--- /dev/null
+/*
+ * vpif-display - VPIF display driver
+ * Display driver for TI DaVinci VPIF
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2014 Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed .as is. WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <media/v4l2-ioctl.h>
+
+#include "vpif.h"
+#include "vpif_display.h"
+
+MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(VPIF_DISPLAY_VERSION);
+
+#define VPIF_V4L2_STD (V4L2_STD_525_60 | V4L2_STD_625_50)
+
+#define vpif_err(fmt, arg...) v4l2_err(&vpif_obj.v4l2_dev, fmt, ## arg)
+#define vpif_dbg(level, debug, fmt, arg...) \
+ v4l2_dbg(level, debug, &vpif_obj.v4l2_dev, fmt, ## arg)
+
+static int debug = 1;
+
+module_param(debug, int, 0644);
+
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+
+#define VPIF_DRIVER_NAME "vpif_display"
+
+/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
+static int ycmux_mode;
+
+static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
+
+static struct vpif_device vpif_obj = { {NULL} };
+static struct device *vpif_dev;
+static void vpif_calculate_offsets(struct channel_obj *ch);
+static void vpif_config_addr(struct channel_obj *ch, int muxmode);
+
+static inline struct vpif_disp_buffer *to_vpif_buffer(struct vb2_buffer *vb)
+{
+ return container_of(vb, struct vpif_disp_buffer, vb);
+}
+
+/**
+ * vpif_buffer_prepare : callback function for buffer prepare
+ * @vb: ptr to vb2_buffer
+ *
+ * This is the callback function for buffer prepare when vb2_qbuf()
+ * function is called. The buffer is prepared and user space virtual address
+ * or user address is converted into physical address
+ */
+static int vpif_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
+ struct common_obj *common;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ vb2_set_plane_payload(vb, 0, common->fmt.fmt.pix.sizeimage);
+ if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
+ return -EINVAL;
+
+ vb->v4l2_buf.field = common->fmt.fmt.pix.field;
+
+ if (vb->vb2_queue->type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
+ unsigned long addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ if (!ISALIGNED(addr + common->ytop_off) ||
+ !ISALIGNED(addr + common->ybtm_off) ||
+ !ISALIGNED(addr + common->ctop_off) ||
+ !ISALIGNED(addr + common->cbtm_off)) {
+ vpif_err("buffer offset not aligned to 8 bytes\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * vpif_buffer_queue_setup : Callback function for buffer setup.
+ * @vq: vb2_queue ptr
+ * @fmt: v4l2 format
+ * @nbuffers: ptr to number of buffers requested by application
+ * @nplanes:: contains number of distinct video planes needed to hold a frame
+ * @sizes[]: contains the size (in bytes) of each plane.
+ * @alloc_ctxs: ptr to allocation context
+ *
+ * This callback function is called when reqbuf() is called to adjust
+ * the buffer count and buffer size
+ */
+static int vpif_buffer_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct channel_obj *ch = vb2_get_drv_priv(vq);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (fmt && fmt->fmt.pix.sizeimage < common->fmt.fmt.pix.sizeimage)
+ return -EINVAL;
+
+ if (vq->num_buffers + *nbuffers < 3)
+ *nbuffers = 3 - vq->num_buffers;
+
+ *nplanes = 1;
+ sizes[0] = fmt ? fmt->fmt.pix.sizeimage : common->fmt.fmt.pix.sizeimage;
+ alloc_ctxs[0] = common->alloc_ctx;
+
+ /* Calculate the offset for Y and C data in the buffer */
+ vpif_calculate_offsets(ch);
+
+ return 0;
+}
+
+/**
+ * vpif_buffer_queue : Callback function to add buffer to DMA queue
+ * @vb: ptr to vb2_buffer
+ *
+ * This callback fucntion queues the buffer to DMA engine
+ */
+static void vpif_buffer_queue(struct vb2_buffer *vb)
+{
+ struct vpif_disp_buffer *buf = to_vpif_buffer(vb);
+ struct channel_obj *ch = vb2_get_drv_priv(vb->vb2_queue);
+ struct common_obj *common;
+ unsigned long flags;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ /* add the buffer to the DMA queue */
+ spin_lock_irqsave(&common->irqlock, flags);
+ list_add_tail(&buf->list, &common->dma_queue);
+ spin_unlock_irqrestore(&common->irqlock, flags);
+}
+
+/**
+ * vpif_start_streaming : Starts the DMA engine for streaming
+ * @vb: ptr to vb2_buffer
+ * @count: number of buffers
+ */
+static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct vpif_display_config *vpif_config_data =
+ vpif_dev->platform_data;
+ struct channel_obj *ch = vb2_get_drv_priv(vq);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct vpif_params *vpif = &ch->vpifparams;
+ struct vpif_disp_buffer *buf, *tmp;
+ unsigned long addr, flags;
+ int ret;
+
+ spin_lock_irqsave(&common->irqlock, flags);
+
+ /* Initialize field_id */
+ ch->field_id = 0;
+
+ /* clock settings */
+ if (vpif_config_data->set_clock) {
+ ret = vpif_config_data->set_clock(ch->vpifparams.std_info.
+ ycmux_mode, ch->vpifparams.std_info.hd_sd);
+ if (ret < 0) {
+ vpif_err("can't set clock\n");
+ goto err;
+ }
+ }
+
+ /* set the parameters and addresses */
+ ret = vpif_set_video_params(vpif, ch->channel_id + 2);
+ if (ret < 0)
+ goto err;
+
+ ycmux_mode = ret;
+ vpif_config_addr(ch, ret);
+ /* Get the next frame from the buffer queue */
+ common->next_frm = common->cur_frm =
+ list_entry(common->dma_queue.next,
+ struct vpif_disp_buffer, list);
+
+ list_del(&common->cur_frm->list);
+ spin_unlock_irqrestore(&common->irqlock, flags);
+
+ addr = vb2_dma_contig_plane_dma_addr(&common->cur_frm->vb, 0);
+ common->set_addr((addr + common->ytop_off),
+ (addr + common->ybtm_off),
+ (addr + common->ctop_off),
+ (addr + common->cbtm_off));
+
+ /*
+ * Set interrupt for both the fields in VPIF
+ * Register enable channel in VPIF register
+ */
+ channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
+ if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
+ channel2_intr_assert();
+ channel2_intr_enable(1);
+ enable_channel2(1);
+ if (vpif_config_data->chan_config[VPIF_CHANNEL2_VIDEO].clip_en)
+ channel2_clipping_enable(1);
+ }
+
+ if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
+ channel3_intr_assert();
+ channel3_intr_enable(1);
+ enable_channel3(1);
+ if (vpif_config_data->chan_config[VPIF_CHANNEL3_VIDEO].clip_en)
+ channel3_clipping_enable(1);
+ }
+
+ return 0;
+
+err:
+ list_for_each_entry_safe(buf, tmp, &common->dma_queue, list) {
+ list_del(&buf->list);
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_QUEUED);
+ }
+ spin_unlock_irqrestore(&common->irqlock, flags);
+
+ return ret;
+}
+
+/**
+ * vpif_stop_streaming : Stop the DMA engine
+ * @vq: ptr to vb2_queue
+ *
+ * This callback stops the DMA engine and any remaining buffers
+ * in the DMA queue are released.
+ */
+static void vpif_stop_streaming(struct vb2_queue *vq)
+{
+ struct channel_obj *ch = vb2_get_drv_priv(vq);
+ struct common_obj *common;
+ unsigned long flags;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ /* Disable channel */
+ if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
+ enable_channel2(0);
+ channel2_intr_enable(0);
+ }
+ if (VPIF_CHANNEL3_VIDEO == ch->channel_id || ycmux_mode == 2) {
+ enable_channel3(0);
+ channel3_intr_enable(0);
+ }
+
+ /* release all active buffers */
+ spin_lock_irqsave(&common->irqlock, flags);
+ if (common->cur_frm == common->next_frm) {
+ vb2_buffer_done(&common->cur_frm->vb, VB2_BUF_STATE_ERROR);
+ } else {
+ if (common->cur_frm != NULL)
+ vb2_buffer_done(&common->cur_frm->vb,
+ VB2_BUF_STATE_ERROR);
+ if (common->next_frm != NULL)
+ vb2_buffer_done(&common->next_frm->vb,
+ VB2_BUF_STATE_ERROR);
+ }
+
+ while (!list_empty(&common->dma_queue)) {
+ common->next_frm = list_entry(common->dma_queue.next,
+ struct vpif_disp_buffer, list);
+ list_del(&common->next_frm->list);
+ vb2_buffer_done(&common->next_frm->vb, VB2_BUF_STATE_ERROR);
+ }
+ spin_unlock_irqrestore(&common->irqlock, flags);
+}
+
+static struct vb2_ops video_qops = {
+ .queue_setup = vpif_buffer_queue_setup,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .buf_prepare = vpif_buffer_prepare,
+ .start_streaming = vpif_start_streaming,
+ .stop_streaming = vpif_stop_streaming,
+ .buf_queue = vpif_buffer_queue,
+};
+
+static void process_progressive_mode(struct common_obj *common)
+{
+ unsigned long addr = 0;
+
+ spin_lock(&common->irqlock);
+ /* Get the next buffer from buffer queue */
+ common->next_frm = list_entry(common->dma_queue.next,
+ struct vpif_disp_buffer, list);
+ /* Remove that buffer from the buffer queue */
+ list_del(&common->next_frm->list);
+ spin_unlock(&common->irqlock);
+
+ /* Set top and bottom field addrs in VPIF registers */
+ addr = vb2_dma_contig_plane_dma_addr(&common->next_frm->vb, 0);
+ common->set_addr(addr + common->ytop_off,
+ addr + common->ybtm_off,
+ addr + common->ctop_off,
+ addr + common->cbtm_off);
+}
+
+static void process_interlaced_mode(int fid, struct common_obj *common)
+{
+ /* device field id and local field id are in sync */
+ /* If this is even field */
+ if (0 == fid) {
+ if (common->cur_frm == common->next_frm)
+ return;
+
+ /* one frame is displayed If next frame is
+ * available, release cur_frm and move on */
+ /* Copy frame display time */
+ v4l2_get_timestamp(&common->cur_frm->vb.v4l2_buf.timestamp);
+ /* Change status of the cur_frm */
+ vb2_buffer_done(&common->cur_frm->vb,
+ VB2_BUF_STATE_DONE);
+ /* Make cur_frm pointing to next_frm */
+ common->cur_frm = common->next_frm;
+
+ } else if (1 == fid) { /* odd field */
+ spin_lock(&common->irqlock);
+ if (list_empty(&common->dma_queue)
+ || (common->cur_frm != common->next_frm)) {
+ spin_unlock(&common->irqlock);
+ return;
+ }
+ spin_unlock(&common->irqlock);
+ /* one field is displayed configure the next
+ * frame if it is available else hold on current
+ * frame */
+ /* Get next from the buffer queue */
+ process_progressive_mode(common);
+ }
+}
+
+/*
+ * vpif_channel_isr: It changes status of the displayed buffer, takes next
+ * buffer from the queue and sets its address in VPIF registers
+ */
+static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
+{
+ struct vpif_device *dev = &vpif_obj;
+ struct channel_obj *ch;
+ struct common_obj *common;
+ int fid = -1, i;
+ int channel_id = 0;
+
+ channel_id = *(int *)(dev_id);
+ if (!vpif_intr_status(channel_id + 2))
+ return IRQ_NONE;
+
+ ch = dev->dev[channel_id];
+ for (i = 0; i < VPIF_NUMOBJECTS; i++) {
+ common = &ch->common[i];
+ /* If streaming is started in this channel */
+
+ if (1 == ch->vpifparams.std_info.frm_fmt) {
+ spin_lock(&common->irqlock);
+ if (list_empty(&common->dma_queue)) {
+ spin_unlock(&common->irqlock);
+ continue;
+ }
+ spin_unlock(&common->irqlock);
+
+ /* Progressive mode */
+ if (!channel_first_int[i][channel_id]) {
+ /* Mark status of the cur_frm to
+ * done and unlock semaphore on it */
+ v4l2_get_timestamp(&common->cur_frm->vb.
+ v4l2_buf.timestamp);
+ vb2_buffer_done(&common->cur_frm->vb,
+ VB2_BUF_STATE_DONE);
+ /* Make cur_frm pointing to next_frm */
+ common->cur_frm = common->next_frm;
+ }
+
+ channel_first_int[i][channel_id] = 0;
+ process_progressive_mode(common);
+ } else {
+ /* Interlaced mode */
+ /* If it is first interrupt, ignore it */
+
+ if (channel_first_int[i][channel_id]) {
+ channel_first_int[i][channel_id] = 0;
+ continue;
+ }
+
+ if (0 == i) {
+ ch->field_id ^= 1;
+ /* Get field id from VPIF registers */
+ fid = vpif_channel_getfid(ch->channel_id + 2);
+ /* If fid does not match with stored field id */
+ if (fid != ch->field_id) {
+ /* Make them in sync */
+ if (0 == fid)
+ ch->field_id = fid;
+
+ return IRQ_HANDLED;
+ }
+ }
+ process_interlaced_mode(fid, common);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int vpif_update_std_info(struct channel_obj *ch)
+{
+ struct video_obj *vid_ch = &ch->video;
+ struct vpif_params *vpifparams = &ch->vpifparams;
+ struct vpif_channel_config_params *std_info = &vpifparams->std_info;
+ const struct vpif_channel_config_params *config;
+
+ int i;
+
+ for (i = 0; i < vpif_ch_params_count; i++) {
+ config = &vpif_ch_params[i];
+ if (config->hd_sd == 0) {
+ vpif_dbg(2, debug, "SD format\n");
+ if (config->stdid & vid_ch->stdid) {
+ memcpy(std_info, config, sizeof(*config));
+ break;
+ }
+ }
+ }
+
+ if (i == vpif_ch_params_count) {
+ vpif_dbg(1, debug, "Format not found\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vpif_update_resolution(struct channel_obj *ch)
+{
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct video_obj *vid_ch = &ch->video;
+ struct vpif_params *vpifparams = &ch->vpifparams;
+ struct vpif_channel_config_params *std_info = &vpifparams->std_info;
+
+ if (!vid_ch->stdid && !vid_ch->dv_timings.bt.height)
+ return -EINVAL;
+
+ if (vid_ch->stdid) {
+ if (vpif_update_std_info(ch))
+ return -EINVAL;
+ }
+
+ common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
+ common->fmt.fmt.pix.width = std_info->width;
+ common->fmt.fmt.pix.height = std_info->height;
+ vpif_dbg(1, debug, "Pixel details: Width = %d,Height = %d\n",
+ common->fmt.fmt.pix.width, common->fmt.fmt.pix.height);
+
+ /* Set height and width paramateres */
+ common->height = std_info->height;
+ common->width = std_info->width;
+ common->fmt.fmt.pix.sizeimage = common->height * common->width * 2;
+
+ if (vid_ch->stdid)
+ common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ else
+ common->fmt.fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
+
+ if (ch->vpifparams.std_info.frm_fmt)
+ common->fmt.fmt.pix.field = V4L2_FIELD_NONE;
+ else
+ common->fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
+
+ return 0;
+}
+
+/*
+ * vpif_calculate_offsets: This function calculates buffers offset for Y and C
+ * in the top and bottom field
+ */
+static void vpif_calculate_offsets(struct channel_obj *ch)
+{
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct vpif_params *vpifparams = &ch->vpifparams;
+ enum v4l2_field field = common->fmt.fmt.pix.field;
+ struct video_obj *vid_ch = &ch->video;
+ unsigned int hpitch, 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;
+
+ cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ strlcpy(cap->driver, VPIF_DRIVER_NAME, sizeof(cap->driver));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ dev_name(vpif_dev));
+ strlcpy(cap->card, config->card_name, sizeof(cap->card));
+
+ return 0;
+}
+
+static int vpif_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmt)
+{
+ if (fmt->index != 0)
+ return -EINVAL;
+
+ /* Fill in the information about format */
+ fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ strcpy(fmt->description, "YCbCr4:2:2 YC Planar");
+ fmt->pixelformat = V4L2_PIX_FMT_YUV422P;
+ fmt->flags = 0;
+ return 0;
+}
+
+static int vpif_g_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ /* Check the validity of the buffer type */
+ if (common->fmt.type != fmt->type)
+ return -EINVAL;
+
+ if (vpif_update_resolution(ch))
+ return -EINVAL;
+ *fmt = common->fmt;
+ return 0;
+}
+
+static int vpif_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+
+ /*
+ * to supress v4l-compliance warnings silently correct
+ * the pixelformat
+ */
+ if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
+ pixfmt->pixelformat = common->fmt.fmt.pix.pixelformat;
+
+ if (vpif_update_resolution(ch))
+ return -EINVAL;
+
+ pixfmt->colorspace = common->fmt.fmt.pix.colorspace;
+ pixfmt->field = common->fmt.fmt.pix.field;
+ pixfmt->bytesperline = common->fmt.fmt.pix.width;
+ pixfmt->width = common->fmt.fmt.pix.width;
+ pixfmt->height = common->fmt.fmt.pix.height;
+ pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height * 2;
+
+ return 0;
+}
+
+static int vpif_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+ int ret;
+
+ if (vb2_is_busy(&common->buffer_queue))
+ return -EBUSY;
+
+ ret = vpif_try_fmt_vid_out(file, priv, fmt);
+ if (ret)
+ return ret;
+
+ /* store the pix format in the channel object */
+ common->fmt.fmt.pix = *pixfmt;
+
+ /* store the format in the channel object */
+ common->fmt = *fmt;
+ return 0;
+}
+
+static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct vpif_display_chan_config *chan_cfg;
+ struct v4l2_output output;
+ int ret;
+
+ if (config->chan_config[ch->channel_id].outputs == NULL)
+ return -ENODATA;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ output = chan_cfg->outputs[ch->output_idx].output;
+ if (output.capabilities != V4L2_OUT_CAP_STD)
+ return -ENODATA;
+
+ if (vb2_is_busy(&common->buffer_queue))
+ return -EBUSY;
+
+
+ if (!(std_id & VPIF_V4L2_STD))
+ return -EINVAL;
+
+ /* Call encoder subdevice function to set the standard */
+ ch->video.stdid = std_id;
+ memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
+ /* Get the information about the standard */
+ if (vpif_update_resolution(ch))
+ return -EINVAL;
+
+ common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
+
+ ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
+ s_std_output, std_id);
+ if (ret < 0) {
+ vpif_err("Failed to set output standard\n");
+ return ret;
+ }
+
+ ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
+ s_std, std_id);
+ if (ret < 0)
+ vpif_err("Failed to set standard for sub devices\n");
+ return ret;
+}
+
+static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_display_chan_config *chan_cfg;
+ struct v4l2_output output;
+
+ if (config->chan_config[ch->channel_id].outputs == NULL)
+ return -ENODATA;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ output = chan_cfg->outputs[ch->output_idx].output;
+ if (output.capabilities != V4L2_OUT_CAP_STD)
+ return -ENODATA;
+
+ *std = ch->video.stdid;
+ return 0;
+}
+
+static int vpif_enum_output(struct file *file, void *fh,
+ struct v4l2_output *output)
+{
+
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_display_chan_config *chan_cfg;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ if (output->index >= chan_cfg->output_count) {
+ vpif_dbg(1, debug, "Invalid output index\n");
+ return -EINVAL;
+ }
+
+ *output = chan_cfg->outputs[output->index].output;
+ return 0;
+}
+
+/**
+ * vpif_output_to_subdev() - Maps output to sub device
+ * @vpif_cfg - global config ptr
+ * @chan_cfg - channel config ptr
+ * @index - Given output index from application
+ *
+ * lookup the sub device information for a given output index.
+ * we report all the output to application. output table also
+ * has sub device name for the each output
+ */
+static int
+vpif_output_to_subdev(struct vpif_display_config *vpif_cfg,
+ struct vpif_display_chan_config *chan_cfg, int index)
+{
+ struct vpif_subdev_info *subdev_info;
+ const char *subdev_name;
+ int i;
+
+ vpif_dbg(2, debug, "vpif_output_to_subdev\n");
+
+ if (chan_cfg->outputs == NULL)
+ return -1;
+
+ subdev_name = chan_cfg->outputs[index].subdev_name;
+ if (subdev_name == NULL)
+ return -1;
+
+ /* loop through the sub device list to get the sub device info */
+ for (i = 0; i < vpif_cfg->subdev_count; i++) {
+ subdev_info = &vpif_cfg->subdevinfo[i];
+ if (!strcmp(subdev_info->name, subdev_name))
+ return i;
+ }
+ return -1;
+}
+
+/**
+ * vpif_set_output() - Select an output
+ * @vpif_cfg - global config ptr
+ * @ch - channel
+ * @index - Given output index from application
+ *
+ * Select the given output.
+ */
+static int vpif_set_output(struct vpif_display_config *vpif_cfg,
+ struct channel_obj *ch, int index)
+{
+ struct vpif_display_chan_config *chan_cfg =
+ &vpif_cfg->chan_config[ch->channel_id];
+ struct 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 != NULL)
+ /* update tvnorms from the sub device output info */
+ ch->video_dev.tvnorms = chan_cfg->outputs[index].output.std;
+ return 0;
+}
+
+static int vpif_s_output(struct file *file, void *priv, unsigned int i)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_display_chan_config *chan_cfg;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (vb2_is_busy(&common->buffer_queue))
+ return -EBUSY;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+
+ if (i >= chan_cfg->output_count)
+ return -EINVAL;
+
+ return vpif_set_output(config, ch, i);
+}
+
+static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+
+ *i = ch->output_idx;
+
+ return 0;
+}
+
+/**
+ * vpif_enum_dv_timings() - ENUM_DV_TIMINGS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @timings: input timings
+ */
+static int
+vpif_enum_dv_timings(struct file *file, void *priv,
+ struct v4l2_enum_dv_timings *timings)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_display_chan_config *chan_cfg;
+ struct v4l2_output output;
+ int ret;
+
+ if (config->chan_config[ch->channel_id].outputs == NULL)
+ return -ENODATA;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ output = chan_cfg->outputs[ch->output_idx].output;
+ if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
+ return -ENODATA;
+
+ timings->pad = 0;
+
+ ret = v4l2_subdev_call(ch->sd, pad, enum_dv_timings, timings);
+ if (ret == -ENOIOCTLCMD || ret == -ENODEV)
+ return -EINVAL;
+ return ret;
+}
+
+/**
+ * vpif_s_dv_timings() - S_DV_TIMINGS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @timings: digital video timings
+ */
+static int vpif_s_dv_timings(struct file *file, void *priv,
+ struct v4l2_dv_timings *timings)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_params *vpifparams = &ch->vpifparams;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct vpif_channel_config_params *std_info = &vpifparams->std_info;
+ struct video_obj *vid_ch = &ch->video;
+ struct v4l2_bt_timings *bt = &vid_ch->dv_timings.bt;
+ struct vpif_display_chan_config *chan_cfg;
+ struct v4l2_output output;
+ int ret;
+
+ if (config->chan_config[ch->channel_id].outputs == NULL)
+ return -ENODATA;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ output = chan_cfg->outputs[ch->output_idx].output;
+ if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
+ return -ENODATA;
+
+ if (vb2_is_busy(&common->buffer_queue))
+ return -EBUSY;
+
+ if (timings->type != V4L2_DV_BT_656_1120) {
+ vpif_dbg(2, debug, "Timing type not defined\n");
+ return -EINVAL;
+ }
+
+ /* Configure subdevice timings, if any */
+ ret = v4l2_subdev_call(ch->sd, video, s_dv_timings, timings);
+ if (ret == -ENOIOCTLCMD || ret == -ENODEV)
+ ret = 0;
+ if (ret < 0) {
+ vpif_dbg(2, debug, "Error setting custom DV timings\n");
+ return ret;
+ }
+
+ if (!(timings->bt.width && timings->bt.height &&
+ (timings->bt.hbackporch ||
+ timings->bt.hfrontporch ||
+ timings->bt.hsync) &&
+ timings->bt.vfrontporch &&
+ (timings->bt.vbackporch ||
+ timings->bt.vsync))) {
+ vpif_dbg(2, debug, "Timings for width, height, "
+ "horizontal back porch, horizontal sync, "
+ "horizontal front porch, vertical back porch, "
+ "vertical sync and vertical back porch "
+ "must be defined\n");
+ return -EINVAL;
+ }
+
+ vid_ch->dv_timings = *timings;
+
+ /* Configure video port timings */
+
+ std_info->eav2sav = V4L2_DV_BT_BLANKING_WIDTH(bt) - 8;
+ std_info->sav2eav = bt->width;
+
+ std_info->l1 = 1;
+ std_info->l3 = bt->vsync + bt->vbackporch + 1;
+
+ std_info->vsize = V4L2_DV_BT_FRAME_HEIGHT(bt);
+ if (bt->interlaced) {
+ if (bt->il_vbackporch || bt->il_vfrontporch || bt->il_vsync) {
+ std_info->l5 = std_info->vsize/2 -
+ (bt->vfrontporch - 1);
+ std_info->l7 = std_info->vsize/2 + 1;
+ std_info->l9 = std_info->l7 + bt->il_vsync +
+ bt->il_vbackporch + 1;
+ std_info->l11 = std_info->vsize -
+ (bt->il_vfrontporch - 1);
+ } else {
+ vpif_dbg(2, debug, "Required timing values for "
+ "interlaced BT format missing\n");
+ return -EINVAL;
+ }
+ } else {
+ std_info->l5 = std_info->vsize - (bt->vfrontporch - 1);
+ }
+ strncpy(std_info->name, "Custom timings BT656/1120",
+ VPIF_MAX_NAME);
+ std_info->width = bt->width;
+ std_info->height = bt->height;
+ std_info->frm_fmt = bt->interlaced ? 0 : 1;
+ std_info->ycmux_mode = 0;
+ std_info->capture_format = 0;
+ std_info->vbi_supported = 0;
+ std_info->hd_sd = 1;
+ std_info->stdid = 0;
+ vid_ch->stdid = 0;
+
+ return 0;
+}
+
+/**
+ * vpif_g_dv_timings() - G_DV_TIMINGS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @timings: digital video timings
+ */
+static int vpif_g_dv_timings(struct file *file, void *priv,
+ struct v4l2_dv_timings *timings)
+{
+ struct vpif_display_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(file);
+ struct channel_obj *ch = video_get_drvdata(vdev);
+ struct vpif_display_chan_config *chan_cfg;
+ struct video_obj *vid_ch = &ch->video;
+ struct v4l2_output output;
+
+ if (config->chan_config[ch->channel_id].outputs == NULL)
+ goto error;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+ output = chan_cfg->outputs[ch->output_idx].output;
+
+ if (output.capabilities != V4L2_OUT_CAP_DV_TIMINGS)
+ goto error;
+
+ *timings = vid_ch->dv_timings;
+
+ return 0;
+error:
+ return -ENODATA;
+}
+
+/*
+ * vpif_log_status() - Status information
+ * @file: file ptr
+ * @priv: file handle
+ *
+ * Returns zero.
+ */
+static int vpif_log_status(struct file *filep, void *priv)
+{
+ /* status for sub devices */
+ v4l2_device_call_all(&vpif_obj.v4l2_dev, 0, core, log_status);
+
+ return 0;
+}
+
+/* vpif display ioctl operations */
+static const struct v4l2_ioctl_ops vpif_ioctl_ops = {
+ .vidioc_querycap = vpif_querycap,
+ .vidioc_enum_fmt_vid_out = vpif_enum_fmt_vid_out,
+ .vidioc_g_fmt_vid_out = vpif_g_fmt_vid_out,
+ .vidioc_s_fmt_vid_out = vpif_s_fmt_vid_out,
+ .vidioc_try_fmt_vid_out = vpif_try_fmt_vid_out,
+
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+
+ .vidioc_s_std = vpif_s_std,
+ .vidioc_g_std = vpif_g_std,
+
+ .vidioc_enum_output = vpif_enum_output,
+ .vidioc_s_output = vpif_s_output,
+ .vidioc_g_output = vpif_g_output,
+
+ .vidioc_enum_dv_timings = vpif_enum_dv_timings,
+ .vidioc_s_dv_timings = vpif_s_dv_timings,
+ .vidioc_g_dv_timings = vpif_g_dv_timings,
+
+ .vidioc_log_status = vpif_log_status,
+};
+
+static const struct v4l2_file_operations vpif_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap,
+ .poll = vb2_fop_poll
+};
+
+/*Configure the channels, buffer sizei, request irq */
+static int initialize_vpif(void)
+{
+ int free_channel_objects_index;
+ int err, i, j;
+
+ /* Allocate memory for six channel objects */
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+ vpif_obj.dev[i] =
+ kzalloc(sizeof(struct channel_obj), GFP_KERNEL);
+ /* If memory allocation fails, return error */
+ if (!vpif_obj.dev[i]) {
+ free_channel_objects_index = i;
+ err = -ENOMEM;
+ goto vpif_init_free_channel_objects;
+ }
+ }
+
+ return 0;
+
+vpif_init_free_channel_objects:
+ for (j = 0; j < free_channel_objects_index; j++)
+ kfree(vpif_obj.dev[j]);
+ return err;
+}
+
+static int vpif_async_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev,
+ struct v4l2_async_subdev *asd)
+{
+ int i;
+
+ for (i = 0; i < vpif_obj.config->subdev_count; i++)
+ if (!strcmp(vpif_obj.config->subdevinfo[i].name,
+ subdev->name)) {
+ vpif_obj.sd[i] = subdev;
+ vpif_obj.sd[i]->grp_id = 1 << i;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int vpif_probe_complete(void)
+{
+ struct common_obj *common;
+ struct video_device *vdev;
+ struct channel_obj *ch;
+ struct vb2_queue *q;
+ int j, err, k;
+
+ for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
+ ch = vpif_obj.dev[j];
+ /* Initialize field of the channel objects */
+ for (k = 0; k < VPIF_NUMOBJECTS; k++) {
+ common = &ch->common[k];
+ spin_lock_init(&common->irqlock);
+ mutex_init(&common->lock);
+ common->set_addr = NULL;
+ common->ytop_off = 0;
+ common->ybtm_off = 0;
+ common->ctop_off = 0;
+ common->cbtm_off = 0;
+ common->cur_frm = NULL;
+ common->next_frm = NULL;
+ memset(&common->fmt, 0, sizeof(common->fmt));
+ }
+ ch->initialized = 0;
+ if (vpif_obj.config->subdev_count)
+ ch->sd = vpif_obj.sd[0];
+ ch->channel_id = j;
+
+ memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
+
+ ch->common[VPIF_VIDEO_INDEX].fmt.type =
+ V4L2_BUF_TYPE_VIDEO_OUTPUT;
+
+ /* select output 0 */
+ err = vpif_set_output(vpif_obj.config, ch, 0);
+ if (err)
+ goto probe_out;
+
+ /* set initial format */
+ ch->video.stdid = V4L2_STD_525_60;
+ memset(&ch->video.dv_timings, 0, sizeof(ch->video.dv_timings));
+ vpif_update_resolution(ch);
+
+ /* Initialize vb2 queue */
+ q = &common->buffer_queue;
+ q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ q->drv_priv = ch;
+ q->ops = &video_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct vpif_disp_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->min_buffers_needed = 1;
+ q->lock = &common->lock;
+ err = vb2_queue_init(q);
+ if (err) {
+ vpif_err("vpif_display: vb2_queue_init() failed\n");
+ goto probe_out;
+ }
+
+ common->alloc_ctx = vb2_dma_contig_init_ctx(vpif_dev);
+ if (IS_ERR(common->alloc_ctx)) {
+ vpif_err("Failed to get the context\n");
+ err = PTR_ERR(common->alloc_ctx);
+ goto probe_out;
+ }
+
+ INIT_LIST_HEAD(&common->dma_queue);
+
+ /* register video device */
+ vpif_dbg(1, debug, "channel=%p,channel->video_dev=%p\n",
+ ch, &ch->video_dev);
+
+ /* Initialize the video_device structure */
+ vdev = &ch->video_dev;
+ strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
+ vdev->release = video_device_release_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;
+ video_set_drvdata(&ch->video_dev, ch);
+ err = video_register_device(vdev, VFL_TYPE_GRABBER,
+ (j ? 3 : 2));
+ if (err < 0)
+ goto probe_out;
+ }
+
+ return 0;
+
+probe_out:
+ for (k = 0; k < j; k++) {
+ ch = vpif_obj.dev[k];
+ common = &ch->common[k];
+ vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
+ video_unregister_device(&ch->video_dev);
+ }
+ return err;
+}
+
+static int vpif_async_complete(struct v4l2_async_notifier *notifier)
+{
+ return vpif_probe_complete();
+}
+
+/*
+ * vpif_probe: This function creates device entries by register itself to the
+ * V4L2 driver and initializes fields of each channel objects
+ */
+static __init int vpif_probe(struct platform_device *pdev)
+{
+ struct vpif_subdev_info *subdevdata;
+ struct i2c_adapter *i2c_adap;
+ struct resource *res;
+ int subdev_count;
+ int res_idx = 0;
+ int i, err;
+
+ vpif_dev = &pdev->dev;
+ err = initialize_vpif();
+
+ if (err) {
+ v4l2_err(vpif_dev->driver, "Error initializing vpif\n");
+ return err;
+ }
+
+ err = v4l2_device_register(vpif_dev, &vpif_obj.v4l2_dev);
+ if (err) {
+ v4l2_err(vpif_dev->driver, "Error registering v4l2 device\n");
+ return err;
+ }
+
+ while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, res_idx))) {
+ err = devm_request_irq(&pdev->dev, res->start, vpif_channel_isr,
+ IRQF_SHARED, VPIF_DRIVER_NAME,
+ (void *)(&vpif_obj.dev[res_idx]->
+ channel_id));
+ if (err) {
+ err = -EINVAL;
+ vpif_err("VPIF IRQ request failed\n");
+ goto vpif_unregister;
+ }
+ res_idx++;
+ }
+
+ vpif_obj.config = pdev->dev.platform_data;
+ subdev_count = vpif_obj.config->subdev_count;
+ subdevdata = vpif_obj.config->subdevinfo;
+ vpif_obj.sd = kzalloc(sizeof(struct v4l2_subdev *) * subdev_count,
+ GFP_KERNEL);
+ if (vpif_obj.sd == NULL) {
+ vpif_err("unable to allocate memory for subdevice pointers\n");
+ err = -ENOMEM;
+ goto vpif_unregister;
+ }
+
+ if (!vpif_obj.config->asd_sizes) {
+ i2c_adap = i2c_get_adapter(1);
+ for (i = 0; i < subdev_count; i++) {
+ vpif_obj.sd[i] =
+ v4l2_i2c_new_subdev_board(&vpif_obj.v4l2_dev,
+ i2c_adap,
+ &subdevdata[i].
+ board_info,
+ NULL);
+ if (!vpif_obj.sd[i]) {
+ vpif_err("Error registering v4l2 subdevice\n");
+ err = -ENODEV;
+ goto probe_subdev_out;
+ }
+
+ if (vpif_obj.sd[i])
+ vpif_obj.sd[i]->grp_id = 1 << i;
+ }
+ vpif_probe_complete();
+ } else {
+ vpif_obj.notifier.subdevs = vpif_obj.config->asd;
+ vpif_obj.notifier.num_subdevs = vpif_obj.config->asd_sizes[0];
+ vpif_obj.notifier.bound = vpif_async_bound;
+ vpif_obj.notifier.complete = vpif_async_complete;
+ err = v4l2_async_notifier_register(&vpif_obj.v4l2_dev,
+ &vpif_obj.notifier);
+ if (err) {
+ vpif_err("Error registering async notifier\n");
+ err = -EINVAL;
+ goto probe_subdev_out;
+ }
+ }
+
+ return 0;
+
+probe_subdev_out:
+ kfree(vpif_obj.sd);
+vpif_unregister:
+ v4l2_device_unregister(&vpif_obj.v4l2_dev);
+
+ return err;
+}
+
+/*
+ * vpif_remove: It un-register channels from V4L2 driver
+ */
+static int vpif_remove(struct platform_device *device)
+{
+ struct common_obj *common;
+ struct channel_obj *ch;
+ int i;
+
+ v4l2_device_unregister(&vpif_obj.v4l2_dev);
+
+ kfree(vpif_obj.sd);
+ /* un-register device */
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the channel object */
+ ch = vpif_obj.dev[i];
+ common = &ch->common[VPIF_VIDEO_INDEX];
+ vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
+ /* Unregister video device */
+ video_unregister_device(&ch->video_dev);
+ kfree(vpif_obj.dev[i]);
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int vpif_suspend(struct device *dev)
+{
+ struct common_obj *common;
+ struct channel_obj *ch;
+ int i;
+
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the channel object */
+ ch = vpif_obj.dev[i];
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (!vb2_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);
Code Review / kvmfornfv.git / blobdiff