src/mainboard/dell/e6400/blc.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <commonlib/helpers.h>
   4 #include <northbridge/intel/gm45/gm45.h>
   5
   6 /*
   7  * This contains a list of panel IDs and a known well working
   8  * backlight PWM frequency.
   9  */
  10 static const struct blc_pwm_t blc_entries[] = {
  11         /*
  12          * Not sure if that's just a corrupt byte or just something
  13          * weird about the EDID of the panel in my system. Also, the
  14          * vendor firmware sets the pwm frequency to a rather high
  15          * value compared to other GM45 systems in the tree.
  16          */
  17         {"G022H\200141WX5", 12315},
  18 };
  19
  20 int get_blc_values(const struct blc_pwm_t **entries)
  21 {
  22         *entries = blc_entries;
  23         return ARRAY_SIZE(blc_entries);
  24 }