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>

diff --git a/drivers/dma/ti-edma3.c b/drivers/dma/ti-edma3.c
index d6a427f2e21d3f88679874d52c2b9fa53a815328..247843891e2491fbae2d44629b9bac47864e0eb6 100644 (file)
--- 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 */