From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UsxjA-0001W5-AS for barebox@lists.infradead.org; Sat, 29 Jun 2013 16:10:21 +0000 Date: Sat, 29 Jun 2013 18:09:57 +0200 From: Sascha Hauer Message-ID: <20130629160957.GR516@pengutronix.de> References: <1372152047-28134-1-git-send-email-sebastian.hesselbarth@gmail.com> <1372152047-28134-8-git-send-email-sebastian.hesselbarth@gmail.com> <20130629142857.GC10414@pengutronix.de> <20130629143146.GD10414@pengutronix.de> <51CF0560.2050902@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <51CF0560.2050902@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH 7/9] OF: remove device and resource pointer from struct device_node To: Sebastian Hesselbarth Cc: barebox@lists.infradead.org On Sat, Jun 29, 2013 at 06:03:44PM +0200, Sebastian Hesselbarth wrote: > On 06/29/2013 04:31 PM, Sascha Hauer wrote: > >On Sat, Jun 29, 2013 at 04:28:57PM +0200, Sascha Hauer wrote: > >>On Tue, Jun 25, 2013 at 11:20:45AM +0200, Sebastian Hesselbarth wrote: > >>>diff --git a/drivers/of/gpio.c b/drivers/of/gpio.c > >>>index 41e91ec..7f6d99c 100644 > >>>--- a/drivers/of/gpio.c > >>>+++ b/drivers/of/gpio.c > >>>@@ -10,6 +10,10 @@ int of_get_named_gpio(struct device_node *np, > >>> { > >>> int ret; > >>> struct of_phandle_args out_args; > >>>+ struct device_d *dev = of_find_device_by_node(np); > >>>+ > >>>+ if (!dev) > >>>+ return -EINVAL; > >>> > >>> ret = of_parse_phandle_with_args(np, propname, "#gpio-cells", > >>> index,&out_args); > >>>@@ -18,7 +22,7 @@ int of_get_named_gpio(struct device_node *np, > >>> return -EINVAL; > >>> } > >>> > >>>- ret = gpio_get_num(out_args.np->device, out_args.args[0]); > >>>+ ret = gpio_get_num(dev, out_args.args[0]); > >> > >>This doesn't work. What gpio_get_num needs is the device pointer from > >>the gpio device, not from the device from the node we pass to this > >>function. You would have to use of_find_device_by_node(out_args.np) here > >>I guess. > > > >Apart from this of_find_device_by_node() only works on platform_devices, > >so this will break calling of_get_named_gpio on i2c gpio expanders. > > Ok, to work on this I would have to have something to test with. MVEBU > DT is still at a very early stage. So for now, I guess removing the > device pointer is a bit early? Probably, yes. I think the solution would be to adjust gpio_get_num() so that it takes a device_node as argument instead of a device. > I will also have to have a close look > into i2c core what makes those devices special here. I may be wrong here. In the kernel of_find_device_by_node() works only for platform_devices, but since you do for_each_device(), it should work for i2c devices in barebox aswell. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox