From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Kleine-Budde Subject: Re: [PATCH] can: flexcan: add PM support Date: Tue, 08 May 2012 17:18:34 +0200 Message-ID: <4FA9394A.90303@pengutronix.de> References: <1336489937-29645-1-git-send-email-eric@eukrea.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigF503079A761B24D5AA0D5D6D" Return-path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:44593 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755671Ab2EHPSo (ORCPT ); Tue, 8 May 2012 11:18:44 -0400 In-Reply-To: <1336489937-29645-1-git-send-email-eric@eukrea.com> Sender: linux-can-owner@vger.kernel.org List-ID: To: =?UTF-8?B?RXJpYyBCw6luYXJk?= Cc: linux-can@vger.kernel.org, Sascha Hauer , Wolfgang Grandegger This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigF503079A761B24D5AA0D5D6D Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 05/08/2012 05:12 PM, Eric B=C3=A9nard wrote: > tested on an i.MX257 What about the transceiver? Does is make sense to switch it off, too? Marc > Signed-off-by: Eric B=C3=A9nard > --- > drivers/net/can/flexcan.c | 38 +++++++++++++++++++++++++++++++++++++= + > 1 files changed, 38 insertions(+), 0 deletions(-) >=20 > diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c > index 1efb083..0d058b0 100644 > --- a/drivers/net/can/flexcan.c > +++ b/drivers/net/can/flexcan.c > @@ -1050,6 +1050,42 @@ static struct of_device_id flexcan_of_match[] =3D= { > {}, > }; > =20 > +#ifdef CONFIG_PM > +static int flexcan_suspend(struct platform_device *pdev, pm_message_t = state) > +{ > + struct net_device *dev =3D platform_get_drvdata(pdev); > + struct flexcan_priv *priv =3D netdev_priv(dev); > + > + flexcan_chip_disable(priv); > + > + if (netif_running(dev)) { > + netif_stop_queue(dev); > + netif_device_detach(dev); > + } > + priv->can.state =3D CAN_STATE_SLEEPING; > + > + return 0; > +} > + > +static int flexcan_resume(struct platform_device *pdev) > +{ > + struct net_device *dev =3D platform_get_drvdata(pdev); > + struct flexcan_priv *priv =3D netdev_priv(dev); > + > + priv->can.state =3D CAN_STATE_ERROR_ACTIVE; > + if (netif_running(dev)) { > + netif_device_attach(dev); > + netif_start_queue(dev); > + } > + flexcan_chip_enable(priv); > + > + return 0; > +} > +#else > +#define flexcan_suspend NULL > +#define flexcan_resume NULL > +#endif > + > static struct platform_driver flexcan_driver =3D { > .driver =3D { > .name =3D DRV_NAME, > @@ -1058,6 +1094,8 @@ static struct platform_driver flexcan_driver =3D = { > }, > .probe =3D flexcan_probe, > .remove =3D __devexit_p(flexcan_remove), > + .suspend =3D flexcan_suspend, > + .resume =3D flexcan_resume, > }; > =20 > module_platform_driver(flexcan_driver); --=20 Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | --------------enigF503079A761B24D5AA0D5D6D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk+pOU8ACgkQjTAFq1RaXHP7NACgk+R6j6F4UfyCYZlQR9lSPZuY tSsAnA7lymjPYTjP/F1Z/DJQsksZluhn =EYhA -----END PGP SIGNATURE----- --------------enigF503079A761B24D5AA0D5D6D--