1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2021-2022 Digiteq Automotive
4 * author: Martin Tuma <martin.tuma@digiteqautomotive.com>
5 *
6 * This module handles all the sysfs info/configuration that is related to the
7 * PCI card device.
8 */
9
10#include <linux/device.h>
11#include "mgb4_core.h"
12#include "mgb4_sysfs.h"
13
14static ssize_t module_version_show(struct device *dev,
15 struct device_attribute *attr, char *buf)
16{
17 struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
18
19 return sprintf(buf, fmt: "%u\n", mgbdev->module_version & 0x0F);
20}
21
22static ssize_t module_type_show(struct device *dev,
23 struct device_attribute *attr, char *buf)
24{
25 struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
26
27 return sprintf(buf, fmt: "%u\n", mgbdev->module_version >> 4);
28}
29
30static ssize_t fw_version_show(struct device *dev,
31 struct device_attribute *attr, char *buf)
32{
33 struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
34 u32 config = mgb4_read_reg(&mgbdev->video, 0xC4);
35
36 return sprintf(buf, fmt: "%u\n", config & 0xFFFF);
37}
38
39static ssize_t fw_type_show(struct device *dev,
40 struct device_attribute *attr, char *buf)
41{
42 struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
43 u32 config = mgb4_read_reg(&mgbdev->video, 0xC4);
44
45 return sprintf(buf, fmt: "%u\n", config >> 24);
46}
47
48static ssize_t serial_number_show(struct device *dev,
49 struct device_attribute *attr, char *buf)
50{
51 struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
52 u32 sn = mgbdev->serial_number;
53
54 return sprintf(buf, fmt: "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF,
55 (sn >> 8) & 0xFF, sn & 0xFF);
56}
57
58static DEVICE_ATTR_RO(module_version);
59static DEVICE_ATTR_RO(module_type);
60static DEVICE_ATTR_RO(fw_version);
61static DEVICE_ATTR_RO(fw_type);
62static DEVICE_ATTR_RO(serial_number);
63
64struct attribute *mgb4_pci_attrs[] = {
65 &dev_attr_module_type.attr,
66 &dev_attr_module_version.attr,
67 &dev_attr_fw_type.attr,
68 &dev_attr_fw_version.attr,
69 &dev_attr_serial_number.attr,
70 NULL
71};
72

source code of linux/drivers/media/pci/mgb4/mgb4_sysfs_pci.c