diff options
Diffstat (limited to 'src/drivers/intel/gma/acpi.c')
-rw-r--r-- | src/drivers/intel/gma/acpi.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/drivers/intel/gma/acpi.c b/src/drivers/intel/gma/acpi.c new file mode 100644 index 0000000000..c3a9b8a266 --- /dev/null +++ b/src/drivers/intel/gma/acpi.c @@ -0,0 +1,135 @@ +/* + * Copyright (C) 2014 Vladimir Serbinenko + * Subject to the GNU GPL v2, or (at your option) any later version. + */ + +#include <arch/acpi.h> +#include <arch/acpigen.h> +#include <string.h> +#include "i915.h" + +void +drivers_intel_gma_displays_ssdt_generate(const struct i915_gpu_controller_info *conf) +{ + size_t i; + const char *names[] = { "UNK", "VGA", "TV", "DVI", "LCD" }; + int counters[ARRAY_SIZE(names)]; + + memset(counters, 0, sizeof(counters)); + + acpigen_write_scope("\\_SB.PCI0.GFX0"); + + /* + Method (_DOD, 0) + { + Return (Package() { + 0x5a5a5a5a, + 0x5a5a5a5a, + 0x5a5a5a5a + }) + } + */ + acpigen_write_method("_DOD", 0); + acpigen_emit_byte(0xa4); /* ReturnOp. */ + acpigen_write_package(conf->ndid); + + for (i = 0; i < conf->ndid; i++) { + acpigen_write_dword (conf->did[i] | 0x80010000); + } + acpigen_pop_len(); /* End Package. */ + acpigen_pop_len(); /* End Method. */ + + for (i = 0; i < conf->ndid; i++) { + char name[10]; + char *ptr; + int kind; + kind = (conf->did[i] >> 8) & 0xf; + if (kind >= ARRAY_SIZE(names)) { + kind = 0; + } + strcpy(name, names[kind]); + for (ptr = name; *ptr; ptr++); + *ptr++ = counters[kind] + '0'; + *ptr++ = '\0'; + counters[kind]++; + acpigen_write_device(name); + /* Name (_ADR, 0x0410) */ + acpigen_write_name_dword("_ADR", conf->did[i] & 0xffff); + + /* ACPI brightness for LCD. */ + if (kind == 4) { + /* + Method (_BCL, 0, NotSerialized) + { + Return (^^XBCL()) + } + */ + acpigen_write_method("_BCL", 0); + acpigen_emit_byte(0xa4); /* ReturnOp. */ + 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(0x68); /* Arg0Op. */ + acpigen_pop_len(); + + /* + Method (_BQC, 0, NotSerialized) + { + Return (^^XBQC()) + } + */ + acpigen_write_method("_BQC", 0); + acpigen_emit_byte(0xa4); /* ReturnOp. */ + acpigen_emit_namestring("^^XBQC"); + acpigen_pop_len(); + } + + /* + Method(_DCS, 0) + { + Return (^^XDCS(<device number>)) + } + */ + acpigen_write_method("_DCS", 0); + acpigen_emit_byte(0xa4); /* ReturnOp. */ + acpigen_emit_namestring("^^XDCS"); + acpigen_write_byte(i); + acpigen_pop_len(); + + /* + Method(_DGS, 0) + { + Return (^^XDGS(<device number>)) + } + */ + acpigen_write_method("_DGS", 0); + acpigen_emit_byte(0xa4); /* ReturnOp. */ + acpigen_emit_namestring("^^XDGS"); + acpigen_write_byte(i); + acpigen_pop_len(); + + /* + Method(_DSS, 1) + { + ^^XDSS(0x5a, Arg0) + } + */ + acpigen_write_method("_DSS", 0); + acpigen_emit_namestring("^^XDSS"); + acpigen_write_byte(i); + acpigen_emit_byte(0x68); /* Arg0Op. */ + acpigen_pop_len(); + + acpigen_pop_len(); + } + + acpigen_pop_len(); +} |