linux-kernel - Re: [PATCH v12 1/2] leds: core: Introduce LED pattern trigger

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Message-ID: <CAMz4kuJx9twJ=wM5qsucV3JH_VS-AC1aWMqpQOwAMkCuKBHLRg@mail.gmail.com>
Date:   Fri, 21 Sep 2018 11:31:26 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>
Cc:     rteysseyre@...il.com, Bjorn Andersson <bjorn.andersson@...aro.org>,
        Baolin Wang <baolin.wang@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v12 1/2] leds: core: Introduce LED pattern trigger

Hi Jacek and Pavel,

On 11 September 2018 at 10:47, Baolin Wang <baolin.wang@...aro.org> wrote:
> This patch adds one new led trigger that LED device can configure
> the software or hardware pattern and trigger it.
>
> Consumers can write 'pattern' file to enable the software pattern
> which alters the brightness for the specified duration with one
> software timer.
>
> Moreover consumers can write 'hw_pattern' file to enable the hardware
> pattern for some LED controllers which can autonomously control
> brightness over time, according to some preprogrammed hardware
> patterns.
>
> Signed-off-by: Raphael Teysseyre <rteysseyre@...il.com>
> Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
> ---
> Changes from v11:
>  - Change -1 means repeat indefinitely.
>
> Changes from v10:
>  - Change 'int' to 'u32' for delta_t field.
>
> Changes from v9:
>  - None.
>
> Changes from v8:
>  - None.
>
> Changes from v7:
>  - Move the SC27XX hardware patterns description into its own ABI file.
>
> Changes from v6:
>  - Improve commit message.
>  - Optimize the description of the hw_pattern file.
>  - Simplify some logics.
>
> Changes from v5:
>  - Add one 'hw_pattern' file for hardware patterns.
>
> Changes from v4:
>  - Change the repeat file to return the originally written number.
>  - Improve comments.
>  - Fix some build warnings.
>
> Changes from v3:
>  - Reset pattern number to 0 if user provides incorrect pattern string.
>  - Support one pattern.
>
> Changes from v2:
>  - Remove hardware_pattern boolen.
>  - Chnage the pattern string format.
>
> Changes from v1:
>  - Use ATTRIBUTE_GROUPS() to define attributes.
>  - Introduce hardware_pattern flag to determine if software pattern
>  or hardware pattern.
>  - Re-implement pattern_trig_store_pattern() function.
>  - Remove pattern_get() interface.
>  - Improve comments.
>  - Other small optimization.
> ---

Do you have any comments for the v12 patch set? Thanks.

-- 
Baolin Wang
Best Regards