VPIF_CHANNEL1_VIDEO == ch->channel_id) || (2 == common->started)) { enable_channel1(0); channel1_intr_enable(0); } common->started = 0; /* Free buffers allocated */ vb2_queue_release(&common->buffer_queue); vb2_dma_contig_cleanup_ctx(common->alloc_ctx); } /* Decrement channel usrs counter */ ch->usrs--; /* Close the priority */ v4l2_prio_close(&ch->prio, fh->prio); if (fh->initialized) ch->initialized = 0; mutex_unlock(&common->lock); filep->private_data = NULL; kfree(fh); return 0; } /** * vpif_reqbufs() - request buffer handler * @file: file ptr * @priv: file handle * @reqbuf: request buffer structure ptr */ static int vpif_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbuf) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common; u8 index = 0; struct vb2_queue *q; int ret; vpif_dbg(2, debug, "vpif_reqbufs\n"); /** * This file handle has not initialized the channel, * It is not allowed to do settings */ if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { if (!fh->initialized) { vpif_dbg(1, debug, "Channel Busy\n"); return -EBUSY; } } if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type || !vpif_dev) return -EINVAL; index = VPIF_VIDEO_INDEX; common = &ch->common[index]; if (0 != common->io_usrs) return -EBUSY; /* Initialize videobuf2 queue as per the buffer type */ common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev); if (IS_ERR(common->alloc_ctx)) { vpif_err("Failed to get the context\n"); return PTR_ERR(common->alloc_ctx); } q = &common->buffer_queue; q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; q->io_modes = VB2_MMAP | VB2_USERPTR; q->drv_priv = fh; q->ops = &video_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct vpif_cap_buffer); q->timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; ret = vb2_queue_init(q); if (ret) { vpif_err("vpif_capture: vb2_queue_init() failed\n"); vb2_dma_contig_cleanup_ctx(common->alloc_ctx); return ret; } /* Set io allowed member of file handle to TRUE */ fh->io_allowed[index] = 1; /* Increment io usrs member of channel object to 1 */ common->io_usrs = 1; /* Store type of memory requested in channel object */ common->memory = reqbuf->memory; INIT_LIST_HEAD(&common->dma_queue); /* Allocate buffers */ return vb2_reqbufs(&common->buffer_queue, reqbuf); } /** * vpif_querybuf() - query buffer handler * @file: file ptr * @priv: file handle * @buf: v4l2 buffer structure ptr */ static int vpif_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; vpif_dbg(2, debug, "vpif_querybuf\n"); if (common->fmt.type != buf->type) return -EINVAL; if (common->memory != V4L2_MEMORY_MMAP) { vpif_dbg(1, debug, "Invalid memory\n"); return -EINVAL; } return vb2_querybuf(&common->buffer_queue, buf); } /** * vpif_qbuf() - query buffer handler * @file: file ptr * @priv: file handle * @buf: v4l2 buffer structure ptr */ static int vpif_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct v4l2_buffer tbuf = *buf; vpif_dbg(2, debug, "vpif_qbuf\n"); if (common->fmt.type != tbuf.type) { vpif_err("invalid buffer type\n"); return -EINVAL; } if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { vpif_err("fh io not allowed\n"); return -EACCES; } return vb2_qbuf(&common->buffer_queue, buf); } /** * vpif_dqbuf() - query buffer handler * @file: file ptr * @priv: file handle * @buf: v4l2 buffer structure ptr */ static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; vpif_dbg(2, debug, "vpif_dqbuf\n"); return vb2_dqbuf(&common->buffer_queue, buf, (file->f_flags & O_NONBLOCK)); } /** * vpif_streamon() - streamon handler * @file: file ptr * @priv: file handle * @buftype: v4l2 buffer type */ static int vpif_streamon(struct file *file, void *priv, enum v4l2_buf_type buftype) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct channel_obj *oth_ch = vpif_obj.dev[!ch->channel_id]; struct vpif_params *vpif; int ret = 0; vpif_dbg(2, debug, "vpif_streamon\n"); vpif = &ch->vpifparams; if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { vpif_dbg(1, debug, "buffer type not supported\n"); return -EINVAL; } /* If file handle is not allowed IO, return error */ if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { vpif_dbg(1, debug, "io not allowed\n"); return -EACCES; } /* If Streaming is already started, return error */ if (common->started) { vpif_dbg(1, debug, "channel->started\n"); return -EBUSY; } if ((ch->channel_id == VPIF_CHANNEL0_VIDEO && oth_ch->common[VPIF_VIDEO_INDEX].started && vpif->std_info.ycmux_mode == 0) || ((ch->channel_id == VPIF_CHANNEL1_VIDEO) && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) { vpif_dbg(1, debug, "other channel is being used\n"); return -EBUSY; } ret = vpif_check_format(ch, &common->fmt.fmt.pix, 0); if (ret) return ret; /* Enable streamon on the sub device */ ret = v4l2_subdev_call(ch->sd, video, s_stream, 1); if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { vpif_dbg(1, debug, "stream on failed in subdev\n"); return ret; } /* Call vb2_streamon to start streaming in videobuf2 */ ret = vb2_streamon(&common->buffer_queue, buftype); if (ret) { vpif_dbg(1, debug, "vb2_streamon\n"); return ret; } return ret; } /** * vpif_streamoff() - streamoff handler * @file: file ptr * @priv: file handle * @buftype: v4l2 buffer type */ static int vpif_streamoff(struct file *file, void *priv, enum v4l2_buf_type buftype) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; int ret; vpif_dbg(2, debug, "vpif_streamoff\n"); if (buftype != V4L2_BUF_TYPE_VIDEO_CAPTURE) { vpif_dbg(1, debug, "buffer type not supported\n"); return -EINVAL; } /* If io is allowed for this file handle, return error */ if (!fh->io_allowed[VPIF_VIDEO_INDEX]) { vpif_dbg(1, debug, "io not allowed\n"); return -EACCES; } /* If streaming is not started, return error */ if (!common->started) { vpif_dbg(1, debug, "channel->started\n"); return -EINVAL; } /* disable channel */ if (VPIF_CHANNEL0_VIDEO == ch->channel_id) { enable_channel0(0); channel0_intr_enable(0); } else { enable_channel1(0); channel1_intr_enable(0); } common->started = 0; ret = v4l2_subdev_call(ch->sd, video, s_stream, 0); if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) vpif_dbg(1, debug, "stream off failed in subdev\n"); return vb2_streamoff(&common->buffer_queue, buftype); } /** * vpif_input_to_subdev() - Maps input to sub device * @vpif_cfg - global config ptr * @chan_cfg - channel config ptr * @input_index - Given input index from application * * lookup the sub device information for a given input index. * we report all the inputs to application. inputs table also * has sub device name for the each input */ static int vpif_input_to_subdev( struct vpif_capture_config *vpif_cfg, struct vpif_capture_chan_config *chan_cfg, int input_index) { struct vpif_subdev_info *subdev_info; const char *subdev_name; int i; vpif_dbg(2, debug, "vpif_input_to_subdev\n"); subdev_name = chan_cfg->inputs[input_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->subdev_info[i]; if (!strcmp(subdev_info->name, subdev_name)) return i; } return -1; } /** * vpif_set_input() - Select an input * @vpif_cfg - global config ptr * @ch - channel * @_index - Given input index from application * * Select the given input. */ static int vpif_set_input( struct vpif_capture_config *vpif_cfg, struct channel_obj *ch, int index) { struct vpif_capture_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_input_to_subdev(vpif_cfg, chan_cfg, index); if (sd_index >= 0) { sd = vpif_obj.sd[sd_index]; subdev_info = &vpif_cfg->subdev_info[sd_index]; } /* first setup input path from sub device to vpif */ if (sd && vpif_cfg->setup_input_path) { ret = vpif_cfg->setup_input_path(ch->channel_id, subdev_info->name); if (ret < 0) { vpif_dbg(1, debug, "couldn't setup input path for the" \ " sub device %s, for input index %d\n", subdev_info->name, index); return ret; } } if (sd) { input = chan_cfg->inputs[index].input_route; output = chan_cfg->inputs[index].output_route; ret = v4l2_subdev_call(sd, video, s_routing, input, output, 0); if (ret < 0 && ret != -ENOIOCTLCMD) { vpif_dbg(1, debug, "Failed to set input\n"); return ret; } } ch->input_idx = index; ch->sd = sd; /* copy interface parameters to vpif */ ch->vpifparams.iface = chan_cfg->vpif_if; /* update tvnorms from the sub device input info */ ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std; return 0; } /** * vpif_querystd() - querystd handler * @file: file ptr * @priv: file handle * @std_id: ptr to std id * * This function is called to detect standard at the selected input */ static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; int ret = 0; vpif_dbg(2, debug, "vpif_querystd\n"); /* Call querystd function of decoder device */ ret = v4l2_subdev_call(ch->sd, video, querystd, std_id); if (ret == -ENOIOCTLCMD || ret == -ENODEV) return -ENODATA; if (ret) { vpif_dbg(1, debug, "Failed to query standard for sub devices\n"); return ret; } return 0; } /** * vpif_g_std() - get STD handler * @file: file ptr * @priv: file handle * @std_id: ptr to std id */ static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; vpif_dbg(2, debug, "vpif_g_std\n"); *std = ch->video.stdid; return 0; } /** * vpif_s_std() - set STD handler * @file: file ptr * @priv: file handle * @std_id: ptr to std id */ static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; int ret = 0; vpif_dbg(2, debug, "vpif_s_std\n"); if (common->started) { vpif_err("streaming in progress\n"); return -EBUSY; } if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { if (!fh->initialized) { vpif_dbg(1, debug, "Channel Busy\n"); return -EBUSY; } } ret = v4l2_prio_check(&ch->prio, fh->prio); if (0 != ret) return ret; fh->initialized = 1; /* 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_std_info(ch)) { vpif_err("Error getting the standard info\n"); return -EINVAL; } /* Configure the default format information */ vpif_config_format(ch); /* set standard in the sub device */ ret = v4l2_subdev_call(ch->sd, core, s_std, std_id); if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) { vpif_dbg(1, debug, "Failed to set standard for sub devices\n"); return ret; } return 0; } /** * vpif_enum_input() - ENUMINPUT handler * @file: file ptr * @priv: file handle * @input: ptr to input structure */ static int vpif_enum_input(struct file *file, void *priv, struct v4l2_input *input) { struct vpif_capture_config *config = vpif_dev->platform_data; struct vpif_capture_chan_config *chan_cfg; struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; chan_cfg = &config->chan_config[ch->channel_id]; if (input->index >= chan_cfg->input_count) { vpif_dbg(1, debug, "Invalid input index\n"); return -EINVAL; } memcpy(input, &chan_cfg->inputs[input->index].input, sizeof(*input)); return 0; } /** * vpif_g_input() - Get INPUT handler * @file: file ptr * @priv: file handle * @index: ptr to input index */ static int vpif_g_input(struct file *file, void *priv, unsigned int *index) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; *index = ch->input_idx; return 0; } /** * vpif_s_input() - Set INPUT handler * @file: file ptr * @priv: file handle * @index: input index */ static int vpif_s_input(struct file *file, void *priv, unsigned int index) { struct vpif_capture_config *config = vpif_dev->platform_data; struct vpif_capture_chan_config *chan_cfg; struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; int ret; chan_cfg = &config->chan_config[ch->channel_id]; if (index >= chan_cfg->input_count) return -EINVAL; if (common->started) { vpif_err("Streaming in progress\n"); return -EBUSY; } if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { if (!fh->initialized) { vpif_dbg(1, debug, "Channel Busy\n"); return -EBUSY; } } ret = v4l2_prio_check(&ch->prio, fh->prio); if (0 != ret) return ret; fh->initialized = 1; return vpif_set_input(config, ch, index); } /** * vpif_enum_fmt_vid_cap() - ENUM_FMT handler * @file: file ptr * @priv: file handle * @index: input index */ static int vpif_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *fmt) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; if (fmt->index != 0) { vpif_dbg(1, debug, "Invalid format index\n"); return -EINVAL; } /* Fill in the information about format */ if (ch->vpifparams.iface.if_type == VPIF_IF_RAW_BAYER) { fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; strcpy(fmt->description, "Raw Mode -Bayer Pattern GrRBGb"); fmt->pixelformat = V4L2_PIX_FMT_SBGGR8; } else { fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; strcpy(fmt->description, "YCbCr4:2:2 YC Planar"); fmt->pixelformat = V4L2_PIX_FMT_YUV422P; } return 0; } /** * vpif_try_fmt_vid_cap() - TRY_FMT handler * @file: file ptr * @priv: file handle * @fmt: ptr to v4l2 format structure */ static int vpif_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct v4l2_pix_format *pixfmt = &fmt->fmt.pix; return vpif_check_format(ch, pixfmt, 1); } /** * vpif_g_fmt_vid_cap() - Set INPUT handler * @file: file ptr * @priv: file handle * @fmt: ptr to v4l2 format structure */ static int vpif_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; /* Check the validity of the buffer type */ if (common->fmt.type != fmt->type) return -EINVAL; /* Fill in the information about format */ *fmt = common->fmt; return 0; } /** * vpif_s_fmt_vid_cap() - Set FMT handler * @file: file ptr * @priv: file handle * @fmt: ptr to v4l2 format structure */ static int vpif_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *fmt) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; struct v4l2_pix_format *pixfmt; int ret = 0; vpif_dbg(2, debug, "%s\n", __func__); /* If streaming is started, return error */ if (common->started) { vpif_dbg(1, debug, "Streaming is started\n"); return -EBUSY; } if ((VPIF_CHANNEL0_VIDEO == ch->channel_id) || (VPIF_CHANNEL1_VIDEO == ch->channel_id)) { if (!fh->initialized) { vpif_dbg(1, debug, "Channel Busy\n"); return -EBUSY; } } ret = v4l2_prio_check(&ch->prio, fh->prio); if (0 != ret) return ret; fh->initialized = 1; pixfmt = &fmt->fmt.pix; /* Check for valid field format */ ret = vpif_check_format(ch, pixfmt, 0); if (ret) return ret; /* store the format in the channel object */ common->fmt = *fmt; return 0; } /** * 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_capture_config *config = vpif_dev->platform_data; cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; snprintf(cap->driver, sizeof(cap->driver), "%s", dev_name(vpif_dev)); 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; } /** * vpif_g_priority() - get priority handler * @file: file ptr * @priv: file handle * @prio: ptr to v4l2_priority structure */ static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *prio) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; *prio = v4l2_prio_max(&ch->prio); return 0; } /** * vpif_s_priority() - set priority handler * @file: file ptr * @priv: file handle * @prio: ptr to v4l2_priority structure */ static int vpif_s_priority(struct file *file, void *priv, enum v4l2_priority p) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; return v4l2_prio_change(&ch->prio, &fh->prio, p); } /** * vpif_cropcap() - cropcap handler * @file: file ptr * @priv: file handle * @crop: ptr to v4l2_cropcap structure */ static int vpif_cropcap(struct file *file, void *priv, struct v4l2_cropcap *crop) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; if (V4L2_BUF_TYPE_VIDEO_CAPTURE != crop->type) return -EINVAL; crop->bounds.left = 0; crop->bounds.top = 0; crop->bounds.height = common->height; crop->bounds.width = common->width; crop->defrect = crop->bounds; 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_fh *fh = priv; struct channel_obj *ch = fh->channel; int ret; ret = v4l2_subdev_call(ch->sd, video, enum_dv_timings, timings); if (ret == -ENOIOCTLCMD || ret == -ENODEV) return -EINVAL; return ret; } /** * vpif_query_dv_timings() - QUERY_DV_TIMINGS handler * @file: file ptr * @priv: file handle * @timings: input timings */ static int vpif_query_dv_timings(struct file *file, void *priv, struct v4l2_dv_timings *timings) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; int ret; ret = v4l2_subdev_call(ch->sd, video, query_dv_timings, timings); if (ret == -ENOIOCTLCMD || ret == -ENODEV) return -ENODATA; 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_fh *fh = priv; struct channel_obj *ch = fh->channel; struct vpif_params *vpifparams = &ch->vpifparams; 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; int ret; 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 = bt->hbackporch + bt->hfrontporch + bt->hsync - 8; std_info->sav2eav = bt->width; std_info->l1 = 1; std_info->l3 = bt->vsync + bt->vbackporch + 1; if (bt->interlaced) { if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) { std_info->vsize = bt->height * 2 + bt->vfrontporch + bt->vsync + bt->vbackporch + bt->il_vfrontporch + bt->il_vsync + bt->il_vbackporch; 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->vsize = bt->height + bt->vfrontporch + bt->vsync + bt->vbackporch; 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_fh *fh = priv; struct channel_obj *ch = fh->channel; struct video_obj *vid_ch = &ch->video; *timings = vid_ch->dv_timings; return 0; } /* * vpif_g_chip_ident() - Identify the chip * @file: file ptr * @priv: file handle * @chip: chip identity * * Returns zero or -EINVAL if read operations fails. */ static int vpif_g_chip_ident(struct file *file, void *priv, struct v4l2_dbg_chip_ident *chip) { chip->ident = V4L2_IDENT_NONE; chip->revision = 0; if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) { vpif_dbg(2, debug, "match_type is invalid.\n"); return -EINVAL; } return v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 0, core, g_chip_ident, chip); } #ifdef CONFIG_VIDEO_ADV_DEBUG /* * vpif_dbg_g_register() - Read register * @file: file ptr * @priv: file handle * @reg: register to be read * * Debugging only * Returns zero or -EINVAL if read operations fails. */ static int vpif_dbg_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg){ struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; return v4l2_subdev_call(ch->sd, core, g_register, reg); } /* * vpif_dbg_s_register() - Write to register * @file: file ptr * @priv: file handle * @reg: register to be modified * * Debugging only * Returns zero or -EINVAL if write operations fails. */ static int vpif_dbg_s_register(struct file *file, void *priv, const struct v4l2_dbg_register *reg) { struct vpif_fh *fh = priv; struct channel_obj *ch = fh->channel; return v4l2_subdev_call(ch->sd, core, s_register, reg); } #endif /* * 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 capture ioctl operations */ static const struct v4l2_ioctl_ops vpif_ioctl_ops = { .vidioc_querycap = vpif_querycap, .vidioc_g_priority = vpif_g_priority, .vidioc_s_priority = vpif_s_priority, .vidioc_enum_fmt_vid_cap = vpif_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vpif_g_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vpif_s_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vpif_try_fmt_vid_cap, .vidioc_enum_input = vpif_enum_input, .vidioc_s_input = vpif_s_input, .vidioc_g_input = vpif_g_input, .vidioc_reqbufs = vpif_reqbufs, .vidioc_querybuf = vpif_querybuf, .vidioc_querystd = vpif_querystd, .vidioc_s_std = vpif_s_std, .vidioc_g_std = vpif_g_std, .vidioc_qbuf = vpif_qbuf, .vidioc_dqbuf = vpif_dqbuf, .vidioc_streamon = vpif_streamon, .vidioc_streamoff = vpif_streamoff, .vidioc_cropcap = vpif_cropcap, .vidioc_enum_dv_timings = vpif_enum_dv_timings, .vidioc_query_dv_timings = vpif_query_dv_timings, .vidioc_s_dv_timings = vpif_s_dv_timings, .vidioc_g_dv_timings = vpif_g_dv_timings, .vidioc_g_chip_ident = vpif_g_chip_ident, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = vpif_dbg_g_register, .vidioc_s_register = vpif_dbg_s_register, #endif .vidioc_log_status = vpif_log_status, }; /* vpif file operations */ static struct v4l2_file_operations vpif_fops = { .owner = THIS_MODULE, .open = vpif_open, .release = vpif_release, .unlocked_ioctl = video_ioctl2, .mmap = vpif_mmap, .poll = vpif_poll }; /* vpif video template */ static struct video_device vpif_video_template = { .name = "vpif", .fops = &vpif_fops, .minor = -1, .ioctl_ops = &vpif_ioctl_ops, }; /** * initialize_vpif() - Initialize vpif data structures * * Allocate memory for data structures and initialize them */ static int initialize_vpif(void) { int err = 0, i, j; int free_channel_objects_index; /* Default number of buffers should be 3 */ if ((ch0_numbuffers > 0) && (ch0_numbuffers < config_params.min_numbuffers)) ch0_numbuffers = config_params.min_numbuffers; if ((ch1_numbuffers > 0) && (ch1_numbuffers < config_params.min_numbuffers)) ch1_numbuffers = config_params.min_numbuffers; /* Set buffer size to min buffers size if it is invalid */ if (ch0_bufsize < config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]) ch0_bufsize = config_params.min_bufsize[VPIF_CHANNEL0_VIDEO]; if (ch1_bufsize < config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]) ch1_bufsize = config_params.min_bufsize[VPIF_CHANNEL1_VIDEO]; config_params.numbuffers[VPIF_CHANNEL0_VIDEO] = ch0_numbuffers; config_params.numbuffers[VPIF_CHANNEL1_VIDEO] = ch1_numbuffers; if (ch0_numbuffers) { config_params.channel_bufsize[VPIF_CHANNEL0_VIDEO] = ch0_bufsize; } if (ch1_numbuffers) { config_params.channel_bufsize[VPIF_CHANNEL1_VIDEO] = ch1_bufsize; } /* Allocate memory for six channel objects */ for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { vpif_obj.dev[i] = kzalloc(sizeof(*vpif_obj.dev[i]), 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; } /** * vpif_probe : This function probes the vpif capture driver * @pdev: platform device pointer * * This 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; struct vpif_capture_config *config; int i, j, k, err; int res_idx = 0; struct i2c_adapter *i2c_adap; struct channel_obj *ch; struct common_obj *common; struct video_device *vfd; struct resource *res; int subdev_count; size_t size; 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))) { for (i = res->start; i <= res->end; i++) { if (request_irq(i, vpif_channel_isr, IRQF_SHARED, "VPIF_Capture", (void *) (&vpif_obj.dev[res_idx]->channel_id))) { err = -EBUSY; for (j = 0; j < i; j++) free_irq(j, (void *) (&vpif_obj.dev[res_idx]->channel_id)); goto vpif_int_err; } } res_idx++; } for (i = 0; i < VPIF_CAPTURE_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 (NULL == vfd) { for (j = 0; j < i; j++) { ch = vpif_obj.dev[j]; video_device_release(ch->video_dev); } err = -ENOMEM; goto vpif_int_err; } /* Initialize field of video device */ *vfd = vpif_video_template; vfd->v4l2_dev = &vpif_obj.v4l2_dev; vfd->release = video_device_release; snprintf(vfd->name, sizeof(vfd->name), "VPIF_Capture_DRIVER_V%s", VPIF_CAPTURE_VERSION); /* Set video_dev to the video device */ ch->video_dev = vfd; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res) { size = resource_size(res); /* The resources are divided into two equal memory and when we * have HD output we can add them together */ for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { ch = vpif_obj.dev[j]; ch->channel_id = j; /* only enabled if second resource exists */ config_params.video_limit[ch->channel_id] = 0; if (size) config_params.video_limit[ch->channel_id] = size/2; } } i2c_adap = i2c_get_adapter(1); config = pdev->dev.platform_data; subdev_count = config->subdev_count; 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; } for (i = 0; i < subdev_count; i++) { subdevdata = &config->subdev_info[i]; vpif_obj.sd[i] = v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev, i2c_adap, &subdevdata->board_info, NULL); if (!vpif_obj.sd[i]) { vpif_err("Error registering v4l2 subdevice\n"); goto probe_subdev_out; } v4l2_info(&vpif_obj.v4l2_dev, "registered sub device %s\n", subdevdata->name); } for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { ch = vpif_obj.dev[j]; ch->channel_id = j; common = &(ch->common[VPIF_VIDEO_INDEX]); spin_lock_init(&common->irqlock); mutex_init(&common->lock); ch->video_dev->lock = &common->lock; /* Initialize prio member of channel object */ v4l2_prio_init(&ch->prio); video_set_drvdata(ch->video_dev, ch); /* select input 0 */ err = vpif_set_input(config, ch, 0); if (err) goto probe_out; err = video_register_device(ch->video_dev, VFL_TYPE_GRABBER, (j ? 1 : 0)); if (err) goto probe_out; } v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n"); return 0; probe_out: for (k = 0; k < j; k++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[k]; /* Unregister video device */ video_unregister_device(ch->video_dev); } probe_subdev_out: /* free sub devices memory */ kfree(vpif_obj.sd); vpif_sd_error: for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { ch = vpif_obj.dev[i]; /* Note: does nothing if ch->video_dev == NULL */ video_device_release(ch->video_dev); } vpif_int_err: v4l2_device_unregister(&vpif_obj.v4l2_dev); for (i = 0; i < res_idx; i++) { res = platform_get_resource(pdev, IORESOURCE_IRQ, i); for (j = res->start; j <= res->end; j++) free_irq(j, (void *)(&vpif_obj.dev[i]->channel_id)); } return err; } /** * vpif_remove() - driver remove handler * @device: ptr to platform device structure * * The vidoe device is unregistered */ static int vpif_remove(struct platform_device *device) { int i; struct channel_obj *ch; v4l2_device_unregister(&vpif_obj.v4l2_dev); /* un-register device */ for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[i]; /* Unregister video device */ video_unregister_device(ch->video_dev); } return 0; } #ifdef CONFIG_PM /** * vpif_suspend: vpif device suspend */ static int vpif_suspend(struct device *dev) { struct common_obj *common; struct channel_obj *ch; int i; for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[i]; common = &ch->common[VPIF_VIDEO_INDEX]; mutex_lock(&common->lock); if (ch->usrs && common->io_usrs) { /* Disable channel */ if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { enable_channel0(0); channel0_intr_enable(0); } if (ch->channel_id == VPIF_CHANNEL1_VIDEO || common->started == 2) { enable_channel1(0); channel1_intr_enable(0); } } mutex_unlock(&common->lock); } return 0; } /* * vpif_resume: vpif device suspend */ static int vpif_resume(struct device *dev) { struct common_obj *common; struct channel_obj *ch; int i; for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { /* Get the pointer to the channel object */ ch = vpif_obj.dev[i]; common = &ch->common[VPIF_VIDEO_INDEX]; mutex_lock(&common->lock); if (ch->usrs && common->io_usrs) { /* Disable channel */ if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { enable_channel0(1); channel0_intr_enable(1); } if (ch->channel_id == VPIF_CHANNEL1_VIDEO || common->started == 2) { enable_channel1(1); channel1_intr_enable(1); } } mutex_unlock(&common->lock); } return 0; } static const struct dev_pm_ops vpif_dev_pm_ops = { .suspend = vpif_suspend, .resume = vpif_resume, }; #define vpif_pm_ops (&vpif_dev_pm_ops) #else #define vpif_pm_ops NULL #endif static __refdata struct platform_driver vpif_driver = { .driver = { .name = "vpif_capture", .owner = THIS_MODULE, .pm = vpif_pm_ops, }, .probe = vpif_probe, .remove = vpif_remove, }; /** * vpif_init: initialize the vpif driver * * This function registers device and driver to the kernel, requests irq * handler and allocates memory * for channel objects */ static __init int vpif_init(void) { return platform_driver_register(&vpif_driver); } /** * vpif_cleanup : This function clean up the vpif capture resources * * This will un-registers device and driver to the kernel, frees * requested irq handler and de-allocates memory allocated for channel * objects. */ static void vpif_cleanup(void) { struct platform_device *pdev; struct resource *res; int irq_num; int i = 0; pdev = container_of(vpif_dev, struct platform_device, dev); while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, i))) { for (irq_num = res->start; irq_num <= res->end; irq_num++) free_irq(irq_num, (void *)(&vpif_obj.dev[i]->channel_id)); i++; } platform_driver_unregister(&vpif_driver); kfree(vpif_obj.sd); for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) kfree(vpif_obj.dev[i]); } /* Function for module initialization and cleanup */ module_init(vpif_init); module_exit(vpif_cleanup);