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rtl8xxxu: Provide special handling when writing RF regs on 8192eu

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The 8192eu requires clearing/restoring bit 17 in REG_FPGA0_POWER_SAVE
before/after writing RF registers.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Jes Sorensen 2016-04-07 14:19:25 -04:00 committed by Kalle Valo
parent 444004bd13
commit 2949b9ee77
1 changed files with 13 additions and 1 deletions
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14
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c
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@ -1896,7 +1896,7 @@ static int rtl8xxxu_write_rfreg(struct rtl8xxxu_priv *priv,
enum rtl8xxxu_rfpath path, u8 reg, u32 data)
{
int ret, retval;
u32 dataaddr;
u32 dataaddr, val32;
if (rtl8xxxu_debug & RTL8XXXU_DEBUG_RFREG_WRITE)
dev_info(&priv->udev->dev, "%s(%02x) = 0x%06x\n",
@ -1905,6 +1905,12 @@ static int rtl8xxxu_write_rfreg(struct rtl8xxxu_priv *priv,
data &= FPGA0_LSSI_PARM_DATA_MASK;
dataaddr = (reg << FPGA0_LSSI_PARM_ADDR_SHIFT) | data;
if (priv->rtl_chip == RTL8192E) {
val32 = rtl8xxxu_read32(priv, REG_FPGA0_POWER_SAVE);
val32 &= ~0x20000;
rtl8xxxu_write32(priv, REG_FPGA0_POWER_SAVE, val32);
}
/* Use XB for path B */
ret = rtl8xxxu_write32(priv, rtl8xxxu_rfregs[path].lssiparm, dataaddr);
if (ret != sizeof(dataaddr))
@ -1914,6 +1920,12 @@ static int rtl8xxxu_write_rfreg(struct rtl8xxxu_priv *priv,
udelay(1);
if (priv->rtl_chip == RTL8192E) {
val32 = rtl8xxxu_read32(priv, REG_FPGA0_POWER_SAVE);
val32 |= 0x20000;
rtl8xxxu_write32(priv, REG_FPGA0_POWER_SAVE, val32);
}
return retval;
}