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drivers: dma: ti-edma3: convert driver to adopt driver model 

adopt ti-edma3 driver to device driver model

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jteki@openedev.com>
utp
Mugunthan V N 2016-02-15 15:31:41 +05:30 committed by Jagan Teki
parent 518b0afc33
commit 1218e5c507
1 changed files with 80 additions and 2 deletions
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82
drivers/dma/ti-edma3.c
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@ -11,6 +11,9 @@
#include <asm/io.h>
#include <common.h>
#include <dma.h>
#include <dm/device.h>
#include <asm/omap_common.h>
#include <asm/ti-common/ti-edma3.h>
#define EDMA3_SL_BASE(slot) (0x4000 + ((slot) << 5))
@ -31,6 +34,10 @@
#define EDMA3_QEESR 0x108c
#define EDMA3_QSECR 0x1094
struct ti_edma3_priv {
u32 base;
};
/**
* qedma3_start - start qdma on a channel
* @base: base address of edma
@ -383,8 +390,8 @@ void qedma3_stop(u32 base, struct edma3_channel_config *cfg)
__raw_writel(0, base + EDMA3_QCHMAP(cfg->chnum));
}
void edma3_transfer(unsigned long edma3_base_addr, unsigned int
edma_slot_num, void *dst, void *src, size_t len)
void __edma3_transfer(unsigned long edma3_base_addr, unsigned int edma_slot_num,
void *dst, void *src, size_t len)
{
struct edma3_slot_config slot;
struct edma3_channel_config edma_channel;
@ -460,3 +467,74 @@ void edma3_transfer(unsigned long edma3_base_addr, unsigned int
qedma3_stop(edma3_base_addr, &edma_channel);
}
}
#ifndef CONFIG_DMA
void edma3_transfer(unsigned long edma3_base_addr, unsigned int edma_slot_num,
void *dst, void *src, size_t len)
{
__edma3_transfer(edma3_base_addr, edma_slot_num, dst, src, len);
}
#else
static int ti_edma3_transfer(struct udevice *dev, int direction, void *dst,
void *src, size_t len)
{
struct ti_edma3_priv *priv = dev_get_priv(dev);
/* enable edma3 clocks */
enable_edma3_clocks();
switch (direction) {
case DMA_MEM_TO_MEM:
__edma3_transfer(priv->base, 1, dst, src, len);
break;
default:
error("Transfer type not implemented in DMA driver\n");
break;
}
/* disable edma3 clocks */
disable_edma3_clocks();
return 0;
}
static int ti_edma3_ofdata_to_platdata(struct udevice *dev)
{
struct ti_edma3_priv *priv = dev_get_priv(dev);
priv->base = dev_get_addr(dev);
return 0;
}
static int ti_edma3_probe(struct udevice *dev)
{
struct dma_dev_priv *uc_priv = dev_get_uclass_priv(dev);
uc_priv->supported = DMA_SUPPORTS_MEM_TO_MEM;
return 0;
}
static const struct dma_ops ti_edma3_ops = {
.transfer = ti_edma3_transfer,
};
static const struct udevice_id ti_edma3_ids[] = {
{ .compatible = "ti,edma3" },
{ }
};
U_BOOT_DRIVER(ti_edma3) = {
.name = "ti_edma3",
.id = UCLASS_DMA,
.of_match = ti_edma3_ids,
.ops = &ti_edma3_ops,
.ofdata_to_platdata = ti_edma3_ofdata_to_platdata,
.probe = ti_edma3_probe,
.priv_auto_alloc_size = sizeof(struct ti_edma3_priv),
};
#endif /* CONFIG_DMA */