diff options
Diffstat (limited to 'drivers/misc/thinkpad_acpi.h')
| -rw-r--r-- | drivers/misc/thinkpad_acpi.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/misc/thinkpad_acpi.h b/drivers/misc/thinkpad_acpi.h index 09b2282fed0..b7a4a888cc8 100644 --- a/drivers/misc/thinkpad_acpi.h +++ b/drivers/misc/thinkpad_acpi.h @@ -32,6 +32,7 @@ #include <linux/list.h> #include <linux/mutex.h> +#include <linux/nvram.h> #include <linux/proc_fs.h> #include <linux/sysfs.h> #include <linux/backlight.h> @@ -80,6 +81,11 @@ #define TP_CMOS_BRIGHTNESS_UP 4 #define TP_CMOS_BRIGHTNESS_DOWN 5 +/* ThinkPad CMOS NVRAM constants */ +#define TP_NVRAM_ADDR_BRIGHTNESS 0x5e +#define TP_NVRAM_MASK_LEVEL_BRIGHTNESS 0x07 +#define TP_NVRAM_POS_LEVEL_BRIGHTNESS 0 + #define onoff(status,bit) ((status) & (1 << (bit)) ? "on" : "off") #define enabled(status,bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") #define strlencmp(a,b) (strncmp((a), (b), strlen(b))) @@ -323,6 +329,7 @@ static int bluetooth_write(char *buf); static struct backlight_device *ibm_backlight_device; static int brightness_offset = 0x31; +static int brightness_mode; static int brightness_init(struct ibm_init_struct *iibm); static void brightness_exit(void); |