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path: root/drivers/mtd/onenand/omap2.c
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Diffstat (limited to 'drivers/mtd/onenand/omap2.c')
-rw-r--r--drivers/mtd/onenand/omap2.c129
1 files changed, 4 insertions, 125 deletions
diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index d22163271dc9..36314124488d 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -315,9 +315,7 @@ static inline int omap2_onenand_dma_transfer(struct omap2_onenand *c,
return 0;
}
-#if defined(CONFIG_ARCH_OMAP3) || defined(MULTI_OMAP2)
-
-static int omap3_onenand_read_bufferram(struct mtd_info *mtd, int area,
+static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area,
unsigned char *buffer, int offset,
size_t count)
{
@@ -379,7 +377,7 @@ out_copy:
return 0;
}
-static int omap3_onenand_write_bufferram(struct mtd_info *mtd, int area,
+static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area,
const unsigned char *buffer,
int offset, size_t count)
{
@@ -434,120 +432,6 @@ out_copy:
return 0;
}
-#else
-
-static int omap3_onenand_read_bufferram(struct mtd_info *mtd, int area,
- unsigned char *buffer, int offset,
- size_t count)
-{
- return -ENOSYS;
-}
-
-static int omap3_onenand_write_bufferram(struct mtd_info *mtd, int area,
- const unsigned char *buffer,
- int offset, size_t count)
-{
- return -ENOSYS;
-}
-
-#endif
-
-#if defined(CONFIG_ARCH_OMAP2) || defined(MULTI_OMAP2)
-
-static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area,
- unsigned char *buffer, int offset,
- size_t count)
-{
- struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
- struct onenand_chip *this = mtd->priv;
- dma_addr_t dma_src, dma_dst;
- int bram_offset, ret;
-
- bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
- /* DMA is not used. Revisit PM requirements before enabling it. */
- if (1 || (c->dma_channel < 0) ||
- ((void *) buffer >= (void *) high_memory) || (bram_offset & 3) ||
- (((unsigned int) buffer) & 3) || (count < 1024) || (count & 3)) {
- memcpy(buffer, (__force void *)(this->base + bram_offset),
- count);
- return 0;
- }
-
- dma_src = c->phys_base + bram_offset;
- dma_dst = dma_map_single(&c->pdev->dev, buffer, count,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(&c->pdev->dev, dma_dst)) {
- dev_err(&c->pdev->dev,
- "Couldn't DMA map a %d byte buffer\n",
- count);
- return -1;
- }
-
- ret = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count);
- dma_unmap_single(&c->pdev->dev, dma_dst, count, DMA_FROM_DEVICE);
-
- if (ret)
- dev_err(&c->pdev->dev, "timeout waiting for DMA\n");
-
- return ret;
-}
-
-static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area,
- const unsigned char *buffer,
- int offset, size_t count)
-{
- struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
- struct onenand_chip *this = mtd->priv;
- dma_addr_t dma_src, dma_dst;
- int bram_offset, ret;
-
- bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
- /* DMA is not used. Revisit PM requirements before enabling it. */
- if (1 || (c->dma_channel < 0) ||
- ((void *) buffer >= (void *) high_memory) || (bram_offset & 3) ||
- (((unsigned int) buffer) & 3) || (count < 1024) || (count & 3)) {
- memcpy((__force void *)(this->base + bram_offset), buffer,
- count);
- return 0;
- }
-
- dma_src = dma_map_single(&c->pdev->dev, (void *) buffer, count,
- DMA_TO_DEVICE);
- dma_dst = c->phys_base + bram_offset;
- if (dma_mapping_error(&c->pdev->dev, dma_src)) {
- dev_err(&c->pdev->dev,
- "Couldn't DMA map a %d byte buffer\n",
- count);
- return -1;
- }
-
- ret = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count);
- dma_unmap_single(&c->pdev->dev, dma_src, count, DMA_TO_DEVICE);
-
- if (ret)
- dev_err(&c->pdev->dev, "timeout waiting for DMA\n");
-
- return ret;
-}
-
-#else
-
-static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area,
- unsigned char *buffer, int offset,
- size_t count)
-{
- return -ENOSYS;
-}
-
-static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area,
- const unsigned char *buffer,
- int offset, size_t count)
-{
- return -ENOSYS;
-}
-
-#endif
-
static struct platform_driver omap2_onenand_driver;
static void omap2_onenand_shutdown(struct platform_device *pdev)
@@ -671,13 +555,8 @@ static int omap2_onenand_probe(struct platform_device *pdev)
this = &c->onenand;
if (c->dma_channel >= 0) {
this->wait = omap2_onenand_wait;
- if (c->flags & ONENAND_IN_OMAP34XX) {
- this->read_bufferram = omap3_onenand_read_bufferram;
- this->write_bufferram = omap3_onenand_write_bufferram;
- } else {
- this->read_bufferram = omap2_onenand_read_bufferram;
- this->write_bufferram = omap2_onenand_write_bufferram;
- }
+ this->read_bufferram = omap2_onenand_read_bufferram;
+ this->write_bufferram = omap2_onenand_write_bufferram;
}
if ((r = onenand_scan(&c->mtd, 1)) < 0)