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authorAzael Avalos <coproscefalo@gmail.com>2015-07-22 18:09:13 -0600
committerDarren Hart <dvhart@linux.intel.com>2015-07-24 14:18:00 -0700
commit695f6060903cefa08ffb78433136f51ac0f94488 (patch)
treed7f6fc53ff5234c46017a32672c5c79de82b65f7 /drivers/platform
parenta88bc06e5aec4984f5bf01c6d410a0939134f737 (diff)
toshiba_acpi: Transflective backlight updates
This patch changes the tr function second parameter from bool to u32, to be on par with the rest of the TCI functions of the driver, and the code was updated accordingly. Also, the check for translective support was moved to the *add function, as the {__get, set}_lcd_brightness functions make use of it. Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/toshiba_acpi.c30
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;