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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2014-01-02 10:09:00 -0300
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-05-25 11:07:45 -0300
commit4d4c00d4fd7fa49f9105c3543c06a3990eb9094f (patch)
treec364ddadc885004444dd50c01429b0a034180bcd
parent512698605dac47f1745dee435f2e3b9bc3346c2d (diff)
[media] omap3isp: stat: Share common code for buffer allocation
Move code common between the isp_stat_bufs_alloc_dma() and isp_stat_bufs_alloc_iommu() functions to isp_stat_bufs_alloc(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
-rw-r--r--drivers/media/platform/omap3isp/ispstat.c114
1 files changed, 54 insertions, 60 deletions
diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c
index c6c1290e738d..b1eb90210388 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -389,74 +389,42 @@ static void isp_stat_bufs_free(struct ispstat *stat)
stat->active_buf = NULL;
}
-static int isp_stat_bufs_alloc_iommu(struct ispstat *stat, unsigned int size)
+static int isp_stat_bufs_alloc_iommu(struct ispstat *stat,
+ struct ispstat_buffer *buf,
+ unsigned int size)
{
struct isp_device *isp = stat->isp;
- int i;
+ struct iovm_struct *iovm;
- stat->buf_alloc_size = size;
+ buf->iommu_addr = omap_iommu_vmalloc(isp->domain, isp->dev, 0,
+ size, IOMMU_FLAG);
+ if (IS_ERR((void *)buf->iommu_addr))
+ return -ENOMEM;
- for (i = 0; i < STAT_MAX_BUFS; i++) {
- struct ispstat_buffer *buf = &stat->buf[i];
- struct iovm_struct *iovm;
+ iovm = omap_find_iovm_area(isp->dev, buf->iommu_addr);
+ if (!iovm)
+ return -ENOMEM;
- buf->iommu_addr = omap_iommu_vmalloc(isp->domain, isp->dev, 0,
- size, IOMMU_FLAG);
- if (IS_ERR((void *)buf->iommu_addr)) {
- dev_err(stat->isp->dev,
- "%s: Can't acquire memory for "
- "buffer %d\n", stat->subdev.name, i);
- isp_stat_bufs_free(stat);
- return -ENOMEM;
- }
+ if (!dma_map_sg(isp->dev, iovm->sgt->sgl, iovm->sgt->nents,
+ DMA_FROM_DEVICE))
+ return -ENOMEM;
- iovm = omap_find_iovm_area(isp->dev, buf->iommu_addr);
- if (!iovm ||
- !dma_map_sg(isp->dev, iovm->sgt->sgl, iovm->sgt->nents,
- DMA_FROM_DEVICE)) {
- isp_stat_bufs_free(stat);
- return -ENOMEM;
- }
- buf->iovm = iovm;
-
- buf->virt_addr = omap_da_to_va(stat->isp->dev,
- (u32)buf->iommu_addr);
- buf->empty = 1;
- dev_dbg(stat->isp->dev, "%s: buffer[%d] allocated."
- "iommu_addr=0x%08lx virt_addr=0x%08lx",
- stat->subdev.name, i, buf->iommu_addr,
- (unsigned long)buf->virt_addr);
- }
+ buf->iovm = iovm;
+ buf->virt_addr = omap_da_to_va(stat->isp->dev,
+ (u32)buf->iommu_addr);
return 0;
}
-static int isp_stat_bufs_alloc_dma(struct ispstat *stat, unsigned int size)
+static int isp_stat_bufs_alloc_dma(struct ispstat *stat,
+ struct ispstat_buffer *buf,
+ unsigned int size)
{
- int i;
-
- stat->buf_alloc_size = size;
-
- for (i = 0; i < STAT_MAX_BUFS; i++) {
- struct ispstat_buffer *buf = &stat->buf[i];
-
- buf->virt_addr = dma_alloc_coherent(stat->isp->dev, size,
- &buf->dma_addr, GFP_KERNEL | GFP_DMA);
-
- if (!buf->virt_addr || !buf->dma_addr) {
- dev_info(stat->isp->dev,
- "%s: Can't acquire memory for "
- "DMA buffer %d\n", stat->subdev.name, i);
- isp_stat_bufs_free(stat);
- return -ENOMEM;
- }
- buf->empty = 1;
+ buf->virt_addr = dma_alloc_coherent(stat->isp->dev, size,
+ &buf->dma_addr, GFP_KERNEL | GFP_DMA);
- dev_dbg(stat->isp->dev, "%s: buffer[%d] allocated."
- "dma_addr=0x%08lx virt_addr=0x%08lx\n",
- stat->subdev.name, i, (unsigned long)buf->dma_addr,
- (unsigned long)buf->virt_addr);
- }
+ if (!buf->virt_addr || !buf->dma_addr)
+ return -ENOMEM;
return 0;
}
@@ -464,6 +432,7 @@ static int isp_stat_bufs_alloc_dma(struct ispstat *stat, unsigned int size)
static int isp_stat_bufs_alloc(struct ispstat *stat, u32 size)
{
unsigned long flags;
+ unsigned int i;
spin_lock_irqsave(&stat->isp->stat_lock, flags);
@@ -487,10 +456,35 @@ static int isp_stat_bufs_alloc(struct ispstat *stat, u32 size)
isp_stat_bufs_free(stat);
- if (ISP_STAT_USES_DMAENGINE(stat))
- return isp_stat_bufs_alloc_dma(stat, size);
- else
- return isp_stat_bufs_alloc_iommu(stat, size);
+ stat->buf_alloc_size = size;
+
+ for (i = 0; i < STAT_MAX_BUFS; i++) {
+ struct ispstat_buffer *buf = &stat->buf[i];
+ int ret;
+
+ if (ISP_STAT_USES_DMAENGINE(stat))
+ ret = isp_stat_bufs_alloc_dma(stat, buf, size);
+ else
+ ret = isp_stat_bufs_alloc_iommu(stat, buf, size);
+
+ if (ret < 0) {
+ dev_err(stat->isp->dev,
+ "%s: Failed to allocate DMA buffer %u\n",
+ stat->subdev.name, i);
+ isp_stat_bufs_free(stat);
+ return ret;
+ }
+
+ buf->empty = 1;
+
+ dev_dbg(stat->isp->dev,
+ "%s: buffer[%u] allocated. iommu=0x%08lx dma=0x%08lx virt=0x%08lx",
+ stat->subdev.name, i, buf->iommu_addr,
+ (unsigned long)buf->dma_addr,
+ (unsigned long)buf->virt_addr);
+ }
+
+ return 0;
}
static void isp_stat_queue_event(struct ispstat *stat, int err)

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