[PATCH 1/2] usb: dwc2: Extract USB DWC2 register definitions

[Kongyang Liu]

Marek Vasut <marex at denx.de> 于2024年6月23日周日 07:49写道：
>
> On 5/22/24 4:22 PM, Kongyang Liu wrote:
>
> Hi,
>
> sorry for the late reply.
>
> > diff --git a/drivers/usb/common/dwc2_core.c b/drivers/usb/common/dwc2_core.c
> > new file mode 100644
> > index 0000000000..2fa11fd59d
> > --- /dev/null
> > +++ b/drivers/usb/common/dwc2_core.c
> > @@ -0,0 +1,53 @@
> > +// SPDX-License-Identifier: GPL-2.0+
> > +/*
> > + * Copyright (c) 2024, Kongyang Liu <seashell11234455 at gmail.com>
> > + */
> > +
> > +#include <linux/bitfield.h>
> > +#include <linux/errno.h>
> > +#include <linux/io.h>
> > +#include <wait_bit.h>
> > +
> > +#include "dwc2_core.h"
> > +
> > +void dwc2_flush_tx_fifo(struct dwc2_core_regs *regs, const int num)
> > +{
> > +     int ret;
> > +
> > +     log_debug("Flush Tx FIFO %d\n", num);
> > +
> > +     /* Wait for AHB master IDLE state */
> > +     ret = wait_for_bit_le32(&regs->global_regs.grstctl, GRSTCTL_AHBIDLE, true, 1000, false);
>
> Just a quick design point, would it be possible to split this patch into
> two, one which adds this .global_regs and changes the code accordingly,
> and another which does the code refactoring/move ? That would make it
> easier to review.

This patch only extracts the common parts of the host mode and gadget
mode, without any code refactoring. Could you please describe more clearly
how the patch should be split?

Best regards
Kongyang Liu