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authorSujith Manoharan <Sujith.Manoharan@atheros.com>2011-01-04 13:17:18 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-01-19 11:36:06 -0500
commit09a525d33870e8a16076ec0200cc5002f6bef35d (patch)
tree75f3ae04c9175d569c7ef2add7bfe1eb913b3f09 /drivers/net/wireless/ath/ath9k/htc_drv_init.c
parentfcdc403c31ed5bb5f3baf42f4e2b5e7198fef0c0 (diff)
ath9k_htc: Add multiple register read API
This would decrease latency in reading bulk registers. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_init.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/htc_drv_init.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 38433f9bfe5..8e04586c525 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -297,6 +297,34 @@ static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
return be32_to_cpu(val);
}
+static void ath9k_multi_regread(void *hw_priv, u32 *addr,
+ u32 *val, u16 count)
+{
+ struct ath_hw *ah = (struct ath_hw *) hw_priv;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
+ __be32 tmpaddr[8];
+ __be32 tmpval[8];
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ tmpaddr[i] = cpu_to_be32(addr[i]);
+ }
+
+ ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
+ (u8 *)tmpaddr , sizeof(u32) * count,
+ (u8 *)tmpval, sizeof(u32) * count,
+ 100);
+ if (unlikely(ret)) {
+ ath_dbg(common, ATH_DBG_WMI,
+ "Multiple REGISTER READ FAILED (count: %d)\n", count);
+ }
+
+ for (i = 0; i < count; i++) {
+ val[i] = be32_to_cpu(tmpval[i]);
+ }
+}
+
static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
{
struct ath_hw *ah = (struct ath_hw *) hw_priv;
@@ -407,6 +435,7 @@ static void ath9k_regwrite_flush(void *hw_priv)
static const struct ath_ops ath9k_common_ops = {
.read = ath9k_regread,
+ .multi_read = ath9k_multi_regread,
.write = ath9k_regwrite,
.enable_write_buffer = ath9k_enable_regwrite_buffer,
.write_flush = ath9k_regwrite_flush,