1fc6bb9382
acpigen_write_if_lequal is used to generate ACPI code to check if two
operands are equal, where operand1 is an ACPI op and operand2 is an
integer. Update name of function to reflect this and fix code to write
integer instead of emitting byte for operand2.
TEST=Verified by disassembling SSDT on reef that ACPI code generated for
If with operand2 greater than 1 is correct.
If ((Local1 == 0x02))
{
Return (0x01)
}
Else
{
Return (Buffer (One)
{
0x00 /* . */
})
}
Change-Id: If643c078b06d4e2e5a084b51c458dd612d565acc
Reported-by: Naresh G Solanki <naresh.solanki@intel.com>
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17421
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
65 lines
2 KiB
C
65 lines
2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2016 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <arch/acpigen.h>
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#include <arch/acpigen_dsm.h>
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#include <stdlib.h>
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/* ------------------- I2C HID DSM ---------------------------- */
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#define ACPI_DSM_I2C_HID_UUID "3CDFF6F7-4267-4555-AD05-B30A3D8938DE"
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static void i2c_hid_func0_cb(void *arg)
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{
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/* ToInteger (Arg1, Local2) */
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acpigen_write_to_integer(ARG1_OP, LOCAL2_OP);
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/* If (LEqual (Local2, 0x0)) */
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acpigen_write_if_lequal_op_int(LOCAL2_OP, 0x0);
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/* Return (Buffer (One) { 0x1f }) */
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acpigen_write_return_singleton_buffer(0x1f);
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acpigen_pop_len(); /* Pop : If */
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/* Else */
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acpigen_write_else();
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/* If (LEqual (Local2, 0x1)) */
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acpigen_write_if_lequal_op_int(LOCAL2_OP, 0x1);
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/* Return (Buffer (One) { 0x3f }) */
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acpigen_write_return_singleton_buffer(0x3f);
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acpigen_pop_len(); /* Pop : If */
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/* Else */
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acpigen_write_else();
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/* Return (Buffer (One) { 0x0 }) */
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acpigen_write_return_singleton_buffer(0x0);
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acpigen_pop_len(); /* Pop : Else */
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acpigen_pop_len(); /* Pop : Else */
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}
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static void i2c_hid_func1_cb(void *arg)
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{
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struct dsm_i2c_hid_config *config = arg;
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acpigen_write_return_byte(config->hid_desc_reg_offset);
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}
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static void (*i2c_hid_callbacks[2])(void *) = {
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i2c_hid_func0_cb,
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i2c_hid_func1_cb,
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};
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void acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config *config)
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{
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acpigen_write_dsm(ACPI_DSM_I2C_HID_UUID, i2c_hid_callbacks,
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ARRAY_SIZE(i2c_hid_callbacks), config);
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}
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/* ------------------- End: I2C HID DSM ------------------------- */
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