On Mon, Nov 11, 2013 at 04:36:09PM +0200, Ivan T. Ivanov wrote:
>
> Hi Peter,
>
> On Mon, 2013-11-11 at 21:59 +0800, Peter Chen wrote:
> > On Mon, Nov 11, 2013 at 03:35:37PM +0200, Ivan T. Ivanov wrote:
> > > From: "Ivan T. Ivanov" <iivanov@xxxxxxxxxx>
> > >
> > > PHY drivers keep track of the current state of the hardware,
> > > so don't change PHY settings under it.
> > >
> > > Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx>
> > > ---
> > > drivers/usb/chipidea/ci_hdrc_msm.c | 9 ++-------
> > > 1 file changed, 2 insertions(+), 7 deletions(-)
> > >
> > > diff --git a/drivers/usb/chipidea/ci_hdrc_msm.c b/drivers/usb/chipidea/ci_hdrc_msm.c
> > > index e9624f3..338b209 100644
> > > --- a/drivers/usb/chipidea/ci_hdrc_msm.c
> > > +++ b/drivers/usb/chipidea/ci_hdrc_msm.c
> > > @@ -20,13 +20,11 @@
> > > static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
> > > {
> > > struct device *dev = ci->gadget.dev.parent;
> > > - int val;
> > >
> > > switch (event) {
> > > case CI_HDRC_CONTROLLER_RESET_EVENT:
> > > dev_dbg(dev, "CI_HDRC_CONTROLLER_RESET_EVENT received\n");
> > > - writel(0, USB_AHBBURST);
> > > - writel(0, USB_AHBMODE);
> > > + usb_phy_init(ci->transceiver);
> >
> > It will reset the PHY, but your comment is "don't change PHY settings under it"
>
> :-). This function is exported by PHY drivers, so they will know how
> to handle this change.
>
> >
> > > break;
> > > case CI_HDRC_CONTROLLER_STOPPED_EVENT:
> > > dev_dbg(dev, "CI_HDRC_CONTROLLER_STOPPED_EVENT received\n");
> > > @@ -34,10 +32,7 @@ static void ci_hdrc_msm_notify_event(struct ci_hdrc *ci, unsigned event)
> > > * Put the transceiver in non-driving mode. Otherwise host
> > > * may not detect soft-disconnection.
> > > */
> > > - val = usb_phy_io_read(ci->transceiver, ULPI_FUNC_CTRL);
> > > - val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
> > > - val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
> > > - usb_phy_io_write(ci->transceiver, val, ULPI_FUNC_CTRL);
> > > + usb_phy_notify_disconnect(ci->transceiver, USB_SPEED_UNKNOWN);
> >
> > Where you have implemented .notify_disconnect?
> > I have not found it at your phy driver.
>
> Yep, I will post PHY driver changes shortly. Meanwhile this should
> not break existing board file based platforms, because not of them
> could be compiled (HTC Dream, Halibut Board) and DT based platforms
> are sill work in progress.
>
Hi Ivan, I am going to apply this msm chipidea patchset, but the change
in this file is different with its original meaning. Have you
tested at existing platforms?
--
Best Regards,
Peter Chen
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