linux-kernel - Re: [PATCH 5/8] reset: amlogic: add reset status support

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]

Message-ID: <1jzfqogw2l.fsf@starbuckisacylon.baylibre.com>
Date: Thu, 11 Jul 2024 10:41:06 +0200
From: Jerome Brunet <jbrunet@...libre.com>
To: Stephen Boyd <sboyd@...nel.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>,  Philipp Zabel
 <p.zabel@...gutronix.de>,  Jan Dakinevich
 <jan.dakinevich@...utedevices.com>,  linux-kernel@...r.kernel.org,
  linux-amlogic@...ts.infradead.org,  linux-clk@...r.kernel.org
Subject: Re: [PATCH 5/8] reset: amlogic: add reset status support

On Wed 10 Jul 2024 at 15:40, Stephen Boyd <sboyd@...nel.org> wrote:

> Quoting Jerome Brunet (2024-07-10 09:25:14)
>> Add a callback to check the status of the level reset, as done in
>> the reset driver of the audio clock controller.
>
> Why? Presumably so that this driver has equivalent functionality to the
> reset code in the audio clk controller?

I thought the description was saying so. I'll be more explicit in v2

>
>> 
>> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
>> ---
>>  drivers/reset/reset-meson.c | 18 ++++++++++++++++++
>>  1 file changed, 18 insertions(+)
>> 
>> diff --git a/drivers/reset/reset-meson.c b/drivers/reset/reset-meson.c
>> index 3e0447366ba6..65ba9190cb53 100644
>> --- a/drivers/reset/reset-meson.c
>> +++ b/drivers/reset/reset-meson.c
>> @@ -69,6 +69,23 @@ static int meson_reset_level(struct reset_controller_dev *rcdev,
>>                                   BIT(bit), assert ? BIT(bit) : 0);
>>  }
>>  
>> +static int meson_reset_status(struct reset_controller_dev *rcdev,
>> +                             unsigned long id)
>> +{
>> +       struct meson_reset *data =
>> +               container_of(rcdev, struct meson_reset, rcdev);
>
> Nitpick: One line.
>
>> +       unsigned int val, offset, bit;
>> +
>> +       meson_reset_offset_and_bit(data, id, &offset, &bit);
>> +       offset += data->param->level_offset;
>> +
>> +       regmap_read(data->map, offset, &val);
>> +       val = !!(BIT(bit) & val);
>> +
>> +
>
> Nitpick: Drop the extra newline?
>
>> +       return val ^ data->param->level_low_reset;
>> +}
>> +
>>  static int meson_reset_assert(struct reset_controller_dev *rcdev,
>>                               unsigned long id)

-- 
Jerome