From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from gw6.ovh.net ([213.251.189.206] helo=mail431.ha.ovh.net) by merlin.infradead.org with smtp (Exim 4.76 #1 (Red Hat Linux)) id 1TxNiB-0003NH-No for barebox@lists.infradead.org; Mon, 21 Jan 2013 20:11:24 +0000 From: Jean-Christophe PLAGNIOL-VILLARD Date: Mon, 21 Jan 2013 21:09:51 +0100 Message-Id: <1358798996-26595-4-git-send-email-plagnioj@jcrosoft.com> In-Reply-To: <1358798996-26595-1-git-send-email-plagnioj@jcrosoft.com> References: <20130121200712.GJ26329@game.jcrosoft.org> <1358798996-26595-1-git-send-email-plagnioj@jcrosoft.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 4/9] ehci: add atmel support To: barebox@lists.infradead.org Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- drivers/usb/host/Kconfig | 5 +++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ehci-atmel.c | 96 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 drivers/usb/host/ehci-atmel.c diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 439d8eb..3927d3a 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -6,6 +6,11 @@ config USB_EHCI_OMAP depends on USB_TWL4030 bool "OMAP EHCI driver" +config USB_EHCI_ATMEL + depends on ARCH_AT91 + depends on USB_EHCI + bool "Atmel EHCI driver" + config USB_OHCI bool "OHCI driver" diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 00f5e24..156fc7f 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_USB_EHCI) += ehci-hcd.o obj-$(CONFIG_USB_EHCI_OMAP) += ehci-omap.o +obj-$(CONFIG_USB_EHCI_ATMEL) += ehci-atmel.o obj-$(CONFIG_USB_OHCI) += ohci-hcd.o obj-$(CONFIG_USB_OHCI_AT91) += ohci-at91.o diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c new file mode 100644 index 0000000..5957b8e --- /dev/null +++ b/drivers/usb/host/ehci-atmel.c @@ -0,0 +1,96 @@ +/* + * (C) Copyright 2010 Jean-Christophe PLAGNIOL-VILLARD + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; version 2 of + * the License. + * + * 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ehci.h" + +/* interface and function clocks; sometimes also an AHB clock */ +static struct clk *iclk, *fclk; + +static void atmel_start_clock(void) +{ + clk_enable(iclk); + clk_enable(fclk); +} + +static void atmel_stop_clock(void) +{ + clk_disable(fclk); + clk_disable(iclk); +} + +static int atmel_ehci_probe(struct device_d *dev) +{ + struct ehci_data data; + + iclk = clk_get(dev, "ehci_clk"); + if (IS_ERR(iclk)) { + dev_err(dev, "Error getting interface clock\n"); + return -ENOENT; + } + + fclk = clk_get(dev, "uhpck"); + if (IS_ERR(fclk)) { + dev_err(dev, "Error getting function clock\n"); + return -ENOENT; + } + + /* + * Start the USB clocks. + */ + atmel_start_clock(); + + data.flags = 0; + + data.hccr = dev_request_mem_region(dev, 0); + + ehci_register(dev, &data); + + return 0; +} + +static void atmel_ehci_remove(struct device_d *dev) +{ + /* + * Stop the USB clocks. + */ + atmel_stop_clock(); +} + +static struct driver_d atmel_ehci_driver = { + .name = "atmel-ehci", + .probe = atmel_ehci_probe, + .remove = atmel_ehci_remove, +}; + +static int atmel_ehci_init(void) +{ + platform_driver_register(&atmel_ehci_driver); + return 0; +} +device_initcall(atmel_ehci_init); -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox