lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 3 Apr 2014 14:38:33 +0300
From:	"mika.westerberg@...ux.intel.com" <mika.westerberg@...ux.intel.com>
To:	"Pallala, Ramakrishna" <ramakrishna.pallala@...el.com>
Cc:	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linaro-acpi@...ts.linaro.org" <linaro-acpi@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: How to pass I2C platform_data under ACPI

On Thu, Apr 03, 2014 at 11:25:34AM +0000, Pallala, Ramakrishna wrote:
> >> In non ACPI environment I used to initialize the platform_data under 
> >> board or platforms files. Under ACPI how do I do that?
> >
> >If you can't extract that information from ACPI namespace, then one option is to pass platform data along with the device ACPI ID:
> >
> >static const struct acpi_device_id my_acpi_match[] = {
> >	{ "MYID0001", (kernel_ulong_t)&my_platform_data }
> >	...
> >	{ },
> >};
> 
> Thanks for the Quick reply.
> 
> So If I  want to use different platform_data for different boards can I
> do something like below?

Exactly.

> And initialize the platform data in either driver or in separate module
> which gets compiled along with driver?

Typically it has been done in the same driver but I don't see any problems
having a separate module as well.

> static const struct acpi_device_id my_acpi_match[] = {
> 	{ "MYID0001", (kernel_ulong_t)&my_platform_data1 }
> 	{ "MYID0002", (kernel_ulong_t)&my_platform_data2 }
> 	...
> 	{ },
> 
> Thanks,
> Ram
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists