From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sun, 7 Jun 2015 00:39:52 +0000 (+0300)
Subject: wl1251: allow to disable dynamic ps
X-Git-Tag: sz_173~41
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=7e0d48a08c817b34136922a3ec7238df90996226

wl1251: allow to disable dynamic ps

Some people with CC units reported they get better wifi without dynamic
PS enabled, so allow to disable it. I guess this could be related to
missing clock driver resistor tweak, which breaks chip's own PS.
---

diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c
index 42b8df58da31..e7f1818ad29e 100644
--- a/drivers/net/wireless/wl1251/main.c
+++ b/drivers/net/wireless/wl1251/main.c
@@ -43,6 +43,13 @@
 #include "debugfs.h"
 #include "boot.h"
 
+static bool use_fw_ps = true;
+module_param(use_fw_ps, bool, 0644);
+MODULE_PARM_DESC(use_fw_ps, "Enable powersave once and leave it for chip's "
+			    "firmware to manage. When disabled, mac80211 "
+			    "will toggle powersave on tx activity instead. "
+			    "Default: y/Y/1");
+
 void wl1251_enable_interrupts(struct wl1251 *wl)
 {
 	wl->if_ops->enable_irq(wl);
@@ -1596,11 +1603,13 @@ int wl1251_init_ieee80211(struct wl1251 *wl)
 
 	wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
 		IEEE80211_HW_SUPPORTS_PS |
-		IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 		IEEE80211_HW_BEACON_FILTER |
 		IEEE80211_HW_SUPPORTS_UAPSD |
 		IEEE80211_HW_SUPPORTS_CQM_RSSI;
 
+	if (use_fw_ps)
+		wl->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
+
 	wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 					 BIT(NL80211_IFTYPE_ADHOC);
 	wl->hw->wiphy->max_scan_ssids = 1;