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Message-Id: <1422733288-11733-5-git-send-email-coproscefalo@gmail.com>
Date: Sat, 31 Jan 2015 12:41:26 -0700
From: Azael Avalos <coproscefalo@...il.com>
To: Darren Hart <dvhart@...radead.org>,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Azael Avalos <coproscefalo@...il.com>
Subject: [PATCH 4/6] 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.
Signed-off-by: Azael Avalos <coproscefalo@...il.com>
---
drivers/platform/x86/toshiba_acpi.c | 98 +++++++++++++++++++++++++++++++++++++
1 file changed, 98 insertions(+)
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index c79211a..baf3376 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -121,6 +121,7 @@ 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
@@ -194,6 +195,7 @@ 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;
@@ -1031,6 +1033,51 @@ 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)
@@ -1621,6 +1668,12 @@ 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,
@@ -1650,6 +1703,9 @@ 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,
@@ -1665,6 +1721,7 @@ 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,
};
@@ -2150,6 +2207,42 @@ 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;
+
+ return count;
+}
+
static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
struct attribute *attr, int idx)
{
@@ -2177,6 +2270,8 @@ 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;
}
@@ -2598,6 +2693,9 @@ 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);
--
2.2.2
--
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