diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2022-01-28 21:41:42 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-01-31 11:32:20 +0000 |
| commit | d192181c2ccbeb6403397b070b82676d9d665ec2 (patch) | |
| tree | 4ba7fee283243009c592266dea8a146a71813f1e /drivers/net/ethernet/realtek | |
| parent | 73c105ad2a3e142d81fc59761ce8353d0b211b8f (diff) | |
| download | linux-d192181c2ccbeb6403397b070b82676d9d665ec2.tar.gz | |
r8169: add rtl_disable_exit_l1()
Add rtl_disable_exit_l1() for ensuring that the chip doesn't
inadvertently exit ASPM L1 when being in a low-power mode.
The new function is called from rtl_prepare_power_down() which
has to be moved in the code to avoid a forward declaration.
According to Realtek OCP register 0xc0ac shadows ERI register 0xd4
on RTL8168 versions from RTL8168g. This allows to simplify the
code a little.
v2:
- call rtl_disable_exit_l1() also if DASH or WoL are enabled
Suggested-by: Chun-Hao Lin <hau@realtek.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/realtek')
| -rw-r--r-- | drivers/net/ethernet/realtek/r8169_main.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 3c3d1506bd56..4c267b731a39 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -2667,10 +2667,7 @@ static void rtl_enable_exit_l1(struct rtl8169_private *tp) case RTL_GIGA_MAC_VER_37 ... RTL_GIGA_MAC_VER_38: rtl_eri_set_bits(tp, 0xd4, 0x0c00); break; - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_53: - rtl_eri_set_bits(tp, 0xd4, 0x1f80); - break; - case RTL_GIGA_MAC_VER_60 ... RTL_GIGA_MAC_VER_63: + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63: r8168_mac_ocp_modify(tp, 0xc0ac, 0, 0x1f80); break; default: @@ -2678,6 +2675,20 @@ static void rtl_enable_exit_l1(struct rtl8169_private *tp) } } +static void rtl_disable_exit_l1(struct rtl8169_private *tp) +{ + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_34 ... RTL_GIGA_MAC_VER_38: + rtl_eri_clear_bits(tp, 0xd4, 0x1f00); + break; + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_63: + r8168_mac_ocp_modify(tp, 0xc0ac, 0x1f80, 0); + break; + default: + break; + } +} + static void rtl_hw_aspm_clkreq_enable(struct rtl8169_private *tp, bool enable) { /* Don't enable ASPM in the chip if OS can't control ASPM */ @@ -4702,7 +4713,7 @@ static void rtl8169_down(struct rtl8169_private *tp) rtl_pci_commit(tp); rtl8169_cleanup(tp, true); - + rtl_disable_exit_l1(tp); rtl_prepare_power_down(tp); } |