Re: rtl8821ae.

[Larry Finger]

On 02/04/2014 01:57 PM, Andrea Merello wrote:
> Sorry, my fault.. you had already reported me the iowrite16 vs
> iowrite8 for anaparam3 issue, but I forgot to fix it :(
>
> If you are reasonably sure that a 16bits-wide write is OK on the
> rtl8187b hardware (In reference code I have here only 8bits are
> written), then I agree applying your fix, and I will leave unchanged
> my modifications.
> Otherwise, if you are unsure, I will revert thing in the common
> rtl818x struct (switching back to 8bit type) and I simply make a cast
> on rtl8187se, or I will use an union if possible, so the rtl8187b
> driver remains unchanged.
>
> On the other hand, for the remaining issues with changed names for
> bitfield (the XXXX_SHIFT), I wil vote to fix the rtl8187 driver:
> That names IMHO are wrong (misleading) and while fixing them should
> help avoid future confusion, the fix is trivial enough that I'm really
> confident not to broke anything.
>
> I had already sent a patch for it:

Somehow I missed this patch. Do you know if John Linville picked it up?

I'm not sure if the ANAPARAM3 register could handle a 16-bit write on an 
RTL8187B. To be cautious, I wrote and have tested the attached patch using a 
union. The patch includes a fix for an undefined symbol 
(RTL818X_TX_CONF_HW_SEQNUM). With this patch my RTL8187SE and RTL8187B devices 
both work.

Larry

Index: wireless-testing/drivers/net/wireless/rtl818x/rtl8187/dev.c
===================================================================
--- wireless-testing.orig/drivers/net/wireless/rtl818x/rtl8187/dev.c
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl8187/dev.c
@@ -592,7 +592,7 @@ static void rtl8187_set_anaparam(struct
 	rtl818x_iowrite32(priv, &priv->map->ANAPARAM, anaparam);
 	rtl818x_iowrite32(priv, &priv->map->ANAPARAM2, anaparam2);
 	if (priv->is_rtl8187b)
-		rtl818x_iowrite8(priv, &priv->map->ANAPARAM3, anaparam3);
+		rtl818x_iowrite8(priv, &priv->map->ANAPARAM3A, anaparam3);
 	reg &= ~RTL818X_CONFIG3_ANAPARAM_WRITE;
 	rtl818x_iowrite8(priv, &priv->map->CONFIG3, reg);
 	rtl818x_iowrite8(priv, &priv->map->EEPROM_CMD,
@@ -949,7 +949,7 @@ static int rtl8187_start(struct ieee8021
 		rtl818x_iowrite8(priv, &priv->map->TX_AGC_CTL, reg);
 
 		rtl818x_iowrite32(priv, &priv->map->TX_CONF,
-				  RTL818X_TX_CONF_HW_SEQNUM |
+				  RTL818X_TX_CONF_SW_SEQNUM |
 				  RTL818X_TX_CONF_DISREQQSIZE |
 				  (RETRY_COUNT << 8  /* short retry limit */) |
 				  (RETRY_COUNT << 0  /* long retry limit */) |
Index: wireless-testing/drivers/net/wireless/rtl818x/rtl818x.h
===================================================================
--- wireless-testing.orig/drivers/net/wireless/rtl818x/rtl818x.h
+++ wireless-testing/drivers/net/wireless/rtl818x/rtl818x.h
@@ -309,7 +309,10 @@ struct rtl818x_csr {
 	__le32	RDSAR; /* 0xe4 */
 	__le16	TID_AC_MAP; /* 0xe8 */
 	u8	reserved_20[4];
-	__le16	ANAPARAM3; /* 0xee */
+	union {
+		__le16	ANAPARAM3; /* 0xee */
+		u8	ANAPARAM3A; /* for rtl8187 */
+	};
 
 #define AC_PARAM_TXOP_LIMIT_SHIFT	16
 #define AC_PARAM_ECW_MAX_SHIFT		12