diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-s3c2440/mach-gta02.c | 30 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/plat-s3c24xx/gta02_pm_wlan.c | 142 |
3 files changed, 149 insertions, 24 deletions
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c index 302cdd95cef..0ccb7fba850 100644 --- a/arch/arm/mach-s3c2440/mach-gta02.c +++ b/arch/arm/mach-s3c2440/mach-gta02.c @@ -554,6 +554,10 @@ static void gta02_pcf50633_attach_child_devices(struct device *parent_device) platform_device_register(>a01_pm_gps_dev); } +static struct platform_device gta02_pm_wlan_dev = { + .name = "gta02-pm-wlan", +}; + static struct pcf50633_platform_data gta02_pcf_pdata = { .used_features = PCF50633_FEAT_MBC | PCF50633_FEAT_BBC | @@ -869,6 +873,7 @@ static struct platform_device *gta02_devices[] __initdata = { >a02_memconfig_device, >a02_resume_reason_device, &s3c24xx_pwm_device, + >a02_pm_wlan_dev, /* not dependent on PMU */ }; @@ -1605,30 +1610,7 @@ static void __init gta02_machine_init(void) s3c24xx_udc_set_platdata(>a02_udc_cfg); set_s3c2410ts_info(>a02_ts_cfg); - - /* FIXME: hardcoded WLAN module power-up */ - s3c2410_gpio_cfgpin(GTA02_CHIP_PWD, S3C2410_GPIO_OUTPUT); - - /* Power is down */ - s3c2410_gpio_setpin(GTA02_CHIP_PWD, 1); - mdelay(100); - - switch (system_rev) { - case GTA02v1_SYSTEM_REV: - s3c2410_gpio_setpin(GTA02_CHIP_PWD, 0); - break; - default: - /* Chip is in reset state */ - s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 0); - s3c2410_gpio_cfgpin(GTA02_GPIO_nWLAN_RESET, S3C2410_GPIO_OUTPUT); - mdelay(100); - /* Power is up */ - s3c2410_gpio_setpin(GTA02_CHIP_PWD, 0); - mdelay(100); - /* Chip is out of reset */ - s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 1); - break; - } + mangle_glamo_res_by_system_rev(); platform_device_register(>a02_glamo_dev); diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile index fafd153374f..065b951aa3b 100644 --- a/arch/arm/plat-s3c24xx/Makefile +++ b/arch/arm/plat-s3c24xx/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_MACH_NEO1973) += neo1973_version.o \ neo1973_pm_gsm.o \ neo1973_pm_gps.o \ neo1973_pm_bt.o \ + gta02_pm_wlan.o \ neo1973_shadow.o \ neo1973_pm_resume_reason.o \ neo1973_memconfig.o diff --git a/arch/arm/plat-s3c24xx/gta02_pm_wlan.c b/arch/arm/plat-s3c24xx/gta02_pm_wlan.c new file mode 100644 index 00000000000..954015e4c71 --- /dev/null +++ b/arch/arm/plat-s3c24xx/gta02_pm_wlan.c @@ -0,0 +1,142 @@ +/* + * GTA02 WLAN power management + * + * (C) 2008 by Openmoko Inc. + * Author: Andy Green <andy@openmoko.com> + * 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 <mach/hardware.h> +#include <asm/mach-types.h> +#include <asm/plat-s3c24xx/neo1973.h> + +#include <mach/gta02.h> +#include <mach/regs-gpio.h> +#include <mach/regs-gpioj.h> + +#include <linux/delay.h> + +static ssize_t gta02_wlan_read(struct device *dev, + struct device_attribute *attr, char *buf) +{ + if (s3c2410_gpio_getpin(GTA02_CHIP_PWD)) + return strlcpy(buf, "0\n", 3); + + return strlcpy(buf, "1\n", 3); +} + +static ssize_t gta02_wlan_write(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long on = simple_strtoul(buf, NULL, 10) & 1; + + if (!on) { + s3c2410_gpio_setpin(GTA02_CHIP_PWD, 1); + s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 0); + + return count; + } + + /* power up sequencing */ + + s3c2410_gpio_setpin(GTA02_CHIP_PWD, 1); + s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 0); + msleep(100); + s3c2410_gpio_setpin(GTA02_CHIP_PWD, 0); + msleep(100); + s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 1); + + return count; +} + +static DEVICE_ATTR(power_on, 0644, gta02_wlan_read, gta02_wlan_write); + +#ifdef CONFIG_PM +static int gta02_wlan_suspend(struct platform_device *pdev, pm_message_t state) +{ + dev_dbg(&pdev->dev, "suspending\n"); + + return 0; +} + +static int gta02_wlan_resume(struct platform_device *pdev) +{ + dev_dbg(&pdev->dev, "resuming\n"); + + return 0; +} +#else +#define gta02_wlan_suspend NULL +#define gta02_wlan_resume NULL +#endif + +static struct attribute *gta02_wlan_sysfs_entries[] = { + &dev_attr_power_on.attr, + NULL +}; + +static struct attribute_group gta02_wlan_attr_group = { + .name = NULL, + .attrs = gta02_wlan_sysfs_entries, +}; + +static int __init gta02_wlan_probe(struct platform_device *pdev) +{ + if (!machine_is_neo1973_gta02()) + return -EINVAL; + + dev_info(&pdev->dev, "starting\n"); + + /* Power is down */ + s3c2410_gpio_setpin(GTA02_CHIP_PWD, 1); + s3c2410_gpio_cfgpin(GTA02_CHIP_PWD, S3C2410_GPIO_OUTPUT); + /* reset is asserted */ + s3c2410_gpio_setpin(GTA02_GPIO_nWLAN_RESET, 0); + s3c2410_gpio_cfgpin(GTA02_GPIO_nWLAN_RESET, S3C2410_GPIO_OUTPUT); + + return sysfs_create_group(&pdev->dev.kobj, >a02_wlan_attr_group); +} + +static int gta02_wlan_remove(struct platform_device *pdev) +{ + sysfs_remove_group(&pdev->dev.kobj, >a02_wlan_attr_group); + + return 0; +} + +static struct platform_driver gta02_wlan_driver = { + .probe = gta02_wlan_probe, + .remove = gta02_wlan_remove, + .suspend = gta02_wlan_suspend, + .resume = gta02_wlan_resume, + .driver = { + .name = "gta02-pm-wlan", + }, +}; + +static int __devinit gta02_wlan_init(void) +{ + return platform_driver_register(>a02_wlan_driver); +} + +static void gta02_wlan_exit(void) +{ + platform_driver_unregister(>a02_wlan_driver); +} + +module_init(gta02_wlan_init); +module_exit(gta02_wlan_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Andy Green <andy@openmoko.com>"); +MODULE_DESCRIPTION("Openmoko GTA02 WLAN power management"); |