diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/mtu3/mtu3.h | 2 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_gadget.c | 2 | ||||
| -rw-r--r-- | drivers/usb/mtu3/mtu3_gadget_ep0.c | 23 |
3 files changed, 24 insertions, 3 deletions
diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index 7b6dc23d77e9..b26fffc58446 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -288,6 +288,7 @@ static inline struct ssusb_mtk *dev_to_ssusb(struct device *dev) * MTU3_U3_IP_SLOT_DEFAULT for U3 IP * @may_wakeup: means device's remote wakeup is enabled * @is_self_powered: is reported in device status and the config descriptor + * @delayed_status: true when function drivers ask for delayed status * @ep0_req: dummy request used while handling standard USB requests * for GET_STATUS and SET_SEL * @setup_buf: ep0 response buffer for GET_STATUS and SET_SEL requests @@ -327,6 +328,7 @@ struct mtu3 { unsigned u1_enable:1; unsigned u2_enable:1; unsigned is_u3_ip:1; + unsigned delayed_status:1; u8 address; u8 test_mode_nr; diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index 9dd2441b4fa1..a4ad67cf0c52 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -663,6 +663,7 @@ int mtu3_gadget_setup(struct mtu3 *mtu) mtu->g.sg_supported = 0; mtu->g.name = MTU3_DRIVER_NAME; mtu->is_active = 0; + mtu->delayed_status = false; mtu3_gadget_init_eps(mtu); @@ -727,4 +728,5 @@ void mtu3_gadget_reset(struct mtu3 *mtu) mtu->address = 0; mtu->ep0_state = MU3D_EP0_STATE_SETUP; mtu->may_wakeup = 0; + mtu->delayed_status = false; } diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 2d7427b48775..958d74dd2b78 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -16,6 +16,8 @@ * */ +#include <linux/usb/composite.h> + #include "mtu3.h" /* ep0 is always mtu3->in_eps[0] */ @@ -150,6 +152,7 @@ static void ep0_stall_set(struct mtu3_ep *mep0, bool set, u32 pktrdy) csr = (csr & ~EP0_SENDSTALL) | EP0_SENTSTALL; mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr); + mtu->delayed_status = false; mtu->ep0_state = MU3D_EP0_STATE_SETUP; dev_dbg(mtu->dev, "ep0: %s STALL, ep0_state: %s\n", @@ -656,6 +659,9 @@ stall: finish: if (mtu->test_mode) { ; /* nothing to do */ + } else if (handled == USB_GADGET_DELAYED_STATUS) { + /* handle the delay STATUS phase till receive ep_queue on ep0 */ + mtu->delayed_status = true; } else if (le16_to_cpu(setup.wLength) == 0) { /* no data stage */ mtu3_writel(mbase, U3D_EP0CSR, @@ -775,9 +781,6 @@ static int ep0_queue(struct mtu3_ep *mep, struct mtu3_request *mreq) dev_dbg(mtu->dev, "%s %s (ep0_state: %s), len#%d\n", __func__, mep->name, decode_ep0_state(mtu), mreq->request.length); - if (!list_empty(&mep->req_list)) - return -EBUSY; - switch (mtu->ep0_state) { case MU3D_EP0_STATE_SETUP: case MU3D_EP0_STATE_RX: /* control-OUT data */ @@ -789,6 +792,20 @@ static int ep0_queue(struct mtu3_ep *mep, struct mtu3_request *mreq) return -EINVAL; } + if (mtu->delayed_status) { + u32 csr; + + mtu->delayed_status = false; + csr = mtu3_readl(mtu->mac_base, U3D_EP0CSR) & EP0_W1C_BITS; + csr |= EP0_SETUPPKTRDY | EP0_DATAEND; + mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr); + /* needn't giveback the request for handling delay STATUS */ + return 0; + } + + if (!list_empty(&mep->req_list)) + return -EBUSY; + list_add_tail(&mreq->list, &mep->req_list); /* sequence #1, IN ... start writing the data */ |