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e8edf53b19
The dell_smi_error() method could be used by modules other than dell-laptop for convenient translation of SMBIOS request errors into errno values. Thus, move it to dell-smbios. Signed-off-by: Michał Kępień <kernel@kempniu.pl> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2094 lines
53 KiB
C
2094 lines
53 KiB
C
/*
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* Driver for Dell laptop extras
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*
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* Copyright (c) Red Hat <mjg@redhat.com>
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* Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
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* Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
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*
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* Based on documentation in the libsmbios package:
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* Copyright (C) 2005-2014 Dell Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/backlight.h>
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#include <linux/err.h>
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#include <linux/dmi.h>
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#include <linux/io.h>
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#include <linux/rfkill.h>
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#include <linux/power_supply.h>
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#include <linux/acpi.h>
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#include <linux/mm.h>
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#include <linux/i8042.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <acpi/video.h>
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#include "dell-rbtn.h"
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#include "dell-smbios.h"
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#define BRIGHTNESS_TOKEN 0x7d
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#define KBD_LED_OFF_TOKEN 0x01E1
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#define KBD_LED_ON_TOKEN 0x01E2
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#define KBD_LED_AUTO_TOKEN 0x01E3
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#define KBD_LED_AUTO_25_TOKEN 0x02EA
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#define KBD_LED_AUTO_50_TOKEN 0x02EB
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#define KBD_LED_AUTO_75_TOKEN 0x02EC
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#define KBD_LED_AUTO_100_TOKEN 0x02F6
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struct quirk_entry {
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u8 touchpad_led;
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int needs_kbd_timeouts;
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/*
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* Ordered list of timeouts expressed in seconds.
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* The list must end with -1
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*/
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int kbd_timeouts[];
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};
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static struct quirk_entry *quirks;
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static struct quirk_entry quirk_dell_vostro_v130 = {
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.touchpad_led = 1,
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};
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static int __init dmi_matched(const struct dmi_system_id *dmi)
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{
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quirks = dmi->driver_data;
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return 1;
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}
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/*
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* These values come from Windows utility provided by Dell. If any other value
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* is used then BIOS silently set timeout to 0 without any error message.
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*/
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static struct quirk_entry quirk_dell_xps13_9333 = {
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.needs_kbd_timeouts = 1,
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.kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 },
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};
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static struct platform_driver platform_driver = {
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.driver = {
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.name = "dell-laptop",
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}
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};
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static struct platform_device *platform_device;
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static struct backlight_device *dell_backlight_device;
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static struct rfkill *wifi_rfkill;
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static struct rfkill *bluetooth_rfkill;
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static struct rfkill *wwan_rfkill;
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static bool force_rfkill;
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module_param(force_rfkill, bool, 0444);
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MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models");
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static const struct dmi_system_id dell_device_table[] __initconst = {
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{
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.ident = "Dell laptop",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
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},
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},
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{
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /*Laptop*/
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},
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},
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{
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.ident = "Dell Computer Corporation",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
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DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
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},
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},
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{ }
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};
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MODULE_DEVICE_TABLE(dmi, dell_device_table);
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static const struct dmi_system_id dell_quirks[] __initconst = {
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro V130",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro V131",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3350",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3555",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron N311z",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron M5110",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3360",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3460",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3560",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Vostro 3450",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 5420",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 5520",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 5720",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 7420",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 7520",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell Inspiron 7720",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"),
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},
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.driver_data = &quirk_dell_vostro_v130,
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},
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{
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.callback = dmi_matched,
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.ident = "Dell XPS13 9333",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"),
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},
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.driver_data = &quirk_dell_xps13_9333,
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},
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{ }
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};
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/*
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* Derived from information in smbios-wireless-ctl:
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*
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* cbSelect 17, Value 11
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*
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* Return Wireless Info
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* cbArg1, byte0 = 0x00
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*
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* cbRes1 Standard return codes (0, -1, -2)
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* cbRes2 Info bit flags:
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*
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* 0 Hardware switch supported (1)
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* 1 WiFi locator supported (1)
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* 2 WLAN supported (1)
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* 3 Bluetooth (BT) supported (1)
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* 4 WWAN supported (1)
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* 5 Wireless KBD supported (1)
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* 6 Uw b supported (1)
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* 7 WiGig supported (1)
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* 8 WLAN installed (1)
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* 9 BT installed (1)
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* 10 WWAN installed (1)
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* 11 Uw b installed (1)
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* 12 WiGig installed (1)
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* 13-15 Reserved (0)
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* 16 Hardware (HW) switch is On (1)
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* 17 WLAN disabled (1)
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* 18 BT disabled (1)
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* 19 WWAN disabled (1)
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* 20 Uw b disabled (1)
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* 21 WiGig disabled (1)
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* 20-31 Reserved (0)
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*
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* cbRes3 NVRAM size in bytes
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* cbRes4, byte 0 NVRAM format version number
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*
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*
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* Set QuickSet Radio Disable Flag
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* cbArg1, byte0 = 0x01
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* cbArg1, byte1
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* Radio ID value:
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* 0 Radio Status
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* 1 WLAN ID
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* 2 BT ID
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* 3 WWAN ID
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* 4 UWB ID
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* 5 WIGIG ID
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* cbArg1, byte2 Flag bits:
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* 0 QuickSet disables radio (1)
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* 1-7 Reserved (0)
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*
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* cbRes1 Standard return codes (0, -1, -2)
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* cbRes2 QuickSet (QS) radio disable bit map:
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* 0 QS disables WLAN
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* 1 QS disables BT
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* 2 QS disables WWAN
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* 3 QS disables UWB
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* 4 QS disables WIGIG
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* 5-31 Reserved (0)
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*
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* Wireless Switch Configuration
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* cbArg1, byte0 = 0x02
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*
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* cbArg1, byte1
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* Subcommand:
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* 0 Get config
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* 1 Set config
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* 2 Set WiFi locator enable/disable
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* cbArg1,byte2
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* Switch settings (if byte 1==1):
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* 0 WLAN sw itch control (1)
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* 1 BT sw itch control (1)
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* 2 WWAN sw itch control (1)
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* 3 UWB sw itch control (1)
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* 4 WiGig sw itch control (1)
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* 5-7 Reserved (0)
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* cbArg1, byte2 Enable bits (if byte 1==2):
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* 0 Enable WiFi locator (1)
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*
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* cbRes1 Standard return codes (0, -1, -2)
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* cbRes2 QuickSet radio disable bit map:
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* 0 WLAN controlled by sw itch (1)
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* 1 BT controlled by sw itch (1)
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* 2 WWAN controlled by sw itch (1)
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* 3 UWB controlled by sw itch (1)
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* 4 WiGig controlled by sw itch (1)
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* 5-6 Reserved (0)
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* 7 Wireless sw itch config locked (1)
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* 8 WiFi locator enabled (1)
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* 9-14 Reserved (0)
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* 15 WiFi locator setting locked (1)
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* 16-31 Reserved (0)
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*
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* Read Local Config Data (LCD)
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* cbArg1, byte0 = 0x10
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* cbArg1, byte1 NVRAM index low byte
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* cbArg1, byte2 NVRAM index high byte
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* cbRes1 Standard return codes (0, -1, -2)
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* cbRes2 4 bytes read from LCD[index]
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* cbRes3 4 bytes read from LCD[index+4]
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* cbRes4 4 bytes read from LCD[index+8]
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*
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* Write Local Config Data (LCD)
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* cbArg1, byte0 = 0x11
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* cbArg1, byte1 NVRAM index low byte
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* cbArg1, byte2 NVRAM index high byte
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* cbArg2 4 bytes to w rite at LCD[index]
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* cbArg3 4 bytes to w rite at LCD[index+4]
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* cbArg4 4 bytes to w rite at LCD[index+8]
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* cbRes1 Standard return codes (0, -1, -2)
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*
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* Populate Local Config Data from NVRAM
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* cbArg1, byte0 = 0x12
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* cbRes1 Standard return codes (0, -1, -2)
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*
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* Commit Local Config Data to NVRAM
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* cbArg1, byte0 = 0x13
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* cbRes1 Standard return codes (0, -1, -2)
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*/
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static int dell_rfkill_set(void *data, bool blocked)
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{
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struct calling_interface_buffer *buffer;
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int disable = blocked ? 1 : 0;
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unsigned long radio = (unsigned long)data;
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int hwswitch_bit = (unsigned long)data - 1;
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int hwswitch;
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int status;
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int ret;
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buffer = dell_smbios_get_buffer();
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dell_smbios_send_request(17, 11);
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ret = buffer->output[0];
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status = buffer->output[1];
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if (ret != 0)
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goto out;
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dell_smbios_clear_buffer();
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buffer->input[0] = 0x2;
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dell_smbios_send_request(17, 11);
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ret = buffer->output[0];
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hwswitch = buffer->output[1];
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/* If the hardware switch controls this radio, and the hardware
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switch is disabled, always disable the radio */
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if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) &&
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(status & BIT(0)) && !(status & BIT(16)))
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disable = 1;
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dell_smbios_clear_buffer();
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buffer->input[0] = (1 | (radio<<8) | (disable << 16));
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dell_smbios_send_request(17, 11);
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ret = buffer->output[0];
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out:
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dell_smbios_release_buffer();
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return dell_smi_error(ret);
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}
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/* Must be called with the buffer held */
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static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
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int status,
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struct calling_interface_buffer *buffer)
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{
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if (status & BIT(0)) {
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/* Has hw-switch, sync sw_state to BIOS */
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int block = rfkill_blocked(rfkill);
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dell_smbios_clear_buffer();
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buffer->input[0] = (1 | (radio << 8) | (block << 16));
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dell_smbios_send_request(17, 11);
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} else {
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/* No hw-switch, sync BIOS state to sw_state */
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rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16)));
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}
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}
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static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio,
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int status, int hwswitch)
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{
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if (hwswitch & (BIT(radio - 1)))
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rfkill_set_hw_state(rfkill, !(status & BIT(16)));
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}
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static void dell_rfkill_query(struct rfkill *rfkill, void *data)
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{
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struct calling_interface_buffer *buffer;
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int radio = ((unsigned long)data & 0xF);
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int hwswitch;
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int status;
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int ret;
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buffer = dell_smbios_get_buffer();
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dell_smbios_send_request(17, 11);
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ret = buffer->output[0];
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status = buffer->output[1];
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if (ret != 0 || !(status & BIT(0))) {
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dell_smbios_release_buffer();
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return;
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}
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dell_smbios_clear_buffer();
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|
|
buffer->input[0] = 0x2;
|
|
dell_smbios_send_request(17, 11);
|
|
ret = buffer->output[0];
|
|
hwswitch = buffer->output[1];
|
|
|
|
dell_smbios_release_buffer();
|
|
|
|
if (ret != 0)
|
|
return;
|
|
|
|
dell_rfkill_update_hw_state(rfkill, radio, status, hwswitch);
|
|
}
|
|
|
|
static const struct rfkill_ops dell_rfkill_ops = {
|
|
.set_block = dell_rfkill_set,
|
|
.query = dell_rfkill_query,
|
|
};
|
|
|
|
static struct dentry *dell_laptop_dir;
|
|
|
|
static int dell_debugfs_show(struct seq_file *s, void *data)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
int hwswitch_state;
|
|
int hwswitch_ret;
|
|
int status;
|
|
int ret;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
|
|
dell_smbios_send_request(17, 11);
|
|
ret = buffer->output[0];
|
|
status = buffer->output[1];
|
|
|
|
dell_smbios_clear_buffer();
|
|
|
|
buffer->input[0] = 0x2;
|
|
dell_smbios_send_request(17, 11);
|
|
hwswitch_ret = buffer->output[0];
|
|
hwswitch_state = buffer->output[1];
|
|
|
|
dell_smbios_release_buffer();
|
|
|
|
seq_printf(s, "return:\t%d\n", ret);
|
|
seq_printf(s, "status:\t0x%X\n", status);
|
|
seq_printf(s, "Bit 0 : Hardware switch supported: %lu\n",
|
|
status & BIT(0));
|
|
seq_printf(s, "Bit 1 : Wifi locator supported: %lu\n",
|
|
(status & BIT(1)) >> 1);
|
|
seq_printf(s, "Bit 2 : Wifi is supported: %lu\n",
|
|
(status & BIT(2)) >> 2);
|
|
seq_printf(s, "Bit 3 : Bluetooth is supported: %lu\n",
|
|
(status & BIT(3)) >> 3);
|
|
seq_printf(s, "Bit 4 : WWAN is supported: %lu\n",
|
|
(status & BIT(4)) >> 4);
|
|
seq_printf(s, "Bit 5 : Wireless keyboard supported: %lu\n",
|
|
(status & BIT(5)) >> 5);
|
|
seq_printf(s, "Bit 6 : UWB supported: %lu\n",
|
|
(status & BIT(6)) >> 6);
|
|
seq_printf(s, "Bit 7 : WiGig supported: %lu\n",
|
|
(status & BIT(7)) >> 7);
|
|
seq_printf(s, "Bit 8 : Wifi is installed: %lu\n",
|
|
(status & BIT(8)) >> 8);
|
|
seq_printf(s, "Bit 9 : Bluetooth is installed: %lu\n",
|
|
(status & BIT(9)) >> 9);
|
|
seq_printf(s, "Bit 10: WWAN is installed: %lu\n",
|
|
(status & BIT(10)) >> 10);
|
|
seq_printf(s, "Bit 11: UWB installed: %lu\n",
|
|
(status & BIT(11)) >> 11);
|
|
seq_printf(s, "Bit 12: WiGig installed: %lu\n",
|
|
(status & BIT(12)) >> 12);
|
|
|
|
seq_printf(s, "Bit 16: Hardware switch is on: %lu\n",
|
|
(status & BIT(16)) >> 16);
|
|
seq_printf(s, "Bit 17: Wifi is blocked: %lu\n",
|
|
(status & BIT(17)) >> 17);
|
|
seq_printf(s, "Bit 18: Bluetooth is blocked: %lu\n",
|
|
(status & BIT(18)) >> 18);
|
|
seq_printf(s, "Bit 19: WWAN is blocked: %lu\n",
|
|
(status & BIT(19)) >> 19);
|
|
seq_printf(s, "Bit 20: UWB is blocked: %lu\n",
|
|
(status & BIT(20)) >> 20);
|
|
seq_printf(s, "Bit 21: WiGig is blocked: %lu\n",
|
|
(status & BIT(21)) >> 21);
|
|
|
|
seq_printf(s, "\nhwswitch_return:\t%d\n", hwswitch_ret);
|
|
seq_printf(s, "hwswitch_state:\t0x%X\n", hwswitch_state);
|
|
seq_printf(s, "Bit 0 : Wifi controlled by switch: %lu\n",
|
|
hwswitch_state & BIT(0));
|
|
seq_printf(s, "Bit 1 : Bluetooth controlled by switch: %lu\n",
|
|
(hwswitch_state & BIT(1)) >> 1);
|
|
seq_printf(s, "Bit 2 : WWAN controlled by switch: %lu\n",
|
|
(hwswitch_state & BIT(2)) >> 2);
|
|
seq_printf(s, "Bit 3 : UWB controlled by switch: %lu\n",
|
|
(hwswitch_state & BIT(3)) >> 3);
|
|
seq_printf(s, "Bit 4 : WiGig controlled by switch: %lu\n",
|
|
(hwswitch_state & BIT(4)) >> 4);
|
|
seq_printf(s, "Bit 7 : Wireless switch config locked: %lu\n",
|
|
(hwswitch_state & BIT(7)) >> 7);
|
|
seq_printf(s, "Bit 8 : Wifi locator enabled: %lu\n",
|
|
(hwswitch_state & BIT(8)) >> 8);
|
|
seq_printf(s, "Bit 15: Wifi locator setting locked: %lu\n",
|
|
(hwswitch_state & BIT(15)) >> 15);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dell_debugfs_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, dell_debugfs_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations dell_debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = dell_debugfs_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static void dell_update_rfkill(struct work_struct *ignored)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
int hwswitch = 0;
|
|
int status;
|
|
int ret;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
|
|
dell_smbios_send_request(17, 11);
|
|
ret = buffer->output[0];
|
|
status = buffer->output[1];
|
|
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
dell_smbios_clear_buffer();
|
|
|
|
buffer->input[0] = 0x2;
|
|
dell_smbios_send_request(17, 11);
|
|
ret = buffer->output[0];
|
|
|
|
if (ret == 0 && (status & BIT(0)))
|
|
hwswitch = buffer->output[1];
|
|
|
|
if (wifi_rfkill) {
|
|
dell_rfkill_update_hw_state(wifi_rfkill, 1, status, hwswitch);
|
|
dell_rfkill_update_sw_state(wifi_rfkill, 1, status, buffer);
|
|
}
|
|
if (bluetooth_rfkill) {
|
|
dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status,
|
|
hwswitch);
|
|
dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status,
|
|
buffer);
|
|
}
|
|
if (wwan_rfkill) {
|
|
dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch);
|
|
dell_rfkill_update_sw_state(wwan_rfkill, 3, status, buffer);
|
|
}
|
|
|
|
out:
|
|
dell_smbios_release_buffer();
|
|
}
|
|
static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill);
|
|
|
|
static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
|
|
struct serio *port)
|
|
{
|
|
static bool extended;
|
|
|
|
if (str & I8042_STR_AUXDATA)
|
|
return false;
|
|
|
|
if (unlikely(data == 0xe0)) {
|
|
extended = true;
|
|
return false;
|
|
} else if (unlikely(extended)) {
|
|
switch (data) {
|
|
case 0x8:
|
|
schedule_delayed_work(&dell_rfkill_work,
|
|
round_jiffies_relative(HZ / 4));
|
|
break;
|
|
}
|
|
extended = false;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int (*dell_rbtn_notifier_register_func)(struct notifier_block *);
|
|
static int (*dell_rbtn_notifier_unregister_func)(struct notifier_block *);
|
|
|
|
static int dell_laptop_rbtn_notifier_call(struct notifier_block *nb,
|
|
unsigned long action, void *data)
|
|
{
|
|
schedule_delayed_work(&dell_rfkill_work, 0);
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static struct notifier_block dell_laptop_rbtn_notifier = {
|
|
.notifier_call = dell_laptop_rbtn_notifier_call,
|
|
};
|
|
|
|
static int __init dell_setup_rfkill(void)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
int status, ret, whitelisted;
|
|
const char *product;
|
|
|
|
/*
|
|
* rfkill support causes trouble on various models, mostly Inspirons.
|
|
* So we whitelist certain series, and don't support rfkill on others.
|
|
*/
|
|
whitelisted = 0;
|
|
product = dmi_get_system_info(DMI_PRODUCT_NAME);
|
|
if (product && (strncmp(product, "Latitude", 8) == 0 ||
|
|
strncmp(product, "Precision", 9) == 0))
|
|
whitelisted = 1;
|
|
if (!force_rfkill && !whitelisted)
|
|
return 0;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
dell_smbios_send_request(17, 11);
|
|
ret = buffer->output[0];
|
|
status = buffer->output[1];
|
|
dell_smbios_release_buffer();
|
|
|
|
/* dell wireless info smbios call is not supported */
|
|
if (ret != 0)
|
|
return 0;
|
|
|
|
/* rfkill is only tested on laptops with a hwswitch */
|
|
if (!(status & BIT(0)) && !force_rfkill)
|
|
return 0;
|
|
|
|
if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
|
|
wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev,
|
|
RFKILL_TYPE_WLAN,
|
|
&dell_rfkill_ops, (void *) 1);
|
|
if (!wifi_rfkill) {
|
|
ret = -ENOMEM;
|
|
goto err_wifi;
|
|
}
|
|
ret = rfkill_register(wifi_rfkill);
|
|
if (ret)
|
|
goto err_wifi;
|
|
}
|
|
|
|
if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
|
|
bluetooth_rfkill = rfkill_alloc("dell-bluetooth",
|
|
&platform_device->dev,
|
|
RFKILL_TYPE_BLUETOOTH,
|
|
&dell_rfkill_ops, (void *) 2);
|
|
if (!bluetooth_rfkill) {
|
|
ret = -ENOMEM;
|
|
goto err_bluetooth;
|
|
}
|
|
ret = rfkill_register(bluetooth_rfkill);
|
|
if (ret)
|
|
goto err_bluetooth;
|
|
}
|
|
|
|
if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
|
|
wwan_rfkill = rfkill_alloc("dell-wwan",
|
|
&platform_device->dev,
|
|
RFKILL_TYPE_WWAN,
|
|
&dell_rfkill_ops, (void *) 3);
|
|
if (!wwan_rfkill) {
|
|
ret = -ENOMEM;
|
|
goto err_wwan;
|
|
}
|
|
ret = rfkill_register(wwan_rfkill);
|
|
if (ret)
|
|
goto err_wwan;
|
|
}
|
|
|
|
/*
|
|
* Dell Airplane Mode Switch driver (dell-rbtn) supports ACPI devices
|
|
* which can receive events from HW slider switch.
|
|
*
|
|
* Dell SMBIOS on whitelisted models supports controlling radio devices
|
|
* but does not support receiving HW button switch events. We can use
|
|
* i8042 filter hook function to receive keyboard data and handle
|
|
* keycode for HW button.
|
|
*
|
|
* So if it is possible we will use Dell Airplane Mode Switch ACPI
|
|
* driver for receiving HW events and Dell SMBIOS for setting rfkill
|
|
* states. If ACPI driver or device is not available we will fallback to
|
|
* i8042 filter hook function.
|
|
*
|
|
* To prevent duplicate rfkill devices which control and do same thing,
|
|
* dell-rbtn driver will automatically remove its own rfkill devices
|
|
* once function dell_rbtn_notifier_register() is called.
|
|
*/
|
|
|
|
dell_rbtn_notifier_register_func =
|
|
symbol_request(dell_rbtn_notifier_register);
|
|
if (dell_rbtn_notifier_register_func) {
|
|
dell_rbtn_notifier_unregister_func =
|
|
symbol_request(dell_rbtn_notifier_unregister);
|
|
if (!dell_rbtn_notifier_unregister_func) {
|
|
symbol_put(dell_rbtn_notifier_register);
|
|
dell_rbtn_notifier_register_func = NULL;
|
|
}
|
|
}
|
|
|
|
if (dell_rbtn_notifier_register_func) {
|
|
ret = dell_rbtn_notifier_register_func(
|
|
&dell_laptop_rbtn_notifier);
|
|
symbol_put(dell_rbtn_notifier_register);
|
|
dell_rbtn_notifier_register_func = NULL;
|
|
if (ret != 0) {
|
|
symbol_put(dell_rbtn_notifier_unregister);
|
|
dell_rbtn_notifier_unregister_func = NULL;
|
|
}
|
|
} else {
|
|
pr_info("Symbols from dell-rbtn acpi driver are not available\n");
|
|
ret = -ENODEV;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
pr_info("Using dell-rbtn acpi driver for receiving events\n");
|
|
} else if (ret != -ENODEV) {
|
|
pr_warn("Unable to register dell rbtn notifier\n");
|
|
goto err_filter;
|
|
} else {
|
|
ret = i8042_install_filter(dell_laptop_i8042_filter);
|
|
if (ret) {
|
|
pr_warn("Unable to install key filter\n");
|
|
goto err_filter;
|
|
}
|
|
pr_info("Using i8042 filter function for receiving events\n");
|
|
}
|
|
|
|
return 0;
|
|
err_filter:
|
|
if (wwan_rfkill)
|
|
rfkill_unregister(wwan_rfkill);
|
|
err_wwan:
|
|
rfkill_destroy(wwan_rfkill);
|
|
if (bluetooth_rfkill)
|
|
rfkill_unregister(bluetooth_rfkill);
|
|
err_bluetooth:
|
|
rfkill_destroy(bluetooth_rfkill);
|
|
if (wifi_rfkill)
|
|
rfkill_unregister(wifi_rfkill);
|
|
err_wifi:
|
|
rfkill_destroy(wifi_rfkill);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void dell_cleanup_rfkill(void)
|
|
{
|
|
if (dell_rbtn_notifier_unregister_func) {
|
|
dell_rbtn_notifier_unregister_func(&dell_laptop_rbtn_notifier);
|
|
symbol_put(dell_rbtn_notifier_unregister);
|
|
dell_rbtn_notifier_unregister_func = NULL;
|
|
} else {
|
|
i8042_remove_filter(dell_laptop_i8042_filter);
|
|
}
|
|
cancel_delayed_work_sync(&dell_rfkill_work);
|
|
if (wifi_rfkill) {
|
|
rfkill_unregister(wifi_rfkill);
|
|
rfkill_destroy(wifi_rfkill);
|
|
}
|
|
if (bluetooth_rfkill) {
|
|
rfkill_unregister(bluetooth_rfkill);
|
|
rfkill_destroy(bluetooth_rfkill);
|
|
}
|
|
if (wwan_rfkill) {
|
|
rfkill_unregister(wwan_rfkill);
|
|
rfkill_destroy(wwan_rfkill);
|
|
}
|
|
}
|
|
|
|
static int dell_send_intensity(struct backlight_device *bd)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
struct calling_interface_token *token;
|
|
int ret;
|
|
|
|
token = dell_smbios_find_token(BRIGHTNESS_TOKEN);
|
|
if (!token)
|
|
return -ENODEV;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = token->location;
|
|
buffer->input[1] = bd->props.brightness;
|
|
|
|
if (power_supply_is_system_supplied() > 0)
|
|
dell_smbios_send_request(1, 2);
|
|
else
|
|
dell_smbios_send_request(1, 1);
|
|
|
|
ret = dell_smi_error(buffer->output[0]);
|
|
|
|
dell_smbios_release_buffer();
|
|
return ret;
|
|
}
|
|
|
|
static int dell_get_intensity(struct backlight_device *bd)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
struct calling_interface_token *token;
|
|
int ret;
|
|
|
|
token = dell_smbios_find_token(BRIGHTNESS_TOKEN);
|
|
if (!token)
|
|
return -ENODEV;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = token->location;
|
|
|
|
if (power_supply_is_system_supplied() > 0)
|
|
dell_smbios_send_request(0, 2);
|
|
else
|
|
dell_smbios_send_request(0, 1);
|
|
|
|
if (buffer->output[0])
|
|
ret = dell_smi_error(buffer->output[0]);
|
|
else
|
|
ret = buffer->output[1];
|
|
|
|
dell_smbios_release_buffer();
|
|
return ret;
|
|
}
|
|
|
|
static const struct backlight_ops dell_ops = {
|
|
.get_brightness = dell_get_intensity,
|
|
.update_status = dell_send_intensity,
|
|
};
|
|
|
|
static void touchpad_led_on(void)
|
|
{
|
|
int command = 0x97;
|
|
char data = 1;
|
|
i8042_command(&data, command | 1 << 12);
|
|
}
|
|
|
|
static void touchpad_led_off(void)
|
|
{
|
|
int command = 0x97;
|
|
char data = 2;
|
|
i8042_command(&data, command | 1 << 12);
|
|
}
|
|
|
|
static void touchpad_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
if (value > 0)
|
|
touchpad_led_on();
|
|
else
|
|
touchpad_led_off();
|
|
}
|
|
|
|
static struct led_classdev touchpad_led = {
|
|
.name = "dell-laptop::touchpad",
|
|
.brightness_set = touchpad_led_set,
|
|
.flags = LED_CORE_SUSPENDRESUME,
|
|
};
|
|
|
|
static int __init touchpad_led_init(struct device *dev)
|
|
{
|
|
return led_classdev_register(dev, &touchpad_led);
|
|
}
|
|
|
|
static void touchpad_led_exit(void)
|
|
{
|
|
led_classdev_unregister(&touchpad_led);
|
|
}
|
|
|
|
/*
|
|
* Derived from information in smbios-keyboard-ctl:
|
|
*
|
|
* cbClass 4
|
|
* cbSelect 11
|
|
* Keyboard illumination
|
|
* cbArg1 determines the function to be performed
|
|
*
|
|
* cbArg1 0x0 = Get Feature Information
|
|
* cbRES1 Standard return codes (0, -1, -2)
|
|
* cbRES2, word0 Bitmap of user-selectable modes
|
|
* bit 0 Always off (All systems)
|
|
* bit 1 Always on (Travis ATG, Siberia)
|
|
* bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
|
|
* bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
|
|
* bit 4 Auto: Input-activity-based On; input-activity based Off
|
|
* bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
|
|
* bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
|
|
* bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
|
|
* bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
|
|
* bits 9-15 Reserved for future use
|
|
* cbRES2, byte2 Reserved for future use
|
|
* cbRES2, byte3 Keyboard illumination type
|
|
* 0 Reserved
|
|
* 1 Tasklight
|
|
* 2 Backlight
|
|
* 3-255 Reserved for future use
|
|
* cbRES3, byte0 Supported auto keyboard illumination trigger bitmap.
|
|
* bit 0 Any keystroke
|
|
* bit 1 Touchpad activity
|
|
* bit 2 Pointing stick
|
|
* bit 3 Any mouse
|
|
* bits 4-7 Reserved for future use
|
|
* cbRES3, byte1 Supported timeout unit bitmap
|
|
* bit 0 Seconds
|
|
* bit 1 Minutes
|
|
* bit 2 Hours
|
|
* bit 3 Days
|
|
* bits 4-7 Reserved for future use
|
|
* cbRES3, byte2 Number of keyboard light brightness levels
|
|
* cbRES4, byte0 Maximum acceptable seconds value (0 if seconds not supported).
|
|
* cbRES4, byte1 Maximum acceptable minutes value (0 if minutes not supported).
|
|
* cbRES4, byte2 Maximum acceptable hours value (0 if hours not supported).
|
|
* cbRES4, byte3 Maximum acceptable days value (0 if days not supported)
|
|
*
|
|
* cbArg1 0x1 = Get Current State
|
|
* cbRES1 Standard return codes (0, -1, -2)
|
|
* cbRES2, word0 Bitmap of current mode state
|
|
* bit 0 Always off (All systems)
|
|
* bit 1 Always on (Travis ATG, Siberia)
|
|
* bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
|
|
* bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
|
|
* bit 4 Auto: Input-activity-based On; input-activity based Off
|
|
* bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
|
|
* bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
|
|
* bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
|
|
* bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
|
|
* bits 9-15 Reserved for future use
|
|
* Note: Only One bit can be set
|
|
* cbRES2, byte2 Currently active auto keyboard illumination triggers.
|
|
* bit 0 Any keystroke
|
|
* bit 1 Touchpad activity
|
|
* bit 2 Pointing stick
|
|
* bit 3 Any mouse
|
|
* bits 4-7 Reserved for future use
|
|
* cbRES2, byte3 Current Timeout
|
|
* bits 7:6 Timeout units indicator:
|
|
* 00b Seconds
|
|
* 01b Minutes
|
|
* 10b Hours
|
|
* 11b Days
|
|
* bits 5:0 Timeout value (0-63) in sec/min/hr/day
|
|
* NOTE: A value of 0 means always on (no timeout) if any bits of RES3 byte
|
|
* are set upon return from the [Get feature information] call.
|
|
* cbRES3, byte0 Current setting of ALS value that turns the light on or off.
|
|
* cbRES3, byte1 Current ALS reading
|
|
* cbRES3, byte2 Current keyboard light level.
|
|
*
|
|
* cbArg1 0x2 = Set New State
|
|
* cbRES1 Standard return codes (0, -1, -2)
|
|
* cbArg2, word0 Bitmap of current mode state
|
|
* bit 0 Always off (All systems)
|
|
* bit 1 Always on (Travis ATG, Siberia)
|
|
* bit 2 Auto: ALS-based On; ALS-based Off (Travis ATG)
|
|
* bit 3 Auto: ALS- and input-activity-based On; input-activity based Off
|
|
* bit 4 Auto: Input-activity-based On; input-activity based Off
|
|
* bit 5 Auto: Input-activity-based On (illumination level 25%); input-activity based Off
|
|
* bit 6 Auto: Input-activity-based On (illumination level 50%); input-activity based Off
|
|
* bit 7 Auto: Input-activity-based On (illumination level 75%); input-activity based Off
|
|
* bit 8 Auto: Input-activity-based On (illumination level 100%); input-activity based Off
|
|
* bits 9-15 Reserved for future use
|
|
* Note: Only One bit can be set
|
|
* cbArg2, byte2 Desired auto keyboard illumination triggers. Must remain inactive to allow
|
|
* keyboard to turn off automatically.
|
|
* bit 0 Any keystroke
|
|
* bit 1 Touchpad activity
|
|
* bit 2 Pointing stick
|
|
* bit 3 Any mouse
|
|
* bits 4-7 Reserved for future use
|
|
* cbArg2, byte3 Desired Timeout
|
|
* bits 7:6 Timeout units indicator:
|
|
* 00b Seconds
|
|
* 01b Minutes
|
|
* 10b Hours
|
|
* 11b Days
|
|
* bits 5:0 Timeout value (0-63) in sec/min/hr/day
|
|
* cbArg3, byte0 Desired setting of ALS value that turns the light on or off.
|
|
* cbArg3, byte2 Desired keyboard light level.
|
|
*/
|
|
|
|
|
|
enum kbd_timeout_unit {
|
|
KBD_TIMEOUT_SECONDS = 0,
|
|
KBD_TIMEOUT_MINUTES,
|
|
KBD_TIMEOUT_HOURS,
|
|
KBD_TIMEOUT_DAYS,
|
|
};
|
|
|
|
enum kbd_mode_bit {
|
|
KBD_MODE_BIT_OFF = 0,
|
|
KBD_MODE_BIT_ON,
|
|
KBD_MODE_BIT_ALS,
|
|
KBD_MODE_BIT_TRIGGER_ALS,
|
|
KBD_MODE_BIT_TRIGGER,
|
|
KBD_MODE_BIT_TRIGGER_25,
|
|
KBD_MODE_BIT_TRIGGER_50,
|
|
KBD_MODE_BIT_TRIGGER_75,
|
|
KBD_MODE_BIT_TRIGGER_100,
|
|
};
|
|
|
|
#define kbd_is_als_mode_bit(bit) \
|
|
((bit) == KBD_MODE_BIT_ALS || (bit) == KBD_MODE_BIT_TRIGGER_ALS)
|
|
#define kbd_is_trigger_mode_bit(bit) \
|
|
((bit) >= KBD_MODE_BIT_TRIGGER_ALS && (bit) <= KBD_MODE_BIT_TRIGGER_100)
|
|
#define kbd_is_level_mode_bit(bit) \
|
|
((bit) >= KBD_MODE_BIT_TRIGGER_25 && (bit) <= KBD_MODE_BIT_TRIGGER_100)
|
|
|
|
struct kbd_info {
|
|
u16 modes;
|
|
u8 type;
|
|
u8 triggers;
|
|
u8 levels;
|
|
u8 seconds;
|
|
u8 minutes;
|
|
u8 hours;
|
|
u8 days;
|
|
};
|
|
|
|
struct kbd_state {
|
|
u8 mode_bit;
|
|
u8 triggers;
|
|
u8 timeout_value;
|
|
u8 timeout_unit;
|
|
u8 als_setting;
|
|
u8 als_value;
|
|
u8 level;
|
|
};
|
|
|
|
static const int kbd_tokens[] = {
|
|
KBD_LED_OFF_TOKEN,
|
|
KBD_LED_AUTO_25_TOKEN,
|
|
KBD_LED_AUTO_50_TOKEN,
|
|
KBD_LED_AUTO_75_TOKEN,
|
|
KBD_LED_AUTO_100_TOKEN,
|
|
KBD_LED_ON_TOKEN,
|
|
};
|
|
|
|
static u16 kbd_token_bits;
|
|
|
|
static struct kbd_info kbd_info;
|
|
static bool kbd_als_supported;
|
|
static bool kbd_triggers_supported;
|
|
|
|
static u8 kbd_mode_levels[16];
|
|
static int kbd_mode_levels_count;
|
|
|
|
static u8 kbd_previous_level;
|
|
static u8 kbd_previous_mode_bit;
|
|
|
|
static bool kbd_led_present;
|
|
|
|
/*
|
|
* NOTE: there are three ways to set the keyboard backlight level.
|
|
* First, via kbd_state.mode_bit (assigning KBD_MODE_BIT_TRIGGER_* value).
|
|
* Second, via kbd_state.level (assigning numerical value <= kbd_info.levels).
|
|
* Third, via SMBIOS tokens (KBD_LED_* in kbd_tokens)
|
|
*
|
|
* There are laptops which support only one of these methods. If we want to
|
|
* support as many machines as possible we need to implement all three methods.
|
|
* The first two methods use the kbd_state structure. The third uses SMBIOS
|
|
* tokens. If kbd_info.levels == 0, the machine does not support setting the
|
|
* keyboard backlight level via kbd_state.level.
|
|
*/
|
|
|
|
static int kbd_get_info(struct kbd_info *info)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
u8 units;
|
|
int ret;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
|
|
buffer->input[0] = 0x0;
|
|
dell_smbios_send_request(4, 11);
|
|
ret = buffer->output[0];
|
|
|
|
if (ret) {
|
|
ret = dell_smi_error(ret);
|
|
goto out;
|
|
}
|
|
|
|
info->modes = buffer->output[1] & 0xFFFF;
|
|
info->type = (buffer->output[1] >> 24) & 0xFF;
|
|
info->triggers = buffer->output[2] & 0xFF;
|
|
units = (buffer->output[2] >> 8) & 0xFF;
|
|
info->levels = (buffer->output[2] >> 16) & 0xFF;
|
|
|
|
if (units & BIT(0))
|
|
info->seconds = (buffer->output[3] >> 0) & 0xFF;
|
|
if (units & BIT(1))
|
|
info->minutes = (buffer->output[3] >> 8) & 0xFF;
|
|
if (units & BIT(2))
|
|
info->hours = (buffer->output[3] >> 16) & 0xFF;
|
|
if (units & BIT(3))
|
|
info->days = (buffer->output[3] >> 24) & 0xFF;
|
|
|
|
out:
|
|
dell_smbios_release_buffer();
|
|
return ret;
|
|
}
|
|
|
|
static unsigned int kbd_get_max_level(void)
|
|
{
|
|
if (kbd_info.levels != 0)
|
|
return kbd_info.levels;
|
|
if (kbd_mode_levels_count > 0)
|
|
return kbd_mode_levels_count - 1;
|
|
return 0;
|
|
}
|
|
|
|
static int kbd_get_level(struct kbd_state *state)
|
|
{
|
|
int i;
|
|
|
|
if (kbd_info.levels != 0)
|
|
return state->level;
|
|
|
|
if (kbd_mode_levels_count > 0) {
|
|
for (i = 0; i < kbd_mode_levels_count; ++i)
|
|
if (kbd_mode_levels[i] == state->mode_bit)
|
|
return i;
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int kbd_set_level(struct kbd_state *state, u8 level)
|
|
{
|
|
if (kbd_info.levels != 0) {
|
|
if (level != 0)
|
|
kbd_previous_level = level;
|
|
if (state->level == level)
|
|
return 0;
|
|
state->level = level;
|
|
if (level != 0 && state->mode_bit == KBD_MODE_BIT_OFF)
|
|
state->mode_bit = kbd_previous_mode_bit;
|
|
else if (level == 0 && state->mode_bit != KBD_MODE_BIT_OFF) {
|
|
kbd_previous_mode_bit = state->mode_bit;
|
|
state->mode_bit = KBD_MODE_BIT_OFF;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (kbd_mode_levels_count > 0 && level < kbd_mode_levels_count) {
|
|
if (level != 0)
|
|
kbd_previous_level = level;
|
|
state->mode_bit = kbd_mode_levels[level];
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int kbd_get_state(struct kbd_state *state)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
int ret;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
|
|
buffer->input[0] = 0x1;
|
|
dell_smbios_send_request(4, 11);
|
|
ret = buffer->output[0];
|
|
|
|
if (ret) {
|
|
ret = dell_smi_error(ret);
|
|
goto out;
|
|
}
|
|
|
|
state->mode_bit = ffs(buffer->output[1] & 0xFFFF);
|
|
if (state->mode_bit != 0)
|
|
state->mode_bit--;
|
|
|
|
state->triggers = (buffer->output[1] >> 16) & 0xFF;
|
|
state->timeout_value = (buffer->output[1] >> 24) & 0x3F;
|
|
state->timeout_unit = (buffer->output[1] >> 30) & 0x3;
|
|
state->als_setting = buffer->output[2] & 0xFF;
|
|
state->als_value = (buffer->output[2] >> 8) & 0xFF;
|
|
state->level = (buffer->output[2] >> 16) & 0xFF;
|
|
|
|
out:
|
|
dell_smbios_release_buffer();
|
|
return ret;
|
|
}
|
|
|
|
static int kbd_set_state(struct kbd_state *state)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
int ret;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = 0x2;
|
|
buffer->input[1] = BIT(state->mode_bit) & 0xFFFF;
|
|
buffer->input[1] |= (state->triggers & 0xFF) << 16;
|
|
buffer->input[1] |= (state->timeout_value & 0x3F) << 24;
|
|
buffer->input[1] |= (state->timeout_unit & 0x3) << 30;
|
|
buffer->input[2] = state->als_setting & 0xFF;
|
|
buffer->input[2] |= (state->level & 0xFF) << 16;
|
|
dell_smbios_send_request(4, 11);
|
|
ret = buffer->output[0];
|
|
dell_smbios_release_buffer();
|
|
|
|
return dell_smi_error(ret);
|
|
}
|
|
|
|
static int kbd_set_state_safe(struct kbd_state *state, struct kbd_state *old)
|
|
{
|
|
int ret;
|
|
|
|
ret = kbd_set_state(state);
|
|
if (ret == 0)
|
|
return 0;
|
|
|
|
/*
|
|
* When setting the new state fails,try to restore the previous one.
|
|
* This is needed on some machines where BIOS sets a default state when
|
|
* setting a new state fails. This default state could be all off.
|
|
*/
|
|
|
|
if (kbd_set_state(old))
|
|
pr_err("Setting old previous keyboard state failed\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kbd_set_token_bit(u8 bit)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
struct calling_interface_token *token;
|
|
int ret;
|
|
|
|
if (bit >= ARRAY_SIZE(kbd_tokens))
|
|
return -EINVAL;
|
|
|
|
token = dell_smbios_find_token(kbd_tokens[bit]);
|
|
if (!token)
|
|
return -EINVAL;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = token->location;
|
|
buffer->input[1] = token->value;
|
|
dell_smbios_send_request(1, 0);
|
|
ret = buffer->output[0];
|
|
dell_smbios_release_buffer();
|
|
|
|
return dell_smi_error(ret);
|
|
}
|
|
|
|
static int kbd_get_token_bit(u8 bit)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
struct calling_interface_token *token;
|
|
int ret;
|
|
int val;
|
|
|
|
if (bit >= ARRAY_SIZE(kbd_tokens))
|
|
return -EINVAL;
|
|
|
|
token = dell_smbios_find_token(kbd_tokens[bit]);
|
|
if (!token)
|
|
return -EINVAL;
|
|
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = token->location;
|
|
dell_smbios_send_request(0, 0);
|
|
ret = buffer->output[0];
|
|
val = buffer->output[1];
|
|
dell_smbios_release_buffer();
|
|
|
|
if (ret)
|
|
return dell_smi_error(ret);
|
|
|
|
return (val == token->value);
|
|
}
|
|
|
|
static int kbd_get_first_active_token_bit(void)
|
|
{
|
|
int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i) {
|
|
ret = kbd_get_token_bit(i);
|
|
if (ret == 1)
|
|
return i;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kbd_get_valid_token_counts(void)
|
|
{
|
|
return hweight16(kbd_token_bits);
|
|
}
|
|
|
|
static inline int kbd_init_info(void)
|
|
{
|
|
struct kbd_state state;
|
|
int ret;
|
|
int i;
|
|
|
|
ret = kbd_get_info(&kbd_info);
|
|
if (ret)
|
|
return ret;
|
|
|
|
kbd_get_state(&state);
|
|
|
|
/* NOTE: timeout value is stored in 6 bits so max value is 63 */
|
|
if (kbd_info.seconds > 63)
|
|
kbd_info.seconds = 63;
|
|
if (kbd_info.minutes > 63)
|
|
kbd_info.minutes = 63;
|
|
if (kbd_info.hours > 63)
|
|
kbd_info.hours = 63;
|
|
if (kbd_info.days > 63)
|
|
kbd_info.days = 63;
|
|
|
|
/* NOTE: On tested machines ON mode did not work and caused
|
|
* problems (turned backlight off) so do not use it
|
|
*/
|
|
kbd_info.modes &= ~BIT(KBD_MODE_BIT_ON);
|
|
|
|
kbd_previous_level = kbd_get_level(&state);
|
|
kbd_previous_mode_bit = state.mode_bit;
|
|
|
|
if (kbd_previous_level == 0 && kbd_get_max_level() != 0)
|
|
kbd_previous_level = 1;
|
|
|
|
if (kbd_previous_mode_bit == KBD_MODE_BIT_OFF) {
|
|
kbd_previous_mode_bit =
|
|
ffs(kbd_info.modes & ~BIT(KBD_MODE_BIT_OFF));
|
|
if (kbd_previous_mode_bit != 0)
|
|
kbd_previous_mode_bit--;
|
|
}
|
|
|
|
if (kbd_info.modes & (BIT(KBD_MODE_BIT_ALS) |
|
|
BIT(KBD_MODE_BIT_TRIGGER_ALS)))
|
|
kbd_als_supported = true;
|
|
|
|
if (kbd_info.modes & (
|
|
BIT(KBD_MODE_BIT_TRIGGER_ALS) | BIT(KBD_MODE_BIT_TRIGGER) |
|
|
BIT(KBD_MODE_BIT_TRIGGER_25) | BIT(KBD_MODE_BIT_TRIGGER_50) |
|
|
BIT(KBD_MODE_BIT_TRIGGER_75) | BIT(KBD_MODE_BIT_TRIGGER_100)
|
|
))
|
|
kbd_triggers_supported = true;
|
|
|
|
/* kbd_mode_levels[0] is reserved, see below */
|
|
for (i = 0; i < 16; ++i)
|
|
if (kbd_is_level_mode_bit(i) && (BIT(i) & kbd_info.modes))
|
|
kbd_mode_levels[1 + kbd_mode_levels_count++] = i;
|
|
|
|
/*
|
|
* Find the first supported mode and assign to kbd_mode_levels[0].
|
|
* This should be 0 (off), but we cannot depend on the BIOS to
|
|
* support 0.
|
|
*/
|
|
if (kbd_mode_levels_count > 0) {
|
|
for (i = 0; i < 16; ++i) {
|
|
if (BIT(i) & kbd_info.modes) {
|
|
kbd_mode_levels[0] = i;
|
|
break;
|
|
}
|
|
}
|
|
kbd_mode_levels_count++;
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static inline void kbd_init_tokens(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(kbd_tokens); ++i)
|
|
if (dell_smbios_find_token(kbd_tokens[i]))
|
|
kbd_token_bits |= BIT(i);
|
|
}
|
|
|
|
static void kbd_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = kbd_init_info();
|
|
kbd_init_tokens();
|
|
|
|
if (kbd_token_bits != 0 || ret == 0)
|
|
kbd_led_present = true;
|
|
}
|
|
|
|
static ssize_t kbd_led_timeout_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct kbd_state new_state;
|
|
struct kbd_state state;
|
|
bool convert;
|
|
int value;
|
|
int ret;
|
|
char ch;
|
|
u8 unit;
|
|
int i;
|
|
|
|
ret = sscanf(buf, "%d %c", &value, &ch);
|
|
if (ret < 1)
|
|
return -EINVAL;
|
|
else if (ret == 1)
|
|
ch = 's';
|
|
|
|
if (value < 0)
|
|
return -EINVAL;
|
|
|
|
convert = false;
|
|
|
|
switch (ch) {
|
|
case 's':
|
|
if (value > kbd_info.seconds)
|
|
convert = true;
|
|
unit = KBD_TIMEOUT_SECONDS;
|
|
break;
|
|
case 'm':
|
|
if (value > kbd_info.minutes)
|
|
convert = true;
|
|
unit = KBD_TIMEOUT_MINUTES;
|
|
break;
|
|
case 'h':
|
|
if (value > kbd_info.hours)
|
|
convert = true;
|
|
unit = KBD_TIMEOUT_HOURS;
|
|
break;
|
|
case 'd':
|
|
if (value > kbd_info.days)
|
|
convert = true;
|
|
unit = KBD_TIMEOUT_DAYS;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (quirks && quirks->needs_kbd_timeouts)
|
|
convert = true;
|
|
|
|
if (convert) {
|
|
/* Convert value from current units to seconds */
|
|
switch (unit) {
|
|
case KBD_TIMEOUT_DAYS:
|
|
value *= 24;
|
|
case KBD_TIMEOUT_HOURS:
|
|
value *= 60;
|
|
case KBD_TIMEOUT_MINUTES:
|
|
value *= 60;
|
|
unit = KBD_TIMEOUT_SECONDS;
|
|
}
|
|
|
|
if (quirks && quirks->needs_kbd_timeouts) {
|
|
for (i = 0; quirks->kbd_timeouts[i] != -1; i++) {
|
|
if (value <= quirks->kbd_timeouts[i]) {
|
|
value = quirks->kbd_timeouts[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (value <= kbd_info.seconds && kbd_info.seconds) {
|
|
unit = KBD_TIMEOUT_SECONDS;
|
|
} else if (value / 60 <= kbd_info.minutes && kbd_info.minutes) {
|
|
value /= 60;
|
|
unit = KBD_TIMEOUT_MINUTES;
|
|
} else if (value / (60 * 60) <= kbd_info.hours && kbd_info.hours) {
|
|
value /= (60 * 60);
|
|
unit = KBD_TIMEOUT_HOURS;
|
|
} else if (value / (60 * 60 * 24) <= kbd_info.days && kbd_info.days) {
|
|
value /= (60 * 60 * 24);
|
|
unit = KBD_TIMEOUT_DAYS;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
new_state = state;
|
|
new_state.timeout_value = value;
|
|
new_state.timeout_unit = unit;
|
|
|
|
ret = kbd_set_state_safe(&new_state, &state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t kbd_led_timeout_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct kbd_state state;
|
|
int ret;
|
|
int len;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
len = sprintf(buf, "%d", state.timeout_value);
|
|
|
|
switch (state.timeout_unit) {
|
|
case KBD_TIMEOUT_SECONDS:
|
|
return len + sprintf(buf+len, "s\n");
|
|
case KBD_TIMEOUT_MINUTES:
|
|
return len + sprintf(buf+len, "m\n");
|
|
case KBD_TIMEOUT_HOURS:
|
|
return len + sprintf(buf+len, "h\n");
|
|
case KBD_TIMEOUT_DAYS:
|
|
return len + sprintf(buf+len, "d\n");
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR(stop_timeout, S_IRUGO | S_IWUSR,
|
|
kbd_led_timeout_show, kbd_led_timeout_store);
|
|
|
|
static const char * const kbd_led_triggers[] = {
|
|
"keyboard",
|
|
"touchpad",
|
|
/*"trackstick"*/ NULL, /* NOTE: trackstick is just alias for touchpad */
|
|
"mouse",
|
|
};
|
|
|
|
static ssize_t kbd_led_triggers_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct kbd_state new_state;
|
|
struct kbd_state state;
|
|
bool triggers_enabled = false;
|
|
int trigger_bit = -1;
|
|
char trigger[21];
|
|
int i, ret;
|
|
|
|
ret = sscanf(buf, "%20s", trigger);
|
|
if (ret != 1)
|
|
return -EINVAL;
|
|
|
|
if (trigger[0] != '+' && trigger[0] != '-')
|
|
return -EINVAL;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (kbd_triggers_supported)
|
|
triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
|
|
|
|
if (kbd_triggers_supported) {
|
|
for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
|
|
if (!(kbd_info.triggers & BIT(i)))
|
|
continue;
|
|
if (!kbd_led_triggers[i])
|
|
continue;
|
|
if (strcmp(trigger+1, kbd_led_triggers[i]) != 0)
|
|
continue;
|
|
if (trigger[0] == '+' &&
|
|
triggers_enabled && (state.triggers & BIT(i)))
|
|
return count;
|
|
if (trigger[0] == '-' &&
|
|
(!triggers_enabled || !(state.triggers & BIT(i))))
|
|
return count;
|
|
trigger_bit = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (trigger_bit != -1) {
|
|
new_state = state;
|
|
if (trigger[0] == '+')
|
|
new_state.triggers |= BIT(trigger_bit);
|
|
else {
|
|
new_state.triggers &= ~BIT(trigger_bit);
|
|
/* NOTE: trackstick bit (2) must be disabled when
|
|
* disabling touchpad bit (1), otherwise touchpad
|
|
* bit (1) will not be disabled */
|
|
if (trigger_bit == 1)
|
|
new_state.triggers &= ~BIT(2);
|
|
}
|
|
if ((kbd_info.triggers & new_state.triggers) !=
|
|
new_state.triggers)
|
|
return -EINVAL;
|
|
if (new_state.triggers && !triggers_enabled) {
|
|
new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
|
|
kbd_set_level(&new_state, kbd_previous_level);
|
|
} else if (new_state.triggers == 0) {
|
|
kbd_set_level(&new_state, 0);
|
|
}
|
|
if (!(kbd_info.modes & BIT(new_state.mode_bit)))
|
|
return -EINVAL;
|
|
ret = kbd_set_state_safe(&new_state, &state);
|
|
if (ret)
|
|
return ret;
|
|
if (new_state.mode_bit != KBD_MODE_BIT_OFF)
|
|
kbd_previous_mode_bit = new_state.mode_bit;
|
|
return count;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static ssize_t kbd_led_triggers_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct kbd_state state;
|
|
bool triggers_enabled;
|
|
int level, i, ret;
|
|
int len = 0;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
len = 0;
|
|
|
|
if (kbd_triggers_supported) {
|
|
triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
|
|
level = kbd_get_level(&state);
|
|
for (i = 0; i < ARRAY_SIZE(kbd_led_triggers); ++i) {
|
|
if (!(kbd_info.triggers & BIT(i)))
|
|
continue;
|
|
if (!kbd_led_triggers[i])
|
|
continue;
|
|
if ((triggers_enabled || level <= 0) &&
|
|
(state.triggers & BIT(i)))
|
|
buf[len++] = '+';
|
|
else
|
|
buf[len++] = '-';
|
|
len += sprintf(buf+len, "%s ", kbd_led_triggers[i]);
|
|
}
|
|
}
|
|
|
|
if (len)
|
|
buf[len - 1] = '\n';
|
|
|
|
return len;
|
|
}
|
|
|
|
static DEVICE_ATTR(start_triggers, S_IRUGO | S_IWUSR,
|
|
kbd_led_triggers_show, kbd_led_triggers_store);
|
|
|
|
static ssize_t kbd_led_als_enabled_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct kbd_state new_state;
|
|
struct kbd_state state;
|
|
bool triggers_enabled = false;
|
|
int enable;
|
|
int ret;
|
|
|
|
ret = kstrtoint(buf, 0, &enable);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (enable == kbd_is_als_mode_bit(state.mode_bit))
|
|
return count;
|
|
|
|
new_state = state;
|
|
|
|
if (kbd_triggers_supported)
|
|
triggers_enabled = kbd_is_trigger_mode_bit(state.mode_bit);
|
|
|
|
if (enable) {
|
|
if (triggers_enabled)
|
|
new_state.mode_bit = KBD_MODE_BIT_TRIGGER_ALS;
|
|
else
|
|
new_state.mode_bit = KBD_MODE_BIT_ALS;
|
|
} else {
|
|
if (triggers_enabled) {
|
|
new_state.mode_bit = KBD_MODE_BIT_TRIGGER;
|
|
kbd_set_level(&new_state, kbd_previous_level);
|
|
} else {
|
|
new_state.mode_bit = KBD_MODE_BIT_ON;
|
|
}
|
|
}
|
|
if (!(kbd_info.modes & BIT(new_state.mode_bit)))
|
|
return -EINVAL;
|
|
|
|
ret = kbd_set_state_safe(&new_state, &state);
|
|
if (ret)
|
|
return ret;
|
|
kbd_previous_mode_bit = new_state.mode_bit;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t kbd_led_als_enabled_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct kbd_state state;
|
|
bool enabled = false;
|
|
int ret;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
enabled = kbd_is_als_mode_bit(state.mode_bit);
|
|
|
|
return sprintf(buf, "%d\n", enabled ? 1 : 0);
|
|
}
|
|
|
|
static DEVICE_ATTR(als_enabled, S_IRUGO | S_IWUSR,
|
|
kbd_led_als_enabled_show, kbd_led_als_enabled_store);
|
|
|
|
static ssize_t kbd_led_als_setting_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
struct kbd_state state;
|
|
struct kbd_state new_state;
|
|
u8 setting;
|
|
int ret;
|
|
|
|
ret = kstrtou8(buf, 10, &setting);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
new_state = state;
|
|
new_state.als_setting = setting;
|
|
|
|
ret = kbd_set_state_safe(&new_state, &state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t kbd_led_als_setting_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct kbd_state state;
|
|
int ret;
|
|
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return sprintf(buf, "%d\n", state.als_setting);
|
|
}
|
|
|
|
static DEVICE_ATTR(als_setting, S_IRUGO | S_IWUSR,
|
|
kbd_led_als_setting_show, kbd_led_als_setting_store);
|
|
|
|
static struct attribute *kbd_led_attrs[] = {
|
|
&dev_attr_stop_timeout.attr,
|
|
&dev_attr_start_triggers.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group kbd_led_group = {
|
|
.attrs = kbd_led_attrs,
|
|
};
|
|
|
|
static struct attribute *kbd_led_als_attrs[] = {
|
|
&dev_attr_als_enabled.attr,
|
|
&dev_attr_als_setting.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group kbd_led_als_group = {
|
|
.attrs = kbd_led_als_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *kbd_led_groups[] = {
|
|
&kbd_led_group,
|
|
&kbd_led_als_group,
|
|
NULL,
|
|
};
|
|
|
|
static enum led_brightness kbd_led_level_get(struct led_classdev *led_cdev)
|
|
{
|
|
int ret;
|
|
u16 num;
|
|
struct kbd_state state;
|
|
|
|
if (kbd_get_max_level()) {
|
|
ret = kbd_get_state(&state);
|
|
if (ret)
|
|
return 0;
|
|
ret = kbd_get_level(&state);
|
|
if (ret < 0)
|
|
return 0;
|
|
return ret;
|
|
}
|
|
|
|
if (kbd_get_valid_token_counts()) {
|
|
ret = kbd_get_first_active_token_bit();
|
|
if (ret < 0)
|
|
return 0;
|
|
for (num = kbd_token_bits; num != 0 && ret > 0; --ret)
|
|
num &= num - 1; /* clear the first bit set */
|
|
if (num == 0)
|
|
return 0;
|
|
return ffs(num) - 1;
|
|
}
|
|
|
|
pr_warn("Keyboard brightness level control not supported\n");
|
|
return 0;
|
|
}
|
|
|
|
static void kbd_led_level_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
struct kbd_state state;
|
|
struct kbd_state new_state;
|
|
u16 num;
|
|
|
|
if (kbd_get_max_level()) {
|
|
if (kbd_get_state(&state))
|
|
return;
|
|
new_state = state;
|
|
if (kbd_set_level(&new_state, value))
|
|
return;
|
|
kbd_set_state_safe(&new_state, &state);
|
|
return;
|
|
}
|
|
|
|
if (kbd_get_valid_token_counts()) {
|
|
for (num = kbd_token_bits; num != 0 && value > 0; --value)
|
|
num &= num - 1; /* clear the first bit set */
|
|
if (num == 0)
|
|
return;
|
|
kbd_set_token_bit(ffs(num) - 1);
|
|
return;
|
|
}
|
|
|
|
pr_warn("Keyboard brightness level control not supported\n");
|
|
}
|
|
|
|
static struct led_classdev kbd_led = {
|
|
.name = "dell::kbd_backlight",
|
|
.brightness_set = kbd_led_level_set,
|
|
.brightness_get = kbd_led_level_get,
|
|
.groups = kbd_led_groups,
|
|
};
|
|
|
|
static int __init kbd_led_init(struct device *dev)
|
|
{
|
|
kbd_init();
|
|
if (!kbd_led_present)
|
|
return -ENODEV;
|
|
if (!kbd_als_supported)
|
|
kbd_led_groups[1] = NULL;
|
|
kbd_led.max_brightness = kbd_get_max_level();
|
|
if (!kbd_led.max_brightness) {
|
|
kbd_led.max_brightness = kbd_get_valid_token_counts();
|
|
if (kbd_led.max_brightness)
|
|
kbd_led.max_brightness--;
|
|
}
|
|
return led_classdev_register(dev, &kbd_led);
|
|
}
|
|
|
|
static void brightness_set_exit(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
/* Don't change backlight level on exit */
|
|
};
|
|
|
|
static void kbd_led_exit(void)
|
|
{
|
|
if (!kbd_led_present)
|
|
return;
|
|
kbd_led.brightness_set = brightness_set_exit;
|
|
led_classdev_unregister(&kbd_led);
|
|
}
|
|
|
|
static int __init dell_init(void)
|
|
{
|
|
struct calling_interface_buffer *buffer;
|
|
struct calling_interface_token *token;
|
|
int max_intensity = 0;
|
|
int ret;
|
|
|
|
if (!dmi_check_system(dell_device_table))
|
|
return -ENODEV;
|
|
|
|
quirks = NULL;
|
|
/* find if this machine support other functions */
|
|
dmi_check_system(dell_quirks);
|
|
|
|
ret = platform_driver_register(&platform_driver);
|
|
if (ret)
|
|
goto fail_platform_driver;
|
|
platform_device = platform_device_alloc("dell-laptop", -1);
|
|
if (!platform_device) {
|
|
ret = -ENOMEM;
|
|
goto fail_platform_device1;
|
|
}
|
|
ret = platform_device_add(platform_device);
|
|
if (ret)
|
|
goto fail_platform_device2;
|
|
|
|
ret = dell_setup_rfkill();
|
|
|
|
if (ret) {
|
|
pr_warn("Unable to setup rfkill\n");
|
|
goto fail_rfkill;
|
|
}
|
|
|
|
if (quirks && quirks->touchpad_led)
|
|
touchpad_led_init(&platform_device->dev);
|
|
|
|
kbd_led_init(&platform_device->dev);
|
|
|
|
dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
|
|
if (dell_laptop_dir != NULL)
|
|
debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
|
|
&dell_debugfs_fops);
|
|
|
|
if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
|
|
return 0;
|
|
|
|
token = dell_smbios_find_token(BRIGHTNESS_TOKEN);
|
|
if (token) {
|
|
buffer = dell_smbios_get_buffer();
|
|
buffer->input[0] = token->location;
|
|
dell_smbios_send_request(0, 2);
|
|
if (buffer->output[0] == 0)
|
|
max_intensity = buffer->output[3];
|
|
dell_smbios_release_buffer();
|
|
}
|
|
|
|
if (max_intensity) {
|
|
struct backlight_properties props;
|
|
memset(&props, 0, sizeof(struct backlight_properties));
|
|
props.type = BACKLIGHT_PLATFORM;
|
|
props.max_brightness = max_intensity;
|
|
dell_backlight_device = backlight_device_register("dell_backlight",
|
|
&platform_device->dev,
|
|
NULL,
|
|
&dell_ops,
|
|
&props);
|
|
|
|
if (IS_ERR(dell_backlight_device)) {
|
|
ret = PTR_ERR(dell_backlight_device);
|
|
dell_backlight_device = NULL;
|
|
goto fail_backlight;
|
|
}
|
|
|
|
dell_backlight_device->props.brightness =
|
|
dell_get_intensity(dell_backlight_device);
|
|
backlight_update_status(dell_backlight_device);
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_backlight:
|
|
dell_cleanup_rfkill();
|
|
fail_rfkill:
|
|
platform_device_del(platform_device);
|
|
fail_platform_device2:
|
|
platform_device_put(platform_device);
|
|
fail_platform_device1:
|
|
platform_driver_unregister(&platform_driver);
|
|
fail_platform_driver:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit dell_exit(void)
|
|
{
|
|
debugfs_remove_recursive(dell_laptop_dir);
|
|
if (quirks && quirks->touchpad_led)
|
|
touchpad_led_exit();
|
|
kbd_led_exit();
|
|
backlight_device_unregister(dell_backlight_device);
|
|
dell_cleanup_rfkill();
|
|
if (platform_device) {
|
|
platform_device_unregister(platform_device);
|
|
platform_driver_unregister(&platform_driver);
|
|
}
|
|
}
|
|
|
|
/* dell-rbtn.c driver export functions which will not work correctly (and could
|
|
* cause kernel crash) if they are called before dell-rbtn.c init code. This is
|
|
* not problem when dell-rbtn.c is compiled as external module. When both files
|
|
* (dell-rbtn.c and dell-laptop.c) are compiled statically into kernel, then we
|
|
* need to ensure that dell_init() will be called after initializing dell-rbtn.
|
|
* This can be achieved by late_initcall() instead module_init().
|
|
*/
|
|
late_initcall(dell_init);
|
|
module_exit(dell_exit);
|
|
|
|
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
|
|
MODULE_AUTHOR("Gabriele Mazzotta <gabriele.mzt@gmail.com>");
|
|
MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
|
|
MODULE_DESCRIPTION("Dell laptop driver");
|
|
MODULE_LICENSE("GPL");
|