wl12xx: Do end-of-transactions transfers only if needed
On newer hardware revisions, there is no need to write the host's
counter at the end of a RX transaction. The same applies to writing the
number of packets at the end of a TX transaction.
It is generally a good idea to avoid unnecessary SDIO/SPI transfers.
Throughput and CPU usage are improved when avoiding these.
Send the host's RX counter and the TX packet count only if needed, based
on the hardware revision.
[Changed WL12XX_QUIRK_END_OF_TRANSACTION to use BIT(0) -- Luca]
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index 7132bc7..ea1eee7 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -535,6 +535,9 @@
/* AP-mode - a bitmap of links currently in PS mode in mac80211 */
unsigned long ap_ps_map;
+
+ /* Quirks of specific hardware revisions */
+ unsigned int quirks;
};
struct wl1271_station {
@@ -562,4 +565,9 @@
#define HW_BG_RATES_MASK 0xffff
#define HW_HT_RATES_OFFSET 16
+/* Quirks */
+
+/* Each RX/TX transaction requires an end-of-transaction transfer */
+#define WL12XX_QUIRK_END_OF_TRANSACTION BIT(0)
+
#endif