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path: root/drivers/platform/x86/ideapad-laptop.c
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Diffstat (limited to 'drivers/platform/x86/ideapad-laptop.c')
-rw-r--r--drivers/platform/x86/ideapad-laptop.c105
1 files changed, 64 insertions, 41 deletions
diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index e980dd18e5f6..edb9d2fb02ec 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -15,6 +15,7 @@
#include <linux/bug.h>
#include <linux/cleanup.h>
#include <linux/debugfs.h>
+#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/i8042.h>
@@ -142,7 +143,7 @@ enum {
struct ideapad_dytc_priv {
enum platform_profile_option current_profile;
- struct platform_profile_handler pprof;
+ struct device *ppdev; /* platform profile device */
struct mutex mutex; /* protects the DYTC interface */
struct ideapad_private *priv;
};
@@ -267,6 +268,20 @@ static void ideapad_shared_exit(struct ideapad_private *priv)
*/
#define IDEAPAD_EC_TIMEOUT 200 /* in ms */
+/*
+ * Some models (e.g., ThinkBook since 2024) have a low tolerance for being
+ * polled too frequently. Doing so may break the state machine in the EC,
+ * resulting in a hard shutdown.
+ *
+ * It is also observed that frequent polls may disturb the ongoing operation
+ * and notably delay the availability of EC response.
+ *
+ * These values are used as the delay before the first poll and the interval
+ * between subsequent polls to solve the above issues.
+ */
+#define IDEAPAD_EC_POLL_MIN_US 150
+#define IDEAPAD_EC_POLL_MAX_US 300
+
static int eval_int(acpi_handle handle, const char *name, unsigned long *res)
{
unsigned long long result;
@@ -383,7 +398,7 @@ static int read_ec_data(acpi_handle handle, unsigned long cmd, unsigned long *da
end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
while (time_before(jiffies, end_jiffies)) {
- schedule();
+ usleep_range(IDEAPAD_EC_POLL_MIN_US, IDEAPAD_EC_POLL_MAX_US);
err = eval_vpcr(handle, 1, &val);
if (err)
@@ -414,7 +429,7 @@ static int write_ec_cmd(acpi_handle handle, unsigned long cmd, unsigned long dat
end_jiffies = jiffies + msecs_to_jiffies(IDEAPAD_EC_TIMEOUT) + 1;
while (time_before(jiffies, end_jiffies)) {
- schedule();
+ usleep_range(IDEAPAD_EC_POLL_MIN_US, IDEAPAD_EC_POLL_MAX_US);
err = eval_vpcr(handle, 1, &val);
if (err)
@@ -854,6 +869,7 @@ static const struct attribute_group ideapad_attribute_group = {
.is_visible = ideapad_is_visible,
.attrs = ideapad_attributes
};
+__ATTRIBUTE_GROUPS(ideapad_attribute);
/*
* DYTC Platform profile
@@ -933,10 +949,10 @@ static int convert_profile_to_dytc(enum platform_profile_option profile, int *pe
* dytc_profile_get: Function to register with platform_profile
* handler. Returns current platform profile.
*/
-static int dytc_profile_get(struct platform_profile_handler *pprof,
+static int dytc_profile_get(struct device *dev,
enum platform_profile_option *profile)
{
- struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
+ struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
*profile = dytc->current_profile;
return 0;
@@ -986,10 +1002,10 @@ static int dytc_cql_command(struct ideapad_private *priv, unsigned long cmd,
* dytc_profile_set: Function to register with platform_profile
* handler. Sets current platform profile.
*/
-static int dytc_profile_set(struct platform_profile_handler *pprof,
+static int dytc_profile_set(struct device *dev,
enum platform_profile_option profile)
{
- struct ideapad_dytc_priv *dytc = container_of(pprof, struct ideapad_dytc_priv, pprof);
+ struct ideapad_dytc_priv *dytc = dev_get_drvdata(dev);
struct ideapad_private *priv = dytc->priv;
unsigned long output;
int err;
@@ -1023,6 +1039,15 @@ static int dytc_profile_set(struct platform_profile_handler *pprof,
return -EINTR;
}
+static int dytc_profile_probe(void *drvdata, unsigned long *choices)
+{
+ set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
+
+ return 0;
+}
+
static void dytc_profile_refresh(struct ideapad_private *priv)
{
enum platform_profile_option profile;
@@ -1041,7 +1066,7 @@ static void dytc_profile_refresh(struct ideapad_private *priv)
if (profile != priv->dytc->current_profile) {
priv->dytc->current_profile = profile;
- platform_profile_notify();
+ platform_profile_notify(priv->dytc->ppdev);
}
}
@@ -1063,6 +1088,12 @@ static const struct dmi_system_id ideapad_dytc_v4_allow_table[] = {
{}
};
+static const struct platform_profile_ops dytc_profile_ops = {
+ .probe = dytc_profile_probe,
+ .profile_get = dytc_profile_get,
+ .profile_set = dytc_profile_set,
+};
+
static int ideapad_dytc_profile_init(struct ideapad_private *priv)
{
int err, dytc_version;
@@ -1103,18 +1134,15 @@ static int ideapad_dytc_profile_init(struct ideapad_private *priv)
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)
+ priv->dytc->ppdev = devm_platform_profile_register(&priv->platform_device->dev,
+ "ideapad-laptop", priv->dytc,
+ &dytc_profile_ops);
+ if (IS_ERR(priv->dytc->ppdev)) {
+ err = PTR_ERR(priv->dytc->ppdev);
goto pp_reg_failed;
+ }
/* Ensure initial values are correct */
dytc_profile_refresh(priv);
@@ -1134,7 +1162,6 @@ 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);
@@ -1234,21 +1261,6 @@ static void ideapad_unregister_rfkill(struct ideapad_private *priv, int 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
@@ -1297,6 +1309,16 @@ static const struct key_entry ideapad_keymap[] = {
/* Specific to some newer models */
{ KE_KEY, 0x3e | IDEAPAD_WMI_KEY, { KEY_MICMUTE } },
{ KE_KEY, 0x3f | IDEAPAD_WMI_KEY, { KEY_RFKILL } },
+ /* Star- (User Assignable Key) */
+ { KE_KEY, 0x44 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
+ /* Eye */
+ { KE_KEY, 0x45 | IDEAPAD_WMI_KEY, { KEY_PROG3 } },
+ /* Performance toggle also Fn+Q, handled inside ideapad_wmi_notify() */
+ { KE_KEY, 0x3d | IDEAPAD_WMI_KEY, { KEY_PROG4 } },
+ /* shift + prtsc */
+ { KE_KEY, 0x2d | IDEAPAD_WMI_KEY, { KEY_CUT } },
+ { KE_KEY, 0x29 | IDEAPAD_WMI_KEY, { KEY_TOUCHPAD_TOGGLE } },
+ { KE_KEY, 0x2a | IDEAPAD_WMI_KEY, { KEY_ROOT_MENU } },
{ KE_END },
};
@@ -1647,7 +1669,7 @@ static int ideapad_kbd_bl_init(struct ideapad_private *priv)
priv->kbd_bl.led.name = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
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;
+ priv->kbd_bl.led.flags = LED_BRIGHT_HW_CHANGED | LED_RETAIN_AT_SHUTDOWN;
err = led_classdev_register(&priv->platform_device->dev, &priv->kbd_bl.led);
if (err)
@@ -1706,7 +1728,7 @@ static int ideapad_fn_lock_led_init(struct ideapad_private *priv)
priv->fn_lock.led.name = "platform::" LED_FUNCTION_FNLOCK;
priv->fn_lock.led.brightness_get = ideapad_fn_lock_led_cdev_get;
priv->fn_lock.led.brightness_set_blocking = ideapad_fn_lock_led_cdev_set;
- priv->fn_lock.led.flags = LED_BRIGHT_HW_CHANGED;
+ priv->fn_lock.led.flags = LED_BRIGHT_HW_CHANGED | LED_RETAIN_AT_SHUTDOWN;
err = led_classdev_register(&priv->platform_device->dev, &priv->fn_lock.led);
if (err)
@@ -2083,6 +2105,12 @@ static void ideapad_wmi_notify(struct wmi_device *wdev, union acpi_object *data)
dev_dbg(&wdev->dev, "WMI fn-key event: 0x%llx\n",
data->integer.value);
+ /* performance button triggered by 0x3d */
+ if (data->integer.value == 0x3d && priv->dytc) {
+ platform_profile_cycle();
+ break;
+ }
+
/* 0x02 FnLock, 0x03 Esc */
if (data->integer.value == 0x02 || data->integer.value == 0x03)
ideapad_fn_lock_led_notify(priv, data->integer.value == 0x02);
@@ -2164,10 +2192,6 @@ static int ideapad_acpi_add(struct 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);
@@ -2254,7 +2278,6 @@ backlight_failed:
input_failed:
ideapad_debugfs_exit(priv);
- ideapad_sysfs_exit(priv);
return err;
}
@@ -2282,7 +2305,6 @@ static void ideapad_acpi_remove(struct platform_device *pdev)
ideapad_kbd_bl_exit(priv);
ideapad_input_exit(priv);
ideapad_debugfs_exit(priv);
- ideapad_sysfs_exit(priv);
}
#ifdef CONFIG_PM_SLEEP
@@ -2314,6 +2336,7 @@ static struct platform_driver ideapad_acpi_driver = {
.name = "ideapad_acpi",
.pm = &ideapad_pm,
.acpi_match_table = ACPI_PTR(ideapad_device_ids),
+ .dev_groups = ideapad_attribute_groups,
},
};
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-21 06:28:36 +0300