netdev - Re: [PATCH net-next 3/9] net: phy: mediatek: Move LED helper functions into mtk phy lib

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Message-ID: <3f1c73ec57aefa2803df0c32c78dcdc41fed4126.camel@mediatek.com>
Date: Mon, 7 Oct 2024 04:30:08 +0000
From: SkyLake Huang (黃啟澤)
	<SkyLake.Huang@...iatek.com>
To: "andrew@...n.ch" <andrew@...n.ch>
CC: "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
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	"daniel@...rotopia.org" <daniel@...rotopia.org>, AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH net-next 3/9] net: phy: mediatek: Move LED helper
 functions into mtk phy lib

On Sun, 2024-10-06 at 23:28 +0200, Andrew Lunn wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  >  static int mt798x_phy_led_blink_set(struct phy_device *phydev, u8
> index,
> >      unsigned long *delay_on,
> >      unsigned long *delay_off)
> >  {
> > +struct mtk_socphy_priv *priv = phydev->priv;
> >  bool blinking = false;
> >  int err = 0;
> >  
> > -if (index > 1)
> > -return -EINVAL;
> > -
> > -if (delay_on && delay_off && (*delay_on > 0) && (*delay_off > 0))
> {
> > -blinking = true;
> > -*delay_on = 50;
> > -*delay_off = 50;
> > -}
> > +err = mtk_phy_led_num_dly_cfg(index, delay_on, delay_off,
> &blinking);
> > +if (err < 0)
> > +return err;
> >  
> > -err = mt798x_phy_hw_led_blink_set(phydev, index, blinking);
> > +err = mtk_phy_hw_led_blink_set(phydev, index, &priv->led_state,
> > +       blinking);
> >  if (err)
> >  return err;
> >  
> > -return mt798x_phy_hw_led_on_set(phydev, index, false);
> > +return mtk_phy_hw_led_on_set(phydev, index, &priv->led_state,
> > +     MTK_GPHY_LED_ON_MASK, false);
> >  }
> >  
> >  static int mt798x_phy_led_brightness_set(struct phy_device
> *phydev,
> >   u8 index, enum led_brightness value)
> >  {
> > +struct mtk_socphy_priv *priv = phydev->priv;
> >  int err;
> >  
> > -err = mt798x_phy_hw_led_blink_set(phydev, index, false);
> > +err = mtk_phy_hw_led_blink_set(phydev, index, &priv->led_state,
> false);
> >  if (err)
> >  return err;
> 
> If this is just moving code into a shared helper library, why is priv
> now needed, when it was not before?
> 
> Maybe this needs splitting into two patches, to help explain this
> change.
> 
> Andrew

Although this is just "moving code", we need this priv to do some
modification for mt798x_phy_hw_led_blink_set() so that we can move it
to mtk-phy-lib properly.
I was trying to split this patch into two but I'm afraid that will make
this patchset more complex. Is it okay that I add more explanation in
commit message? like:

This patch creates mtk-phy-lib.c & mtk-phy.h and integrates mtk-ge-
soc.c's LED helper functions so that we can use those helper functions
in other MTK's ethernet phy driver.
We need private data passed to
- mtk_phy_hw_led_on_set()
- mtk_phy_hw_led_blink_set()
- mtk_phy_led_hw_ctrl_get()
- mtk_phy_led_hw_ctrl_set()
to make sure these helper functions can be used in both mtk-ge-soc.c &
mtk-ge.c.

BRs,
Sky