diff options
author | archit taneja <archit@ti.com> | 2011-06-14 03:54:47 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:56:06 -0300 |
commit | 445e258fa286cb83818b731ef4075a8cc183f2f3 (patch) | |
tree | cf76fc42c53bab44c76e012cc8635b01a1ab0017 /drivers/media | |
parent | b366888a9020f933bdab8f15f8d4a63e988ce6b3 (diff) | |
download | linux-445e258fa286cb83818b731ef4075a8cc183f2f3.tar.gz linux-445e258fa286cb83818b731ef4075a8cc183f2f3.tar.bz2 linux-445e258fa286cb83818b731ef4075a8cc183f2f3.zip |
[media] OMAP_VOUT: Create separate file for VRFB related API's
Introduce omap_vout_vrfb.c and omap_vout_vrfb.h, for all VRFB related API's,
making OMAP_VOUT driver independent from VRFB. This is required for OMAP4 DSS,
since OMAP4 doesn't have VRFB block.
Added new enum vout_rotation_type and "rotation_type" member to omapvideo_info,
this is initialized based on the arch type in omap_vout_probe. The rotation_type
var is now used to choose between vrfb and non-vrfb calls.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/video/omap/Kconfig | 7 | ||||
-rw-r--r-- | drivers/media/video/omap/Makefile | 1 | ||||
-rw-r--r-- | drivers/media/video/omap/omap_vout.c | 455 | ||||
-rw-r--r-- | drivers/media/video/omap/omap_vout_vrfb.c | 390 | ||||
-rw-r--r-- | drivers/media/video/omap/omap_vout_vrfb.h | 40 | ||||
-rw-r--r-- | drivers/media/video/omap/omap_voutdef.h | 16 |
6 files changed, 537 insertions, 372 deletions
diff --git a/drivers/media/video/omap/Kconfig b/drivers/media/video/omap/Kconfig index e63233fd2aaa..390ab094f9f2 100644 --- a/drivers/media/video/omap/Kconfig +++ b/drivers/media/video/omap/Kconfig @@ -1,11 +1,14 @@ +config VIDEO_OMAP2_VOUT_VRFB + bool + config VIDEO_OMAP2_VOUT tristate "OMAP2/OMAP3 V4L2-Display driver" depends on ARCH_OMAP2 || ARCH_OMAP3 select VIDEOBUF_GEN select VIDEOBUF_DMA_CONTIG select OMAP2_DSS - select OMAP2_VRAM - select OMAP2_VRFB + select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3 + select VIDEO_OMAP2_VOUT_VRFB if VIDEO_OMAP2_VOUT && OMAP2_VRFB default n ---help--- V4L2 Display driver support for OMAP2/3 based boards. diff --git a/drivers/media/video/omap/Makefile b/drivers/media/video/omap/Makefile index b28788070ae1..fc410b438f7d 100644 --- a/drivers/media/video/omap/Makefile +++ b/drivers/media/video/omap/Makefile @@ -4,4 +4,5 @@ # OMAP2/3 Display driver omap-vout-y := omap_vout.o omap_voutlib.o +omap-vout-$(CONFIG_VIDEO_OMAP2_VOUT_VRFB) += omap_vout_vrfb.o obj-$(CONFIG_VIDEO_OMAP2_VOUT) += omap-vout.o diff --git a/drivers/media/video/omap/omap_vout.c b/drivers/media/video/omap/omap_vout.c index 8d69f287ad08..56b22b9356a5 100644 --- a/drivers/media/video/omap/omap_vout.c +++ b/drivers/media/video/omap/omap_vout.c @@ -48,6 +48,7 @@ #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"); @@ -143,41 +144,6 @@ static const struct v4l2_fmtdesc omap_formats[] = { #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 */ static int omap_vout_try_format(struct v4l2_pix_format *pix) @@ -270,36 +236,9 @@ static u32 omap_vout_uservirt_to_phys(u32 virtp) } /* - * 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; @@ -316,52 +255,6 @@ static void omap_vout_free_buffers(struct omap_vout_device *vout) } /* - * 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. * Convert to 0, 1, 2 and 3 respectively for DSS @@ -390,124 +283,38 @@ static int v4l2_rot_to_dss_rot(int v4l2_rotation, 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; } @@ -845,6 +652,7 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, 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; @@ -857,13 +665,10 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, 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; @@ -887,8 +692,11 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, 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( @@ -896,6 +704,7 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, vout->smsshado_size); vout->smsshado_virt_addr[j] = 0; vout->smsshado_phy_addr[j] = 0; + } } } vout->buf_virt_addr[i] = virt_addr; @@ -908,9 +717,9 @@ static int omap_vout_buffer_setup(struct videobuf_queue *q, unsigned int *count, /* * 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; @@ -925,20 +734,6 @@ static void omap_vout_free_allbuffers(struct omap_vout_device *vout) 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; } @@ -950,16 +745,11 @@ static void omap_vout_free_allbuffers(struct omap_vout_device *vout) * 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; @@ -981,63 +771,10 @@ static int omap_vout_buffer_prepare(struct videobuf_queue *q, 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; } /* @@ -1189,7 +926,15 @@ static int omap_vout_release(struct file *file) "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 @@ -1616,9 +1361,17 @@ static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a) 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); @@ -1674,6 +1427,11 @@ static int vidioc_s_ctrl(struct file *file, void *fh, struct v4l2_control *a) 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); @@ -2119,7 +1877,8 @@ static int __init omap_vout_setup_video_data(struct omap_vout_device *vout) 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; @@ -2151,17 +1910,15 @@ static int __init omap_vout_setup_video_bufs(struct platform_device *pdev, 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; @@ -2178,66 +1935,16 @@ static int __init omap_vout_setup_video_bufs(struct platform_device *pdev, } } - 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++) { @@ -2280,6 +1987,10 @@ static int __init omap_vout_create_video_devices(struct platform_device *pdev) 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) { @@ -2313,7 +2024,8 @@ static int __init omap_vout_create_video_devices(struct platform_device *pdev) 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); @@ -2334,11 +2046,13 @@ success: 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)) { /* @@ -2354,14 +2068,15 @@ static void omap_vout_cleanup_device(struct omap_vout_device *vout) 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); } diff --git a/drivers/media/video/omap/omap_vout_vrfb.c b/drivers/media/video/omap/omap_vout_vrfb.c new file mode 100644 index 000000000000..ebebcac49225 --- /dev/null +++ b/drivers/media/video/omap/omap_vout_vrfb.c @@ -0,0 +1,390 @@ +/* + * 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; + } +} diff --git a/drivers/media/video/omap/omap_vout_vrfb.h b/drivers/media/video/omap/omap_vout_vrfb.h new file mode 100644 index 000000000000..ffde741e0590 --- /dev/null +++ b/drivers/media/video/omap/omap_vout_vrfb.h @@ -0,0 +1,40 @@ +/* + * omap_vout_vrfb.h + * + * 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. + * + */ + +#ifndef OMAP_VOUT_VRFB_H +#define OMAP_VOUT_VRFB_H + +#ifdef CONFIG_VIDEO_OMAP2_VOUT_VRFB +void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout); +int omap_vout_setup_vrfb_bufs(struct platform_device *pdev, int vid_num, + u32 static_vrfb_allocation); +void omap_vout_release_vrfb(struct omap_vout_device *vout); +int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout, + unsigned int *count, unsigned int startindex); +int omap_vout_prepare_vrfb(struct omap_vout_device *vout, + struct videobuf_buffer *vb); +void omap_vout_calculate_vrfb_offset(struct omap_vout_device *vout); +#else +void omap_vout_free_vrfb_buffers(struct omap_vout_device *vout) { } +int omap_vout_setup_vrfb_bufs(struct platform_device *pdev, int vid_num, + u32 static_vrfb_allocation) + { return 0; } +void omap_vout_release_vrfb(struct omap_vout_device *vout) { } +int omap_vout_vrfb_buffer_setup(struct omap_vout_device *vout, + unsigned int *count, unsigned int startindex) + { return 0; } +int omap_vout_prepare_vrfb(struct omap_vout_device *vout, + struct videobuf_buffer *vb) + { return 0; } +void omap_vout_calculate_vrfb_offset(struct omap_vout_device *vout) { } +#endif + +#endif diff --git a/drivers/media/video/omap/omap_voutdef.h b/drivers/media/video/omap/omap_voutdef.h index 1ef3ed22660c..d793501cafcc 100644 --- a/drivers/media/video/omap/omap_voutdef.h +++ b/drivers/media/video/omap/omap_voutdef.h @@ -12,6 +12,7 @@ #define OMAP_VOUTDEF_H #include <video/omapdss.h> +#include <plat/vrfb.h> #define YUYV_BPP 2 #define RGB565_BPP 2 @@ -62,6 +63,18 @@ enum dss_rotation { dss_rotation_180_degree = 2, dss_rotation_270_degree = 3, }; + +/* Enum for choosing rotation type for vout + * DSS2 doesn't understand no rotation as an + * option while V4L2 driver doesn't support + * rotation in the case where VRFB is not built in + * the kernel + */ +enum vout_rotaion_type { + VOUT_ROT_NONE = 0, + VOUT_ROT_VRFB = 1, +}; + /* * This structure is used to store the DMA transfer parameters * for VRFB hidden buffer @@ -78,6 +91,7 @@ struct omapvideo_info { int id; int num_overlays; struct omap_overlay *overlays[MAX_OVLS]; + enum vout_rotaion_type rotation_type; }; struct omap2video_device { @@ -206,4 +220,6 @@ static inline int calc_rotation(const struct omap_vout_device *vout) return dss_rotation_180_degree; } } + +void omap_vout_free_buffers(struct omap_vout_device *vout); #endif /* ifndef OMAP_VOUTDEF_H */ |