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| author | Sujith Manoharan <Sujith.Manoharan@atheros.com> | 2011-01-04 13:17:18 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-19 11:36:06 -0500 |
| commit | 09a525d33870e8a16076ec0200cc5002f6bef35d (patch) | |
| tree | 75f3ae04c9175d569c7ef2add7bfe1eb913b3f09 /drivers/net/wireless/ath/ath9k/htc_drv_init.c | |
| parent | fcdc403c31ed5bb5f3baf42f4e2b5e7198fef0c0 (diff) | |
| download | kernel_samsung_smdk4412-09a525d33870e8a16076ec0200cc5002f6bef35d.zip kernel_samsung_smdk4412-09a525d33870e8a16076ec0200cc5002f6bef35d.tar.gz kernel_samsung_smdk4412-09a525d33870e8a16076ec0200cc5002f6bef35d.tar.bz2 | |
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.c | 29 |
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 38433f9..8e04586 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, |