linux-kernel - Re: [PATCH v6 6/8] mfd: cros_ec: Support multiple EC in a system

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] [day] [month] [year] [list]

Date:	Tue, 09 Jun 2015 13:07:18 +0200
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Olof Johansson <olof@...om.net>, Lee Jones <lee.jones@...aro.org>
CC:	Samuel Ortiz <sameo@...ux.intel.com>,
	Doug Anderson <dianders@...omium.org>,
	Bill Richardson <wfrichar@...omium.org>,
	Simon Glass <sjg@...gle.com>,
	Gwendal Grignou <gwendal@...gle.com>,
	Stephen Barber <smbarber@...omium.org>,
	Filipe Brandenburger <filbranden@...gle.com>,
	Todd Broch <tbroch@...omium.org>,
	Alexandru M Stan <amstan@...omium.org>,
	Heiko Stuebner <heiko@...ech.de>,
	linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, Gwendal Grignou <gwendal@...omium.org>
Subject: Re: [PATCH v6 6/8] mfd: cros_ec: Support multiple EC in a system

Hello Olof,

On 06/08/2015 10:46 PM, Olof Johansson wrote:
> On Fri, Jun 05, 2015 at 11:17:30AM +0100, Lee Jones wrote:
>> On Thu, 04 Jun 2015, Javier Martinez Canillas wrote:
>> 
>> > From: Gwendal Grignou <gwendal@...omium.org>
>> > 
>> > Chromebooks can have more than one Embedded Controller so the
>> > cros_ec device id has to be incremented for each EC registered.
>> > 
>> > Add a new structure to represent multiple EC as different char
>> > devices (e.g: /dev/cros_ec, /dev/cros_pd). It connects to
>> > cros_ec_device and allows sysfs inferface for cros_pd.
>> > 
>> > Also reduce number of allocated objects, make chromeos sysfs
>> > class object a static and add refcounting to prevent object
>> > deletion while command is in progress.
>> > 
>> > Signed-off-by: Gwendal Grignou <gwendal@...omium.org>
>> > Reviewed-by: Dmitry Torokhov <dtor@...omium.org>
>> > Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
>> > Tested-by: Heiko Stuebner <heiko@...ech.de>
>> > ---
>> > 
>> > Changes since v5:
>> >  - Don't allow to change the device name from DT. Suggested by Lee Jones.
>> >  - Expand error messages in case of mfd_add_devices() failure.
>> >    Suggested by Lee Jones.
>> > 
>> > Changes since v4:
>> >  - Use cros-ec-name DT property instead of devname. Suggested by Lee Jones.
>> >  - Pass PLATFORM_DEVID_AUTO directly to mfd_add_devices().
>> >    Suggested by Lee Jones.
>> >  - Add Heiko Stuebner tested-by tag.
>> >  - Fix get_version by passing the cmd_offset to EC_CMD_GET_VERSION.
>> > 
>> > Changes since v3:
>> >  - Add defines for the EC and PD index constants.
>> >  - Remove cros_ec_dev_register() and declare the mfd_cells as static structs.
>> >    Suggested by Lee Jones.
>> >  - Add a new line before the return statement in cros_ec_dev_register().
>> >    Suggested by Lee Jones.
>> > 
>> > Changes since v2: None
>> > 
>> > Changes since v1:
>> >   - Squash patch that adds support to represent EC's as different
>> >     char devices (e.g: /dev/cros_ec, /dev/cros_pd):
>> >     https://chromium-review.googlesource.com/#/c/217297/
>> >     Suggested by Gwendal Grignou
>> >   - Use cros_ec instead of cros-ec in the subject line to be consistent.
>> >     Suggested by Gwendal Grignou
>> > ---
>> >  drivers/input/keyboard/cros_ec_keyb.c      |   2 +-
>> >  drivers/mfd/cros_ec.c                      |  52 ++++++++++--
>> >  drivers/mfd/cros_ec_i2c.c                  |   1 -
>> >  drivers/mfd/cros_ec_spi.c                  |   1 -
>> >  drivers/platform/chrome/cros_ec_dev.c      | 130 ++++++++++++++++++++---------
>> >  drivers/platform/chrome/cros_ec_dev.h      |   7 --
>> >  drivers/platform/chrome/cros_ec_lightbar.c |  75 +++++++++--------
>> >  drivers/platform/chrome/cros_ec_lpc.c      |   1 -
>> >  drivers/platform/chrome/cros_ec_sysfs.c    |  48 +++++------
>> >  include/linux/mfd/cros_ec.h                |  44 ++++++++--
>> >  10 files changed, 234 insertions(+), 127 deletions(-)
>> 
>> For my own reference:
>>   Acked-by: Lee Jones <lee.jones@...aro.org>
>> 
>> Let me know when you have all the appropriate Acks and I'll apply the
>> set.
> 
> Whole series:
> 
> Acked-by: Olof Johansson <olof@...om.net>
> 
> I'm OK with this going through the mfd tree, since there's nothing queued up
> for chrome-platform that this would conflict with.
>

Thanks a lot for the acks, I'll resend a v7 with your Acked-by tags and
fixing a small nit Lee pointed out on patch 6/8.

> 
> -Olof
>

Best regards,
Javier
--
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/