Re: [PATCH] usb, davinci: remove USB_MUSB_* defines in davinci usb setup

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Hello.

On 24-11-2011 13:30, Felipe Balbi wrote:

commit 622859634a663c5e55d0e2a2cdbb55ac058d97b3
Author: Felipe Balbi<balbi@xxxxxx>
Date:   Wed Jun 22 17:28:09 2011 +0300

     usb: musb: drop a gigantic amount of ifdeferry

dropped a lot of ifdefs, also the USB_MUSB_HOST, USB_MUSB_PERIPHERAL
and USB_MUSB_OTG defines, which are used in arch/arm/mach-davinci/usb.c

Drop them in arch/arm/mach-davinci/usb.c and set otg as mode.

Signed-off-by: Heiko Schocher<hs@xxxxxxx>
Cc: Felipe Balbi<balbi@xxxxxx>
Cc: Sergei Shtylyov<sshtylyov@xxxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Cc: Wolfgang Denk<wd@xxxxxxx>
---
patch checked with checkpatch, no errors/warnigs

[...]

diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
index 23d2b6d..6f72b6a 100644
--- a/arch/arm/mach-davinci/usb.c
+++ b/arch/arm/mach-davinci/usb.c
@@ -42,14 +42,7 @@ static struct musb_hdrc_config musb_config = {
  };

  static struct musb_hdrc_platform_data usb_data = {
-#if defined(CONFIG_USB_MUSB_OTG)
-	/* OTG requires a Mini-AB connector */
  	.mode           = MUSB_OTG,
-#elif defined(CONFIG_USB_MUSB_PERIPHERAL)
-	.mode           = MUSB_PERIPHERAL,
-#elif defined(CONFIG_USB_MUSB_HOST)
-	.mode           = MUSB_HOST,
-#endif
  	.clock		= "usb",
  	.config		=&musb_config,
  };

    This is not a correct patch. DM644x EVM board for example doesn't
have OTG connector, only host, so we need more subtle logic here.
Maybe I'll come up with something when I'm back from vacations next
week...

it doesn't have the connector, but the underlying HW is OTG-capable. We
could hack a host cable to unground ID-pin

    The ID pin is just not the part of the connector I think -- it's
normal 4-signal A-type receptacle, not mini- or micro- one.

and have peripheral side working for instance.

    Then what's the point of the '.mode' field at all -- if we could
hack the hardware anyway?

no point whatsoever, do you want to send a patch removing that ?

   Well, I'm lacking the time to do it...

WBR, Sergei
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