diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2021-07-15 17:07:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-27 15:58:37 +0200 |
| commit | d7e127242816e06981840880eead898197a3257b (patch) | |
| tree | a5116af1ff6558beb5af9d9d5719b57ef6b3572b /drivers/usb/mtu3/mtu3_host.c | |
| parent | 88c6b90188d8ebade3f5b1f80b51aa64e55de27e (diff) | |
usb: mtu3: support option to disable usb2 ports
Add support to disable specific usb2 host ports, it's useful when
a usb2 port is disabled on some platforms, but enabled on others
for the same SoC.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1626340078-29111-9-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_host.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_host.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c index 93a1a4c11e1e..6185bac5fecf 100644 --- a/drivers/usb/mtu3/mtu3_host.c +++ b/drivers/usb/mtu3/mtu3_host.c @@ -155,6 +155,9 @@ int ssusb_host_enable(struct ssusb_mtk *ssusb) /* power on and enable all u2 ports */ for (i = 0; i < num_u2p; i++) { + if ((0x1 << i) & ssusb->u2p_dis_msk) + continue; + value = mtu3_readl(ibase, SSUSB_U2_CTRL(i)); value &= ~(SSUSB_U2_PORT_PDN | SSUSB_U2_PORT_DIS); value |= SSUSB_U2_PORT_HOST_SEL; @@ -188,8 +191,11 @@ int ssusb_host_disable(struct ssusb_mtk *ssusb, bool suspend) mtu3_writel(ibase, SSUSB_U3_CTRL(i), value); } - /* power down and disable all u2 ports */ + /* power down and disable u2 ports except skipped ones */ for (i = 0; i < num_u2p; i++) { + if ((0x1 << i) & ssusb->u2p_dis_msk) + continue; + value = mtu3_readl(ibase, SSUSB_U2_CTRL(i)); value |= SSUSB_U2_PORT_PDN; value |= suspend ? 0 : SSUSB_U2_PORT_DIS; |