ath9k_htc: add new WMI_REG_RMW_CMDID command
Since usb bus add extra delay on each request, a command
with read + write requests is too expensive. We can dramtically
reduce usb load by moving this command to firmware.
In my tests, this patch will reduce channel scan time
for about 5-10 seconds.
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/net/wireless/ath/ath9k/wmi.h b/drivers/net/wireless/ath/ath9k/wmi.h
index 0db37f2..aa84a33 100644
--- a/drivers/net/wireless/ath/ath9k/wmi.h
+++ b/drivers/net/wireless/ath/ath9k/wmi.h
@@ -112,6 +112,7 @@
WMI_TX_STATS_CMDID,
WMI_RX_STATS_CMDID,
WMI_BITRATE_MASK_CMDID,
+ WMI_REG_RMW_CMDID,
};
enum wmi_event_id {
@@ -125,12 +126,19 @@
};
#define MAX_CMD_NUMBER 62
+#define MAX_RMW_CMD_NUMBER 15
struct register_write {
__be32 reg;
__be32 val;
};
+struct register_rmw {
+ __be32 reg;
+ __be32 set;
+ __be32 clr;
+} __packed;
+
struct ath9k_htc_tx_event {
int count;
struct __wmi_event_txstatus txs;
@@ -156,10 +164,18 @@
spinlock_t wmi_lock;
+ /* multi write section */
atomic_t mwrite_cnt;
struct register_write multi_write[MAX_CMD_NUMBER];
u32 multi_write_idx;
struct mutex multi_write_mutex;
+
+ /* multi rmw section */
+ atomic_t m_rmw_cnt;
+ struct register_rmw multi_rmw[MAX_RMW_CMD_NUMBER];
+ u32 multi_rmw_idx;
+ struct mutex multi_rmw_mutex;
+
};
struct wmi *ath9k_init_wmi(struct ath9k_htc_priv *priv);