ath/ath5k/sysfs.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
0003
0004 #include <linux/device.h>
0005 #include <linux/pci.h>
0006
0007 #include "ath5k.h"
0008 #include "reg.h"
0009
0010 #define SIMPLE_SHOW_STORE(name, get, set)               \
0011 static ssize_t ath5k_attr_show_##name(struct device *dev,       \
0012             struct device_attribute *attr,          \
0013             char *buf)                  \
0014 {                                   \
0015     struct ieee80211_hw *hw = dev_get_drvdata(dev);         \
0016     struct ath5k_hw *ah = hw->priv;             \
0017     return sysfs_emit(buf, "%d\n", get);            \
0018 }                                   \
0019                                     \
0020 static ssize_t ath5k_attr_store_##name(struct device *dev,      \
0021             struct device_attribute *attr,          \
0022             const char *buf, size_t count)          \
0023 {                                   \
0024     struct ieee80211_hw *hw = dev_get_drvdata(dev);         \
0025     struct ath5k_hw *ah = hw->priv;             \
0026     int val, ret;                           \
0027                                     \
0028     ret = kstrtoint(buf, 10, &val);                 \
0029     if (ret < 0)                            \
0030         return ret;                     \
0031     set(ah, val);                       \
0032     return count;                           \
0033 }                                   \
0034 static DEVICE_ATTR(name, 0644,                      \
0035            ath5k_attr_show_##name, ath5k_attr_store_##name)
0036
0037 #define SIMPLE_SHOW(name, get)                      \
0038 static ssize_t ath5k_attr_show_##name(struct device *dev,       \
0039             struct device_attribute *attr,          \
0040             char *buf)                  \
0041 {                                   \
0042     struct ieee80211_hw *hw = dev_get_drvdata(dev);         \
0043     struct ath5k_hw *ah = hw->priv;             \
0044     return sysfs_emit(buf, "%d\n", get);            \
0045 }                                   \
0046 static DEVICE_ATTR(name, 0444, ath5k_attr_show_##name, NULL)
0047
0048 /*** ANI ***/
0049
0050 SIMPLE_SHOW_STORE(ani_mode, ah->ani_state.ani_mode, ath5k_ani_init);
0051 SIMPLE_SHOW_STORE(noise_immunity_level, ah->ani_state.noise_imm_level,
0052             ath5k_ani_set_noise_immunity_level);
0053 SIMPLE_SHOW_STORE(spur_level, ah->ani_state.spur_level,
0054             ath5k_ani_set_spur_immunity_level);
0055 SIMPLE_SHOW_STORE(firstep_level, ah->ani_state.firstep_level,
0056             ath5k_ani_set_firstep_level);
0057 SIMPLE_SHOW_STORE(ofdm_weak_signal_detection, ah->ani_state.ofdm_weak_sig,
0058             ath5k_ani_set_ofdm_weak_signal_detection);
0059 SIMPLE_SHOW_STORE(cck_weak_signal_detection, ah->ani_state.cck_weak_sig,
0060             ath5k_ani_set_cck_weak_signal_detection);
0061 SIMPLE_SHOW(spur_level_max, ah->ani_state.max_spur_level);
0062
0063 static ssize_t ath5k_attr_show_noise_immunity_level_max(struct device *dev,
0064             struct device_attribute *attr,
0065             char *buf)
0066 {
0067     return sysfs_emit(buf, "%d\n", ATH5K_ANI_MAX_NOISE_IMM_LVL);
0068 }
0069 static DEVICE_ATTR(noise_immunity_level_max, 0444,
0070            ath5k_attr_show_noise_immunity_level_max, NULL);
0071
0072 static ssize_t ath5k_attr_show_firstep_level_max(struct device *dev,
0073             struct device_attribute *attr,
0074             char *buf)
0075 {
0076     return sysfs_emit(buf, "%d\n", ATH5K_ANI_MAX_FIRSTEP_LVL);
0077 }
0078 static DEVICE_ATTR(firstep_level_max, 0444,
0079            ath5k_attr_show_firstep_level_max, NULL);
0080
0081 static struct attribute *ath5k_sysfs_entries_ani[] = {
0082     &dev_attr_ani_mode.attr,
0083     &dev_attr_noise_immunity_level.attr,
0084     &dev_attr_spur_level.attr,
0085     &dev_attr_firstep_level.attr,
0086     &dev_attr_ofdm_weak_signal_detection.attr,
0087     &dev_attr_cck_weak_signal_detection.attr,
0088     &dev_attr_noise_immunity_level_max.attr,
0089     &dev_attr_spur_level_max.attr,
0090     &dev_attr_firstep_level_max.attr,
0091     NULL
0092 };
0093
0094 static struct attribute_group ath5k_attribute_group_ani = {
0095     .name = "ani",
0096     .attrs = ath5k_sysfs_entries_ani,
0097 };
0098
0099
0100 /*** register / unregister ***/
0101
0102 int
0103 ath5k_sysfs_register(struct ath5k_hw *ah)
0104 {
0105     struct device *dev = ah->dev;
0106     int err;
0107
0108     err = sysfs_create_group(&dev->kobj, &ath5k_attribute_group_ani);
0109     if (err) {
0110         ATH5K_ERR(ah, "failed to create sysfs group\n");
0111         return err;
0112     }
0113
0114     return 0;
0115 }
0116
0117 void
0118 ath5k_sysfs_unregister(struct ath5k_hw *ah)
0119 {
0120     struct device *dev = ah->dev;
0121
0122     sysfs_remove_group(&dev->kobj, &ath5k_attribute_group_ani);
0123 }