diff options
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 188 |
1 files changed, 156 insertions, 32 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 2a84652a4f0e..edd8f3dad6b4 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -138,8 +138,12 @@ MODULE_LICENSE("GPL"); #define HCI_WIRELESS_BT_PRESENT 0x0f #define HCI_WIRELESS_BT_ATTACH 0x40 #define HCI_WIRELESS_BT_POWER 0x80 +#define SCI_KBD_MODE_MASK 0x1f #define SCI_KBD_MODE_FNZ 0x1 #define SCI_KBD_MODE_AUTO 0x2 +#define SCI_KBD_MODE_ON 0x8 +#define SCI_KBD_MODE_OFF 0x10 +#define SCI_KBD_TIME_MAX 0x3c001a struct toshiba_acpi_dev { struct acpi_device *acpi_dev; @@ -155,6 +159,7 @@ struct toshiba_acpi_dev { int force_fan; int last_key_event; int key_event_valid; + int kbd_type; int kbd_mode; int kbd_time; @@ -495,6 +500,42 @@ static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev) } /* KBD Illumination */ +static int toshiba_kbd_illum_available(struct toshiba_acpi_dev *dev) +{ + u32 in[HCI_WORDS] = { SCI_GET, SCI_KBD_ILLUM_STATUS, 0, 0, 0, 0 }; + u32 out[HCI_WORDS]; + acpi_status status; + + if (!sci_open(dev)) + return 0; + + status = hci_raw(dev, in, out); + sci_close(dev); + if (ACPI_FAILURE(status) || out[0] == SCI_INPUT_DATA_ERROR) { + pr_err("ACPI call to query kbd illumination support failed\n"); + return 0; + } else if (out[0] == HCI_NOT_SUPPORTED) { + pr_info("Keyboard illumination not available\n"); + return 0; + } + + /* Check for keyboard backlight timeout max value, + * previous kbd backlight implementation set this to + * 0x3c0003, and now the new implementation set this + * to 0x3c001a, use this to distinguish between them + */ + if (out[3] == SCI_KBD_TIME_MAX) + dev->kbd_type = 2; + else + dev->kbd_type = 1; + /* Get the current keyboard backlight mode */ + dev->kbd_mode = out[2] & SCI_KBD_MODE_MASK; + /* Get the current time (1-60 seconds) */ + dev->kbd_time = out[2] >> HCI_MISC_SHIFT; + + return 1; +} + static int toshiba_kbd_illum_status_set(struct toshiba_acpi_dev *dev, u32 time) { u32 result; @@ -1254,6 +1295,62 @@ static const struct backlight_ops toshiba_backlight_data = { /* * Sysfs files */ +static ssize_t toshiba_kbd_bl_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); +static ssize_t toshiba_kbd_bl_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t toshiba_kbd_type_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t toshiba_available_kbd_modes_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); +static ssize_t toshiba_kbd_bl_timeout_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t toshiba_touchpad_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); +static ssize_t toshiba_touchpad_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t toshiba_position_show(struct device *dev, + struct device_attribute *attr, + char *buf); + +static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR, + toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store); +static DEVICE_ATTR(kbd_type, S_IRUGO, toshiba_kbd_type_show, NULL); +static DEVICE_ATTR(available_kbd_modes, S_IRUGO, + toshiba_available_kbd_modes_show, NULL); +static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR, + toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store); +static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR, + toshiba_touchpad_show, toshiba_touchpad_store); +static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL); + +static struct attribute *toshiba_attributes[] = { + &dev_attr_kbd_backlight_mode.attr, + &dev_attr_kbd_type.attr, + &dev_attr_available_kbd_modes.attr, + &dev_attr_kbd_backlight_timeout.attr, + &dev_attr_touchpad.attr, + &dev_attr_position.attr, + NULL, +}; + +static umode_t toshiba_sysfs_is_visible(struct kobject *, + struct attribute *, int); + +static struct attribute_group toshiba_attr_group = { + .is_visible = toshiba_sysfs_is_visible, + .attrs = toshiba_attributes, +}; static ssize_t toshiba_kbd_bl_mode_store(struct device *dev, struct device_attribute *attr, @@ -1268,20 +1365,50 @@ static ssize_t toshiba_kbd_bl_mode_store(struct device *dev, ret = kstrtoint(buf, 0, &mode); if (ret) return ret; - if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO) - return -EINVAL; + + /* Check for supported modes depending on keyboard backlight type */ + if (toshiba->kbd_type == 1) { + /* Type 1 supports SCI_KBD_MODE_FNZ and SCI_KBD_MODE_AUTO */ + if (mode != SCI_KBD_MODE_FNZ && mode != SCI_KBD_MODE_AUTO) + return -EINVAL; + } else if (toshiba->kbd_type == 2) { + /* Type 2 doesn't support SCI_KBD_MODE_FNZ */ + if (mode != SCI_KBD_MODE_AUTO && mode != SCI_KBD_MODE_ON && + mode != SCI_KBD_MODE_OFF) + return -EINVAL; + } /* Set the Keyboard Backlight Mode where: - * Mode - Auto (2) | FN-Z (1) * Auto - KBD backlight turns off automatically in given time * FN-Z - KBD backlight "toggles" when hotkey pressed + * ON - KBD backlight is always on + * OFF - KBD backlight is always off */ + + /* Only make a change if the actual mode has changed */ if (toshiba->kbd_mode != mode) { + /* Shift the time to "base time" (0x3c0000 == 60 seconds) */ time = toshiba->kbd_time << HCI_MISC_SHIFT; - time = time + toshiba->kbd_mode; + + /* OR the "base time" to the actual method format */ + if (toshiba->kbd_type == 1) { + /* Type 1 requires the current mode */ + time |= toshiba->kbd_mode; + } else if (toshiba->kbd_type == 2) { + /* Type 2 requires the desired mode */ + time |= mode; + } + ret = toshiba_kbd_illum_status_set(toshiba, time); if (ret) return ret; + + /* Update sysfs entries on successful mode change*/ + ret = sysfs_update_group(&toshiba->acpi_dev->dev.kobj, + &toshiba_attr_group); + if (ret) + return ret; + toshiba->kbd_mode = mode; } @@ -1298,7 +1425,30 @@ static ssize_t toshiba_kbd_bl_mode_show(struct device *dev, if (toshiba_kbd_illum_status_get(toshiba, &time) < 0) return -EIO; - return sprintf(buf, "%i\n", time & 0x07); + return sprintf(buf, "%i\n", time & SCI_KBD_MODE_MASK); +} + +static ssize_t toshiba_kbd_type_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + + return sprintf(buf, "%d\n", toshiba->kbd_type); +} + +static ssize_t toshiba_available_kbd_modes_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + + if (toshiba->kbd_type == 1) + return sprintf(buf, "%x %x\n", + SCI_KBD_MODE_FNZ, SCI_KBD_MODE_AUTO); + + return sprintf(buf, "%x %x %x\n", + SCI_KBD_MODE_AUTO, SCI_KBD_MODE_ON, SCI_KBD_MODE_OFF); } static ssize_t toshiba_kbd_bl_timeout_store(struct device *dev, @@ -1394,22 +1544,6 @@ static ssize_t toshiba_position_show(struct device *dev, return sprintf(buf, "%d %d %d\n", x, y, z); } -static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR, - toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store); -static DEVICE_ATTR(kbd_backlight_timeout, S_IRUGO | S_IWUSR, - toshiba_kbd_bl_timeout_show, toshiba_kbd_bl_timeout_store); -static DEVICE_ATTR(touchpad, S_IRUGO | S_IWUSR, - toshiba_touchpad_show, toshiba_touchpad_store); -static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL); - -static struct attribute *toshiba_attributes[] = { - &dev_attr_kbd_backlight_mode.attr, - &dev_attr_kbd_backlight_timeout.attr, - &dev_attr_touchpad.attr, - &dev_attr_position.attr, - NULL, -}; - static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, struct attribute *attr, int idx) { @@ -1429,11 +1563,6 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, return exists ? attr->mode : 0; } -static struct attribute_group toshiba_attr_group = { - .is_visible = toshiba_sysfs_is_visible, - .attrs = toshiba_attributes, -}; - static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str, struct serio *port) { @@ -1765,12 +1894,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev) dev->eco_supported = 1; } - ret = toshiba_kbd_illum_status_get(dev, &dummy); - if (!ret) { - dev->kbd_time = dummy >> HCI_MISC_SHIFT; - dev->kbd_mode = dummy & 0x07; - } - dev->kbd_illum_supported = !ret; + dev->kbd_illum_supported = toshiba_kbd_illum_available(dev); /* * Only register the LED if KBD illumination is supported * and the keyboard backlight operation mode is set to FN-Z |