[U-Boot] [PATCH v3 1/4] usb: host: xhci-dwc3: Convert driver to DM

[patrice.chotard at st.com]

From: Patrice Chotard <patrice.chotard at st.com>

Add Driver Model support with use of generic DT
compatible string "snps,dwc3"

Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
Reviewed-by: Marek Vasut <marex at denx.de>
Reviewed-by: Simon Glass <sjg at chromium.org>
---

v3:	_ none
v2:	_ use dev_get_addr() and removed useless piece of code

 drivers/usb/host/xhci-dwc3.c | 50 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 33961cd..ab75fb7 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -9,9 +9,19 @@
  */
 
 #include <common.h>
+#include <dm.h>
+#include <usb.h>
+
+#include "xhci.h"
 #include <asm/io.h>
 #include <linux/usb/dwc3.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
+struct xhci_dwc3_priv {
+	struct xhci_ctrl ctrl;
+};
+
 void dwc3_set_mode(struct dwc3 *dwc3_reg, u32 mode)
 {
 	clrsetbits_le32(&dwc3_reg->g_ctl,
@@ -97,3 +107,43 @@ void dwc3_set_fladj(struct dwc3 *dwc3_reg, u32 val)
 	setbits_le32(&dwc3_reg->g_fladj, GFLADJ_30MHZ_REG_SEL |
 			GFLADJ_30MHZ(val));
 }
+
+static int xhci_dwc3_probe(struct udevice *dev)
+{
+	struct xhci_dwc3_platdata *plat = dev_get_platdata(dev);
+	struct xhci_hcor *hcor;
+	struct xhci_hccr *hccr;
+	struct dwc3 *dwc3_reg;
+
+	hccr = (struct xhci_hccr *)dev_get_addr(dev);
+	hcor = (struct xhci_hcor *)((phys_addr_t)hccr +
+			HC_LENGTH(xhci_readl(&(hccr)->cr_capbase)));
+
+	dwc3_reg = (struct dwc3 *)((char *)(hccr) + DWC3_REG_OFFSET);
+
+	dwc3_core_init(dwc3_reg);
+
+	return xhci_register(dev, hccr, hcor);
+}
+
+static int xhci_dwc3_remove(struct udevice *dev)
+{
+	return xhci_deregister(dev);
+}
+
+static const struct udevice_id xhci_dwc3_ids[] = {
+	{ .compatible = "snps,dwc3" },
+	{ }
+};
+
+U_BOOT_DRIVER(xhci_dwc3) = {
+	.name = "xhci-dwc3",
+	.id = UCLASS_USB,
+	.of_match = xhci_dwc3_ids,
+	.probe = xhci_dwc3_probe,
+	.remove = xhci_dwc3_remove,
+	.ops = &xhci_usb_ops,
+	.priv_auto_alloc_size = sizeof(struct xhci_dwc3_priv),
+	.platdata_auto_alloc_size = sizeof(struct xhci_dwc3_platdata),
+	.flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
-- 
1.9.1