From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
To: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Baolu Lu <baolu.lu@linux.intel.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/8] usb: dwc3: add ULPI interface support
Date: Mon, 26 Jan 2015 13:46:10 +0200 [thread overview]
Message-ID: <20150126114610.GA28539@kuha.fi.intel.com> (raw)
In-Reply-To: <20150123162443.GH8585@saruman.tx.rr.com>
On Fri, Jan 23, 2015 at 10:24:43AM -0600, Felipe Balbi wrote:
> On Fri, Jan 23, 2015 at 05:12:56PM +0200, Heikki Krogerus wrote:
> > +int dwc3_ulpi_init(struct dwc3 *dwc)
> > +{
> > + u32 reg;
> > +
> > + /* First check USB2 PHY interface type */
> > + switch (DWC3_GHWPARAMS3_HSPHY_IFC(dwc->hwparams.hwparams3)) {
> > + case DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI:
> > + /* Select ULPI Interface */
> > + reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
> > + reg |= DWC3_GUSB2PHYCFG_ULPI_UTMI;
> > + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
> > + /* FALLTHROUGH */
> > + case DWC3_GHWPARAMS3_HSPHY_IFC_ULPI:
> > + break;
> > + default:
> > + return 0;
> > + }
> > +
> > + /* Register the interface */
> > + dwc->ulpi = ulpi_register_interface(dwc->dev, &dwc3_ulpi);
> > + if (IS_ERR(dwc->ulpi)) {
>
> so, this will only build and link if DWC3_ULPI is enabled, in case of
> error you return early...
>
> > + dev_err(dwc->dev, "failed to register ULPI interface");
> > + return PTR_ERR(dwc->ulpi);
> > + }
> > +
> > + return 0;
> > +}
> > +
> > +void dwc3_ulpi_exit(struct dwc3 *dwc)
> > +{
> > + if (dwc->ulpi) {
>
> ... looks like this branch is unnecessary.
We can't do that, or distros that select DWC3_ULPI option can only use
dwc3 with hardware that really has ULPI PHY. So I guess we'll drop the
DWC3_ULPI option and build the dwc3 ulpi support always if ULPI bus is
enabled. OK?
Thanks,
--
heikki
next prev parent reply other threads:[~2015-01-26 11:46 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-23 15:12 [PATCH 0/8] usb: ulpi bus Heikki Krogerus
2015-01-23 15:12 ` [PATCH 1/8] usb: add bus type for USB ULPI Heikki Krogerus
2015-01-29 5:02 ` Felipe Balbi
2015-01-29 14:18 ` Heikki Krogerus
2015-02-13 1:44 ` Stephen Boyd
2015-02-13 11:24 ` Heikki Krogerus
2015-01-23 15:12 ` [PATCH 2/8] usb: dwc3: USB2 PHY register access bits Heikki Krogerus
2015-01-23 15:12 ` [PATCH 3/8] usb: dwc3: store driver data earlier Heikki Krogerus
2015-01-23 15:12 ` [PATCH 4/8] usb: dwc3: cache hwparams earlier Heikki Krogerus
2015-01-23 15:12 ` [PATCH 5/8] usb: dwc3: ULPI or UTMI+ select Heikki Krogerus
2015-01-23 15:12 ` [PATCH 6/8] usb: dwc3: add ULPI interface support Heikki Krogerus
2015-01-23 16:24 ` Felipe Balbi
2015-01-26 11:46 ` Heikki Krogerus [this message]
2015-01-26 19:35 ` Felipe Balbi
2015-01-27 11:09 ` Heikki Krogerus
2015-01-27 15:24 ` Felipe Balbi
2015-02-11 19:34 ` David Cohen
2015-02-12 12:12 ` Heikki Krogerus
2015-02-13 1:41 ` David Cohen
2015-02-13 1:54 ` David Cohen
2015-02-13 13:16 ` Heikki Krogerus
2015-02-13 22:03 ` David Cohen
2015-02-13 22:04 ` Felipe Balbi
2015-01-23 15:12 ` [PATCH 7/8] phy: helpers for USB ULPI PHY registering Heikki Krogerus
2015-01-29 5:03 ` Felipe Balbi
2015-01-29 14:34 ` Heikki Krogerus
2015-01-29 16:11 ` Felipe Balbi
2015-01-30 10:33 ` Heikki Krogerus
2015-01-30 16:03 ` Felipe Balbi
2015-01-23 15:12 ` [PATCH 8/8] phy: add driver for TI TUSB1210 ULPI PHY Heikki Krogerus
2015-01-24 23:58 ` David Cohen
2015-01-26 12:55 ` Heikki Krogerus
2015-01-26 19:23 ` David Cohen
2015-01-27 9:28 ` Heikki Krogerus
2015-01-27 12:57 ` Heikki Krogerus
2015-01-27 17:38 ` David Cohen
2015-01-28 14:20 ` Heikki Krogerus
2015-01-28 18:02 ` David Cohen
2015-01-29 14:14 ` Heikki Krogerus
2015-01-29 16:20 ` Felipe Balbi
2015-01-29 18:02 ` David Cohen
2015-01-30 12:18 ` Heikki Krogerus
2015-01-30 16:09 ` David Cohen
2015-02-02 12:50 ` Heikki Krogerus
2015-01-30 9:29 ` Heikki Krogerus
2015-01-30 16:14 ` Felipe Balbi
2015-01-30 16:25 ` David Cohen
2015-01-30 16:30 ` Felipe Balbi
2015-01-30 16:20 ` David Cohen
2015-01-30 16:33 ` Felipe Balbi
2015-02-02 12:59 ` Heikki Krogerus
2015-02-03 11:37 ` Heikki Krogerus
2015-02-10 18:33 ` David Cohen
2015-02-10 19:05 ` David Cohen
2015-02-10 19:23 ` David Cohen
2015-02-11 13:12 ` Heikki Krogerus
2015-02-11 19:36 ` David Cohen
2015-02-13 22:02 ` David Cohen
2015-02-13 22:03 ` Felipe Balbi
2015-02-13 22:13 ` David Cohen
2015-01-29 5:09 ` Felipe Balbi
2015-01-29 14:30 ` Heikki Krogerus
2015-01-29 16:20 ` Felipe Balbi
2015-01-29 18:04 ` David Cohen
2015-01-29 18:25 ` David Cohen
2015-01-29 18:47 ` David Cohen
2015-01-30 10:30 ` Heikki Krogerus
2015-02-13 1:52 ` David Cohen
2015-02-13 12:35 ` Heikki Krogerus
2015-02-13 16:01 ` Felipe Balbi
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