diff options
| -rw-r--r-- | arch/x86/include/asm/olpc.h | 2 | ||||
| -rw-r--r-- | drivers/platform/x86/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/platform/x86/Makefile | 1 | ||||
| -rw-r--r-- | drivers/platform/x86/xo1-rfkill.c | 85 |
4 files changed, 96 insertions, 0 deletions
diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h index 101229b..42a978c 100644 --- a/arch/x86/include/asm/olpc.h +++ b/arch/x86/include/asm/olpc.h @@ -89,6 +89,8 @@ extern int olpc_ec_mask_unset(uint8_t bits); /* EC commands */ #define EC_FIRMWARE_REV 0x08 +#define EC_WLAN_ENTER_RESET 0x35 +#define EC_WLAN_LEAVE_RESET 0x25 /* SCI source values */ diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index d2d15108..91e431b 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -615,4 +615,12 @@ config INTEL_IPS functionality. If in doubt, say Y here; it will only load on supported platforms. +config XO1_RFKILL + tristate "OLPC XO-1 software RF kill switch" + depends on OLPC + depends on RFKILL + ---help--- + Support for enabling/disabling the WLAN interface on the OLPC XO-1 + laptop. + endif # X86_PLATFORM_DEVICES diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile index c97ac2a..c15e963 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -31,4 +31,5 @@ obj-$(CONFIG_INTEL_SCU_IPC) += intel_scu_ipc.o obj-$(CONFIG_RAR_REGISTER) += intel_rar_register.o obj-$(CONFIG_INTEL_IPS) += intel_ips.o obj-$(CONFIG_GPIO_INTEL_PMIC) += intel_pmic_gpio.o +obj-$(CONFIG_XO1_RFKILL) += xo1-rfkill.o diff --git a/drivers/platform/x86/xo1-rfkill.c b/drivers/platform/x86/xo1-rfkill.c new file mode 100644 index 0000000..e549eee --- /dev/null +++ b/drivers/platform/x86/xo1-rfkill.c @@ -0,0 +1,85 @@ +/* + * Support for rfkill through the OLPC XO-1 laptop embedded controller + * + * Copyright (C) 2010 One Laptop per Child + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/rfkill.h> + +#include <asm/olpc.h> + +static int rfkill_set_block(void *data, bool blocked) +{ + unsigned char cmd; + if (blocked) + cmd = EC_WLAN_ENTER_RESET; + else + cmd = EC_WLAN_LEAVE_RESET; + + return olpc_ec_cmd(cmd, NULL, 0, NULL, 0); +} + +static const struct rfkill_ops rfkill_ops = { + .set_block = rfkill_set_block, +}; + +static int __devinit xo1_rfkill_probe(struct platform_device *pdev) +{ + struct rfkill *rfk; + int r; + + rfk = rfkill_alloc(pdev->name, &pdev->dev, RFKILL_TYPE_WLAN, + &rfkill_ops, NULL); + if (!rfk) + return -ENOMEM; + + r = rfkill_register(rfk); + if (r) { + rfkill_destroy(rfk); + return r; + } + + platform_set_drvdata(pdev, rfk); + return 0; +} + +static int __devexit xo1_rfkill_remove(struct platform_device *pdev) +{ + struct rfkill *rfk = platform_get_drvdata(pdev); + rfkill_unregister(rfk); + rfkill_destroy(rfk); + return 0; +} + +static struct platform_driver xo1_rfkill_driver = { + .driver = { + .name = "xo1-rfkill", + .owner = THIS_MODULE, + }, + .probe = xo1_rfkill_probe, + .remove = __devexit_p(xo1_rfkill_remove), +}; + +static int __init xo1_rfkill_init(void) +{ + return platform_driver_register(&xo1_rfkill_driver); +} + +static void __exit xo1_rfkill_exit(void) +{ + platform_driver_unregister(&xo1_rfkill_driver); +} + +MODULE_AUTHOR("Daniel Drake <dsd@laptop.org>"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:xo1-rfkill"); + +module_init(xo1_rfkill_init); +module_exit(xo1_rfkill_exit); |
