69e9e715a6
Name i2c device structure based on that in devicetree.cb Now log looks like: I2C: 01:0a (WCOM Touchscreen) I2C: 03:13 (Realtek RT5663) I2C: 03:39 (SSM4567 Right Speaker Amp) I2C: 03:3a (SSM4567 Left Speaker Amp) BUG=None BRANCH=None TEST=Build & boot Soraka Change-Id: I5dbb66ab705cd8601b8b1dc94bc6ee9f181b7be2 Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com> Reviewed-on: https://review.coreboot.org/26830 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
100 lines
2.6 KiB
C
100 lines
2.6 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/acpi_device.h>
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#include <arch/acpigen.h>
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#include <console/console.h>
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#include <device/i2c_simple.h>
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#include <device/device.h>
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#include <device/path.h>
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#include <stdint.h>
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#include <string.h>
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#include "tpm.h"
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#include "chip.h"
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static void i2c_tpm_fill_ssdt(struct device *dev)
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{
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struct drivers_i2c_tpm_config *config = dev->chip_info;
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const char *scope = acpi_device_scope(dev);
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struct acpi_i2c i2c = {
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.address = dev->path.i2c.device,
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.mode_10bit = dev->path.i2c.mode_10bit,
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.speed = config->speed ? : I2C_SPEED_FAST,
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.resource = scope,
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};
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if (!dev->enabled || !scope)
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return;
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if (!config->hid) {
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printk(BIOS_ERR, "%s: ERROR: HID required\n", dev_path(dev));
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return;
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}
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/* Device */
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acpigen_write_scope(scope);
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acpigen_write_device(acpi_device_name(dev));
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acpigen_write_name_string("_HID", config->hid);
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acpigen_write_name_integer("_UID", config->uid);
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acpigen_write_name_string("_DDN", dev->chip_ops->name);
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acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
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/* Resources */
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acpigen_write_name("_CRS");
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acpigen_write_resourcetemplate_header();
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acpi_device_write_i2c(&i2c);
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if (config->irq_gpio.pin_count)
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acpi_device_write_gpio(&config->irq_gpio);
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else
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acpi_device_write_interrupt(&config->irq);
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acpigen_write_resourcetemplate_footer();
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acpigen_pop_len(); /* Device */
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acpigen_pop_len(); /* Scope */
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printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev),
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dev->chip_ops->name, dev_path(dev));
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}
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static const char *i2c_tpm_acpi_name(const struct device *dev)
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{
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return "TPMI";
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}
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static struct device_operations i2c_tpm_ops = {
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.read_resources = DEVICE_NOOP,
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.set_resources = DEVICE_NOOP,
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.enable_resources = DEVICE_NOOP,
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.acpi_name = &i2c_tpm_acpi_name,
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.acpi_fill_ssdt_generator = &i2c_tpm_fill_ssdt,
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};
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static void i2c_tpm_enable(struct device *dev)
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{
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struct drivers_i2c_tpm_config *config = dev->chip_info;
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dev->ops = &i2c_tpm_ops;
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if (config && config->desc) {
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dev->name = config->desc;
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}
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}
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struct chip_operations drivers_i2c_tpm_ops = {
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CHIP_NAME("I2C TPM")
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.enable_dev = &i2c_tpm_enable
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};
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