diff options
Diffstat (limited to 'src/mainboard/lenovo/x200/blc.c')
| -rw-r--r-- | src/mainboard/lenovo/x200/blc.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/x200/blc.c b/src/mainboard/lenovo/x200/blc.c index 3f8aadb637..6c5779a0b2 100644 --- a/src/mainboard/lenovo/x200/blc.c +++ b/src/mainboard/lenovo/x200/blc.c @@ -15,7 +15,9 @@ #include <stdint.h> #include <commonlib/helpers.h> +#include <console/console.h> #include <northbridge/intel/gm45/gm45.h> +#include <drivers/intel/gma/opregion.h> static const struct blc_pwm_t blc_entries[] = { /* corrected to 320MHz CDClk, vendor set 753; works fine at both: */ @@ -43,3 +45,22 @@ int get_blc_values(const struct blc_pwm_t **entries) *entries = blc_entries; return ARRAY_SIZE(blc_entries); } + +const char *mainboard_vbt_filename(void) +{ + u16 pwm_freq; + + pwm_freq = get_blc_pwm_freq_value(NULL); + + if (pwm_freq == 0) { + printk(BIOS_DEBUG, + "GMA: Display backlight type not found, assuming LED\n"); + return "data_led.vbt"; + } else if (pwm_freq > 200) { + printk(BIOS_DEBUG, "GMA: Using LED backlight VBT\n"); + return "data_led.vbt"; + } else { + printk(BIOS_DEBUG, "GMA: Using CCFL backlight VBT\n"); + return "data_ccfl.vbt"; + } +} |