From: Patrice Chotard patrice.chotard@st.com
Add support for on-chip ohci controller available on STMicrolectronics SoCs. Ohci support will be then available on both type A USB 2.0 connectors.
Signed-off-by: Patrice Chotard patrice.chotard@st.com ---
v2: _ put board specific defines in a separate patch (patch 8)
drivers/usb/host/Kconfig | 9 +++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ohci-sti.c | 90 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) create mode 100644 drivers/usb/host/ohci-sti.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index d66f49e..33ded5d 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -168,6 +168,15 @@ config USB_OHCI_GENERIC ---help--- Enables support for generic OHCI controller.
+config USB_OHCI_STI + bool "Support for STMicroelectronics OHCI USB controller" + depends on ARCH_STI + depends on OF_CONTROL + depends on DM_USB + select USB_HOST + ---help--- + Enables support for the on-chip OHCI controller on STMicroelectronics SoCs. + endif # USB_OHCI_HCD
config USB_UHCI_HCD diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 303aa32..b78e632 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -22,6 +22,7 @@ obj-$(CONFIG_USB_OHCI_EP93XX) += ohci-ep93xx.o obj-$(CONFIG_USB_OHCI_SUNXI) += ohci-sunxi.o obj-$(CONFIG_USB_OHCI_LPC32XX) += ohci-lpc32xx.o obj-$(CONFIG_USB_OHCI_GENERIC) += ohci-generic.o +obj-$(CONFIG_USB_OHCI_STI) += ohci-sti.o
# echi obj-$(CONFIG_USB_EHCI) += ehci-hcd.o diff --git a/drivers/usb/host/ohci-sti.c b/drivers/usb/host/ohci-sti.c new file mode 100644 index 0000000..62b63cd --- /dev/null +++ b/drivers/usb/host/ohci-sti.c @@ -0,0 +1,90 @@ +/* + * Copyright (c) 2017 + * Patrice Chotard patrice.chotard@st.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/io.h> +#include <dm.h> +#include <errno.h> +#include "ohci.h" +#include <reset-uclass.h> +#include <usb.h> + +DECLARE_GLOBAL_DATA_PTR; + +#if !defined(CONFIG_USB_OHCI_NEW) +# error "Generic OHCI driver requires CONFIG_USB_OHCI_NEW" +#endif + +struct sti_ohci_priv { + ohci_t ohci; + struct reset_ctl power_ctl; + struct reset_ctl softreset_ctl; +}; + +static int ohci_usb_probe(struct udevice *dev) +{ + struct sti_ohci_priv *priv = dev_get_priv(dev); + struct ohci_regs *regs; + struct udevice *dev_phy; + int ret, phy_node; + + regs = (struct ohci_regs *)dev_get_addr(dev); + if (regs == (void *)FDT_ADDR_T_NONE) + return -EINVAL; + + ret = reset_get_by_name(dev, "power", &priv->power_ctl); + if (ret) { + error("can't get power reset 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 = reset_deassert(&priv->power_ctl); + if (ret < 0) { + error("OHCI power reset deassert failed: %d", ret); + return ret; + } + + ret = reset_deassert(&priv->softreset_ctl); + if (ret < 0) { + error("OHCI soft reset deassert failed: %d", ret); + return ret; + } + + /* get phy node */ + phy_node = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset, "phys"); + if (phy_node <= 0) { + error("Not found usb phy device\n"); + return -ENODEV; + } + + /* probe associated phy node */ + ret = uclass_get_device_by_of_offset(UCLASS_MISC, phy_node, &dev_phy); + + return ohci_register(dev, regs); +} + +static const struct udevice_id sti_usb_ids[] = { + { .compatible = "st,st-ohci-300x" }, + { } +}; + +U_BOOT_DRIVER(ohci_sti) = { + .name = "ohci_sti", + .id = UCLASS_USB, + .of_match = sti_usb_ids, + .probe = ohci_usb_probe, + .remove = ohci_deregister, + .ops = &ohci_usb_ops, + .priv_auto_alloc_size = sizeof(struct sti_ohci_priv), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +};