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| author |   Chunfeng Yun <chunfeng.yun@mediatek.com> | 2016-10-19 10:28:26 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-27 17:02:41 +0200 |
| commit | d0ed062a8b75b9c9ba5a942894636f2d9bb72040 (patch) | |
| tree | 13f0860c5451f03778668e823b7c9321b5089d00 /drivers/usb/mtu3/mtu3.h | |
| parent | usb: mtu3: host only mode support (diff) | |
| download | wireguard-linux-d0ed062a8b75b9c9ba5a942894636f2d9bb72040.tar.xz wireguard-linux-d0ed062a8b75b9c9ba5a942894636f2d9bb72040.zip | |
usb: mtu3: dual-role mode support
support dual-role mode; there are two ways to switch between
host and device modes, one is by idpin, another is by debugfs
which depends on user input.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3.h')
| -rw-r--r-- | drivers/usb/mtu3/mtu3.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index a7c0ce873c44..ba9df719f363 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -21,6 +21,7 @@ #include <linux/device.h> #include <linux/dmapool.h> +#include <linux/extcon.h> #include <linux/interrupt.h> #include <linux/list.h> #include <linux/phy/phy.h> @@ -172,15 +173,44 @@ struct mtu3_gpd_ring { struct qmu_gpd *enqueue; struct qmu_gpd *dequeue; }; + +/** +* @vbus: vbus 5V used by host mode +* @edev: external connector used to detect vbus and iddig changes +* @vbus_nb: notifier for vbus detection +* @vbus_nb: notifier for iddig(idpin) detection +* @extcon_reg_dwork: delay work for extcon notifier register, waiting for +* xHCI driver initialization, it's necessary for system bootup +* as device. +* @is_u3_drd: whether port0 supports usb3.0 dual-role device or not +* @id_*: used to maually switch between host and device modes by idpin +* @manual_drd_enabled: it's true when supports dual-role device by debugfs +* to switch host/device modes depending on user input. +*/ +struct otg_switch_mtk { + struct regulator *vbus; + struct extcon_dev *edev; + struct notifier_block vbus_nb; + struct notifier_block id_nb; + struct delayed_work extcon_reg_dwork; + bool is_u3_drd; + /* dual-role switch by debugfs */ + struct pinctrl *id_pinctrl; + struct pinctrl_state *id_float; + struct pinctrl_state *id_ground; + bool manual_drd_enabled; +}; + /** * @mac_base: register base address of device MAC, exclude xHCI's - * @ippc_base: register base address of ip port controller interface (IPPC) + * @ippc_base: register base address of IP Power and Clock interface (IPPC) * @vusb33: usb3.3V shared by device/host IP * @sys_clk: system clock of mtu3, shared by device/host IP * @dr_mode: works in which mode: * host only, device only or dual-role mode * @u2_ports: number of usb2.0 host ports * @u3_ports: number of usb3.0 host ports + * @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 * @wk_deb_p1: it's optional, and depends on port1 is supported or not @@ -196,10 +226,12 @@ struct ssusb_mtk { struct regulator *vusb33; struct clk *sys_clk; /* otg */ + struct otg_switch_mtk otg_switch; enum usb_dr_mode dr_mode; bool is_host; int u2_ports; int u3_ports; + struct dentry *dbgfs_root; /* usb wakeup for host mode */ bool wakeup_en; struct clk *wk_deb_p0; |