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thinkpad_acpi: Add support for HKEY version 0x200

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Lenovo Thinkpad devices T460, T460s, T460p, T560, X260 use
HKEY version 0x200 without adaptive keyboard.

HKEY version 0x200 has method MHKA with one parameter value.
Passing parameter value 1 will get hotkey_all_mask (the same like
HKEY version 0x100 without parameter). Passing parameter value 2 to
MHKA method will retrieve hotkey_all_adaptive_mask. If 0 is returned in
that case there is no adaptive keyboard available.

Signed-off-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Signed-off-by: Lyude <cpaul@redhat.com>
Tested-by: Lyude <cpaul@redhat.com>
Tested-by: Marco Trevisan <marco@ubuntu.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
[dvhart: Keep MHKA error string on one line in new and existing pr_err calls]
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Dennis Wassenberg 2016-06-08 10:54:25 -04:00 committed by Darren Hart
parent 48f67d6219
commit 0118c2d3ea
1 changed files with 63 additions and 24 deletions
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87
drivers/platform/x86/thinkpad_acpi.c
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@ -2043,6 +2043,7 @@ static int hotkey_autosleep_ack;
static u32 hotkey_orig_mask; /* events the BIOS had enabled */
static u32 hotkey_all_mask; /* all events supported in fw */
static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */
static u32 hotkey_reserved_mask; /* events better left disabled */
static u32 hotkey_driver_mask; /* events needed by the driver */
static u32 hotkey_user_mask; /* events visible to userspace */
@ -2742,6 +2743,17 @@ static ssize_t hotkey_all_mask_show(struct device *dev,
static DEVICE_ATTR_RO(hotkey_all_mask);
/* sysfs hotkey all_mask ----------------------------------------------- */
static ssize_t hotkey_adaptive_all_mask_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "0x%08x\n",
hotkey_adaptive_all_mask | hotkey_source_mask);
}
static DEVICE_ATTR_RO(hotkey_adaptive_all_mask);
/* sysfs hotkey recommended_mask --------------------------------------- */
static ssize_t hotkey_recommended_mask_show(struct device *dev,
struct device_attribute *attr,
@ -2985,6 +2997,7 @@ static struct attribute *hotkey_attributes[] __initdata = {
&dev_attr_wakeup_hotunplug_complete.attr,
&dev_attr_hotkey_mask.attr,
&dev_attr_hotkey_all_mask.attr,
&dev_attr_hotkey_adaptive_all_mask.attr,
&dev_attr_hotkey_recommended_mask.attr,
#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL
&dev_attr_hotkey_source_mask.attr,
@ -3321,20 +3334,6 @@ 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;
res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
&adaptive_kbd_attr_group);
if (res)
goto err_exit;
}
}
quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable,
ARRAY_SIZE(tpacpi_hotkey_qtable));
@ -3357,30 +3356,70 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking
for HKEY interface version 0x100 */
if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) {
if ((hkeyv >> 8) != 1) {
pr_err("unknown version of the HKEY interface: 0x%x\n",
hkeyv);
pr_err("please report this to %s\n", TPACPI_MAIL);
} else {
vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
"firmware HKEY interface version: 0x%x\n",
hkeyv);
switch (hkeyv >> 8) {
case 1:
/*
* MHKV 0x100 in A31, R40, R40e,
* T4x, X31, and later
*/
vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
"firmware HKEY interface version: 0x%x\n",
hkeyv);
/* Paranoia check AND init hotkey_all_mask */
if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
"MHKA", "qd")) {
pr_err("missing MHKA handler, "
"please report this to %s\n",
pr_err("missing MHKA handler, please report this to %s\n",
TPACPI_MAIL);
/* Fallback: pre-init for FN+F3,F4,F12 */
hotkey_all_mask = 0x080cU;
} else {
tp_features.hotkey_mask = 1;
}
break;
case 2:
/*
* MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016)
*/
/* Paranoia check AND init hotkey_all_mask */
if (!acpi_evalf(hkey_handle, &hotkey_all_mask,
"MHKA", "dd", 1)) {
pr_err("missing MHKA handler, please report this to %s\n",
TPACPI_MAIL);
/* Fallback: pre-init for FN+F3,F4,F12 */
hotkey_all_mask = 0x080cU;
} else {
tp_features.hotkey_mask = 1;
}
/*
* Check if we have an adaptive keyboard, like on the
* Lenovo Carbon X1 2014 (2nd Gen).
*/
if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask,
"MHKA", "dd", 2)) {
if (hotkey_adaptive_all_mask != 0) {
tp_features.has_adaptive_kbd = true;
res = sysfs_create_group(
&tpacpi_pdev->dev.kobj,
&adaptive_kbd_attr_group);
if (res)
goto err_exit;
}
} else {
tp_features.has_adaptive_kbd = false;
hotkey_adaptive_all_mask = 0x0U;
}
break;
default:
pr_err("unknown version of the HKEY interface: 0x%x\n",
hkeyv);
pr_err("please report this to %s\n", TPACPI_MAIL);
break;
}
}