diff options
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 30 |
1 files changed, 11 insertions, 19 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 48b16b323c89..649786de4a79 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -1187,22 +1187,17 @@ static int toshiba_hotkey_event_type_get(struct toshiba_acpi_dev *dev, } /* Transflective Backlight */ -static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled) +static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 *status) { - u32 hci_result; - u32 status; + u32 hci_result = hci_read(dev, HCI_TR_BACKLIGHT, status); - hci_result = hci_read(dev, HCI_TR_BACKLIGHT, &status); - *enabled = !status; return hci_result == TOS_SUCCESS ? 0 : -EIO; } -static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable) +static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, u32 status) { - u32 hci_result; - u32 value = !enable; + u32 hci_result = hci_write(dev, HCI_TR_BACKLIGHT, !status); - hci_result = hci_write(dev, HCI_TR_BACKLIGHT, value); return hci_result == TOS_SUCCESS ? 0 : -EIO; } @@ -1216,12 +1211,11 @@ static int __get_lcd_brightness(struct toshiba_acpi_dev *dev) int brightness = 0; if (dev->tr_backlight_supported) { - bool enabled; - int ret = get_tr_backlight_status(dev, &enabled); + int ret = get_tr_backlight_status(dev, &value); if (ret) return ret; - if (enabled) + if (value) return 0; brightness++; } @@ -1271,8 +1265,7 @@ static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value) u32 hci_result; if (dev->tr_backlight_supported) { - bool enable = !value; - int ret = set_tr_backlight_status(dev, enable); + int ret = set_tr_backlight_status(dev, !value); if (ret) return ret; @@ -2563,7 +2556,6 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev) struct backlight_properties props; int brightness; int ret; - bool enabled; /* * Some machines don't support the backlight methods at all, and @@ -2580,10 +2572,6 @@ static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev) return 0; } - /* Determine whether or not BIOS supports transflective backlight */ - ret = get_tr_backlight_status(dev, &enabled); - dev->tr_backlight_supported = !ret; - /* * Tell acpi-video-detect code to prefer vendor backlight on all * systems with transflective backlight and on dmi matched systems. @@ -2723,6 +2711,10 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev) if (toshiba_acpi_setup_keyboard(dev)) pr_info("Unable to activate hotkeys\n"); + /* Determine whether or not BIOS supports transflective backlight */ + ret = get_tr_backlight_status(dev, &dummy); + dev->tr_backlight_supported = !ret; + ret = toshiba_acpi_setup_backlight(dev); if (ret) goto error; |