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From c9580261d79d8d1664fbd2da52dcd2148da9ef14 Mon Sep 17 00:00:00 2001
From: Radek Polak <psonek2@seznam.cz>
Date: Fri, 9 Apr 2010 09:18:02 +0200
Subject: [PATCH 04/14] ar6000_delay.patch
patch from https://docs.openmoko.org/trac/ticket/2327 - wifi is working good
(100% until now) for me with this patch.
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
arch/arm/mach-s3c2442/gta02-pm-usbhost.c | 174 ++++++++++++++++++++++++++++++
drivers/ar6000/hif/hif2.c | 2 +
2 files changed, 176 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-s3c2442/gta02-pm-usbhost.c
diff --git a/arch/arm/mach-s3c2442/gta02-pm-usbhost.c b/arch/arm/mach-s3c2442/gta02-pm-usbhost.c
new file mode 100644
index 0000000..233340a
--- /dev/null
+++ b/arch/arm/mach-s3c2442/gta02-pm-usbhost.c
@@ -0,0 +1,174 @@
+/*
+ * USBHOST Management code for the Openmoko Freerunner GSM Phone
+ *
+ * (C) 2007 by Openmoko Inc.
+ * Author: Harald Welte <laforge@openmoko.org>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/console.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/regulator/consumer.h>
+
+#include <mach/gpio.h>
+#include <asm/mach-types.h>
+
+#include <mach/hardware.h>
+
+#include <mach/gta02.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-gpioj.h>
+
+static struct regulator *gta02_usbhost_regulator;
+
+static ssize_t usbhost_read(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ if (!strcmp(attr->attr.name, "power_on")) {
+ if (regulator_is_enabled(gta02_usbhost_regulator))
+ goto out_1;
+ }
+
+ return strlcpy(buf, "0\n", 3);
+out_1:
+ return strlcpy(buf, "1\n", 3);
+}
+
+static void usbhost_on_off(struct device *dev, int on)
+{
+
+ on = !!on;
+
+ if (on == regulator_is_enabled(gta02_usbhost_regulator))
+ return;
+
+ if (!on) {
+ regulator_disable(gta02_usbhost_regulator);
+ return;
+ }
+
+ regulator_enable(gta02_usbhost_regulator);
+}
+
+static ssize_t usbhost_write(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long on = simple_strtoul(buf, NULL, 10);
+
+ if (!strcmp(attr->attr.name, "power_on")) {
+ usbhost_on_off(dev, on);
+
+ return count;
+ }
+
+ return count;
+}
+
+static DEVICE_ATTR(power_on, 0644, usbhost_read, usbhost_write);
+
+#ifdef CONFIG_PM
+
+static int gta02_usbhost_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static int gta02_usbhost_suspend_late(struct device *dev)
+{
+ return 0;
+}
+
+static int gta02_usbhost_resume(struct device *dev)
+{
+ return 0;
+}
+
+static struct dev_pm_ops gta02_usbhost_pm_ops = {
+ .suspend = gta02_usbhost_suspend,
+ .suspend_noirq = gta02_usbhost_suspend_late,
+ .resume = gta02_usbhost_resume,
+};
+
+#define GTA02_USBHOST_PM_OPS (>a02_usbhost_pm_ops)
+
+#else
+#define GTA02_USBHOST_PM_OPS NULL
+#endif /* CONFIG_PM */
+
+static struct attribute *gta02_usbhost_sysfs_entries[] = {
+ &dev_attr_power_on.attr,
+ NULL
+};
+
+static struct attribute_group gta02_usbhost_attr_group = {
+ .name = NULL,
+ .attrs = gta02_usbhost_sysfs_entries,
+};
+
+static int __init gta02_usbhost_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ gta02_usbhost_regulator = regulator_get_exclusive(&pdev->dev, "USBHOST");
+
+ if (IS_ERR(gta02_usbhost_regulator)) {
+ ret = PTR_ERR(gta02_usbhost_regulator);
+ dev_err(&pdev->dev, "Failed to get regulator: %d\n", ret);
+ return ret;
+ }
+
+ ret = sysfs_create_group(&pdev->dev.kobj, >a02_usbhost_attr_group);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to create sysfs entries: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int gta02_usbhost_remove(struct platform_device *pdev)
+{
+ usbhost_on_off(&pdev->dev, 0);
+
+ sysfs_remove_group(&pdev->dev.kobj, >a02_usbhost_attr_group);
+ regulator_put(gta02_usbhost_regulator);
+
+ return 0;
+}
+
+static struct platform_driver gta02_usbhost_driver = {
+ .probe = gta02_usbhost_probe,
+ .remove = gta02_usbhost_remove,
+ .driver = {
+ .name = "gta02-pm-usbhost",
+ .pm = GTA02_USBHOST_PM_OPS,
+ },
+};
+
+static int __devinit gta02_usbhost_init(void)
+{
+ return platform_driver_register(>a02_usbhost_driver);
+}
+module_init(gta02_usbhost_init);
+
+static void gta02_usbhost_exit(void)
+{
+ platform_driver_unregister(>a02_usbhost_driver);
+}
+module_exit(gta02_usbhost_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
+MODULE_DESCRIPTION("Openmoko Freerunner USBHOST Power Management");
diff --git a/drivers/ar6000/hif/hif2.c b/drivers/ar6000/hif/hif2.c
index 386d96e..90178d0 100644
--- a/drivers/ar6000/hif/hif2.c
+++ b/drivers/ar6000/hif/hif2.c
@@ -517,6 +517,8 @@ static int ar6000_do_activate(struct hif_device *hif)
goto out_func_ready;
}
+ mdelay (10);
+
ret = htcCallbacks.deviceInsertedHandler(hif);
if (ret == A_OK)
return 0;
--
1.7.1
|
