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linux-zen-server/drivers/platform/x86/ideapad-laptop.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ideapad-laptop.c - Lenovo IdeaPad ACPI Extras
*
* Copyright © 2010 Intel Corporation
* Copyright © 2010 David Woodhouse <dwmw2@infradead.org>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/acpi.h>
#include <linux/backlight.h>
#include <linux/bitops.h>
#include <linux/bug.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/fb.h>
#include <linux/i8042.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/platform_profile.h>
#include <linux/rfkill.h>
#include <linux/seq_file.h>
#include <linux/sysfs.h>
#include <linux/types.h>
#include <linux/wmi.h>
#include <acpi/video.h>
#include <dt-bindings/leds/common.h>
#define IDEAPAD_RFKILL_DEV_NUM 3
enum {
CFG_CAP_BT_BIT = 16,
CFG_CAP_3G_BIT = 17,
CFG_CAP_WIFI_BIT = 18,
CFG_CAP_CAM_BIT = 19,
/*
* These are OnScreenDisplay support bits that can be useful to determine
* whether a hotkey exists/should show OSD. But they aren't particularly
* meaningful since they were introduced later, i.e. 2010 IdeaPads
* don't have these, but they still have had OSD for hotkeys.
*/
CFG_OSD_NUMLK_BIT = 27,
CFG_OSD_CAPSLK_BIT = 28,
CFG_OSD_MICMUTE_BIT = 29,
CFG_OSD_TOUCHPAD_BIT = 30,
CFG_OSD_CAM_BIT = 31,
};
enum {
GBMD_CONSERVATION_STATE_BIT = 5,
};
enum {
SBMC_CONSERVATION_ON = 3,
SBMC_CONSERVATION_OFF = 5,
};
enum {
HALS_KBD_BL_SUPPORT_BIT = 4,
HALS_KBD_BL_STATE_BIT = 5,
HALS_USB_CHARGING_SUPPORT_BIT = 6,
HALS_USB_CHARGING_STATE_BIT = 7,
HALS_FNLOCK_SUPPORT_BIT = 9,
HALS_FNLOCK_STATE_BIT = 10,
HALS_HOTKEYS_PRIMARY_BIT = 11,
};
enum {
SALS_KBD_BL_ON = 0x8,
SALS_KBD_BL_OFF = 0x9,
SALS_USB_CHARGING_ON = 0xa,
SALS_USB_CHARGING_OFF = 0xb,
SALS_FNLOCK_ON = 0xe,
SALS_FNLOCK_OFF = 0xf,
};
enum {
VPCCMD_R_VPC1 = 0x10,
VPCCMD_R_BL_MAX,
VPCCMD_R_BL,
VPCCMD_W_BL,
VPCCMD_R_WIFI,
VPCCMD_W_WIFI,
VPCCMD_R_BT,
VPCCMD_W_BT,
VPCCMD_R_BL_POWER,
VPCCMD_R_NOVO,
VPCCMD_R_VPC2,
VPCCMD_R_TOUCHPAD,
VPCCMD_W_TOUCHPAD,
VPCCMD_R_CAMERA,
VPCCMD_W_CAMERA,
VPCCMD_R_3G,
VPCCMD_W_3G,
VPCCMD_R_ODD, /* 0x21 */
VPCCMD_W_FAN,
VPCCMD_R_RF,
VPCCMD_W_RF,
VPCCMD_R_FAN = 0x2B,
VPCCMD_R_SPECIAL_BUTTONS = 0x31,
VPCCMD_W_BL_POWER = 0x33,
};
struct ideapad_dytc_priv {
enum platform_profile_option current_profile;
struct platform_profile_handler pprof;
struct mutex mutex; /* protects the DYTC interface */
struct ideapad_private *priv;
};
struct ideapad_rfk_priv {
int dev;
struct ideapad_private *priv;
};
struct ideapad_private {
struct acpi_device *adev;
struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM];
struct ideapad_rfk_priv rfk_priv[IDEAPAD_RFKILL_DEV_NUM];
struct platform_device *platform_device;
struct input_dev *inputdev;
struct backlight_device *blightdev;
struct ideapad_dytc_priv *dytc;
struct dentry *debug;
unsigned long cfg;
unsigned long r_touchpad_val;
struct {
bool conservation_mode : 1;
bool dytc : 1;
bool fan_mode : 1;
bool fn_lock : 1;
bool set_fn_lock_led : 1;
bool hw_rfkill_switch : 1;
bool kbd_bl : 1;
bool touchpad_ctrl_via_ec : 1;
bool ctrl_ps2_aux_port : 1;
bool usb_charging : 1;
} features;
struct {
bool initialized;
struct led_classdev led;
unsigned int last_brightness;
} kbd_bl;
};
static bool no_bt_rfkill;
module_param(no_bt_rfkill, bool, 0444);
MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
static bool allow_v4_dytc;
module_param(allow_v4_dytc, bool, 0444);
MODULE_PARM_DESC(allow_v4_dytc,
"Enable DYTC version 4 platform-profile support. "
"If you need this please report this to: platform-driver-x86@vger.kernel.org");
static bool hw_rfkill_switch;
module_param(hw_rfkill_switch, bool, 0444);
MODULE_PARM_DESC(hw_rfkill_switch,
"Enable rfkill support for laptops with a hw on/off wifi switch/slider. "
"If you need this please report this to: platform-driver-x86@vger.kernel.org");
static bool set_fn_lock_led;
module_param(set_fn_lock_led, bool, 0444);
MODULE_PARM_DESC(set_fn_lock_led,
"Enable driver based updates of the fn-lock LED on fn-lock changes. "
"If you need this please report this to: platform-driver-x86@vger.kernel.org");
static bool ctrl_ps2_aux_port;
module_param(ctrl_ps2_aux_port, bool, 0444);
MODULE_PARM_DESC(ctrl_ps2_aux_port,
"Enable driver based PS/2 aux port en-/dis-abling on touchpad on/off toggle. "
"If you need this please report this to: platform-driver-x86@vger.kernel.org");
static bool touchpad_ctrl_via_ec;
module_param(touchpad_ctrl_via_ec, bool, 0444);
MODULE_PARM_DESC(touchpad_ctrl_via_ec,
"Enable registering a 'touchpad' sysfs-attribute which can be used to manually "
"tell the EC to enable/disable the touchpad. This may not work on all models.");
/*
* shared data
*/
static struct ideapad_private *ideapad_shared;
static DEFINE_MUTEX(ideapad_shared_mutex);
static int ideapad_shared_init(struct ideapad_private *priv)
{
int ret;
mutex_lock(&ideapad_shared_mutex);
if (!ideapad_shared) {
ideapad_shared = priv;
ret = 0;
} else {
dev_warn(&priv->adev->dev, "found multiple platform devices\n");
ret = -EINVAL;
}
mutex_unlock(&ideapad_shared_mutex);
return ret;
}
static void ideapad_shared_exit(struct ideapad_private *priv)
{
mutex_lock(&ideapad_shared_mutex);
if (ideapad_shared == priv)
ideapad_shared = NULL;
mutex_unlock(&ideapad_shared_mutex);
}
/*
* ACPI Helpers
*/
#define IDEAPAD_EC_TIMEOUT 200 /* in ms */
static int eval_int(acpi_handle handle, const char *name, unsigned long *res)
{
unsigned long long result;
acpi_status status;
status = acpi_evaluate_integer(handle, (char *)name, NULL, &result);
if (ACPI_FAILURE(status))
return -EIO;
*res = result;
return 0;
}
static int exec_simple_method(acpi_handle handle, const char *name, unsigned long arg)
{
acpi_status status = acpi_execute_simple_method(handle, (char *)name, arg);
return ACPI_FAILURE(status) ? -EIO : 0;
}
static int eval_gbmd(acpi_handle handle, unsigned long *res)
{
return eval_int(handle, "GBMD", res);
}
static int exec_sbmc(acpi_handle handle, unsigned long arg)
{
return exec_simple_method(handle, "SBMC", arg);
}
static int eval_hals(acpi_handle handle, unsigned long *res)
{
return eval_int(handle, "HALS", res);
}
static int exec_sals(acpi_handle handle, unsigned long arg)
{
return exec_simple_method(handle, "SALS", arg);
}
static int eval_int_with_arg(acpi_handle handle, const char *name, unsigned long arg, unsigned long *res)
{
struct acpi_object_list params;
unsigned long long result;
union acpi_object in_obj;
acpi_status status;
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
in_obj.integer.value = arg;
status = acpi_evaluate_integer(handle, (char *)name, &params, &result);
if (ACPI_FAILURE(status))
return -EIO;
if (res)
*res = result;
return 0;
}
static int eval_dytc(acpi_handle handle, unsigned long cmd, unsigned long *res)
{
return eval_int_with_arg(handle, "DYTC", cmd, res);
}
static int eval_vpcr(acpi_handle handle, unsigned long cmd, unsigned long *res)
{
return eval_int_with_arg(handle, "VPCR", cmd, res);
}
static int eval_vpcw(acpi_handle handle, unsigned long cmd, unsigned long data)
{
struct acpi_object_list params;
union acpi_object in_obj[2];
acpi_status status;
params.count = 2;
params.pointer = in_obj;
in_obj[0].type = ACPI_TYPE_INTEGER;
in_obj[0].integer.value = cmd;
in_obj[1].type = ACPI_TYPE_INTEGER;
in_obj[1].integer.value = data;
status = acpi_evaluate_object(handle, "VPCW", &params, NULL);
if (ACPI_FAILURE(status))
return -EIO;
return 0;
}
static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *data)
{
unsigned long end_jiffies, val;
int err;
err = eval_vpcw(handle, 1, cmd);
if (err)
return err;
end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
while (time_before(jiffies, end_jiffies)) {
schedule();
err = eval_vpcr(handle, 1, &val);
if (err)
return err;
if (val == 0)
return eval_vpcr(handle, 0, data);
}
acpi_handle_err(handle, "timeout in %s\n", __func__);
return -ETIMEDOUT;
}
static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long data)
{
unsigned long end_jiffies, val;
int err;
err = eval_vpcw(handle, 0, data);
if (err)
return err;
err = eval_vpcw(handle, 1, cmd);
if (err)
return err;
end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
while (time_before(jiffies, end_jiffies)) {
schedule();
err = eval_vpcr(handle, 1, &val);
if (err)
return err;
if (val == 0)
return 0;
}
acpi_handle_err(handle, "timeout in %s\n", __func__);
return -ETIMEDOUT;
}
/*
* debugfs
*/
static int debugfs_status_show(struct seq_file *s, void *data)
{
struct ideapad_private *priv = s->private;
unsigned long value;
if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
seq_printf(s, "Backlight max: %lu\n", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
seq_printf(s, "Backlight now: %lu\n", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &value))
seq_printf(s, "BL power value: %s (%lu)\n", value ? "on" : "off", value);
seq_puts(s, "=====================\n");
if (!read_ec_data(priv->adev->handle, VPCCMD_R_RF, &value))
seq_printf(s, "Radio status: %s (%lu)\n", value ? "on" : "off", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_WIFI, &value))
seq_printf(s, "Wifi status: %s (%lu)\n", value ? "on" : "off", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_BT, &value))
seq_printf(s, "BT status: %s (%lu)\n", value ? "on" : "off", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_3G, &value))
seq_printf(s, "3G status: %s (%lu)\n", value ? "on" : "off", value);
seq_puts(s, "=====================\n");
if (!read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value))
seq_printf(s, "Touchpad status: %s (%lu)\n", value ? "on" : "off", value);
if (!read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &value))
seq_printf(s, "Camera status: %s (%lu)\n", value ? "on" : "off", value);
seq_puts(s, "=====================\n");
if (!eval_gbmd(priv->adev->handle, &value))
seq_printf(s, "GBMD: %#010lx\n", value);
if (!eval_hals(priv->adev->handle, &value))
seq_printf(s, "HALS: %#010lx\n", value);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_status);
static int debugfs_cfg_show(struct seq_file *s, void *data)
{
struct ideapad_private *priv = s->private;
seq_printf(s, "_CFG: %#010lx\n\n", priv->cfg);
seq_puts(s, "Capabilities:");
if (test_bit(CFG_CAP_BT_BIT, &priv->cfg))
seq_puts(s, " bluetooth");
if (test_bit(CFG_CAP_3G_BIT, &priv->cfg))
seq_puts(s, " 3G");
if (test_bit(CFG_CAP_WIFI_BIT, &priv->cfg))
seq_puts(s, " wifi");
if (test_bit(CFG_CAP_CAM_BIT, &priv->cfg))
seq_puts(s, " camera");
seq_puts(s, "\n");
seq_puts(s, "OSD support:");
if (test_bit(CFG_OSD_NUMLK_BIT, &priv->cfg))
seq_puts(s, " num-lock");
if (test_bit(CFG_OSD_CAPSLK_BIT, &priv->cfg))
seq_puts(s, " caps-lock");
if (test_bit(CFG_OSD_MICMUTE_BIT, &priv->cfg))
seq_puts(s, " mic-mute");
if (test_bit(CFG_OSD_TOUCHPAD_BIT, &priv->cfg))
seq_puts(s, " touchpad");
if (test_bit(CFG_OSD_CAM_BIT, &priv->cfg))
seq_puts(s, " camera");
seq_puts(s, "\n");
seq_puts(s, "Graphics: ");
switch (priv->cfg & 0x700) {
case 0x100:
seq_puts(s, "Intel");
break;
case 0x200:
seq_puts(s, "ATI");
break;
case 0x300:
seq_puts(s, "Nvidia");
break;
case 0x400:
seq_puts(s, "Intel and ATI");
break;
case 0x500:
seq_puts(s, "Intel and Nvidia");
break;
}
seq_puts(s, "\n");
return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
static void ideapad_debugfs_init(struct ideapad_private *priv)
{
struct dentry *dir;
dir = debugfs_create_dir("ideapad", NULL);
priv->debug = dir;
debugfs_create_file("cfg", 0444, dir, priv, &debugfs_cfg_fops);
debugfs_create_file("status", 0444, dir, priv, &debugfs_status_fops);
}
static void ideapad_debugfs_exit(struct ideapad_private *priv)
{
debugfs_remove_recursive(priv->debug);
priv->debug = NULL;
}
/*
* sysfs
*/
static ssize_t camera_power_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long result;
int err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_CAMERA, &result);
if (err)
return err;
return sysfs_emit(buf, "%d\n", !!result);
}
static ssize_t camera_power_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
bool state;
int err;
err = kstrtobool(buf, &state);
if (err)
return err;
err = write_ec_cmd(priv->adev->handle, VPCCMD_W_CAMERA, state);
if (err)
return err;
return count;
}
static DEVICE_ATTR_RW(camera_power);
static ssize_t conservation_mode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long result;
int err;
err = eval_gbmd(priv->adev->handle, &result);
if (err)
return err;
return sysfs_emit(buf, "%d\n", !!test_bit(GBMD_CONSERVATION_STATE_BIT, &result));
}
static ssize_t conservation_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
bool state;
int err;
err = kstrtobool(buf, &state);
if (err)
return err;
err = exec_sbmc(priv->adev->handle, state ? SBMC_CONSERVATION_ON : SBMC_CONSERVATION_OFF);
if (err)
return err;
return count;
}
static DEVICE_ATTR_RW(conservation_mode);
static ssize_t fan_mode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long result;
int err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_FAN, &result);
if (err)
return err;
return sysfs_emit(buf, "%lu\n", result);
}
static ssize_t fan_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned int state;
int err;
err = kstrtouint(buf, 0, &state);
if (err)
return err;
if (state > 4 || state == 3)
return -EINVAL;
err = write_ec_cmd(priv->adev->handle, VPCCMD_W_FAN, state);
if (err)
return err;
return count;
}
static DEVICE_ATTR_RW(fan_mode);
static ssize_t fn_lock_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long hals;
int err;
err = eval_hals(priv->adev->handle, &hals);
if (err)
return err;
return sysfs_emit(buf, "%d\n", !!test_bit(HALS_FNLOCK_STATE_BIT, &hals));
}
static ssize_t fn_lock_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
bool state;
int err;
err = kstrtobool(buf, &state);
if (err)
return err;
err = exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
if (err)
return err;
return count;
}
static DEVICE_ATTR_RW(fn_lock);
static ssize_t touchpad_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long result;
int err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &result);
if (err)
return err;
priv->r_touchpad_val = result;
return sysfs_emit(buf, "%d\n", !!result);
}
static ssize_t touchpad_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
bool state;
int err;
err = kstrtobool(buf, &state);
if (err)
return err;
err = write_ec_cmd(priv->adev->handle, VPCCMD_W_TOUCHPAD, state);
if (err)
return err;
priv->r_touchpad_val = state;
return count;
}
static DEVICE_ATTR_RW(touchpad);
static ssize_t usb_charging_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
unsigned long hals;
int err;
err = eval_hals(priv->adev->handle, &hals);
if (err)
return err;
return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals));
}
static ssize_t usb_charging_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
bool state;
int err;
err = kstrtobool(buf, &state);
if (err)
return err;
err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF);
if (err)
return err;
return count;
}
static DEVICE_ATTR_RW(usb_charging);
static struct attribute *ideapad_attributes[] = {
&dev_attr_camera_power.attr,
&dev_attr_conservation_mode.attr,
&dev_attr_fan_mode.attr,
&dev_attr_fn_lock.attr,
&dev_attr_touchpad.attr,
&dev_attr_usb_charging.attr,
NULL
};
static umode_t ideapad_is_visible(struct kobject *kobj,
struct attribute *attr,
int idx)
{
struct device *dev = kobj_to_dev(kobj);
struct ideapad_private *priv = dev_get_drvdata(dev);
bool supported = true;
if (attr == &dev_attr_camera_power.attr)
supported = test_bit(CFG_CAP_CAM_BIT, &priv->cfg);
else if (attr == &dev_attr_conservation_mode.attr)
supported = priv->features.conservation_mode;
else if (attr == &dev_attr_fan_mode.attr)
supported = priv->features.fan_mode;
else if (attr == &dev_attr_fn_lock.attr)
supported = priv->features.fn_lock;
else if (attr == &dev_attr_touchpad.attr)
supported = priv->features.touchpad_ctrl_via_ec;
else if (attr == &dev_attr_usb_charging.attr)
supported = priv->features.usb_charging;
return supported ? attr->mode : 0;
}
static const struct attribute_group ideapad_attribute_group = {
.is_visible = ideapad_is_visible,
.attrs = ideapad_attributes
};
/*
* DYTC Platform profile
*/
#define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */
#define DYTC_CMD_SET 1 /* To enable/disable IC function mode */
#define DYTC_CMD_GET 2 /* To get current IC function and mode */
#define DYTC_CMD_RESET 0x1ff /* To reset back to default */
#define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */
#define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */
#define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */
#define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */
#define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */
#define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */
#define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */
#define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */
#define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */
#define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */
#define DYTC_FUNCTION_MMC 11 /* Function = 11, desk mode */
#define DYTC_MODE_PERFORM 2 /* High power mode aka performance */
#define DYTC_MODE_LOW_POWER 3 /* Low power mode aka quiet */
#define DYTC_MODE_BALANCE 0xF /* Default mode aka balanced */
#define DYTC_SET_COMMAND(function, mode, on) \
(DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \
(mode) << DYTC_SET_MODE_BIT | \
(on) << DYTC_SET_VALID_BIT)
#define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 0)
#define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_BALANCE, 1)
static int convert_dytc_to_profile(int dytcmode, enum platform_profile_option *profile)
{
switch (dytcmode) {
case DYTC_MODE_LOW_POWER:
*profile = PLATFORM_PROFILE_LOW_POWER;
break;
case DYTC_MODE_BALANCE:
*profile = PLATFORM_PROFILE_BALANCED;
break;
case DYTC_MODE_PERFORM:
*profile = PLATFORM_PROFILE_PERFORMANCE;
break;
default: /* Unknown mode */
return -EINVAL;
}
return 0;
}
static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode)
{
switch (profile) {
case PLATFORM_PROFILE_LOW_POWER:
*perfmode = DYTC_MODE_LOW_POWER;
break;
case PLATFORM_PROFILE_BALANCED:
*perfmode = DYTC_MODE_BALANCE;
break;
case PLATFORM_PROFILE_PERFORMANCE:
*perfmode = DYTC_MODE_PERFORM;
break;
default: /* Unknown profile */
return -EOPNOTSUPP;
}
return 0;
}
/*
* dytc_profile_get: Function to register with platform_profile
* handler. Returns current platform profile.
*/
static int dytc_profile_get(struct platform_profile_handler *pprof,
enum platform_profile_option *profile)
{
struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
*profile = dytc->current_profile;
return 0;
}
/*
* Helper function - check if we are in CQL mode and if we are
* - disable CQL,
* - run the command
* - enable CQL
* If not in CQL mode, just run the command
*/
static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd,
unsigned long *output)
{
int err, cmd_err, cur_funcmode;
/* Determine if we are in CQL mode. This alters the commands we do */
err = eval_dytc(priv->adev->handle, DYTC_CMD_GET, output);
if (err)
return err;
cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF;
/* Check if we're OK to return immediately */
if (cmd == DYTC_CMD_GET && cur_funcmode != DYTC_FUNCTION_CQL)
return 0;
if (cur_funcmode == DYTC_FUNCTION_CQL) {
err = eval_dytc(priv->adev->handle, DYTC_DISABLE_CQL, NULL);
if (err)
return err;
}
cmd_err = eval_dytc(priv->adev->handle, cmd, output);
/* Check return condition after we've restored CQL state */
if (cur_funcmode == DYTC_FUNCTION_CQL) {
err = eval_dytc(priv->adev->handle, DYTC_ENABLE_CQL, NULL);
if (err)
return err;
}
return cmd_err;
}
/*
* dytc_profile_set: Function to register with platform_profile
* handler. Sets current platform profile.
*/
static int dytc_profile_set(struct platform_profile_handler *pprof,
enum platform_profile_option profile)
{
struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
struct ideapad_private *priv = dytc->priv;
unsigned long output;
int err;
err = mutex_lock_interruptible(&dytc->mutex);
if (err)
return err;
if (profile == PLATFORM_PROFILE_BALANCED) {
/* To get back to balanced mode we just issue a reset command */
err = eval_dytc(priv->adev->handle, DYTC_CMD_RESET, NULL);
if (err)
goto unlock;
} else {
int perfmode;
err = convert_profile_to_dytc(profile, &perfmode);
if (err)
goto unlock;
/* Determine if we are in CQL mode. This alters the commands we do */
err = dytc_cql_command(priv, DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1),
&output);
if (err)
goto unlock;
}
/* Success - update current profile */
dytc->current_profile = profile;
unlock:
mutex_unlock(&dytc->mutex);
return err;
}
static void dytc_profile_refresh(struct ideapad_private *priv)
{
enum platform_profile_option profile;
unsigned long output;
int err, perfmode;
mutex_lock(&priv->dytc->mutex);
err = dytc_cql_command(priv, DYTC_CMD_GET, &output);
mutex_unlock(&priv->dytc->mutex);
if (err)
return;
perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
if (convert_dytc_to_profile(perfmode, &profile))
return;
if (profile != priv->dytc->current_profile) {
priv->dytc->current_profile = profile;
platform_profile_notify();
}
}
static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
{
/* Ideapad 5 Pro 16ACH6 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "82L5")
}
},
{
/* Ideapad 5 15ITL05 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "IdeaPad 5 15ITL05")
}
},
{}
};
static int ideapad_dytc_profile_init(struct ideapad_private *priv)
{
int err, dytc_version;
unsigned long output;
if (!priv->features.dytc)
return -ENODEV;
err = eval_dytc(priv->adev->handle, DYTC_CMD_QUERY, &output);
/* For all other errors we can flag the failure */
if (err)
return err;
/* Check DYTC is enabled and supports mode setting */
if (!test_bit(DYTC_QUERY_ENABLE_BIT, &output)) {
dev_info(&priv->platform_device->dev, "DYTC_QUERY_ENABLE_BIT returned false\n");
return -ENODEV;
}
dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF;
if (dytc_version < 4) {
dev_info(&priv->platform_device->dev, "DYTC_VERSION < 4 is not supported\n");
return -ENODEV;
}
if (dytc_version < 5 &&
!(allow_v4_dytc || dmi_check_system(ideapad_dytc_v4_allow_table))) {
dev_info(&priv->platform_device->dev,
"DYTC_VERSION 4 support may not work. Pass ideapad_laptop.allow_v4_dytc=Y on the kernel commandline to enable\n");
return -ENODEV;
}
priv->dytc = kzalloc(sizeof(*priv->dytc), GFP_KERNEL);
if (!priv->dytc)
return -ENOMEM;
mutex_init(&priv->dytc->mutex);
priv->dytc->priv = priv;
priv->dytc->pprof.profile_get = dytc_profile_get;
priv->dytc->pprof.profile_set = dytc_profile_set;
/* Setup supported modes */
set_bit(PLATFORM_PROFILE_LOW_POWER, priv->dytc->pprof.choices);
set_bit(PLATFORM_PROFILE_BALANCED, priv->dytc->pprof.choices);
set_bit(PLATFORM_PROFILE_PERFORMANCE, priv->dytc->pprof.choices);
/* Create platform_profile structure and register */
err = platform_profile_register(&priv->dytc->pprof);
if (err)
goto pp_reg_failed;
/* Ensure initial values are correct */
dytc_profile_refresh(priv);
return 0;
pp_reg_failed:
mutex_destroy(&priv->dytc->mutex);
kfree(priv->dytc);
priv->dytc = NULL;
return err;
}
static void ideapad_dytc_profile_exit(struct ideapad_private *priv)
{
if (!priv->dytc)
return;
platform_profile_remove();
mutex_destroy(&priv->dytc->mutex);
kfree(priv->dytc);
priv->dytc = NULL;
}
/*
* Rfkill
*/
struct ideapad_rfk_data {
char *name;
int cfgbit;
int opcode;
int type;
};
static const struct ideapad_rfk_data ideapad_rfk_data[] = {
{ "ideapad_wlan", CFG_CAP_WIFI_BIT, VPCCMD_W_WIFI, RFKILL_TYPE_WLAN },
{ "ideapad_bluetooth", CFG_CAP_BT_BIT, VPCCMD_W_BT, RFKILL_TYPE_BLUETOOTH },
{ "ideapad_3g", CFG_CAP_3G_BIT, VPCCMD_W_3G, RFKILL_TYPE_WWAN },
};
static int ideapad_rfk_set(void *data, bool blocked)
{
struct ideapad_rfk_priv *priv = data;
int opcode = ideapad_rfk_data[priv->dev].opcode;
return write_ec_cmd(priv->priv->adev->handle, opcode, !blocked);
}
static const struct rfkill_ops ideapad_rfk_ops = {
.set_block = ideapad_rfk_set,
};
static void ideapad_sync_rfk_state(struct ideapad_private *priv)
{
unsigned long hw_blocked = 0;
int i;
if (priv->features.hw_rfkill_switch) {
if (read_ec_data(priv->adev->handle, VPCCMD_R_RF, &hw_blocked))
return;
hw_blocked = !hw_blocked;
}
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
if (priv->rfk[i])
rfkill_set_hw_state(priv->rfk[i], hw_blocked);
}
static int ideapad_register_rfkill(struct ideapad_private *priv, int dev)
{
unsigned long rf_enabled;
int err;
if (no_bt_rfkill && ideapad_rfk_data[dev].type == RFKILL_TYPE_BLUETOOTH) {
/* Force to enable bluetooth when no_bt_rfkill=1 */
write_ec_cmd(priv->adev->handle, ideapad_rfk_data[dev].opcode, 1);
return 0;
}
priv->rfk_priv[dev].dev = dev;
priv->rfk_priv[dev].priv = priv;
priv->rfk[dev] = rfkill_alloc(ideapad_rfk_data[dev].name,
&priv->platform_device->dev,
ideapad_rfk_data[dev].type,
&ideapad_rfk_ops,
&priv->rfk_priv[dev]);
if (!priv->rfk[dev])
return -ENOMEM;
err = read_ec_data(priv->adev->handle, ideapad_rfk_data[dev].opcode - 1, &rf_enabled);
if (err)
rf_enabled = 1;
rfkill_init_sw_state(priv->rfk[dev], !rf_enabled);
err = rfkill_register(priv->rfk[dev]);
if (err)
rfkill_destroy(priv->rfk[dev]);
return err;
}
static void ideapad_unregister_rfkill(struct ideapad_private *priv, int dev)
{
if (!priv->rfk[dev])
return;
rfkill_unregister(priv->rfk[dev]);
rfkill_destroy(priv->rfk[dev]);
}
/*
* Platform device
*/
static int ideapad_sysfs_init(struct ideapad_private *priv)
{
return device_add_group(&priv->platform_device->dev,
&ideapad_attribute_group);
}
static void ideapad_sysfs_exit(struct ideapad_private *priv)
{
device_remove_group(&priv->platform_device->dev,
&ideapad_attribute_group);
}
/*
* input device
*/
#define IDEAPAD_WMI_KEY 0x100
static const struct key_entry ideapad_keymap[] = {
{ KE_KEY, 6, { KEY_SWITCHVIDEOMODE } },
{ KE_KEY, 7, { KEY_CAMERA } },
{ KE_KEY, 8, { KEY_MICMUTE } },
{ KE_KEY, 11, { KEY_F16 } },
{ KE_KEY, 13, { KEY_WLAN } },
{ KE_KEY, 16, { KEY_PROG1 } },
{ KE_KEY, 17, { KEY_PROG2 } },
{ KE_KEY, 64, { KEY_PROG3 } },
{ KE_KEY, 65, { KEY_PROG4 } },
{ KE_KEY, 66, { KEY_TOUCHPAD_OFF } },
{ KE_KEY, 67, { KEY_TOUCHPAD_ON } },
{ KE_KEY, 128, { KEY_ESC } },
/*
* WMI keys
*/
/* FnLock (handled by the firmware) */
{ KE_IGNORE, 0x02 | IDEAPAD_WMI_KEY },
/* Esc (handled by the firmware) */
{ KE_IGNORE, 0x03 | IDEAPAD_WMI_KEY },
/* Customizable Lenovo Hotkey ("star" with 'S' inside) */
{ KE_KEY, 0x01 | IDEAPAD_WMI_KEY, { KEY_FAVORITES } },
/* Dark mode toggle */
{ KE_KEY, 0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
/* Sound profile switch */
{ KE_KEY, 0x12 | IDEAPAD_WMI_KEY, { KEY_PROG2 } },
/* Lenovo Virtual Background application */
{ KE_KEY, 0x28 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
/* Lenovo Support */
{ KE_KEY, 0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } },
/* Refresh Rate Toggle */
{ KE_KEY, 0x0a | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } },
{ KE_END },
};
static int ideapad_input_init(struct ideapad_private *priv)
{
struct input_dev *inputdev;
int err;
inputdev = input_allocate_device();
if (!inputdev)
return -ENOMEM;
inputdev->name = "Ideapad extra buttons";
inputdev->phys = "ideapad/input0";
inputdev->id.bustype = BUS_HOST;
inputdev->dev.parent = &priv->platform_device->dev;
err = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
if (err) {
dev_err(&priv->platform_device->dev,
"Could not set up input device keymap: %d\n", err);
goto err_free_dev;
}
err = input_register_device(inputdev);
if (err) {
dev_err(&priv->platform_device->dev,
"Could not register input device: %d\n", err);
goto err_free_dev;
}
priv->inputdev = inputdev;
return 0;
err_free_dev:
input_free_device(inputdev);
return err;
}
static void ideapad_input_exit(struct ideapad_private *priv)
{
input_unregister_device(priv->inputdev);
priv->inputdev = NULL;
}
static void ideapad_input_report(struct ideapad_private *priv,
unsigned long scancode)
{
sparse_keymap_report_event(priv->inputdev, scancode, 1, true);
}
static void ideapad_input_novokey(struct ideapad_private *priv)
{
unsigned long long_pressed;
if (read_ec_data(priv->adev->handle, VPCCMD_R_NOVO, &long_pressed))
return;
if (long_pressed)
ideapad_input_report(priv, 17);
else
ideapad_input_report(priv, 16);
}
static void ideapad_check_special_buttons(struct ideapad_private *priv)
{
unsigned long bit, value;
if (read_ec_data(priv->adev->handle, VPCCMD_R_SPECIAL_BUTTONS, &value))
return;
for_each_set_bit (bit, &value, 16) {
switch (bit) {
case 6: /* Z570 */
case 0: /* Z580 */
/* Thermal Management button */
ideapad_input_report(priv, 65);
break;
case 1:
/* OneKey Theater button */
ideapad_input_report(priv, 64);
break;
default:
dev_info(&priv->platform_device->dev,
"Unknown special button: %lu\n", bit);
break;
}
}
}
/*
* backlight
*/
static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
{
struct ideapad_private *priv = bl_get_data(blightdev);
unsigned long now;
int err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
if (err)
return err;
return now;
}
static int ideapad_backlight_update_status(struct backlight_device *blightdev)
{
struct ideapad_private *priv = bl_get_data(blightdev);
int err;
err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
blightdev->props.brightness);
if (err)
return err;
err = write_ec_cmd(priv->adev->handle, VPCCMD_W_BL_POWER,
blightdev->props.power != FB_BLANK_POWERDOWN);
if (err)
return err;
return 0;
}
static const struct backlight_ops ideapad_backlight_ops = {
.get_brightness = ideapad_backlight_get_brightness,
.update_status = ideapad_backlight_update_status,
};
static int ideapad_backlight_init(struct ideapad_private *priv)
{
struct backlight_device *blightdev;
struct backlight_properties props;
unsigned long max, now, power;
int err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &max);
if (err)
return err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
if (err)
return err;
err = read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power);
if (err)
return err;
memset(&props, 0, sizeof(props));
props.max_brightness = max;
props.type = BACKLIGHT_PLATFORM;
blightdev = backlight_device_register("ideapad",
&priv->platform_device->dev,
priv,
&ideapad_backlight_ops,
&props);
if (IS_ERR(blightdev)) {
err = PTR_ERR(blightdev);
dev_err(&priv->platform_device->dev,
"Could not register backlight device: %d\n", err);
return err;
}
priv->blightdev = blightdev;
blightdev->props.brightness = now;
blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
backlight_update_status(blightdev);
return 0;
}
static void ideapad_backlight_exit(struct ideapad_private *priv)
{
backlight_device_unregister(priv->blightdev);
priv->blightdev = NULL;
}
static void ideapad_backlight_notify_power(struct ideapad_private *priv)
{
struct backlight_device *blightdev = priv->blightdev;
unsigned long power;
if (!blightdev)
return;
if (read_ec_data(priv->adev->handle, VPCCMD_R_BL_POWER, &power))
return;
blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
}
static void ideapad_backlight_notify_brightness(struct ideapad_private *priv)
{
unsigned long now;
/* if we control brightness via acpi video driver */
if (!priv->blightdev)
read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now);
else
backlight_force_update(priv->blightdev, BACKLIGHT_UPDATE_HOTKEY);
}
/*
* keyboard backlight
*/
static int ideapad_kbd_bl_brightness_get(struct ideapad_private *priv)
{
unsigned long hals;
int err;
err = eval_hals(priv->adev->handle, &hals);
if (err)
return err;
return !!test_bit(HALS_KBD_BL_STATE_BIT, &hals);
}
static enum led_brightness ideapad_kbd_bl_led_cdev_brightness_get(struct led_classdev *led_cdev)
{
struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
return ideapad_kbd_bl_brightness_get(priv);
}
static int ideapad_kbd_bl_brightness_set(struct ideapad_private *priv, unsigned int brightness)
{
int err = exec_sals(priv->adev->handle, brightness ? SALS_KBD_BL_ON : SALS_KBD_BL_OFF);
if (err)
return err;
priv->kbd_bl.last_brightness = brightness;
return 0;
}
static int ideapad_kbd_bl_led_cdev_brightness_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct ideapad_private *priv = container_of(led_cdev, struct ideapad_private, kbd_bl.led);
return ideapad_kbd_bl_brightness_set(priv, brightness);
}
static void ideapad_kbd_bl_notify(struct ideapad_private *priv)
{
int brightness;
if (!priv->kbd_bl.initialized)
return;
brightness = ideapad_kbd_bl_brightness_get(priv);
if (brightness < 0)
return;
if (brightness == priv->kbd_bl.last_brightness)
return;
priv->kbd_bl.last_brightness = brightness;
led_classdev_notify_brightness_hw_changed(&priv->kbd_bl.led, brightness);
}
static int ideapad_kbd_bl_init(struct ideapad_private *priv)
{
int brightness, err;
if (!priv->features.kbd_bl)
return -ENODEV;
if (WARN_ON(priv->kbd_bl.initialized))
return -EEXIST;
brightness = ideapad_kbd_bl_brightness_get(priv);
if (brightness < 0)
return brightness;
priv->kbd_bl.last_brightness = brightness;
priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
priv->kbd_bl.led.max_brightness = 1;
priv->kbd_bl.led.brightness_get = ideapad_kbd_bl_led_cdev_brightness_get;
priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;
priv->kbd_bl.led.flags = LED_BRIGHT_HW_CHANGED;
err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led);
if (err)
return err;
priv->kbd_bl.initialized = true;
return 0;
}
static void ideapad_kbd_bl_exit(struct ideapad_private *priv)
{
if (!priv->kbd_bl.initialized)
return;
priv->kbd_bl.initialized = false;
led_classdev_unregister(&priv->kbd_bl.led);
}
/*
* module init/exit
*/
static void ideapad_sync_touchpad_state(struct ideapad_private *priv, bool send_events)
{
unsigned long value;
unsigned char param;
int ret;
/* Without reading from EC touchpad LED doesn't switch state */
ret = read_ec_data(priv->adev->handle, VPCCMD_R_TOUCHPAD, &value);
if (ret)
return;
/*
* Some IdeaPads don't really turn off touchpad - they only
* switch the LED state. We (de)activate KBC AUX port to turn
* touchpad off and on. We send KEY_TOUCHPAD_OFF and
* KEY_TOUCHPAD_ON to not to get out of sync with LED
*/
if (priv->features.ctrl_ps2_aux_port)
i8042_command(&param, value ? I8042_CMD_AUX_ENABLE : I8042_CMD_AUX_DISABLE);
/*
* On older models the EC controls the touchpad and toggles it on/off
* itself, in this case we report KEY_TOUCHPAD_ON/_OFF. Some models do
* an acpi-notify with VPC bit 5 set on resume, so this function get
* called with send_events=true on every resume. Therefor if the EC did
* not toggle, do nothing to avoid sending spurious KEY_TOUCHPAD_TOGGLE.
*/
if (send_events && value != priv->r_touchpad_val) {
ideapad_input_report(priv, value ? 67 : 66);
sysfs_notify(&priv->platform_device->dev.kobj, NULL, "touchpad");
}
priv->r_touchpad_val = value;
}
static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
{
struct ideapad_private *priv = data;
unsigned long vpc1, vpc2, bit;
if (read_ec_data(handle, VPCCMD_R_VPC1, &vpc1))
return;
if (read_ec_data(handle, VPCCMD_R_VPC2, &vpc2))
return;
vpc1 = (vpc2 << 8) | vpc1;
for_each_set_bit (bit, &vpc1, 16) {
switch (bit) {
case 13:
case 11:
case 8:
case 7:
case 6:
ideapad_input_report(priv, bit);
break;
case 10:
/*
* This event gets send on a Yoga 300-11IBR when the EC
* believes that the device has changed between laptop/
* tent/stand/tablet mode. The EC relies on getting
* angle info from 2 accelerometers through a special
* windows service calling a DSM on the DUAL250E ACPI-
* device. Linux does not do this, making the laptop/
* tent/stand/tablet mode info unreliable, so we simply
* ignore these events.
*/
break;
case 9:
ideapad_sync_rfk_state(priv);
break;
case 5:
ideapad_sync_touchpad_state(priv, true);
break;
case 4:
ideapad_backlight_notify_brightness(priv);
break;
case 3:
ideapad_input_novokey(priv);
break;
case 2:
ideapad_backlight_notify_power(priv);
break;
case 1:
/*
* Some IdeaPads report event 1 every ~20
* seconds while on battery power; some
* report this when changing to/from tablet
* mode; some report this when the keyboard
* backlight has changed.
*/
ideapad_kbd_bl_notify(priv);
break;
case 0:
ideapad_check_special_buttons(priv);
break;
default:
dev_info(&priv->platform_device->dev,
"Unknown event: %lu\n", bit);
}
}
}
/* On some models we need to call exec_sals(SALS_FNLOCK_ON/OFF) to set the LED */
static const struct dmi_system_id set_fn_lock_led_list[] = {
{
/* https://bugzilla.kernel.org/show_bug.cgi?id=212671 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion R7000P2020H"),
}
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Legion 5 15ARH05"),
}
},
{}
};
/*
* Some ideapads have a hardware rfkill switch, but most do not have one.
* Reading VPCCMD_R_RF always results in 0 on models without a hardware rfkill,
* switch causing ideapad_laptop to wrongly report all radios as hw-blocked.
* There used to be a long list of DMI ids for models without a hw rfkill
* switch here, but that resulted in playing whack a mole.
* More importantly wrongly reporting the wifi radio as hw-blocked, results in
* non working wifi. Whereas not reporting it hw-blocked, when it actually is
* hw-blocked results in an empty SSID list, which is a much more benign
* failure mode.
* So the default now is the much safer option of assuming there is no
* hardware rfkill switch. This default also actually matches most hardware,
* since having a hw rfkill switch is quite rare on modern hardware, so this
* also leads to a much shorter list.
*/
static const struct dmi_system_id hw_rfkill_list[] = {
{}
};
/*
* On some models the EC toggles the touchpad muted LED on touchpad toggle
* hotkey presses, but the EC does not actually disable the touchpad itself.
* On these models the driver needs to explicitly enable/disable the i8042
* (PS/2) aux port.
*/
static const struct dmi_system_id ctrl_ps2_aux_port_list[] = {
{
/* Lenovo Ideapad Z570 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
},
},
{}
};
static void ideapad_check_features(struct ideapad_private *priv)
{
acpi_handle handle = priv->adev->handle;
unsigned long val;
priv->features.set_fn_lock_led =
set_fn_lock_led || dmi_check_system(set_fn_lock_led_list);
priv->features.hw_rfkill_switch =
hw_rfkill_switch || dmi_check_system(hw_rfkill_list);
priv->features.ctrl_ps2_aux_port =
ctrl_ps2_aux_port || dmi_check_system(ctrl_ps2_aux_port_list);
priv->features.touchpad_ctrl_via_ec = touchpad_ctrl_via_ec;
if (!read_ec_data(handle, VPCCMD_R_FAN, &val))
priv->features.fan_mode = true;
if (acpi_has_method(handle, "GBMD") && acpi_has_method(handle, "SBMC"))
priv->features.conservation_mode = true;
if (acpi_has_method(handle, "DYTC"))
priv->features.dytc = true;
if (acpi_has_method(handle, "HALS") && acpi_has_method(handle, "SALS")) {
if (!eval_hals(handle, &val)) {
if (test_bit(HALS_FNLOCK_SUPPORT_BIT, &val))
priv->features.fn_lock = true;
if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val))
priv->features.kbd_bl = true;
if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val))
priv->features.usb_charging = true;
}
}
}
#if IS_ENABLED(CONFIG_ACPI_WMI)
/*
* WMI driver
*/
enum ideapad_wmi_event_type {
IDEAPAD_WMI_EVENT_ESC,
IDEAPAD_WMI_EVENT_FN_KEYS,
};
struct ideapad_wmi_private {
enum ideapad_wmi_event_type event;
};
static int ideapad_wmi_probe(struct wmi_device *wdev, const void *context)
{
struct ideapad_wmi_private *wpriv;
wpriv = devm_kzalloc(&wdev->dev, sizeof(*wpriv), GFP_KERNEL);
if (!wpriv)
return -ENOMEM;
*wpriv = *(const struct ideapad_wmi_private *)context;
dev_set_drvdata(&wdev->dev, wpriv);
return 0;
}
static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
{
struct ideapad_wmi_private *wpriv = dev_get_drvdata(&wdev->dev);
struct ideapad_private *priv;
unsigned long result;
mutex_lock(&ideapad_shared_mutex);
priv = ideapad_shared;
if (!priv)
goto unlock;
switch (wpriv->event) {
case IDEAPAD_WMI_EVENT_ESC:
ideapad_input_report(priv, 128);
break;
case IDEAPAD_WMI_EVENT_FN_KEYS:
if (priv->features.set_fn_lock_led &&
!eval_hals(priv->adev->handle, &result)) {
bool state = test_bit(HALS_FNLOCK_STATE_BIT, &result);
exec_sals(priv->adev->handle, state ? SALS_FNLOCK_ON : SALS_FNLOCK_OFF);
}
if (data->type != ACPI_TYPE_INTEGER) {
dev_warn(&wdev->dev,
"WMI event data is not an integer\n");
break;
}
dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n",
data->integer.value);
ideapad_input_report(priv,
data->integer.value | IDEAPAD_WMI_KEY);
break;
}
unlock:
mutex_unlock(&ideapad_shared_mutex);
}
static const struct ideapad_wmi_private ideapad_wmi_context_esc = {
.event = IDEAPAD_WMI_EVENT_ESC
};
static const struct ideapad_wmi_private ideapad_wmi_context_fn_keys = {
.event = IDEAPAD_WMI_EVENT_FN_KEYS
};
static const struct wmi_device_id ideapad_wmi_ids[] = {
{ "26CAB2E5-5CF1-46AE-AAC3-4A12B6BA50E6", &ideapad_wmi_context_esc }, /* Yoga 3 */
{ "56322276-8493-4CE8-A783-98C991274F5E", &ideapad_wmi_context_esc }, /* Yoga 700 */
{ "8FC0DE0C-B4E4-43FD-B0F3-8871711C1294", &ideapad_wmi_context_fn_keys }, /* Legion 5 */
{},
};
MODULE_DEVICE_TABLE(wmi, ideapad_wmi_ids);
static struct wmi_driver ideapad_wmi_driver = {
.driver = {
.name = "ideapad_wmi",
},
.id_table = ideapad_wmi_ids,
.probe = ideapad_wmi_probe,
.notify = ideapad_wmi_notify,
};
static int ideapad_wmi_driver_register(void)
{
return wmi_driver_register(&ideapad_wmi_driver);
}
static void ideapad_wmi_driver_unregister(void)
{
return wmi_driver_unregister(&ideapad_wmi_driver);
}
#else
static inline int ideapad_wmi_driver_register(void) { return 0; }
static inline void ideapad_wmi_driver_unregister(void) { }
#endif
/*
* ACPI driver
*/
static int ideapad_acpi_add(struct platform_device *pdev)
{
struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
struct ideapad_private *priv;
acpi_status status;
unsigned long cfg;
int err, i;
if (!adev || eval_int(adev->handle, "_CFG", &cfg))
return -ENODEV;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(&pdev->dev, priv);
priv->cfg = cfg;
priv->adev = adev;
priv->platform_device = pdev;
ideapad_check_features(priv);
err = ideapad_sysfs_init(priv);
if (err)
return err;
ideapad_debugfs_init(priv);
err = ideapad_input_init(priv);
if (err)
goto input_failed;
err = ideapad_kbd_bl_init(priv);
if (err) {
if (err != -ENODEV)
dev_warn(&pdev->dev, "Could not set up keyboard backlight LED: %d\n", err);
else
dev_info(&pdev->dev, "Keyboard backlight control not available\n");
}
/*
* On some models without a hw-switch (the yoga 2 13 at least)
* VPCCMD_W_RF must be explicitly set to 1 for the wifi to work.
*/
if (!priv->features.hw_rfkill_switch)
write_ec_cmd(priv->adev->handle, VPCCMD_W_RF, 1);
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
if (test_bit(ideapad_rfk_data[i].cfgbit, &priv->cfg))
ideapad_register_rfkill(priv, i);
ideapad_sync_rfk_state(priv);
ideapad_sync_touchpad_state(priv, false);
err = ideapad_dytc_profile_init(priv);
if (err) {
if (err != -ENODEV)
dev_warn(&pdev->dev, "Could not set up DYTC interface: %d\n", err);
else
dev_info(&pdev->dev, "DYTC interface is not available\n");
}
if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
err = ideapad_backlight_init(priv);
if (err && err != -ENODEV)
goto backlight_failed;
}
status = acpi_install_notify_handler(adev->handle,
ACPI_DEVICE_NOTIFY,
ideapad_acpi_notify, priv);
if (ACPI_FAILURE(status)) {
err = -EIO;
goto notification_failed;
}
err = ideapad_shared_init(priv);
if (err)
goto shared_init_failed;
return 0;
shared_init_failed:
acpi_remove_notify_handler(priv->adev->handle,
ACPI_DEVICE_NOTIFY,
ideapad_acpi_notify);
notification_failed:
ideapad_backlight_exit(priv);
backlight_failed:
ideapad_dytc_profile_exit(priv);
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ideapad_unregister_rfkill(priv, i);
ideapad_kbd_bl_exit(priv);
ideapad_input_exit(priv);
input_failed:
ideapad_debugfs_exit(priv);
ideapad_sysfs_exit(priv);
return err;
}
static int ideapad_acpi_remove(struct platform_device *pdev)
{
struct ideapad_private *priv = dev_get_drvdata(&pdev->dev);
int i;
ideapad_shared_exit(priv);
acpi_remove_notify_handler(priv->adev->handle,
ACPI_DEVICE_NOTIFY,
ideapad_acpi_notify);
ideapad_backlight_exit(priv);
ideapad_dytc_profile_exit(priv);
for (i = 0; i < IDEAPAD_RFKILL_DEV_NUM; i++)
ideapad_unregister_rfkill(priv, i);
ideapad_kbd_bl_exit(priv);
ideapad_input_exit(priv);
ideapad_debugfs_exit(priv);
ideapad_sysfs_exit(priv);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int ideapad_acpi_resume(struct device *dev)
{
struct ideapad_private *priv = dev_get_drvdata(dev);
ideapad_sync_rfk_state(priv);
ideapad_sync_touchpad_state(priv, false);
if (priv->dytc)
dytc_profile_refresh(priv);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(ideapad_pm, NULL, ideapad_acpi_resume);
static const struct acpi_device_id ideapad_device_ids[] = {
{"VPC2004", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
static struct platform_driver ideapad_acpi_driver = {
.probe = ideapad_acpi_add,
.remove = ideapad_acpi_remove,
.driver = {
.name = "ideapad_acpi",
.pm = &ideapad_pm,
.acpi_match_table = ACPI_PTR(ideapad_device_ids),
},
};
static int __init ideapad_laptop_init(void)
{
int err;
err = ideapad_wmi_driver_register();
if (err)
return err;
err = platform_driver_register(&ideapad_acpi_driver);
if (err) {
ideapad_wmi_driver_unregister();
return err;
}
return 0;
}
module_init(ideapad_laptop_init)
static void __exit ideapad_laptop_exit(void)
{
ideapad_wmi_driver_unregister();
platform_driver_unregister(&ideapad_acpi_driver);
}
module_exit(ideapad_laptop_exit)
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
MODULE_DESCRIPTION("IdeaPad ACPI Extras");
MODULE_LICENSE("GPL");
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