From: Nithin Sujir <nsujir@broadcom.com>
Date: Mon, 29 Jul 2013 20:58:38 +0000 (-0700)
Subject: tg3: Enable support for timesync gpio output
X-Git-Tag: v3.12-rc1~132^2~432
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92e6457d4cf68ef69bc4f98330c93e198df06a43;p=pandora-kernel.git

tg3: Enable support for timesync gpio output

The PTP_CAPABLE tg3 devices have a gpio output that is toggled when the
free running counter matches a watchdog value. This patch adds support
to set the watchdog and enable this feature.

Since the output is controlled via bits in the EAV_REF_CLCK_CTL
register, we have to read-modify-write it when we stop/resume.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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