Hi all, We are working together with Lenovo to enable thinkpad X1 Carbon's fancy feature, Adaptive Keyboard[1] for Linux. Adaptive keyboard has five modes on Windows including Home mode, Web browser mode, Web conference mode, Function mode and Lay-flat mode. We enabled Home mode and Function mode currently. Will try to find out how to enable other modes later. Please review and comment attached patch.
Thanks, Shuduo [1]:http://shop.lenovo.com/us/en/laptops/thinkpad/x-series/x1-carbon/#features >From da9d43beaa23071558a8031950cc21cc93946ec6 Mon Sep 17 00:00:00 2001 From: Shuduo Sang <sangshu...@gmail.com> Date: Mon, 3 Mar 2014 14:29:32 +0800 Subject: [PATCH] support thinkpad X1 Carbon's adaptive keyboard Thinkpad X1 Carbon's adaptive keyboard has five modes including Home mode, Web browser mode, Web conference mode, Function mode and Lay-flat mode. We support Home mode and Function mode currently. Signed-off-by: Bruce Ma <bruce...@canonical.com> Signed-off-by: Shuduo Sang <shuduo.s...@canonical.com> --- drivers/platform/x86/thinkpad_acpi.c | 97 ++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index defb6af..fcb738e 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -3437,6 +3437,101 @@ err_exit: return (res < 0)? res : 1; } +/* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser + * mode, Web conference mode, Function mode and Lay-flat mode. + * We support Home mode and Function mode currently. + * + * Will consider support rest of modes in future. + * + */ +enum ADAPTIVE_KEY_MODE { + HOME_MODE, + WEB_BROWSER_MODE, + WEB_CONFERENCE_MODE, + FUNCTION_MODE, + LAYFLAT_MODE +}; + +int adaptive_keyboard_modes[] = { + HOME_MODE, +/* WEB_BROWSER_MODE = 2, + WEB_CONFERENCE_MODE = 3, */ + FUNCTION_MODE +}; + +#define DFR_CHANGE_ROW 0x101 +#define DFR_SHOW_QUICKVIEW_ROW 0x102 + +/* press Fn key a while second, it will switch to Function Mode. Then + * release Fn key, previous mode be restored. + */ +bool adaptive_keyboard_mode_is_saved; +int adaptive_keybarod_prev_mode; + +static int adaptive_keyboard_get_next_mode(int mode) +{ + int i; + int max_mode = sizeof(adaptive_keyboard_modes)/sizeof(int) - 1; + + for (i = 0; i <= max_mode; i++) { + if (adaptive_keyboard_modes[i] == mode) + break; + } + + if (i >= max_mode) + i = 0; + else + i++; + + return adaptive_keyboard_modes[i]; +} + +static bool adaptive_keyboard_hotkey_notify_hotkey(unsigned int scancode) +{ + u32 current_mode = 0; + int new_mode = 0; + + switch (scancode) { + case DFR_CHANGE_ROW: + if (adaptive_keyboard_mode_is_saved) { + new_mode = adaptive_keybarod_prev_mode; + adaptive_keyboard_mode_is_saved = false; + } else { + if (!acpi_evalf( + hkey_handle, ¤t_mode, + "GTRW", "dd", 0)) { + pr_err("Cannot read adaptive keyboard mode\n"); + return false; + } else { + new_mode = adaptive_keyboard_get_next_mode( + current_mode); + } + } + + if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) + pr_err("Cannot set adaptive keyboard mode\n"); + + return true; + + case DFR_SHOW_QUICKVIEW_ROW: + if (!acpi_evalf(hkey_handle, + &adaptive_keybarod_prev_mode, + "GTRW", "dd", 0)) { + pr_err("Cannot read adaptive keyboard mode\n"); + } else { + adaptive_keyboard_mode_is_saved = true; + + if (!acpi_evalf(hkey_handle, + NULL, "STRW", "vd", FUNCTION_MODE)) + pr_err("Cannot set adaptive keyboard mode\n"); + } + return true; + + default: + return false; + } +} + static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev, bool *ignore_acpi_ev) @@ -3456,6 +3551,8 @@ static bool hotkey_notify_hotkey(const u32 hkey, *ignore_acpi_ev = true; } return true; + } else { + return adaptive_keyboard_hotkey_notify_hotkey(scancode); } return false; } -- 1.9.0 -- 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/
