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usb: mtu3: add a new function to do status stage

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Exact a new static function to do status stage

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1570611900-7112-1-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2019-10-09 17:04:59 +08:00 committed by Greg Kroah-Hartman
parent da4b5d18dd
commit 71460342d4
1 changed files with 12 additions and 11 deletions
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23
drivers/usb/mtu3/mtu3_gadget_ep0.c
View file

@ -153,6 +153,15 @@ static void ep0_stall_set(struct mtu3_ep *mep0, bool set, u32 pktrdy)
set ? "SEND" : "CLEAR", decode_ep0_state(mtu));
}
static void ep0_do_status_stage(struct mtu3 *mtu)
{
void __iomem *mbase = mtu->mac_base;
u32 value;
value = mtu3_readl(mbase, U3D_EP0CSR) & EP0_W1C_BITS;
mtu3_writel(mbase, U3D_EP0CSR, value | EP0_SETUPPKTRDY | EP0_DATAEND);
}
static int ep0_queue(struct mtu3_ep *mep0, struct mtu3_request *mreq);
static void ep0_dummy_complete(struct usb_ep *ep, struct usb_request *req)
@ -297,8 +306,7 @@ static int handle_test_mode(struct mtu3 *mtu, struct usb_ctrlrequest *setup)
ep0_load_test_packet(mtu);
/* send status before entering test mode. */
value = mtu3_readl(mbase, U3D_EP0CSR) & EP0_W1C_BITS;
mtu3_writel(mbase, U3D_EP0CSR, value | EP0_SETUPPKTRDY | EP0_DATAEND);
ep0_do_status_stage(mtu);
/* wait for ACK status sent by host */
readl_poll_timeout_atomic(mbase + U3D_EP0CSR, value,
@ -632,7 +640,6 @@ __acquires(mtu->lock)
{
struct usb_ctrlrequest setup;
struct mtu3_request *mreq;
void __iomem *mbase = mtu->mac_base;
int handled = 0;
ep0_read_setup(mtu, &setup);
@ -668,10 +675,7 @@ __acquires(mtu->lock)
mtu->delayed_status = true;
} else if (le16_to_cpu(setup.wLength) == 0) { /* no data stage */
mtu3_writel(mbase, U3D_EP0CSR,
(mtu3_readl(mbase, U3D_EP0CSR) & EP0_W1C_BITS)
| EP0_SETUPPKTRDY | EP0_DATAEND);
ep0_do_status_stage(mtu);
/* complete zlp request directly */
mreq = next_ep0_request(mtu);
if (mreq && !mreq->request.length)
@ -802,12 +806,9 @@ static int ep0_queue(struct mtu3_ep *mep, struct mtu3_request *mreq)
}
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);
ep0_do_status_stage(mtu);
/* needn't giveback the request for handling delay STATUS */
return 0;
}