diff options
Diffstat (limited to 'drivers/usb/host/ehci-xilinx-of.c')
| -rw-r--r-- | drivers/usb/host/ehci-xilinx-of.c | 60 |
1 files changed, 18 insertions, 42 deletions
diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c index 35c7f90384a6..1d16cfefabd7 100644 --- a/drivers/usb/host/ehci-xilinx-of.c +++ b/drivers/usb/host/ehci-xilinx-of.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * EHCI HCD (Host Controller Driver) for USB. * @@ -8,21 +9,6 @@ * Based on "ehci-ppc-of.c" by Valentine Barshak <vbarshak@ru.mvista.com> * and "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de> * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * */ #include <linux/err.h> @@ -31,6 +17,7 @@ #include <linux/of.h> #include <linux/of_platform.h> #include <linux/of_address.h> +#include <linux/of_irq.h> /** * ehci_xilinx_port_handed_over - hand the port out if failed to enable it @@ -45,6 +32,8 @@ * There are cases when the host controller fails to enable the port due to, * for example, insufficient power that can be supplied to the device from * the USB bus. In those cases, the messages printed here are not helpful. + * + * Return: Always return 0 */ static int ehci_xilinx_port_handed_over(struct usb_hcd *hcd, int portnum) { @@ -59,11 +48,9 @@ static int ehci_xilinx_port_handed_over(struct usb_hcd *hcd, int portnum) dev_warn(hcd->self.controller, "Maybe your device is not a high speed device?\n"); dev_warn(hcd->self.controller, - "The USB host controller does not support full speed " - "nor low speed devices\n"); + "The USB host controller does not support full speed nor low speed devices\n"); dev_warn(hcd->self.controller, - "You can reconfigure the host controller to have " - "full speed support\n"); + "You can reconfigure the host controller to have full speed support\n"); } return 0; @@ -79,7 +66,7 @@ static const struct hc_driver ehci_xilinx_of_hc_driver = { * generic hardware linkage */ .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_DMA | HCD_USB2 | HCD_BH, /* * basic lifecycle operations @@ -125,6 +112,8 @@ static const struct hc_driver ehci_xilinx_of_hc_driver = { * host controller. Because the Xilinx USB host controller can be configured * as HS only or HS/FS only, it checks the configuration in the device tree * entry, and sets an appropriate value for hcd->has_tt. + * + * Return: zero on success, negative error code otherwise */ static int ehci_hcd_xilinx_of_probe(struct platform_device *op) { @@ -155,7 +144,8 @@ static int ehci_hcd_xilinx_of_probe(struct platform_device *op) irq = irq_of_parse_and_map(dn, 0); if (!irq) { - printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__); + dev_err(&op->dev, "%s: irq_of_parse_and_map failed\n", + __FILE__); rv = -EBUSY; goto err_irq; } @@ -191,8 +181,10 @@ static int ehci_hcd_xilinx_of_probe(struct platform_device *op) ehci->caps = hcd->regs + 0x100; rv = usb_add_hcd(hcd, irq, 0); - if (rv == 0) + if (rv == 0) { + device_wakeup_enable(hcd->self.controller); return 0; + } err_irq: usb_put_hcd(hcd); @@ -206,8 +198,10 @@ err_irq: * * Remove the hcd structure, and release resources that has been requested * during probe. + * + * Return: Always return 0 */ -static int ehci_hcd_xilinx_of_remove(struct platform_device *op) +static void ehci_hcd_xilinx_of_remove(struct platform_device *op) { struct usb_hcd *hcd = platform_get_drvdata(op); @@ -216,25 +210,8 @@ static int ehci_hcd_xilinx_of_remove(struct platform_device *op) usb_remove_hcd(hcd); usb_put_hcd(hcd); - - return 0; } -/** - * ehci_hcd_xilinx_of_shutdown - shutdown the hcd - * @op: pointer to platform_device structure that is to be removed - * - * Properly shutdown the hcd, call driver's shutdown routine. - */ -static void ehci_hcd_xilinx_of_shutdown(struct platform_device *op) -{ - struct usb_hcd *hcd = platform_get_drvdata(op); - - if (hcd->driver->shutdown) - hcd->driver->shutdown(hcd); -} - - static const struct of_device_id ehci_hcd_xilinx_of_match[] = { {.compatible = "xlnx,xps-usb-host-1.00.a",}, {}, @@ -244,10 +221,9 @@ MODULE_DEVICE_TABLE(of, ehci_hcd_xilinx_of_match); static struct platform_driver ehci_hcd_xilinx_of_driver = { .probe = ehci_hcd_xilinx_of_probe, .remove = ehci_hcd_xilinx_of_remove, - .shutdown = ehci_hcd_xilinx_of_shutdown, + .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "xilinx-of-ehci", - .owner = THIS_MODULE, .of_match_table = ehci_hcd_xilinx_of_match, }, }; |