From: ChiaEn Wu <peterwu.pub@gmail.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>,
Daniel Thompson <daniel.thompson@linaro.org>,
Jingoo Han <jingoohan1@gmail.com>, Pavel Machek <pavel@ucw.cz>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Sebastian Reichel <sre@kernel.org>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
"Krogerus, Heikki" <heikki.krogerus@linux.intel.com>,
Helge Deller <deller@gmx.de>, ChiaEn Wu <chiaen_wu@richtek.com>,
Alice Chen <alice_chen@richtek.com>,
cy_huang <cy_huang@richtek.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
Linux LED Subsystem <linux-leds@vger.kernel.org>,
devicetree <devicetree@vger.kernel.org>,
linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux PM <linux-pm@vger.kernel.org>,
USB <linux-usb@vger.kernel.org>,
linux-iio <linux-iio@vger.kernel.org>,
"open list:FRAMEBUFFER LAYER" <linux-fbdev@vger.kernel.org>,
szuni chen <szunichen@gmail.com>
Subject: Re: [PATCH v6 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support
Date: Wed, 27 Jul 2022 15:36:59 +0800 [thread overview]
Message-ID: <CABtFH5+bQx5ym5jOzCPJWbZ23WtGYYwS7cMRt2g3ipEEqTb3JA@mail.gmail.com> (raw)
In-Reply-To: <CAHp75Vd4ApTju2LCCHQ1skgOjttwWo5b2NF3u+zbGyVnnFKNhA@mail.gmail.com>
On Tue, Jul 26, 2022 at 8:18 PM Andy Shevchenko
<andy.shevchenko@gmail.com> wrote:
...
> > Just for saving memory space.
> > Because these led_classdevs do not be used at the same time.
> > Or do you think it would be better to rewrite it as follows?
> > -------------------------------------------------------------------------------------
> > struct mt6370_led {
> > struct led_classdev isink;
> > struct led_classdev_mc mc;
> > struct mt6370_priv *priv;
> > u32 default_state;
> > u32 index;
> > };
> > -------------------------------------------------------------------------------------
>
> You obviously didn't get what I'm talking about...
> Each union to work properly should have an associated variable that
> holds the information of which field of the union is in use. Do you
> have such a variable? If not, how does your code know which one to
> use? If yes, add a proper comment there.
>
Ummm... from my understanding,
if the colors of these four LEDs are set to 'LED_COLOR_ID_RGB' or
'LED_COLOR_ID_MULTI' in DT,
their 'led->index' will be set to 'MT6370_VIRTUAL_MULTICOLOR' in
'mt6370_leds_probe()'.
If so, these led devices will be set as 'struct led_classdev_mc' and
use related ops functions in 'mt6370_init_led_properties()'.
Instead, they whose 'led->index' is not 'MT6370_VIRTUAL_MULTICOLOR'
will be set as 'struct led_classdev'.
So, maybe the member 'index' of the 'struct mt6370_led' is what you
describe the information of which field of the union is in use?
I will add the proper comment here to describe this thing. I'm so
sorry for misunderstanding your mean last time.
Thanks again for your review.
--
Best Regards,
ChiaEn Wu
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-07-27 7:38 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-22 10:23 [PATCH v6 00/13] Add MediaTek MT6370 PMIC support ChiaEn Wu
2022-07-22 10:23 ` [PATCH v6 01/13] dt-bindings: usb: Add MediaTek MT6370 TCPC ChiaEn Wu
2022-07-22 10:23 ` [PATCH v6 02/13] dt-bindings: power: supply: Add MediaTek MT6370 Charger ChiaEn Wu
2022-07-22 10:23 ` [PATCH v6 03/13] dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator ChiaEn Wu
2022-07-22 10:23 ` [PATCH v6 04/13] dt-bindings: leds: Add MediaTek MT6370 flashlight ChiaEn Wu
2022-07-30 21:30 ` Pavel Machek
2022-07-22 10:23 ` [PATCH v6 05/13] dt-bindings: backlight: Add MediaTek MT6370 backlight ChiaEn Wu
2022-08-01 6:47 ` ChiaEn Wu
2022-07-22 10:24 ` [PATCH v6 06/13] dt-bindings: mfd: Add MediaTek MT6370 ChiaEn Wu
2022-07-22 10:24 ` [PATCH v6 07/13] mfd: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-25 7:59 ` Andy Shevchenko
2022-07-25 8:29 ` ChiaEn Wu
2022-07-25 8:43 ` Andy Shevchenko
2022-07-25 9:06 ` ChiaEn Wu
2022-07-25 9:09 ` Andy Shevchenko
2022-07-22 10:24 ` [PATCH v6 08/13] usb: typec: tcpci_mt6370: Add MediaTek MT6370 tcpci driver ChiaEn Wu
2022-07-22 14:19 ` Guenter Roeck
2022-07-25 7:06 ` Chunfeng Yun
2022-07-25 7:17 ` ChiaEn Wu
2022-07-25 8:03 ` Andy Shevchenko
2022-07-22 10:24 ` [PATCH v6 09/13] iio: adc: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-25 8:10 ` Andy Shevchenko
2022-07-22 10:24 ` [PATCH v6 10/13] power: supply: mt6370: Add MediaTek MT6370 charger driver ChiaEn Wu
2022-07-25 8:25 ` Andy Shevchenko
2022-07-22 10:24 ` [PATCH v6 11/13] leds: rgb: mt6370: Add MediaTek MT6370 current sink type LED Indicator support ChiaEn Wu
2022-07-22 10:52 ` AngeloGioacchino Del Regno
2022-07-25 8:40 ` Andy Shevchenko
2022-07-26 11:45 ` ChiaEn Wu
2022-07-26 12:17 ` Andy Shevchenko
2022-07-27 7:36 ` ChiaEn Wu [this message]
2022-07-27 10:03 ` Andy Shevchenko
2022-07-30 21:39 ` Pavel Machek
2022-08-01 7:55 ` szuni chen
2022-07-22 10:24 ` [PATCH v6 12/13] leds: flash: mt6370: Add MediaTek MT6370 flashlight support ChiaEn Wu
2022-07-22 10:48 ` AngeloGioacchino Del Regno
2022-07-25 8:51 ` Andy Shevchenko
2022-07-29 6:17 ` szuni chen
2022-07-29 10:34 ` Andy Shevchenko
2022-07-25 8:55 ` Andy Shevchenko
2022-07-26 4:15 ` szuni chen
2022-07-26 6:10 ` Andy Shevchenko
2022-07-30 21:42 ` Pavel Machek
2022-08-04 9:53 ` Alice Chen
2022-07-22 10:24 ` [PATCH v6 13/13] video: backlight: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-25 9:07 ` Andy Shevchenko
2022-07-25 10:31 ` Daniel Thompson
2022-07-26 2:20 ` ChiaEn Wu
2022-07-26 9:30 ` Daniel Thompson
2022-07-26 11:28 ` ChiaEn Wu
2022-07-26 11:59 ` Daniel Thompson
2022-07-27 6:24 ` ChiaEn Wu
2022-07-28 11:31 ` Daniel Thompson
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