From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/platform/chrome/cros_ec_vbc.c | 97 +++++++++++++++++++++++++++---------------------
1 files changed, 54 insertions(+), 43 deletions(-)
diff --git a/kernel/drivers/platform/chrome/cros_ec_vbc.c b/kernel/drivers/platform/chrome/cros_ec_vbc.c
index 5356f26..f3a70a3 100644
--- a/kernel/drivers/platform/chrome/cros_ec_vbc.c
+++ b/kernel/drivers/platform/chrome/cros_ec_vbc.c
@@ -1,34 +1,23 @@
-/*
- * cros_ec_vbc - Expose the vboot context nvram to userspace
- *
- * Copyright (C) 2015 Collabora Ltd.
- *
- * based on vendor driver,
- *
- * Copyright (C) 2012 The Chromium OS Authors
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
+// SPDX-License-Identifier: GPL-2.0+
+// Expose the vboot context nvram to userspace
+//
+// Copyright (C) 2012 Google, Inc.
+// Copyright (C) 2015 Collabora Ltd.
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/mfd/cros_ec.h>
-#include <linux/mfd/cros_ec_commands.h>
+#include <linux/module.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
#include <linux/slab.h>
+
+#define DRV_NAME "cros-ec-vbc"
static ssize_t vboot_context_read(struct file *filp, struct kobject *kobj,
struct bin_attribute *att, char *buf,
loff_t pos, size_t count)
{
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev = kobj_to_dev(kobj);
struct cros_ec_dev *ec = to_cros_ec_dev(dev);
struct cros_ec_device *ecdev = ec->ec_dev;
struct ec_params_vbnvcontext *params;
@@ -51,7 +40,7 @@
msg->outsize = para_sz;
msg->insize = resp_sz;
- err = cros_ec_cmd_xfer(ecdev, msg);
+ err = cros_ec_cmd_xfer_status(ecdev, msg);
if (err < 0) {
dev_err(dev, "Error sending read request: %d\n", err);
kfree(msg);
@@ -68,7 +57,7 @@
struct bin_attribute *attr, char *buf,
loff_t pos, size_t count)
{
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev = kobj_to_dev(kobj);
struct cros_ec_dev *ec = to_cros_ec_dev(dev);
struct cros_ec_device *ecdev = ec->ec_dev;
struct ec_params_vbnvcontext *params;
@@ -94,7 +83,7 @@
msg->outsize = para_sz;
msg->insize = 0;
- err = cros_ec_cmd_xfer(ecdev, msg);
+ err = cros_ec_cmd_xfer_status(ecdev, msg);
if (err < 0) {
dev_err(dev, "Error sending write request: %d\n", err);
kfree(msg);
@@ -105,21 +94,6 @@
return data_sz;
}
-static umode_t cros_ec_vbc_is_visible(struct kobject *kobj,
- struct bin_attribute *a, int n)
-{
- struct device *dev = container_of(kobj, struct device, kobj);
- struct cros_ec_dev *ec = to_cros_ec_dev(dev);
- struct device_node *np = ec->ec_dev->dev->of_node;
-
- if (IS_ENABLED(CONFIG_OF) && np) {
- if (of_property_read_bool(np, "google,has-vbc-nvram"))
- return a->attr.mode;
- }
-
- return 0;
-}
-
static BIN_ATTR_RW(vboot_context, 16);
static struct bin_attribute *cros_ec_vbc_bin_attrs[] = {
@@ -127,9 +101,46 @@
NULL
};
-struct attribute_group cros_ec_vbc_attr_group = {
+static struct attribute_group cros_ec_vbc_attr_group = {
.name = "vbc",
.bin_attrs = cros_ec_vbc_bin_attrs,
- .is_bin_visible = cros_ec_vbc_is_visible,
};
-EXPORT_SYMBOL(cros_ec_vbc_attr_group);
+
+static int cros_ec_vbc_probe(struct platform_device *pd)
+{
+ struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
+ struct device *dev = &pd->dev;
+ int ret;
+
+ ret = sysfs_create_group(&ec_dev->class_dev.kobj,
+ &cros_ec_vbc_attr_group);
+ if (ret < 0)
+ dev_err(dev, "failed to create %s attributes. err=%d\n",
+ cros_ec_vbc_attr_group.name, ret);
+
+ return ret;
+}
+
+static int cros_ec_vbc_remove(struct platform_device *pd)
+{
+ struct cros_ec_dev *ec_dev = dev_get_drvdata(pd->dev.parent);
+
+ sysfs_remove_group(&ec_dev->class_dev.kobj,
+ &cros_ec_vbc_attr_group);
+
+ return 0;
+}
+
+static struct platform_driver cros_ec_vbc_driver = {
+ .driver = {
+ .name = DRV_NAME,
+ },
+ .probe = cros_ec_vbc_probe,
+ .remove = cros_ec_vbc_remove,
+};
+
+module_platform_driver(cros_ec_vbc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Expose the vboot context nvram to userspace");
+MODULE_ALIAS("platform:" DRV_NAME);
--
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