72 lines
2.1 KiB
Diff
72 lines
2.1 KiB
Diff
From 7b4161933d0a409023f5ef70cdc9296ab1cf5430 Mon Sep 17 00:00:00 2001
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From: Jes Sorensen <Jes.Sorensen@redhat.com>
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Date: Wed, 14 Sep 2016 14:10:42 -0400
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Subject: [PATCH] rtl8xxxu: Fix reloading of driver for 8188eu devices
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For 8188eu, once the MAC is asked to power down by setting
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APS_FSMCO_MAC_OFF, there seems to be no way to bring it back to life.
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In addition, only disable RF_ENABLE in RF_CTRL rather than all bits.
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This was spotted by Andrea Merello who noticed that if we dropped the
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call to rtl8188eu_active_to_emu() reloading started working.
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Reported-by: Andrea Merello <andrea.merello@gmail.com>
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Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
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---
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.../net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 29 +++++-----------------
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1 file changed, 6 insertions(+), 23 deletions(-)
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--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
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+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
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@@ -1160,37 +1160,18 @@ exit:
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static int rtl8188eu_active_to_emu(struct rtl8xxxu_priv *priv)
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{
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u8 val8;
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- int count, ret = 0;
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/* Turn off RF */
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- rtl8xxxu_write8(priv, REG_RF_CTRL, 0);
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+ val8 = rtl8xxxu_read8(priv, REG_RF_CTRL);
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+ val8 &= ~RF_ENABLE;
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+ rtl8xxxu_write8(priv, REG_RF_CTRL, val8);
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/* LDO Sleep mode */
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val8 = rtl8xxxu_read8(priv, REG_LPLDO_CTRL);
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val8 |= BIT(4);
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rtl8xxxu_write8(priv, REG_LPLDO_CTRL, val8);
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- /* 0x0005[1] = 1 turn off MAC by HW state machine*/
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- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1);
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- val8 |= BIT(1);
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- rtl8xxxu_write8(priv, REG_APS_FSMCO + 1, val8);
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-
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- for (count = RTL8XXXU_MAX_REG_POLL; count; count--) {
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- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1);
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- if ((val8 & BIT(1)) == 0)
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- break;
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- udelay(10);
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- }
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-
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- if (!count) {
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- dev_warn(&priv->udev->dev, "%s: Disabling MAC timed out\n",
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- __func__);
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- ret = -EBUSY;
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- goto exit;
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- }
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-
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-exit:
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- return ret;
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+ return 0;
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}
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static int rtl8188eu_emu_to_disabled(struct rtl8xxxu_priv *priv)
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@@ -1372,6 +1353,8 @@ void rtl8188eu_power_off(struct rtl8xxxu
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static void rtl8188e_enable_rf(struct rtl8xxxu_priv *priv)
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{
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+ rtl8xxxu_write8(priv, REG_RF_CTRL, RF_ENABLE | RF_RSTB | RF_SDMRSTB);
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+
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rtl8xxxu_write8(priv, REG_TXPAUSE, 0x00);
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}
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