adopt ti-edma3 driver to device driver model
Signed-off-by: Mugunthan V N mugunthanvnm@ti.com Reviewed-by: Simon Glass sjg@chromium.org --- drivers/dma/ti-edma3.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 80 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/ti-edma3.c b/drivers/dma/ti-edma3.c index d6a427f..2478438 100644 --- a/drivers/dma/ti-edma3.c +++ b/drivers/dma/ti-edma3.c @@ -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 */