linux-kernel - Re: [PATCH v4 0/3] Add support for the TLC5925

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Message-ID: <CAHp75Vd29e55B7MFfg5A4RLkCzhKbE3FxcnESV2hNxYLA+OWGw@mail.gmail.com>
Date:   Tue, 14 Jun 2022 16:53:13 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Cc:     Pavel Machek <pavel@....cz>, krzk+dt@...nel.org,
        Rob Herring <robh+dt@...nel.org>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 0/3] Add support for the TLC5925

On Tue, Jun 14, 2022 at 4:27 PM Jean-Jacques Hiblot
<jjhiblot@...phandler.com> wrote:
>
> This series add the support for the TLC5925 LED controller.

adds

> This LED controller is driven though SPI. There is little internal logic

through

> and it can be thought of as a deserializer + latches.

> The TLC5925 itself drives up to 16 LEDs, but multiple TLC5925s can be
> chained to drive more.
>
> The first patch describes the dt bindings.
> The second patch implements most of the driver and supports only
> synchronous brightness setting (brightness_set_blocking).
> The last patch implements the non-blocking version (brightness_set).

Much better, I have a few comments and I believe next version will be final.

> changes v3->v4:
>  * add missing MODULE_DEVICE_TABLE(of, ...)
>  * use dev_err_probe() to avoid spaming the log in case of deferred probe

spamming

>  * use bitmap ops instead of direct mem access + lock

memory

>  * sort headers and a few other cosmetic changes.
>
> changes v2->v3:
>  * fixed the yaml description of the bindings (now passes dt_binding_check)
>  * renamed shit-register-length into ti,shift-register-length and specify its
>    type
>
> changes v1->v2:
>  * renamed property shift_register_length into shift-register-length
>  * add a SPI MODULE_DEVICE_TABLE structure
>  * fixed the yaml description of the bindings (now passes dt_binding_check)
>
> Jean-Jacques Hiblot (3):
>   dt-bindings: leds: Add bindings for the TLC5925 controller
>   leds: Add driver for the TLC5925 LED controller
>   leds: tlc5925: Add support for non blocking operations
>
>  .../devicetree/bindings/leds/ti,tlc5925.yaml  | 107 ++++++++++
>  drivers/leds/Kconfig                          |   6 +
>  drivers/leds/Makefile                         |   1 +
>  drivers/leds/leds-tlc5925.c                   | 191 ++++++++++++++++++
>  4 files changed, 305 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/ti,tlc5925.yaml
>  create mode 100644 drivers/leds/leds-tlc5925.c
>
> --
> 2.25.1
>


-- 
With Best Regards,
Andy Shevchenko