diff options
| -rw-r--r-- | src/drivers/gfx/generic/generic.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/drivers/gfx/generic/generic.c b/src/drivers/gfx/generic/generic.c index cd323142da..0714565b2d 100644 --- a/src/drivers/gfx/generic/generic.c +++ b/src/drivers/gfx/generic/generic.c @@ -140,6 +140,42 @@ static void gfx_fill_ssdt_generator(const struct device *dev) if (config->device[i].use_pld) acpigen_write_pld(&config->device[i].pld); + /* Generate ACPI brightness controls for LCD on Intel iGPU */ + if (CONFIG(INTEL_GMA_ACPI) && strcmp(config->device[i].name, "LCD0") == 0) { + /* + Method (_BCL, 0, NotSerialized) + { + Return (^^XBCL()) + } + */ + acpigen_write_method("_BCL", 0); + acpigen_emit_byte(RETURN_OP); + acpigen_emit_namestring("^^XBCL"); + acpigen_pop_len(); + + /* + Method (_BCM, 1, NotSerialized) + { + ^^XBCM(Arg0) + } + */ + acpigen_write_method("_BCM", 1); + acpigen_emit_namestring("^^XBCM"); + acpigen_emit_byte(ARG0_OP); + acpigen_pop_len(); + + /* + Method (_BQC, 0, NotSerialized) + { + Return (^^XBQC()) + } + */ + acpigen_write_method("_BQC", 0); + acpigen_emit_byte(RETURN_OP); + acpigen_emit_namestring("^^XBQC"); + acpigen_pop_len(); + } + acpigen_pop_len(); /* Device */ } acpigen_pop_len(); /* Scope */ |