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From 738832d9e91098f5b3ddb4e71fe8e666575c6bdb Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Wed, 24 Aug 2016 13:54:00 -0400
Subject: [PATCH] rtl8xxxu: Do not set auto rate fallback on 8188eu
Introduce a fileops flag to indicate whether the device has this
feature.
Reported-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192c.c | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c | 1 +
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 15 ++++++++++-----
6 files changed, 15 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
@@ -1398,6 +1398,7 @@ struct rtl8xxxu_fileops {
u8 has_s0s1:1;
u8 has_tx_report:1;
u8 gen2_thermal_meter:1;
+ u8 has_darfrc:1;
u32 adda_1t_init;
u32 adda_1t_path_on;
u32 adda_2t_path_on_a;
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192c.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192c.c
@@ -572,6 +572,7 @@ struct rtl8xxxu_fileops rtl8192cu_fops =
.rx_agg_buf_size = 16000,
.tx_desc_size = sizeof(struct rtl8xxxu_txdesc32),
.rx_desc_size = sizeof(struct rtl8xxxu_rxdesc16),
+ .has_darfrc = 1,
.adda_1t_init = 0x0b1b25a0,
.adda_1t_path_on = 0x0bdb25a0,
.adda_2t_path_on_a = 0x04db25a4,
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
@@ -1658,6 +1658,7 @@ struct rtl8xxxu_fileops rtl8192eu_fops =
.rx_desc_size = sizeof(struct rtl8xxxu_rxdesc24),
.has_s0s1 = 0,
.gen2_thermal_meter = 1,
+ .has_darfrc = 1,
.adda_1t_init = 0x0fc01616,
.adda_1t_path_on = 0x0fc01616,
.adda_2t_path_on_a = 0x0fc01616,
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723a.c
@@ -389,6 +389,7 @@ struct rtl8xxxu_fileops rtl8723au_fops =
.rx_agg_buf_size = 16000,
.tx_desc_size = sizeof(struct rtl8xxxu_txdesc32),
.rx_desc_size = sizeof(struct rtl8xxxu_rxdesc16),
+ .has_darfrc = 1,
.adda_1t_init = 0x0b1b25a0,
.adda_1t_path_on = 0x0bdb25a0,
.adda_2t_path_on_a = 0x04db25a4,
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8723b.c
@@ -1673,6 +1673,7 @@ struct rtl8xxxu_fileops rtl8723bu_fops =
.has_s0s1 = 1,
.has_tx_report = 1,
.gen2_thermal_meter = 1,
+ .has_darfrc = 1,
.adda_1t_init = 0x01c00014,
.adda_1t_path_on = 0x01c00014,
.adda_2t_path_on_a = 0x01c00014,
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -4105,11 +4105,16 @@ static int rtl8xxxu_init_device(struct i
rtl8xxxu_write32(priv, REG_EDCA_VI_PARAM, 0x005ea324);
rtl8xxxu_write32(priv, REG_EDCA_VO_PARAM, 0x002fa226);
- /* Set data auto rate fallback retry count */
- rtl8xxxu_write32(priv, REG_DARFRC, 0x00000000);
- rtl8xxxu_write32(priv, REG_DARFRC + 4, 0x10080404);
- rtl8xxxu_write32(priv, REG_RARFRC, 0x04030201);
- rtl8xxxu_write32(priv, REG_RARFRC + 4, 0x08070605);
+ /*
+ * Set data auto rate fallback retry count.
+ * Notably the 8188eu doesn't seem to use this
+ */
+ if (fops->has_darfrc) {
+ rtl8xxxu_write32(priv, REG_DARFRC, 0x00000000);
+ rtl8xxxu_write32(priv, REG_DARFRC + 4, 0x10080404);
+ rtl8xxxu_write32(priv, REG_RARFRC, 0x04030201);
+ rtl8xxxu_write32(priv, REG_RARFRC + 4, 0x08070605);
+ }
val8 = rtl8xxxu_read8(priv, REG_FWHW_TXQ_CTRL);
val8 |= FWHW_TXQ_CTRL_AMPDU_RETRY;
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