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platform/x86: thinkpad_acpi: set keyboard language
This patch is to create sysfs entry for setting keyboard language
using ASL method. Some thinkpads models like T580 , T590 , T15 Gen 1
etc. has "=", "(',")" numeric keys, which are not displaying correctly,
when keyboard language is other than "english".
This patch fixes this issue by setting keyboard language to ECFW.
Signed-off-by: Nitin Joshi <njoshi1@lenovo.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210125025916.180831-1-nitjoshi@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Nitin Joshi
Hans de Goede
parent
aecb925db7
commit
d7cbe2773a
@ -51,6 +51,7 @@ detailed description):
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- UWB enable and disable
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- LCD Shadow (PrivacyGuard) enable and disable
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- Lap mode sensor
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- Setting keyboard language
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A compatibility table by model and feature is maintained on the web
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site, http://ibm-acpi.sf.net/. I appreciate any success or failure
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@ -1466,6 +1467,29 @@ Sysfs notes
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rfkill controller switch "tpacpi_uwb_sw": refer to
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Documentation/driver-api/rfkill.rst for details.
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Setting keyboard language
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-------------------
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sysfs: keyboard_lang
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This feature is used to set keyboard language to ECFW using ASL interface.
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Fewer thinkpads models like T580 , T590 , T15 Gen 1 etc.. has "=", "(',
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")" numeric keys, which are not displaying correctly, when keyboard language
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is other than "english". This is because of default keyboard language in ECFW
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is set as "english". Hence using this sysfs, user can set correct keyboard
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language to ECFW and then these key's will work correctly .
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Example of command to set keyboard language is mentioned below::
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echo jp > /sys/devices/platform/thinkpad_acpi/keyboard_lang
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Text corresponding to keyboard layout to be set in sysfs are : jp (Japan), be(Belgian),
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cz(Czech), en(English), da(Danish), de(German), es(Spain) , et(Estonian),
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fr(French) , fr-ch (French(Switzerland)), pl(Polish), sl(Slovenian), hu
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(Hungarian), nl(Dutch), tr(Turkey), it(Italy), sv(Sweden), pt(portugese)
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Adaptive keyboard
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-----------------
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@ -9983,6 +9983,183 @@ static struct ibm_struct proxsensor_driver_data = {
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.exit = proxsensor_exit,
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};
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/*************************************************************************
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* Keyboard language interface
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*/
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struct keyboard_lang_data {
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const char *lang_str;
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int lang_code;
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};
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/*
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* When adding new entries to keyboard_lang_data, please check that
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* the select_lang[] buffer in keyboard_lang_show() is still large enough.
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*/
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struct keyboard_lang_data keyboard_lang_data[] = {
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{"en", 0},
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{"be", 0x080c},
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{"cz", 0x0405},
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{"da", 0x0406},
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{"de", 0x0c07},
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{"es", 0x2c0a},
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{"et", 0x0425},
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{"fr", 0x040c},
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{"fr-ch", 0x100c},
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{"hu", 0x040e},
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{"it", 0x0410},
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{"jp", 0x0411},
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{"nl", 0x0413},
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{"nn", 0x0414},
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{"pl", 0x0415},
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{"pt", 0x0816},
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{"sl", 0x041b},
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{"sv", 0x081d},
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{"tr", 0x041f},
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};
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static int set_keyboard_lang_command(int command)
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{
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acpi_handle sskl_handle;
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int output;
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if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) {
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/* Platform doesn't support SSKL */
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return -ENODEV;
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}
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if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command))
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return -EIO;
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return 0;
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}
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static int get_keyboard_lang(int *output)
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{
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acpi_handle gskl_handle;
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int kbd_lang;
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if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) {
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/* Platform doesn't support GSKL */
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return -ENODEV;
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}
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if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000))
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return -EIO;
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*output = kbd_lang;
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return 0;
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}
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/* sysfs keyboard language entry */
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static ssize_t keyboard_lang_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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int output, err, i;
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char select_lang[80] = "";
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char lang[8] = "";
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err = get_keyboard_lang(&output);
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if (err)
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return err;
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for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
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if (i)
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strcat(select_lang, " ");
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if (output == keyboard_lang_data[i].lang_code) {
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strcat(lang, "[");
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strcat(lang, keyboard_lang_data[i].lang_str);
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strcat(lang, "]");
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strcat(select_lang, lang);
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} else {
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strcat(select_lang, keyboard_lang_data[i].lang_str);
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}
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}
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return sysfs_emit(buf, "%s\n", select_lang);
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}
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static ssize_t keyboard_lang_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int err, i;
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bool lang_found = false;
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int lang_code = 0;
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for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) {
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if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) {
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lang_code = keyboard_lang_data[i].lang_code;
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lang_found = true;
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break;
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}
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}
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if (lang_found) {
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lang_code = lang_code | 1 << 24;
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/* Set language code */
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err = set_keyboard_lang_command(lang_code);
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if (err)
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return err;
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} else {
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pr_err("Unknown Keyboard language. Ignoring\n");
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return -EINVAL;
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}
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tpacpi_disclose_usertask(attr->attr.name,
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"keyboard language is set to %s\n", buf);
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sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang");
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return count;
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}
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static DEVICE_ATTR_RW(keyboard_lang);
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static struct attribute *kbdlang_attributes[] = {
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&dev_attr_keyboard_lang.attr,
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NULL
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};
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static const struct attribute_group kbdlang_attr_group = {
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.attrs = kbdlang_attributes,
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};
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static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm)
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{
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int err, output;
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err = get_keyboard_lang(&output);
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/*
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* If support isn't available (ENODEV) then don't return an error
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* just don't create the sysfs group
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*/
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if (err == -ENODEV)
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return 0;
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if (err)
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return err;
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/* Platform supports this feature - create the sysfs file */
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err = sysfs_create_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group);
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return err;
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}
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static void kbdlang_exit(void)
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{
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sysfs_remove_group(&tpacpi_pdev->dev.kobj, &kbdlang_attr_group);
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}
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static struct ibm_struct kbdlang_driver_data = {
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.name = "kbdlang",
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.exit = kbdlang_exit,
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};
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/****************************************************************************
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****************************************************************************
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*
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@ -10475,6 +10652,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
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.init = tpacpi_proxsensor_init,
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.data = &proxsensor_driver_data,
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},
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{
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.init = tpacpi_kbdlang_init,
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.data = &kbdlang_driver_data,
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},
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};
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static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
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