From patchwork Sat Aug 10 07:49:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Moiseev X-Patchwork-Id: 2842387 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 1AD38BF546 for ; Sat, 10 Aug 2013 07:49:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7A6D4201B8 for ; Sat, 10 Aug 2013 07:49:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA041201B6 for ; Sat, 10 Aug 2013 07:49:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968355Ab3HJHta (ORCPT ); Sat, 10 Aug 2013 03:49:30 -0400 Received: from mail-lb0-f173.google.com ([209.85.217.173]:36322 "EHLO mail-lb0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968352Ab3HJHt3 (ORCPT ); Sat, 10 Aug 2013 03:49:29 -0400 Received: by mail-lb0-f173.google.com with SMTP id 10so3720427lbf.32 for ; Sat, 10 Aug 2013 00:49:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :content-type:content-transfer-encoding; bh=lIg1KObx1a+tFFO6VSt3dWCbD+2fcUVrfYLviITCKVM=; b=Hb2MvS9cd8hG8uz2kB0mrT8KHJmlqoCq1NEE2/uSopYB7TQKB+sLV0dC0WyQQmKnLV vn8XsP2V5ZqMjVRW5v8aDx4drF4FtQWqyq9jTKJm9htrOeRTPUXocpADgI3X8i4lgN1g Qz13QZNPPayIX7lCChN3Ak7M9EdVXMEc5AeUFIoYj63PxYfXtp43scYnd3oTPDc0DkvK Vc35+obI+LmHkPOynWUnieGOiV9/GID3TEkYrwrHN/prLP59RymDIn9q4FEiXSxawJz5 f7QfmRHgnZXsnDW465rZcS/C7ePpVeA8KlHbKxvrnKvTRs59/b9oXmHP/ujsnhg/8+pr byTQ== X-Received: by 10.152.10.71 with SMTP id g7mr7397203lab.60.1376120967103; Sat, 10 Aug 2013 00:49:27 -0700 (PDT) Received: from [192.168.1.165] (2.196.32.95.dsl-dynamic.vsi.ru. [95.32.196.2]) by mx.google.com with ESMTPSA id db5sm7930020lac.10.2013.08.10.00.49.24 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 10 Aug 2013 00:49:26 -0700 (PDT) Message-ID: <5205F083.6030104@gmail.com> Date: Sat, 10 Aug 2013 11:49:23 +0400 From: Andrey Moiseev User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130806 Thunderbird/17.0.8 MIME-Version: 1.0 To: linux-input@vger.kernel.org CC: dmitry.torokhov@gmail.com, arnoques@gmail.com, russianneuromancer@ya.ru, ike.pan@canonical.com, linux-kernel@vger.kernel.org Subject: [PATCH v4 1/1] input: ideapad_slidebar: new input driver Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP v4: fixed broken BTN_TOUCH events ideapad_slidebar is a new driver which enables slidebars on some Lenovo IdeaPad laptops (the slidebars work with SlideNav/Desktop Navigator under Windows) Fixes this: https://bugzilla.kernel.org/show_bug.cgi?id=16004 Registers 'IdeaPad Slidebar' input device and /sys/devices/platform/ideapad_slidebar/slidebar_mode for switching slidebar's modes. Now works on: IdeaPad Y550, Y550P. May work on (testing and adding new models is needed): Ideapad Y560, Y460, Y450, Y650, and, probably, some others. Driver source: https://github.com/o2genum/ideapad-slidebar.git Patch is generated against current mainline kernel. Signed-off-by: Andrey Moiseev --- MAINTAINERS | 7 + drivers/input/misc/Kconfig | 9 + drivers/input/misc/Makefile | 1 + drivers/input/misc/ideapad_slidebar.c | 378 ++++++++++++++++++++++++++++++++++ 4 files changed, 395 insertions(+) create mode 100644 drivers/input/misc/ideapad_slidebar.c diff --git a/MAINTAINERS b/MAINTAINERS index defc053..2ff3dd8 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4096,6 +4096,13 @@ W: http://launchpad.net/ideapad-laptop S: Maintained F: drivers/platform/x86/ideapad-laptop.c +IDEAPAD LAPTOP SLIDEBAR DRIVER +M: Andrey Moiseev +L: linux-input@vger.kernel.org +W: https://github.com/o2genum/ideapad-slidebar +S: Maintained +F: drivers/input/misc/ideapad_slidebar.c + IDE/ATAPI DRIVERS M: Borislav Petkov L: linux-ide@vger.kernel.org diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 0b541cd..45729a9 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -647,4 +647,13 @@ config INPUT_SIRFSOC_ONKEY If unsure, say N. +config INPUT_IDEAPAD_SLIDEBAR + tristate "IdeaPad Laptop Slidebar" + depends on INPUT + help + Input driver for slidebars on some Lenovo IdeaPad laptops. + + If you have an IdeaPad laptop with a slidebar, say Y or M here. + Module name is ideapad_slidebar. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 829de43..0ebfb6d 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -61,3 +61,4 @@ obj-$(CONFIG_INPUT_WISTRON_BTNS) += wistron_btns.o obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND) += xen-kbdfront.o obj-$(CONFIG_INPUT_YEALINK) += yealink.o +obj-$(CONFIG_INPUT_IDEAPAD_SLIDEBAR) += ideapad_slidebar.o diff --git a/drivers/input/misc/ideapad_slidebar.c b/drivers/input/misc/ideapad_slidebar.c new file mode 100644 index 0000000..1145d7b --- /dev/null +++ b/drivers/input/misc/ideapad_slidebar.c @@ -0,0 +1,378 @@ +/* + * Input driver for slidebars on some Lenovo IdeaPad laptops + * + * Copyright (C) 2013 Andrey Moiseev + * + * Reverse-engineered from Lenovo SlideNav software (SBarHook.dll). + * + * 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. + * + * Trademarks are the property of their respective owners. + */ + +/* Currently tested and works on: + * Lenovo IdeaPad Y550 + * Lenovo IdeaPad Y550P + * + * Other models can be added easily. To test, + * load with 'force' parameter set 'true'. + * + * LEDs blinking and input mode are managed via sysfs, + * (hex, unsigned byte value): + * /sys/devices/platform/ideapad_slidebar/slidebar_mode + * + * The value is in byte range, however, I only figured out + * how bits 0b10011001 work. Some other bits, probably, + * are meaningfull too. + * + * Possible states: + * + * STD_INT, ONMOV_INT, OFF_INT, LAST_POLL, OFF_POLL + * + * Meaning: + * released touched + * STD 'heartbeat' lights follow the finger + * ONMOV no lights lights follow the finger + * LAST at last pos lights follow the finger + * OFF no lights no lights + * + * INT all input events are generated, interrupts are used + * POLL no input events by default, to get them, + * send 0b10000000 (read below) + * + * Commands: write + * + * All | 0b01001 -> STD_INT + * possible | 0b10001 -> ONMOV_INT + * states | 0b01000 -> OFF_INT + * + * | 0b0 -> LAST_POLL + * STD_INT or ONMOV_INT | + * | 0b1 -> STD_INT + * + * | 0b0 -> OFF_POLL + * OFF_INT or OFF_POLL | + * | 0b1 -> OFF_INT + * + * Any state | 0b10000000 -> if the slidebar has updated data, + * produce one input event (last position), + * switch to respective POLL mode + * (like 0x0), if not in POLL mode yet. + * + * Get current state: read + * + * masked by 0x11 read value means: + * + * 0x00 LAST + * 0x01 STD + * 0x10 OFF + * 0x11 ONMOV + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static bool force; +module_param(force, bool, 0); +MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); + +spinlock_t sio_lock = __SPIN_LOCK_UNLOCKED(sio_lock); + +static struct input_dev *slidebar_input_dev; +static struct platform_device *slidebar_platform_dev; + +/* Hardware interacting */ +static int slidebar_pos_get(void) +{ + int res; + unsigned long flags; + spin_lock_irqsave(&sio_lock, flags); + outb(0xf4, 0xff29); + outb(0xbf, 0xff2a); + res = inb(0xff2b); + spin_unlock_irqrestore(&sio_lock, flags); + return res; +} + +static unsigned char slidebar_mode_get(void) +{ + int res; + unsigned long flags; + spin_lock_irqsave(&sio_lock, flags); + outb(0xf7, 0xff29); + outb(0x8b, 0xff2a); + res = inb(0xff2b); + spin_unlock_irqrestore(&sio_lock, flags); + return res; +} + +static void slidebar_mode_set(unsigned char mode) +{ + unsigned long flags; + spin_lock_irqsave(&sio_lock, flags); + outb(0xf7, 0xff29); + outb(0x8b, 0xff2a); + outb(mode, 0xff2b); + spin_unlock_irqrestore(&sio_lock, flags); +} + +/* Listening the keyboard (i8042 filter) */ +static bool slidebar_i8042_filter(unsigned char data, unsigned char str, + struct serio *port) +{ + static bool extended = false, touched = false; + + /* Scancodes: e03b on move, bb on release */ + if (unlikely(data == 0xe0)) { + extended = true; + return false; + } else if (unlikely(extended && (data == 0x3b))) { + extended = false; + if (!touched) + input_report_key(slidebar_input_dev, BTN_TOUCH, 1); + touched = true; + input_report_abs(slidebar_input_dev, ABS_X, slidebar_pos_get()); + input_sync(slidebar_input_dev); + return false; + } else if (unlikely(extended && (data == 0xbb))) { + touched = false; + input_report_key(slidebar_input_dev, BTN_TOUCH, 0); + input_sync(slidebar_input_dev); + } + + return false; +} + +/* Input device */ +static int setup_input_dev(void) +{ + int err; + + slidebar_input_dev = input_allocate_device(); + if (!slidebar_input_dev) { + pr_err("ideapad_slidebar: Not enough memory\n"); + return -ENOMEM; + } + + slidebar_input_dev->name = "IdeaPad Slidebar"; + slidebar_input_dev->id.bustype = BUS_HOST; + slidebar_input_dev->dev.parent = &slidebar_platform_dev->dev; + input_set_capability(slidebar_input_dev, EV_KEY, BTN_TOUCH); + input_set_capability(slidebar_input_dev, EV_ABS, ABS_X); + input_alloc_absinfo(slidebar_input_dev); + input_set_abs_params(slidebar_input_dev, ABS_X, 0, 0xff, 0, 0); + + err = input_register_device(slidebar_input_dev); + if (err) { + pr_err("ideapad_slidebar: Failed to register device\n"); + goto err_free_dev; + } + + err = i8042_install_filter(slidebar_i8042_filter); + if (err) { + pr_err("ideapad_slidebar: Can't install i8042 filter \n"); + goto err_unregister_dev; + } + return 0; + +err_unregister_dev: + input_unregister_device(slidebar_input_dev); +err_free_dev: + input_free_device(slidebar_input_dev); + return err; +} + +static void remove_input_dev(void) +{ + i8042_remove_filter(slidebar_i8042_filter); + input_unregister_device(slidebar_input_dev); + input_free_device(slidebar_input_dev); +} + +/* Sysfs slidebar_mode interface */ +static ssize_t show_slidebar_mode(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return sprintf(buf, "%x\n", slidebar_mode_get()); +} + +static ssize_t store_slidebar_mode(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int mode; + if (!count) + return 0; + + if (sscanf(buf, "%x", &mode) != 1) + return -EINVAL; + + slidebar_mode_set(mode); + return count; +} + +static DEVICE_ATTR(slidebar_mode, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, + show_slidebar_mode, store_slidebar_mode); + +static struct attribute *ideapad_attributes[] = { + &dev_attr_slidebar_mode.attr, + NULL +}; + +static struct attribute_group ideapad_attribute_group = { + .attrs = ideapad_attributes +}; + +static int setup_slidebar_mode_dev(void) +{ + return sysfs_create_group(&slidebar_platform_dev->dev.kobj, + &ideapad_attribute_group); +} + +static void remove_slidebar_mode_dev(void) +{ + return sysfs_remove_group(&slidebar_platform_dev->dev.kobj, + &ideapad_attribute_group); +} + +/* Platform device */ +static int setup_platform_dev(void) +{ + int err; + slidebar_platform_dev = platform_device_alloc("ideapad_slidebar", -1); + if (!slidebar_platform_dev) { + pr_err("ideapad_slidebar: Not enough memory\n"); + return -ENOMEM; + } + + err = platform_device_add(slidebar_platform_dev); + if (err) { + pr_err("ideapad_slidebar: Failed to register plarform device\n"); + goto err_free_platform_device; + } + return 0; + +err_free_platform_device: + platform_device_put(slidebar_platform_dev); + return err; +} + +static void remove_platform_dev(void) +{ + platform_device_del(slidebar_platform_dev); + platform_device_put(slidebar_platform_dev); +} + +/* Platform driver */ +static struct platform_driver slidebar_drv = { + .driver = { + .name = "ideapad_slidebar", + .owner = THIS_MODULE, + }, +}; + +static int register_platform_drv(void) +{ + int err; + err = platform_driver_register(&slidebar_drv); + if (err) + pr_err("ideapad_slidebar: Failed to register platform driver\n"); + + return err; +} + +static void unregister_platform_drv(void) +{ + platform_driver_unregister(&slidebar_drv); +} + +/* DMI */ +static int ideapad_dmi_check(const struct dmi_system_id *id) +{ + pr_info("ideapad_slidebar: Laptop model '%s'\n", id->ident); + return 1; +} + +static struct dmi_system_id __initdata ideapad_dmi_table[] = { + { + .ident = "Lenovo IdeaPad Y550", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "20017"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo IdeaPad Y550") + }, + .callback = ideapad_dmi_check + }, + { + .ident = "Lenovo IdeaPad Y550P", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "20035"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo IdeaPad Y550P") + }, + .callback = ideapad_dmi_check + } +}; + +/* Init and cleanup */ +static int __init slidebar_init(void) +{ + int err; + + if (!force && !dmi_check_system(ideapad_dmi_table)) + return -ENODEV; + + err = setup_platform_dev(); + if (err) + return err; + + err = register_platform_drv(); + if (err) + goto err_remove_platform_dev; + + err = setup_input_dev(); + if (err) + goto err_unregister_platform_drv; + + err = setup_slidebar_mode_dev(); + if (err) + goto err_remove_input_dev; + return 0; + +err_remove_input_dev: + remove_input_dev(); +err_unregister_platform_drv: + unregister_platform_drv(); +err_remove_platform_dev: + remove_platform_dev(); + return err; +} + +static void __exit slidebar_exit(void) +{ + remove_slidebar_mode_dev(); + remove_input_dev(); + remove_platform_dev(); + unregister_platform_drv(); +} + +module_init(slidebar_init); +module_exit(slidebar_exit); + +MODULE_AUTHOR("Andrey Moiseev "); +MODULE_DESCRIPTION("Slidebar input support for some Lenovo IdeaPad laptops"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1"); + +MODULE_ALIAS("dmi:*:svnLENOVO:pn20017:pvrLenovoIdeaPadY550:*"); +MODULE_ALIAS("dmi:*:svnLENOVO:pn20035:pvrLenovoIdeaPadY550P:*");