drivers/media/pci/mgb4/mgb4_sysfs_pci.c

   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
  14 static 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, "%u\n", mgbdev->module_version & 0x0F);
  20 }
  21
  22 static 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, "%u\n", mgbdev->module_version >> 4);
  28 }
  29
  30 static 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, "%u\n", config & 0xFFFF);
  37 }
  38
  39 static 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, "%u\n", config >> 24);
  46 }
  47
  48 static 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, "%03d-%03d-%03d-%03d\n", sn >> 24, (sn >> 16) & 0xFF,
  55           (sn >> 8) & 0xFF, sn & 0xFF);
  56 }
  57
  58 static DEVICE_ATTR_RO(module_version);
  59 static DEVICE_ATTR_RO(module_type);
  60 static DEVICE_ATTR_RO(fw_version);
  61 static DEVICE_ATTR_RO(fw_type);
  62 static DEVICE_ATTR_RO(serial_number);
  63
  64 struct 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 };