From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/drivers/soc/qcom/rmtfs_mem.c | 63 +++++++++++++++++++++++--------
1 files changed, 46 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/soc/qcom/rmtfs_mem.c b/kernel/drivers/soc/qcom/rmtfs_mem.c
index 97bb598..0feaae3 100644
--- a/kernel/drivers/soc/qcom/rmtfs_mem.c
+++ b/kernel/drivers/soc/qcom/rmtfs_mem.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017 Linaro Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * 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.
*/
#include <linux/kernel.h>
@@ -45,9 +37,9 @@
struct device_attribute *attr,
char *buf);
-static DEVICE_ATTR(phys_addr, 0400, qcom_rmtfs_mem_show, NULL);
-static DEVICE_ATTR(size, 0400, qcom_rmtfs_mem_show, NULL);
-static DEVICE_ATTR(client_id, 0400, qcom_rmtfs_mem_show, NULL);
+static DEVICE_ATTR(phys_addr, 0444, qcom_rmtfs_mem_show, NULL);
+static DEVICE_ATTR(size, 0444, qcom_rmtfs_mem_show, NULL);
+static DEVICE_ATTR(client_id, 0444, qcom_rmtfs_mem_show, NULL);
static ssize_t qcom_rmtfs_mem_show(struct device *dev,
struct device_attribute *attr,
@@ -132,6 +124,31 @@
return 0;
}
+static struct class rmtfs_class = {
+ .owner = THIS_MODULE,
+ .name = "rmtfs",
+};
+
+static int qcom_rmtfs_mem_mmap(struct file *filep, struct vm_area_struct *vma)
+{
+ struct qcom_rmtfs_mem *rmtfs_mem = filep->private_data;
+
+ if (vma->vm_end - vma->vm_start > rmtfs_mem->size) {
+ dev_dbg(&rmtfs_mem->dev,
+ "vm_end[%lu] - vm_start[%lu] [%lu] > mem->size[%pa]\n",
+ vma->vm_end, vma->vm_start,
+ (vma->vm_end - vma->vm_start), &rmtfs_mem->size);
+ return -EINVAL;
+ }
+
+ vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ return remap_pfn_range(vma,
+ vma->vm_start,
+ rmtfs_mem->addr >> PAGE_SHIFT,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot);
+}
+
static const struct file_operations qcom_rmtfs_mem_fops = {
.owner = THIS_MODULE,
.open = qcom_rmtfs_mem_open,
@@ -139,6 +156,7 @@
.write = qcom_rmtfs_mem_write,
.release = qcom_rmtfs_mem_release,
.llseek = default_llseek,
+ .mmap = qcom_rmtfs_mem_mmap,
};
static void qcom_rmtfs_mem_release_device(struct device *dev)
@@ -199,6 +217,7 @@
dev_set_name(&rmtfs_mem->dev, "qcom_rmtfs_mem%d", client_id);
rmtfs_mem->dev.id = client_id;
+ rmtfs_mem->dev.class = &rmtfs_class;
rmtfs_mem->dev.devt = MKDEV(MAJOR(qcom_rmtfs_mem_major), client_id);
ret = cdev_device_add(&rmtfs_mem->cdev, &rmtfs_mem->dev);
@@ -277,32 +296,42 @@
},
};
-static int qcom_rmtfs_mem_init(void)
+static int __init qcom_rmtfs_mem_init(void)
{
int ret;
+
+ ret = class_register(&rmtfs_class);
+ if (ret)
+ return ret;
ret = alloc_chrdev_region(&qcom_rmtfs_mem_major, 0,
QCOM_RMTFS_MEM_DEV_MAX, "qcom_rmtfs_mem");
if (ret < 0) {
pr_err("qcom_rmtfs_mem: failed to allocate char dev region\n");
- return ret;
+ goto unregister_class;
}
ret = platform_driver_register(&qcom_rmtfs_mem_driver);
if (ret < 0) {
pr_err("qcom_rmtfs_mem: failed to register rmtfs_mem driver\n");
- unregister_chrdev_region(qcom_rmtfs_mem_major,
- QCOM_RMTFS_MEM_DEV_MAX);
+ goto unregister_chrdev;
}
+ return 0;
+
+unregister_chrdev:
+ unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX);
+unregister_class:
+ class_unregister(&rmtfs_class);
return ret;
}
module_init(qcom_rmtfs_mem_init);
-static void qcom_rmtfs_mem_exit(void)
+static void __exit qcom_rmtfs_mem_exit(void)
{
platform_driver_unregister(&qcom_rmtfs_mem_driver);
unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX);
+ class_unregister(&rmtfs_class);
}
module_exit(qcom_rmtfs_mem_exit);
--
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