From: Pavel Machek <pavel@ucw.cz>
To: Hermes Zhang <chenhui.zhang@axis.com>
Cc: dmurphy@ti.com, robh+dt@kernel.org, linux-leds@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
chenhuiz@axis.com, lkml@axis.com, kernel@axis.com
Subject: Re: [PATCH v2 2/2] leds: leds-multi-gpio: Add multiple GPIOs LED driver
Date: Fri, 26 Mar 2021 14:49:39 +0100 [thread overview]
Message-ID: <20210326134939.GA11578@duo.ucw.cz> (raw)
In-Reply-To: <20210326052801.17666-3-chenhui.zhang@axis.com>
[-- Attachment #1: Type: text/plain, Size: 1191 bytes --]
Hi!
> Introduce a new multiple GPIOs LED driver. This LED will made of
> multiple GPIOs (up to 8) and will map different brightness to different
> GPIOs states which defined in dts file.
>
> Signed-off-by: Hermes Zhang <chenhuiz@axis.com>
> index 000000000000..7aef82701f86
> --- /dev/null
> +++ b/drivers/leds/simple/Kconfig
> @@ -0,0 +1,23 @@
> +menuconfig LEDS_SIMPLE
> + bool "Simple LED support"
> + depends on LEDS_CLASS
> + help
> + This option enables simple leds support for the leds class.
> + If unsure, say Y.
No need for new config symbol.
> + if (ret != 1 << gpios->ndescs) {
I'd do (ret != (1 << gpios->ndescs))
> + priv = devm_kzalloc(dev, sizeof(struct multi_gpio_led_priv)
> + + sizeof(u8) * nr_states , GFP_KERNEL);
Sizeof(u8) is always 1, no need for space before , .
> + of_property_read_string(node, "default-state", &state);
> + if (!strcmp(state, "on"))
> + multi_gpio_led_set(&priv->cdev, priv->cdev.max_brightness);
> + else
> + multi_gpio_led_set(&priv->cdev, 0);
No need for default-state handling, unless you are using it.
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]
next prev parent reply other threads:[~2021-03-26 13:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-26 5:27 [PATCH v2 0/2] New multiple GPIOs LED driver Hermes Zhang
2021-03-26 5:28 ` [PATCH v2 1/2] dt-binding: leds: Document leds-multi-gpio bindings Hermes Zhang
2021-03-27 18:12 ` Rob Herring
2021-03-29 6:03 ` Hermes Zhang
2021-03-26 5:28 ` [PATCH v2 2/2] leds: leds-multi-gpio: Add multiple GPIOs LED driver Hermes Zhang
2021-03-26 5:56 ` Alexander Dahl
2021-03-26 6:07 ` Hermes Zhang
2021-03-26 13:49 ` Pavel Machek [this message]
2021-03-29 6:00 ` Hermes Zhang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210326134939.GA11578@duo.ucw.cz \
--to=pavel@ucw.cz \
--cc=chenhui.zhang@axis.com \
--cc=chenhuiz@axis.com \
--cc=devicetree@vger.kernel.org \
--cc=dmurphy@ti.com \
--cc=kernel@axis.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-leds@vger.kernel.org \
--cc=lkml@axis.com \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).