--- /dev/null
+/*
+ * vpif-display - VPIF display driver
+ * Display driver for TI DaVinci VPIF
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.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/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/version.h>
+
+#include <asm/irq.h>
+#include <asm/page.h>
+
+#include <media/adv7343.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+
+#include <mach/dm646x.h>
+
+#include "vpif_display.h"
+#include "vpif.h"
+
+MODULE_DESCRIPTION("TI DaVinci VPIF Display driver");
+MODULE_LICENSE("GPL");
+
+#define DM646X_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;
+static u32 ch2_numbuffers = 3;
+static u32 ch3_numbuffers = 3;
+static u32 ch2_bufsize = 1920 * 1080 * 2;
+static u32 ch3_bufsize = 720 * 576 * 2;
+
+module_param(debug, int, 0644);
+module_param(ch2_numbuffers, uint, S_IRUGO);
+module_param(ch3_numbuffers, uint, S_IRUGO);
+module_param(ch2_bufsize, uint, S_IRUGO);
+module_param(ch3_bufsize, uint, S_IRUGO);
+
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+MODULE_PARM_DESC(ch2_numbuffers, "Channel2 buffer count (default:3)");
+MODULE_PARM_DESC(ch3_numbuffers, "Channel3 buffer count (default:3)");
+MODULE_PARM_DESC(ch2_bufsize, "Channel2 buffer size (default:1920 x 1080 x 2)");
+MODULE_PARM_DESC(ch3_bufsize, "Channel3 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,
+};
+
+static struct vpif_device vpif_obj = { {NULL} };
+static struct device *vpif_dev;
+
+static const struct vpif_channel_config_params ch_params[] = {
+ {
+ "NTSC", 720, 480, 30, 0, 1, 268, 1440, 1, 23, 263, 266,
+ 286, 525, 525, 0, 1, 0, V4L2_STD_525_60,
+ },
+ {
+ "PAL", 720, 576, 25, 0, 1, 280, 1440, 1, 23, 311, 313,
+ 336, 624, 625, 0, 1, 0, V4L2_STD_625_50,
+ },
+};
+
+/*
+ * vpif_uservirt_to_phys: This function is used to convert user
+ * space virtual address to physical address.
+ */
+static u32 vpif_uservirt_to_phys(u32 virtp)
+{
+ struct mm_struct *mm = current->mm;
+ unsigned long physp = 0;
+ struct vm_area_struct *vma;
+
+ vma = find_vma(mm, virtp);
+
+ /* For kernel direct-mapped memory, take the easy way */
+ if (virtp >= PAGE_OFFSET) {
+ physp = virt_to_phys((void *)virtp);
+ } else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) {
+ /* this will catch, kernel-allocated, mmaped-to-usermode addr */
+ physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
+ } else {
+ /* otherwise, use get_user_pages() for general userland pages */
+ int res, nr_pages = 1;
+ struct page *pages;
+ down_read(¤t->mm->mmap_sem);
+
+ res = get_user_pages(current, current->mm,
+ virtp, nr_pages, 1, 0, &pages, NULL);
+ up_read(¤t->mm->mmap_sem);
+
+ if (res == nr_pages) {
+ physp = __pa(page_address(&pages[0]) +
+ (virtp & ~PAGE_MASK));
+ } else {
+ vpif_err("get_user_pages failed\n");
+ return 0;
+ }
+ }
+
+ return physp;
+}
+
+/*
+ * buffer_prepare: This is the callback function called from videobuf_qbuf()
+ * function the buffer is prepared and user space virtual address is converted
+ * into physical address
+ */
+static int vpif_buffer_prepare(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct vpif_fh *fh = q->priv_data;
+ struct common_obj *common;
+ unsigned long addr;
+
+ common = &fh->channel->common[VPIF_VIDEO_INDEX];
+ if (VIDEOBUF_NEEDS_INIT == vb->state) {
+ vb->width = common->width;
+ vb->height = common->height;
+ vb->size = vb->width * vb->height;
+ vb->field = field;
+ }
+ vb->state = VIDEOBUF_PREPARED;
+
+ /* if user pointer memory mechanism is used, get the physical
+ * address of the buffer */
+ if (V4L2_MEMORY_USERPTR == common->memory) {
+ if (!vb->baddr) {
+ vpif_err("buffer_address is 0\n");
+ return -EINVAL;
+ }
+
+ vb->boff = vpif_uservirt_to_phys(vb->baddr);
+ if (!ISALIGNED(vb->boff))
+ goto buf_align_exit;
+ }
+
+ addr = vb->boff;
+ if (q->streaming && (V4L2_BUF_TYPE_SLICED_VBI_OUTPUT != q->type)) {
+ if (!ISALIGNED(addr + common->ytop_off) ||
+ !ISALIGNED(addr + common->ybtm_off) ||
+ !ISALIGNED(addr + common->ctop_off) ||
+ !ISALIGNED(addr + common->cbtm_off))
+ goto buf_align_exit;
+ }
+ return 0;
+
+buf_align_exit:
+ vpif_err("buffer offset not aligned to 8 bytes\n");
+ return -EINVAL;
+}
+
+/*
+ * vpif_buffer_setup: This function allocates memory for the buffers
+ */
+static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count,
+ unsigned int *size)
+{
+ struct vpif_fh *fh = q->priv_data;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (V4L2_MEMORY_MMAP != common->memory)
+ return 0;
+
+ *size = config_params.channel_bufsize[ch->channel_id];
+ if (*count < config_params.min_numbuffers)
+ *count = config_params.min_numbuffers;
+
+ return 0;
+}
+
+/*
+ * vpif_buffer_queue: This function adds the buffer to DMA queue
+ */
+static void vpif_buffer_queue(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ struct vpif_fh *fh = q->priv_data;
+ struct common_obj *common;
+
+ common = &fh->channel->common[VPIF_VIDEO_INDEX];
+
+ /* add the buffer to the DMA queue */
+ list_add_tail(&vb->queue, &common->dma_queue);
+ vb->state = VIDEOBUF_QUEUED;
+}
+
+/*
+ * vpif_buffer_release: This function is called from the videobuf layer to
+ * free memory allocated to the buffers
+ */
+static void vpif_buffer_release(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ struct vpif_fh *fh = q->priv_data;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common;
+ unsigned int buf_size = 0;
+
+ common = &ch->common[VPIF_VIDEO_INDEX];
+
+ videobuf_dma_contig_free(q, vb);
+ vb->state = VIDEOBUF_NEEDS_INIT;
+
+ if (V4L2_MEMORY_MMAP != common->memory)
+ return;
+
+ buf_size = config_params.channel_bufsize[ch->channel_id];
+}
+
+static struct videobuf_queue_ops video_qops = {
+ .buf_setup = vpif_buffer_setup,
+ .buf_prepare = vpif_buffer_prepare,
+ .buf_queue = vpif_buffer_queue,
+ .buf_release = vpif_buffer_release,
+};
+static u8 channel_first_int[VPIF_NUMOBJECTS][2] = { {1, 1} };
+
+static void process_progressive_mode(struct common_obj *common)
+{
+ unsigned long addr = 0;
+
+ /* Get the next buffer from buffer queue */
+ common->next_frm = list_entry(common->dma_queue.next,
+ struct videobuf_buffer, queue);
+ /* Remove that buffer from the buffer queue */
+ list_del(&common->next_frm->queue);
+ /* Mark status of the buffer as active */
+ common->next_frm->state = VIDEOBUF_ACTIVE;
+
+ /* Set top and bottom field addrs in VPIF registers */
+ addr = videobuf_to_dma_contig(common->next_frm);
+ 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 */
+ do_gettimeofday(&common->cur_frm->ts);
+ /* Change status of the cur_frm */
+ common->cur_frm->state = VIDEOBUF_DONE;
+ /* unlock semaphore on cur_frm */
+ wake_up_interruptible(&common->cur_frm->done);
+ /* Make cur_frm pointing to next_frm */
+ common->cur_frm = common->next_frm;
+
+ } else if (1 == fid) { /* odd field */
+ if (list_empty(&common->dma_queue)
+ || (common->cur_frm != common->next_frm)) {
+ return;
+ }
+ /* one field is displayed configure the next
+ * frame if it is available else hold on current
+ * frame */
+ /* Get next from the buffer queue */
+ process_progressive_mode(common);
+
+ }
+}
+
+/*
+ * vpif_channel_isr: It changes status of the displayed buffer, takes next
+ * buffer from the queue and sets its address in VPIF registers
+ */
+static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
+{
+ struct vpif_device *dev = &vpif_obj;
+ struct channel_obj *ch;
+ struct common_obj *common;
+ enum v4l2_field field;
+ int fid = -1, i;
+ int channel_id = 0;
+
+ channel_id = *(int *)(dev_id);
+ ch = dev->dev[channel_id];
+ field = ch->common[VPIF_VIDEO_INDEX].fmt.fmt.pix.field;
+ for (i = 0; i < VPIF_NUMOBJECTS; i++) {
+ common = &ch->common[i];
+ /* If streaming is started in this channel */
+ if (0 == common->started)
+ continue;
+
+ if (1 == ch->vpifparams.std_info.frm_fmt) {
+ if (list_empty(&common->dma_queue))
+ continue;
+
+ /* Progressive mode */
+ if (!channel_first_int[i][channel_id]) {
+ /* Mark status of the cur_frm to
+ * done and unlock semaphore on it */
+ do_gettimeofday(&common->cur_frm->ts);
+ common->cur_frm->state = VIDEOBUF_DONE;
+ wake_up_interruptible(&common->cur_frm->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_get_std_info(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;
+ const struct vpif_channel_config_params *config;
+
+ int index;
+
+ std_info->stdid = vid_ch->stdid;
+ if (!std_info)
+ return -1;
+
+ for (index = 0; index < ARRAY_SIZE(ch_params); index++) {
+ config = &ch_params[index];
+ if (config->stdid & std_info->stdid) {
+ memcpy(std_info, config, sizeof(*config));
+ break;
+ }
+ }
+
+ if (index == ARRAY_SIZE(ch_params))
+ return -1;
+
+ 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 */
+ ch->common[VPIF_VIDEO_INDEX].height = std_info->height;
+ ch->common[VPIF_VIDEO_INDEX].width = std_info->width;
+
+ return 0;
+}
+
+/*
+ * vpif_calculate_offsets: This function calculates buffers offset for Y and C
+ * in the top and bottom field
+ */
+static void vpif_calculate_offsets(struct channel_obj *ch)
+{
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ struct vpif_params *vpifparams = &ch->vpifparams;
+ enum v4l2_field field = common->fmt.fmt.pix.field;
+ struct video_obj *vid_ch = &ch->video;
+ unsigned int hpitch, vpitch, sizeimage;
+
+ if (V4L2_FIELD_ANY == common->fmt.fmt.pix.field) {
+ if (ch->vpifparams.std_info.frm_fmt)
+ vid_ch->buf_field = V4L2_FIELD_NONE;
+ else
+ vid_ch->buf_field = V4L2_FIELD_INTERLACED;
+ } else {
+ vid_ch->buf_field = common->fmt.fmt.pix.field;
+ }
+
+ if (V4L2_MEMORY_USERPTR == common->memory)
+ sizeimage = common->fmt.fmt.pix.sizeimage;
+ else
+ sizeimage = config_params.channel_bufsize[ch->channel_id];
+
+ hpitch = common->fmt.fmt.pix.bytesperline;
+ vpitch = sizeimage / (hpitch * 2);
+ if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
+ (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
+ common->ytop_off = 0;
+ common->ybtm_off = hpitch;
+ common->ctop_off = sizeimage / 2;
+ common->cbtm_off = sizeimage / 2 + hpitch;
+ } else if (V4L2_FIELD_SEQ_TB == vid_ch->buf_field) {
+ common->ytop_off = 0;
+ common->ybtm_off = sizeimage / 4;
+ common->ctop_off = sizeimage / 2;
+ common->cbtm_off = common->ctop_off + sizeimage / 4;
+ } else if (V4L2_FIELD_SEQ_BT == vid_ch->buf_field) {
+ common->ybtm_off = 0;
+ common->ytop_off = sizeimage / 4;
+ common->cbtm_off = sizeimage / 2;
+ common->ctop_off = common->cbtm_off + sizeimage / 4;
+ }
+
+ if ((V4L2_FIELD_NONE == vid_ch->buf_field) ||
+ (V4L2_FIELD_INTERLACED == vid_ch->buf_field)) {
+ vpifparams->video_params.storage_mode = 1;
+ } else {
+ vpifparams->video_params.storage_mode = 0;
+ }
+
+ if (ch->vpifparams.std_info.frm_fmt == 1) {
+ vpifparams->video_params.hpitch =
+ common->fmt.fmt.pix.bytesperline;
+ } else {
+ if ((field == V4L2_FIELD_ANY) ||
+ (field == V4L2_FIELD_INTERLACED))
+ vpifparams->video_params.hpitch =
+ common->fmt.fmt.pix.bytesperline * 2;
+ else
+ vpifparams->video_params.hpitch =
+ common->fmt.fmt.pix.bytesperline;
+ }
+
+ ch->vpifparams.video_params.stdid = ch->vpifparams.std_info.stdid;
+}
+
+static void vpif_config_format(struct channel_obj *ch)
+{
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ 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];
+ common->fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
+ common->fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+}
+
+static int vpif_check_format(struct channel_obj *ch,
+ struct v4l2_pix_format *pixfmt)
+{
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ enum v4l2_field field = pixfmt->field;
+ u32 sizeimage, hpitch, vpitch;
+
+ if (pixfmt->pixelformat != V4L2_PIX_FMT_YUV422P)
+ goto invalid_fmt_exit;
+
+ if (!(VPIF_VALID_FIELD(field)))
+ goto invalid_fmt_exit;
+
+ if (pixfmt->bytesperline <= 0)
+ goto invalid_pitch_exit;
+
+ if (V4L2_MEMORY_USERPTR == common->memory)
+ sizeimage = pixfmt->sizeimage;
+ else
+ sizeimage = config_params.channel_bufsize[ch->channel_id];
+
+ if (vpif_get_std_info(ch)) {
+ vpif_err("Error getting the standard info\n");
+ return -EINVAL;
+ }
+
+ hpitch = pixfmt->bytesperline;
+ vpitch = sizeimage / (hpitch * 2);
+
+ /* Check for valid value of pitch */
+ if ((hpitch < ch->vpifparams.std_info.width) ||
+ (vpitch < ch->vpifparams.std_info.height))
+ goto invalid_pitch_exit;
+
+ /* Check for 8 byte alignment */
+ if (!ISALIGNED(hpitch)) {
+ vpif_err("invalid pitch alignment\n");
+ return -EINVAL;
+ }
+ pixfmt->width = common->fmt.fmt.pix.width;
+ pixfmt->height = common->fmt.fmt.pix.height;
+
+ return 0;
+
+invalid_fmt_exit:
+ vpif_err("invalid field format\n");
+ return -EINVAL;
+
+invalid_pitch_exit:
+ vpif_err("invalid pitch\n");
+ return -EINVAL;
+}
+
+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;
+ }
+}
+
+/*
+ * vpif_mmap: It is used to map kernel space buffers into user spaces
+ */
+static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+ struct vpif_fh *fh = filep->private_data;
+ struct common_obj *common = &fh->channel->common[VPIF_VIDEO_INDEX];
+
+ return videobuf_mmap_mapper(&common->buffer_queue, vma);
+}
+
+/*
+ * vpif_poll: It is used for select/poll system call
+ */
+static unsigned int vpif_poll(struct file *filep, poll_table *wait)
+{
+ struct vpif_fh *fh = filep->private_data;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (common->started)
+ return videobuf_poll_stream(filep, &common->buffer_queue, wait);
+
+ return 0;
+}
+
+/*
+ * vpif_open: It creates object of file handle structure and stores it in
+ * private_data member of filepointer
+ */
+static int vpif_open(struct file *filep)
+{
+ struct video_device *vdev = video_devdata(filep);
+ struct channel_obj *ch = NULL;
+ struct vpif_fh *fh = NULL;
+
+ ch = video_get_drvdata(vdev);
+ /* Allocate memory for the file handle object */
+ fh = kmalloc(sizeof(struct vpif_fh), GFP_KERNEL);
+ if (fh == NULL) {
+ vpif_err("unable to allocate memory for file handle object\n");
+ return -ENOMEM;
+ }
+
+ /* store pointer to fh in private_data member of filep */
+ filep->private_data = fh;
+ fh->channel = ch;
+ fh->initialized = 0;
+ if (!ch->initialized) {
+ fh->initialized = 1;
+ ch->initialized = 1;
+ memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
+ }
+
+ /* Increment channel usrs counter */
+ atomic_inc(&ch->usrs);
+ /* Set io_allowed[VPIF_VIDEO_INDEX] 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);
+
+ return 0;
+}
+
+/*
+ * vpif_release: 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 = &ch->common[VPIF_VIDEO_INDEX];
+
+ mutex_lock_interruptible(&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 */
+ if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
+ enable_channel2(0);
+ channel2_intr_enable(0);
+ }
+ if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
+ (2 == common->started)) {
+ enable_channel3(0);
+ channel3_intr_enable(0);
+ }
+ common->started = 0;
+ /* Free buffers allocated */
+ videobuf_queue_cancel(&common->buffer_queue);
+ videobuf_mmap_free(&common->buffer_queue);
+ common->numbuffers =
+ config_params.numbuffers[ch->channel_id];
+ }
+
+ mutex_unlock(&common->lock);
+
+ /* Decrement channel usrs counter */
+ atomic_dec(&ch->usrs);
+ /* If this file handle has initialize encoder device, reset it */
+ if (fh->initialized)
+ ch->initialized = 0;
+
+ /* Close the priority */
+ v4l2_prio_close(&ch->prio, &fh->prio);
+ filep->private_data = NULL;
+ fh->initialized = 0;
+ kfree(fh);
+
+ return 0;
+}
+
+/* functions implementing ioctls */
+
+static int vpif_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct vpif_config *config = vpif_dev->platform_data;
+
+ cap->version = VPIF_DISPLAY_VERSION_CODE;
+ cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+ strlcpy(cap->driver, "vpif display", sizeof(cap->driver));
+ strlcpy(cap->bus_info, "Platform", sizeof(cap->bus_info));
+ 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) {
+ vpif_err("Invalid format index\n");
+ 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;
+
+ return 0;
+}
+
+static int vpif_g_fmt_vid_out(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 */
+ mutex_lock_interruptible(&common->lock);
+ if (vpif_get_std_info(ch)) {
+ vpif_err("Error getting the standard info\n");
+ return -EINVAL;
+ }
+
+ *fmt = common->fmt;
+ mutex_unlock(&common->lock);
+ return 0;
+}
+
+static int vpif_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpif_fh *fh = priv;
+ struct v4l2_pix_format *pixfmt;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ int ret = 0;
+
+ if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
+ || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
+ if (!fh->initialized) {
+ vpif_dbg(1, debug, "Channel Busy\n");
+ return -EBUSY;
+ }
+
+ /* Check for the priority */
+ ret = v4l2_prio_check(&ch->prio, &fh->prio);
+ if (0 != ret)
+ return ret;
+ fh->initialized = 1;
+ }
+
+ if (common->started) {
+ vpif_dbg(1, debug, "Streaming in progress\n");
+ return -EBUSY;
+ }
+
+ pixfmt = &fmt->fmt.pix;
+ /* Check for valid field format */
+ ret = vpif_check_format(ch, pixfmt);
+ if (ret)
+ return ret;
+
+ /* store the pix format in the channel object */
+ common->fmt.fmt.pix = *pixfmt;
+ /* store the format in the channel object */
+ mutex_lock_interruptible(&common->lock);
+ common->fmt = *fmt;
+ mutex_unlock(&common->lock);
+
+ return 0;
+}
+
+static int vpif_try_fmt_vid_out(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 = &fmt->fmt.pix;
+ int ret = 0;
+
+ ret = vpif_check_format(ch, pixfmt);
+ if (ret) {
+ *pixfmt = common->fmt.fmt.pix;
+ pixfmt->sizeimage = pixfmt->width * pixfmt->height * 2;
+ }
+
+ return ret;
+}
+
+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;
+ enum v4l2_field field;
+ u8 index = 0;
+ int ret = 0;
+
+ /* This file handle has not initialized the channel,
+ It is not allowed to do settings */
+ if ((VPIF_CHANNEL2_VIDEO == ch->channel_id)
+ || (VPIF_CHANNEL3_VIDEO == ch->channel_id)) {
+ if (!fh->initialized) {
+ vpif_err("Channel Busy\n");
+ return -EBUSY;
+ }
+ }
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != reqbuf->type)
+ return -EINVAL;
+
+ index = VPIF_VIDEO_INDEX;
+
+ common = &ch->common[index];
+ mutex_lock_interruptible(&common->lock);
+ if (common->fmt.type != reqbuf->type) {
+ ret = -EINVAL;
+ goto reqbuf_exit;
+ }
+
+ if (0 != common->io_usrs) {
+ ret = -EBUSY;
+ goto reqbuf_exit;
+ }
+
+ if (reqbuf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ if (common->fmt.fmt.pix.field == V4L2_FIELD_ANY)
+ field = V4L2_FIELD_INTERLACED;
+ else
+ field = common->fmt.fmt.pix.field;
+ } else {
+ field = V4L2_VBI_INTERLACED;
+ }
+
+ /* Initialize videobuf queue as per the buffer type */
+ videobuf_queue_dma_contig_init(&common->buffer_queue,
+ &video_qops, NULL,
+ &common->irqlock,
+ reqbuf->type, field,
+ sizeof(struct videobuf_buffer), fh);
+
+ /* 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 */
+ ret = videobuf_reqbufs(&common->buffer_queue, reqbuf);
+
+reqbuf_exit:
+ mutex_unlock(&common->lock);
+ return ret;
+}
+
+static int vpif_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *tbuf)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ if (common->fmt.type != tbuf->type)
+ return -EINVAL;
+
+ return videobuf_querybuf(&common->buffer_queue, tbuf);
+}
+
+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;
+ struct videobuf_buffer *buf1;
+ unsigned long addr = 0;
+ unsigned long flags;
+ int ret = 0;
+
+ if (common->fmt.type != tbuf.type)
+ return -EINVAL;
+
+ if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
+ vpif_err("fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ if (!(list_empty(&common->dma_queue)) ||
+ (common->cur_frm != common->next_frm) ||
+ !(common->started) ||
+ (common->started && (0 == ch->field_id)))
+ return videobuf_qbuf(&common->buffer_queue, buf);
+
+ /* bufferqueue is empty store buffer address in VPIF registers */
+ mutex_lock(&common->buffer_queue.vb_lock);
+ buf1 = common->buffer_queue.bufs[tbuf.index];
+ if (buf1->memory != tbuf.memory) {
+ vpif_err("invalid buffer type\n");
+ goto qbuf_exit;
+ }
+
+ if ((buf1->state == VIDEOBUF_QUEUED) ||
+ (buf1->state == VIDEOBUF_ACTIVE)) {
+ vpif_err("invalid state\n");
+ goto qbuf_exit;
+ }
+
+ switch (buf1->memory) {
+ case V4L2_MEMORY_MMAP:
+ if (buf1->baddr == 0)
+ goto qbuf_exit;
+ break;
+
+ case V4L2_MEMORY_USERPTR:
+ if (tbuf.length < buf1->bsize)
+ goto qbuf_exit;
+
+ if ((VIDEOBUF_NEEDS_INIT != buf1->state)
+ && (buf1->baddr != tbuf.m.userptr))
+ vpif_buffer_release(&common->buffer_queue, buf1);
+ buf1->baddr = tbuf.m.userptr;
+ break;
+
+ default:
+ goto qbuf_exit;
+ }
+
+ local_irq_save(flags);
+ ret = vpif_buffer_prepare(&common->buffer_queue, buf1,
+ common->buffer_queue.field);
+ if (ret < 0) {
+ local_irq_restore(flags);
+ goto qbuf_exit;
+ }
+
+ buf1->state = VIDEOBUF_ACTIVE;
+ addr = buf1->boff;
+ common->next_frm = buf1;
+ if (tbuf.type != V4L2_BUF_TYPE_SLICED_VBI_OUTPUT) {
+ common->set_addr((addr + common->ytop_off),
+ (addr + common->ybtm_off),
+ (addr + common->ctop_off),
+ (addr + common->cbtm_off));
+ }
+
+ local_irq_restore(flags);
+ list_add_tail(&buf1->stream, &common->buffer_queue.stream);
+ mutex_unlock(&common->buffer_queue.vb_lock);
+ return 0;
+
+qbuf_exit:
+ mutex_unlock(&common->buffer_queue.vb_lock);
+ return -EINVAL;
+}
+
+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;
+
+ if (!(*std_id & DM646X_V4L2_STD))
+ return -EINVAL;
+
+ if (common->started) {
+ vpif_err("streaming in progress\n");
+ return -EBUSY;
+ }
+
+ /* Call encoder subdevice function to set the standard */
+ mutex_lock_interruptible(&common->lock);
+
+ ch->video.stdid = *std_id;
+ /* Get the information about the standard */
+ if (vpif_get_std_info(ch)) {
+ vpif_err("Error getting the standard info\n");
+ return -EINVAL;
+ }
+
+ if ((ch->vpifparams.std_info.width *
+ ch->vpifparams.std_info.height * 2) >
+ config_params.channel_bufsize[ch->channel_id]) {
+ vpif_err("invalid std for this size\n");
+ ret = -EINVAL;
+ goto s_std_exit;
+ }
+
+ common->fmt.fmt.pix.bytesperline = common->fmt.fmt.pix.width;
+ /* Configure the default format information */
+ vpif_config_format(ch);
+
+ 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");
+ goto s_std_exit;
+ }
+
+ ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, core,
+ s_std, *std_id);
+ if (ret < 0)
+ vpif_err("Failed to set standard for sub devices\n");
+
+s_std_exit:
+ mutex_unlock(&common->lock);
+ return ret;
+}
+
+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;
+
+ *std = ch->video.stdid;
+ return 0;
+}
+
+static int vpif_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+
+ return videobuf_dqbuf(&common->buffer_queue, p,
+ (file->f_flags & O_NONBLOCK));
+}
+
+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 = &ch->vpifparams;
+ struct vpif_config *vpif_config_data =
+ vpif_dev->platform_data;
+ unsigned long addr = 0;
+ int ret = 0;
+
+ if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ vpif_err("buffer type not supported\n");
+ return -EINVAL;
+ }
+
+ if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
+ vpif_err("fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ /* If Streaming is already started, return error */
+ if (common->started) {
+ vpif_err("channel->started\n");
+ return -EBUSY;
+ }
+
+ if ((ch->channel_id == VPIF_CHANNEL2_VIDEO
+ && oth_ch->common[VPIF_VIDEO_INDEX].started &&
+ ch->vpifparams.std_info.ycmux_mode == 0)
+ || ((ch->channel_id == VPIF_CHANNEL3_VIDEO)
+ && (2 == oth_ch->common[VPIF_VIDEO_INDEX].started))) {
+ vpif_err("other channel is using\n");
+ return -EBUSY;
+ }
+
+ ret = vpif_check_format(ch, &common->fmt.fmt.pix);
+ if (ret < 0)
+ return ret;
+
+ /* Call videobuf_streamon to start streaming in videobuf */
+ ret = videobuf_streamon(&common->buffer_queue);
+ if (ret < 0) {
+ vpif_err("videobuf_streamon\n");
+ return ret;
+ }
+
+ mutex_lock_interruptible(&common->lock);
+ /* If buffer queue is empty, return error */
+ if (list_empty(&common->dma_queue)) {
+ vpif_err("buffer queue is empty\n");
+ ret = -EIO;
+ goto streamon_exit;
+ }
+
+ /* Get the next frame from the buffer queue */
+ common->next_frm = common->cur_frm =
+ list_entry(common->dma_queue.next,
+ struct videobuf_buffer, queue);
+
+ list_del(&common->cur_frm->queue);
+ /* Mark state of the current frame to active */
+ common->cur_frm->state = VIDEOBUF_ACTIVE;
+
+ /* Initialize field_id and started member */
+ ch->field_id = 0;
+ common->started = 1;
+ if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ addr = common->cur_frm->boff;
+ /* Calculate the offset for Y and C data in the buffer */
+ vpif_calculate_offsets(ch);
+
+ if ((ch->vpifparams.std_info.frm_fmt &&
+ ((common->fmt.fmt.pix.field != V4L2_FIELD_NONE)
+ && (common->fmt.fmt.pix.field != V4L2_FIELD_ANY)))
+ || (!ch->vpifparams.std_info.frm_fmt
+ && (common->fmt.fmt.pix.field == V4L2_FIELD_NONE))) {
+ vpif_err("conflict in field format and std format\n");
+ ret = -EINVAL;
+ goto streamon_exit;
+ }
+
+ /* clock settings */
+ 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 streamon_exit;
+ }
+
+ /* set the parameters and addresses */
+ ret = vpif_set_video_params(vpif, ch->channel_id + 2);
+ if (ret < 0)
+ goto streamon_exit;
+
+ 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_CHANNEL2_VIDEO == ch->channel_id) {
+ channel2_intr_assert();
+ channel2_intr_enable(1);
+ enable_channel2(1);
+ }
+
+ if ((VPIF_CHANNEL3_VIDEO == ch->channel_id)
+ || (common->started == 2)) {
+ channel3_intr_assert();
+ channel3_intr_enable(1);
+ enable_channel3(1);
+ }
+ channel_first_int[VPIF_VIDEO_INDEX][ch->channel_id] = 1;
+ }
+
+streamon_exit:
+ mutex_unlock(&common->lock);
+ return ret;
+}
+
+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];
+
+ if (buftype != V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ vpif_err("buffer type not supported\n");
+ return -EINVAL;
+ }
+
+ if (!fh->io_allowed[VPIF_VIDEO_INDEX]) {
+ vpif_err("fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ if (!common->started) {
+ vpif_err("channel->started\n");
+ return -EINVAL;
+ }
+
+ mutex_lock_interruptible(&common->lock);
+ if (buftype == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ /* disable channel */
+ if (VPIF_CHANNEL2_VIDEO == ch->channel_id) {
+ enable_channel2(0);
+ channel2_intr_enable(0);
+ }
+ if ((VPIF_CHANNEL3_VIDEO == ch->channel_id) ||
+ (2 == common->started)) {
+ enable_channel3(0);
+ channel3_intr_enable(0);
+ }
+ }
+
+ common->started = 0;
+ mutex_unlock(&common->lock);
+
+ return videobuf_streamoff(&common->buffer_queue);
+}
+
+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_OUTPUT != crop->type)
+ return -EINVAL;
+
+ crop->bounds.left = crop->bounds.top = 0;
+ crop->defrect.left = crop->defrect.top = 0;
+ crop->defrect.height = crop->bounds.height = common->height;
+ crop->defrect.width = crop->bounds.width = common->width;
+
+ return 0;
+}
+
+static int vpif_enum_output(struct file *file, void *fh,
+ struct v4l2_output *output)
+{
+
+ struct vpif_config *config = vpif_dev->platform_data;
+
+ if (output->index >= config->output_count) {
+ vpif_dbg(1, debug, "Invalid output index\n");
+ return -EINVAL;
+ }
+
+ strcpy(output->name, config->output[output->index]);
+ output->type = V4L2_OUTPUT_TYPE_ANALOG;
+ output->std = DM646X_V4L2_STD;
+
+ return 0;
+}
+
+static int vpif_s_output(struct file *file, void *priv, unsigned int i)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+ struct video_obj *vid_ch = &ch->video;
+ struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
+ int ret = 0;
+
+ mutex_lock_interruptible(&common->lock);
+ if (common->started) {
+ vpif_err("Streaming in progress\n");
+ ret = -EBUSY;
+ goto s_output_exit;
+ }
+
+ ret = v4l2_device_call_until_err(&vpif_obj.v4l2_dev, 1, video,
+ s_routing, 0, i, 0);
+
+ if (ret < 0)
+ vpif_err("Failed to set output standard\n");
+
+ vid_ch->output_id = i;
+
+s_output_exit:
+ mutex_unlock(&common->lock);
+ return ret;
+}
+
+static int vpif_g_output(struct file *file, void *priv, unsigned int *i)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+ struct video_obj *vid_ch = &ch->video;
+
+ *i = vid_ch->output_id;
+
+ return 0;
+}
+
+static int vpif_g_priority(struct file *file, void *priv, enum v4l2_priority *p)
+{
+ struct vpif_fh *fh = priv;
+ struct channel_obj *ch = fh->channel;
+
+ *p = v4l2_prio_max(&ch->prio);
+
+ return 0;
+}
+
+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 display 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_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 = vpif_reqbufs,
+ .vidioc_querybuf = vpif_querybuf,
+ .vidioc_qbuf = vpif_qbuf,
+ .vidioc_dqbuf = vpif_dqbuf,
+ .vidioc_streamon = vpif_streamon,
+ .vidioc_streamoff = vpif_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_cropcap = vpif_cropcap,
+};
+
+static const struct v4l2_file_operations vpif_fops = {
+ .owner = THIS_MODULE,
+ .open = vpif_open,
+ .release = vpif_release,
+ .ioctl = video_ioctl2,
+ .mmap = vpif_mmap,
+ .poll = vpif_poll
+};
+
+static struct video_device vpif_video_template = {
+ .name = "vpif",
+ .fops = &vpif_fops,
+ .minor = -1,
+ .ioctl_ops = &vpif_ioctl_ops,
+ .tvnorms = DM646X_V4L2_STD,
+ .current_norm = V4L2_STD_625_50,
+
+};
+
+/*Configure the channels, buffer sizei, request irq */
+static int initialize_vpif(void)
+{
+ int free_channel_objects_index;
+ int free_buffer_channel_index;
+ int free_buffer_index;
+ int err = 0, i, j;
+
+ /* Default number of buffers should be 3 */
+ if ((ch2_numbuffers > 0) &&
+ (ch2_numbuffers < config_params.min_numbuffers))
+ ch2_numbuffers = config_params.min_numbuffers;
+ if ((ch3_numbuffers > 0) &&
+ (ch3_numbuffers < config_params.min_numbuffers))
+ ch3_numbuffers = config_params.min_numbuffers;
+
+ /* Set buffer size to min buffers size if invalid buffer size is
+ * given */
+ if (ch2_bufsize < config_params.min_bufsize[VPIF_CHANNEL2_VIDEO])
+ ch2_bufsize =
+ config_params.min_bufsize[VPIF_CHANNEL2_VIDEO];
+ if (ch3_bufsize < config_params.min_bufsize[VPIF_CHANNEL3_VIDEO])
+ ch3_bufsize =
+ config_params.min_bufsize[VPIF_CHANNEL3_VIDEO];
+
+ config_params.numbuffers[VPIF_CHANNEL2_VIDEO] = ch2_numbuffers;
+
+ if (ch2_numbuffers) {
+ config_params.channel_bufsize[VPIF_CHANNEL2_VIDEO] =
+ ch2_bufsize;
+ }
+ config_params.numbuffers[VPIF_CHANNEL3_VIDEO] = ch3_numbuffers;
+
+ if (ch3_numbuffers) {
+ config_params.channel_bufsize[VPIF_CHANNEL3_VIDEO] =
+ ch3_bufsize;
+ }
+
+ /* Allocate memory for six channel objects */
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+ vpif_obj.dev[i] =
+ kmalloc(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;
+ }
+ }
+
+ free_channel_objects_index = VPIF_DISPLAY_MAX_DEVICES;
+ free_buffer_channel_index = VPIF_DISPLAY_NUM_CHANNELS;
+ free_buffer_index = config_params.numbuffers[i - 1];
+
+ 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 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)
+{
+ const struct subdev_info *subdevdata;
+ int i, j = 0, k, q, m, err = 0;
+ struct i2c_adapter *i2c_adap;
+ struct vpif_config *config;
+ struct common_obj *common;
+ struct channel_obj *ch;
+ struct video_device *vfd;
+ struct resource *res;
+ int subdev_count;
+
+ vpif_dev = &pdev->dev;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ v4l2_err(vpif_dev->driver,
+ "Error getting platform resource\n");
+ return -ENOENT;
+ }
+
+ if (!request_mem_region(res->start, res->end - res->start + 1,
+ vpif_dev->driver->name)) {
+ v4l2_err(vpif_dev->driver, "VPIF: failed request_mem_region\n");
+ return -ENXIO;
+ }
+
+ vpif_base = ioremap_nocache(res->start, res->end - res->start + 1);
+ if (!vpif_base) {
+ v4l2_err(vpif_dev->driver, "Unable to ioremap VPIF reg\n");
+ err = -ENXIO;
+ goto resource_exit;
+ }
+
+ vpif_base_addr_init(vpif_base);
+
+ initialize_vpif();
+
+ 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_DISABLED,
+ "DM646x_Display",
+ (void *)(&vpif_obj.dev[k]->channel_id))) {
+ err = -EBUSY;
+ goto vpif_int_err;
+ }
+ }
+ k++;
+ }
+
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+
+ /* Get the pointer to the channel object */
+ ch = vpif_obj.dev[i];
+
+ /* Allocate memory for video device */
+ vfd = video_device_alloc();
+ if (vfd == NULL) {
+ for (j = 0; j < i; j++) {
+ ch = vpif_obj.dev[j];
+ video_device_release(ch->video_dev);
+ }
+ err = -ENOMEM;
+ goto video_dev_alloc_exit;
+ }
+
+ /* 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),
+ "DM646x_VPIFDisplay_DRIVER_V%d.%d.%d",
+ (VPIF_DISPLAY_VERSION_CODE >> 16) & 0xff,
+ (VPIF_DISPLAY_VERSION_CODE >> 8) & 0xff,
+ (VPIF_DISPLAY_VERSION_CODE) & 0xff);
+
+ /* Set video_dev to the video device */
+ ch->video_dev = vfd;
+ }
+
+ for (j = 0; j < VPIF_DISPLAY_MAX_DEVICES; j++) {
+ ch = vpif_obj.dev[j];
+ /* Initialize field of the channel objects */
+ atomic_set(&ch->usrs, 0);
+ for (k = 0; k < VPIF_NUMOBJECTS; k++) {
+ ch->common[k].numbuffers = 0;
+ common = &ch->common[k];
+ common->io_usrs = 0;
+ common->started = 0;
+ spin_lock_init(&common->irqlock);
+ mutex_init(&common->lock);
+ common->numbuffers = 0;
+ common->set_addr = NULL;
+ common->ytop_off = common->ybtm_off = 0;
+ common->ctop_off = common->cbtm_off = 0;
+ common->cur_frm = common->next_frm = NULL;
+ memset(&common->fmt, 0, sizeof(common->fmt));
+ common->numbuffers = config_params.numbuffers[k];
+
+ }
+ ch->initialized = 0;
+ ch->channel_id = j;
+ if (j < 2)
+ ch->common[VPIF_VIDEO_INDEX].numbuffers =
+ config_params.numbuffers[ch->channel_id];
+ else
+ ch->common[VPIF_VIDEO_INDEX].numbuffers = 0;
+
+ memset(&ch->vpifparams, 0, sizeof(ch->vpifparams));
+
+ /* Initialize prio member of channel object */
+ v4l2_prio_init(&ch->prio);
+ ch->common[VPIF_VIDEO_INDEX].fmt.type =
+ V4L2_BUF_TYPE_VIDEO_OUTPUT;
+
+ /* register video device */
+ vpif_dbg(1, debug, "channel=%x,channel->video_dev=%x\n",
+ (int)ch, (int)&ch->video_dev);
+
+ err = video_register_device(ch->video_dev,
+ VFL_TYPE_GRABBER, (j ? 3 : 2));
+ if (err < 0)
+ 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;
+ subdevdata = config->subdevinfo;
+ vpif_obj.sd = kmalloc(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++) {
+ vpif_obj.sd[i] = v4l2_i2c_new_probed_subdev(&vpif_obj.v4l2_dev,
+ i2c_adap, subdevdata[i].name,
+ subdevdata[i].name,
+ &subdevdata[i].addr);
+ if (!vpif_obj.sd[i]) {
+ vpif_err("Error registering v4l2 subdevice\n");
+ goto probe_subdev_out;
+ }
+
+ if (vpif_obj.sd[i])
+ vpif_obj.sd[i]->grp_id = 1 << i;
+ }
+
+ return 0;
+
+probe_subdev_out:
+ kfree(vpif_obj.sd);
+probe_out:
+ for (k = 0; k < j; k++) {
+ ch = vpif_obj.dev[k];
+ video_unregister_device(ch->video_dev);
+ video_device_release(ch->video_dev);
+ ch->video_dev = NULL;
+ }
+vpif_int_err:
+ v4l2_device_unregister(&vpif_obj.v4l2_dev);
+ vpif_err("VPIF IRQ request failed\n");
+ for (q = k; k >= 0; k--) {
+ for (m = i; m >= res->start; m--)
+ free_irq(m, (void *)(&vpif_obj.dev[k]->channel_id));
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, k-1);
+ m = res->end;
+ }
+video_dev_alloc_exit:
+ iounmap(vpif_base);
+resource_exit:
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, res->end - res->start + 1);
+
+ return err;
+}
+
+/*
+ * vpif_remove: It un-register channels from V4L2 driver
+ */
+static int vpif_remove(struct platform_device *device)
+{
+ struct channel_obj *ch;
+ int i;
+
+ v4l2_device_unregister(&vpif_obj.v4l2_dev);
+
+ /* un-register device */
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the channel object */
+ ch = vpif_obj.dev[i];
+ /* Unregister video device */
+ video_unregister_device(ch->video_dev);
+
+ ch->video_dev = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver vpif_driver = {
+ .driver = {
+ .name = "vpif_display",
+ .owner = THIS_MODULE,
+ },
+ .probe = vpif_probe,
+ .remove = vpif_remove,
+};
+
+static __init int vpif_init(void)
+{
+ return platform_driver_register(&vpif_driver);
+}
+
+/*
+ * vpif_cleanup: This function 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++;
+ }
+
+ iounmap(vpif_base);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, res->end - res->start + 1);
+ platform_driver_unregister(&vpif_driver);
+ kfree(vpif_obj.sd);
+ for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++)
+ kfree(vpif_obj.dev[i]);
+}
+
+module_init(vpif_init);
+module_exit(vpif_cleanup);
git.openpandora.org / pandora-kernel.git / commitdiff