linux/drivers/net/wireless/ath/ath5k/sysfs.c
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   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)                               \
  11static 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                                                                        \
  20static 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}                                                                       \
  34static DEVICE_ATTR(name, 0644,                                          \
  35                   ath5k_attr_show_##name, ath5k_attr_store_##name)
  36
  37#define SIMPLE_SHOW(name, get)                                          \
  38static 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}                                                                       \
  46static DEVICE_ATTR(name, 0444, ath5k_attr_show_##name, NULL)
  47
  48/*** ANI ***/
  49
  50SIMPLE_SHOW_STORE(ani_mode, ah->ani_state.ani_mode, ath5k_ani_init);
  51SIMPLE_SHOW_STORE(noise_immunity_level, ah->ani_state.noise_imm_level,
  52                        ath5k_ani_set_noise_immunity_level);
  53SIMPLE_SHOW_STORE(spur_level, ah->ani_state.spur_level,
  54                        ath5k_ani_set_spur_immunity_level);
  55SIMPLE_SHOW_STORE(firstep_level, ah->ani_state.firstep_level,
  56                        ath5k_ani_set_firstep_level);
  57SIMPLE_SHOW_STORE(ofdm_weak_signal_detection, ah->ani_state.ofdm_weak_sig,
  58                        ath5k_ani_set_ofdm_weak_signal_detection);
  59SIMPLE_SHOW_STORE(cck_weak_signal_detection, ah->ani_state.cck_weak_sig,
  60                        ath5k_ani_set_cck_weak_signal_detection);
  61SIMPLE_SHOW(spur_level_max, ah->ani_state.max_spur_level);
  62
  63static 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}
  69static DEVICE_ATTR(noise_immunity_level_max, 0444,
  70                   ath5k_attr_show_noise_immunity_level_max, NULL);
  71
  72static 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}
  78static DEVICE_ATTR(firstep_level_max, 0444,
  79                   ath5k_attr_show_firstep_level_max, NULL);
  80
  81static 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
  94static struct attribute_group ath5k_attribute_group_ani = {
  95        .name = "ani",
  96        .attrs = ath5k_sysfs_entries_ani,
  97};
  98
  99
 100/*** register / unregister ***/
 101
 102int
 103ath5k_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
 117void
 118ath5k_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}
 124