mirror of https://gitee.com/openkylin/linux.git
Merge branch 'dell-wmi' into release
This commit is contained in:
Len Brown
commit
689a8ab32f
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@ -31,6 +31,7 @@
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#include <acpi/acpi_drivers.h>
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#include <linux/acpi.h>
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#include <linux/string.h>
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#include <linux/dmi.h>
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MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
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MODULE_DESCRIPTION("Dell laptop WMI hotkeys driver");
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@ -38,6 +39,8 @@ MODULE_LICENSE("GPL");
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#define DELL_EVENT_GUID "9DBB5994-A997-11DA-B012-B622A1EF5492"
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static int acpi_video;
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MODULE_ALIAS("wmi:"DELL_EVENT_GUID);
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struct key_entry {
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@ -54,7 +57,7 @@ enum { KE_KEY, KE_SW, KE_IGNORE, KE_END };
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* via the keyboard controller so should not be sent again.
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*/
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static struct key_entry dell_wmi_keymap[] = {
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static struct key_entry dell_legacy_wmi_keymap[] = {
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{KE_KEY, 0xe045, KEY_PROG1},
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{KE_KEY, 0xe009, KEY_EJECTCD},
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@ -72,7 +75,7 @@ static struct key_entry dell_wmi_keymap[] = {
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/* The next device is at offset 6, the active devices are at
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offset 8 and the attached devices at offset 10 */
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{KE_KEY, 0xe00b, KEY_DISPLAYTOGGLE},
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{KE_KEY, 0xe00b, KEY_SWITCHVIDEOMODE},
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{KE_IGNORE, 0xe00c, KEY_KBDILLUMTOGGLE},
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@ -96,6 +99,47 @@ static struct key_entry dell_wmi_keymap[] = {
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{KE_END, 0}
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};
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static bool dell_new_hk_type;
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struct dell_new_keymap_entry {
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u16 scancode;
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u16 keycode;
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};
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struct dell_hotkey_table {
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struct dmi_header header;
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struct dell_new_keymap_entry keymap[];
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};
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static struct key_entry *dell_new_wmi_keymap;
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static u16 bios_to_linux_keycode[256] = {
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KEY_MEDIA, KEY_NEXTSONG, KEY_PLAYPAUSE, KEY_PREVIOUSSONG,
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KEY_STOPCD, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN,
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KEY_WWW, KEY_UNKNOWN, KEY_VOLUMEDOWN, KEY_MUTE,
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KEY_VOLUMEUP, KEY_UNKNOWN, KEY_BATTERY, KEY_EJECTCD,
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KEY_UNKNOWN, KEY_SLEEP, KEY_PROG1, KEY_BRIGHTNESSDOWN,
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KEY_BRIGHTNESSUP, KEY_UNKNOWN, KEY_KBDILLUMTOGGLE,
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KEY_UNKNOWN, KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN,
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KEY_SWITCHVIDEOMODE, KEY_UNKNOWN, KEY_UNKNOWN, KEY_PROG2,
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KEY_UNKNOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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KEY_PROG3
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};
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static struct key_entry *dell_wmi_keymap = dell_legacy_wmi_keymap;
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static struct input_dev *dell_wmi_input_dev;
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static struct key_entry *dell_wmi_get_entry_by_scancode(int code)
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@ -164,24 +208,78 @@ static void dell_wmi_notify(u32 value, void *context)
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obj = (union acpi_object *)response.pointer;
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if (obj && obj->type == ACPI_TYPE_BUFFER) {
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int *buffer = (int *)obj->buffer.pointer;
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/*
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* The upper bytes of the event may contain
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* additional information, so mask them off for the
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* scancode lookup
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*/
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key = dell_wmi_get_entry_by_scancode(buffer[1] & 0xFFFF);
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if (key) {
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int reported_key;
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u16 *buffer_entry = (u16 *)obj->buffer.pointer;
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if (dell_new_hk_type && (buffer_entry[1] != 0x10)) {
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printk(KERN_INFO "dell-wmi: Received unknown WMI event"
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" (0x%x)\n", buffer_entry[1]);
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return;
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}
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if (dell_new_hk_type)
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reported_key = (int)buffer_entry[2];
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else
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reported_key = (int)buffer_entry[1] & 0xffff;
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key = dell_wmi_get_entry_by_scancode(reported_key);
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if (!key) {
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printk(KERN_INFO "dell-wmi: Unknown key %x pressed\n",
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reported_key);
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} else if ((key->keycode == KEY_BRIGHTNESSUP ||
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key->keycode == KEY_BRIGHTNESSDOWN) && acpi_video) {
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/* Don't report brightness notifications that will also
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* come via ACPI */
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return;
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} else {
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input_report_key(dell_wmi_input_dev, key->keycode, 1);
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input_sync(dell_wmi_input_dev);
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input_report_key(dell_wmi_input_dev, key->keycode, 0);
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input_sync(dell_wmi_input_dev);
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} else if (buffer[1] & 0xFFFF)
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printk(KERN_INFO "dell-wmi: Unknown key %x pressed\n",
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buffer[1] & 0xFFFF);
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}
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}
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}
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static void setup_new_hk_map(const struct dmi_header *dm)
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{
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int i;
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int hotkey_num = (dm->length-4)/sizeof(struct dell_new_keymap_entry);
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struct dell_hotkey_table *table =
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container_of(dm, struct dell_hotkey_table, header);
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dell_new_wmi_keymap = kzalloc((hotkey_num+1) *
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sizeof(struct key_entry), GFP_KERNEL);
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for (i = 0; i < hotkey_num; i++) {
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dell_new_wmi_keymap[i].type = KE_KEY;
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dell_new_wmi_keymap[i].code = table->keymap[i].scancode;
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dell_new_wmi_keymap[i].keycode =
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(table->keymap[i].keycode > 255) ? 0 :
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bios_to_linux_keycode[table->keymap[i].keycode];
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}
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dell_new_wmi_keymap[i].type = KE_END;
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dell_new_wmi_keymap[i].code = 0;
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dell_new_wmi_keymap[i].keycode = 0;
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dell_wmi_keymap = dell_new_wmi_keymap;
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}
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static void find_hk_type(const struct dmi_header *dm, void *dummy)
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{
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if ((dm->type == 0xb2) && (dm->length > 6)) {
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dell_new_hk_type = true;
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setup_new_hk_map(dm);
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}
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}
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static int __init dell_wmi_input_setup(void)
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{
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struct key_entry *key;
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@ -226,6 +324,9 @@ static int __init dell_wmi_init(void)
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int err;
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if (wmi_has_guid(DELL_EVENT_GUID)) {
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dmi_walk(find_hk_type, NULL);
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err = dell_wmi_input_setup();
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if (err)
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@ -240,6 +341,8 @@ static int __init dell_wmi_init(void)
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return err;
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}
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acpi_video = acpi_video_backlight_support();
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} else
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printk(KERN_WARNING "dell-wmi: No known WMI GUID found\n");
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