Hi Patrick,
On Thu, 26 Sept 2024 at 10:06, Patrick Rudolph patrick.rudolph@9elements.com wrote:
Add support for the generic XHCI driver that contains no SoC specific code. It can be used on platforms that simply work out
SoC-specific
of the box, like on emulated platforms.
out-of-the-box
TEST: Booted on QEMU sbsa machine using the generic xhci driver.
Signed-off-by: Patrick Rudolph patrick.rudolph@9elements.com Reviewed-by: Marek Vasut marex@denx.de Cc: Tom Rini trini@konsulko.com Cc: Marek Vasut marex@denx.de
Changelog v3:
- Drop weak board_xhci_enable()
Changelog v4:
- Use dev_dbg() instead of debug()
drivers/usb/host/Kconfig | 8 ++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/xhci-generic.c | 77 +++++++++++++++++++++++++++++++++ 3 files changed, 86 insertions(+) create mode 100644 drivers/usb/host/xhci-generic.c
Reviewed-by: Simon Glass sjg@chromium.org
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 6e10b629a3..bb5893d56d 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -68,6 +68,14 @@ config USB_XHCI_MVEBU SoCs, which includes Armada8K, Armada3700 and other Armada family SoCs.
+config USB_XHCI_GENERIC
bool "Generic SoC USB 3.0 support"depends on OF_CONTROLdefault nhelpChoose this option to add support for USB 3.0 driver for SoCsthat do not need platform specific code, like on emulated targets.config USB_XHCI_OCTEON bool "Support for Marvell Octeon family on-chip xHCI USB controller" depends on ARCH_OCTEON diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 8dad36f936..9e880195ec 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -50,6 +50,7 @@ obj-$(CONFIG_USB_XHCI_EXYNOS) += xhci-exynos5.o obj-$(CONFIG_USB_XHCI_FSL) += xhci-fsl.o obj-$(CONFIG_USB_XHCI_MTK) += xhci-mtk.o obj-$(CONFIG_USB_XHCI_MVEBU) += xhci-mvebu.o +obj-$(CONFIG_USB_XHCI_GENERIC) += xhci-generic.o obj-$(CONFIG_USB_XHCI_OMAP) += xhci-omap.o obj-$(CONFIG_USB_XHCI_PCI) += xhci-pci.o obj-$(CONFIG_USB_XHCI_RCAR) += xhci-rcar.o diff --git a/drivers/usb/host/xhci-generic.c b/drivers/usb/host/xhci-generic.c new file mode 100644 index 0000000000..5131f37991 --- /dev/null +++ b/drivers/usb/host/xhci-generic.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0+ +/*
- Copyright (C) 2024 9elements GmbH
- GENERIC USB HOST xHCI Controller
- */
+#include <asm/io.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <fdtdec.h> +#include <log.h> +#include <usb.h>
+#include <usb/xhci.h>
+struct generic_xhci_plat {
fdt_addr_t hcd_base;+};
+/**
- Contains pointers to register base addresses
- for the usb controller.
- */
+struct generic_xhci {
struct xhci_ctrl ctrl; /* Needs to come first in this struct! */struct usb_plat usb_plat;struct xhci_hccr *hcd;+};
+static int xhci_usb_probe(struct udevice *dev) +{
struct generic_xhci_plat *plat = dev_get_plat(dev);struct generic_xhci *ctx = dev_get_priv(dev);struct xhci_hcor *hcor;int len;ctx->hcd = (struct xhci_hccr *)phys_to_virt(plat->hcd_base);len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase));hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len);return xhci_register(dev, ctx->hcd, hcor);+}
+static int xhci_usb_of_to_plat(struct udevice *dev) +{
struct generic_xhci_plat *plat = dev_get_plat(dev);/** Get the base address for XHCI controller from the device node*/plat->hcd_base = dev_read_addr(dev);if (plat->hcd_base == FDT_ADDR_T_NONE) {dev_dbg(dev, "Can't get the XHCI register base address\n");return -ENXIO;}return 0;+}
+static const struct udevice_id xhci_usb_ids[] = {
{ .compatible = "generic-xhci" },{ }+};
+U_BOOT_DRIVER(usb_xhci) = {
.name = "xhci_generic",.id = UCLASS_USB,.of_match = xhci_usb_ids,.of_to_plat = xhci_usb_of_to_plat,.probe = xhci_usb_probe,.remove = xhci_deregister,.ops = &xhci_usb_ops,.plat_auto = sizeof(struct generic_xhci_plat),.priv_auto = sizeof(struct generic_xhci),.flags = DM_FLAG_ALLOC_PRIV_DMA,+};
2.46.0