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+/*
+ * Copyright (C) 2010 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 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/interrupt.h>
+#include <linux/string.h>
+#include <linux/wait.h>
+#include <linux/time.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/mm.h>
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+
+#include <asm/pgtable.h>
+#include <mach/cputype.h>
+
+#include <media/v4l2-dev.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/davinci/vpbe_display.h>
+#include <media/davinci/vpbe_types.h>
+#include <media/davinci/vpbe.h>
+#include <media/davinci/vpbe_venc.h>
+#include <media/davinci/vpbe_osd.h>
+#include "vpbe_venc_regs.h"
+
+#define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
+
+static int debug;
+static u32 video2_numbuffers = 3;
+static u32 video3_numbuffers = 3;
+
+#define VPBE_DISPLAY_SD_BUF_SIZE (720*576*2)
+#define VPBE_DEFAULT_NUM_BUFS 3
+
+static u32 video2_bufsize = VPBE_DISPLAY_SD_BUF_SIZE;
+static u32 video3_bufsize = VPBE_DISPLAY_SD_BUF_SIZE;
+
+module_param(video2_numbuffers, uint, S_IRUGO);
+module_param(video3_numbuffers, uint, S_IRUGO);
+module_param(video2_bufsize, uint, S_IRUGO);
+module_param(video3_bufsize, uint, S_IRUGO);
+module_param(debug, int, 0644);
+
+static struct buf_config_params display_buf_config_params = {
+ .min_numbuffers = VPBE_DEFAULT_NUM_BUFS,
+ .numbuffers[0] = VPBE_DEFAULT_NUM_BUFS,
+ .numbuffers[1] = VPBE_DEFAULT_NUM_BUFS,
+ .min_bufsize[0] = VPBE_DISPLAY_SD_BUF_SIZE,
+ .min_bufsize[1] = VPBE_DISPLAY_SD_BUF_SIZE,
+ .layer_bufsize[0] = VPBE_DISPLAY_SD_BUF_SIZE,
+ .layer_bufsize[1] = VPBE_DISPLAY_SD_BUF_SIZE,
+};
+
+static struct vpbe_device *vpbe_dev;
+static struct osd_state *osd_device;
+static int vpbe_display_nr[] = { 2, 3 };
+
+static struct v4l2_capability vpbe_display_videocap = {
+ .driver = VPBE_DISPLAY_DRIVER,
+ .bus_info = "platform",
+ .version = VPBE_DISPLAY_VERSION_CODE,
+ .capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING,
+};
+
+static u8 layer_first_int[VPBE_DISPLAY_MAX_DEVICES];
+
+static int venc_is_second_field()
+{
+ int ret = 0;
+ int val;
+ ret = v4l2_subdev_call(vpbe_dev->venc,
+ core,
+ ioctl,
+ VENC_GET_FLD,
+ &val);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in getting Field ID 0\n");
+ }
+ return val;
+}
+
+/*
+ * vpbe_display_isr()
+ * ISR function. It changes status of the displayed buffer, takes next buffer
+ * from the queue and sets its address in VPBE registers
+ */
+static void vpbe_display_isr(unsigned int event, void *disp_obj)
+{
+ unsigned long jiffies_time = get_jiffies_64();
+ struct timeval timevalue;
+ int i, fid;
+ unsigned long addr = 0;
+ struct vpbe_display_obj *layer = NULL;
+ struct vpbe_display *disp_dev = (struct vpbe_display *)disp_obj;
+
+ /* Convert time represention from jiffies to timeval */
+ jiffies_to_timeval(jiffies_time, &timevalue);
+
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ layer = disp_dev->dev[i];
+ /* If streaming is started in this layer */
+ if (!layer->started)
+ continue;
+ /* Check the field format */
+ if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
+ (event & OSD_END_OF_FRAME)) {
+ /* Progressive mode */
+ if (layer_first_int[i])
+ layer_first_int[i] = 0;
+ continue;
+ /*
+ * Mark status of the cur_frm to
+ * done and unlock semaphore on it
+ */
+
+ if (layer->cur_frm != layer->next_frm) {
+ layer->cur_frm->ts = timevalue;
+ layer->cur_frm->state = VIDEOBUF_DONE;
+ wake_up_interruptible(
+ &layer->cur_frm->done);
+ /* Make cur_frm pointing to next_frm */
+ layer->cur_frm = layer->next_frm;
+ }
+ /* Get the next buffer from buffer queue */
+ spin_lock(&disp_dev->dma_queue_lock);
+ if (!list_empty(&layer->dma_queue)) {
+ layer->next_frm =
+ list_entry(layer->dma_queue.next,
+ struct videobuf_buffer, queue);
+ /* Remove that buffer from the buffer queue */
+ list_del(&layer->next_frm->queue);
+ /* Mark status of the buffer as active */
+ layer->next_frm->state = VIDEOBUF_ACTIVE;
+
+ addr = videobuf_to_dma_contig(layer->next_frm);
+ osd_device->ops.start_layer(osd_device,
+ layer->layer_info.id,
+ addr, disp_dev->cbcr_ofst);
+ }
+ spin_unlock(&disp_dev->dma_queue_lock);
+ } else {
+ /*
+ * Interlaced mode
+ * If it is first interrupt, ignore it
+ */
+ if (layer_first_int[i]) {
+ layer_first_int[i] = 0;
+ return;
+ }
+
+ layer->field_id ^= 1;
+ if (event & OSD_FIRST_FIELD)
+ fid = 0;
+ else if (event & OSD_SECOND_FIELD)
+ fid = 1;
+ else
+ return;
+
+ /*
+ * If field id does not match with stored
+ * field id
+ */
+ if (fid != layer->field_id) {
+ /* Make them in sync */
+ if (0 == fid)
+ layer->field_id = fid;
+
+ return;
+ }
+ /*
+ * device field id and local field id are
+ * in sync. If this is even field
+ */
+ if (0 == fid) {
+ if (layer->cur_frm == layer->next_frm)
+ continue;
+ /*
+ * one frame is displayed If next frame is
+ * available, release cur_frm and move on
+ * copy frame display time
+ */
+ layer->cur_frm->ts = timevalue;
+ /* Change status of the cur_frm */
+ layer->cur_frm->state = VIDEOBUF_DONE;
+ /* unlock semaphore on cur_frm */
+ wake_up_interruptible(&layer->cur_frm->done);
+ /* Make cur_frm pointing to next_frm */
+ layer->cur_frm = layer->next_frm;
+ } else if (1 == fid) { /* odd field */
+
+ if (list_empty(&layer->dma_queue)
+ || (layer->cur_frm != layer->next_frm))
+ continue;
+
+ /*
+ * one field is displayed configure
+ * the next frame if it is available
+ * otherwise hold on current frame
+ * Get next from the buffer queue
+ */
+ spin_lock(&disp_dev->dma_queue_lock);
+ layer->next_frm = list_entry(
+ layer->dma_queue.next,
+ struct videobuf_buffer,
+ queue);
+
+ /* Remove that from the buffer queue */
+ list_del(&layer->next_frm->queue);
+
+ /* Mark state of the frame to active */
+ layer->next_frm->state = VIDEOBUF_ACTIVE;
+ addr = videobuf_to_dma_contig(layer->next_frm);
+ osd_device->ops.start_layer(osd_device,
+ layer->layer_info.id,
+ addr,
+ disp_dev->cbcr_ofst);
+ spin_unlock(&disp_dev->dma_queue_lock);
+ }
+ }
+ }
+}
+
+/* interrupt service routine */
+static irqreturn_t venc_isr(int irq, void *arg)
+{
+ static unsigned last_event;
+ unsigned event = 0;
+
+ if (venc_is_second_field())
+ event |= VENC_SECOND_FIELD;
+ else
+ event |= VENC_FIRST_FIELD;
+
+ if (event == (last_event & ~VENC_END_OF_FRAME)) {
+ /*
+ * If the display is non-interlaced, then we need to flag the
+ * end-of-frame event at every interrupt regardless of the
+ * value of the FIDST bit. We can conclude that the display is
+ * non-interlaced if the value of the FIDST bit is unchanged
+ * from the previous interrupt.
+ */
+ event |= VENC_END_OF_FRAME;
+ } else if (event == VENC_SECOND_FIELD) {
+ /* end-of-frame for interlaced display */
+ event |= VENC_END_OF_FRAME;
+ }
+ last_event = event;
+
+ vpbe_display_isr(event, arg);
+ return IRQ_HANDLED;
+}
+
+/*
+ * vpbe_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 vpbe_buffer_prepare(struct videobuf_queue *q,
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct vpbe_fh *fh = q->priv_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ unsigned long addr;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "vpbe_buffer_prepare\n");
+
+ /* If buffer is not initialized, initialize it */
+ if (VIDEOBUF_NEEDS_INIT == vb->state) {
+ vb->width = layer->pix_fmt.width;
+ vb->height = layer->pix_fmt.height;
+ vb->size = layer->pix_fmt.sizeimage;
+ vb->field = field;
+
+ ret = videobuf_iolock(q, vb, NULL);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Failed to map \
+ user address\n");
+ return -EINVAL;
+ }
+
+ addr = videobuf_to_dma_contig(vb);
+
+ if (q->streaming) {
+ if (!IS_ALIGNED(addr, 8)) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "buffer_prepare:offset is \
+ not aligned to 32 bytes\n");
+ return -EINVAL;
+ }
+ }
+ vb->state = VIDEOBUF_PREPARED;
+ }
+ return 0;
+}
+
+/*
+ * vpbe_buffer_setup()
+ * This function allocates memory for the buffers
+ */
+static int vpbe_buffer_setup(struct videobuf_queue *q,
+ unsigned int *count,
+ unsigned int *size)
+{
+ /* Get the file handle object and layer object */
+ struct vpbe_fh *fh = q->priv_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ int buf_size;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
+
+ *size = layer->pix_fmt.sizeimage;
+ buf_size =
+ display_buf_config_params.layer_bufsize[layer->device_id];
+ /*
+ * For MMAP, limit the memory allocation as per bootarg
+ * configured buffer size
+ */
+ if (V4L2_MEMORY_MMAP == layer->memory)
+ if (*size > buf_size)
+ *size = buf_size;
+
+ /* Store number of buffers allocated in numbuffer member */
+ if (*count < display_buf_config_params.min_numbuffers)
+ *count = layer->numbuffers =
+ display_buf_config_params.numbuffers[layer->device_id];
+
+ return 0;
+}
+
+/*
+ * vpbe_buffer_queue()
+ * This function adds the buffer to DMA queue
+ */
+static void vpbe_buffer_queue(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ /* Get the file handle object and layer object */
+ struct vpbe_fh *fh = q->priv_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ struct vpbe_display *disp = fh->disp_dev;
+ unsigned long flags;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "vpbe_buffer_queue\n");
+
+ /* add the buffer to the DMA queue */
+ spin_lock_irqsave(&disp->dma_queue_lock, flags);
+ list_add_tail(&vb->queue, &layer->dma_queue);
+ spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
+ /* Change state of the buffer */
+ vb->state = VIDEOBUF_QUEUED;
+}
+
+/*
+ * vpbe_buffer_release()
+ * This function is called from the videobuf layer to free memory allocated to
+ * the buffers
+ */
+static void vpbe_buffer_release(struct videobuf_queue *q,
+ struct videobuf_buffer *vb)
+{
+ /* Get the file handle object and layer object */
+ struct vpbe_fh *fh = q->priv_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "vpbe_buffer_release\n");
+
+ if (V4L2_MEMORY_USERPTR != layer->memory)
+ videobuf_dma_contig_free(q, vb);
+
+ vb->state = VIDEOBUF_NEEDS_INIT;
+}
+
+static struct videobuf_queue_ops video_qops = {
+ .buf_setup = vpbe_buffer_setup,
+ .buf_prepare = vpbe_buffer_prepare,
+ .buf_queue = vpbe_buffer_queue,
+ .buf_release = vpbe_buffer_release,
+};
+
+static
+struct vpbe_display_obj*
+_vpbe_display_get_other_win(struct vpbe_display *disp_dev,
+ struct vpbe_display_obj *layer)
+{
+ enum vpbe_display_device_id thiswin, otherwin;
+ thiswin = layer->device_id;
+
+ otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
+ VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
+ return disp_dev->dev[otherwin];
+}
+
+static int vpbe_set_video_display_params(struct vpbe_display *disp_dev,
+ struct vpbe_display_obj *layer)
+{
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ unsigned long addr;
+ int ret = 0;
+
+ addr = videobuf_to_dma_contig(layer->cur_frm);
+ /* Set address in the display registers */
+ osd_device->ops.start_layer(osd_device,
+ layer->layer_info.id,
+ addr,
+ disp_dev->cbcr_ofst);
+
+ ret = osd_device->ops.enable_layer(osd_device,
+ layer->layer_info.id, 0);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in enabling osd window layer 0\n");
+ return -1;
+ }
+
+ /* Enable the window */
+ layer->layer_info.enable = 1;
+ if (cfg->pixfmt == PIXFMT_NV12) {
+ struct vpbe_display_obj *otherlayer =
+ _vpbe_display_get_other_win(disp_dev, layer);
+
+ ret = osd_device->ops.enable_layer(osd_device,
+ otherlayer->layer_info.id, 1);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in enabling osd window layer 1\n");
+ return -1;
+ }
+ otherlayer->layer_info.enable = 1;
+ }
+ return 0;
+}
+
+static void
+vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
+ struct vpbe_display_obj *layer,
+ int expected_xsize, int expected_ysize)
+{
+ struct display_layer_info *layer_info = &layer->layer_info;
+ struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ int h_scale = 0, v_scale = 0, h_exp = 0, v_exp = 0, temp;
+ v4l2_std_id standard_id = vpbe_dev->current_timings.timings.std_id;
+
+ /*
+ * Application initially set the image format. Current display
+ * size is obtained from the vpbe display controller. expected_xsize
+ * and expected_ysize are set through S_CROP ioctl. Based on this,
+ * driver will calculate the scale factors for vertical and
+ * horizontal direction so that the image is displayed scaled
+ * and expanded. Application uses expansion to display the image
+ * in a square pixel. Otherwise it is displayed using displays
+ * pixel aspect ratio.It is expected that application chooses
+ * the crop coordinates for cropped or scaled display. if crop
+ * size is less than the image size, it is displayed cropped or
+ * it is displayed scaled and/or expanded.
+ *
+ * to begin with, set the crop window same as expected. Later we
+ * will override with scaled window size
+ */
+
+ cfg->xsize = pixfmt->width;
+ cfg->ysize = pixfmt->height;
+ layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
+ layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
+ layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
+ layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
+
+ if (pixfmt->width < expected_xsize) {
+ h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
+ if (h_scale < 2)
+ h_scale = 1;
+ else if (h_scale >= 4)
+ h_scale = 4;
+ else
+ h_scale = 2;
+ cfg->xsize *= h_scale;
+ if (cfg->xsize < expected_xsize) {
+ if ((standard_id & V4L2_STD_525_60) ||
+ (standard_id & V4L2_STD_625_50)) {
+ temp = (cfg->xsize *
+ VPBE_DISPLAY_H_EXP_RATIO_N) /
+ VPBE_DISPLAY_H_EXP_RATIO_D;
+ if (temp <= expected_xsize) {
+ h_exp = 1;
+ cfg->xsize = temp;
+ }
+ }
+ }
+ if (h_scale == 2)
+ layer_info->h_zoom = ZOOM_X2;
+ else if (h_scale == 4)
+ layer_info->h_zoom = ZOOM_X4;
+ if (h_exp)
+ layer_info->h_exp = H_EXP_9_OVER_8;
+ } else {
+ /* no scaling, only cropping. Set display area to crop area */
+ cfg->xsize = expected_xsize;
+ }
+
+ if (pixfmt->height < expected_ysize) {
+ v_scale = expected_ysize / pixfmt->height;
+ if (v_scale < 2)
+ v_scale = 1;
+ else if (v_scale >= 4)
+ v_scale = 4;
+ else
+ v_scale = 2;
+ cfg->ysize *= v_scale;
+ if (cfg->ysize < expected_ysize) {
+ if ((standard_id & V4L2_STD_625_50)) {
+ temp = (cfg->ysize *
+ VPBE_DISPLAY_V_EXP_RATIO_N) /
+ VPBE_DISPLAY_V_EXP_RATIO_D;
+ if (temp <= expected_ysize) {
+ v_exp = 1;
+ cfg->ysize = temp;
+ }
+ }
+ }
+ if (v_scale == 2)
+ layer_info->v_zoom = ZOOM_X2;
+ else if (v_scale == 4)
+ layer_info->v_zoom = ZOOM_X4;
+ if (v_exp)
+ layer_info->h_exp = V_EXP_6_OVER_5;
+ } else {
+ /* no scaling, only cropping. Set display area to crop area */
+ cfg->ysize = expected_ysize;
+ }
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "crop display xsize = %d, ysize = %d\n",
+ cfg->xsize, cfg->ysize);
+}
+
+static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
+ struct vpbe_display_obj *layer,
+ int top, int left)
+{
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+
+ cfg->xpos = cfg->ypos = 0;
+ if (left + cfg->xsize <= vpbe_dev->current_timings.xres)
+ cfg->xpos = left;
+ if (top + cfg->ysize <= vpbe_dev->current_timings.yres)
+ cfg->ypos = top;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "new xpos = %d, ypos = %d\n",
+ cfg->xpos, cfg->ypos);
+}
+
+static int vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
+ struct v4l2_rect *c)
+{
+ if ((c->width == 0) ||
+ ((c->width + c->left) > vpbe_dev->current_timings.xres) ||
+ (c->height == 0) || ((c->height + c->top) >
+ vpbe_dev->current_timings.yres)) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid crop values\n");
+ return -1;
+ }
+ if ((c->height & 0x1) && (vpbe_dev->current_timings.interlaced)) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "window height must be even for interlaced display\n");
+ return -1;
+ }
+ return 0;
+}
+
+/**
+ * vpbe_try_format()
+ * If user application provides width and height, and have bytesperline set
+ * to zero, driver calculates bytesperline and sizeimage based on hardware
+ * limits. If application likes to add pads at the end of each line and
+ * end of the buffer , it can set bytesperline to line size and sizeimage to
+ * bytesperline * height of the buffer. If driver fills zero for active
+ * video width and height, and has requested user bytesperline and sizeimage,
+ * width and height is adjusted to maximum display limit or buffer width
+ * height which ever is lower
+ */
+static int vpbe_try_format(struct vpbe_display *disp_dev,
+ struct v4l2_pix_format *pixfmt, int check)
+{
+ int min_sizeimage, bpp, min_height = 1, min_width = 32,
+ max_width, max_height, user_info = 0;
+
+ if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
+ (pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
+ /* choose default as V4L2_PIX_FMT_UYVY */
+ pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
+
+ /* Check the field format */
+ if (pixfmt->field == V4L2_FIELD_ANY) {
+ if (vpbe_dev->current_timings.interlaced)
+ pixfmt->field = V4L2_FIELD_INTERLACED;
+ else
+ pixfmt->field = V4L2_FIELD_NONE;
+ }
+
+ if (pixfmt->field == V4L2_FIELD_INTERLACED)
+ min_height = 2;
+
+ if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
+ bpp = 1;
+ else
+ bpp = 2;
+
+ max_width = vpbe_dev->current_timings.xres;
+ max_height = vpbe_dev->current_timings.yres;
+
+ min_width /= bpp;
+
+ if (!pixfmt->width && !pixfmt->bytesperline) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "bytesperline and width"
+ " cannot be zero\n");
+ return -EINVAL;
+ }
+
+ /* if user provided bytesperline, it must provide sizeimage as well */
+ if (pixfmt->bytesperline && !pixfmt->sizeimage) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "sizeimage must be non zero, when user"
+ " provides bytesperline\n");
+ return -EINVAL;
+ }
+
+ /* adjust bytesperline as per hardware - multiple of 32 */
+ if (!pixfmt->width)
+ pixfmt->width = pixfmt->bytesperline / bpp;
+
+ if (!pixfmt->bytesperline)
+ pixfmt->bytesperline = pixfmt->width * bpp;
+ else
+ user_info = 1;
+ pixfmt->bytesperline = ((pixfmt->bytesperline + 31) & ~31);
+
+ if (pixfmt->width < min_width) {
+ if (check) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "height is less than minimum,"
+ "input width = %d, min_width = %d\n",
+ pixfmt->width, min_width);
+ return -EINVAL;
+ }
+ pixfmt->width = min_width;
+ }
+
+ if (pixfmt->width > max_width) {
+ if (check) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "width is more than maximum,"
+ "input width = %d, max_width = %d\n",
+ pixfmt->width, max_width);
+ return -EINVAL;
+ }
+ pixfmt->width = max_width;
+ }
+
+ /*
+ * If height is zero, then atleast we need to have sizeimage
+ * to calculate height
+ */
+ if (!pixfmt->height) {
+ if (user_info) {
+ if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
+ /*
+ * for NV12 format, sizeimage is y-plane size
+ * + CbCr plane which is half of y-plane
+ */
+ pixfmt->height = pixfmt->sizeimage /
+ (pixfmt->bytesperline +
+ (pixfmt->bytesperline >> 1));
+ } else
+ pixfmt->height = pixfmt->sizeimage/
+ pixfmt->bytesperline;
+ }
+ }
+
+ if (pixfmt->height > max_height) {
+ if (check && !user_info) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "height is more than maximum,"
+ "input height = %d, max_height = %d\n",
+ pixfmt->height, max_height);
+ return -EINVAL;
+ }
+ pixfmt->height = max_height;
+ }
+
+ if (pixfmt->height < min_height) {
+ if (check && !user_info) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "width is less than minimum,"
+ "input height = %d, min_height = %d\n",
+ pixfmt->height, min_height);
+ return -EINVAL;
+ }
+ pixfmt->height = min_width;
+ }
+
+ /* if user has not provided bytesperline calculate it based on width */
+ if (!user_info)
+ pixfmt->bytesperline = (((pixfmt->width * bpp) + 31) & ~31);
+
+ if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
+ min_sizeimage = pixfmt->bytesperline * pixfmt->height +
+ (pixfmt->bytesperline * pixfmt->height >> 1);
+ else
+ min_sizeimage = pixfmt->bytesperline * pixfmt->height;
+
+ if (pixfmt->sizeimage < min_sizeimage) {
+ if (check && user_info) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "sizeimage is less, %d\n",
+ min_sizeimage);
+ return -EINVAL;
+ }
+ pixfmt->sizeimage = min_sizeimage;
+ }
+ return 0;
+}
+
+static int vpbe_display_g_priority(struct file *file, void *priv,
+ enum v4l2_priority *p)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ *p = v4l2_prio_max(&layer->prio);
+
+ return 0;
+}
+
+static int vpbe_display_s_priority(struct file *file, void *priv,
+ enum v4l2_priority p)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ int ret;
+
+ ret = v4l2_prio_change(&layer->prio, &fh->prio, p);
+
+ return ret;
+}
+
+static int vpbe_display_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_QUERYCAP, layer id = %d\n", layer->device_id);
+ *cap = vpbe_display_videocap;
+
+ return 0;
+}
+
+static int vpbe_display_s_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ struct vpbe_display *disp_dev = video_drvdata(file);
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_S_CROP, layer id = %d\n", layer->device_id);
+
+ if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct v4l2_rect *rect = &crop->c;
+
+ if (rect->top < 0 || rect->left < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Error:S_CROP params\n");
+ return -EINVAL;
+ }
+
+ if (vpbe_disp_check_window_params(disp_dev, rect)) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Error:S_CROP params\n");
+ return -EINVAL;
+ }
+ osd_device->ops.get_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+
+ vpbe_disp_calculate_scale_factor(disp_dev, layer,
+ rect->width,
+ rect->height);
+ vpbe_disp_adj_position(disp_dev, layer, rect->top,
+ rect->left);
+ ret = osd_device->ops.set_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in set layer config:\n");
+ return -EINVAL;
+ }
+
+ /* apply zooming and h or v expansion */
+ osd_device->ops.set_zoom(osd_device,
+ layer->layer_info.id,
+ layer->layer_info.h_zoom,
+ layer->layer_info.v_zoom);
+ ret = osd_device->ops.set_vid_expansion(osd_device,
+ layer->layer_info.h_exp,
+ layer->layer_info.v_exp);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in set vid expansion:\n");
+ return -EINVAL;
+ }
+
+ if ((layer->layer_info.h_zoom != ZOOM_X1) ||
+ (layer->layer_info.v_zoom != ZOOM_X1) ||
+ (layer->layer_info.h_exp != H_EXP_OFF) ||
+ (layer->layer_info.v_exp != V_EXP_OFF))
+ /* Enable expansion filter */
+ osd_device->ops.set_interpolation_filter(osd_device, 1);
+ else
+ osd_device->ops.set_interpolation_filter(osd_device, 0);
+
+ } else {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int vpbe_display_g_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_G_CROP, layer id = %d\n",
+ layer->device_id);
+
+ if (crop->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct v4l2_rect *rect = &crop->c;
+ if (ret)
+ return ret;
+ osd_device->ops.get_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+ rect->top = cfg->ypos;
+ rect->left = cfg->xpos;
+ rect->width = cfg->xsize;
+ rect->height = cfg->ysize;
+ } else {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int vpbe_display_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cropcap)
+{
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
+
+ cropcap->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ cropcap->bounds.left = 0;
+ cropcap->bounds.top = 0;
+ cropcap->bounds.width = vpbe_dev->current_timings.xres;
+ cropcap->bounds.height = vpbe_dev->current_timings.yres;
+ cropcap->pixelaspect = vpbe_dev->current_timings.aspect;
+ cropcap->defrect = cropcap->bounds;
+ return 0;
+}
+
+static int vpbe_display_g_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_G_FMT, layer id = %d\n",
+ layer->device_id);
+
+ /* If buffer type is video output */
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT == fmt->type) {
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+ /* Fill in the information about format */
+ *pixfmt = layer->pix_fmt;
+ } else {
+ v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vpbe_display_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ unsigned int index = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_ENUM_FMT, layer id = %d\n",
+ layer->device_id);
+ if (fmt->index > 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
+ return -EINVAL;
+ }
+
+ /* Fill in the information about format */
+ index = fmt->index;
+ memset(fmt, 0, sizeof(*fmt));
+ fmt->index = index;
+ fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ if (index == 0) {
+ strcpy(fmt->description, "YUV 4:2:2 - UYVY");
+ fmt->pixelformat = V4L2_PIX_FMT_UYVY;
+ } else if (index == 1) {
+ strcpy(fmt->description, "Y/CbCr 4:2:0");
+ fmt->pixelformat = V4L2_PIX_FMT_NV12;
+ }
+ return 0;
+}
+
+static int vpbe_display_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display *disp_dev = video_drvdata(file);
+ struct vpbe_display_obj *layer = fh->layer;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_S_FMT, layer id = %d\n",
+ layer->device_id);
+
+ /* If streaming is started, return error */
+ if (layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
+ return -EINVAL;
+ } else {
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+ /* Check for valid pixel format */
+ ret = vpbe_try_format(disp_dev, pixfmt, 1);
+ if (ret)
+ return ret;
+
+ /* YUV420 is requested, check availability of the
+ other video window */
+
+ layer->pix_fmt = *pixfmt;
+
+ /* Get osd layer config */
+ osd_device->ops.get_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+ /* Store the pixel format in the layer object */
+ cfg->xsize = pixfmt->width;
+ cfg->ysize = pixfmt->height;
+ cfg->line_length = pixfmt->bytesperline;
+ cfg->ypos = 0;
+ cfg->xpos = 0;
+ cfg->interlaced = vpbe_dev->current_timings.interlaced;
+
+ /* Change of the default pixel format for both video windows */
+ if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
+ struct vpbe_display_obj *otherlayer;
+ cfg->pixfmt = PIXFMT_NV12;
+ otherlayer = _vpbe_display_get_other_win(disp_dev,
+ layer);
+ otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
+ }
+
+ /* Set the layer config in the osd window */
+ ret = osd_device->ops.set_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+ if (ret < 0) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Error in S_FMT params:\n");
+ return -EINVAL;
+ }
+
+ /* Readback and fill the local copy of current pix format */
+ osd_device->ops.get_layer_config(osd_device,
+ layer->layer_info.id, cfg);
+
+ /* verify if readback values are as expected */
+ if (layer->pix_fmt.width != cfg->xsize ||
+ layer->pix_fmt.height != cfg->ysize ||
+ layer->pix_fmt.bytesperline != layer->layer_info.
+ config.line_length || (cfg->interlaced &&
+ layer->pix_fmt.field != V4L2_FIELD_INTERLACED) ||
+ (!cfg->interlaced && layer->pix_fmt.field !=
+ V4L2_FIELD_NONE)) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "mismatch:layer conf params:\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static int vpbe_display_try_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpbe_display *disp_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT == fmt->type) {
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+ /* Check for valid field format */
+ return vpbe_try_format(disp_dev, pixfmt, 0);
+ }
+ v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
+ return -EINVAL;
+}
+
+/**
+ * vpbe_display_s_std - Set the given standard in the encoder
+ *
+ * Sets the standard if supported by the current encoder. Return the status.
+ * 0 - success & -EINVAL on error
+ */
+static int vpbe_display_s_std(struct file *file, void *priv,
+ v4l2_std_id *std_id)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_display_obj *layer = fh->layer;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
+
+ /* If streaming is started, return error */
+ if (layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+ if (NULL != vpbe_dev->ops.s_std) {
+ ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
+ if (ret) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Failed to set standard for sub devices\n");
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+/**
+ * vpbe_display_g_std - Get the standard in the current encoder
+ *
+ * Get the standard in the current encoder. Return the status. 0 - success
+ * -EINVAL on error
+ */
+static int vpbe_display_g_std(struct file *file, void *priv,
+ v4l2_std_id *std_id)
+{
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
+
+ /* Get the standard from the current encoder */
+ if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
+ *std_id = vpbe_dev->current_timings.timings.std_id;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/**
+ * vpbe_display_enum_output - enumerate outputs
+ *
+ * Enumerates the outputs available at the vpbe display
+ * returns the status, -EINVAL if end of output list
+ */
+static int vpbe_display_enum_output(struct file *file, void *priv,
+ struct v4l2_output *output)
+{
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
+
+ /* Enumerate outputs */
+
+ if (NULL != vpbe_dev->ops.enum_outputs) {
+ ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
+ if (ret) {
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "Failed to enumerate outputs\n");
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+/**
+ * vpbe_display_s_output - Set output to
+ * the output specified by the index
+ */
+static int vpbe_display_s_output(struct file *file, void *priv,
+ unsigned int i)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_display_obj *layer = fh->layer;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
+ /* If streaming is started, return error */
+ if (layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+ if (NULL != vpbe_dev->ops.set_output) {
+ ret = vpbe_dev->ops.set_output(vpbe_dev, i);
+ if (ret) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Failed to set output for sub devices\n");
+ return -EINVAL;
+ }
+ }
+ return ret;
+}
+
+/**
+ * vpbe_display_g_output - Get output from subdevice
+ * for a given by the index
+ */
+static int vpbe_display_g_output(struct file *file, void *priv,
+ unsigned int *i)
+{
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
+ /* Get the standard from the current encoder */
+ *i = vpbe_dev->current_out_index;
+
+ return 0;
+}
+
+/**
+ * vpbe_display_enum_dv_presets - Enumerate the dv presets
+ *
+ * enum the preset in the current encoder. Return the status. 0 - success
+ * -EINVAL on error
+ */
+static int
+vpbe_display_enum_dv_presets(struct file *file, void *priv,
+ struct v4l2_dv_enum_preset *preset)
+{
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_PRESETS\n");
+
+ /* Enumerate outputs */
+
+ if (NULL != vpbe_dev->ops.enum_dv_presets) {
+ ret = vpbe_dev->ops.enum_dv_presets(vpbe_dev, preset);
+ if (ret) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Failed to enumerate dv presets info\n");
+ return -EINVAL;
+ }
+ }
+
+ return ret;
+}
+
+/**
+ * vpbe_display_s_dv_preset - Set the dv presets
+ *
+ * Set the preset in the current encoder. Return the status. 0 - success
+ * -EINVAL on error
+ */
+static int
+vpbe_display_s_dv_preset(struct file *file, void *priv,
+ struct v4l2_dv_preset *preset)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_display_obj *layer = fh->layer;
+ int ret = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_PRESETS\n");
+
+
+ /* If streaming is started, return error */
+ if (layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+
+ /* Set the given standard in the encoder */
+ if (NULL != vpbe_dev->ops.s_dv_preset) {
+ ret = vpbe_dev->ops.s_dv_preset(vpbe_dev, preset);
+ if (ret) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Failed to set the dv presets info\n");
+ return -EINVAL;
+ }
+ }
+ /* set the current norm to zero to be consistent. If STD is used
+ * v4l2 layer will set the norm properly on successful s_std call
+ */
+ layer->video_dev->current_norm = 0;
+ return ret;
+}
+
+/**
+ * vpbe_display_g_dv_preset - Set the dv presets
+ *
+ * Get the preset in the current encoder. Return the status. 0 - success
+ * -EINVAL on error
+ */
+static int
+vpbe_display_g_dv_preset(struct file *file, void *priv,
+ struct v4l2_dv_preset *dv_preset)
+{
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_PRESETS\n");
+
+ /* Get the given standard in the encoder */
+
+ if (vpbe_dev->current_timings.timings_type &
+ VPBE_ENC_DV_PRESET) {
+ dv_preset->preset =
+ vpbe_dev->current_timings.timings.dv_preset;
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int vpbe_display_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_STREAMOFF,layer id = %d\n",
+ layer->device_id);
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ /* If io is allowed for this file handle, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
+ return -EACCES;
+ }
+
+ /* If streaming is not started, return error */
+ if (!layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "streaming not started in layer"
+ " id = %d\n", layer->device_id);
+ return -EINVAL;
+ }
+
+ osd_device->ops.disable_layer(osd_device,
+ layer->layer_info.id);
+ layer->started = 0;
+ ret = videobuf_streamoff(&layer->buffer_queue);
+
+ return ret;
+}
+
+static int vpbe_display_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display *disp_dev = video_drvdata(file);
+ struct vpbe_display_obj *layer = fh->layer;
+
+ osd_device->ops.disable_layer(osd_device,
+ layer->layer_info.id);
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_STREAMON, layerid=%d\n",
+ layer->device_id);
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf_type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ /* If file handle is not allowed IO, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
+ return -EACCES;
+ }
+ /* If Streaming is already started, return error */
+ if (layer->started) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "layer is already streaming\n");
+ return -EBUSY;
+ }
+
+ /*
+ * Call videobuf_streamon to start streaming
+ * in videobuf
+ */
+ ret = videobuf_streamon(&layer->buffer_queue);
+ if (ret) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "error in videobuf_streamon\n");
+ return ret;
+ }
+ /* If buffer queue is empty, return error */
+ if (list_empty(&layer->dma_queue)) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "buffer queue is empty\n");
+ goto streamoff;
+ }
+ /* Get the next frame from the buffer queue */
+ layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
+ struct videobuf_buffer, queue);
+ /* Remove buffer from the buffer queue */
+ list_del(&layer->cur_frm->queue);
+ /* Mark state of the current frame to active */
+ layer->cur_frm->state = VIDEOBUF_ACTIVE;
+ /* Initialize field_id and started member */
+ layer->field_id = 0;
+
+ /* Set parameters in OSD and VENC */
+ ret = vpbe_set_video_display_params(disp_dev, layer);
+ if (ret < 0)
+ goto streamoff;
+
+ /*
+ * if request format is yuv420 semiplanar, need to
+ * enable both video windows
+ */
+ layer->started = 1;
+
+ layer_first_int[layer->device_id] = 1;
+
+ return ret;
+streamoff:
+ ret = videobuf_streamoff(&layer->buffer_queue);
+ return ret;
+}
+
+static int vpbe_display_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_DQBUF, layer id = %d\n",
+ layer->device_id);
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+ /* If this file handle is not allowed to do IO, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
+ return -EACCES;
+ }
+ if (file->f_flags & O_NONBLOCK)
+ /* Call videobuf_dqbuf for non blocking mode */
+ ret = videobuf_dqbuf(&layer->buffer_queue, buf, 1);
+ else
+ /* Call videobuf_dqbuf for blocking mode */
+ ret = videobuf_dqbuf(&layer->buffer_queue, buf, 0);
+ return ret;
+}
+
+static int vpbe_display_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *p)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_QBUF, layer id = %d\n",
+ layer->device_id);
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != p->type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ /* If this file handle is not allowed to do IO, return error */
+ if (!fh->io_allowed) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "No io_allowed\n");
+ return -EACCES;
+ }
+
+ return videobuf_qbuf(&layer->buffer_queue, p);
+}
+
+static int vpbe_display_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "VIDIOC_QUERYBUF, layer id = %d\n",
+ layer->device_id);
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != buf->type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ /* Call videobuf_querybuf to get information */
+ ret = videobuf_querybuf(&layer->buffer_queue, buf);
+
+ return ret;
+}
+
+static int vpbe_display_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *req_buf)
+{
+ int ret = 0;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_reqbufs\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != req_buf->type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ /* If io users of the layer is not zero, return error */
+ if (0 != layer->io_usrs) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "not IO user\n");
+ return -EBUSY;
+ }
+ /* Initialize videobuf queue as per the buffer type */
+ videobuf_queue_dma_contig_init(&layer->buffer_queue,
+ &video_qops,
+ vpbe_dev->pdev,
+ &layer->irqlock,
+ V4L2_BUF_TYPE_VIDEO_OUTPUT,
+ layer->pix_fmt.field,
+ sizeof(struct videobuf_buffer),
+ fh, NULL);
+
+ /* Set io allowed member of file handle to TRUE */
+ fh->io_allowed = 1;
+ /* Increment io usrs member of layer object to 1 */
+ layer->io_usrs = 1;
+ /* Store type of memory requested in layer object */
+ layer->memory = req_buf->memory;
+ /* Initialize buffer queue */
+ INIT_LIST_HEAD(&layer->dma_queue);
+ /* Allocate buffers */
+ ret = videobuf_reqbufs(&layer->buffer_queue, req_buf);
+
+ return ret;
+}
+
+/*
+ * vpbe_display_mmap()
+ * It is used to map kernel space buffers into user spaces
+ */
+static int vpbe_display_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+ /* Get the layer object and file handle object */
+ struct vpbe_fh *fh = filep->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_mmap\n");
+ return videobuf_mmap_mapper(&layer->buffer_queue, vma);
+}
+
+/* vpbe_display_poll(): It is used for select/poll system call
+ */
+static unsigned int vpbe_display_poll(struct file *filep, poll_table *wait)
+{
+ unsigned int err = 0;
+ struct vpbe_fh *fh = filep->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_poll\n");
+ if (layer->started)
+ err = videobuf_poll_stream(filep, &layer->buffer_queue, wait);
+ return err;
+}
+
+static int vpbe_display_cfg_layer_default(enum vpbe_display_device_id id,
+ struct vpbe_display *disp_dev)
+{
+ int err = 0;
+ struct osd_layer_config *layer_config;
+ struct vpbe_display_obj *layer = disp_dev->dev[id];
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+
+ /* First claim the layer for this device */
+ err = osd_device->ops.request_layer(osd_device,
+ layer->layer_info.id);
+ if (err < 0) {
+ /* Couldn't get layer */
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Display Manager failed to allocate layer\n");
+ return -EBUSY;
+ }
+
+ layer_config = cfg;
+ /* Set the default image and crop values */
+ layer_config->pixfmt = PIXFMT_YCbCrI;
+ layer->pix_fmt.pixelformat = V4L2_PIX_FMT_UYVY;
+ layer->pix_fmt.bytesperline = layer_config->line_length =
+ vpbe_dev->current_timings.xres * 2;
+
+ layer->pix_fmt.width = layer_config->xsize =
+ vpbe_dev->current_timings.xres;
+ layer->pix_fmt.height = layer_config->ysize =
+ vpbe_dev->current_timings.yres;
+ layer->pix_fmt.sizeimage =
+ layer->pix_fmt.bytesperline * layer->pix_fmt.height;
+ layer_config->xpos = 0;
+ layer_config->ypos = 0;
+ layer_config->interlaced = vpbe_dev->current_timings.interlaced;
+
+ /*
+ * turn off ping-pong buffer and field inversion to fix
+ * the image shaking problem in 1080I mode
+ */
+
+ if (cfg->interlaced)
+ layer->pix_fmt.field = V4L2_FIELD_INTERLACED;
+ else
+ layer->pix_fmt.field = V4L2_FIELD_NONE;
+
+ err = osd_device->ops.set_layer_config(osd_device,
+ layer->layer_info.id,
+ layer_config);
+ if (err < 0) {
+ /* Couldn't set layer */
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Display Manager failed to set osd layer\n");
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+/*
+ * vpbe_display_open()
+ * It creates object of file handle structure and stores it in private_data
+ * member of filepointer
+ */
+static int vpbe_display_open(struct file *file)
+{
+ int minor = iminor(file->f_path.dentry->d_inode);
+ struct vpbe_display *disp_dev = video_drvdata(file);
+ struct vpbe_display_obj *layer;
+ struct vpbe_fh *fh = NULL;
+ int found = -1;
+ int i = 0;
+
+ /* Check for valid minor number */
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the layer object */
+ layer = disp_dev->dev[i];
+ if (minor == layer->video_dev->minor) {
+ found = i;
+ break;
+ }
+ }
+
+ /* If not found, return error no device */
+ if (0 > found) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "device not found\n");
+ return -ENODEV;
+ }
+
+ /* Allocate memory for the file handle object */
+ fh = kmalloc(sizeof(struct vpbe_fh), GFP_KERNEL);
+ if (fh == NULL) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "unable to allocate memory for file handle object\n");
+ return -ENOMEM;
+ }
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "vpbe display open plane = %d\n",
+ layer->device_id);
+
+ /* store pointer to fh in private_data member of filep */
+ file->private_data = fh;
+ fh->layer = layer;
+ fh->disp_dev = disp_dev;
+
+ if (!layer->usrs) {
+ /* Configure the default values for the layer */
+ if (vpbe_display_cfg_layer_default(layer->device_id,
+ disp_dev)) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Unable to configure video layer"
+ " for id = %d\n", layer->device_id);
+ return -EINVAL;
+ }
+ }
+ /* Increment layer usrs counter */
+ layer->usrs++;
+ /* Set io_allowed member to false */
+ fh->io_allowed = 0;
+ /* Initialize priority of this instance to default priority */
+ fh->prio = V4L2_PRIORITY_UNSET;
+ v4l2_prio_open(&layer->prio, &fh->prio);
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "vpbe display device opened successfully\n");
+ return 0;
+}
+
+/*
+ * vpbe_display_release()
+ * This function deletes buffer queue, frees the buffers and the davinci
+ * display file * handle
+ */
+static int vpbe_display_release(struct file *file)
+{
+ /* Get the layer object and file handle object */
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display_obj *layer = fh->layer;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct vpbe_display *disp_dev = video_drvdata(file);
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
+ /* If this is doing IO and other layer are not closed */
+ if ((layer->usrs != 1) && fh->io_allowed) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Close other instances\n");
+ return -EAGAIN;
+ }
+
+ /* if this instance is doing IO */
+ if (fh->io_allowed) {
+ /* Reset io_usrs member of layer object */
+ layer->io_usrs = 0;
+
+ osd_device->ops.disable_layer(osd_device,
+ layer->layer_info.id);
+ layer->started = 0;
+ /* Free buffers allocated */
+ videobuf_queue_cancel(&layer->buffer_queue);
+ videobuf_mmap_free(&layer->buffer_queue);
+ }
+
+ /* Decrement layer usrs counter */
+ layer->usrs--;
+ /* If this file handle has initialize encoder device, reset it */
+ if (!layer->usrs) {
+ if (cfg->pixfmt == PIXFMT_NV12) {
+ struct vpbe_display_obj *otherlayer;
+ otherlayer =
+ _vpbe_display_get_other_win(disp_dev, layer);
+ osd_device->ops.disable_layer(osd_device,
+ otherlayer->layer_info.id);
+ osd_device->ops.release_layer(osd_device,
+ otherlayer->layer_info.id);
+ }
+ osd_device->ops.disable_layer(osd_device,
+ layer->layer_info.id);
+ osd_device->ops.release_layer(osd_device,
+ layer->layer_info.id);
+ }
+ /* Close the priority */
+ v4l2_prio_close(&layer->prio, fh->prio);
+ file->private_data = NULL;
+
+ /* Free memory allocated to file handle object */
+ kfree(fh);
+
+ disp_dev->cbcr_ofst = 0;
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int vpbe_display_g_register(struct file *file, void *priv,
+ struct v4l2_dbg_register *reg)
+{
+ struct v4l2_dbg_match *match = ®->match;
+
+ if (match->type >= 2) {
+ v4l2_subdev_call(vpbe_dev->venc,
+ core,
+ g_register,
+ reg);
+ }
+
+ return 0;
+}
+
+static int vpbe_display_s_register(struct file *file, void *priv,
+ struct v4l2_dbg_register *reg)
+{
+ return 0;
+}
+#endif
+
+/* vpbe capture ioctl operations */
+static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
+ .vidioc_querycap = vpbe_display_querycap,
+ .vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
+ .vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
+ .vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
+ .vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
+ .vidioc_reqbufs = vpbe_display_reqbufs,
+ .vidioc_querybuf = vpbe_display_querybuf,
+ .vidioc_qbuf = vpbe_display_qbuf,
+ .vidioc_dqbuf = vpbe_display_dqbuf,
+ .vidioc_streamon = vpbe_display_streamon,
+ .vidioc_streamoff = vpbe_display_streamoff,
+ .vidioc_cropcap = vpbe_display_cropcap,
+ .vidioc_g_crop = vpbe_display_g_crop,
+ .vidioc_s_crop = vpbe_display_s_crop,
+ .vidioc_g_priority = vpbe_display_g_priority,
+ .vidioc_s_priority = vpbe_display_s_priority,
+ .vidioc_s_std = vpbe_display_s_std,
+ .vidioc_g_std = vpbe_display_g_std,
+ .vidioc_enum_output = vpbe_display_enum_output,
+ .vidioc_s_output = vpbe_display_s_output,
+ .vidioc_g_output = vpbe_display_g_output,
+ .vidioc_s_dv_preset = vpbe_display_s_dv_preset,
+ .vidioc_g_dv_preset = vpbe_display_g_dv_preset,
+ .vidioc_enum_dv_presets = vpbe_display_enum_dv_presets,
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .vidioc_g_register = vpbe_display_g_register,
+ .vidioc_s_register = vpbe_display_s_register,
+#endif
+};
+
+static struct v4l2_file_operations vpbe_fops = {
+ .owner = THIS_MODULE,
+ .open = vpbe_display_open,
+ .release = vpbe_display_release,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vpbe_display_mmap,
+ .poll = vpbe_display_poll
+};
+
+static int vpbe_device_get(struct device *dev, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+
+ if (strcmp("vpbe_controller", pdev->name) == 0)
+ vpbe_dev = platform_get_drvdata(pdev);
+
+ if (strcmp("vpbe-osd", pdev->name) == 0)
+ osd_device = platform_get_drvdata(pdev);
+
+ return 0;
+}
+
+/*Configure the channels, buffer size */
+static int init_vpbe_layer_objects(int i)
+{
+ int free_buffer_index;
+
+ /* Default number of buffers should be 3 */
+ if ((video2_numbuffers > 0) &&
+ (video2_numbuffers < display_buf_config_params.min_numbuffers))
+ video2_numbuffers = display_buf_config_params.min_numbuffers;
+ if ((video3_numbuffers > 0) &&
+ (video3_numbuffers < display_buf_config_params.min_numbuffers))
+ video3_numbuffers = display_buf_config_params.min_numbuffers;
+
+ /*
+ * Set buffer size to min buffers size if invalid
+ * buffer size is given
+ */
+ if (video2_bufsize <
+ display_buf_config_params.min_bufsize[VPBE_DISPLAY_DEVICE_0])
+ video2_bufsize =
+ display_buf_config_params.min_bufsize[VPBE_DISPLAY_DEVICE_0];
+
+ if (video3_bufsize <
+ display_buf_config_params.min_bufsize[VPBE_DISPLAY_DEVICE_1])
+ video3_bufsize =
+ display_buf_config_params.min_bufsize[VPBE_DISPLAY_DEVICE_1];
+
+ /* set number of buffers, they could come from boot/args */
+ display_buf_config_params.numbuffers[VPBE_DISPLAY_DEVICE_0] =
+ video2_numbuffers;
+ display_buf_config_params.numbuffers[VPBE_DISPLAY_DEVICE_1] =
+ video3_numbuffers;
+
+ if (display_buf_config_params.numbuffers[0] == 0)
+ printk(KERN_ERR "no vid2 buffer allocated\n");
+ if (display_buf_config_params.numbuffers[1] == 0)
+ printk(KERN_ERR "no vid3 buffer allocated\n");
+ free_buffer_index = display_buf_config_params.numbuffers[i - 1];
+
+ return 0;
+}
+
+
+/*
+ * vpbe_display_probe()
+ * This function creates device entries by register itself to the V4L2 driver
+ * and initializes fields of each layer objects
+ */
+static __init int vpbe_display_probe(struct platform_device *pdev)
+{
+ int i, j = 0, k, err = 0;
+ struct vpbe_display *disp_dev;
+ struct video_device *vbd = NULL;
+ struct vpbe_display_obj *vpbe_display_layer = NULL;
+ struct resource *res;
+ int irq;
+
+ printk(KERN_DEBUG "vpbe_display_probe\n");
+
+ /* Allocate memory for vpbe_display */
+ disp_dev = kzalloc(sizeof(struct vpbe_display), GFP_KERNEL);
+ if (!disp_dev) {
+ printk(KERN_ERR "ran out of memory\n");
+ return -ENOMEM;
+ }
+
+ /* Allocate memory for four plane display objects */
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ disp_dev->dev[i] =
+ kmalloc(sizeof(struct vpbe_display_obj), GFP_KERNEL);
+ /* If memory allocation fails, return error */
+ if (!disp_dev->dev[i]) {
+ printk(KERN_ERR "ran out of memory\n");
+ err = -ENOMEM;
+ goto probe_out;
+ }
+ spin_lock_init(&disp_dev->dev[i]->irqlock);
+ mutex_init(&disp_dev->dev[i]->opslock);
+ }
+ spin_lock_init(&disp_dev->dma_queue_lock);
+
+ err = init_vpbe_layer_objects(i);
+ if (err) {
+ printk(KERN_ERR "Error initializing vpbe display\n");
+ return err;
+ }
+
+ /*
+ * Scan all the platform devices to find the vpbe
+ * controller device and get the vpbe_dev object
+ */
+ err = bus_for_each_dev(&platform_bus_type, NULL, NULL,
+ vpbe_device_get);
+ if (err < 0)
+ return err;
+
+ /* Initialize the vpbe display controller */
+ if (NULL != vpbe_dev->ops.initialize) {
+ err = vpbe_dev->ops.initialize(&pdev->dev, vpbe_dev);
+ if (err) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Error initing vpbe\n");
+ err = -ENOMEM;
+ goto probe_out;
+ }
+ }
+
+ /* check the name of davinci device */
+ if (vpbe_dev->cfg->module_name != NULL)
+ strcpy(vpbe_display_videocap.card,
+ vpbe_dev->cfg->module_name);
+
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the layer object */
+ vpbe_display_layer = disp_dev->dev[i];
+ /* Allocate memory for video device */
+ vbd = video_device_alloc();
+ if (vbd == NULL) {
+ for (j = 0; j < i; j++) {
+ video_device_release(
+ disp_dev->dev[j]->video_dev);
+ }
+ v4l2_err(&vpbe_dev->v4l2_dev, "ran out of memory\n");
+ err = -ENOMEM;
+ goto probe_out;
+ }
+ /* Initialize field of video device */
+ vbd->release = video_device_release;
+ vbd->fops = &vpbe_fops;
+ vbd->ioctl_ops = &vpbe_ioctl_ops;
+ vbd->minor = -1;
+ vbd->v4l2_dev = &vpbe_dev->v4l2_dev;
+ vbd->lock = &vpbe_display_layer->opslock;
+
+ if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
+ vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
+ vbd->current_norm =
+ vpbe_dev->current_timings.timings.std_id;
+ } else
+ vbd->current_norm = 0;
+
+ snprintf(vbd->name, sizeof(vbd->name),
+ "DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
+ (VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
+ (VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
+ (VPBE_DISPLAY_VERSION_CODE) & 0xff);
+
+ /* Set video_dev to the video device */
+ vpbe_display_layer->video_dev = vbd;
+ vpbe_display_layer->device_id = i;
+
+ vpbe_display_layer->layer_info.id =
+ ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
+ if (display_buf_config_params.numbuffers[i] == 0)
+ vpbe_display_layer->memory = V4L2_MEMORY_USERPTR;
+ else
+ vpbe_display_layer->memory = V4L2_MEMORY_MMAP;
+
+ /* Initialize field of the display layer objects */
+ vpbe_display_layer->usrs = 0;
+ vpbe_display_layer->io_usrs = 0;
+ vpbe_display_layer->started = 0;
+
+ /* Initialize prio member of layer object */
+ v4l2_prio_init(&vpbe_display_layer->prio);
+
+ /* Register video device */
+ v4l2_info(&vpbe_dev->v4l2_dev,
+ "Trying to register VPBE display device.\n");
+ v4l2_info(&vpbe_dev->v4l2_dev,
+ "layer=%x,layer->video_dev=%x\n",
+ (int)vpbe_display_layer,
+ (int)&vpbe_display_layer->video_dev);
+
+ err = video_register_device(vpbe_display_layer->
+ video_dev,
+ VFL_TYPE_GRABBER,
+ vpbe_display_nr[i]);
+ if (err)
+ goto probe_out;
+ /* set the driver data in platform device */
+ platform_set_drvdata(pdev, disp_dev);
+ video_set_drvdata(vpbe_display_layer->video_dev, disp_dev);
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Unable to get VENC interrupt resource\n");
+ err = -ENODEV;
+ goto probe_out;
+ }
+ irq = res->start;
+ if (request_irq(irq, venc_isr, IRQF_DISABLED, VPBE_DISPLAY_DRIVER,
+ disp_dev)) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Unable to request interrupt\n");
+ err = -ENODEV;
+ goto probe_out;
+ }
+ printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n");
+ return 0;
+probe_out:
+ kfree(disp_dev);
+
+ for (k = 0; k < j; k++) {
+ /* Get the pointer to the layer object */
+ vpbe_display_layer = disp_dev->dev[k];
+ /* Unregister video device */
+ video_unregister_device(vpbe_display_layer->video_dev);
+ /* Release video device */
+ video_device_release(vpbe_display_layer->video_dev);
+ vpbe_display_layer->video_dev = NULL;
+ }
+ return err;
+}
+
+/*
+ * vpbe_display_remove()
+ * It un-register hardware layer from V4L2 driver
+ */
+static int vpbe_display_remove(struct platform_device *pdev)
+{
+ int i;
+ struct vpbe_display_obj *vpbe_display_layer;
+ struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
+ struct resource *res;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
+
+ /* unregister irq */
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ free_irq(res->start, disp_dev);
+
+ /* deinitialize the vpbe display controller */
+ if (NULL != vpbe_dev->ops.deinitialize)
+ vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
+ /* un-register device */
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ /* Get the pointer to the layer object */
+ vpbe_display_layer = disp_dev->dev[i];
+ /* Unregister video device */
+ video_unregister_device(vpbe_display_layer->video_dev);
+
+ vpbe_display_layer->video_dev = NULL;
+ }
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ kfree(disp_dev->dev[i]);
+ disp_dev->dev[i] = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver vpbe_display_driver = {
+ .driver = {
+ .name = VPBE_DISPLAY_DRIVER,
+ .owner = THIS_MODULE,
+ .bus = &platform_bus_type,
+ },
+ .probe = vpbe_display_probe,
+ .remove = __devexit_p(vpbe_display_remove),
+};
+
+/*
+ * vpbe_display_init()
+ * This function registers device and driver to the kernel, requests irq
+ * handler and allocates memory for layer objects
+ */
+static __init int vpbe_display_init(void)
+{
+ int err = 0;
+
+ printk(KERN_DEBUG "vpbe_display_init\n");
+
+ /* Register driver to the kernel */
+ err = platform_driver_register(&vpbe_display_driver);
+ if (0 != err)
+ return err;
+
+ printk(KERN_DEBUG "vpbe_display_init:"
+ "VPBE V4L2 Display Driver V1.0 loaded\n");
+ return 0;
+}
+
+/*
+ * vpbe_display_cleanup()
+ * This function un-registers device and driver to the kernel, frees requested
+ * irq handler and de-allocates memory allocated for layer objects.
+ */
+static void vpbe_display_cleanup(void)
+{
+ printk(KERN_DEBUG "vpbe_display_cleanup\n");
+
+ /* platform driver unregister */
+ platform_driver_unregister(&vpbe_display_driver);
+}
+
+/* Function for module initialization and cleanup */
+module_init(vpbe_display_init);
+module_exit(vpbe_display_cleanup);
+
+MODULE_DESCRIPTION("TI DMXXX VPBE Display controller");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");
new file mode 100644
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2010 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 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.
+ */
+#ifndef VPBE_DISPLAY_H
+#define VPBE_DISPLAY_H
+
+#ifdef __KERNEL__
+
+/* Header files */
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/videobuf-dma-contig.h>
+#include <media/davinci/vpbe_types.h>
+#include <media/davinci/vpbe_osd.h>
+#include <media/davinci/vpbe.h>
+
+#define VPBE_DISPLAY_MAX_DEVICES 2
+
+enum vpbe_display_device_id {
+ VPBE_DISPLAY_DEVICE_0,
+ VPBE_DISPLAY_DEVICE_1
+};
+
+#define VPBE_DISPLAY_DRV_NAME "vpbe-display"
+
+#define VPBE_DISPLAY_MAJOR_RELEASE 1
+#define VPBE_DISPLAY_MINOR_RELEASE 0
+#define VPBE_DISPLAY_BUILD 1
+#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
+ (VPBE_DISPLAY_MINOR_RELEASE << 8) | \
+ VPBE_DISPLAY_BUILD)
+
+#define VPBE_DISPLAY_VALID_FIELD(field) ((V4L2_FIELD_NONE == field) || \
+ (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
+
+/* Exp ratio numerator and denominator constants */
+#define VPBE_DISPLAY_H_EXP_RATIO_N (9)
+#define VPBE_DISPLAY_H_EXP_RATIO_D (8)
+#define VPBE_DISPLAY_V_EXP_RATIO_N (6)
+#define VPBE_DISPLAY_V_EXP_RATIO_D (5)
+
+/* Zoom multiplication factor */
+#define VPBE_DISPLAY_ZOOM_4X (4)
+#define VPBE_DISPLAY_ZOOM_2X (2)
+
+/* Structures */
+struct display_layer_info {
+ int enable;
+ /* Layer ID used by Display Manager */
+ enum osd_layer id;
+ struct osd_layer_config config;
+ enum osd_zoom_factor h_zoom;
+ enum osd_zoom_factor v_zoom;
+ enum osd_h_exp_ratio h_exp;
+ enum osd_v_exp_ratio v_exp;
+};
+
+/* vpbe display object structure */
+struct vpbe_display_obj {
+ /* number of buffers in fbuffers */
+ unsigned int numbuffers;
+ /* Pointer pointing to current v4l2_buffer */
+ struct videobuf_buffer *cur_frm;
+ /* Pointer pointing to next v4l2_buffer */
+ struct videobuf_buffer *next_frm;
+ /* videobuf specific parameters
+ * Buffer queue used in video-buf
+ */
+ struct videobuf_queue buffer_queue;
+ /* Queue of filled frames */
+ struct list_head dma_queue;
+ /* Used in video-buf */
+ spinlock_t irqlock;
+ /* V4l2 specific parameters */
+ /* Identifies video device for this layer */
+ struct video_device *video_dev;
+ /* This field keeps track of type of buffer exchange mechanism user
+ * has selected
+ */
+ enum v4l2_memory memory;
+ /* Used to keep track of state of the priority */
+ struct v4l2_prio_state prio;
+ /* Used to store pixel format */
+ struct v4l2_pix_format pix_fmt;
+ enum v4l2_field buf_field;
+ /* Video layer configuration params */
+ struct display_layer_info layer_info;
+ /* vpbe specific parameters
+ * enable window for display
+ */
+ unsigned char window_enable;
+ /* number of open instances of the layer */
+ unsigned int usrs;
+ /* number of users performing IO */
+ unsigned int io_usrs;
+ /* Indicates id of the field which is being displayed */
+ unsigned int field_id;
+ /* Indicates whether streaming started */
+ unsigned char started;
+ /* Identifies device object */
+ enum vpbe_display_device_id device_id;
+ /* facilitation of ioctl ops lock by v4l2*/
+ struct mutex opslock;
+};
+
+/* vpbe device structure */
+struct vpbe_display {
+ /* layer specific parameters */
+ /* lock for isr updates to buf layers*/
+ spinlock_t dma_queue_lock;
+ /* C-Plane offset from start of y-plane */
+ unsigned int cbcr_ofst;
+ struct vpbe_display_obj *dev[VPBE_DISPLAY_MAX_DEVICES];
+};
+
+/* File handle structure */
+struct vpbe_fh {
+ /* vpbe device structure */
+ struct vpbe_display *disp_dev;
+ /* pointer to layer object for opened device */
+ struct vpbe_display_obj *layer;
+ /* Indicates whether this file handle is doing IO */
+ unsigned char io_allowed;
+ /* Used to keep track priority of this instance */
+ enum v4l2_priority prio;
+};
+
+struct buf_config_params {
+ unsigned char min_numbuffers;
+ unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
+ unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
+ unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
+};
+
+static int venc_is_second_field(void);
+#endif /* end of __KERNEL__ */
+#endif /* VPBE_DISPLAY_H */
new file mode 100644
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2010 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 version 2.
+ *
+ * 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
+ */
+#ifndef _VPBE_TYPES_H
+#define _VPBE_TYPES_H
+
+enum vpbe_types {
+ VPBE_VERSION_1 = 1,
+ VPBE_VERSION_2,
+ VPBE_VERSION_3,
+};
+
+/* vpbe_timing_type - Timing types used in vpbe device */
+enum vpbe_enc_timings_type {
+ VPBE_ENC_STD = 0x1,
+ VPBE_ENC_DV_PRESET = 0x2,
+ VPBE_ENC_CUSTOM_TIMINGS = 0x4,
+ /* Used when set timings through FB device interface */
+ VPBE_ENC_TIMINGS_INVALID = 0x8,
+};
+
+union vpbe_timings {
+ v4l2_std_id std_id;
+ unsigned int dv_preset;
+};
+
+/*
+ * struct vpbe_enc_mode_info
+ * @name: ptr to name string of the standard, "NTSC", "PAL" etc
+ * @std: standard or non-standard mode. 1 - standard, 0 - nonstandard
+ * @interlaced: 1 - interlaced, 0 - non interlaced/progressive
+ * @xres: x or horizontal resolution of the display
+ * @yres: y or vertical resolution of the display
+ * @fps: frame per second
+ * @left_margin: left margin of the display
+ * @right_margin: right margin of the display
+ * @upper_margin: upper margin of the display
+ * @lower_margin: lower margin of the display
+ * @hsync_len: h-sync length
+ * @vsync_len: v-sync length
+ * @flags: bit field: bit usage is documented below
+ *
+ * Description:
+ * Structure holding timing and resolution information of a standard.
+ * Used by vpbe_device to set required non-standard timing in the
+ * venc when lcd controller output is connected to a external encoder.
+ * A table of timings is maintained in vpbe device to set this in
+ * venc when external encoder is connected to lcd controller output.
+ * Encoder may provide a g_dv_timings() API to override these values
+ * as needed.
+ *
+ * Notes
+ * ------
+ * if_type should be used only by encoder manager and encoder.
+ * flags usage
+ * b0 (LSB) - hsync polarity, 0 - negative, 1 - positive
+ * b1 - vsync polarity, 0 - negative, 1 - positive
+ * b2 - field id polarity, 0 - negative, 1 - positive
+ */
+struct vpbe_enc_mode_info {
+ unsigned char *name;
+ enum vpbe_enc_timings_type timings_type;
+ union vpbe_timings timings;
+ unsigned int interlaced;
+ unsigned int xres;
+ unsigned int yres;
+ struct v4l2_fract aspect;
+ struct v4l2_fract fps;
+ unsigned int left_margin;
+ unsigned int right_margin;
+ unsigned int upper_margin;
+ unsigned int lower_margin;
+ unsigned int hsync_len;
+ unsigned int vsync_len;
+ unsigned int flags;
+};
+
+#endif