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usb: mtu3: enable SETUPENDISR interrupt

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If the controller receives a new SETUP during SETUP data stage,
and will generate SETUPENDISR interrupt, the driver should abort
the current SETUP command and process the new one.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2018-11-29 10:34:35 +08:00 committed by Greg Kroah-Hartman
parent e802972433
commit 94552090cd
3 changed files with 7 additions and 2 deletions
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2
drivers/usb/mtu3/mtu3_core.c
View File

@ -484,7 +484,7 @@ void mtu3_ep0_setup(struct mtu3 *mtu)
mtu3_writel(mtu->mac_base, U3D_EP0CSR, csr);
/* Enable EP0 interrupt */
mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR);
mtu3_writel(mtu->mac_base, U3D_EPIESR, EP0ISR | SETUPENDISR);
}
static int mtu3_mem_alloc(struct mtu3 *mtu)

6
drivers/usb/mtu3/mtu3_gadget_ep0.c
View File

@ -692,9 +692,13 @@ irqreturn_t mtu3_ep0_isr(struct mtu3 *mtu)
mtu3_writel(mbase, U3D_EPISR, int_status); /* W1C */
/* only handle ep0's */
if (!(int_status & EP0ISR))
if (!(int_status & (EP0ISR | SETUPENDISR)))
return IRQ_NONE;
/* abort current SETUP, and process new one */
if (int_status & SETUPENDISR)
mtu->ep0_state = MU3D_EP0_STATE_SETUP;
csr = mtu3_readl(mbase, U3D_EP0CSR);
dev_dbg(mtu->dev, "%s csr=0x%x\n", __func__, csr);

1
drivers/usb/mtu3/mtu3_hw_regs.h
View File

@ -104,6 +104,7 @@
/* U3D_EPISR */
#define EPRISR(x) (BIT(16) << (x))
#define SETUPENDISR BIT(16)
#define EPTISR(x) (BIT(0) << (x))
#define EP0ISR BIT(0)