package/mac80211/patches/540-ath9k_extra_leds.patch

   1 --- a/drivers/net/wireless/ath/ath9k/ath9k.h
   2 +++ b/drivers/net/wireless/ath/ath9k/ath9k.h
   3 @@ -507,6 +507,9 @@ static inline u16 ath9k_btcoex_aggr_limi
   4  #ifdef CONFIG_MAC80211_LEDS
   5  void ath_init_leds(struct ath_softc *sc);
   6  void ath_deinit_leds(struct ath_softc *sc);
   7 +int ath_create_gpio_led(struct ath_softc *sc, int gpio, const char *name,
   8 +                        const char *trigger, bool active_low);
   9 +
  10  #else
  11  static inline void ath_init_leds(struct ath_softc *sc)
  12  {
  13 @@ -620,6 +623,13 @@ struct ath9k_vif_iter_data {
  14         int nadhocs;   /* number of adhoc vifs */
  15  };
  16
  17 +struct ath_led {
  18 +       struct list_head list;
  19 +       struct ath_softc *sc;
  20 +       const struct gpio_led *gpio;
  21 +       struct led_classdev cdev;
  22 +};
  23 +
  24  struct ath_softc {
  25         struct ieee80211_hw *hw;
  26         struct device *dev;
  27 @@ -661,9 +671,8 @@ struct ath_softc {
  28         struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
  29
  30  #ifdef CONFIG_MAC80211_LEDS
  31 -       bool led_registered;
  32 -       char led_name[32];
  33 -       struct led_classdev led_cdev;
  34 +       const char *led_default_trigger;
  35 +       struct list_head leds;
  36  #endif
  37
  38         struct ath9k_hw_cal_data caldata;
  39 --- a/drivers/net/wireless/ath/ath9k/gpio.c
  40 +++ b/drivers/net/wireless/ath/ath9k/gpio.c
  41 @@ -24,22 +24,89 @@
  42  static void ath_led_brightness(struct led_classdev *led_cdev,
  43                                enum led_brightness brightness)
  44  {
  45 -       struct ath_softc *sc = container_of(led_cdev, struct ath_softc, led_cdev);
  46 -       ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, (brightness == LED_OFF));
  47 +       struct ath_led *led = container_of(led_cdev, struct ath_led, cdev);
  48 +       struct ath_softc *sc = led->sc;
  49 +
  50 +       ath9k_ps_wakeup(sc);
  51 +       ath9k_hw_set_gpio(sc->sc_ah, led->gpio->gpio,
  52 +                         (brightness != LED_OFF) ^ led->gpio->active_low);
  53 +       ath9k_ps_restore(sc);
  54 +}
  55 +
  56 +static int ath_add_led(struct ath_softc *sc, struct ath_led *led)
  57 +{
  58 +       const struct gpio_led *gpio = led->gpio;
  59 +       int ret;
  60 +
  61 +       led->cdev.name = gpio->name;
  62 +       led->cdev.default_trigger = gpio->default_trigger;
  63 +       led->cdev.brightness_set = ath_led_brightness;
  64 +
  65 +       ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->cdev);
  66 +       if (ret < 0)
  67 +               return ret;
  68 +
  69 +       led->sc = sc;
  70 +       list_add(&led->list, &sc->leds);
  71 +
  72 +       /* Configure gpio for output */
  73 +       ath9k_hw_cfg_output(sc->sc_ah, gpio->gpio,
  74 +                           AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
  75 +
  76 +       /* LED off */
  77 +       ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
  78 +
  79 +       return 0;
  80 +}
  81 +
  82 +int ath_create_gpio_led(struct ath_softc *sc, int gpio_num, const char *name,
  83 +                       const char *trigger, bool active_low)
  84 +{
  85 +       struct ath_led *led;
  86 +       struct gpio_led *gpio;
  87 +       char *_name;
  88 +       int ret;
  89 +
  90 +       led = kzalloc(sizeof(*led) + sizeof(*gpio) + strlen(name) + 1,
  91 +                     GFP_KERNEL);
  92 +       if (!led)
  93 +               return -ENOMEM;
  94 +
  95 +       led->gpio = gpio = (struct gpio_led *) (led + 1);
  96 +       _name = (char *) (led->gpio + 1);
  97 +
  98 +       strcpy(_name, name);
  99 +       gpio->name = _name;
 100 +       gpio->gpio = gpio_num;
 101 +       gpio->active_low = active_low;
 102 +       gpio->default_trigger = trigger;
 103 +
 104 +       ret = ath_add_led(sc, led);
 105 +       if (unlikely(ret < 0))
 106 +               kfree(led);
 107 +
 108 +       return ret;
 109  }
 110
 111  void ath_deinit_leds(struct ath_softc *sc)
 112  {
 113 -       if (!sc->led_registered)
 114 -               return;
 115 +       struct ath_led *led;
 116
 117 -       ath_led_brightness(&sc->led_cdev, LED_OFF);
 118 -       led_classdev_unregister(&sc->led_cdev);
 119 +       while (!list_empty(&sc->leds)) {
 120 +               led = list_first_entry(&sc->leds, struct ath_led, list);
 121 +               list_del(&led->list);
 122 +               ath_led_brightness(&led->cdev, LED_OFF);
 123 +               led_classdev_unregister(&led->cdev);
 124 +               kfree(led);
 125 +       }
 126  }
 127
 128  void ath_init_leds(struct ath_softc *sc)
 129  {
 130 -       int ret;
 131 +       char led_name[32];
 132 +       const char *trigger;
 133 +
 134 +       INIT_LIST_HEAD(&sc->leds);
 135
 136         if (AR_SREV_9100(sc->sc_ah))
 137                 return;
 138 @@ -57,26 +124,15 @@ void ath_init_leds(struct ath_softc *sc)
 139                         sc->sc_ah->led_pin = ATH_LED_PIN_DEF;
 140         }
 141
 142 -       /* Configure gpio 1 for output */
 143 -       ath9k_hw_cfg_output(sc->sc_ah, sc->sc_ah->led_pin,
 144 -                           AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
 145 -       /* LED off, active low */
 146 -       ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, 1);
 147 -
 148 -       if (!led_blink)
 149 -               sc->led_cdev.default_trigger =
 150 -                       ieee80211_get_radio_led_name(sc->hw);
 151 -
 152 -       snprintf(sc->led_name, sizeof(sc->led_name),
 153 -               "ath9k-%s", wiphy_name(sc->hw->wiphy));
 154 -       sc->led_cdev.name = sc->led_name;
 155 -       sc->led_cdev.brightness_set = ath_led_brightness;
 156 +       snprintf(led_name, sizeof(led_name), "ath9k-%s",
 157 +                wiphy_name(sc->hw->wiphy));
 158
 159 -       ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &sc->led_cdev);
 160 -       if (ret < 0)
 161 -               return;
 162 +       if (led_blink)
 163 +               trigger = sc->led_default_trigger;
 164 +       else
 165 +               trigger = ieee80211_get_radio_led_name(sc->hw);
 166
 167 -       sc->led_registered = true;
 168 +       ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger, 1);
 169  }
 170  #endif
 171
 172 --- a/drivers/net/wireless/ath/ath9k/init.c
 173 +++ b/drivers/net/wireless/ath/ath9k/init.c
 174 @@ -778,7 +778,7 @@ int ath9k_init_device(u16 devid, struct
 175
 176  #ifdef CONFIG_MAC80211_LEDS
 177         /* must be initialized before ieee80211_register_hw */
 178 -       sc->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
 179 +       sc->led_default_trigger = ieee80211_create_tpt_led_trigger(sc->hw,
 180                 IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_tpt_blink,
 181                 ARRAY_SIZE(ath9k_tpt_blink));
 182  #endif
 183 --- a/drivers/net/wireless/ath/ath9k/debug.c
 184 +++ b/drivers/net/wireless/ath/ath9k/debug.c
 185 @@ -1267,6 +1267,61 @@ static const struct file_operations fops
 186         .llseek = default_llseek,
 187  };
 188
 189 +#ifdef CONFIG_MAC80211_LEDS
 190 +
 191 +static ssize_t write_file_gpio_led(struct file *file, const char __user *ubuf,
 192 +                                  size_t count, loff_t *ppos)
 193 +{
 194 +       struct ath_softc *sc = file->private_data;
 195 +       char buf[32], *str, *name, *c;
 196 +       ssize_t len;
 197 +       unsigned int gpio;
 198 +       bool active_low = false;
 199 +
 200 +       len = min(count, sizeof(buf) - 1);
 201 +       if (copy_from_user(buf, ubuf, len))
 202 +               return -EFAULT;
 203 +
 204 +       buf[len] = '\0';
 205 +       name = strchr(buf, ',');
 206 +       if (!name)
 207 +               return -EINVAL;
 208 +
 209 +       *(name++) = 0;
 210 +       if (!*name)
 211 +               return -EINVAL;
 212 +
 213 +       c = strchr(name, '\n');
 214 +       if (c)
 215 +               *c = 0;
 216 +
 217 +       str = buf;
 218 +       if (*str == '!') {
 219 +               str++;
 220 +               active_low = true;
 221 +       }
 222 +
 223 +       if (kstrtouint(str, 0, &gpio) < 0)
 224 +               return -EINVAL;
 225 +
 226 +       if (gpio >= sc->sc_ah->caps.num_gpio_pins)
 227 +               return -EINVAL;
 228 +
 229 +       if (ath_create_gpio_led(sc, gpio, name, NULL, active_low) < 0)
 230 +               return -EINVAL;
 231 +
 232 +       return count;
 233 +}
 234 +
 235 +static const struct file_operations fops_gpio_led = {
 236 +       .write = write_file_gpio_led,
 237 +       .open = simple_open,
 238 +       .owner = THIS_MODULE,
 239 +       .llseek = default_llseek,
 240 +};
 241 +
 242 +#endif
 243 +
 244  #ifdef CONFIG_ATH9K_MAC_DEBUG
 245
 246  void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
 247 @@ -1696,6 +1751,11 @@ int ath9k_init_debug(struct ath_hw *ah)
 248                             &fops_samps);
 249  #endif
 250
 251 +#ifdef CONFIG_MAC80211_LEDS
 252 +       debugfs_create_file("gpio_led", S_IWUSR,
 253 +                          sc->debug.debugfs_phy, sc, &fops_gpio_led);
 254 +#endif
 255 +
 256         debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
 257                            sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
 258