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path: root/drivers/media/video/omap/omap_vout_vrfb.c
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Diffstat (limited to 'drivers/media/video/omap/omap_vout_vrfb.c')
-rw-r--r--drivers/media/video/omap/omap_vout_vrfb.c390
1 files changed, 0 insertions, 390 deletions
diff --git a/drivers/media/video/omap/omap_vout_vrfb.c b/drivers/media/video/omap/omap_vout_vrfb.c
deleted file mode 100644
index 4be26abf6c..0000000
--- a/drivers/media/video/omap/omap_vout_vrfb.c
+++ /dev/null
@@ -1,390 +0,0 @@
-/*
- * omap_vout_vrfb.c
- *
- * Copyright (C) 2010 Texas Instruments.
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- *
- */
-
-#include <linux/sched.h>
-#include <linux/platform_device.h>
-#include <linux/videodev2.h>
-
-#include <media/videobuf-dma-contig.h>
-#include <media/v4l2-device.h>
-
-#include <plat/dma.h>
-#include <plat/vrfb.h>
-
-#include "omap_voutdef.h"
-#include "omap_voutlib.h"
-
-/*
- * Function for allocating video buffers
- */
-static int omap_vout_allocate_vrfb_buffers(struct omap_vout_device *vout,
- unsigned int *count, int startindex)
-{
- int i, j;
-
- for (i = 0; i < *count; i++) {
- if (!vout->smsshado_virt_addr[i]) {
- vout->smsshado_virt_addr[i] =
- omap_vout_alloc_buffer(vout->smsshado_size,
- &vout->smsshado_phy_addr[i]);
- }
- if (!vout->smsshado_virt_addr[i] && startindex != -1) {
- if (V4L2_MEMORY_MMAP == vout->memory && i >= startindex)
- break;
- }
- if (!vout->smsshado_virt_addr[i]) {
- for (j = 0; j < i; j++) {
- omap_vout_free_buffer(
- vout->smsshado_virt_addr[j],
- vout->smsshado_size);
- vout->smsshado_virt_addr[j] = 0;
- vout->smsshado_phy_addr[j] = 0;
- }
- *count = 0;
- return -ENOMEM;
- }
- memset((void *) vout->smsshado_virt_addr[i], 0,
- vout->smsshado_size);
- }
- return 0;
-}
-
-/*
- * Wakes up the application once the DMA transfer to VRFB space is completed.
- */
-static void omap_vout_vrfb_dma_tx_callback(int lch, u16 ch_status, void *data)
-{
- struct vid_vrfb_dma *t = (struct vid_vrfb_dma *) data;
-
- t->tx_status = 1;
- wake_up_interruptible(&t->wait);
-}
-
-/*
- * Free VRFB buffers
- */
-void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout)
-{
- int j;
-
- for (j = 0; j < VRFB_NUM_BUFS; j++) {
- omap_vout_free_buffer(vout->smsshado_virt_addr[j],
- vout->smsshado_size);
- vout->smsshado_virt_addr[j] = 0;
- vout->smsshado_phy_addr[j] = 0;
- }
-}
-
-int omap_vout_setup_vrfb_bufs(struct platform_device *pdev, int vid_num,
- bool static_vrfb_allocation)
-{
- int ret = 0, i, j;
- struct omap_vout_device *vout;
- struct video_device *vfd;
- int image_width, image_height;
- int vrfb_num_bufs = VRFB_NUM_BUFS;
- struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
- struct omap2video_device *vid_dev =
- container_of(v4l2_dev, struct omap2video_device, v4l2_dev);
-
- vout = vid_dev->vouts[vid_num];
- vfd = vout->vfd;
-
- for (i = 0; i < VRFB_NUM_BUFS; i++) {
- if (omap_vrfb_request_ctx(&vout->vrfb_context[i])) {
- dev_info(&pdev->dev, ": VRFB allocation failed\n");
- for (j = 0; j < i; j++)
- omap_vrfb_release_ctx(&vout->vrfb_context[j]);
- ret = -ENOMEM;
- goto free_buffers;
- }
- }
-
- /* Calculate VRFB memory size */
- /* allocate for worst case size */
- image_width = VID_MAX_WIDTH / TILE_SIZE;
- if (VID_MAX_WIDTH % TILE_SIZE)
- image_width++;
-
- image_width = image_width * TILE_SIZE;
- image_height = VID_MAX_HEIGHT / TILE_SIZE;
-
- if (VID_MAX_HEIGHT % TILE_SIZE)
- image_height++;
-
- image_height = image_height * TILE_SIZE;
- vout->smsshado_size = PAGE_ALIGN(image_width * image_height * 2 * 2);
-
- /*
- * Request and Initialize DMA, for DMA based VRFB transfer
- */
- vout->vrfb_dma_tx.dev_id = OMAP_DMA_NO_DEVICE;
- vout->vrfb_dma_tx.dma_ch = -1;
- vout->vrfb_dma_tx.req_status = DMA_CHAN_ALLOTED;
- ret = omap_request_dma(vout->vrfb_dma_tx.dev_id, "VRFB DMA TX",
- omap_vout_vrfb_dma_tx_callback,
- (void *) &vout->vrfb_dma_tx, &vout->vrfb_dma_tx.dma_ch);
- if (ret < 0) {
- vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
- dev_info(&pdev->dev, ": failed to allocate DMA Channel for"
- " video%d\n", vfd->minor);
- }
- init_waitqueue_head(&vout->vrfb_dma_tx.wait);
-
- /* statically allocated the VRFB buffer is done through
- commands line aruments */
- if (static_vrfb_allocation) {
- if (omap_vout_allocate_vrfb_buffers(vout, &vrfb_num_bufs, -1)) {
- ret = -ENOMEM;
- goto release_vrfb_ctx;
- }
- vout->vrfb_static_allocation = 1;
- }
- return 0;
-
-release_vrfb_ctx:
- for (j = 0; j < VRFB_NUM_BUFS; j++)
- omap_vrfb_release_ctx(&vout->vrfb_context[j]);
-free_buffers:
- omap_vout_free_buffers(vout);
-
- return ret;
-}
-
-/*
- * Release the VRFB context once the module exits
- */
-void omap_vout_release_vrfb(struct omap_vout_device *vout)
-{
- int i;
-
- for (i = 0; i < VRFB_NUM_BUFS; i++)
- omap_vrfb_release_ctx(&vout->vrfb_context[i]);
-
- if (vout->vrfb_dma_tx.req_status == DMA_CHAN_ALLOTED) {
- vout->vrfb_dma_tx.req_status = DMA_CHAN_NOT_ALLOTED;
- omap_free_dma(vout->vrfb_dma_tx.dma_ch);
- }
-}
-
-/*
- * Allocate the buffers for the VRFB space. Data is copied from V4L2
- * buffers to the VRFB buffers using the DMA engine.
- */
-int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout,
- unsigned int *count, unsigned int startindex)
-{
- int i;
- bool yuv_mode;
-
- if (!is_rotation_enabled(vout))
- return 0;
-
- /* If rotation is enabled, allocate memory for VRFB space also */
- *count = *count > VRFB_NUM_BUFS ? VRFB_NUM_BUFS : *count;
-
- /* Allocate the VRFB buffers only if the buffers are not
- * allocated during init time.
- */
- if (!vout->vrfb_static_allocation)
- if (omap_vout_allocate_vrfb_buffers(vout, count, startindex))
- return -ENOMEM;
-
- if (vout->dss_mode == OMAP_DSS_COLOR_YUV2 ||
- vout->dss_mode == OMAP_DSS_COLOR_UYVY)
- yuv_mode = true;
- else
- yuv_mode = false;
-
- for (i = 0; i < *count; i++)
- omap_vrfb_setup(&vout->vrfb_context[i],
- vout->smsshado_phy_addr[i], vout->pix.width,
- vout->pix.height, vout->bpp, yuv_mode);
-
- return 0;
-}
-
-int omap_vout_prepare_vrfb(struct omap_vout_device *vout,
- struct videobuf_buffer *vb)
-{
- dma_addr_t dmabuf;
- struct vid_vrfb_dma *tx;
- enum dss_rotation rotation;
- u32 dest_frame_index = 0, src_element_index = 0;
- u32 dest_element_index = 0, src_frame_index = 0;
- u32 elem_count = 0, frame_count = 0, pixsize = 2;
-
- if (!is_rotation_enabled(vout))
- return 0;
-
- dmabuf = vout->buf_phy_addr[vb->i];
- /* If rotation is enabled, copy input buffer into VRFB
- * memory space using DMA. We are copying input buffer
- * into VRFB memory space of desired angle and DSS will
- * read image VRFB memory for 0 degree angle
- */
- pixsize = vout->bpp * vout->vrfb_bpp;
- /*
- * DMA transfer in double index mode
- */
-
- /* Frame index */
- dest_frame_index = ((MAX_PIXELS_PER_LINE * pixsize) -
- (vout->pix.width * vout->bpp)) + 1;
-
- /* Source and destination parameters */
- src_element_index = 0;
- src_frame_index = 0;
- dest_element_index = 1;
- /* Number of elements per frame */
- elem_count = vout->pix.width * vout->bpp;
- frame_count = vout->pix.height;
- tx = &vout->vrfb_dma_tx;
- tx->tx_status = 0;
- omap_set_dma_transfer_params(tx->dma_ch, OMAP_DMA_DATA_TYPE_S32,
- (elem_count / 4), frame_count, OMAP_DMA_SYNC_ELEMENT,
- tx->dev_id, 0x0);
- /* src_port required only for OMAP1 */
- omap_set_dma_src_params(tx->dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
- dmabuf, src_element_index, src_frame_index);
- /*set dma source burst mode for VRFB */
- omap_set_dma_src_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
- rotation = calc_rotation(vout);
-
- /* dest_port required only for OMAP1 */
- omap_set_dma_dest_params(tx->dma_ch, 0, OMAP_DMA_AMODE_DOUBLE_IDX,
- vout->vrfb_context[vb->i].paddr[0], dest_element_index,
- dest_frame_index);
- /*set dma dest burst mode for VRFB */
- omap_set_dma_dest_burst_mode(tx->dma_ch, OMAP_DMA_DATA_BURST_16);
- omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE, 0x20, 0);
-
- omap_start_dma(tx->dma_ch);
- interruptible_sleep_on_timeout(&tx->wait, VRFB_TX_TIMEOUT);
-
- if (tx->tx_status == 0) {
- omap_stop_dma(tx->dma_ch);
- return -EINVAL;
- }
- /* Store buffers physical address into an array. Addresses
- * from this array will be used to configure DSS */
- vout->queued_buf_addr[vb->i] = (u8 *)
- vout->vrfb_context[vb->i].paddr[rotation];
- return 0;
-}
-
-/*
- * Calculate the buffer offsets from which the streaming should
- * start. This offset calculation is mainly required because of
- * the VRFB 32 pixels alignment with rotation.
- */
-void omap_vout_calculate_vrfb_offset(struct omap_vout_device *vout)
-{
- enum dss_rotation rotation;
- bool mirroring = vout->mirror;
- struct v4l2_rect *crop = &vout->crop;
- struct v4l2_pix_format *pix = &vout->pix;
- int *cropped_offset = &vout->cropped_offset;
- int vr_ps = 1, ps = 2, temp_ps = 2;
- int offset = 0, ctop = 0, cleft = 0, line_length = 0;
-
- rotation = calc_rotation(vout);
-
- if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
- V4L2_PIX_FMT_UYVY == pix->pixelformat) {
- if (is_rotation_enabled(vout)) {
- /*
- * ps - Actual pixel size for YUYV/UYVY for
- * VRFB/Mirroring is 4 bytes
- * vr_ps - Virtually pixel size for YUYV/UYVY is
- * 2 bytes
- */
- ps = 4;
- vr_ps = 2;
- } else {
- ps = 2; /* otherwise the pixel size is 2 byte */
- }
- } else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat) {
- ps = 4;
- } else if (V4L2_PIX_FMT_RGB24 == pix->pixelformat) {
- ps = 3;
- }
- vout->ps = ps;
- vout->vr_ps = vr_ps;
-
- if (is_rotation_enabled(vout)) {
- line_length = MAX_PIXELS_PER_LINE;
- ctop = (pix->height - crop->height) - crop->top;
- cleft = (pix->width - crop->width) - crop->left;
- } else {
- line_length = pix->width;
- }
- vout->line_length = line_length;
- switch (rotation) {
- case dss_rotation_90_degree:
- offset = vout->vrfb_context[0].yoffset *
- vout->vrfb_context[0].bytespp;
- temp_ps = ps / vr_ps;
- if (mirroring == 0) {
- *cropped_offset = offset + line_length *
- temp_ps * cleft + crop->top * temp_ps;
- } else {
- *cropped_offset = offset + line_length * temp_ps *
- cleft + crop->top * temp_ps + (line_length *
- ((crop->width / (vr_ps)) - 1) * ps);
- }
- break;
- case dss_rotation_180_degree:
- offset = ((MAX_PIXELS_PER_LINE * vout->vrfb_context[0].yoffset *
- vout->vrfb_context[0].bytespp) +
- (vout->vrfb_context[0].xoffset *
- vout->vrfb_context[0].bytespp));
- if (mirroring == 0) {
- *cropped_offset = offset + (line_length * ps * ctop) +
- (cleft / vr_ps) * ps;
-
- } else {
- *cropped_offset = offset + (line_length * ps * ctop) +
- (cleft / vr_ps) * ps + (line_length *
- (crop->height - 1) * ps);
- }
- break;
- case dss_rotation_270_degree:
- offset = MAX_PIXELS_PER_LINE * vout->vrfb_context[0].xoffset *
- vout->vrfb_context[0].bytespp;
- temp_ps = ps / vr_ps;
- if (mirroring == 0) {
- *cropped_offset = offset + line_length *
- temp_ps * crop->left + ctop * ps;
- } else {
- *cropped_offset = offset + line_length *
- temp_ps * crop->left + ctop * ps +
- (line_length * ((crop->width / vr_ps) - 1) *
- ps);
- }
- break;
- case dss_rotation_0_degree:
- if (mirroring == 0) {
- *cropped_offset = (line_length * ps) *
- crop->top + (crop->left / vr_ps) * ps;
- } else {
- *cropped_offset = (line_length * ps) *
- crop->top + (crop->left / vr_ps) * ps +
- (line_length * (crop->height - 1) * ps);
- }
- break;
- default:
- *cropped_offset = (line_length * ps * crop->top) /
- vr_ps + (crop->left * ps) / vr_ps +
- ((crop->width / vr_ps) - 1) * ps;
- break;
- }
-}
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