diff options
author | Alexey Brodkin <Alexey.Brodkin@synopsys.com> | 2015-12-02 12:32:02 +0300 |
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committer | Marek Vasut <marex@denx.de> | 2015-12-07 02:14:59 +0300 |
commit | 90fbb2823ac6c2deeab6123aa8f8f32408779e64 (patch) | |
tree | 6427d2d8f94120df0c035faed65d9108e19a712e /drivers/usb/host/ehci-generic.c | |
parent | 40c920821d0cbe6a243aa358187aa024c0c1ad5f (diff) | |
download | u-boot-90fbb2823ac6c2deeab6123aa8f8f32408779e64.tar.xz |
usb: add support for generic EHCI devices
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>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
Diffstat (limited to 'drivers/usb/host/ehci-generic.c')
-rw-r--r-- | drivers/usb/host/ehci-generic.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c new file mode 100644 index 0000000000..1292caae4d --- /dev/null +++ b/drivers/usb/host/ehci-generic.c @@ -0,0 +1,50 @@ +/* + * 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 *)((uintptr_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(ehci_generic) = { + .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, +}; |