From a04c9f2d5dba6debe9897ab01f56549961c58fbb Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Tue, 8 Jun 2021 15:57:35 +0800 Subject: [PATCH] usb: mtu3: use enum usb_role instead of private defined ones Now we mainly use usb-role-switch to set dual role mode, and all three ways supported use the same function to switch mode, use usb_role enum will make code clear Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1623139069-8173-10-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/mtu3/mtu3_dr.c | 52 +++++++++++++--------------------------------- 1 file changed, 15 insertions(+), 37 deletions(-) diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c index 89ad448..7eabce9 100644 --- a/drivers/usb/mtu3/mtu3_dr.c +++ b/drivers/usb/mtu3/mtu3_dr.c @@ -16,29 +16,6 @@ #define USB2_PORT 2 #define USB3_PORT 3 -enum mtu3_vbus_id_state { - MTU3_ID_FLOAT = 1, - MTU3_ID_GROUND, - MTU3_VBUS_OFF, - MTU3_VBUS_VALID, -}; - -static char *mailbox_state_string(enum mtu3_vbus_id_state state) -{ - switch (state) { - case MTU3_ID_FLOAT: - return "ID_FLOAT"; - case MTU3_ID_GROUND: - return "ID_GROUND"; - case MTU3_VBUS_OFF: - return "VBUS_OFF"; - case MTU3_VBUS_VALID: - return "VBUS_VALID"; - default: - return "UNKNOWN"; - } -} - static void toggle_opstate(struct ssusb_mtk *ssusb) { if (!ssusb->otg_switch.is_u3_drd) { @@ -147,31 +124,32 @@ int ssusb_set_vbus(struct otg_switch_mtk *otg_sx, int is_on) return 0; } -static void ssusb_set_mailbox(struct otg_switch_mtk *otg_sx, - enum mtu3_vbus_id_state status) +static void ssusb_set_role(struct otg_switch_mtk *otg_sx, enum usb_role role) { struct ssusb_mtk *ssusb = container_of(otg_sx, struct ssusb_mtk, otg_switch); struct mtu3 *mtu = ssusb->u3d; - dev_dbg(ssusb->dev, "mailbox %s\n", mailbox_state_string(status)); - mtu3_dbg_trace(ssusb->dev, "mailbox %s", mailbox_state_string(status)); + dev_dbg(ssusb->dev, "set role : %d\n", role); + mtu3_dbg_trace(ssusb->dev, "set role : %d", role); - switch (status) { - case MTU3_ID_GROUND: + switch (role) { + case USB_ROLE_HOST: mtu3_stop(mtu); switch_port_to_host(ssusb); ssusb_set_vbus(otg_sx, 1); ssusb->is_host = true; break; - case MTU3_ID_FLOAT: + case USB_ROLE_DEVICE: ssusb->is_host = false; ssusb_set_vbus(otg_sx, 0); switch_port_to_device(ssusb); mtu3_start(mtu); break; + case USB_ROLE_NONE: + break; default: - dev_err(ssusb->dev, "invalid state\n"); + dev_err(ssusb->dev, "invalid role\n"); } } @@ -181,13 +159,13 @@ static void ssusb_id_work(struct work_struct *work) container_of(work, struct otg_switch_mtk, id_work); if (otg_sx->id_event) - ssusb_set_mailbox(otg_sx, MTU3_ID_GROUND); + ssusb_set_role(otg_sx, USB_ROLE_HOST); else - ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT); + ssusb_set_role(otg_sx, USB_ROLE_DEVICE); } /* - * @ssusb_id_notifier is called in atomic context, but @ssusb_set_mailbox + * @ssusb_id_notifier is called in atomic context, but ssusb_set_role() * may sleep, so use work queue here */ static int ssusb_id_notifier(struct notifier_block *nb, @@ -226,7 +204,7 @@ static int ssusb_extcon_register(struct otg_switch_mtk *otg_sx) /* default as host, switch to device mode if needed */ if (extcon_get_state(edev, EXTCON_USB_HOST) == false) - ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT); + ssusb_set_role(otg_sx, USB_ROLE_DEVICE); return 0; } @@ -243,10 +221,10 @@ void ssusb_mode_switch(struct ssusb_mtk *ssusb, int to_host) if (to_host) { ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_HOST); - ssusb_set_mailbox(otg_sx, MTU3_ID_GROUND); + ssusb_set_role(otg_sx, USB_ROLE_HOST); } else { ssusb_set_force_mode(ssusb, MTU3_DR_FORCE_DEVICE); - ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT); + ssusb_set_role(otg_sx, USB_ROLE_DEVICE); } } -- 2.7.4