From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: ChiaEn Wu <peterwu.pub@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 v5 12/13] leds: flashlight: mt6370: Add MediaTek MT6370 flashlight support
Date: Fri, 15 Jul 2022 20:13:49 +0200 [thread overview]
Message-ID: <CAHp75Vc7wNkhG2dL=0vVZq5paDQy_8+WJ25Jk4E8SG2TW6EZdw@mail.gmail.com> (raw)
In-Reply-To: <20220715112607.591-13-peterwu.pub@gmail.com>
On Fri, Jul 15, 2022 at 1:29 PM ChiaEn Wu <peterwu.pub@gmail.com> wrote:
> The MediaTek MT6370 is a highly-integrated smart power management IC,
> whichincludes a single cell Li-Ion/Li-Polymer switching battery
which includes
> charger, a USB Type-C & Power Delivery (PD) controller, dual Flash
> LED current sources, a RGB LED driver, a backlight WLED driver,
> a display bias driver and a general LDO for portable devices.
>
> The Flash LED in MT6370 has 2 channel and support torch/strobe mode.
channels
> The commit add the support of MT6370 FLASH LED.
Add the
...
> +#define MT6370_FLCSEN_MASK_ALL (BIT(0) | BIT(1))
GENMASK()
...
> + for (i = 0; i < MT6370_MAX_LEDS; i++) {
> + ret = regmap_update_bits(priv->regmap,
> + MT6370_REG_FLEDISTRB(i),
> + MT6370_ISTROBE_MASK, flevel[i]);
> + if (ret)
> + return ret;
> + }
> + } else {
> + ret = regmap_update_bits(priv->regmap,
> + MT6370_REG_FLEDISTRB(led->led_no),
> + MT6370_ISTROBE_MASK, val);
> + }
> + return ret;
return regmap_update_bits(...);
}
return 0;
...
> + /*
> + * If the flash need to be on,
needs
> + * config the flash current ramping up to the setting value.
> + * Else, always recover back to the minimum one.
> + */
...
> + /* For the flash turn on/off, need to wait HW ramping up/down time
to turn
> + * 5ms/500us to prevent the unexpected problem.
> + */
Wrong multi-line comment style.
> +
No need for a blank line.
> + if (!prev && curr)
> + usleep_range(5000, 6000);
> + else if (prev && !curr)
> + udelay(500);
...
> +static int mt6370_led_register(struct device *parent, struct mt6370_led *led,
> + struct led_init_data *init_data)
> +{
> + struct v4l2_flash_config v4l2_config = {0};
> + int ret;
> +
> + ret = devm_led_classdev_flash_register_ext(parent, &led->flash,
> + init_data);
> + if (ret) {
> + dev_err(parent, "Couldn't register flash %d\n", led->led_no);
> + return ret;
return dev_err_probe() here and everywhere where it is about probe stage.
> + }
> +
> + mt6370_init_v4l2_flash_config(led, &v4l2_config);
> + led->v4l2_flash = v4l2_flash_init(parent, init_data->fwnode,
> + &led->flash, &v4l2_flash_ops,
> + &v4l2_config);
> + if (IS_ERR(led->v4l2_flash)) {
> + dev_err(parent, "Failed to register %d v4l2 sd\n", led->led_no);
> + return PTR_ERR(led->v4l2_flash);
> + }
> +
> + return 0;
> +}
...
> + num = fwnode_property_count_u32(init_data->fwnode, "led-sources");
> + if (num < 1 || num > MT6370_MAX_LEDS) {
> + dev_err(priv->dev,
> + "Not specified or wrong number of led-sources\n");
> + return -EINVAL;
Ditto.
> + }
...
> + ret = fwnode_property_read_u32(init_data->fwnode, "led-max-microamp",
> + &val);
One line?
...
> + val = clamp_align(val, MT6370_STRBTO_MIN_US, MT6370_STRBTO_MAX_US,
> + MT6370_STRBTO_STEP_US);
I would name it mt6370_clamp() to avoid potential collision in the
global namespace in the future.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2022-07-15 18:14 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-15 11:25 [PATCH v5 00/13] Add MediaTek MT6370 PMIC support ChiaEn Wu
2022-07-15 11:25 ` [PATCH v5 01/13] dt-bindings: usb: Add MediaTek MT6370 TCPC ChiaEn Wu
2022-07-15 11:25 ` [PATCH v5 02/13] dt-bindings: power: supply: Add MediaTek MT6370 Charger ChiaEn Wu
2022-07-15 11:25 ` [PATCH v5 03/13] dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator ChiaEn Wu
2022-07-15 11:25 ` [PATCH v5 04/13] dt-bindings: leds: Add MediaTek MT6370 flashlight ChiaEn Wu
2022-07-15 11:25 ` [PATCH v5 05/13] dt-bindings: backlight: Add MediaTek MT6370 backlight ChiaEn Wu
2022-07-15 11:26 ` [PATCH v5 06/13] dt-bindings: mfd: Add MediaTek MT6370 ChiaEn Wu
2022-07-15 13:42 ` Rob Herring
2022-07-15 11:26 ` [PATCH v5 07/13] mfd: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-15 13:02 ` Andy Shevchenko
2022-07-15 11:26 ` [PATCH v5 08/13] usb: typec: tcpci_mt6370: Add MediaTek MT6370 tcpci driver ChiaEn Wu
2022-07-15 12:38 ` AngeloGioacchino Del Regno
2022-07-15 13:10 ` Andy Shevchenko
2022-07-18 8:08 ` ChiYuan Huang
2022-07-18 11:38 ` Andy Shevchenko
2022-07-18 13:56 ` ChiYuan Huang
2022-07-15 11:26 ` [PATCH v5 09/13] iio: adc: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-15 12:38 ` AngeloGioacchino Del Regno
2022-07-15 13:18 ` Andy Shevchenko
2022-07-15 11:26 ` [PATCH v5 10/13] power: supply: mt6370: Add MediaTek MT6370 charger driver ChiaEn Wu
2022-07-15 16:51 ` Andy Shevchenko
2022-07-16 21:37 ` Sebastian Reichel
2022-07-15 11:26 ` [PATCH v5 11/13] leds: mt6370: Add MediaTek MT6370 current sink type LED Indicator support ChiaEn Wu
2022-07-15 12:38 ` AngeloGioacchino Del Regno
2022-07-15 13:05 ` Andy Shevchenko
2022-07-15 18:29 ` Andy Shevchenko
2022-07-20 9:45 ` ChiYuan Huang
2022-07-20 9:48 ` ChiYuan Huang
2022-07-21 9:31 ` ChiYuan Huang
2022-07-17 8:46 ` Pavel Machek
2022-07-21 10:09 ` ChiYuan Huang
2022-07-15 11:26 ` [PATCH v5 12/13] leds: flashlight: mt6370: Add MediaTek MT6370 flashlight support ChiaEn Wu
2022-07-15 18:13 ` Andy Shevchenko [this message]
2022-07-15 11:26 ` [PATCH v5 13/13] video: backlight: mt6370: Add MediaTek MT6370 support ChiaEn Wu
2022-07-15 12:38 ` AngeloGioacchino Del Regno
2022-07-15 16:29 ` Daniel Thompson
2022-07-18 8:27 ` AngeloGioacchino Del Regno
2022-07-18 11:17 ` ChiaEn Wu
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