aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch')
-rwxr-xr-xtarget/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch167
1 files changed, 167 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch b/target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch
new file mode 100755
index 0000000000..0d9253c2e6
--- /dev/null
+++ b/target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch
@@ -0,0 +1,167 @@
+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(&gta01_button_dev);
+ platform_device_register(&gta01_pm_gsm_dev);
++ platform_device_register(&gta02_pm_usbhost_dev);
+
+ mangle_pmu_pdata_by_system_rev();
+ platform_device_register(&gta02_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
+