From f23a5bcb70586231b5130a08de965592afdcf9cd Mon Sep 17 00:00:00 2001 From: Bastien Nocera Date: Mon, 2 Mar 2015 14:45:16 +0100 Subject: [PATCH] thinkpad_acpi: Remember adaptive kbd presence Rather than checking on each suspend and resume whether the laptop has an adaptive keyboard, check when the driver is initialised. Signed-off-by: Bastien Nocera Acked-by: Henrique de Moraes Holschuh Signed-off-by: Darren Hart --- drivers/platform/x86/thinkpad_acpi.c | 37 ++++++++++++++-------------- 1 file changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 3b8ceee7c5cb..763aef0e7764 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -319,6 +319,7 @@ static struct { u32 sensors_pdrv_attrs_registered:1; u32 sensors_pdev_attrs_registered:1; u32 hotkey_poll_active:1; + u32 has_adaptive_kbd:1; } tp_features; static struct { @@ -3227,6 +3228,15 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) if (!tp_features.hotkey) return 1; + /* + * Check if we have an adaptive keyboard, like on the + * Lenovo Carbon X1 2014 (2nd Gen). + */ + if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { + if ((hkeyv >> 8) == 2) + tp_features.has_adaptive_kbd = true; + } + quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, ARRAY_SIZE(tpacpi_hotkey_qtable)); @@ -3836,28 +3846,21 @@ static void hotkey_notify(struct ibm_struct *ibm, u32 event) static void hotkey_suspend(void) { - int hkeyv; - /* Do these on suspend, we get the events on early resume! */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; hotkey_autosleep_ack = 0; /* save previous mode of adaptive keyboard of X1 Carbon */ - if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { - if ((hkeyv >> 8) == 2) { - if (!acpi_evalf(hkey_handle, - &adaptive_keyboard_prev_mode, - "GTRW", "dd", 0)) { - pr_err("Cannot read adaptive keyboard mode.\n"); - } + if (tp_features.has_adaptive_kbd) { + if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, + "GTRW", "dd", 0)) { + pr_err("Cannot read adaptive keyboard mode.\n"); } } } static void hotkey_resume(void) { - int hkeyv; - tpacpi_disable_brightness_delay(); if (hotkey_status_set(true) < 0 || @@ -3872,14 +3875,10 @@ static void hotkey_resume(void) hotkey_poll_setup_safe(false); /* restore previous mode of adapive keyboard of X1 Carbon */ - if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { - if ((hkeyv >> 8) == 2) { - if (!acpi_evalf(hkey_handle, - NULL, - "STRW", "vd", - adaptive_keyboard_prev_mode)) { - pr_err("Cannot set adaptive keyboard mode.\n"); - } + if (tp_features.has_adaptive_kbd) { + if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", + adaptive_keyboard_prev_mode)) { + pr_err("Cannot set adaptive keyboard mode.\n"); } } } -- 2.20.1