dm: usb: exynos: Adjust XHCI driver to support driver model
Support driver model in the exynos XHCI driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/usb/host/xhci-exynos5.c b/drivers/usb/host/xhci-exynos5.c
index 3f86fdc..23c7ecc 100644
--- a/drivers/usb/host/xhci-exynos5.c
+++ b/drivers/usb/host/xhci-exynos5.c
@@ -14,6 +14,7 @@
*/
#include <common.h>
+#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <malloc.h>
@@ -32,20 +33,76 @@
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_DM_USB
+struct exynos_xhci_platdata {
+ fdt_addr_t hcd_base;
+ fdt_addr_t phy_base;
+ struct gpio_desc vbus_gpio;
+};
+#endif
+
/**
* Contains pointers to register base addresses
* for the usb controller.
*/
struct exynos_xhci {
+#ifdef CONFIG_DM_USB
+ struct usb_platdata usb_plat;
+#endif
+ struct xhci_ctrl ctrl;
struct exynos_usb3_phy *usb3_phy;
struct xhci_hccr *hcd;
struct dwc3 *dwc3_reg;
+#ifndef CONFIG_DM_USB
struct gpio_desc vbus_gpio;
+#endif
};
+#ifndef CONFIG_DM_USB
static struct exynos_xhci exynos;
+#endif
-#ifdef CONFIG_OF_CONTROL
+#ifdef CONFIG_DM_USB
+static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
+{
+ struct exynos_xhci_platdata *plat = dev_get_platdata(dev);
+ const void *blob = gd->fdt_blob;
+ unsigned int node;
+ int depth;
+
+ /*
+ * Get the base address for XHCI controller from the device node
+ */
+ plat->hcd_base = fdtdec_get_addr(blob, dev->of_offset, "reg");
+ if (plat->hcd_base == FDT_ADDR_T_NONE) {
+ debug("Can't get the XHCI register base address\n");
+ return -ENXIO;
+ }
+
+ depth = 0;
+ node = fdtdec_next_compatible_subnode(blob, dev->of_offset,
+ COMPAT_SAMSUNG_EXYNOS5_USB3_PHY, &depth);
+ if (node <= 0) {
+ debug("XHCI: Can't get device node for usb3-phy controller\n");
+ return -ENODEV;
+ }
+
+ /*
+ * Get the base address for usbphy from the device node
+ */
+ plat->phy_base = fdtdec_get_addr(blob, node, "reg");
+ if (plat->phy_base == FDT_ADDR_T_NONE) {
+ debug("Can't get the usbphy register address\n");
+ return -ENXIO;
+ }
+
+ /* Vbus gpio */
+ gpio_request_by_name(dev, "samsung,vbus-gpio", 0,
+ &plat->vbus_gpio, GPIOD_IS_OUT);
+
+ return 0;
+}
+#else
static int exynos_usb3_parse_dt(const void *blob, struct exynos_xhci *exynos)
{
fdt_addr_t addr;
@@ -283,6 +340,7 @@
exynos5_usb3_phy_exit(exynos->usb3_phy);
}
+#ifndef CONFIG_DM_USB
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
{
struct exynos_xhci *ctx = &exynos;
@@ -326,3 +384,63 @@
exynos_xhci_core_exit(ctx);
}
+#endif
+
+#ifdef CONFIG_DM_USB
+static int xhci_usb_probe(struct udevice *dev)
+{
+ struct exynos_xhci_platdata *plat = dev_get_platdata(dev);
+ struct exynos_xhci *ctx = dev_get_priv(dev);
+ struct xhci_hcor *hcor;
+ int ret;
+
+ ctx->hcd = (struct xhci_hccr *)plat->hcd_base;
+ ctx->usb3_phy = (struct exynos_usb3_phy *)plat->phy_base;
+ ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET);
+ hcor = (struct xhci_hcor *)((uint32_t)ctx->hcd +
+ HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase)));
+
+ /* setup the Vbus gpio here */
+ if (dm_gpio_is_valid(&plat->vbus_gpio))
+ dm_gpio_set_value(&plat->vbus_gpio, 1);
+
+ ret = exynos_xhci_core_init(ctx);
+ if (ret) {
+ puts("XHCI: failed to initialize controller\n");
+ return -EINVAL;
+ }
+
+ return xhci_register(dev, ctx->hcd, hcor);
+}
+
+static int xhci_usb_remove(struct udevice *dev)
+{
+ struct exynos_xhci *ctx = dev_get_priv(dev);
+ int ret;
+
+ ret = xhci_deregister(dev);
+ if (ret)
+ return ret;
+ exynos_xhci_core_exit(ctx);
+
+ return 0;
+}
+
+static const struct udevice_id xhci_usb_ids[] = {
+ { .compatible = "samsung,exynos5250-xhci" },
+ { }
+};
+
+U_BOOT_DRIVER(usb_xhci) = {
+ .name = "xhci_exynos",
+ .id = UCLASS_USB,
+ .of_match = xhci_usb_ids,
+ .ofdata_to_platdata = xhci_usb_ofdata_to_platdata,
+ .probe = xhci_usb_probe,
+ .remove = xhci_usb_remove,
+ .ops = &xhci_usb_ops,
+ .platdata_auto_alloc_size = sizeof(struct exynos_xhci_platdata),
+ .priv_auto_alloc_size = sizeof(struct exynos_xhci),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
+#endif