From: Patrice Chotard <patrice.chot...@st.com>
Add support for on-chip ehci controller available
on STMicrolectronics SoCs.
ehci support will be then available on both type A
USB 2.0 connectors.
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
v3: _ update to use new USB PHY uclass
v2: _ update error messages
_ add remove callback to put core into reset
drivers/usb/host/Kconfig | 9 ++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-sti.c | 116 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 126 insertions(+)
create mode 100644 drivers/usb/host/ehci-sti.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 0bf8274..7c29bf5 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -121,6 +121,15 @@ config USB_EHCI_MSM
This driver supports combination of Chipidea USB controller
and Synapsys USB PHY in host mode only.
+config USB_EHCI_STI
+ bool "Support for STMicroelectronics on-chip EHCI USB controller"
+ depends on ARCH_STI
+ select STI_PHY_USB
+ default y
+ ---help---
+ Enables support for the on-chip EHCI controller on
+ STMicroelectronics SoCs.
+
config USB_EHCI_ZYNQ
bool "Support for Xilinx Zynq on-chip EHCI USB controller"
depends on ARCH_ZYNQ
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 58c0cf5..303aa32 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_USB_EHCI_MARVELL) += ehci-marvell.o
obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o
obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
obj-$(CONFIG_USB_EHCI_SPEAR) += ehci-spear.o
+obj-$(CONFIG_USB_EHCI_STI) += ehci-sti.o
obj-$(CONFIG_USB_EHCI_SUNXI) += ehci-sunxi.o
obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
obj-$(CONFIG_USB_EHCI_VCT) += ehci-vct.o
diff --git a/drivers/usb/host/ehci-sti.c b/drivers/usb/host/ehci-sti.c
new file mode 100644
index 0000000..b417170
--- /dev/null
+++ b/drivers/usb/host/ehci-sti.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2017
+ * Patrice Chotard <patrice.chot...@st.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <dm.h>
+#include <errno.h>
+#include "ehci.h"
+#include <reset-uclass.h>
+#include <usb.h>
+#include <usb_phy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct sti_ehci_priv {
+ struct ehci_ctrl ctrl;
+ struct reset_ctl power_ctl;
+ struct reset_ctl softreset_ctl;
+ struct usb_phy_desc usb_phy;
+};
+
+static int sti_ehci_probe(struct udevice *dev)
+{
+ struct sti_ehci_priv *priv = dev_get_priv(dev);
+ struct ehci_hccr *hccr = priv->ctrl.hccr;
+ struct ehci_hcor *hcor;
+ int ret;
+
+ hccr = (struct ehci_hccr *)dev_get_addr(dev);
+
+ if (hccr == (void *)FDT_ADDR_T_NONE)
+ return -EINVAL;
+
+ ret = reset_get_by_name(dev, "power", &priv->power_ctl);
+ if (ret) {
+ error("can't get power for %s: %d", dev->name, ret);
+ return ret;
+ }
+
+ ret = reset_get_by_name(dev, "softreset", &priv->softreset_ctl);
+ if (ret) {
+ error("can't get soft reset for %s: %d", dev->name, ret);
+ return ret;
+ }
+
+ ret = usb_phy_get_by_name(dev, "usb", &priv->usb_phy);
+ if (ret) {
+ error("USB PHY DT node not found for %s: %d", dev->name, ret);
+ return ret;
+ }
+
+ ret = reset_deassert(&priv->softreset_ctl);
+ if (ret < 0) {
+ error("EHCI soft reset deassert failed: %d", ret);
+ return ret;
+ }
+
+ ret = reset_deassert(&priv->power_ctl);
+ if (ret < 0) {
+ error("EHCI power deassert failed: %d", ret);
+ return ret;
+ }
+
+ ret = usb_phy_init(&priv->usb_phy);
+ if (ret) {
+ error("Can't init USB PHY for %s: %d\n", dev->name, ret);
+ return ret;
+ }
+
+ hcor = (struct ehci_hcor *)((phys_addr_t)hccr +
+ HC_LENGTH(ehci_readl(&(hccr)->cr_capbase)));
+
+ return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST);
+}
+
+static int sti_ehci_remove(struct udevice *dev)
+{
+ struct sti_ehci_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = ehci_deregister(dev);
+ if (ret)
+ return ret;
+
+ ret = reset_assert(&priv->power_ctl);
+ if (ret < 0) {
+ error("EHCI power assert failed: %d", ret);
+ return ret;
+ }
+
+ ret = reset_assert(&priv->softreset_ctl);
+ if (ret < 0)
+ error("EHCI soft reset assert failed: %d", ret);
+
+ return ret;
+}
+
+static const struct udevice_id sti_usb_ids[] = {
+ { .compatible = "st,st-ehci-300x" },
+ { }
+};
+
+U_BOOT_DRIVER(ehci_sti) = {
+ .name = "ehci_sti",
+ .id = UCLASS_USB,
+ .of_match = sti_usb_ids,
+ .probe = sti_ehci_probe,
+ .remove = sti_ehci_remove,
+ .ops = &ehci_usb_ops,
+ .priv_auto_alloc_size = sizeof(struct sti_ehci_priv),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
--
1.9.1
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