From 717f4a5f55e307b3ba2b1a8c05428bb5dd35047e Mon Sep 17 00:00:00 2001 From: Marin Mitov Date: Fri, 7 May 2010 11:00:35 +0300 Subject: staging: dt3155v4l syncronize with API changes dt3155v4l driver, as in -rc6-next-20100506 compiles, but will not run properly due to recent changes in the videobuf APIs. This patch synchronizes some functions that have been copied from drivers/media/video/videobuf-dma-contig.c (and modified) with the recent (-rc6 -> -rc6-next-) changes in videobuf layer especially drivers/media/video/videobuf-dma-contig.c Signed-off-by: Marin Mitov Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dt3155v4l/dt3155v4l.c | 68 ++++++++++++++++++----------------- 1 file changed, 36 insertions(+), 32 deletions(-) (limited to 'drivers/staging/dt3155v4l') diff --git a/drivers/staging/dt3155v4l/dt3155v4l.c b/drivers/staging/dt3155v4l/dt3155v4l.c index 881c3e99bd4..b1695ad9b56 100644 --- a/drivers/staging/dt3155v4l/dt3155v4l.c +++ b/drivers/staging/dt3155v4l/dt3155v4l.c @@ -1,3 +1,23 @@ +/*************************************************************************** + * Copyright (C) 2006-2010 by Marin Mitov * + * mitov@issp.bas.bg * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + #include #include #include @@ -260,9 +280,11 @@ dt3155_dma_contig_user_get(struct videobuf_dma_contig_memory *mem, struct vm_area_struct *vma; unsigned long prev_pfn, this_pfn; unsigned long pages_done, user_address; + unsigned int offset; int ret; - mem->size = PAGE_ALIGN(vb->size); + offset = vb->baddr & ~PAGE_MASK; + mem->size = PAGE_ALIGN(vb->size + offset); mem->is_userptr = 0; ret = -EINVAL; @@ -285,7 +307,7 @@ dt3155_dma_contig_user_get(struct videobuf_dma_contig_memory *mem, break; if (pages_done == 0) - mem->dma_handle = this_pfn << PAGE_SHIFT; + mem->dma_handle = (this_pfn << PAGE_SHIFT) + offset; else if (this_pfn != (prev_pfn + 1)) ret = -EFAULT; @@ -416,14 +438,14 @@ dt3155_vm_close(struct vm_area_struct *vma) struct videobuf_queue *q = map->q; int i; - dev_dbg(map->q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", + dev_dbg(q->dev, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map, map->count, vma->vm_start, vma->vm_end); map->count--; if (0 == map->count) { struct videobuf_dma_contig_memory *mem; - dev_dbg(map->q->dev, "munmap %p q=%p\n", map, q); + dev_dbg(q->dev, "munmap %p q=%p\n", map, q); mutex_lock(&q->vb_lock); /* We need first to cancel streams, before unmapping */ @@ -450,7 +472,7 @@ dt3155_vm_close(struct vm_area_struct *vma) /* vfree is not atomic - can't be called with IRQ's disabled */ - dev_dbg(map->q->dev, "buf[%d] freeing %p\n", + dev_dbg(q->dev, "buf[%d] freeing %p\n", i, mem->vaddr); dt3155_free_buffer(q->dev, mem->size, @@ -475,51 +497,33 @@ static const struct vm_operations_struct dt3155_vm_ops = { /* same as videobuf_mmap_mapper(), but allocates from the pool */ static int -dt3155_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma) +dt3155_mmap_mapper(struct videobuf_queue *q, struct videobuf_buffer *buf, + struct vm_area_struct *vma) { struct videobuf_dma_contig_memory *mem; struct videobuf_mapping *map; - unsigned int first; int retval; - unsigned long size, offset = vma->vm_pgoff << PAGE_SHIFT; + unsigned long size; dev_dbg(q->dev, "%s\n", __func__); - if (!(vma->vm_flags & VM_WRITE) || !(vma->vm_flags & VM_SHARED)) - return -EINVAL; - - /* look for first buffer to map */ - for (first = 0; first < VIDEO_MAX_FRAME; first++) { - if (!q->bufs[first]) - continue; - - if (V4L2_MEMORY_MMAP != q->bufs[first]->memory) - continue; - if (q->bufs[first]->boff == offset) - break; - } - if (VIDEO_MAX_FRAME == first) { - dev_dbg(q->dev, "invalid user space offset [offset=0x%lx]\n", - offset); - return -EINVAL; - } /* create mapping + update buffer list */ map = kzalloc(sizeof(struct videobuf_mapping), GFP_KERNEL); if (!map) return -ENOMEM; - q->bufs[first]->map = map; + buf->map = map; map->start = vma->vm_start; map->end = vma->vm_end; map->q = q; - q->bufs[first]->baddr = vma->vm_start; + buf->baddr = vma->vm_start; - mem = q->bufs[first]->priv; + mem = buf->priv; BUG_ON(!mem); MAGIC_CHECK(mem->magic, MAGIC_DC_MEM); - mem->size = PAGE_ALIGN(q->bufs[first]->bsize); + mem->size = PAGE_ALIGN(buf->bsize); mem->vaddr = dt3155_alloc_buffer(q->dev, mem->size, &mem->dma_handle, GFP_KERNEL); if (!mem->vaddr) { @@ -552,8 +556,8 @@ dt3155_mmap_mapper(struct videobuf_queue *q, struct vm_area_struct *vma) dev_dbg(q->dev, "mmap %p: q=%p %08lx-%08lx (%lx) pgoff %08lx buf %d\n", map, q, vma->vm_start, vma->vm_end, - (long int) q->bufs[first]->bsize, - vma->vm_pgoff, first); + (long int)buf->bsize, + vma->vm_pgoff, buf->i); dt3155_vm_open(vma); -- cgit v1.2.3