diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0104-usb-mtu3-support-option-to-disable-usb3-ports.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0104-usb-mtu3-support-option-to-disable-usb3-ports.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0104-usb-mtu3-support-option-to-disable-usb3-ports.patch b/target/linux/mediatek/patches-4.14/0104-usb-mtu3-support-option-to-disable-usb3-ports.patch new file mode 100644 index 0000000000..51b5bcffc5 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0104-usb-mtu3-support-option-to-disable-usb3-ports.patch @@ -0,0 +1,117 @@ +From 7a46c3488c48a0fbe313ed25c12af3fb3af48a01 Mon Sep 17 00:00:00 2001 +From: Chunfeng Yun <chunfeng.yun@mediatek.com> +Date: Fri, 13 Oct 2017 17:10:38 +0800 +Subject: [PATCH 104/224] 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> +--- + drivers/usb/mtu3/mtu3.h | 3 +++ + drivers/usb/mtu3/mtu3_host.c | 16 +++++++++++++--- + drivers/usb/mtu3/mtu3_plat.c | 8 ++++++-- + 3 files changed, 22 insertions(+), 5 deletions(-) + +diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h +index b26fffc58446..112723d6e7bc 100644 +--- a/drivers/usb/mtu3/mtu3.h ++++ b/drivers/usb/mtu3/mtu3.h +@@ -210,6 +210,8 @@ struct otg_switch_mtk { + * host only, device only or dual-role mode + * @u2_ports: number of usb2.0 host ports + * @u3_ports: number of usb3.0 host ports ++ * @u3p_dis_msk: mask of disabling usb3 ports, for example, bit0==1 to ++ * disable u3port0, bit1==1 to disable u3port1,... etc + * @dbgfs_root: only used when supports manual dual-role switch via debugfs + * @wakeup_en: it's true when supports remote wakeup in host mode + * @wk_deb_p0: port0's wakeup debounce clock +@@ -232,6 +234,7 @@ struct ssusb_mtk { + bool is_host; + int u2_ports; + int u3_ports; ++ int u3p_dis_msk; + struct dentry *dbgfs_root; + /* usb wakeup for host mode */ + bool wakeup_en; +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; +diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c +index 088e3e685c4f..9edad30c8ae5 100644 +--- a/drivers/usb/mtu3/mtu3_plat.c ++++ b/drivers/usb/mtu3/mtu3_plat.c +@@ -276,6 +276,10 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) + if (ret) + return ret; + ++ /* optional property, ignore the error if it does not exist */ ++ of_property_read_u32(node, "mediatek,u3p-dis-msk", ++ &ssusb->u3p_dis_msk); ++ + if (ssusb->dr_mode != USB_DR_MODE_OTG) + return 0; + +@@ -304,8 +308,8 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) + } + } + +- dev_info(dev, "dr_mode: %d, is_u3_dr: %d\n", +- ssusb->dr_mode, otg_sx->is_u3_drd); ++ dev_info(dev, "dr_mode: %d, is_u3_dr: %d, u3p_dis_msk:%x\n", ++ ssusb->dr_mode, otg_sx->is_u3_drd, ssusb->u3p_dis_msk); + + return 0; + } +-- +2.11.0 + |