168 lines
5.0 KiB
Diff
Executable File
168 lines
5.0 KiB
Diff
Executable File
From a2f39c5197fbea18417722e5c7d362eaa3bc6210 Mon Sep 17 00:00:00 2001
|
|
From: Andy Green <andy@openmoko.com>
|
|
Date: Fri, 25 Jul 2008 23:06:01 +0100
|
|
Subject: [PATCH] introduce-usb-host-power-control.patch
|
|
|
|
Unless I really really missed the point, there is no support for enabling
|
|
USB Host power for USB host mode. This patch adds a /sys node for GTA02
|
|
that allows control of the charge pump for 5V out on the USB mini connector
|
|
It doesn't change any logical mode in the CPU, just enables (1) and disables
|
|
(0) USB host power.
|
|
|
|
# cat /sys/devices/platform/neo1973-pm-host.0/hostmode
|
|
0
|
|
# echo 1 > /sys/devices/platform/neo1973-pm-host.0/hostmode
|
|
|
|
Signed-off-by: Andy Green <andy@openmoko.com>
|
|
---
|
|
arch/arm/mach-s3c2440/mach-gta02.c | 6 ++
|
|
arch/arm/plat-s3c24xx/Makefile | 2 +-
|
|
arch/arm/plat-s3c24xx/neo1973_pm_host.c | 101 +++++++++++++++++++++++++++++++
|
|
3 files changed, 108 insertions(+), 1 deletions(-)
|
|
create mode 100644 arch/arm/plat-s3c24xx/neo1973_pm_host.c
|
|
|
|
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
|
|
index f18c8fd..5bd68a6 100644
|
|
--- a/arch/arm/mach-s3c2440/mach-gta02.c
|
|
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
|
|
@@ -1030,6 +1030,11 @@ static struct platform_device gta01_pm_gsm_dev = {
|
|
.name = "neo1973-pm-gsm",
|
|
};
|
|
|
|
+static struct platform_device gta02_pm_usbhost_dev = {
|
|
+ .name = "neo1973-pm-host",
|
|
+};
|
|
+
|
|
+
|
|
/* USB */
|
|
static struct s3c2410_hcd_info gta02_usb_info = {
|
|
.port[0] = {
|
|
@@ -1287,6 +1292,7 @@ static void __init gta02_machine_init(void)
|
|
platform_device_register(&s3c_device_spi_acc);
|
|
platform_device_register(>a01_button_dev);
|
|
platform_device_register(>a01_pm_gsm_dev);
|
|
+ platform_device_register(>a02_pm_usbhost_dev);
|
|
|
|
mangle_pmu_pdata_by_system_rev();
|
|
platform_device_register(>a02_pmu_dev);
|
|
diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
|
|
index 6f43aca..d58265f 100644
|
|
--- a/arch/arm/plat-s3c24xx/Makefile
|
|
+++ b/arch/arm/plat-s3c24xx/Makefile
|
|
@@ -29,4 +29,4 @@ obj-$(CONFIG_PM) += pm.o
|
|
obj-$(CONFIG_PM) += sleep.o
|
|
obj-$(CONFIG_S3C2410_DMA) += dma.o
|
|
obj-$(CONFIG_MACH_SMDK) += common-smdk.o
|
|
-obj-$(CONFIG_MACH_NEO1973) += neo1973_pm_gsm.o neo1973_pm_gps.o neo1973_pm_bt.o
|
|
+obj-$(CONFIG_MACH_NEO1973) += neo1973_pm_host.o neo1973_pm_gsm.o neo1973_pm_gps.o neo1973_pm_bt.o
|
|
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_host.c b/arch/arm/plat-s3c24xx/neo1973_pm_host.c
|
|
new file mode 100644
|
|
index 0000000..4eae341
|
|
--- /dev/null
|
|
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_host.c
|
|
@@ -0,0 +1,101 @@
|
|
+/*
|
|
+ * Bluetooth PM code for the FIC Neo1973 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 <asm/hardware.h>
|
|
+#include <asm/mach-types.h>
|
|
+
|
|
+#ifdef CONFIG_MACH_NEO1973_GTA02
|
|
+#include <asm/arch/gta02.h>
|
|
+#include <linux/pcf50633.h>
|
|
+
|
|
+static ssize_t pm_host_read(struct device *dev, struct device_attribute *attr,
|
|
+ char *buf)
|
|
+{
|
|
+ return sprintf(buf, "%d\n",
|
|
+ pcf50633_gpio_get(pcf50633_global, PCF50633_GPO));
|
|
+}
|
|
+
|
|
+static ssize_t pm_host_write(struct device *dev, struct device_attribute *attr,
|
|
+ const char *buf, size_t count)
|
|
+{
|
|
+ unsigned long on = simple_strtoul(buf, NULL, 10);
|
|
+
|
|
+ pcf50633_gpio_set(pcf50633_global, PCF50633_GPO, on);
|
|
+
|
|
+ return count;
|
|
+}
|
|
+
|
|
+static DEVICE_ATTR(hostmode, 0644, pm_host_read, pm_host_write);
|
|
+
|
|
+static struct attribute *neo1973_pm_host_sysfs_entries[] = {
|
|
+ &dev_attr_hostmode.attr,
|
|
+ NULL
|
|
+};
|
|
+
|
|
+static struct attribute_group neo1973_pm_host_attr_group = {
|
|
+ .name = NULL,
|
|
+ .attrs = neo1973_pm_host_sysfs_entries,
|
|
+};
|
|
+
|
|
+static int __init neo1973_pm_host_probe(struct platform_device *pdev)
|
|
+{
|
|
+ dev_info(&pdev->dev, "starting\n");
|
|
+
|
|
+ switch (machine_arch_type) {
|
|
+#ifdef CONFIG_MACH_NEO1973_GTA01
|
|
+ case MACH_TYPE_NEO1973_GTA01:
|
|
+ return -EINVAL;
|
|
+#endif /* CONFIG_MACH_NEO1973_GTA01 */
|
|
+ default:
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ return sysfs_create_group(&pdev->dev.kobj, &neo1973_pm_host_attr_group);
|
|
+}
|
|
+
|
|
+static int neo1973_pm_host_remove(struct platform_device *pdev)
|
|
+{
|
|
+ sysfs_remove_group(&pdev->dev.kobj, &neo1973_pm_host_attr_group);
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct platform_driver neo1973_pm_host_driver = {
|
|
+ .probe = neo1973_pm_host_probe,
|
|
+ .remove = neo1973_pm_host_remove,
|
|
+ .driver = {
|
|
+ .name = "neo1973-pm-host",
|
|
+ },
|
|
+};
|
|
+
|
|
+static int __devinit neo1973_pm_host_init(void)
|
|
+{
|
|
+ return platform_driver_register(&neo1973_pm_host_driver);
|
|
+}
|
|
+
|
|
+static void neo1973_pm_host_exit(void)
|
|
+{
|
|
+ platform_driver_unregister(&neo1973_pm_host_driver);
|
|
+}
|
|
+
|
|
+module_init(neo1973_pm_host_init);
|
|
+module_exit(neo1973_pm_host_exit);
|
|
+
|
|
+MODULE_LICENSE("GPL");
|
|
+MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
|
|
+MODULE_DESCRIPTION("Neo1973 USB Host Power Management");
|
|
+#endif
|
|
--
|
|
1.5.6.3
|
|
|