mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-29 00:05:54 +02:00
fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
90 lines
2.6 KiB
Diff
90 lines
2.6 KiB
Diff
From e98d739947484f7ca2cf0fe017fda73cab63067a Mon Sep 17 00:00:00 2001
|
|
From: mokopatches <mokopatches@openmoko.org>
|
|
Date: Sun, 13 Apr 2008 07:23:54 +0100
|
|
Subject: [PATCH] s3c2410-usb-switch.patch
|
|
|
|
---
|
|
drivers/usb/host/ohci-s3c2410.c | 43 +++++++++++++++++++++++++++++++++++++++
|
|
1 files changed, 43 insertions(+), 0 deletions(-)
|
|
|
|
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
|
|
index 44b79e8..68f5689 100644
|
|
--- a/drivers/usb/host/ohci-s3c2410.c
|
|
+++ b/drivers/usb/host/ohci-s3c2410.c
|
|
@@ -24,6 +24,7 @@
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/arch/usb-control.h>
|
|
+#include <asm/arch/regs-gpio.h>
|
|
|
|
#define valid_port(idx) ((idx) == 1 || (idx) == 2)
|
|
|
|
@@ -308,6 +309,40 @@ static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc)
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
+/* switching of USB pads */
|
|
+static ssize_t show_usb_mode(struct device *dev, struct device_attribute *attr,
|
|
+ char *buf)
|
|
+{
|
|
+ if (__raw_readl(S3C24XX_MISCCR) & S3C2410_MISCCR_USBHOST)
|
|
+ return sprintf(buf, "host\n");
|
|
+
|
|
+ return sprintf(buf, "device\n");
|
|
+}
|
|
+
|
|
+static ssize_t set_usb_mode(struct device *dev, struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ if (!strncmp(buf, "host", 4)) {
|
|
+ printk("s3c2410: changing usb to host\n");
|
|
+ s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST,
|
|
+ S3C2410_MISCCR_USBHOST);
|
|
+ /* FIXME:
|
|
+ * - call machine-specific disable-pullup function i
|
|
+ * - enable +Vbus (if hardware supports it)
|
|
+ */
|
|
+ s3c2410_gpio_setpin(S3C2410_GPB9, 0);
|
|
+ } else if (!strncmp(buf, "device", 6)) {
|
|
+ printk("s3c2410: changing usb to device\n");
|
|
+ s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST, 0);
|
|
+ s3c2410_gpio_setpin(S3C2410_GPB9, 1);
|
|
+ } else
|
|
+ printk("s3c2410: unknown mode\n");
|
|
+ return -EINVAL;
|
|
+ return count;
|
|
+}
|
|
+
|
|
+static DEVICE_ATTR(usb_mode, S_IRUGO | S_IWUSR, show_usb_mode, set_usb_mode);
|
|
+
|
|
/* may be called without controller electrically present */
|
|
/* may be called with controller, bus, and devices active */
|
|
|
|
@@ -325,6 +360,7 @@ static void s3c2410_hcd_oc(struct s3c2410_hcd_info *info, int port_oc)
|
|
static void
|
|
usb_hcd_s3c2410_remove (struct usb_hcd *hcd, struct platform_device *dev)
|
|
{
|
|
+ device_remove_file(&dev->dev, &dev_attr_usb_mode);
|
|
usb_remove_hcd(hcd);
|
|
s3c2410_stop_hc(dev);
|
|
iounmap(hcd->regs);
|
|
@@ -392,8 +428,15 @@ static int usb_hcd_s3c2410_probe (const struct hc_driver *driver,
|
|
if (retval != 0)
|
|
goto err_ioremap;
|
|
|
|
+ retval = device_create_file(&dev->dev, &dev_attr_usb_mode);
|
|
+ if (retval != 0)
|
|
+ goto err_hcd;
|
|
+
|
|
return 0;
|
|
|
|
+ err_hcd:
|
|
+ usb_remove_hcd(hcd);
|
|
+
|
|
err_ioremap:
|
|
s3c2410_stop_hc(dev);
|
|
iounmap(hcd->regs);
|
|
--
|
|
1.5.6.5
|
|
|