76cedd2c29
This change moves all ACPI table support in coreboot currently living under arch/x86 into common code to make it architecture independent. ACPI table generation is not really tied to any architecture and hence it makes sense to move this to its own directory. In order to make it easier to review, this change is being split into multiple CLs. This is change 3/5 which basically is generated by running the following command: $ git grep -iIl "arch/acpi" | xargs sed -i 's/arch\/acpi/acpi\/acpi/g' BUG=b:155428745 Change-Id: I16b1c45d954d6440fb9db1d3710063a47b582eae Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40938 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
136 lines
2.6 KiB
C
136 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/* This file is part of the coreboot project. */
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#include <acpi/acpi.h>
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#include <acpi/acpigen.h>
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#include <string.h>
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#include "i915.h"
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void
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drivers_intel_gma_displays_ssdt_generate(const struct i915_gpu_controller_info *conf)
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{
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size_t i;
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const char *names[] = { "UNK", "VGA", "TV", "DVI", "LCD" };
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int counters[ARRAY_SIZE(names)] = { 0 };
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if (!conf->ndid)
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return;
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acpigen_write_scope("\\_SB.PCI0.GFX0");
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/*
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Method (_DOD, 0)
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{
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Return (Package() {
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0x5a5a5a5a,
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0x5a5a5a5a,
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0x5a5a5a5a
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})
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}
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*/
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acpigen_write_method("_DOD", 0);
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acpigen_emit_byte(RETURN_OP);
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acpigen_write_package(conf->ndid);
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for (i = 0; i < conf->ndid; i++) {
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acpigen_write_dword (conf->did[i] | 0x80010000);
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}
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acpigen_pop_len(); /* End Package. */
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acpigen_pop_len(); /* End Method. */
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for (i = 0; i < conf->ndid; i++) {
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char name[5];
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int kind;
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kind = (conf->did[i] >> 8) & 0xf;
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if (kind >= ARRAY_SIZE(names)) {
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kind = 0;
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}
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snprintf(name, sizeof(name), "%s%d", names[kind], counters[kind]);
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counters[kind]++;
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/* Device (LCD0) */
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acpigen_write_device(name);
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/* Name (_ADR, 0x0410) */
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acpigen_write_name_dword("_ADR", conf->did[i] & 0xffff);
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/* ACPI brightness for LCD. */
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if (kind == 4) {
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/*
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Method (_BCL, 0, NotSerialized)
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{
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Return (^^XBCL())
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}
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*/
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acpigen_write_method("_BCL", 0);
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acpigen_emit_byte(RETURN_OP);
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acpigen_emit_namestring("^^XBCL");
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acpigen_pop_len();
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/*
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Method (_BCM, 1, NotSerialized)
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{
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^^XBCM(Arg0)
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}
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*/
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acpigen_write_method("_BCM", 1);
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acpigen_emit_namestring("^^XBCM");
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acpigen_emit_byte(ARG0_OP);
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acpigen_pop_len();
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/*
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Method (_BQC, 0, NotSerialized)
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{
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Return (^^XBQC())
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}
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*/
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acpigen_write_method("_BQC", 0);
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acpigen_emit_byte(RETURN_OP);
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acpigen_emit_namestring("^^XBQC");
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acpigen_pop_len();
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}
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/*
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* _DCS, _DGS and _DSS are required by specification. However,
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* we never implemented them properly, and no OS driver com-
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* plained yet. So we stub them out and keep the traditional
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* behavior in case an OS driver checks for their existence.
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*/
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/*
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Method(_DCS, 0)
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{
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Return (0x1d)
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}
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*/
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acpigen_write_method("_DCS", 0);
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acpigen_write_return_integer(0x1d);
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acpigen_pop_len();
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/*
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Method(_DGS, 0)
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{
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Return (0)
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}
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*/
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acpigen_write_method("_DGS", 0);
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acpigen_write_return_integer(0);
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acpigen_pop_len();
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/*
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Method(_DSS, 1)
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{
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}
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*/
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acpigen_write_method("_DSS", 1);
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acpigen_pop_len();
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acpigen_pop_len(); /* End Device. */
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}
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acpigen_pop_len(); /* End Scope. */
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}
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