rtl8xxxu: Add additional documentation for RX DMA registers

This also renames REG_USB_AGG_{TO,TH} to REG_USB_AGG_{TIMEOUT,THRESH}

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
index bff883c..921c565 100644 (file)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h
@@ -405,7 +405,11 @@
 #define REG_DWBCN1_CTRL_8723B          0x0228
 
 /* 0x0280 ~ 0x02FF     RXDMA Configuration */
-#define REG_RXDMA_AGG_PG_TH            0x0280
+#define REG_RXDMA_AGG_PG_TH            0x0280  /* 0-7 : USB DMA size bits
+                                                  8-14: USB DMA timeout
+                                                  15  : Aggregation enable
+                                                        Only seems to be used
+                                                        on 8723bu/8192eu */
 #define  RXDMA_USB_AGG_ENABLE          BIT(31)
 #define REG_RXPKT_NUM                  0x0284
 #define  RXPKT_NUM_RXDMA_IDLE          BIT(17)
@@ -1058,8 +1062,8 @@
                                                   0: Use int, 1: use bulk */
 #define REG_USB_HRPWM                  0xfe58
 #define REG_USB_DMA_AGG_TO             0xfe5b
-#define REG_USB_AGG_TO                 0xfe5c
-#define REG_USB_AGG_TH                 0xfe5d
+#define REG_USB_AGG_TIMEOUT            0xfe5c
+#define REG_USB_AGG_THRESH             0xfe5d
 
 #define REG_NORMAL_SIE_VID             0xfe60  /* 0xfe60 - 0xfe61 */
 #define REG_NORMAL_SIE_PID             0xfe62  /* 0xfe62 - 0xfe63 */