[media] V4L: sh_mobile_ceu_camera: convert to videobuf2
Convert the sh_mobile_ceu_camera driver to the videobuf2 API. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski
Mauro Carvalho Chehab
parent
8eb4476d44
commit
a616898d6d
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@ -877,7 +877,7 @@ config VIDEO_SH_MOBILE_CSI2
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config VIDEO_SH_MOBILE_CEU
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tristate "SuperH Mobile CEU Interface driver"
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depends on VIDEO_DEV && SOC_CAMERA && HAS_DMA && HAVE_CLK
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select VIDEOBUF_DMA_CONTIG
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select VIDEOBUF2_DMA_CONTIG
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---help---
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This is a v4l2 driver for the SuperH Mobile CEU Interface
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@ -38,7 +38,7 @@
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#include <media/v4l2-dev.h>
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#include <media/soc_camera.h>
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#include <media/sh_mobile_ceu.h>
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#include <media/videobuf-dma-contig.h>
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#include <media/videobuf2-dma-contig.h>
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#include <media/v4l2-mediabus.h>
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#include <media/soc_mediabus.h>
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@ -87,7 +87,8 @@
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/* per video frame buffer */
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struct sh_mobile_ceu_buffer {
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struct videobuf_buffer vb; /* v4l buffer must be first */
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struct vb2_buffer vb; /* v4l buffer must be first */
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struct list_head queue;
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enum v4l2_mbus_pixelcode code;
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};
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@ -99,16 +100,17 @@ struct sh_mobile_ceu_dev {
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void __iomem *base;
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unsigned long video_limit;
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/* lock used to protect videobuf */
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spinlock_t lock;
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spinlock_t lock; /* Protects video buffer lists */
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struct list_head capture;
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struct videobuf_buffer *active;
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struct vb2_buffer *active;
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struct vb2_alloc_ctx *alloc_ctx;
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struct sh_mobile_ceu_info *pdata;
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u32 cflcr;
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enum v4l2_field field;
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int sequence;
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unsigned int image_mode:1;
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unsigned int is_16bit:1;
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@ -133,6 +135,11 @@ struct sh_mobile_ceu_cam {
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enum v4l2_mbus_pixelcode code;
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};
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static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb)
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{
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return container_of(vb, struct sh_mobile_ceu_buffer, vb);
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}
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static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev)
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{
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unsigned long flags;
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@ -205,11 +212,11 @@ static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev)
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/*
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* Videobuf operations
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*/
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static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq,
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unsigned int *count,
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unsigned int *size)
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static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq,
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unsigned int *count, unsigned int *num_planes,
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unsigned long sizes[], void *alloc_ctxs[])
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
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@ -218,39 +225,25 @@ static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq,
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if (bytes_per_line < 0)
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return bytes_per_line;
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*size = bytes_per_line * icd->user_height;
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*num_planes = 1;
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if (0 == *count)
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pcdev->sequence = 0;
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sizes[0] = bytes_per_line * icd->user_height;
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alloc_ctxs[0] = pcdev->alloc_ctx;
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if (!*count)
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*count = 2;
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if (pcdev->video_limit) {
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if (PAGE_ALIGN(*size) * *count > pcdev->video_limit)
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*count = pcdev->video_limit / PAGE_ALIGN(*size);
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if (PAGE_ALIGN(sizes[0]) * *count > pcdev->video_limit)
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*count = pcdev->video_limit / PAGE_ALIGN(sizes[0]);
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}
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dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size);
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dev_dbg(icd->dev.parent, "count=%d, size=%lu\n", *count, sizes[0]);
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return 0;
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}
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static void free_buffer(struct videobuf_queue *vq,
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struct sh_mobile_ceu_buffer *buf)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct device *dev = icd->dev.parent;
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dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
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&buf->vb, buf->vb.baddr, buf->vb.bsize);
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if (in_interrupt())
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BUG();
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videobuf_waiton(vq, &buf->vb, 0, 0);
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videobuf_dma_contig_free(vq, &buf->vb);
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dev_dbg(dev, "%s freed\n", __func__);
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buf->vb.state = VIDEOBUF_NEEDS_INIT;
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}
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#define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */
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#define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */
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#define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */
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@ -309,7 +302,10 @@ static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
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bottom2 = CDBCR;
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}
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phys_addr_top = videobuf_to_dma_contig(pcdev->active);
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/* mem_ops->cookie must not be NULL */
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phys_addr_top = (dma_addr_t)icd->vb2_vidq.mem_ops->cookie(pcdev->
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active->planes[0].mem_priv);
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ceu_write(pcdev, top1, phys_addr_top);
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if (V4L2_FIELD_NONE != pcdev->field) {
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phys_addr_bottom = phys_addr_top + icd->user_width;
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@ -330,87 +326,67 @@ static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
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}
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}
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pcdev->active->state = VIDEOBUF_ACTIVE;
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ceu_write(pcdev, CAPSR, 0x1); /* start capture */
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return ret;
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}
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static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
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struct videobuf_buffer *vb,
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enum v4l2_field field)
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static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq);
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struct sh_mobile_ceu_buffer *buf;
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int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
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icd->current_fmt->host_fmt);
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int ret;
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unsigned long size;
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if (bytes_per_line < 0)
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return bytes_per_line;
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buf = container_of(vb, struct sh_mobile_ceu_buffer, vb);
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buf = to_ceu_vb(vb);
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dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
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vb, vb->baddr, vb->bsize);
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dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
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vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
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/* Added list head initialization on alloc */
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WARN_ON(!list_empty(&vb->queue));
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WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb);
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#ifdef DEBUG
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/*
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* This can be useful if you want to see if we actually fill
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* the buffer with something
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*/
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memset((void *)vb->baddr, 0xaa, vb->bsize);
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if (vb2_plane_vaddr(vb, 0))
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memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0));
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#endif
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BUG_ON(NULL == icd->current_fmt);
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if (buf->code != icd->current_fmt->code ||
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vb->width != icd->user_width ||
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vb->height != icd->user_height ||
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vb->field != field) {
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buf->code = icd->current_fmt->code;
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vb->width = icd->user_width;
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vb->height = icd->user_height;
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vb->field = field;
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vb->state = VIDEOBUF_NEEDS_INIT;
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size = icd->user_height * bytes_per_line;
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if (vb2_plane_size(vb, 0) < size) {
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dev_err(icd->dev.parent, "Buffer too small (%lu < %lu)\n",
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vb2_plane_size(vb, 0), size);
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return -ENOBUFS;
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}
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vb->size = vb->height * bytes_per_line;
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if (0 != vb->baddr && vb->bsize < vb->size) {
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ret = -EINVAL;
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goto out;
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}
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if (vb->state == VIDEOBUF_NEEDS_INIT) {
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ret = videobuf_iolock(vq, vb, NULL);
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if (ret)
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goto fail;
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vb->state = VIDEOBUF_PREPARED;
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}
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vb2_set_plane_payload(vb, 0, size);
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return 0;
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fail:
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free_buffer(vq, buf);
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out:
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return ret;
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}
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/* Called under spinlock_irqsave(&pcdev->lock, ...) */
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static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
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struct videobuf_buffer *vb)
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static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb);
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unsigned long flags;
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dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
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vb, vb->baddr, vb->bsize);
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dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%p %lu\n", __func__,
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vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
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vb->state = VIDEOBUF_QUEUED;
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list_add_tail(&vb->queue, &pcdev->capture);
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spin_lock_irqsave(&pcdev->lock, flags);
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list_add_tail(&buf->queue, &pcdev->capture);
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if (!pcdev->active) {
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/*
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@ -421,13 +397,14 @@ static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
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pcdev->active = vb;
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sh_mobile_ceu_capture(pcdev);
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}
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spin_unlock_irqrestore(&pcdev->lock, flags);
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}
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static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq,
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struct videobuf_buffer *vb)
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static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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unsigned long flags;
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@ -439,53 +416,60 @@ static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq,
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pcdev->active = NULL;
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}
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if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) &&
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!list_empty(&vb->queue)) {
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vb->state = VIDEOBUF_ERROR;
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list_del_init(&vb->queue);
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}
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/* Doesn't hurt also if the list is empty */
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list_del_init(&buf->queue);
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spin_unlock_irqrestore(&pcdev->lock, flags);
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free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb));
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}
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static struct videobuf_queue_ops sh_mobile_ceu_videobuf_ops = {
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.buf_setup = sh_mobile_ceu_videobuf_setup,
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.buf_prepare = sh_mobile_ceu_videobuf_prepare,
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.buf_queue = sh_mobile_ceu_videobuf_queue,
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.buf_release = sh_mobile_ceu_videobuf_release,
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static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb)
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{
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/* This is for locking debugging only */
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INIT_LIST_HEAD(&to_ceu_vb(vb)->queue);
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return 0;
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}
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static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
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.queue_setup = sh_mobile_ceu_videobuf_setup,
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.buf_prepare = sh_mobile_ceu_videobuf_prepare,
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.buf_queue = sh_mobile_ceu_videobuf_queue,
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.buf_cleanup = sh_mobile_ceu_videobuf_release,
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.buf_init = sh_mobile_ceu_videobuf_init,
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.wait_prepare = soc_camera_unlock,
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.wait_finish = soc_camera_lock,
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};
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static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
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{
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struct sh_mobile_ceu_dev *pcdev = data;
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struct videobuf_buffer *vb;
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unsigned long flags;
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struct vb2_buffer *vb;
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int ret;
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spin_lock_irqsave(&pcdev->lock, flags);
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spin_lock(&pcdev->lock);
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vb = pcdev->active;
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if (!vb)
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/* Stale interrupt from a released buffer */
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goto out;
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list_del_init(&vb->queue);
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list_del_init(&to_ceu_vb(vb)->queue);
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if (!list_empty(&pcdev->capture))
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pcdev->active = list_entry(pcdev->capture.next,
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struct videobuf_buffer, queue);
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pcdev->active = &list_entry(pcdev->capture.next,
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struct sh_mobile_ceu_buffer, queue)->vb;
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else
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pcdev->active = NULL;
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vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ?
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VIDEOBUF_ERROR : VIDEOBUF_DONE;
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do_gettimeofday(&vb->ts);
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vb->field_count++;
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wake_up(&vb->done);
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ret = sh_mobile_ceu_capture(pcdev);
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do_gettimeofday(&vb->v4l2_buf.timestamp);
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if (!ret) {
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vb->v4l2_buf.field = pcdev->field;
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vb->v4l2_buf.sequence = pcdev->sequence++;
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}
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vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
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out:
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spin_unlock_irqrestore(&pcdev->lock, flags);
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spin_unlock(&pcdev->lock);
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return IRQ_HANDLED;
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}
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@ -529,9 +513,8 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
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/* make sure active buffer is canceled */
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spin_lock_irqsave(&pcdev->lock, flags);
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if (pcdev->active) {
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list_del(&pcdev->active->queue);
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pcdev->active->state = VIDEOBUF_ERROR;
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wake_up_all(&pcdev->active->done);
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list_del_init(&to_ceu_vb(pcdev->active)->queue);
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vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR);
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pcdev->active = NULL;
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}
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spin_unlock_irqrestore(&pcdev->lock, flags);
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@ -686,6 +669,7 @@ static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr)
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ceu_write(pcdev, CAPSR, capsr);
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}
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/* Capture is not running, no interrupts, no locking needed */
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static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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__u32 pixfmt)
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{
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@ -1726,43 +1710,11 @@ static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd,
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return ret;
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}
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static int sh_mobile_ceu_reqbufs(struct soc_camera_device *icd,
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struct v4l2_requestbuffers *p)
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{
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int i;
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/*
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* This is for locking debugging only. I removed spinlocks and now I
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* check whether .prepare is ever called on a linked buffer, or whether
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* a dma IRQ can occur for an in-work or unlinked buffer. Until now
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* it hadn't triggered
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*/
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for (i = 0; i < p->count; i++) {
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struct sh_mobile_ceu_buffer *buf;
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buf = container_of(icd->vb_vidq.bufs[i],
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struct sh_mobile_ceu_buffer, vb);
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INIT_LIST_HEAD(&buf->vb.queue);
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}
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return 0;
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}
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static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt)
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{
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struct soc_camera_device *icd = file->private_data;
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struct sh_mobile_ceu_buffer *buf;
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buf = list_entry(icd->vb_vidq.stream.next,
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struct sh_mobile_ceu_buffer, vb.stream);
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poll_wait(file, &buf->vb.done, pt);
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|
||||
if (buf->vb.state == VIDEOBUF_DONE ||
|
||||
buf->vb.state == VIDEOBUF_ERROR)
|
||||
return POLLIN|POLLRDNORM;
|
||||
|
||||
return 0;
|
||||
return vb2_poll(&icd->vb2_vidq, file, pt);
|
||||
}
|
||||
|
||||
static int sh_mobile_ceu_querycap(struct soc_camera_host *ici,
|
||||
|
|
@ -1774,19 +1726,17 @@ static int sh_mobile_ceu_querycap(struct soc_camera_host *ici,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q,
|
||||
struct soc_camera_device *icd)
|
||||
static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q,
|
||||
struct soc_camera_device *icd)
|
||||
{
|
||||
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
|
||||
struct sh_mobile_ceu_dev *pcdev = ici->priv;
|
||||
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
||||
q->io_modes = VB2_MMAP | VB2_USERPTR;
|
||||
q->drv_priv = icd;
|
||||
q->ops = &sh_mobile_ceu_videobuf_ops;
|
||||
q->mem_ops = &vb2_dma_contig_memops;
|
||||
q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer);
|
||||
|
||||
videobuf_queue_dma_contig_init(q,
|
||||
&sh_mobile_ceu_videobuf_ops,
|
||||
icd->dev.parent, &pcdev->lock,
|
||||
V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
||||
pcdev->field,
|
||||
sizeof(struct sh_mobile_ceu_buffer),
|
||||
icd, &icd->video_lock);
|
||||
return vb2_queue_init(q);
|
||||
}
|
||||
|
||||
static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd,
|
||||
|
|
@ -1850,11 +1800,10 @@ static struct soc_camera_host_ops sh_mobile_ceu_host_ops = {
|
|||
.try_fmt = sh_mobile_ceu_try_fmt,
|
||||
.set_ctrl = sh_mobile_ceu_set_ctrl,
|
||||
.get_ctrl = sh_mobile_ceu_get_ctrl,
|
||||
.reqbufs = sh_mobile_ceu_reqbufs,
|
||||
.poll = sh_mobile_ceu_poll,
|
||||
.querycap = sh_mobile_ceu_querycap,
|
||||
.set_bus_param = sh_mobile_ceu_set_bus_param,
|
||||
.init_videobuf = sh_mobile_ceu_init_videobuf,
|
||||
.init_videobuf2 = sh_mobile_ceu_init_videobuf,
|
||||
.controls = sh_mobile_ceu_controls,
|
||||
.num_controls = ARRAY_SIZE(sh_mobile_ceu_controls),
|
||||
};
|
||||
|
|
@ -2005,12 +1954,20 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
|
|||
}
|
||||
}
|
||||
|
||||
pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
|
||||
if (IS_ERR(pcdev->alloc_ctx)) {
|
||||
err = PTR_ERR(pcdev->alloc_ctx);
|
||||
goto exit_module_put;
|
||||
}
|
||||
|
||||
err = soc_camera_host_register(&pcdev->ici);
|
||||
if (err)
|
||||
goto exit_module_put;
|
||||
goto exit_free_ctx;
|
||||
|
||||
return 0;
|
||||
|
||||
exit_free_ctx:
|
||||
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
|
||||
exit_module_put:
|
||||
if (csi2 && csi2->driver)
|
||||
module_put(csi2->driver->owner);
|
||||
|
|
@ -2041,6 +1998,7 @@ static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev)
|
|||
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
|
||||
dma_release_declared_memory(&pdev->dev);
|
||||
iounmap(pcdev->base);
|
||||
vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx);
|
||||
if (csi2 && csi2->driver)
|
||||
module_put(csi2->driver->owner);
|
||||
kfree(pcdev);
|
||||
|
|
|
|||
Loading…
Reference in New Issue