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path: root/drivers/media/platform/davinci/vpbe_display.c
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Diffstat (limited to 'drivers/media/platform/davinci/vpbe_display.c')
-rw-r--r--drivers/media/platform/davinci/vpbe_display.c1838
1 files changed, 1838 insertions, 0 deletions
diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c
new file mode 100644
index 000000000000..9a05c817462c
--- /dev/null
+++ b/drivers/media/platform/davinci/vpbe_display.c
@@ -0,0 +1,1838 @@
+/*
+ * 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/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;
+
+#define VPBE_DEFAULT_NUM_BUFS 3
+
+module_param(debug, int, 0644);
+
+static int venc_is_second_field(struct vpbe_display *disp_dev)
+{
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ int ret;
+ 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;
+}
+
+static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
+ struct vpbe_layer *layer)
+{
+ struct timespec timevalue;
+
+ if (layer->cur_frm == layer->next_frm)
+ return;
+ ktime_get_ts(&timevalue);
+ layer->cur_frm->ts.tv_sec = timevalue.tv_sec;
+ layer->cur_frm->ts.tv_usec = timevalue.tv_nsec / NSEC_PER_USEC;
+ 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;
+}
+
+static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
+ struct vpbe_layer *layer)
+{
+ struct osd_state *osd_device = disp_obj->osd_device;
+ unsigned long addr;
+
+ spin_lock(&disp_obj->dma_queue_lock);
+ if (list_empty(&layer->dma_queue) ||
+ (layer->cur_frm != layer->next_frm)) {
+ spin_unlock(&disp_obj->dma_queue_lock);
+ return;
+ }
+ /*
+ * one field is displayed configure
+ * the next frame if it is available
+ * otherwise hold on current frame
+ * Get next from the buffer queue
+ */
+ 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);
+ spin_unlock(&disp_obj->dma_queue_lock);
+ /* 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_obj->cbcr_ofst);
+}
+
+/* interrupt service routine */
+static irqreturn_t venc_isr(int irq, void *arg)
+{
+ struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
+ struct vpbe_layer *layer;
+ static unsigned last_event;
+ unsigned event = 0;
+ int fid;
+ int i;
+
+ if ((NULL == arg) || (NULL == disp_dev->dev[0]))
+ return IRQ_HANDLED;
+
+ if (venc_is_second_field(disp_dev))
+ 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;
+
+ 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;
+
+ if (layer->layer_first_int) {
+ layer->layer_first_int = 0;
+ continue;
+ }
+ /* Check the field format */
+ if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
+ (event & VENC_END_OF_FRAME)) {
+ /* Progressive mode */
+
+ vpbe_isr_even_field(disp_dev, layer);
+ vpbe_isr_odd_field(disp_dev, layer);
+ } else {
+ /* Interlaced mode */
+
+ layer->field_id ^= 1;
+ if (event & VENC_FIRST_FIELD)
+ fid = 0;
+ else
+ fid = 1;
+
+ /*
+ * If field id does not match with store
+ * field id
+ */
+ if (fid != layer->field_id) {
+ /* Make them in sync */
+ layer->field_id = fid;
+ continue;
+ }
+ /*
+ * device field id and local field id are
+ * in sync. If this is even field
+ */
+ if (0 == fid)
+ vpbe_isr_even_field(disp_dev, layer);
+ else /* odd field */
+ vpbe_isr_odd_field(disp_dev, layer);
+ }
+ }
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ unsigned long addr;
+ int ret;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
+
+ *size = layer->pix_fmt.sizeimage;
+
+ /* Store number of buffers allocated in numbuffer member */
+ if (*count < VPBE_DEFAULT_NUM_BUFS)
+ *count = layer->numbuffers = VPBE_DEFAULT_NUM_BUFS;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_display *disp = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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_layer*
+_vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
+ struct vpbe_layer *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_osd_display_params(struct vpbe_display *disp_dev,
+ struct vpbe_layer *layer)
+{
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct osd_state *osd_device = disp_dev->osd_device;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ unsigned long addr;
+ int ret;
+
+ 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_layer *otherlayer =
+ _vpbe_display_get_other_win_layer(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_layer *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;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ int calculated_xsize;
+ int h_exp = 0;
+ int v_exp = 0;
+ int h_scale;
+ int v_scale;
+
+ 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)) {
+ calculated_xsize = (cfg->xsize *
+ VPBE_DISPLAY_H_EXP_RATIO_N) /
+ VPBE_DISPLAY_H_EXP_RATIO_D;
+ if (calculated_xsize <= expected_xsize) {
+ h_exp = 1;
+ cfg->xsize = calculated_xsize;
+ }
+ }
+ }
+ 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)) {
+ calculated_xsize = (cfg->ysize *
+ VPBE_DISPLAY_V_EXP_RATIO_N) /
+ VPBE_DISPLAY_V_EXP_RATIO_D;
+ if (calculated_xsize <= expected_ysize) {
+ v_exp = 1;
+ cfg->ysize = calculated_xsize;
+ }
+ }
+ }
+ 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_layer *layer,
+ int top, int left)
+{
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+
+ cfg->xpos = min((unsigned int)left,
+ vpbe_dev->current_timings.xres - cfg->xsize);
+ cfg->ypos = min((unsigned int)top,
+ vpbe_dev->current_timings.yres - cfg->ysize);
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
+ "new xpos = %d, ypos = %d\n",
+ cfg->xpos, cfg->ypos);
+}
+
+static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
+ struct v4l2_rect *c)
+{
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+
+ if ((c->width == 0) ||
+ ((c->width + c->left) > vpbe_dev->current_timings.xres))
+ c->width = vpbe_dev->current_timings.xres - c->left;
+
+ if ((c->height == 0) || ((c->height + c->top) >
+ vpbe_dev->current_timings.yres))
+ c->height = vpbe_dev->current_timings.yres - c->top;
+
+ /* window height must be even for interlaced display */
+ if (vpbe_dev->current_timings.interlaced)
+ c->height &= (~0x01);
+
+}
+
+/**
+ * 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.
+ */
+static int vpbe_try_format(struct vpbe_display *disp_dev,
+ struct v4l2_pix_format *pixfmt, int check)
+{
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ int min_height = 1;
+ int min_width = 32;
+ int max_height;
+ int max_width;
+ int bpp;
+
+ 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_INTERLACED) &&
+ (pixfmt->field != V4L2_FIELD_NONE)) {
+ 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->width < min_width) ||
+ (pixfmt->width > max_width)) {
+ pixfmt->width = vpbe_dev->current_timings.xres;
+ }
+
+ if (!pixfmt->height || (pixfmt->height < min_height) ||
+ (pixfmt->height > max_height)) {
+ pixfmt->height = vpbe_dev->current_timings.yres;
+ }
+
+ if (pixfmt->bytesperline < (pixfmt->width * bpp))
+ pixfmt->bytesperline = pixfmt->width * bpp;
+
+ /* Make the bytesperline 32 byte aligned */
+ pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
+
+ if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
+ pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
+ (pixfmt->bytesperline * pixfmt->height >> 1);
+ else
+ pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
+
+ 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_layer *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_layer *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_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ cap->version = VPBE_DISPLAY_VERSION_CODE;
+ cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+ strlcpy(cap->driver, VPBE_DISPLAY_DRIVER, sizeof(cap->driver));
+ strlcpy(cap->bus_info, "platform", sizeof(cap->bus_info));
+ strlcpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
+
+ return 0;
+}
+
+static int vpbe_display_s_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_display *disp_dev = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct osd_state *osd_device = disp_dev->osd_device;
+ struct v4l2_rect *rect = &crop->c;
+ int ret;
+
+ 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) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ if (rect->top < 0)
+ rect->top = 0;
+ if (rect->left < 0)
+ rect->left = 0;
+
+ vpbe_disp_check_window_params(disp_dev, rect);
+
+ 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);
+
+ return 0;
+}
+
+static int vpbe_display_g_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ struct osd_state *osd_device = fh->disp_dev->osd_device;
+ struct v4l2_rect *rect = &crop->c;
+ int ret;
+
+ 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) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "Invalid buf type\n");
+ ret = -EINVAL;
+ }
+ 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;
+
+ return 0;
+}
+
+static int vpbe_display_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *cropcap)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
+ return -EINVAL;
+ }
+ /* Fill in the information about format */
+ fmt->fmt.pix = layer->pix_fmt;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ 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 > 1) {
+ 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 {
+ 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_display *disp_dev = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+ struct osd_state *osd_device = disp_dev->osd_device;
+ int ret;
+
+ 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;
+ }
+ /* 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;
+
+ if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
+ cfg->pixfmt = PIXFMT_YCbCrI;
+
+ /* Change of the default pixel format for both video windows */
+ if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
+ struct vpbe_layer *otherlayer;
+ cfg->pixfmt = PIXFMT_NV12;
+ otherlayer = _vpbe_display_get_other_win_layer(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);
+
+ return 0;
+}
+
+static int vpbe_display_try_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_display *disp_dev = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
+
+ if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
+ v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
+ return -EINVAL;
+ }
+
+ /* Check for valid field format */
+ return vpbe_try_format(disp_dev, pixfmt, 0);
+
+}
+
+/**
+ * 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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;
+ }
+ } else {
+ 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)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
+
+ /* Enumerate outputs */
+
+ if (NULL == vpbe_dev->ops.enum_outputs)
+ return -EINVAL;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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)
+ return -EINVAL;
+
+ 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 0;
+}
+
+/**
+ * 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)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_PRESETS\n");
+
+ /* Enumerate outputs */
+ if (NULL == vpbe_dev->ops.enum_dv_presets)
+ return -EINVAL;
+
+ 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 0;
+}
+
+/**
+ * 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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 (!vpbe_dev->ops.s_dv_preset)
+ return -EINVAL;
+
+ 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 0;
+}
+
+/**
+ * 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)
+{
+ struct vpbe_fh *fh = priv;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ struct osd_state *osd_device = fh->disp_dev->osd_device;
+ int ret;
+
+ 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_display *disp_dev = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ struct osd_state *osd_device = disp_dev->osd_device;
+ int ret;
+
+ 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_osd_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->layer_first_int = 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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)
+{
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ 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_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ int ret;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_mmap\n");
+
+ if (mutex_lock_interruptible(&layer->opslock))
+ return -ERESTARTSYS;
+ ret = videobuf_mmap_mapper(&layer->buffer_queue, vma);
+ mutex_unlock(&layer->opslock);
+ return ret;
+}
+
+/* vpbe_display_poll(): It is used for select/poll system call
+ */
+static unsigned int vpbe_display_poll(struct file *filep, poll_table *wait)
+{
+ struct vpbe_fh *fh = filep->private_data;
+ struct vpbe_layer *layer = fh->layer;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+ unsigned int err = 0;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_poll\n");
+ if (layer->started) {
+ mutex_lock(&layer->opslock);
+ err = videobuf_poll_stream(filep, &layer->buffer_queue, wait);
+ mutex_unlock(&layer->opslock);
+ }
+ return err;
+}
+
+/*
+ * 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)
+{
+ struct vpbe_fh *fh = NULL;
+ struct vpbe_layer *layer = video_drvdata(file);
+ struct vpbe_display *disp_dev = layer->disp_dev;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ struct osd_state *osd_device = disp_dev->osd_device;
+ int err;
+
+ /* 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) {
+ if (mutex_lock_interruptible(&layer->opslock))
+ return -ERESTARTSYS;
+ /* First claim the layer for this device */
+ err = osd_device->ops.request_layer(osd_device,
+ layer->layer_info.id);
+ mutex_unlock(&layer->opslock);
+ if (err < 0) {
+ /* Couldn't get layer */
+ v4l2_err(&vpbe_dev->v4l2_dev,
+ "Display Manager failed to allocate layer\n");
+ kfree(fh);
+ 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_layer *layer = fh->layer;
+ struct osd_layer_config *cfg = &layer->layer_info.config;
+ struct vpbe_display *disp_dev = fh->disp_dev;
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ struct osd_state *osd_device = disp_dev->osd_device;
+
+ v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
+
+ mutex_lock(&layer->opslock);
+ /* 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_layer *otherlayer;
+ otherlayer =
+ _vpbe_display_get_other_win_layer(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;
+ mutex_unlock(&layer->opslock);
+
+ /* 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 = &reg->match;
+ struct vpbe_fh *fh = file->private_data;
+ struct vpbe_device *vpbe_dev = fh->disp_dev->vpbe_dev;
+
+ 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);
+ struct vpbe_display *vpbe_disp = data;
+
+ if (strcmp("vpbe_controller", pdev->name) == 0)
+ vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
+
+ if (strcmp("vpbe-osd", pdev->name) == 0)
+ vpbe_disp->osd_device = platform_get_drvdata(pdev);
+
+ return 0;
+}
+
+static __devinit int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
+ struct platform_device *pdev)
+{
+ struct vpbe_layer *vpbe_display_layer = NULL;
+ struct video_device *vbd = NULL;
+
+ /* Allocate memory for four plane display objects */
+
+ disp_dev->dev[i] =
+ kzalloc(sizeof(struct vpbe_layer), GFP_KERNEL);
+
+ /* If memory allocation fails, return error */
+ if (!disp_dev->dev[i]) {
+ printk(KERN_ERR "ran out of memory\n");
+ return -ENOMEM;
+ }
+ spin_lock_init(&disp_dev->dev[i]->irqlock);
+ mutex_init(&disp_dev->dev[i]->opslock);
+
+ /* Get the pointer to the layer object */
+ vpbe_display_layer = disp_dev->dev[i];
+ vbd = &vpbe_display_layer->video_dev;
+ /* Initialize field of video device */
+ vbd->release = video_device_release_empty;
+ vbd->fops = &vpbe_fops;
+ vbd->ioctl_ops = &vpbe_ioctl_ops;
+ vbd->minor = -1;
+ vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
+ vbd->lock = &vpbe_display_layer->opslock;
+
+ if (disp_dev->vpbe_dev->current_timings.timings_type &
+ VPBE_ENC_STD) {
+ vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
+ vbd->current_norm =
+ disp_dev->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);
+
+ vpbe_display_layer->device_id = i;
+
+ vpbe_display_layer->layer_info.id =
+ ((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
+
+ /* Initialize prio member of layer object */
+ v4l2_prio_init(&vpbe_display_layer->prio);
+
+ return 0;
+}
+
+static __devinit int register_device(struct vpbe_layer *vpbe_display_layer,
+ struct vpbe_display *disp_dev,
+ struct platform_device *pdev) {
+ int err;
+
+ v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
+ "Trying to register VPBE display device.\n");
+ v4l2_info(&disp_dev->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,
+ -1);
+ if (err)
+ return -ENODEV;
+
+ vpbe_display_layer->disp_dev = disp_dev;
+ /* set the driver data in platform device */
+ platform_set_drvdata(pdev, disp_dev);
+ video_set_drvdata(&vpbe_display_layer->video_dev,
+ vpbe_display_layer);
+
+ 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 __devinit int vpbe_display_probe(struct platform_device *pdev)
+{
+ struct vpbe_layer *vpbe_display_layer;
+ struct vpbe_display *disp_dev;
+ struct resource *res = NULL;
+ int k;
+ int i;
+ int err;
+ 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;
+ }
+
+ spin_lock_init(&disp_dev->dma_queue_lock);
+ /*
+ * 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, disp_dev,
+ vpbe_device_get);
+ if (err < 0)
+ return err;
+ /* Initialize the vpbe display controller */
+ if (NULL != disp_dev->vpbe_dev->ops.initialize) {
+ err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
+ disp_dev->vpbe_dev);
+ if (err) {
+ v4l2_err(&disp_dev->vpbe_dev->v4l2_dev,
+ "Error initing vpbe\n");
+ err = -ENOMEM;
+ goto probe_out;
+ }
+ }
+
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ if (init_vpbe_layer(i, disp_dev, pdev)) {
+ err = -ENODEV;
+ goto probe_out;
+ }
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ v4l2_err(&disp_dev->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(&disp_dev->vpbe_dev->v4l2_dev,
+ "Unable to request interrupt\n");
+ err = -ENODEV;
+ goto probe_out;
+ }
+
+ for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
+ if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
+ err = -ENODEV;
+ goto probe_out_irq;
+ }
+ }
+
+ printk(KERN_DEBUG "Successfully completed the probing of vpbe v4l2 device\n");
+ return 0;
+
+probe_out_irq:
+ free_irq(res->start, disp_dev);
+probe_out:
+ for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
+ /* Get the pointer to the layer object */
+ vpbe_display_layer = disp_dev->dev[k];
+ /* Unregister video device */
+ if (vpbe_display_layer) {
+ video_unregister_device(
+ &vpbe_display_layer->video_dev);
+ kfree(disp_dev->dev[k]);
+ }
+ }
+ kfree(disp_dev);
+ return err;
+}
+
+/*
+ * vpbe_display_remove()
+ * It un-register hardware layer from V4L2 driver
+ */
+static int vpbe_display_remove(struct platform_device *pdev)
+{
+ struct vpbe_layer *vpbe_display_layer;
+ struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
+ struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
+ struct resource *res;
+ int i;
+
+ 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);
+
+ }
+ 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),
+};
+
+module_platform_driver(vpbe_display_driver);
+
+MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");

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