From: Sascha Hauer <s.hauer@pengutronix.de>
To: Peter Mamonov <pmamonov@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] ata: intf_platform_ide: add OF bindings
Date: Thu, 3 Sep 2015 20:13:52 +0200 [thread overview]
Message-ID: <20150903181352.GK18700@pengutronix.de> (raw)
In-Reply-To: <1441296258-4610-1-git-send-email-pmamonov@gmail.com>
On Thu, Sep 03, 2015 at 07:04:18PM +0300, Peter Mamonov wrote:
> Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
> ---
> drivers/ata/intf_platform_ide.c | 30 ++++++++++++++++++++++++++++--
> 1 file changed, 28 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/ata/intf_platform_ide.c b/drivers/ata/intf_platform_ide.c
> index 0d392d8..ba28f17 100644
> --- a/drivers/ata/intf_platform_ide.c
> +++ b/drivers/ata/intf_platform_ide.c
> @@ -29,6 +29,7 @@
> #include <ata_drive.h>
> #include <platform_ide.h>
> #include <linux/err.h>
> +#include <of.h>
>
> /**
> * Setup the register specific addresses for an ATA like divice
> @@ -87,8 +88,24 @@ static int platform_ide_probe(struct device_d *dev)
> int mmio = 0;
>
> if (pdata == NULL) {
> - dev_err(dev, "No platform data. Cannot continue\n");
> - return -EINVAL;
> + /* try to get platform data from the device tree */
> + struct device_node *dn = dev->device_node;
> + u32 tmp32;
> +
> + if (dn == NULL) {
> + dev_err(dev, "No platform data. Cannot continue\n");
> + return -EINVAL;
> + }
> +
> + pdata = xzalloc(sizeof(struct ide_port_info));
> +
> + if (of_property_read_bool(dn, "dataif-be"))
> + pdata->dataif_be = 1;
> +
> + if (of_property_read_u32(dn, "reg-shift", &tmp32) == 0)
> + pdata->ioport_shift = (unsigned)tmp32;
No need to allocate extra memory for platform_data which is solely used
in this function. Please just use two local variables dataif_be and
ioport_shift which you either fill in from platform_data or from device
tree.
Sascha
--
Pengutronix e.K. | |
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next prev parent reply other threads:[~2015-09-03 18:14 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-03 13:38 Peter Mamonov
2015-09-03 14:24 ` Antony Pavlov
2015-09-03 15:33 ` Peter Mamonov
2015-09-03 16:04 ` Peter Mamonov
2015-09-03 18:13 ` Sascha Hauer [this message]
2015-09-07 15:44 ` [PATCHv2] " Peter Mamonov
2015-09-07 15:53 ` Lucas Stach
2015-09-07 16:43 ` [PATCHv3] " Peter Mamonov
2015-09-09 6:54 ` Sascha Hauer
2015-09-03 15:46 ` [PATCH] " Lucas Stach
2015-09-03 16:31 ` Antony Pavlov
2015-09-03 18:16 ` Sascha Hauer
2015-09-04 10:15 ` Peter Mamonov
2015-09-04 9:40 ` Peter Mamonov
2015-09-04 10:23 ` Lucas Stach
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