drivers/net/wireless/ath/ath5k/sysfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   3
   4 #include <linux/device.h>
   5 #include <linux/pci.h>
   6
   7 #include "ath5k.h"
   8 #include "reg.h"
   9
  10 #define SIMPLE_SHOW_STORE(name, get, set)                               \
  11 static ssize_t ath5k_attr_show_##name(struct device *dev,               \
  12                         struct device_attribute *attr,                  \
  13                         char *buf)                                      \
  14 {                                                                       \
  15         struct ieee80211_hw *hw = dev_get_drvdata(dev);                 \
  16         struct ath5k_hw *ah = hw->priv;                         \
  17         return snprintf(buf, PAGE_SIZE, "%d\n", get);                   \
  18 }                                                                       \
  19                                                                         \
  20 static ssize_t ath5k_attr_store_##name(struct device *dev,              \
  21                         struct device_attribute *attr,                  \
  22                         const char *buf, size_t count)                  \
  23 {                                                                       \
  24         struct ieee80211_hw *hw = dev_get_drvdata(dev);                 \
  25         struct ath5k_hw *ah = hw->priv;                         \
  26         int val, ret;                                                   \
  27                                                                         \
  28         ret = kstrtoint(buf, 10, &val);                                 \
  29         if (ret < 0)                                                    \
  30                 return ret;                                             \
  31         set(ah, val);                                           \
  32         return count;                                                   \
  33 }                                                                       \
  34 static DEVICE_ATTR(name, 0644,                                          \
  35                    ath5k_attr_show_##name, ath5k_attr_store_##name)
  36
  37 #define SIMPLE_SHOW(name, get)                                          \
  38 static ssize_t ath5k_attr_show_##name(struct device *dev,               \
  39                         struct device_attribute *attr,                  \
  40                         char *buf)                                      \
  41 {                                                                       \
  42         struct ieee80211_hw *hw = dev_get_drvdata(dev);                 \
  43         struct ath5k_hw *ah = hw->priv;                         \
  44         return snprintf(buf, PAGE_SIZE, "%d\n", get);                   \
  45 }                                                                       \
  46 static DEVICE_ATTR(name, 0444, ath5k_attr_show_##name, NULL)
  47
  48 /*** ANI ***/
  49
  50 SIMPLE_SHOW_STORE(ani_mode, ah->ani_state.ani_mode, ath5k_ani_init);
  51 SIMPLE_SHOW_STORE(noise_immunity_level, ah->ani_state.noise_imm_level,
  52                         ath5k_ani_set_noise_immunity_level);
  53 SIMPLE_SHOW_STORE(spur_level, ah->ani_state.spur_level,
  54                         ath5k_ani_set_spur_immunity_level);
  55 SIMPLE_SHOW_STORE(firstep_level, ah->ani_state.firstep_level,
  56                         ath5k_ani_set_firstep_level);
  57 SIMPLE_SHOW_STORE(ofdm_weak_signal_detection, ah->ani_state.ofdm_weak_sig,
  58                         ath5k_ani_set_ofdm_weak_signal_detection);
  59 SIMPLE_SHOW_STORE(cck_weak_signal_detection, ah->ani_state.cck_weak_sig,
  60                         ath5k_ani_set_cck_weak_signal_detection);
  61 SIMPLE_SHOW(spur_level_max, ah->ani_state.max_spur_level);
  62
  63 static ssize_t ath5k_attr_show_noise_immunity_level_max(struct device *dev,
  64                         struct device_attribute *attr,
  65                         char *buf)
  66 {
  67         return snprintf(buf, PAGE_SIZE, "%d\n", ATH5K_ANI_MAX_NOISE_IMM_LVL);
  68 }
  69 static DEVICE_ATTR(noise_immunity_level_max, 0444,
  70                    ath5k_attr_show_noise_immunity_level_max, NULL);
  71
  72 static ssize_t ath5k_attr_show_firstep_level_max(struct device *dev,
  73                         struct device_attribute *attr,
  74                         char *buf)
  75 {
  76         return snprintf(buf, PAGE_SIZE, "%d\n", ATH5K_ANI_MAX_FIRSTEP_LVL);
  77 }
  78 static DEVICE_ATTR(firstep_level_max, 0444,
  79                    ath5k_attr_show_firstep_level_max, NULL);
  80
  81 static struct attribute *ath5k_sysfs_entries_ani[] = {
  82         &dev_attr_ani_mode.attr,
  83         &dev_attr_noise_immunity_level.attr,
  84         &dev_attr_spur_level.attr,
  85         &dev_attr_firstep_level.attr,
  86         &dev_attr_ofdm_weak_signal_detection.attr,
  87         &dev_attr_cck_weak_signal_detection.attr,
  88         &dev_attr_noise_immunity_level_max.attr,
  89         &dev_attr_spur_level_max.attr,
  90         &dev_attr_firstep_level_max.attr,
  91         NULL
  92 };
  93
  94 static struct attribute_group ath5k_attribute_group_ani = {
  95         .name = "ani",
  96         .attrs = ath5k_sysfs_entries_ani,
  97 };
  98
  99
 100 /*** register / unregister ***/
 101
 102 int
 103 ath5k_sysfs_register(struct ath5k_hw *ah)
 104 {
 105         struct device *dev = ah->dev;
 106         int err;
 107
 108         err = sysfs_create_group(&dev->kobj, &ath5k_attribute_group_ani);
 109         if (err) {
 110                 ATH5K_ERR(ah, "failed to create sysfs group\n");
 111                 return err;
 112         }
 113
 114         return 0;
 115 }
 116
 117 void
 118 ath5k_sysfs_unregister(struct ath5k_hw *ah)
 119 {
 120         struct device *dev = ah->dev;
 121
 122         sysfs_remove_group(&dev->kobj, &ath5k_attribute_group_ani);
 123 }