#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/backlight.h>
#include <linux/err.h>
#include <linux/dmi.h>
#include <linux/io.h>
#include <linux/rfkill.h>
#include <linux/power_supply.h>
#include <linux/sysfs.h>
#include <linux/acpi.h>
#include <linux/mm.h>
#include <linux/i8042.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <acpi/battery.h>
#include <acpi/video.h>
#include "dell-rbtn.h"
#include "dell-smbios.h"
#include "dell-wmi-privacy.h"
struct quirk_entry {
bool touchpad_led;
bool kbd_led_not_present;
bool kbd_led_levels_off_1;
bool kbd_missing_ac_tag;
bool needs_kbd_timeouts;
int kbd_timeouts[];
};
static struct quirk_entry *quirks;
static struct quirk_entry quirk_dell_vostro_v130 = {
.touchpad_led = true,
};
static int __init dmi_matched(const struct dmi_system_id *dmi)
{
quirks = dmi->driver_data;
return 1;
}
static struct quirk_entry quirk_dell_xps13_9333 = {
.needs_kbd_timeouts = true,
.kbd_timeouts = { 0, 5, 15, 60, 5 * 60, 15 * 60, -1 },
};
static struct quirk_entry quirk_dell_xps13_9370 = {
.kbd_missing_ac_tag = true,
};
static struct quirk_entry quirk_dell_latitude_e6410 = {
.kbd_led_levels_off_1 = true,
};
static struct quirk_entry quirk_dell_inspiron_1012 = {
.kbd_led_not_present = true,
};
static struct quirk_entry quirk_dell_latitude_7520 = {
.kbd_missing_ac_tag = true,
};
static struct platform_driver platform_driver = {
.driver = {
.name = "dell-laptop",
}
};
static struct platform_device *platform_device;
static struct backlight_device *dell_backlight_device;
static struct rfkill *wifi_rfkill;
static struct rfkill *bluetooth_rfkill;
static struct rfkill *wwan_rfkill;
static bool force_rfkill;
static bool micmute_led_registered;
static bool mute_led_registered;
struct battery_mode_info {
int token;
enum power_supply_charge_type charge_type;
};
static const struct battery_mode_info battery_modes[] = {
{ BAT_PRI_AC_MODE_TOKEN, POWER_SUPPLY_CHARGE_TYPE_TRICKLE },
{ BAT_EXPRESS_MODE_TOKEN, POWER_SUPPLY_CHARGE_TYPE_FAST },
{ BAT_STANDARD_MODE_TOKEN, POWER_SUPPLY_CHARGE_TYPE_STANDARD },
{ BAT_ADAPTIVE_MODE_TOKEN, POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE },
{ BAT_CUSTOM_MODE_TOKEN, POWER_SUPPLY_CHARGE_TYPE_CUSTOM },
};
static u32 battery_supported_modes;
module_param(force_rfkill, bool, 0444);
MODULE_PARM_DESC(force_rfkill, "enable rfkill on non whitelisted models");
static const struct dmi_system_id dell_device_table[] __initconst = {
{
.ident = "Dell laptop",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "9"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "10"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "30"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "31"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "32"),
},
},
{
.ident = "Dell Computer Corporation",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
},
},
{ }
};
MODULE_DEVICE_TABLE(dmi, dell_device_table);
static const struct dmi_system_id dell_quirks[] __initconst = {
{
.callback = dmi_matched,
.ident = "Dell Vostro V130",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V130"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro V131",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3350",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3350"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3555",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3555"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron N311z",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron N311z"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron M5110",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron M5110"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3360",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3460",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3460"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3560",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 3560"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Vostro 3450",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Dell System Vostro 3450"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 5420",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5420"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 5520",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5520"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 5720",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5720"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 7420",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7420"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 7520",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7520"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 7720",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"),
},
.driver_data = &quirk_dell_vostro_v130,
},
{
.callback = dmi_matched,
.ident = "Dell XPS13 9333",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS13 9333"),
},
.driver_data = &quirk_dell_xps13_9333,
},
{
.callback = dmi_matched,
.ident = "Dell XPS 13 9370",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9370"),
},
.driver_data = &quirk_dell_xps13_9370,
},
{
.callback = dmi_matched,
.ident = "Dell Latitude E6410",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6410"),
},
.driver_data = &quirk_dell_latitude_e6410,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 1012",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
},
.driver_data = &quirk_dell_inspiron_1012,
},
{
.callback = dmi_matched,
.ident = "Dell Inspiron 1018",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1018"),
},
.driver_data = &quirk_dell_inspiron_1012,
},
{
.callback = dmi_matched,
.ident = "Dell Latitude 7520",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 7520"),
},
.driver_data = &quirk_dell_latitude_7520,
},
{ }
};
#define USE_TVAL ((u32) -1)
static int dell_send_request_for_tokenid(struct calling_interface_buffer *buffer,
u16 class, u16 select, u16 tokenid,
u32 val)
{
struct calling_interface_token *token;
token = dell_smbios_find_token(tokenid);
if (!token)
return -ENODEV;
if (val == USE_TVAL)
val = token->value;
dell_fill_request(buffer, token->location, val, 0, 0);
return dell_send_request(buffer, class, select);
}
static inline int dell_set_std_token_value(struct calling_interface_buffer *buffer,
u16 tokenid, u32 value)
{
return dell_send_request_for_tokenid(buffer, CLASS_TOKEN_WRITE,
SELECT_TOKEN_STD, tokenid, value);
}
static int dell_rfkill_set(void *data, bool blocked)
{
int disable = blocked ? 1 : 0;
unsigned long radio = (unsigned long)data;
int hwswitch_bit = (unsigned long)data - 1;
struct calling_interface_buffer buffer;
int hwswitch;
int status;
int ret;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
if (ret)
return ret;
status = buffer.output[1];
dell_fill_request(&buffer, 0x2, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
if (ret)
return ret;
hwswitch = buffer.output[1];
if (ret == 0 && (hwswitch & BIT(hwswitch_bit)) &&
(status & BIT(0)) && !(status & BIT(16)))
disable = 1;
dell_fill_request(&buffer, 1 | (radio<<8) | (disable << 16), 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
return ret;
}
static void dell_rfkill_update_sw_state(struct rfkill *rfkill, int radio,
int status)
{
if (status & BIT(0)) {
struct calling_interface_buffer buffer;
int block = rfkill_blocked(rfkill);
dell_fill_request(&buffer,
1 | (radio << 8) | (block << 16), 0, 0, 0);
dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
} else {
rfkill_set_sw_state(rfkill, !!(status & BIT(radio + 16)));
}
}
static void dell_rfkill_update_hw_state(struct rfkill *rfkill, int radio,
int status, int hwswitch)
{
if (hwswitch & (BIT(radio - 1)))
rfkill_set_hw_state(rfkill, !(status & BIT(16)));
}
static void dell_rfkill_query(struct rfkill *rfkill, void *data)
{
int radio = ((unsigned long)data & 0xF);
struct calling_interface_buffer buffer;
int hwswitch;
int status;
int ret;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
status = buffer.output[1];
if (ret != 0 || !(status & BIT(0))) {
return;
}
dell_fill_request(&buffer, 0x2, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
hwswitch = buffer.output[1];
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;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
if (ret)
return ret;
status = buffer.output[1];
dell_fill_request(&buffer, 0x2, 0, 0, 0);
hwswitch_ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
if (hwswitch_ret)
return hwswitch_ret;
hwswitch_state = buffer.output[1];
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;
}
DEFINE_SHOW_ATTRIBUTE(dell_debugfs);
static void dell_update_rfkill(struct work_struct *ignored)
{
struct calling_interface_buffer buffer;
int hwswitch = 0;
int status;
int ret;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
status = buffer.output[1];
if (ret != 0)
return;
dell_fill_request(&buffer, 0x2, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
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);
}
if (bluetooth_rfkill) {
dell_rfkill_update_hw_state(bluetooth_rfkill, 2, status,
hwswitch);
dell_rfkill_update_sw_state(bluetooth_rfkill, 2, status);
}
if (wwan_rfkill) {
dell_rfkill_update_hw_state(wwan_rfkill, 3, status, hwswitch);
dell_rfkill_update_sw_state(wwan_rfkill, 3, status);
}
}
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,
void *context)
{
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;
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;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_INFO, SELECT_RFKILL);
status = buffer.output[1];
if (ret != 0)
return 0;
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_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, NULL);
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;
u16 select;
select = power_supply_is_system_supplied() > 0 ?
SELECT_TOKEN_AC : SELECT_TOKEN_BAT;
return dell_send_request_for_tokenid(&buffer, CLASS_TOKEN_WRITE,
select, BRIGHTNESS_TOKEN, bd->props.brightness);
}
static int dell_get_intensity(struct backlight_device *bd)
{
struct calling_interface_buffer buffer;
int ret;
u16 select;
select = power_supply_is_system_supplied() > 0 ?
SELECT_TOKEN_AC : SELECT_TOKEN_BAT;
ret = dell_send_request_for_tokenid(&buffer, CLASS_TOKEN_READ,
select, BRIGHTNESS_TOKEN, 0);
if (ret == 0)
ret = buffer.output[1];
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);
}
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 timeout_value_ac;
u8 timeout_unit_ac;
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 bool kbd_timeout_ac_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;
static DEFINE_MUTEX(kbd_led_mutex);
static enum led_brightness kbd_led_level;
static int kbd_get_info(struct kbd_info *info)
{
struct calling_interface_buffer buffer;
u8 units;
int ret;
dell_fill_request(&buffer, 0, 0, 0, 0);
ret = dell_send_request(&buffer,
CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
if (ret)
return ret;
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 (quirks && quirks->kbd_led_levels_off_1 && info->levels)
info->levels--;
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;
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;
dell_fill_request(&buffer, 0x1, 0, 0, 0);
ret = dell_send_request(&buffer,
CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
if (ret)
return ret;
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;
state->timeout_value_ac = (buffer.output[2] >> 24) & 0x3F;
state->timeout_unit_ac = (buffer.output[2] >> 30) & 0x3;
return ret;
}
static int kbd_set_state(struct kbd_state *state)
{
struct calling_interface_buffer buffer;
int ret;
u32 input1;
u32 input2;
input1 = BIT(state->mode_bit) & 0xFFFF;
input1 |= (state->triggers & 0xFF) << 16;
input1 |= (state->timeout_value & 0x3F) << 24;
input1 |= (state->timeout_unit & 0x3) << 30;
input2 = state->als_setting & 0xFF;
input2 |= (state->level & 0xFF) << 16;
input2 |= (state->timeout_value_ac & 0x3F) << 24;
input2 |= (state->timeout_unit_ac & 0x3) << 30;
dell_fill_request(&buffer, 0x2, input1, input2, 0);
ret = dell_send_request(&buffer,
CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
return 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;
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;
if (bit >= ARRAY_SIZE(kbd_tokens))
return -EINVAL;
return dell_set_std_token_value(&buffer, kbd_tokens[bit], USE_TVAL);
}
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;
dell_fill_request(&buffer, token->location, 0, 0, 0);
ret = dell_send_request(&buffer, CLASS_TOKEN_READ, SELECT_TOKEN_STD);
if (ret)
return ret;
val = buffer.output[1];
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;
if ((quirks && quirks->kbd_missing_ac_tag) ||
dell_smbios_find_token(KBD_LED_AC_TOKEN))
kbd_timeout_ac_supported = true;
kbd_get_state(&state);
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;
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;
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;
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 __init 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 __init kbd_init(void)
{
int ret;
if (quirks && quirks->kbd_led_not_present)
return;
ret = kbd_init_info();
kbd_init_tokens();
if ((ret == 0 && (kbd_info.levels != 0 || kbd_mode_levels_count >= 2))
|| kbd_get_valid_token_counts() >= 2)
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) {
switch (unit) {
case KBD_TIMEOUT_DAYS:
value *= 24;
fallthrough;
case KBD_TIMEOUT_HOURS:
value *= 60;
fallthrough;
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;
}
}
mutex_lock(&kbd_led_mutex);
ret = kbd_get_state(&state);
if (ret)
goto out;
new_state = state;
if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) {
new_state.timeout_value_ac = value;
new_state.timeout_unit_ac = unit;
} else {
new_state.timeout_value = value;
new_state.timeout_unit = unit;
}
ret = kbd_set_state_safe(&new_state, &state);
if (ret)
goto out;
ret = count;
out:
mutex_unlock(&kbd_led_mutex);
return ret;
}
static ssize_t kbd_led_timeout_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct kbd_state state;
int value;
int ret;
int len;
u8 unit;
ret = kbd_get_state(&state);
if (ret)
return ret;
if (kbd_timeout_ac_supported && power_supply_is_system_supplied() > 0) {
value = state.timeout_value_ac;
unit = state.timeout_unit_ac;
} else {
value = state.timeout_value;
unit = state.timeout_unit;
}
len = sprintf(buf, "%d", value);
switch (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",
NULL,
"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;
mutex_lock(&kbd_led_mutex);
ret = kbd_get_state(&state);
if (ret)
goto out;
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))) {
ret = count;
goto out;
}
if (trigger[0] == '-' &&
(!triggers_enabled || !(state.triggers & BIT(i)))) {
ret = count;
goto out;
}
trigger_bit = i;
break;
}
}
if (trigger_bit == -1) {
ret = -EINVAL;
goto out;
}
new_state = state;
if (trigger[0] == '+')
new_state.triggers |= BIT(trigger_bit);
else {
new_state.triggers &= ~BIT(trigger_bit);
if (trigger_bit == 1)
new_state.triggers &= ~BIT(2);
}
if ((kbd_info.triggers & new_state.triggers) !=
new_state.triggers) {
ret = -EINVAL;
goto out;
}
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))) {
ret = -EINVAL;
goto out;
}
ret = kbd_set_state_safe(&new_state, &state);
if (ret)
goto out;
if (new_state.mode_bit != KBD_MODE_BIT_OFF)
kbd_previous_mode_bit = new_state.mode_bit;
ret = count;
out:
mutex_unlock(&kbd_led_mutex);
return ret;
}
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;
mutex_lock(&kbd_led_mutex);
ret = kbd_get_state(&state);
if (ret)
goto out;
if (enable == kbd_is_als_mode_bit(state.mode_bit)) {
ret = count;
goto out;
}
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))) {
ret = -EINVAL;
goto out;
}
ret = kbd_set_state_safe(&new_state, &state);
if (ret)
goto out;
kbd_previous_mode_bit = new_state.mode_bit;
ret = count;
out:
mutex_unlock(&kbd_led_mutex);
return ret;
}
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;
mutex_lock(&kbd_led_mutex);
ret = kbd_get_state(&state);
if (ret)
goto out;
new_state = state;
new_state.als_setting = setting;
ret = kbd_set_state_safe(&new_state, &state);
if (ret)
goto out;
ret = count;
out:
mutex_unlock(&kbd_led_mutex);
return ret;
}
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;
if (num == 0)
return 0;
return ffs(num) - 1;
}
pr_warn("Keyboard brightness level control not supported\n");
return 0;
}
static int kbd_led_level_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
enum led_brightness new_value = value;
struct kbd_state state;
struct kbd_state new_state;
u16 num;
int ret;
mutex_lock(&kbd_led_mutex);
if (kbd_get_max_level()) {
ret = kbd_get_state(&state);
if (ret)
goto out;
new_state = state;
ret = kbd_set_level(&new_state, value);
if (ret)
goto out;
ret = kbd_set_state_safe(&new_state, &state);
} else if (kbd_get_valid_token_counts()) {
for (num = kbd_token_bits; num != 0 && value > 0; --value)
num &= num - 1;
if (num == 0)
ret = 0;
else
ret = kbd_set_token_bit(ffs(num) - 1);
} else {
pr_warn("Keyboard brightness level control not supported\n");
ret = -ENXIO;
}
out:
if (ret == 0)
kbd_led_level = new_value;
mutex_unlock(&kbd_led_mutex);
return ret;
}
static struct led_classdev kbd_led = {
.name = "dell::kbd_backlight",
.flags = LED_BRIGHT_HW_CHANGED,
.brightness_set_blocking = kbd_led_level_set,
.brightness_get = kbd_led_level_get,
.groups = kbd_led_groups,
};
static int __init kbd_led_init(struct device *dev)
{
int ret;
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--;
}
kbd_led_level = kbd_led_level_get(NULL);
ret = led_classdev_register(dev, &kbd_led);
if (ret)
kbd_led_present = false;
return ret;
}
static void brightness_set_exit(struct led_classdev *led_cdev,
enum led_brightness value)
{
};
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 dell_laptop_notifier_call(struct notifier_block *nb,
unsigned long action, void *data)
{
bool changed = false;
enum led_brightness new_kbd_led_level;
switch (action) {
case DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED:
if (!kbd_led_present)
break;
mutex_lock(&kbd_led_mutex);
new_kbd_led_level = kbd_led_level_get(&kbd_led);
if (kbd_led_level != new_kbd_led_level) {
kbd_led_level = new_kbd_led_level;
changed = true;
}
mutex_unlock(&kbd_led_mutex);
if (changed)
led_classdev_notify_brightness_hw_changed(&kbd_led,
kbd_led_level);
break;
}
return NOTIFY_OK;
}
static struct notifier_block dell_laptop_notifier = {
.notifier_call = dell_laptop_notifier_call,
};
static int micmute_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct calling_interface_buffer buffer;
u32 tokenid;
tokenid = brightness == LED_OFF ?
GLOBAL_MIC_MUTE_DISABLE : GLOBAL_MIC_MUTE_ENABLE;
return dell_set_std_token_value(&buffer, tokenid, USE_TVAL);
}
static struct led_classdev micmute_led_cdev = {
.name = "platform::micmute",
.max_brightness = 1,
.brightness_set_blocking = micmute_led_set,
.default_trigger = "audio-micmute",
};
static int mute_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct calling_interface_buffer buffer;
u32 tokenid;
tokenid = brightness == LED_OFF ?
GLOBAL_MUTE_DISABLE : GLOBAL_MUTE_ENABLE;
return dell_set_std_token_value(&buffer, tokenid, USE_TVAL);
}
static struct led_classdev mute_led_cdev = {
.name = "platform::mute",
.max_brightness = 1,
.brightness_set_blocking = mute_led_set,
.default_trigger = "audio-mute",
};
static int dell_battery_set_mode(const u16 tokenid)
{
struct calling_interface_buffer buffer;
return dell_set_std_token_value(&buffer, tokenid, USE_TVAL);
}
static int dell_battery_read(const u16 tokenid)
{
struct calling_interface_buffer buffer;
int err;
err = dell_send_request_for_tokenid(&buffer, CLASS_TOKEN_READ,
SELECT_TOKEN_STD, tokenid, 0);
if (err)
return err;
if (buffer.output[1] > INT_MAX)
return -EIO;
return buffer.output[1];
}
static bool dell_battery_mode_is_active(const u16 tokenid)
{
struct calling_interface_token *token;
int ret;
ret = dell_battery_read(tokenid);
if (ret < 0)
return false;
token = dell_smbios_find_token(tokenid);
return token->value == (u16) ret;
}
#define CHARGE_START_MIN 50
#define CHARGE_START_MAX 95
#define CHARGE_END_MIN 55
#define CHARGE_END_MAX 100
#define CHARGE_MIN_DIFF 5
static int dell_battery_set_custom_charge_start(int start)
{
struct calling_interface_buffer buffer;
int end;
start = clamp(start, CHARGE_START_MIN, CHARGE_START_MAX);
end = dell_battery_read(BAT_CUSTOM_CHARGE_END);
if (end < 0)
return end;
if ((end - start) < CHARGE_MIN_DIFF)
start = end - CHARGE_MIN_DIFF;
return dell_set_std_token_value(&buffer, BAT_CUSTOM_CHARGE_START,
start);
}
static int dell_battery_set_custom_charge_end(int end)
{
struct calling_interface_buffer buffer;
int start;
end = clamp(end, CHARGE_END_MIN, CHARGE_END_MAX);
start = dell_battery_read(BAT_CUSTOM_CHARGE_START);
if (start < 0)
return start;
if ((end - start) < CHARGE_MIN_DIFF)
end = start + CHARGE_MIN_DIFF;
return dell_set_std_token_value(&buffer, BAT_CUSTOM_CHARGE_END, end);
}
static ssize_t charge_types_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
enum power_supply_charge_type charge_type;
int i;
for (i = 0; i < ARRAY_SIZE(battery_modes); i++) {
charge_type = battery_modes[i].charge_type;
if (!(battery_supported_modes & BIT(charge_type)))
continue;
if (!dell_battery_mode_is_active(battery_modes[i].token))
continue;
return power_supply_charge_types_show(dev, battery_supported_modes,
charge_type, buf);
}
return -EIO;
}
static ssize_t charge_types_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
int charge_type, err, i;
charge_type = power_supply_charge_types_parse(battery_supported_modes, buf);
if (charge_type < 0)
return charge_type;
for (i = 0; i < ARRAY_SIZE(battery_modes); i++) {
if (battery_modes[i].charge_type == charge_type)
break;
}
if (i == ARRAY_SIZE(battery_modes))
return -ENOENT;
err = dell_battery_set_mode(battery_modes[i].token);
if (err)
return err;
return size;
}
static ssize_t charge_control_start_threshold_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int start;
start = dell_battery_read(BAT_CUSTOM_CHARGE_START);
if (start < 0)
return start;
if (start > CHARGE_START_MAX)
return -EIO;
return sysfs_emit(buf, "%d\n", start);
}
static ssize_t charge_control_start_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
int ret, start;
ret = kstrtoint(buf, 10, &start);
if (ret)
return ret;
if (start < 0 || start > 100)
return -EINVAL;
ret = dell_battery_set_custom_charge_start(start);
if (ret)
return ret;
return size;
}
static ssize_t charge_control_end_threshold_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
int end;
end = dell_battery_read(BAT_CUSTOM_CHARGE_END);
if (end < 0)
return end;
if (end > CHARGE_END_MAX)
return -EIO;
return sysfs_emit(buf, "%d\n", end);
}
static ssize_t charge_control_end_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
int ret, end;
ret = kstrtouint(buf, 10, &end);
if (ret)
return ret;
if (end < 0 || end > 100)
return -EINVAL;
ret = dell_battery_set_custom_charge_end(end);
if (ret)
return ret;
return size;
}
static DEVICE_ATTR_RW(charge_control_start_threshold);
static DEVICE_ATTR_RW(charge_control_end_threshold);
static DEVICE_ATTR_RW(charge_types);
static struct attribute *dell_battery_attrs[] = {
&dev_attr_charge_control_start_threshold.attr,
&dev_attr_charge_control_end_threshold.attr,
&dev_attr_charge_types.attr,
NULL,
};
ATTRIBUTE_GROUPS(dell_battery);
static bool dell_battery_supported(struct power_supply *battery)
{
return strcmp(battery->desc->name, "BAT0") == 0;
}
static int dell_battery_add(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
if (!dell_battery_supported(battery))
return 0;
return device_add_groups(&battery->dev, dell_battery_groups);
}
static int dell_battery_remove(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
if (!dell_battery_supported(battery))
return 0;
device_remove_groups(&battery->dev, dell_battery_groups);
return 0;
}
static struct acpi_battery_hook dell_battery_hook = {
.add_battery = dell_battery_add,
.remove_battery = dell_battery_remove,
.name = "Dell Primary Battery Extension",
};
static u32 __init battery_get_supported_modes(void)
{
u32 modes = 0;
int i;
for (i = 0; i < ARRAY_SIZE(battery_modes); i++) {
if (dell_smbios_find_token(battery_modes[i].token))
modes |= BIT(battery_modes[i].charge_type);
}
return modes;
}
static void __init dell_battery_init(struct device *dev)
{
battery_supported_modes = battery_get_supported_modes();
if (battery_supported_modes != 0)
battery_hook_register(&dell_battery_hook);
}
static void dell_battery_exit(void)
{
if (battery_supported_modes != 0)
battery_hook_unregister(&dell_battery_hook);
}
static int __init dell_init(void)
{
struct calling_interface_buffer buffer;
int max_intensity = 0;
int ret;
if (!dmi_check_system(dell_device_table))
return -ENODEV;
quirks = NULL;
dmi_check_system(dell_quirks);
ret = platform_driver_register(&platform_driver);
if (ret)
goto fail_platform_driver;
platform_device = platform_device_alloc("dell-laptop", PLATFORM_DEVID_NONE);
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_battery_init(&platform_device->dev);
dell_laptop_dir = debugfs_create_dir("dell_laptop", NULL);
debugfs_create_file("rfkill", 0444, dell_laptop_dir, NULL,
&dell_debugfs_fops);
dell_laptop_register_notifier(&dell_laptop_notifier);
if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) &&
dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE) &&
!dell_privacy_has_mic_mute()) {
ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev);
if (ret < 0)
goto fail_led;
micmute_led_registered = true;
}
if (dell_smbios_find_token(GLOBAL_MUTE_DISABLE) &&
dell_smbios_find_token(GLOBAL_MUTE_ENABLE)) {
ret = led_classdev_register(&platform_device->dev, &mute_led_cdev);
if (ret < 0)
goto fail_backlight;
mute_led_registered = true;
}
if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
return 0;
ret = dell_send_request_for_tokenid(&buffer, CLASS_TOKEN_READ,
SELECT_TOKEN_AC, BRIGHTNESS_TOKEN, 0);
if (ret == 0)
max_intensity = buffer.output[3];
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);
if (dell_backlight_device->props.brightness < 0) {
ret = dell_backlight_device->props.brightness;
goto fail_get_brightness;
}
backlight_update_status(dell_backlight_device);
}
return 0;
fail_get_brightness:
backlight_device_unregister(dell_backlight_device);
fail_backlight:
if (micmute_led_registered)
led_classdev_unregister(&micmute_led_cdev);
if (mute_led_registered)
led_classdev_unregister(&mute_led_cdev);
fail_led:
dell_battery_exit();
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)
{
dell_laptop_unregister_notifier(&dell_laptop_notifier);
debugfs_remove_recursive(dell_laptop_dir);
if (quirks && quirks->touchpad_led)
touchpad_led_exit();
kbd_led_exit();
dell_battery_exit();
backlight_device_unregister(dell_backlight_device);
if (micmute_led_registered)
led_classdev_unregister(&micmute_led_cdev);
if (mute_led_registered)
led_classdev_unregister(&mute_led_cdev);
dell_cleanup_rfkill();
if (platform_device) {
platform_device_unregister(platform_device);
platform_driver_unregister(&platform_driver);
}
}
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@kernel.org>");
MODULE_DESCRIPTION("Dell laptop driver");
MODULE_LICENSE("GPL");
