From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: [PATCH] Lenovo IdeaPAD ACPI driver Date: Tue, 10 Aug 2010 23:52:38 +0100 Message-ID: <1281480758.5887.33.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from casper.infradead.org ([85.118.1.10]:47425 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756150Ab0HJWwo (ORCPT ); Tue, 10 Aug 2010 18:52:44 -0400 Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: mjg59@srcf.ucam.org Cc: platform-driver-x86@vger.kernel.org Signed-off-by: David Woodhouse --- drivers/platform/x86/Kconfig | 7 + drivers/platform/x86/Makefile | 1 + drivers/platform/x86/ideapad_acpi.c | 284 +++++++++++++++++++++++++++= ++++++++ 3 files changed, 292 insertions(+), 0 deletions(-) create mode 100644 drivers/platform/x86/ideapad_acpi.c diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfi= g index 79baa63..044f430 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -219,6 +219,13 @@ config SONYPI_COMPAT ---help--- Build the sonypi driver compatibility code into the sony-laptop dri= ver. =20 +config IDEAPAD_ACPI + tristate "Lenovo IdeaPad ACPI Laptop Extras" + depends on ACPI + depends on RFKILL + help + This is a driver for the rfkill switches on Lenovo IdeaPad netbooks= =2E + config THINKPAD_ACPI tristate "ThinkPad ACPI Laptop Extras" depends on ACPI diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makef= ile index 4744c77..85fb2b84 100644 --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_ACERHDF) +=3D acerhdf.o obj-$(CONFIG_HP_WMI) +=3D hp-wmi.o obj-$(CONFIG_TC1100_WMI) +=3D tc1100-wmi.o obj-$(CONFIG_SONY_LAPTOP) +=3D sony-laptop.o +obj-$(CONFIG_IDEAPAD_ACPI) +=3D ideapad_acpi.o obj-$(CONFIG_THINKPAD_ACPI) +=3D thinkpad_acpi.o obj-$(CONFIG_FUJITSU_LAPTOP) +=3D fujitsu-laptop.o obj-$(CONFIG_PANASONIC_LAPTOP) +=3D panasonic-laptop.o diff --git a/drivers/platform/x86/ideapad_acpi.c b/drivers/platform/x86= /ideapad_acpi.c new file mode 100644 index 0000000..26a29d4 --- /dev/null +++ b/drivers/platform/x86/ideapad_acpi.c @@ -0,0 +1,284 @@ +/* + * ideapad_acpi.c - Lenovo IdeaPad ACPI Extras + * + * Copyright =C2=A9 2010 Intel Corporation + * Copyright =C2=A9 2010 David Woodhouse + * + * This program is free software; you can redistribute it and/or modi= fy + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define IDEAPAD_DEV_CAMERA 0 +#define IDEAPAD_DEV_WLAN 1 +#define IDEAPAD_DEV_BLUETOOTH 2 +#define IDEAPAD_DEV_3G 3 +#define IDEAPAD_DEV_KILLSW 4 + +static struct rfkill *ideapad_rfkill[5]; + +static const char *ideapad_rfk_names[] =3D { + "ideapad_camera", "ideapad_wlan", "ideapad_bluetooth", "ideapad_3g", = "ideapad_rfkill" +}; +static const int ideapad_rfk_types[] =3D { + 0, RFKILL_TYPE_WLAN, RFKILL_TYPE_BLUETOOTH, RFKILL_TYPE_WWAN, RFKILL_= TYPE_WLAN +}; + +static int ideapad_dev_exists(int device) +{ + acpi_status status; + union acpi_object in_param; + struct acpi_object_list input =3D { 1, &in_param }; + struct acpi_buffer output; + union acpi_object out_obj; + + output.length =3D sizeof(out_obj); + output.pointer =3D &out_obj; + + in_param.type =3D ACPI_TYPE_INTEGER; + in_param.integer.value =3D device + 1; + + status =3D acpi_evaluate_object(NULL, "\\_SB_.DECN", &input, &output)= ; + if (ACPI_FAILURE(status)) { + printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method failed %d. Is this a= n IdeaPAD?\n", status); + return -ENODEV; + } + if (out_obj.type !=3D ACPI_TYPE_INTEGER) { + printk(KERN_WARNING "IdeaPAD \\_SB_.DECN method returned unexpected = type\n"); + return -ENODEV; + } + return out_obj.integer.value; +} + +static int ideapad_dev_get_state(int device) +{ + acpi_status status; + union acpi_object in_param; + struct acpi_object_list input =3D { 1, &in_param }; + struct acpi_buffer output; + union acpi_object out_obj; + + output.length =3D sizeof(out_obj); + output.pointer =3D &out_obj; + + in_param.type =3D ACPI_TYPE_INTEGER; + in_param.integer.value =3D device + 1; + + status =3D acpi_evaluate_object(NULL, "\\_SB_.GECN", &input, &output)= ; + if (ACPI_FAILURE(status)) { + printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method failed %d\n", status= ); + return -ENODEV; + } + if (out_obj.type !=3D ACPI_TYPE_INTEGER) { + printk(KERN_WARNING "IdeaPAD \\_SB_.GECN method returned unexpected = type\n"); + return -ENODEV; + } + return out_obj.integer.value; +} + +static int ideapad_dev_set_state(int device, int state) +{ + acpi_status status; + union acpi_object in_params[2]; + struct acpi_object_list input =3D { 2, in_params }; + + in_params[0].type =3D ACPI_TYPE_INTEGER; + in_params[0].integer.value =3D device + 1; + in_params[1].type =3D ACPI_TYPE_INTEGER; + in_params[1].integer.value =3D state; + + status =3D acpi_evaluate_object(NULL, "\\_SB_.SECN", &input, NULL); + if (ACPI_FAILURE(status)) { + printk(KERN_WARNING "IdeaPAD \\_SB_.SECN method failed %d\n", status= ); + return -ENODEV; + } + return 0; +} +static ssize_t show_ideapad_cam(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int state =3D ideapad_dev_get_state(IDEAPAD_DEV_CAMERA); + if (state < 0) + return state; + + return sprintf(buf, "%d\n", state); +} + +static ssize_t store_ideapad_cam(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret, state; + + if (!count) + return 0; + if (sscanf(buf, "%i", &state) !=3D 1) + return -EINVAL; + ret =3D ideapad_dev_set_state(IDEAPAD_DEV_CAMERA, state); + if (ret < 0) + return ret; + return count; +} + +static DEVICE_ATTR(camera_power, 0644, show_ideapad_cam, store_ideapad= _cam); + +static int ideapad_rfk_set(void *data, bool blocked) +{ + int device =3D (unsigned long)data; + + if (device =3D=3D IDEAPAD_DEV_KILLSW) + return -EINVAL; + return ideapad_dev_set_state(device, !blocked); +} + +static struct rfkill_ops ideapad_rfk_ops =3D { + .set_block =3D ideapad_rfk_set, +}; + +static void ideapad_sync_rfk_state(void) +{ + int hw_blocked =3D !ideapad_dev_get_state(IDEAPAD_DEV_KILLSW); + int i; + + rfkill_set_hw_state(ideapad_rfkill[IDEAPAD_DEV_KILLSW], hw_blocked); + for (i =3D IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) + if (ideapad_rfkill[i]) + rfkill_set_hw_state(ideapad_rfkill[i], hw_blocked); + if (hw_blocked) + return; + + for (i =3D IDEAPAD_DEV_WLAN; i < IDEAPAD_DEV_KILLSW; i++) + if (ideapad_rfkill[i]) + rfkill_set_sw_state(ideapad_rfkill[i], !ideapad_dev_get_state(i)); +} + +static int __init ideapad_register_rfkill(struct acpi_device *device, = int dev) +{ + int ret; + + ideapad_rfkill[dev] =3D rfkill_alloc(ideapad_rfk_names[dev], &device-= >dev, + ideapad_rfk_types[dev], &ideapad_rfk_ops, + (void *)(long)dev); + if (!ideapad_rfkill[dev]) + return -ENOMEM; + + ret =3D rfkill_register(ideapad_rfkill[dev]); + if (ret) { + rfkill_destroy(ideapad_rfkill[dev]); + return ret; + } + return 0; +} + +static void __exit ideapad_unregister_rfkill(int dev) +{ + if (!ideapad_rfkill[dev]) + return; + + rfkill_unregister(ideapad_rfkill[dev]); + rfkill_destroy(ideapad_rfkill[dev]); +} + +static const struct acpi_device_id ideapad_device_ids[] =3D { + { "VPC2004", 0}, + { "", 0}, +}; +MODULE_DEVICE_TABLE(acpi, ideapad_device_ids); + +static int ideapad_acpi_add(struct acpi_device *device) +{ + int i; + int devs_present[5]; + + for (i =3D IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) { + devs_present[i] =3D ideapad_dev_exists(i); + if (devs_present[i] < 0) + return devs_present[i]; + } + + /* The hardware switch is always present */ + devs_present[IDEAPAD_DEV_KILLSW] =3D 1; + + if (devs_present[IDEAPAD_DEV_CAMERA]) { + int ret =3D device_create_file(&device->dev, &dev_attr_camera_power)= ; + if (ret) + return ret; + } + + for (i =3D IDEAPAD_DEV_WLAN; i <=3D IDEAPAD_DEV_KILLSW; i++) { + if (!devs_present[i]) + continue; + + ideapad_register_rfkill(device, i); + } + ideapad_sync_rfk_state(); + return 0; +} + +static int ideapad_acpi_remove(struct acpi_device *device, int type) +{ + int i; + device_remove_file(&device->dev, &dev_attr_camera_power); + for (i =3D 0; i < 5; i++) + ideapad_unregister_rfkill(i); + return 0; +} + +static void ideapad_acpi_notify(struct acpi_device *device, u32 event) +{ + ideapad_sync_rfk_state(); +} + +static struct acpi_driver ideapad_acpi_driver =3D { + .name =3D "ideapad_acpi", + .class =3D "IdeaPad", + .ids =3D ideapad_device_ids, + .ops.add =3D ideapad_acpi_add, + .ops.remove =3D ideapad_acpi_remove, + .ops.notify =3D ideapad_acpi_notify, + .owner =3D THIS_MODULE, +}; + + +static int __init ideapad_acpi_module_init(void) +{ + acpi_bus_register_driver(&ideapad_acpi_driver); + + return 0; +} + + +static void ideapad_acpi_module_exit(void) +{ + acpi_bus_unregister_driver(&ideapad_acpi_driver); + +} +/* Support only the S10-3 for now, until we verify other models */ +MODULE_ALIAS("dmi:bvnLENOVO*:pnS10-3:*"); + +MODULE_AUTHOR("David Woodhouse "); +MODULE_DESCRIPTION("IdeaPad ACPI Extras"); +MODULE_LICENSE("GPL"); + +module_init(ideapad_acpi_module_init); +module_exit(ideapad_acpi_module_exit); --=20 1.7.2.1 --=20 David Woodhouse Open Source Technology Centr= e David.Woodhouse@intel.com Intel Corporatio= n