diff options
| -rw-r--r-- | Documentation/laptops/thinkpad-acpi.txt | 18 | ||||
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 69 |
2 files changed, 78 insertions, 9 deletions
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt index fc04c14de4bb..72a150d8f3df 100644 --- a/Documentation/laptops/thinkpad-acpi.txt +++ b/Documentation/laptops/thinkpad-acpi.txt @@ -1355,6 +1355,24 @@ Sysfs notes: rfkill controller switch "tpacpi_uwb_sw": refer to Documentation/rfkill.txt for details. +Adaptive keyboard +----------------- + +sysfs device attribute: adaptive_kbd_mode + +This sysfs attribute controls the keyboard "face" that will be shown on the +Lenovo X1 Carbon 2nd gen (2014)'s adaptive keyboard. The value can be read +and set. + +1 = Home mode +2 = Web-browser mode +3 = Web-conference mode +4 = Function mode +5 = Layflat mode + +For more details about which buttons will appear depending on the mode, please +review the laptop's user guide: +http://www.lenovo.com/shop/americas/content/user_guides/x1carbon_2_ug_en.pdf Multiple Commands, Module Parameters ------------------------------------ diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 5dea4c270482..ae528cf0b143 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -2918,6 +2918,57 @@ static void hotkey_wakeup_hotunplug_complete_notify_change(void) "wakeup_hotunplug_complete"); } +/* sysfs adaptive kbd mode --------------------------------------------- */ + +static int adaptive_keyboard_get_mode(void); +static int adaptive_keyboard_set_mode(int new_mode); + +enum ADAPTIVE_KEY_MODE { + HOME_MODE, + WEB_BROWSER_MODE, + WEB_CONFERENCE_MODE, + FUNCTION_MODE, + LAYFLAT_MODE +}; + +static ssize_t adaptive_kbd_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u32 current_mode; + + current_mode = adaptive_keyboard_get_mode(); + if (current_mode < 0) + return current_mode; + + return snprintf(buf, PAGE_SIZE, "%d\n", current_mode); +} + +static ssize_t adaptive_kbd_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + unsigned long t; + int res; + + if (parse_strtoul(buf, LAYFLAT_MODE, &t)) + return -EINVAL; + + res = adaptive_keyboard_set_mode(t); + return (res < 0) ? res : count; +} + +static DEVICE_ATTR_RW(adaptive_kbd_mode); + +static struct attribute *adaptive_kbd_attributes[] = { + &dev_attr_adaptive_kbd_mode.attr, + NULL +}; + +static const struct attribute_group adaptive_kbd_attr_group = { + .attrs = adaptive_kbd_attributes, +}; + /* --------------------------------------------------------------------- */ static struct attribute *hotkey_attributes[] __initdata = { @@ -3233,8 +3284,13 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) * Lenovo Carbon X1 2014 (2nd Gen). */ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { - if ((hkeyv >> 8) == 2) + if ((hkeyv >> 8) == 2) { tp_features.has_adaptive_kbd = true; + res = sysfs_create_group(&tpacpi_pdev->dev.kobj, + &adaptive_kbd_attr_group); + if (res) + goto err_exit; + } } quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, @@ -3447,6 +3503,9 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) err_exit: delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); + sysfs_remove_group(&tpacpi_pdev->dev.kobj, + &adaptive_kbd_attr_group); + hotkey_dev_attributes = NULL; return (res < 0) ? res : 1; @@ -3459,14 +3518,6 @@ err_exit: * Will consider support rest of modes in future. * */ -enum ADAPTIVE_KEY_MODE { - HOME_MODE, - WEB_BROWSER_MODE, - WEB_CONFERENCE_MODE, - FUNCTION_MODE, - LAYFLAT_MODE -}; - static const int adaptive_keyboard_modes[] = { HOME_MODE, /* WEB_BROWSER_MODE = 2, |