You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.1 KiB
73 lines
2.1 KiB
8 years ago
|
From 7b4161933d0a409023f5ef70cdc9296ab1cf5430 Mon Sep 17 00:00:00 2001
|
||
|
9 years ago
|
From: Jes Sorensen <Jes.Sorensen@redhat.com>
|
||
|
|
Date: Wed, 14 Sep 2016 14:10:42 -0400
|
||
|
|
Subject: [PATCH] rtl8xxxu: Fix reloading of driver for 8188eu devices
|
||
|
|
|
||
|
|
For 8188eu, once the MAC is asked to power down by setting
|
||
|
|
APS_FSMCO_MAC_OFF, there seems to be no way to bring it back to life.
|
||
|
|
|
||
|
|
In addition, only disable RF_ENABLE in RF_CTRL rather than all bits.
|
||
|
|
|
||
|
|
This was spotted by Andrea Merello who noticed that if we dropped the
|
||
|
|
call to rtl8188eu_active_to_emu() reloading started working.
|
||
|
|
|
||
|
|
Reported-by: Andrea Merello <andrea.merello@gmail.com>
|
||
|
|
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
|
||
|
|
---
|
||
|
|
.../net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 29 +++++-----------------
|
||
|
|
1 file changed, 6 insertions(+), 23 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
|
||
|
|
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
|
||
|
|
@@ -1160,37 +1160,18 @@ exit:
|
||
|
|
static int rtl8188eu_active_to_emu(struct rtl8xxxu_priv *priv)
|
||
|
|
{
|
||
|
|
u8 val8;
|
||
|
|
- int count, ret = 0;
|
||
|
|
|
||
|
|
/* Turn off RF */
|
||
|
|
- rtl8xxxu_write8(priv, REG_RF_CTRL, 0);
|
||
|
|
+ val8 = rtl8xxxu_read8(priv, REG_RF_CTRL);
|
||
|
|
+ val8 &= ~RF_ENABLE;
|
||
|
|
+ rtl8xxxu_write8(priv, REG_RF_CTRL, val8);
|
||
|
|
|
||
|
|
/* LDO Sleep mode */
|
||
|
|
val8 = rtl8xxxu_read8(priv, REG_LPLDO_CTRL);
|
||
|
|
val8 |= BIT(4);
|
||
|
|
rtl8xxxu_write8(priv, REG_LPLDO_CTRL, val8);
|
||
|
|
|
||
|
|
- /* 0x0005[1] = 1 turn off MAC by HW state machine*/
|
||
|
|
- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1);
|
||
|
|
- val8 |= BIT(1);
|
||
|
|
- rtl8xxxu_write8(priv, REG_APS_FSMCO + 1, val8);
|
||
|
|
-
|
||
|
|
- for (count = RTL8XXXU_MAX_REG_POLL; count; count--) {
|
||
|
|
- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1);
|
||
|
|
- if ((val8 & BIT(1)) == 0)
|
||
|
|
- break;
|
||
|
|
- udelay(10);
|
||
|
|
- }
|
||
|
|
-
|
||
|
|
- if (!count) {
|
||
|
|
- dev_warn(&priv->udev->dev, "%s: Disabling MAC timed out\n",
|
||
|
|
- __func__);
|
||
|
|
- ret = -EBUSY;
|
||
|
|
- goto exit;
|
||
|
|
- }
|
||
|
|
-
|
||
|
|
-exit:
|
||
|
|
- return ret;
|
||
|
|
+ return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int rtl8188eu_emu_to_disabled(struct rtl8xxxu_priv *priv)
|
||
|
|
@@ -1372,6 +1353,8 @@ void rtl8188eu_power_off(struct rtl8xxxu
|
||
|
|
|
||
|
|
static void rtl8188e_enable_rf(struct rtl8xxxu_priv *priv)
|
||
|
|
{
|
||
|
|
+ rtl8xxxu_write8(priv, REG_RF_CTRL, RF_ENABLE | RF_RSTB | RF_SDMRSTB);
|
||
|
|
+
|
||
|
|
rtl8xxxu_write8(priv, REG_TXPAUSE, 0x00);
|
||
|
|
}
|
||
|
|
|