Vaibhav,
There are changes to vpfe capture on Arago tree on top of this. For
example, vpfe_uservirt_to_phys() is removed and is replaced with
videobuf_iolock(). So please get the latest changes to upstream.
Murali
On Tue, Feb 23, 2010 at 3:34 AM, <hvaibhav@xxxxxx> wrote:
> From: Vaibhav Hiremath <hvaibhav@xxxxxx>
>
>
> Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
> Signed-off-by: Muralidharan Karicheri <m-karicheri2@xxxxxx>
> ---
> drivers/media/video/ti-media/vpfe_capture.c | 94 ++++++++++++++++++++++----
> 1 files changed, 79 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/video/ti-media/vpfe_capture.c b/drivers/media/video/ti-media/vpfe_capture.c
> index cece265..7d4ab44 100644
> --- a/drivers/media/video/ti-media/vpfe_capture.c
> +++ b/drivers/media/video/ti-media/vpfe_capture.c
> @@ -538,7 +538,24 @@ static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev)
> struct videobuf_buffer, queue);
> list_del(&vpfe_dev->next_frm->queue);
> vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE;
> - addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
> + if (V4L2_MEMORY_USERPTR == vpfe_dev->memory)
> + addr = vpfe_dev->cur_frm->boff;
> + else
> + addr = videobuf_to_dma_contig(vpfe_dev->next_frm);
> +
> + ccdc_dev->hw_ops.setfbaddr(addr);
> +}
> +
> +static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev)
> +{
> + unsigned long addr;
> +
> + if (V4L2_MEMORY_USERPTR == vpfe_dev->memory)
> + addr = vpfe_dev->cur_frm->boff;
> + else
> + addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
> +
> + addr += vpfe_dev->field_off;
> ccdc_dev->hw_ops.setfbaddr(addr);
> }
>
> @@ -559,7 +576,6 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id)
> {
> struct vpfe_device *vpfe_dev = dev_id;
> enum v4l2_field field;
> - unsigned long addr;
> int fid;
>
> v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n");
> @@ -604,10 +620,7 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id)
> * the CCDC memory address
> */
> if (field == V4L2_FIELD_SEQ_TB) {
> - addr =
> - videobuf_to_dma_contig(vpfe_dev->cur_frm);
> - addr += vpfe_dev->field_off;
> - ccdc_dev->hw_ops.setfbaddr(addr);
> + vpfe_schedule_bottom_field(vpfe_dev);
> }
> goto clear_intr;
> }
> @@ -1234,7 +1247,10 @@ static int vpfe_videobuf_setup(struct videobuf_queue *vq,
> struct vpfe_device *vpfe_dev = fh->vpfe_dev;
>
> v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n");
> - *size = config_params.device_bufsize;
> + *size = vpfe_dev->fmt.fmt.pix.sizeimage;
> + if (vpfe_dev->memory == V4L2_MEMORY_MMAP &&
> + vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize)
> + *size = config_params.device_bufsize;
>
> if (*count < config_params.min_numbuffers)
> *count = config_params.min_numbuffers;
> @@ -1243,6 +1259,46 @@ static int vpfe_videobuf_setup(struct videobuf_queue *vq,
> return 0;
> }
>
> +/*
> + * vpfe_uservirt_to_phys: This function is used to convert user
> + * space virtual address to physical address.
> + */
> +static u32 vpfe_uservirt_to_phys(struct vpfe_device *vpfe_dev, u32 virtp)
> +{
> + struct mm_struct *mm = current->mm;
> + unsigned long physp = 0;
> + struct vm_area_struct *vma;
> +
> + vma = find_vma(mm, virtp);
> +
> + /* For kernel direct-mapped memory, take the easy way */
> + if (virtp >= PAGE_OFFSET)
> + physp = virt_to_phys((void *)virtp);
> + else if (vma && (vma->vm_flags & VM_IO) && (vma->vm_pgoff))
> + /* this will catch, kernel-allocated, mmaped-to-usermode addr */
> + physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
> + else {
> + /* otherwise, use get_user_pages() for general userland pages */
> + int res, nr_pages = 1;
> + struct page *pages;
> + down_read(¤t->mm->mmap_sem);
> +
> + res = get_user_pages(current, current->mm,
> + virtp, nr_pages, 1, 0, &pages, NULL);
> + up_read(¤t->mm->mmap_sem);
> +
> + if (res == nr_pages)
> + physp = __pa(page_address(&pages[0]) +
> + (virtp & ~PAGE_MASK));
> + else {
> + v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
> + "get_user_pages failed\n");
> + return 0;
> + }
> + }
> + return physp;
> +}
> +
> static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
> struct videobuf_buffer *vb,
> enum v4l2_field field)
> @@ -1259,6 +1315,18 @@ static int vpfe_videobuf_prepare(struct videobuf_queue *vq,
> vb->size = vpfe_dev->fmt.fmt.pix.sizeimage;
> vb->field = field;
> }
> +
> + if (V4L2_MEMORY_USERPTR == vpfe_dev->memory) {
> + if (!vb->baddr) {
> + v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev,
> + "buffer address is 0\n");
> + return -EINVAL;
> + }
> + vb->boff = vpfe_uservirt_to_phys(vpfe_dev, vb->baddr);
> + /* Make sure user addresses are aligned to 32 bytes */
> + if (!ALIGN(vb->boff, 32))
> + return -EINVAL;
> + }
> vb->state = VIDEOBUF_PREPARED;
> return 0;
> }
> @@ -1327,13 +1395,6 @@ static int vpfe_reqbufs(struct file *file, void *priv,
> return -EINVAL;
> }
>
> - if (V4L2_MEMORY_USERPTR == req_buf->memory) {
> - /* we don't support user ptr IO */
> - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs:"
> - " USERPTR IO not supported\n");
> - return -EINVAL;
> - }
> -
> ret = mutex_lock_interruptible(&vpfe_dev->lock);
> if (ret)
> return ret;
> @@ -1541,7 +1602,10 @@ static int vpfe_streamon(struct file *file, void *priv,
> vpfe_dev->cur_frm->state = VIDEOBUF_ACTIVE;
> /* Initialize field_id and started member */
> vpfe_dev->field_id = 0;
> - addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
> + if (V4L2_MEMORY_USERPTR == vpfe_dev->memory)
> + addr = vpfe_dev->cur_frm->boff;
> + else
> + addr = videobuf_to_dma_contig(vpfe_dev->cur_frm);
>
> /* Calculate field offset */
> vpfe_calculate_offsets(vpfe_dev);
> --
> 1.6.2.4
>
> --
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--
Murali Karicheri
mkaricheri@xxxxxxxxx
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