| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lad Prabhakar | 4049 | 56.75% | 32 | 39.02% |
| Chaithrika U S | 1544 | 21.64% | 2 | 2.44% |
| Mats Randgaard | 624 | 8.75% | 6 | 7.32% |
| Hans Verkuil | 328 | 4.60% | 14 | 17.07% |
| Manjunath Hadli | 275 | 3.85% | 4 | 4.88% |
| Steve Longerbeam | 78 | 1.09% | 1 | 1.22% |
| Anton Vasilyev | 56 | 0.78% | 1 | 1.22% |
| Junghak Sung | 51 | 0.71% | 2 | 2.44% |
| Kevin Hilman | 31 | 0.43% | 1 | 1.22% |
| Laurent Pinchart | 29 | 0.41% | 3 | 3.66% |
| Mauro Carvalho Chehab | 24 | 0.34% | 7 | 8.54% |
| SF Markus Elfring | 14 | 0.20% | 2 | 2.44% |
| Dan Carpenter | 10 | 0.14% | 1 | 1.22% |
| Murali Karicheri | 7 | 0.10% | 1 | 1.22% |
| Wei Yongjun | 6 | 0.08% | 2 | 2.44% |
| Bartosz Golaszewski | 5 | 0.07% | 1 | 1.22% |
| Tejun Heo | 3 | 0.04% | 1 | 1.22% |
| Gustavo A. R. Silva | 1 | 0.01% | 1 | 1.22% |
| Total | 7135 | 82 |
/* * 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" MODULE_ALIAS("platform:" VPIF_DRIVER_NAME); /* 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_v4l2_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 vb2_v4l2_buffer *vbuf = to_vb2_v4l2_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; vbuf->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 * @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_devs: 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, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct channel_obj *ch = vb2_get_drv_priv(vq); struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX]; unsigned size = common->fmt.fmt.pix.sizeimage; if (*nplanes) { if (sizes[0] < size) return -EINVAL; size = sizes[0]; } if (vq->num_buffers + *nbuffers < 3) *nbuffers = 3 - vq->num_buffers; *nplanes = 1; sizes[0] = size; /* 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 function queues the buffer to DMA engine */ static void vpif_buffer_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct vpif_disp_buffer *buf = to_vpif_buffer(vbuf); 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 * @vq: 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); addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb.vb2_buf, 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, 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, VB2_BUF_STATE_ERROR); } else { if (common->cur_frm) vb2_buffer_done(&common->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR); if (common->next_frm) vb2_buffer_done(&common->next_frm->vb.vb2_buf, 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, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&common->irqlock, flags); } static const 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; 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); /* Set top and bottom field addrs in VPIF registers */ addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb.vb2_buf, 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 */ common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); /* Change status of the cur_frm */ vb2_buffer_done(&common->cur_frm->vb.vb2_buf, 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; int fid = -1, i; int channel_id; channel_id = *(int *)(dev_id); if (!vpif_intr_status(channel_id + 2)) return IRQ_NONE; ch = dev->dev[channel_id]; 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 */ common->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns(); vb2_buffer_done(&common->cur_frm->vb.vb2_buf, 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, 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; 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; strscpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", dev_name(vpif_dev)); strscpy(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->pixelformat = V4L2_PIX_FMT_YUV422P; 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 suppress 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; 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) 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) 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) return -1; subdev_name = chan_cfg->outputs[index].subdev_name; if (!subdev_name) 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 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]; 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) /* 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) 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) 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); } strscpy(std_info->name, "Custom timings BT656/1120", sizeof(std_info->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) 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 void free_vpif_objs(void) { int i; for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) kfree(vpif_obj.dev[i]); } 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; q->dev = vpif_dev; err = vb2_queue_init(q); if (err) { vpif_err("vpif_display: vb2_queue_init() failed\n"); goto probe_out; } INIT_LIST_HEAD(&common->dma_queue); /* register video device */ vpif_dbg(1, debug, "channel=%p,channel->video_dev=%p\n", ch, &ch->video_dev); /* Initialize the video_device structure */ vdev = &ch->video_dev; strscpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name)); vdev->release = video_device_release_empty; 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; vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; video_set_drvdata(&ch->video_dev, ch); err = video_register_device(vdev, VFL_TYPE_VIDEO, (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]; video_unregister_device(&ch->video_dev); } return err; } static int vpif_async_complete(struct v4l2_async_notifier *notifier) { return vpif_probe_complete(); } static const struct v4l2_async_notifier_operations vpif_async_ops = { .bound = vpif_async_bound, .complete = vpif_async_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; struct i2c_adapter *i2c_adap; struct resource *res; int subdev_count; int res_idx = 0; int i, err; if (!pdev->dev.platform_data) { dev_warn(&pdev->dev, "Missing platform data. Giving up.\n"); return -EINVAL; } 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"); goto vpif_free; } 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++; } vpif_obj.config = pdev->dev.platform_data; subdev_count = vpif_obj.config->subdev_count; subdevdata = vpif_obj.config->subdevinfo; vpif_obj.sd = kcalloc(subdev_count, sizeof(*vpif_obj.sd), GFP_KERNEL); if (!vpif_obj.sd) { err = -ENOMEM; goto vpif_unregister; } v4l2_async_notifier_init(&vpif_obj.notifier); if (!vpif_obj.config->asd_sizes) { i2c_adap = i2c_get_adapter(vpif_obj.config->i2c_adapter_id); 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; } err = vpif_probe_complete(); if (err) { goto probe_subdev_out; } } else { for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) { err = v4l2_async_notifier_add_subdev( &vpif_obj.notifier, vpif_obj.config->asd[i]); if (err) goto probe_cleanup; } vpif_obj.notifier.ops = &vpif_async_ops; 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_cleanup; } } return 0; probe_cleanup: v4l2_async_notifier_cleanup(&vpif_obj.notifier); probe_subdev_out: kfree(vpif_obj.sd); vpif_unregister: v4l2_device_unregister(&vpif_obj.v4l2_dev); vpif_free: free_vpif_objs(); return err; } /* * vpif_remove: It un-register channels from V4L2 driver */ static int vpif_remove(struct platform_device *device) { struct channel_obj *ch; int i; if (vpif_obj.config->asd_sizes) { v4l2_async_notifier_unregister(&vpif_obj.notifier); v4l2_async_notifier_cleanup(&vpif_obj.notifier); } 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]; /* Unregister video device */ video_unregister_device(&ch->video_dev); } free_vpif_objs(); 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_start_streaming_called(&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_start_streaming_called(&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, .pm = &vpif_pm_ops, }, .probe = vpif_probe, .remove = vpif_remove, }; module_platform_driver(vpif_driver);
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