diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2017-10-13 12:10:38 +0300 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-10-19 10:38:10 +0300 |
| commit | 076f1a8903d5dadf224f17be63a25bd75d860659 (patch) | |
| tree | 2b71d0c70ab9572287182d16e3abce9bfcb19a28 /drivers/usb/mtu3/mtu3_host.c | |
| parent | c162ff0aaaac456ef29aebd1e9d4d3e305cd3279 (diff) | |
| download | linux-076f1a8903d5dadf224f17be63a25bd75d860659.tar.xz | |
usb: mtu3: support option to disable usb3 ports
Add support to disable specific usb3 ports, it's useful when
usb3 phy is shared with PCIe or SATA, because we should disable
the corresponding usb3 port if the phy is used by PCIe or SATA.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_host.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_host.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/usb/mtu3/mtu3_host.c b/drivers/usb/mtu3/mtu3_host.c index e42d308b8dc2..4dd9508a60b5 100644 --- a/drivers/usb/mtu3/mtu3_host.c +++ b/drivers/usb/mtu3/mtu3_host.c @@ -151,6 +151,7 @@ int ssusb_host_enable(struct ssusb_mtk *ssusb) void __iomem *ibase = ssusb->ippc_base; int num_u3p = ssusb->u3_ports; int num_u2p = ssusb->u2_ports; + int u3_ports_disabed; u32 check_clk; u32 value; int i; @@ -158,8 +159,14 @@ int ssusb_host_enable(struct ssusb_mtk *ssusb) /* power on host ip */ mtu3_clrbits(ibase, U3D_SSUSB_IP_PW_CTRL1, SSUSB_IP_HOST_PDN); - /* power on and enable all u3 ports */ + /* power on and enable u3 ports except skipped ones */ + u3_ports_disabed = 0; for (i = 0; i < num_u3p; i++) { + if ((0x1 << i) & ssusb->u3p_dis_msk) { + u3_ports_disabed++; + continue; + } + value = mtu3_readl(ibase, SSUSB_U3_CTRL(i)); value &= ~(SSUSB_U3_PORT_PDN | SSUSB_U3_PORT_DIS); value |= SSUSB_U3_PORT_HOST_SEL; @@ -175,7 +182,7 @@ int ssusb_host_enable(struct ssusb_mtk *ssusb) } check_clk = SSUSB_XHCI_RST_B_STS; - if (num_u3p) + if (num_u3p > u3_ports_disabed) check_clk = SSUSB_U3_MAC_RST_B_STS; return ssusb_check_clocks(ssusb, check_clk); @@ -190,8 +197,11 @@ int ssusb_host_disable(struct ssusb_mtk *ssusb, bool suspend) int ret; int i; - /* power down and disable all u3 ports */ + /* power down and disable u3 ports except skipped ones */ for (i = 0; i < num_u3p; i++) { + if ((0x1 << i) & ssusb->u3p_dis_msk) + continue; + value = mtu3_readl(ibase, SSUSB_U3_CTRL(i)); value |= SSUSB_U3_PORT_PDN; value |= suspend ? 0 : SSUSB_U3_PORT_DIS; |