diff options
Diffstat (limited to 'target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch')
| -rwxr-xr-x | target/linux/s3c24xx/patches/0087-introduce-usb-host-power-control.patch.patch | 167 |
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(>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 + |