#include "omap_voutlib.h"
#include "omap_voutdef.h"
+#include "omap_vout_vrfb.h"
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("OMAP Video for Linux Video out driver");
#define NUM_OUTPUT_FORMATS (ARRAY_SIZE(omap_formats))
-/*
- * 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;
-}
-
/*
* Try format
*/
return physp;
}
-/*
- * 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);
-}
-
-/*
- * Release the VRFB context once the module exits
- */
-static 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);
- }
-}
-
/*
* Free the V4L2 buffers
*/
-static void omap_vout_free_buffers(struct omap_vout_device *vout)
+void omap_vout_free_buffers(struct omap_vout_device *vout)
{
int i, numbuffers;
}
}
-/*
- * Free VRFB buffers
- */
-static 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;
- }
-}
-
-/*
- * Allocate the buffers for the VRFB space. Data is copied from V4L2
- * buffers to the VRFB buffers using the DMA engine.
- */
-static int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout,
- unsigned int *count, unsigned int startindex)
-{
- int i;
- bool yuv_mode;
-
- /* Allocate the VRFB buffers only if the buffers are not
- * allocated during init time.
- */
- if ((is_rotation_enabled(vout)) && !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;
-}
-
/*
* Convert V4L2 rotation to DSS rotation
* V4L2 understand 0, 90, 180, 270.
return ret;
}
-/*
- * 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.
- */
static int omap_vout_calculate_offset(struct omap_vout_device *vout)
{
- struct omap_overlay *ovl;
- enum dss_rotation rotation;
struct omapvideo_info *ovid;
- bool mirroring = vout->mirror;
- struct omap_dss_device *cur_display;
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;
+ int ps = 2, line_length = 0;
ovid = &vout->vid_info;
- ovl = ovid->overlays[0];
- /* get the display device attached to the overlay */
- if (!ovl->manager || !ovl->manager->device)
- return -1;
- cur_display = ovl->manager->device;
- rotation = calc_rotation(vout);
+ if (ovid->rotation_type == VOUT_ROT_VRFB) {
+ omap_vout_calculate_vrfb_offset(vout);
+ } else {
+ vout->line_length = line_length = pix->width;
- 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
- */
+ if (V4L2_PIX_FMT_YUYV == pix->pixelformat ||
+ V4L2_PIX_FMT_UYVY == pix->pixelformat)
+ ps = 2;
+ else if (V4L2_PIX_FMT_RGB32 == pix->pixelformat)
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 if (V4L2_PIX_FMT_RGB24 == pix->pixelformat)
+ ps = 3;
- } 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;
+ vout->ps = ps;
+
+ *cropped_offset = (line_length * ps) *
+ crop->top + crop->left * ps;
}
+
v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "%s Offset:%x\n",
- __func__, *cropped_offset);
+ __func__, vout->cropped_offset);
+
return 0;
}
int startindex = 0, i, j;
u32 phy_addr = 0, virt_addr = 0;
struct omap_vout_device *vout = q->priv_data;
+ struct omapvideo_info *ovid = &vout->vid_info;
if (!vout)
return -EINVAL;
if (V4L2_MEMORY_MMAP == vout->memory && *count < startindex)
*count = startindex;
- if ((is_rotation_enabled(vout)) && *count > VRFB_NUM_BUFS)
- *count = VRFB_NUM_BUFS;
-
- /* If rotation is enabled, allocate memory for VRFB space also */
- if (is_rotation_enabled(vout))
+ if (ovid->rotation_type == VOUT_ROT_VRFB) {
if (omap_vout_vrfb_buffer_setup(vout, count, startindex))
return -ENOMEM;
+ }
if (V4L2_MEMORY_MMAP != vout->memory)
return 0;
virt_addr = omap_vout_alloc_buffer(vout->buffer_size,
&phy_addr);
if (!virt_addr) {
- if (!is_rotation_enabled(vout))
+ if (ovid->rotation_type == VOUT_ROT_NONE) {
break;
+ } else {
+ if (!is_rotation_enabled(vout))
+ break;
/* Free the VRFB buffers if no space for V4L2 buffers */
for (j = i; j < *count; j++) {
omap_vout_free_buffer(
vout->smsshado_size);
vout->smsshado_virt_addr[j] = 0;
vout->smsshado_phy_addr[j] = 0;
+ }
}
}
vout->buf_virt_addr[i] = virt_addr;
/*
* Free the V4L2 buffers additionally allocated than default
- * number of buffers and free all the VRFB buffers
+ * number of buffers
*/
-static void omap_vout_free_allbuffers(struct omap_vout_device *vout)
+static void omap_vout_free_extra_buffers(struct omap_vout_device *vout)
{
int num_buffers = 0, i;
vout->buf_virt_addr[i] = 0;
vout->buf_phy_addr[i] = 0;
}
- /* Free the VRFB buffers only if they are allocated
- * during reqbufs. Don't free if init time allocated
- */
- if (!vout->vrfb_static_allocation) {
- for (i = 0; i < VRFB_NUM_BUFS; i++) {
- if (vout->smsshado_virt_addr[i]) {
- omap_vout_free_buffer(
- vout->smsshado_virt_addr[i],
- vout->smsshado_size);
- vout->smsshado_virt_addr[i] = 0;
- vout->smsshado_phy_addr[i] = 0;
- }
- }
- }
vout->buffer_allocated = num_buffers;
}
* buffer into VRFB memory space before giving it to the DSS.
*/
static int omap_vout_buffer_prepare(struct videobuf_queue *q,
- struct videobuf_buffer *vb,
- enum v4l2_field field)
+ struct videobuf_buffer *vb,
+ enum v4l2_field field)
{
- dma_addr_t dmabuf;
- struct vid_vrfb_dma *tx;
- enum dss_rotation rotation;
struct omap_vout_device *vout = q->priv_data;
- 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;
+ struct omapvideo_info *ovid = &vout->vid_info;
if (VIDEOBUF_NEEDS_INIT == vb->state) {
vb->width = vout->pix.width;
vout->queued_buf_addr[vb->i] = (u8 *)vout->buf_phy_addr[vb->i];
}
- if (!is_rotation_enabled(vout))
+ if (ovid->rotation_type == VOUT_ROT_VRFB)
+ return omap_vout_prepare_vrfb(vout, vb);
+ else
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;
}
/*
"Unable to apply changes\n");
/* Free all buffers */
- omap_vout_free_allbuffers(vout);
+ omap_vout_free_extra_buffers(vout);
+
+ /* Free the VRFB buffers only if they are allocated
+ * during reqbufs. Don't free if init time allocated
+ */
+ if (ovid->rotation_type == VOUT_ROT_VRFB) {
+ if (!vout->vrfb_static_allocation)
+ omap_vout_free_vrfb_buffers(vout);
+ }
videobuf_mmap_free(q);
/* Even if apply changes fails we should continue
switch (a->id) {
case V4L2_CID_ROTATE:
{
+ struct omapvideo_info *ovid;
int rotation = a->value;
+ ovid = &vout->vid_info;
+
mutex_lock(&vout->lock);
+ if (rotation && ovid->rotation_type == VOUT_ROT_NONE) {
+ mutex_unlock(&vout->lock);
+ ret = -ERANGE;
+ break;
+ }
if (rotation && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
mutex_unlock(&vout->lock);
ovl = ovid->overlays[0];
mutex_lock(&vout->lock);
+ if (mirror && ovid->rotation_type == VOUT_ROT_NONE) {
+ mutex_unlock(&vout->lock);
+ ret = -ERANGE;
+ break;
+ }
if (mirror && vout->pix.pixelformat == V4L2_PIX_FMT_RGB24) {
mutex_unlock(&vout->lock);
vout->mirror = 0;
vout->control[2].id = V4L2_CID_HFLIP;
vout->control[2].value = 0;
- vout->vrfb_bpp = 2;
+ if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
+ vout->vrfb_bpp = 2;
control[1].id = V4L2_CID_BG_COLOR;
control[1].value = 0;
int vid_num)
{
u32 numbuffers;
- int ret = 0, i, j;
- int image_width, image_height;
- struct video_device *vfd;
+ int ret = 0, i;
+ struct omapvideo_info *ovid;
struct omap_vout_device *vout;
- int static_vrfb_allocation = 0, 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;
+ ovid = &vout->vid_info;
numbuffers = (vid_num == 0) ? video1_numbuffers : video2_numbuffers;
vout->buffer_size = (vid_num == 0) ? video1_bufsize : video2_bufsize;
}
}
- 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;
- }
- }
vout->cropped_offset = 0;
- /* 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);
-
- /* Allocate VRFB buffers if selected through bootargs */
- static_vrfb_allocation = (vid_num == 0) ?
- vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
-
- /* 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;
+ if (ovid->rotation_type == VOUT_ROT_VRFB) {
+ int static_vrfb_allocation = (vid_num == 0) ?
+ vid1_static_vrfb_alloc : vid2_static_vrfb_alloc;
+ ret = omap_vout_setup_vrfb_bufs(pdev, vid_num,
+ static_vrfb_allocation);
}
- return 0;
-release_vrfb_ctx:
- for (j = 0; j < VRFB_NUM_BUFS; j++)
- omap_vrfb_release_ctx(&vout->vrfb_context[j]);
+ return ret;
free_buffers:
for (i = 0; i < numbuffers; i++) {
vout->vid_info.num_overlays = 1;
vout->vid_info.id = k + 1;
+ /* Set VRFB as rotation_type for omap2 and omap3 */
+ if (cpu_is_omap24xx() || cpu_is_omap34xx())
+ vout->vid_info.rotation_type = VOUT_ROT_VRFB;
+
/* Setup the default configuration for the video devices
*/
if (omap_vout_setup_video_data(vout) != 0) {
goto success;
error2:
- omap_vout_release_vrfb(vout);
+ if (vout->vid_info.rotation_type == VOUT_ROT_VRFB)
+ omap_vout_release_vrfb(vout);
omap_vout_free_buffers(vout);
error1:
video_device_release(vfd);
static void omap_vout_cleanup_device(struct omap_vout_device *vout)
{
struct video_device *vfd;
+ struct omapvideo_info *ovid;
if (!vout)
return;
vfd = vout->vfd;
+ ovid = &vout->vid_info;
if (vfd) {
if (!video_is_registered(vfd)) {
/*
video_unregister_device(vfd);
}
}
-
- omap_vout_release_vrfb(vout);
+ if (ovid->rotation_type == VOUT_ROT_VRFB) {
+ omap_vout_release_vrfb(vout);
+ /* Free the VRFB buffer if allocated
+ * init time
+ */
+ if (vout->vrfb_static_allocation)
+ omap_vout_free_vrfb_buffers(vout);
+ }
omap_vout_free_buffers(vout);
- /* Free the VRFB buffer if allocated
- * init time
- */
- if (vout->vrfb_static_allocation)
- omap_vout_free_vrfb_buffers(vout);
kfree(vout);
}
--- /dev/null
+/*
+ * 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,
+ u32 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;
+ }
+}
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff