releases/4.5.7/ath9k-add-a-module-parameter-to-invert-led-polarity.patch

   1 From cd84042ce9040ad038e958bc67a46fcfc015c736 Mon Sep 17 00:00:00 2001
   2 From: "Vittorio Gambaletta (VittGam)" <linux-wireless@vittgam.net>
   3 Date: Mon, 11 Apr 2016 04:48:54 +0200
   4 Subject: ath9k: Add a module parameter to invert LED polarity.
   5
   6 From: Vittorio Gambaletta (VittGam) <linux-wireless@vittgam.net>
   7
   8 commit cd84042ce9040ad038e958bc67a46fcfc015c736 upstream.
   9
  10 The LED can be active high instead of active low on some hardware.
  11
  12 Add the led_active_high module parameter. It defaults to -1 to obey
  13 platform data as before.
  14
  15 Setting the parameter to 1 or 0 will force the LED respectively
  16 active high or active low.
  17
  18 Cc: <linux-wireless@vger.kernel.org>
  19 Cc: <ath9k-devel@qca.qualcomm.com>
  20 Cc: <ath9k-devel@lists.ath9k.org>
  21 Signed-off-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
  22 Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
  23 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  24
  25 ---
  26  drivers/net/wireless/ath/ath9k/init.c |    7 +++++++
  27  1 file changed, 7 insertions(+)
  28
  29 --- a/drivers/net/wireless/ath/ath9k/init.c
  30 +++ b/drivers/net/wireless/ath/ath9k/init.c
  31 @@ -49,6 +49,10 @@ int ath9k_led_blink;
  32  module_param_named(blink, ath9k_led_blink, int, 0444);
  33  MODULE_PARM_DESC(blink, "Enable LED blink on activity");
  34
  35 +static int ath9k_led_active_high = -1;
  36 +module_param_named(led_active_high, ath9k_led_active_high, int, 0444);
  37 +MODULE_PARM_DESC(led_active_high, "Invert LED polarity");
  38 +
  39  static int ath9k_btcoex_enable;
  40  module_param_named(btcoex_enable, ath9k_btcoex_enable, int, 0444);
  41  MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");
  42 @@ -600,6 +604,9 @@ static int ath9k_init_softc(u16 devid, s
  43         if (ret)
  44                 return ret;
  45
  46 +       if (ath9k_led_active_high != -1)
  47 +               ah->config.led_active_high = ath9k_led_active_high == 1;
  48 +
  49         /*
  50          * Enable WLAN/BT RX Antenna diversity only when:
  51          *