v8: added `extended = false;` line 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 <o2g.org...@gmail.com> --- MAINTAINERS | 7 + drivers/input/misc/Kconfig | 9 + drivers/input/misc/Makefile | 1 + drivers/input/misc/ideapad_slidebar.c | 332 ++++++++++++++++++++++++++++++++++ 4 files changed, 349 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 <o2g.org...@gmail.com> +L: linux-in...@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 <b...@alien8.de> L: linux-...@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..1dc090d --- /dev/null +++ b/drivers/input/misc/ideapad_slidebar.c @@ -0,0 +1,332 @@ +/* + * Input driver for slidebars on some Lenovo IdeaPad laptops + * + * Copyright (C) 2013 Andrey Moiseev <o2g.org...@gmail.com> + * + * 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 <linux/module.h> +#include <linux/kernel.h> +#include <linux/dmi.h> +#include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/input.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/i8042.h> + +static bool force; +module_param(force, bool, 0); +MODULE_PARM_DESC(force, "Force driver load, ignore DMI data"); + +static DEFINE_SPINLOCK(io_lock); + +static struct input_dev *slidebar_input_dev; +static struct platform_device *slidebar_platform_dev; + +static unsigned char slidebar_pos_get(void) +{ + int res; + unsigned long flags; + + spin_lock_irqsave(&io_lock, flags); + outb(0xf4, 0xff29); + outb(0xbf, 0xff2a); + res = inb(0xff2b); + spin_unlock_irqrestore(&io_lock, flags); + return res; +} + +static unsigned char slidebar_mode_get(void) +{ + int res; + unsigned long flags; + + spin_lock_irqsave(&io_lock, flags); + outb(0xf7, 0xff29); + outb(0x8b, 0xff2a); + res = inb(0xff2b); + spin_unlock_irqrestore(&io_lock, flags); + return res; +} + +static void slidebar_mode_set(unsigned char mode) +{ + unsigned long flags; + + spin_lock_irqsave(&io_lock, flags); + outb(0xf7, 0xff29); + outb(0x8b, 0xff2a); + outb(mode, 0xff2b); + spin_unlock_irqrestore(&io_lock, flags); +} + +static bool slidebar_i8042_filter(unsigned char data, unsigned char str, + struct serio *port) +{ + static bool extended = false; + + /* Scancodes: e03b on move, e0bb on release */ + if (unlikely(data == 0xe0)) { + extended = true; + return false; + } else if (unlikely(extended && (data == 0x3b))) { + extended = false; + input_report_key(slidebar_input_dev, BTN_TOUCH, 1); + input_report_abs(slidebar_input_dev, ABS_X, slidebar_pos_get()); + input_sync(slidebar_input_dev); + return false; + } else if (unlikely(extended && (data == 0xbb))) { + extended = false; + input_report_key(slidebar_input_dev, BTN_TOUCH, 0); + input_sync(slidebar_input_dev); + return false; + } + return false; +} + +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_attrs[] = { + &dev_attr_slidebar_mode.attr, + NULL +}; + +static struct attribute_group ideapad_attr_group = { + .attrs = ideapad_attrs +}; + +static const struct attribute_group *ideapad_attr_groups[] = { + &ideapad_attr_group, + NULL +}; + +static int probe(struct platform_device* dev) +{ + int err; + + if (!request_region(0xff29, 3, "ideapad_slidebar")) { + pr_err("ideapad_slidebar: IO ports are busy\n"); + return -EBUSY; + } + + slidebar_input_dev = input_allocate_device(); + if (!slidebar_input_dev) { + pr_err("ideapad_slidebar: Not enough memory\n"); + err = -ENOMEM; + goto err_release_ports; + } + + 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_set_abs_params(slidebar_input_dev, ABS_X, 0, 0xff, 0, 0); + + err = i8042_install_filter(slidebar_i8042_filter); + if (err) { + pr_err("ideapad_slidebar: Can't install i8042 filter \n"); + goto err_free_dev; + } + + err = input_register_device(slidebar_input_dev); + if (err) { + pr_err("ideapad_slidebar: Failed to register input device\n"); + goto err_remove_filter; + } + return 0; + +err_remove_filter: + i8042_remove_filter(slidebar_i8042_filter); +err_free_dev: + input_free_device(slidebar_input_dev); +err_release_ports: + release_region(0xff29, 3); + return err; +} + +static int remove(struct platform_device *dev) +{ + i8042_remove_filter(slidebar_i8042_filter); + input_unregister_device(slidebar_input_dev); + release_region(0xff29, 3); + return 0; +} + +static struct platform_driver slidebar_drv = { + .driver = { + .name = "ideapad_slidebar", + .owner = THIS_MODULE, + }, + .probe = probe, + .remove = remove +}; + +static int __init ideapad_dmi_check(const struct dmi_system_id *id) +{ + pr_info("ideapad_slidebar: Laptop model '%s'\n", id->ident); + return 1; +} + +static const struct dmi_system_id ideapad_dmi[] __initconst = { + { + .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 + }, + { NULL, } +}; +MODULE_DEVICE_TABLE(dmi, ideapad_dmi); + +static int __init slidebar_init(void) +{ + int err; + + if (!force && !dmi_check_system(ideapad_dmi)) { + pr_err("ideapad_slidebar: DMI didn't match\n"); + return -ENODEV; + } + + err = platform_driver_register(&slidebar_drv); + if (err) { + pr_err("ideapad_slidebar: Failed to register platform driver\n"); + return err; + } + + slidebar_platform_dev = platform_device_alloc("ideapad_slidebar", -1); + slidebar_platform_dev->dev.groups = ideapad_attr_groups; + if (!slidebar_platform_dev) { + pr_err("ideapad_slidebar: Not enough memory\n"); + goto err_unregister_drv; + } + + err = platform_device_add(slidebar_platform_dev); + if (err) { + pr_err("ideapad_slidebar: Failed to register plarform device\n"); + goto err_free_dev; + } + return 0; + +err_free_dev: + platform_device_put(slidebar_platform_dev); +err_unregister_drv: + platform_driver_unregister(&slidebar_drv); + return err; +} + +static void __exit slidebar_exit(void) +{ + platform_device_unregister(slidebar_platform_dev); + platform_driver_unregister(&slidebar_drv); +} + +module_init(slidebar_init); +module_exit(slidebar_exit); + +MODULE_AUTHOR("Andrey Moiseev <o2g.org...@gmail.com>"); +MODULE_DESCRIPTION("Slidebar input support for some Lenovo IdeaPad laptops"); +MODULE_LICENSE("GPL"); -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
