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at91: add ohci support 

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD 2011-09-19 14:15:47 +02:00 committed by Sascha Hauer
parent 6a24579000
commit 413c5a9f07
8 changed files with 204 additions and 0 deletions
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18
arch/arm/mach-at91/at91rm9200_devices.c
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@ -25,6 +25,24 @@ void at91_add_device_sdram(u32 size)
arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size);
}
/* --------------------------------------------------------------------
* USB Host
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI)
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
{
if (!data)
return;
add_generic_device("at91_ohci", -1, NULL, AT91RM9200_UHP_BASE, 1024 * 1024,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
#endif
/* --------------------------------------------------------------------
* Ethernet
* -------------------------------------------------------------------- */

13
arch/arm/mach-at91/at91sam9260_devices.c
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@ -26,6 +26,19 @@ void at91_add_device_sdram(u32 size)
arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size);
}
#if defined(CONFIG_USB_OHCI)
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
{
if (!data)
return;
add_generic_device("at91_ohci", -1, NULL, AT91SAM9260_UHP_BASE, 1024 * 1024,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
#endif
#if defined(CONFIG_DRIVER_NET_MACB)
void at91_add_device_eth(struct at91_ether_platform_data *data)
{

17
arch/arm/mach-at91/at91sam9261_devices.c
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@ -26,6 +26,23 @@ void at91_add_device_sdram(u32 size)
arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size);
}
/* --------------------------------------------------------------------
* USB Host
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI)
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
{
if (!data)
return;
add_generic_device("at91_ohci", -1, NULL, AT91SAM9261_UHP_BASE, 1024 * 1024,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
#endif
#if defined(CONFIG_NAND_ATMEL)
void at91_add_device_nand(struct atmel_nand_data *data)
{

25
arch/arm/mach-at91/at91sam9263_devices.c
View File

@ -26,6 +26,31 @@ void at91_add_device_sdram(u32 size)
arm_add_mem_device("ram0", AT91_CHIPSELECT_1, size);
}
/* --------------------------------------------------------------------
* USB Host
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI)
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
{
int i;
if (!data)
return;
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
at91_set_gpio_output(data->vbus_pin[i], 0);
}
add_generic_device("at91_ohci", -1, NULL, AT91SAM9263_UHP_BASE, 1024 * 1024,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
#endif
#if defined(CONFIG_DRIVER_NET_MACB)
void at91_add_device_eth(struct at91_ether_platform_data *data)
{

25
arch/arm/mach-at91/at91sam9g45_devices.c
View File

@ -26,6 +26,31 @@ void at91_add_device_sdram(u32 size)
arm_add_mem_device("ram0", AT91_CHIPSELECT_6, size);
}
/* --------------------------------------------------------------------
* USB Host (OHCI)
* -------------------------------------------------------------------- */
#if defined(CONFIG_USB_OHCI)
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data)
{
int i;
if (!data)
return;
/* Enable VBus control for UHP ports */
for (i = 0; i < data->ports; i++) {
if (data->vbus_pin[i])
at91_set_gpio_output(data->vbus_pin[i], 0);
}
add_generic_device("at91_ohci", -1, NULL, AT91SAM9G45_OHCI_BASE, 1024 * 1024,
IORESOURCE_MEM, data);
}
#else
void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data) {}
#endif
#if defined(CONFIG_DRIVER_NET_MACB)
void at91_add_device_eth(struct at91_ether_platform_data *data)
{

7
arch/arm/mach-at91/include/mach/board.h
View File

@ -25,6 +25,13 @@
#include <spi/spi.h>
#include <linux/mtd/mtd.h>
/* USB Host */
struct at91_usbh_data {
u8 ports; /* number of ports on root hub */
u8 vbus_pin[2]; /* port power-control pin */
};
extern void __init at91_add_device_usbh_ohci(struct at91_usbh_data *data);
void atmel_nand_load_image(void *dest, int size, int pagesize, int blocksize);
/* NAND / SmartMedia */

1
drivers/usb/host/Makefile
View File

@ -1,3 +1,4 @@
obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
obj-$(CONFIG_USB_EHCI_OMAP) += ehci-omap.o
obj-$(CONFIG_USB_OHCI) += ohci-hcd.o
obj-$(CONFIG_ARCH_AT91) += ohci-at91.o

98
drivers/usb/host/ohci-at91.c Normal file
View File

@ -0,0 +1,98 @@
/*
* (C) Copyright 2010 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <linux/clk.h>
#include <driver.h>
#include <init.h>
#include <usb/usb.h>
#include <usb/usb_defs.h>
#include <errno.h>
#include <asm/io.h>
#include "ohci.h"
/* interface and function clocks; sometimes also an AHB clock */
static struct clk *iclk, *fclk;
static void at91_start_clock(void)
{
clk_enable(iclk);
clk_enable(fclk);
}
static void at91_stop_clock(void)
{
clk_disable(fclk);
clk_disable(iclk);
}
static int at91_ohci_probe(struct device_d *dev)
{
struct ohci_regs __iomem *regs = (struct ohci_regs __iomem *)dev->resource[0].start;
iclk = clk_get(NULL, "ohci_clk");
fclk = clk_get(NULL, "uhpck");
/*
* Start the USB clocks.
*/
at91_start_clock();
/*
* The USB host controller must remain in reset.
*/
writel(0, &regs->control);
add_generic_device("ohci", -1, NULL, dev->resource[0].start,
dev->resource[0].size, IORESOURCE_MEM, NULL);
return 0;
}
static void at91_ohci_remove(struct device_d *dev)
{
struct ohci_regs __iomem *regs = (struct ohci_regs __iomem *)dev->resource[0].start;
/*
* Put the USB host controller into reset.
*/
writel(0, &regs->control);
/*
* Stop the USB clocks.
*/
at91_stop_clock();
}
static struct driver_d at91_ohci_driver = {
.name = "at91_ohci",
.probe = at91_ohci_probe,
.remove = at91_ohci_remove,
};
static int at91_ohci_init(void)
{
register_driver(&at91_ohci_driver);
return 0;
}
device_initcall(at91_ohci_init);