From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
To: Chris Brandt <Chris.Brandt@renesas.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Simon Horman <horms@verge.net.au>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-renesas-soc@vger.kernel.org"
<linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH v2 05/15] phy: renesas: rcar-gen3-usb2: Check dr_mode when not using OTG
Date: Sat, 11 May 2019 10:39:40 +0300 [thread overview]
Message-ID: <711839c7-930f-938e-4626-8a7524f5b82e@cogentembedded.com> (raw)
In-Reply-To: <TY1PR01MB15628A94DA371A7636984A708A0C0@TY1PR01MB1562.jpnprd01.prod.outlook.com>
On 10.05.2019 16:55, Chris Brandt wrote:
>>> + } else {
>>> + /* Not OTG, so dr_mode should be set in PHY node */
>>> + mode = usb_get_dr_mode(channel->dev);
>>> + if (mode == USB_DR_MODE_HOST)
>>> + writel(0x00000000, usb2_base + USB2_COMMCTRL);
>>> + else if (mode == USB_DR_MODE_PERIPHERAL)
>>> + writel(0x80000000, usb2_base + USB2_COMMCTRL);
>>
>> Maybe a *switch* instead?
>
> I like that idea because I can get rid of the dr_mode variable.
Yes. :-)
> However...
> I just tried it, but if I only have a case for HOST and PERIPHERAL, I
> get this gcc warning:
>
> warning: enumeration value ‘USB_DR_MODE_UNKNOWN’ not handled in switch [-Wswitch]
> warning: enumeration value ‘USB_DR_MODE_OTG’ not handled in switch [-Wswitch]
>
>
> So, my code would have to be:
>
> } else {
> /* Not OTG, so dr_mode should be set in PHY node */
> switch (usb_get_dr_mode(channel->dev)) {
> case USB_DR_MODE_HOST:
> writel(0x00000000, usb2_base + USB2_COMMCTRL);
> break;
> case USB_DR_MODE_PERIPHERAL:
> writel(0x80000000, usb2_base + USB2_COMMCTRL);
> break;
> case USB_DR_MODE_UNKNOWN:
> case USB_DR_MODE_OTG:
Maybe default: instead?
> break;
> }
> }
>
> I guess that is still OK.
Yes. :-)
> Chris
MBR, Sergei
next prev parent reply other threads:[~2019-05-11 7:39 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-09 20:11 [PATCH v2 00/15] usb: Add host and device support for RZ/A2 Chris Brandt
2019-05-09 20:11 ` [PATCH v2 01/15] ARM: dts: r7s9210: Add USB clock Chris Brandt
2019-05-13 12:25 ` Simon Horman
2019-05-09 20:11 ` [PATCH v2 02/15] ARM: dts: rza2mevb: Add 48MHz " Chris Brandt
2019-05-13 12:26 ` Simon Horman
2019-05-09 20:11 ` [PATCH v2 03/15] phy: renesas: rcar-gen3-usb2: detect usb_x1 clock Chris Brandt
2019-05-10 1:57 ` Chunfeng Yun
2019-05-10 13:17 ` Chris Brandt
2019-05-10 4:17 ` Yoshihiro Shimoda
2019-05-10 6:56 ` Geert Uytterhoeven
2019-05-09 20:11 ` [PATCH v2 04/15] dt-bindings: rcar-gen3-phy-usb2: Document use of usb_x1 Chris Brandt
2019-05-10 4:38 ` Yoshihiro Shimoda
2019-05-10 6:55 ` Geert Uytterhoeven
2019-05-13 21:07 ` Chris Brandt
2019-05-13 21:12 ` Geert Uytterhoeven
2019-05-13 21:24 ` Chris Brandt
2019-05-09 20:11 ` [PATCH v2 05/15] phy: renesas: rcar-gen3-usb2: Check dr_mode when not using OTG Chris Brandt
2019-05-10 8:36 ` Sergei Shtylyov
2019-05-10 13:55 ` Chris Brandt
2019-05-11 7:39 ` Sergei Shtylyov [this message]
2019-05-11 12:05 ` Chris Brandt
2019-05-09 20:11 ` [PATCH v2 06/15] dt-bindings: rcar-gen3-phy-usb2: Document dr_mode Chris Brandt
2019-05-09 20:11 ` [PATCH v2 07/15] dt-bindings: rcar-gen3-phy-usb2: Add r7s9210 support Chris Brandt
2019-05-09 20:11 ` [PATCH v2 08/15] usb: renesas_usbhs: move flags macros Chris Brandt
2019-05-10 1:59 ` Chunfeng Yun
2019-05-10 8:41 ` Sergei Shtylyov
2019-05-10 14:00 ` Chris Brandt
2019-05-09 20:11 ` [PATCH v2 09/15] usb: renesas_usbhs: add support for CNEN bit Chris Brandt
2019-05-09 20:11 ` [PATCH v2 10/15] usb: renesas_usbhs: support byte addressable CFIFO Chris Brandt
2019-05-09 20:11 ` [PATCH v2 11/15] usb: renesas_usbhs: Add support for RZ/A2 Chris Brandt
2019-05-10 1:53 ` Chunfeng Yun
2019-05-10 13:10 ` Chris Brandt
2019-05-10 7:07 ` Geert Uytterhoeven
2019-05-10 8:16 ` Yoshihiro Shimoda
2019-05-10 11:00 ` Yoshihiro Shimoda
2019-05-10 14:20 ` Chris Brandt
2019-05-09 20:11 ` [PATCH v2 12/15] dt-bindings: usb: renesas_usbhs: Add support for r7s9210 Chris Brandt
2019-05-09 20:11 ` [PATCH v2 13/15] ARM: dts: r7s9210: Add USB Host support Chris Brandt
2019-05-09 20:11 ` [PATCH v2 14/15] ARM: dts: r7s9210: Add USB Device support Chris Brandt
2019-05-09 20:11 ` [PATCH v2 15/15] ARM: dts: rza2mevb: Add USB host support Chris Brandt
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