mediatek: backport upstream mediatek patches

[openwrt/staging/blogic.git] / target / linux / mediatek / patches-4.14 / 0104-usb-mtu3-support-option-to-disable-usb3-ports.patch

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 (file)
index 0000000..51b5bcf
--- /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
+