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Commit 35d53cea authored by Azael Avalos's avatar Azael Avalos Committed by Darren Hart
Browse files

toshiba_acpi: Add support for Panel Power ON 



Toshiba laptops come with a feature called "Panel Open - Power ON",
which makes the laptop turn on whenever the LID is opened.

This patch adds support for such feature, by creating a sysfs entry
named "panel_power_on", accepting only two values, 0 to disable and
1 to enable such feature, however, a reboot is needed on every mode
change.

Signed-off-by: default avatarAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
parent bae84195

drivers/platform/x86/toshiba_acpi.c

+100 −0
Original line number Diff line number Diff line
@@ -122,6 +122,7 @@ MODULE_LICENSE("GPL"); 
#define HCI_KBD_ILLUMINATION		0x0095

#define HCI_ECO_MODE			0x0097

#define HCI_ACCELEROMETER2		0x00a6

#define SCI_PANEL_POWER_ON		0x010d

#define SCI_ILLUMINATION		0x014e

#define SCI_USB_SLEEP_CHARGE		0x0150

#define SCI_KBD_ILLUM_STATUS		0x015c
@@ -195,6 +196,7 @@ struct toshiba_acpi_dev { 
	unsigned int usb_rapid_charge_supported:1;

	unsigned int usb_sleep_music_supported:1;

	unsigned int kbd_function_keys_supported:1;

	unsigned int panel_power_on_supported:1;

	unsigned int sysfs_created:1;



	struct mutex mutex;
@@ -1048,6 +1050,51 @@ static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode) 
	return 0;

}



/* Panel Power ON */

static int toshiba_panel_power_on_get(struct toshiba_acpi_dev *dev, u32 *state)

{

	u32 result;



	if (!sci_open(dev))

		return -EIO;



	result = sci_read(dev, SCI_PANEL_POWER_ON, state);

	sci_close(dev);

	if (result == TOS_FAILURE) {

		pr_err("ACPI call to get Panel Power ON failed\n");

		return -EIO;

	} else if (result == TOS_NOT_SUPPORTED) {

		pr_info("Panel Power on not supported\n");

		return -ENODEV;

	} else if (result == TOS_INPUT_DATA_ERROR) {

		return -EIO;

	}



	return 0;

}



static int toshiba_panel_power_on_set(struct toshiba_acpi_dev *dev, u32 state)

{

	u32 result;



	if (!sci_open(dev))

		return -EIO;



	result = sci_write(dev, SCI_PANEL_POWER_ON, state);

	sci_close(dev);

	if (result == TOS_FAILURE) {

		pr_err("ACPI call to set Panel Power ON failed\n");

		return -EIO;

	} else if (result == TOS_NOT_SUPPORTED) {

		pr_info("Panel Power ON not supported\n");

		return -ENODEV;

	} else if (result == TOS_INPUT_DATA_ERROR) {

		return -EIO;

	}



	return 0;

}



/* Bluetooth rfkill handlers */



static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
@@ -1638,6 +1685,12 @@ static ssize_t toshiba_kbd_function_keys_show(struct device *dev, 
static ssize_t toshiba_kbd_function_keys_store(struct device *dev,

					       struct device_attribute *attr,

					       const char *buf, size_t count);

static ssize_t toshiba_panel_power_on_show(struct device *dev,

					   struct device_attribute *attr,

					   char *buf);

static ssize_t toshiba_panel_power_on_store(struct device *dev,

					    struct device_attribute *attr,

					    const char *buf, size_t count);



static DEVICE_ATTR(version, S_IRUGO, toshiba_version_show, NULL);

static DEVICE_ATTR(fan, S_IRUGO | S_IWUSR,
@@ -1667,6 +1720,9 @@ static DEVICE_ATTR(usb_sleep_music, S_IRUGO | S_IWUSR, 
static DEVICE_ATTR(kbd_function_keys, S_IRUGO | S_IWUSR,

		   toshiba_kbd_function_keys_show,

		   toshiba_kbd_function_keys_store);

static DEVICE_ATTR(panel_power_on, S_IRUGO | S_IWUSR,

		   toshiba_panel_power_on_show,

		   toshiba_panel_power_on_store);



static struct attribute *toshiba_attributes[] = {

	&dev_attr_version.attr,
@@ -1682,6 +1738,7 @@ static struct attribute *toshiba_attributes[] = { 
	&dev_attr_usb_rapid_charge.attr,

	&dev_attr_usb_sleep_music.attr,

	&dev_attr_kbd_function_keys.attr,

	&dev_attr_panel_power_on.attr,

	NULL,

};
@@ -2169,6 +2226,44 @@ static ssize_t toshiba_kbd_function_keys_store(struct device *dev, 
	return count;

}



static ssize_t toshiba_panel_power_on_show(struct device *dev,

					   struct device_attribute *attr,

					   char *buf)

{

	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);

	u32 state;

	int ret;



	ret = toshiba_panel_power_on_get(toshiba, &state);

	if (ret < 0)

		return ret;



	return sprintf(buf, "%d\n", state);

}



static ssize_t toshiba_panel_power_on_store(struct device *dev,

					    struct device_attribute *attr,

					    const char *buf, size_t count)

{

	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);

	int state;

	int ret;



	ret = kstrtoint(buf, 0, &state);

	if (ret)

		return ret;

	if (state != 0 && state != 1)

		return -EINVAL;



	ret = toshiba_panel_power_on_set(toshiba, state);

	if (ret)

		return ret;



	pr_info("Reboot for changes to Panel Power ON to take effect");



	return count;

}



static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,

					struct attribute *attr, int idx)

{
@@ -2196,6 +2291,8 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, 
		exists = (drv->usb_sleep_music_supported) ? true : false;

	else if (attr == &dev_attr_kbd_function_keys.attr)

		exists = (drv->kbd_function_keys_supported) ? true : false;

	else if (attr == &dev_attr_panel_power_on.attr)

		exists = (drv->panel_power_on_supported) ? true : false;



	return exists ? attr->mode : 0;

}
@@ -2617,6 +2714,9 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev) 
	ret = toshiba_function_keys_get(dev, &dummy);

	dev->kbd_function_keys_supported = !ret;



	ret = toshiba_panel_power_on_get(dev, &dummy);

	dev->panel_power_on_supported = !ret;



	/* Determine whether or not BIOS supports fan and video interfaces */



	ret = get_video_status(dev, &dummy);