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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2021 Alibaba Group Holding Limited.
- */
- #include <linux/debugfs.h>
- #include <linux/err.h>
- #include <linux/io.h>
- #include <linux/kernel.h>
- #include <linux/module.h>
- #include <linux/of.h>
- #include <linux/of_address.h>
- #include <linux/platform_device.h>
- #include <linux/slab.h>
- #include <linux/uaccess.h>
- #include <linux/firmware/thead/ipc.h>
- #define MBOX_MAX_MSG_LEN 28
- static struct dentry *root_debugfs_dir;
- struct light_aon_msg_req_misc_set_ctrl {
- struct light_aon_rpc_msg_hdr hdr;
- u32 ctrl;
- u32 val;
- u16 resource;
- u16 reserved[7];
- } __packed __aligned(4);
- struct light_aon_msg_req_misc_get_ctrl {
- struct light_aon_rpc_msg_hdr hdr;
- u32 ctrl;
- u16 resource;
- u16 reserved[9];
- } __packed __aligned(4);
- struct light_aon_msg_resp_misc_get_ctrl {
- struct light_aon_rpc_msg_hdr hdr;
- u32 val;
- u32 reserved[5];
- } __packed __aligned(4);
- struct light_aon_device {
- struct device *dev;
- char *test_buf;
- struct light_aon_ipc *ipc_handle;
- };
- static ssize_t light_aon_test_buf_write(struct file *filp,
- const char __user *userbuf,
- size_t count, loff_t *ppos)
- {
- struct light_aon_device *tdev = filp->private_data;
- int ret;
- if (count > MBOX_MAX_MSG_LEN)
- count = MBOX_MAX_MSG_LEN;
- ret = copy_from_user(tdev->test_buf, userbuf, count);
- if (ret) {
- ret = -EFAULT;
- goto out;
- }
- ret = light_aon_misc_set_control(tdev->ipc_handle, 0x1, 0x2, 0x3);
- ret |= light_aon_misc_set_control(tdev->ipc_handle, 0x11, 0x12, 0x13);
- ret |= light_aon_misc_set_control(tdev->ipc_handle, 0x21, 0x22, 0x23);
- ret |= light_aon_misc_set_control(tdev->ipc_handle, 0x31, 0x32, 0x33);
- if (ret)
- dev_err(tdev->dev, "failed to set control\n");
- //print_hex_dump(KERN_INFO, __func__, DUMP_PREFIX_NONE, 16, 1, tdev->test_buf, MBOX_MAX_MSG_LEN, true);
- out:
- return ret < 0 ? ret : count;
- }
- static ssize_t light_aon_test_buf_read(struct file *filp,
- char __user *userbuf,
- size_t count, loff_t *ppos)
- {
- struct light_aon_device *tdev = filp->private_data;
- //print_hex_dump(KERN_INFO, __func__, DUMP_PREFIX_NONE, 16, 1, tdev->test_buf, MBOX_MAX_MSG_LEN, true);
- memset(tdev->test_buf, 0, MBOX_MAX_MSG_LEN);
- return MBOX_MAX_MSG_LEN;
- }
- static const struct file_operations light_aon_test_buf_ops = {
- .write = light_aon_test_buf_write,
- .read = light_aon_test_buf_read,
- .open = simple_open,
- .llseek = generic_file_llseek,
- };
- static int light_aon_add_debugfs(struct platform_device *pdev, struct light_aon_device *tdev)
- {
- root_debugfs_dir = debugfs_create_dir("light_aon",NULL);
- if (!root_debugfs_dir) {
- dev_err(&pdev->dev, "Failed to create light_aon_test debugfs\n");
- return -EINVAL;
- }
- debugfs_create_file("test", 0600, root_debugfs_dir, tdev, &light_aon_test_buf_ops);
- return 0;
- }
- static int light_aon_probe(struct platform_device *pdev)
- {
- struct light_aon_device *tdev;
- int ret;
- tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL);
- if (!tdev)
- return -ENOMEM;
- tdev->dev = &pdev->dev;
- platform_set_drvdata(pdev, tdev);
- tdev->test_buf = devm_kzalloc(&pdev->dev, MBOX_MAX_MSG_LEN, GFP_KERNEL);
- if (!tdev->test_buf)
- return -ENOMEM;
- ret = light_aon_get_handle(&(tdev->ipc_handle));
- if (ret) {
- dev_err(&pdev->dev, "failed to get ipc_handle\n");
- return ret;
- }
- ret = light_aon_add_debugfs(pdev, tdev);
- if (ret)
- return ret;
- dev_info(&pdev->dev, "Successfully registered\n");
- return 0;
- }
- static int light_aon_remove(struct platform_device *pdev)
- {
- debugfs_remove_recursive(root_debugfs_dir);
- return 0;
- }
- static const struct of_device_id light_aon_match[] = {
- { .compatible = "thead,light-aon-test" },
- {},
- };
- static struct platform_driver light_aon_driver = {
- .driver = {
- .name = "thead,light-aon-test",
- .of_match_table = light_aon_match,
- },
- .probe = light_aon_probe,
- .remove = light_aon_remove,
- };
- module_platform_driver(light_aon_driver);
- MODULE_AUTHOR("fugang.duan <duanfugang.dfg@linux.alibaba.com>");
- MODULE_DESCRIPTION("Thead Light firmware protocol test driver");
- MODULE_LICENSE("GPL v2");
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