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path: root/drivers/media/platform/davinci/vpif_capture.c
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Diffstat (limited to 'drivers/media/platform/davinci/vpif_capture.c')
-rw-r--r--drivers/media/platform/davinci/vpif_capture.c2456
1 files changed, 2456 insertions, 0 deletions
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
new file mode 100644
index 000000000000..1b625b065c32
--- /dev/null
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -0,0 +1,2456 @@
+/*
+ * 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 <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/string.h>
+#include <linux/videodev2.h>
+#include <linux/wait.h>
+#include <linux/time.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-chip-ident.h>
+
+#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;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ vpif_dbg(2, debug, "vpif_buffer_queue\n");
+
+ /* add the buffer to the DMA queue */
+ list_add_tail(&buf->list, &common->dma_queue);
+}
+
+/**
+ * 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;
+ int ret;
+
+ /* If buffer queue is empty, return error */
+ if (list_empty(&common->dma_queue)) {
+ 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);
+ /* 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 */
+ 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
+ */
+ 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);
+ }
+ channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 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;
+
+ if (!vb2_is_streaming(vq))
+ return 0;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ /* release all active buffers */
+ 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);
+ }
+
+ 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)
+{
+ do_gettimeofday(&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;
+
+ 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);
+ 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 */
+ if (list_empty(&common->dma_queue))
+ continue;
+
+ 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 */
+ if (list_empty(&common->dma_queue) ||
+ (common->cur_frm != common->next_frm))
+ continue;
+
+ 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 = &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 (config->dv_preset == vid_ch->dv_preset) {
+ 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 vpif_capture_config *config = vpif_dev->platform_data;
+ struct video_device *vdev = video_devdata(filep);
+ struct common_obj *common;
+ struct video_obj *vid_ch;
+ struct channel_obj *ch;
+ struct vpif_fh *fh;
+ int i;
+
+ vpif_dbg(2, debug, "vpif_open\n");
+
+ ch = video_get_drvdata(vdev);
+
+ vid_ch = &ch->video;
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (NULL == ch->curr_subdev_info) {
+ /**
+ * search through the sub device to see a registered
+ * sub device and make it as current sub device
+ */
+ for (i = 0; i < config->subdev_count; i++) {
+ if (vpif_obj.sd[i]) {
+ /* the sub device is registered */
+ ch->curr_subdev_info = &config->subdev_info[i];
+ /* make first input as the current input */
+ vid_ch->input_idx = 0;
+ break;
+ }
+ }
+ if (i == config->subdev_count) {
+ vpif_err("No sub device registered\n");
+ return -ENOENT;
+ }
+ }
+
+ /* 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;
+
+ 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 (!common->alloc_ctx) {
+ vpif_err("Failed to get the context\n");
+ return -EINVAL;
+ }
+ 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);
+
+ vb2_queue_init(q);
+
+ /* 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(vpif_obj.sd[ch->curr_sd_index], video,
+ s_stream, 1);
+
+ if (ret && (ret != -ENOIOCTLCMD)) {
+ 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(vpif_obj.sd[ch->curr_sd_index], video,
+ s_stream, 0);
+
+ if (ret && (ret != -ENOIOCTLCMD))
+ vpif_dbg(1, debug, "stream off failed in subdev\n");
+
+ return vb2_streamoff(&common->buffer_queue, buftype);
+}
+
+/**
+ * vpif_map_sub_device_to_input() - Maps sub device to input
+ * @ch - ptr to channel
+ * @config - ptr to capture configuration
+ * @input_index - Given input index from application
+ * @sub_device_index - index into sd table
+ *
+ * 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 struct vpif_subdev_info *vpif_map_sub_device_to_input(
+ struct channel_obj *ch,
+ struct vpif_capture_config *vpif_cfg,
+ int input_index,
+ int *sub_device_index)
+{
+ struct vpif_capture_chan_config *chan_cfg;
+ struct vpif_subdev_info *subdev_info = NULL;
+ const char *subdev_name = NULL;
+ int i;
+
+ vpif_dbg(2, debug, "vpif_map_sub_device_to_input\n");
+
+ chan_cfg = &vpif_cfg->chan_config[ch->channel_id];
+
+ /**
+ * search through the inputs to find the sub device supporting
+ * the input
+ */
+ for (i = 0; i < chan_cfg->input_count; i++) {
+ /* For each sub device, loop through input */
+ if (i == input_index) {
+ subdev_name = chan_cfg->inputs[i].subdev_name;
+ break;
+ }
+ }
+
+ /* if reached maximum. return null */
+ if (i == chan_cfg->input_count || (NULL == subdev_name))
+ return subdev_info;
+
+ /* 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))
+ break;
+ }
+
+ if (i == vpif_cfg->subdev_count)
+ return subdev_info;
+
+ /* check if the sub device is registered */
+ if (NULL == vpif_obj.sd[i])
+ return NULL;
+
+ *sub_device_index = i;
+ return subdev_info;
+}
+
+/**
+ * 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(vpif_obj.sd[ch->curr_sd_index], video,
+ querystd, std_id);
+ if (ret < 0)
+ vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
+
+ return ret;
+}
+
+/**
+ * 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;
+ ch->video.dv_preset = V4L2_DV_INVALID;
+ memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_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(vpif_obj.sd[ch->curr_sd_index], core,
+ s_std, *std_id);
+ if (ret < 0)
+ vpif_dbg(1, debug, "Failed to set standard for sub devices\n");
+ return ret;
+}
+
+/**
+ * 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;
+ struct video_obj *vid_ch = &ch->video;
+
+ *index = vid_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];
+ struct video_obj *vid_ch = &ch->video;
+ struct vpif_subdev_info *subdev_info;
+ int ret = 0, sd_index = 0;
+ u32 input = 0, output = 0;
+
+ chan_cfg = &config->chan_config[ch->channel_id];
+
+ 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;
+ subdev_info = vpif_map_sub_device_to_input(ch, config, index,
+ &sd_index);
+ if (NULL == subdev_info) {
+ vpif_dbg(1, debug,
+ "couldn't lookup sub device for the input index\n");
+ return -EINVAL;
+ }
+
+ /* first setup input path from sub device to vpif */
+ if (config->setup_input_path) {
+ ret = config->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 (subdev_info->can_route) {
+ input = subdev_info->input;
+ output = subdev_info->output;
+ ret = v4l2_subdev_call(vpif_obj.sd[sd_index], video, s_routing,
+ input, output, 0);
+ if (ret < 0) {
+ vpif_dbg(1, debug, "Failed to set input\n");
+ return ret;
+ }
+ }
+ vid_ch->input_idx = index;
+ ch->curr_subdev_info = subdev_info;
+ ch->curr_sd_index = sd_index;
+ /* copy interface parameters to vpif */
+ ch->vpifparams.iface = subdev_info->vpif_if;
+
+ /* update tvnorms from the sub device input info */
+ ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
+ return ret;
+}
+
+/**
+ * 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->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ strlcpy(cap->driver, "vpif capture", sizeof(cap->driver));
+ strlcpy(cap->bus_info, "VPIF Platform", sizeof(cap->bus_info));
+ 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_presets() - ENUM_DV_PRESETS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @preset: input preset
+ */
+static int vpif_enum_dv_presets(struct file *file, void *priv,
+ struct v4l2_dv_enum_preset *preset)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+
+ return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
+ video, enum_dv_presets, preset);
+}
+
+/**
+ * vpif_query_dv_presets() - QUERY_DV_PRESET handler
+ * @file: file ptr
+ * @priv: file handle
+ * @preset: input preset
+ */
+static int vpif_query_dv_preset(struct file *file, void *priv,
+ struct v4l2_dv_preset *preset)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+
+ return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
+ video, query_dv_preset, preset);
+}
+/**
+ * vpif_s_dv_presets() - S_DV_PRESETS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @preset: input preset
+ */
+static int vpif_s_dv_preset(struct file *file, void *priv,
+ struct v4l2_dv_preset *preset)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ int ret = 0;
+
+ if (common->started) {
+ vpif_dbg(1, debug, "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 (ret)
+ return ret;
+
+ fh->initialized = 1;
+
+ /* Call encoder subdevice function to set the standard */
+ if (mutex_lock_interruptible(&common->lock))
+ return -ERESTARTSYS;
+
+ ch->video.dv_preset = preset->preset;
+ ch->video.stdid = V4L2_STD_UNKNOWN;
+ memset(&ch->video.bt_timings, 0, sizeof(ch->video.bt_timings));
+
+ /* Get the information about the standard */
+ if (vpif_update_std_info(ch)) {
+ vpif_dbg(1, debug, "Error getting the standard info\n");
+ ret = -EINVAL;
+ } else {
+ /* Configure the default format information */
+ vpif_config_format(ch);
+
+ ret = v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index],
+ video, s_dv_preset, preset);
+ }
+
+ mutex_unlock(&common->lock);
+
+ return ret;
+}
+/**
+ * vpif_g_dv_presets() - G_DV_PRESETS handler
+ * @file: file ptr
+ * @priv: file handle
+ * @preset: input preset
+ */
+static int vpif_g_dv_preset(struct file *file, void *priv,
+ struct v4l2_dv_preset *preset)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+
+ preset->preset = ch->video.dv_preset;
+
+ return 0;
+}
+
+/**
+ * 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->bt_timings;
+ 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(vpif_obj.sd[ch->curr_sd_index],
+ video, s_dv_timings, timings);
+ if (ret == -ENOIOCTLCMD) {
+ vpif_dbg(2, debug, "Custom DV timings not supported by "
+ "subdevice\n");
+ return -EINVAL;
+ }
+ 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;
+ }
+
+ *bt = timings->bt;
+
+ /* 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;
+ std_info->dv_preset = V4L2_DV_INVALID;
+
+ vid_ch->stdid = 0;
+ vid_ch->dv_preset = V4L2_DV_INVALID;
+ 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;
+ struct v4l2_bt_timings *bt = &vid_ch->bt_timings;
+
+ timings->bt = *bt;
+
+ 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(vpif_obj.sd[ch->curr_sd_index], 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,
+ struct v4l2_dbg_register *reg){
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+
+ return v4l2_subdev_call(vpif_obj.sd[ch->curr_sd_index], 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_presets = vpif_enum_dv_presets,
+ .vidioc_s_dv_preset = vpif_s_dv_preset,
+ .vidioc_g_dv_preset = vpif_g_dv_preset,
+ .vidioc_query_dv_preset = vpif_query_dv_preset,
+ .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, m, q, err;
+ 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;
+ }
+
+ k = 0;
+ while ((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {
+ for (i = res->start; i <= res->end; i++) {
+ if (request_irq(i, vpif_channel_isr, IRQF_SHARED,
+ "VPIF_Capture",
+ (void *)(&vpif_obj.dev[k]->channel_id))) {
+ err = -EBUSY;
+ i--;
+ goto vpif_int_err;
+ }
+ }
+ k++;
+ }
+
+ 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_dev_alloc_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;
+ }
+ }
+
+ 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);
+ err = video_register_device(ch->video_dev,
+ VFL_TYPE_GRABBER, (j ? 1 : 0));
+ if (err)
+ goto probe_out;
+
+ video_set_drvdata(ch->video_dev, ch);
+
+ }
+
+ 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 probe_out;
+ }
+
+ 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);
+
+ if (vpif_obj.sd[i])
+ vpif_obj.sd[i]->grp_id = 1 << i;
+ }
+
+ v4l2_info(&vpif_obj.v4l2_dev, "VPIF capture driver initialized\n");
+ return 0;
+
+probe_subdev_out:
+ /* free sub devices memory */
+ kfree(vpif_obj.sd);
+
+ j = VPIF_CAPTURE_MAX_DEVICES;
+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);
+ }
+
+vpif_dev_alloc_err:
+ k = VPIF_CAPTURE_MAX_DEVICES-1;
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, k);
+ i = res->end;
+
+vpif_int_err:
+ for (q = k; q >= 0; q--) {
+ for (m = i; m >= (int)res->start; m--)
+ free_irq(m, (void *)(&vpif_obj.dev[q]->channel_id));
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, q-1);
+ if (res)
+ i = res->end;
+ }
+ v4l2_device_unregister(&vpif_obj.v4l2_dev);
+ 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);

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