linux-kernel - Re: [PATCH v4 10/13] power: supply: mt6370: Add Mediatek MT6370 charger driver

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Message-ID: <CAHp75VfFWyvO44XjRCrx=caCLK0EX5gOfF6fnydZeegFBqJrzw@mail.gmail.com>
Date:   Mon, 4 Jul 2022 22:53:22 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     ChiaEn Wu <peterwu.pub@...il.com>
Cc:     Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@....cz>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sebastian Reichel <sre@...nel.org>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        "Krogerus, Heikki" <heikki.krogerus@...ux.intel.com>,
        Helge Deller <deller@....de>,
        ChiaEn Wu <chiaen_wu@...htek.com>,
        Alice Chen <alice_chen@...htek.com>,
        cy_huang <cy_huang@...htek.com>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        USB <linux-usb@...r.kernel.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        "open list:FRAMEBUFFER LAYER" <linux-fbdev@...r.kernel.org>,
        szuni chen <szunichen@...il.com>
Subject: Re: [PATCH v4 10/13] power: supply: mt6370: Add Mediatek MT6370
 charger driver

On Mon, Jul 4, 2022 at 7:42 AM ChiaEn Wu <peterwu.pub@...il.com> wrote:

> Add Mediatek MT6370 charger driver.

...

> +         This driver can also be built as a module. If so the module

If so,

> +         will be called "mt6370-charger.ko".

No ".ko" part.

...

> +#define MT6370_MIVR_IBUS_TH_100_MA     100000

mA

...

> +       if (mt6370_chg_fields[fd].range) {
> +               return linear_range_get_value(mt6370_chg_fields[fd].range,
> +                                             reg_val, val);

> +       } else {

Redundant 'else'.

> +               *val = reg_val;
> +               return 0;
> +       }

...

> +               if (fd != F_VMIVR)

Why not positive conditional?

> +                       linear_range_get_selector_within(r, val, &val);
> +               else {
> +                       ret = linear_range_get_selector_high(r, val, &val, &f);
> +                       if (!ret)
> +                               val = r->max_sel;
> +               }

Checkpatch didn't complain about the absence of {} ?

...

> +       irq_num = platform_get_irq_byname(pdev, irq_name);
> +       if (irq_num >= 0) {

  if (irq_num < 0)
    return;

> +               if (en)
> +                       enable_irq(irq_num);
> +               else
> +                       disable_irq_nosync(irq_num);
> +       }

...

> +       /* Check in otg mode or not */

OTG

...

> +static int mt6370_chg_set_online(struct mt6370_priv *priv,
> +                                const union power_supply_propval *val)
> +{
> +       unsigned int pwr_rdy = !!val->intval;

Seems you are using int as boolean, do you need it specifically for
something? Otherwise use boolean here.

> +
> +       mutex_lock(&priv->attach_lock);
> +       if (pwr_rdy == !!priv->attach) {
> +               dev_err(priv->dev, "pwr_rdy is same(%d)\n", pwr_rdy);
> +               mutex_unlock(&priv->attach_lock);
> +               return 0;
> +       }
> +
> +       priv->attach = pwr_rdy;
> +       mutex_unlock(&priv->attach_lock);
> +
> +       if (!queue_work(priv->wq, &priv->bc12_work))
> +               dev_err(priv->dev, "bc12 work has already queued\n");
> +
> +       return 0;
> +}

-- 
With Best Regards,
Andy Shevchenko