/* * Bluetooth PM code for the FIC Neo1973 GSM Phone * * (C) 2007 by OpenMoko Inc. * Author: Harald Welte * 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 #include #include #include #include #include #ifdef CONFIG_MACH_NEO1973_GTA01 #include #include #endif #ifdef CONFIG_MACH_NEO1973_GTA02 #include #include #endif #define DRVMSG "FIC Neo1973 Bluetooth Power Management" static ssize_t bt_read(struct device *dev, struct device_attribute *attr, char *buf) { if (!strcmp(attr->attr.name, "power_on")) { switch (machine_arch_type) { #ifdef CONFIG_MACH_NEO1973_GTA01 case MACH_TYPE_NEO1973_GTA01: if (pcf50606_onoff_get(pcf50606_global, PCF50606_REGULATOR_D1REG) && pcf50606_voltage_get(pcf50606_global, PCF50606_REGULATOR_D1REG) == 3100) goto out_1; break; #endif /* CONFIG_MACH_NEO1973_GTA01 */ #ifdef CONFIG_MACH_NEO1973_GTA02 case MACH_TYPE_NEO1973_GTA02: if (s3c2410_gpio_getpin(GTA02_GPIO_BT_EN)) goto out_1; break; #endif /* CONFIG_MACH_NEO1973_GTA02 */ } } else if (!strcmp(attr->attr.name, "reset")) { switch (machine_arch_type) { #ifdef CONFIG_MACH_NEO1973_GTA01 case MACH_TYPE_NEO1973_GTA01: if (s3c2410_gpio_getpin(GTA01_GPIO_BT_EN) == 0) goto out_1; break; #endif /* CONFIG_MACH_NEO1973_GTA01 */ #ifdef CONFIG_MACH_NEO1973_GTA02 case MACH_TYPE_NEO1973_GTA02: if (s3c2410_gpio_getpin(GTA02_GPIO_BT_EN) == 0) goto out_1; break; #endif /* CONFIG_MACH_NEO1973_GTA02 */ } } return strlcpy(buf, "0\n", 3); out_1: return strlcpy(buf, "1\n", 3); } static ssize_t bt_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long on = simple_strtoul(buf, NULL, 10); unsigned int vol; if (!strcmp(attr->attr.name, "power_on")) { switch (machine_arch_type) { #ifdef CONFIG_MACH_NEO1973_GTA01 case MACH_TYPE_NEO1973_GTA01: /* if we are powering up, assert reset, then power, * then release reset */ if (on) { s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, 0); pcf50606_voltage_set(pcf50606_global, PCF50606_REGULATOR_D1REG, 3100); } pcf50606_onoff_set(pcf50606_global, PCF50606_REGULATOR_D1REG, on); s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, on); break; #endif /* CONFIG_MACH_NEO1973_GTA01 */ #ifdef CONFIG_MACH_NEO1973_GTA02 case MACH_TYPE_NEO1973_GTA02: s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1); if (on) pcf50633_voltage_set(pcf50633_global, PCF50633_REGULATOR_LDO4, 3200); pcf50633_onoff_set(pcf50633_global, PCF50633_REGULATOR_LDO4, on); vol = pcf50633_voltage_get(pcf50633_global, PCF50633_REGULATOR_LDO4); dev_info(dev, "GTA02 Set PCF50633 LDO4 = %d\n", vol); break; #endif /* CONFIG_MACH_NEO1973_GTA02 */ } } else if (!strcmp(attr->attr.name, "reset")) { /* reset is low-active, so we need to invert */ switch (machine_arch_type) { #ifdef CONFIG_MACH_NEO1973_GTA01 case MACH_TYPE_NEO1973_GTA01: s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, on ? 0 : 1); break; #endif /* CONFIG_MACH_NEO1973_GTA01 */ #ifdef CONFIG_MACH_NEO1973_GTA02 case MACH_TYPE_NEO1973_GTA02: s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1); break; #endif /* CONFIG_MACH_NEO1973_GTA02 */ } } return count; } static DEVICE_ATTR(power_on, 0644, bt_read, bt_write); static DEVICE_ATTR(reset, 0644, bt_read, bt_write); #ifdef CONFIG_PM static int gta01_bt_suspend(struct platform_device *pdev, pm_message_t state) { dev_dbg(&pdev->dev, DRVMSG ": suspending\n"); /* FIXME: The PMU should save the PMU status, and the GPIO code should * preserve the GPIO level, so there shouldn't be anything left to do * for us, should there? */ return 0; } static int gta01_bt_resume(struct platform_device *pdev) { dev_dbg(&pdev->dev, DRVMSG ": resuming\n"); return 0; } #else #define gta01_bt_suspend NULL #define gta01_bt_resume NULL #endif static struct attribute *gta01_bt_sysfs_entries[] = { &dev_attr_power_on.attr, &dev_attr_reset.attr, NULL }; static struct attribute_group gta01_bt_attr_group = { .name = NULL, .attrs = gta01_bt_sysfs_entries, }; static int __init gta01_bt_probe(struct platform_device *pdev) { dev_info(&pdev->dev, DRVMSG ": starting\n"); switch (machine_arch_type) { #ifdef CONFIG_MACH_NEO1973_GTA01 case MACH_TYPE_NEO1973_GTA01: /* we make sure that the voltage is off */ pcf50606_onoff_set(pcf50606_global, PCF50606_REGULATOR_D1REG, 0); /* we pull reset to low to make sure that the chip doesn't * drain power through the reset line */ s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, 0); break; #endif /* CONFIG_MACH_NEO1973_GTA01 */ #ifdef CONFIG_MACH_NEO1973_GTA02 case MACH_TYPE_NEO1973_GTA02: /* we make sure that the voltage is off */ pcf50633_onoff_set(pcf50633_global, PCF50633_REGULATOR_LDO4, 0); /* we pull reset to low to make sure that the chip doesn't * drain power through the reset line */ s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, 0); break; #endif /* CONFIG_MACH_NEO1973_GTA02 */ } return sysfs_create_group(&pdev->dev.kobj, >a01_bt_attr_group); } static int gta01_bt_remove(struct platform_device *pdev) { sysfs_remove_group(&pdev->dev.kobj, >a01_bt_attr_group); return 0; } static struct platform_driver gta01_bt_driver = { .probe = gta01_bt_probe, .remove = gta01_bt_remove, .suspend = gta01_bt_suspend, .resume = gta01_bt_resume, .driver = { .name = "neo1973-pm-bt", }, }; static int __devinit gta01_bt_init(void) { return platform_driver_register(>a01_bt_driver); } static void gta01_bt_exit(void) { platform_driver_unregister(>a01_bt_driver); } module_init(gta01_bt_init); module_exit(gta01_bt_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Harald Welte "); MODULE_DESCRIPTION(DRVMSG);