This driver is meant to be used with any EHCI-compatible host controller in case if there's no need for platform-specific glue such as setup of controller or PHY's power mode via GPIOs etc.
Signed-off-by: Alexey Brodkin abrodkin@synopsys.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Marek Vasut marex@denx.de Cc: Stephen Warren swarren@nvidia.com ---
Changes compared to v1: * Updated commit message with removal of Synopsys board mention * Cleaned-up ehci_usb_remove()
drivers/usb/host/Kconfig | 7 ++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-generic.c | 51 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+) create mode 100644 drivers/usb/host/ehci-generic.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 2a2bffe..a500578 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -73,4 +73,11 @@ config USB_EHCI_UNIPHIER ---help--- Enables support for the on-chip EHCI controller on UniPhier SoCs.
+config USB_EHCI_GENERIC + bool "Support for generic EHCI USB controller" + depends on OF_CONTROL + default y + ---help--- + Enables support for generic EHCI controller. + endif diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index f70f38c..b9b4471 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -32,6 +32,7 @@ else obj-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o endif obj-$(CONFIG_USB_EHCI_FARADAY) += ehci-faraday.o +obj-$(CONFIG_USB_EHCI_GENERIC) += ehci-generic.o obj-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_EHCI_MXS) += ehci-mxs.o diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c new file mode 100644 index 0000000..f0e2b85 --- /dev/null +++ b/drivers/usb/host/ehci-generic.c @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2015 Alexey Brodkin abrodkin@synopsys.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include "ehci.h" + +/* + * Even though here we don't explicitly use "struct ehci_ctrl" + * ehci_register() expects it to be the first thing that resides in + * device's private data. + */ +struct generic_ehci { + struct ehci_ctrl ctrl; +}; + +static int ehci_usb_probe(struct udevice *dev) +{ + struct ehci_hccr *hccr = (struct ehci_hccr *)dev_get_addr(dev); + struct ehci_hcor *hcor; + + hcor = (struct ehci_hcor *)((uint32_t)hccr + + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); + + return ehci_register(dev, hccr, hcor, NULL, 0, USB_INIT_HOST); +} + +static int ehci_usb_remove(struct udevice *dev) +{ + return ehci_deregister(dev); +} + +static const struct udevice_id ehci_usb_ids[] = { + { .compatible = "generic-ehci" }, + { } +}; + +U_BOOT_DRIVER(usb_ehci) = { + .name = "ehci_generic", + .id = UCLASS_USB, + .of_match = ehci_usb_ids, + .probe = ehci_usb_probe, + .remove = ehci_usb_remove, + .ops = &ehci_usb_ops, + .priv_auto_alloc_size = sizeof(struct generic_ehci), + .flags = DM_FLAG_ALLOC_PRIV_DMA, +}; +