iwlwifi: Add iwl_write8()

To support byte writes to CSR_INT_COALESCING and CSR_INT_PERIODIC registers,
add iwl_write8(), including debug/trace support.

Signed-off-by: Ben Cahill <ben.m.cahill@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h
index d0a358c9d96b..e552d4c4bdbe 100644
--- a/drivers/net/wireless/iwlwifi/iwl-io.h
+++ b/drivers/net/wireless/iwlwifi/iwl-io.h
@@ -62,6 +62,26 @@
  *
  */
 
+static inline void _iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val)
+{
+        trace_iwlwifi_dev_iowrite8(priv, ofs, val);
+        iowrite8(val, priv->hw_base + ofs);
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+static inline void __iwl_write8(const char *f, u32 l, struct iwl_priv *priv,
+                                 u32 ofs, u8 val)
+{
+        IWL_DEBUG_IO(priv, "write8(0x%08X, 0x%02X) - %s %d\n", ofs, val, f, l);
+        _iwl_write8(priv, ofs, val);
+}
+#define iwl_write8(priv, ofs, val) \
+        __iwl_write8(__FILE__, __LINE__, priv, ofs, val)
+#else
+#define iwl_write8(priv, ofs, val) _iwl_write8(priv, ofs, val)
+#endif
+
+
 static inline void _iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val)
 {
         trace_iwlwifi_dev_iowrite32(priv, ofs, val);