Linux-Hwmon Archive on lore.kernel.org
 help / color / Atom feed
From: Heiner Kallweit <hkallweit1@gmail.com>
To: Marek Vasut <marex@denx.de>, netdev@vger.kernel.org
Cc: Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Guenter Roeck <linux@roeck-us.net>,
	Jean Delvare <jdelvare@suse.com>,
	linux-hwmon@vger.kernel.org
Subject: Re: [PATCH V2] net: phy: tja11xx: Add IRQ support to the driver
Date: Tue, 28 May 2019 21:28:08 +0200
Message-ID: <96793717-a55c-7844-f7c0-cc357c774a19@gmail.com> (raw)
In-Reply-To: <20190528192324.28862-1-marex@denx.de>

On 28.05.2019 21:23, Marek Vasut wrote:
> Add support for handling the TJA11xx PHY IRQ signal.
> 
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: Florian Fainelli <f.fainelli@gmail.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: Heiner Kallweit <hkallweit1@gmail.com>
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: linux-hwmon@vger.kernel.org
> ---
> V2: - Define each bit of the MII_INTEN register and a mask
>     - Drop IRQ acking from tja11xx_config_intr()
> ---
>  drivers/net/phy/nxp-tja11xx.c | 48 +++++++++++++++++++++++++++++++++++
>  1 file changed, 48 insertions(+)
> 
> diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c
> index b705d0bd798b..b41af609607d 100644
> --- a/drivers/net/phy/nxp-tja11xx.c
> +++ b/drivers/net/phy/nxp-tja11xx.c
> @@ -40,6 +40,29 @@
>  #define MII_INTSRC_TEMP_ERR		BIT(1)
>  #define MII_INTSRC_UV_ERR		BIT(3)
>  
> +#define MII_INTEN			22
> +#define MII_INTEN_PWON_EN		BIT(15)
> +#define MII_INTEN_WAKEUP_EN		BIT(14)
> +#define MII_INTEN_PHY_INIT_FAIL_EN	BIT(11)
> +#define MII_INTEN_LINK_STATUS_FAIL_EN	BIT(10)
> +#define MII_INTEN_LINK_STATUS_UP_EN	BIT(9)
> +#define MII_INTEN_SYM_ERR_EN		BIT(8)
> +#define MII_INTEN_TRAINING_FAILED_EN	BIT(7)
> +#define MII_INTEN_SQI_WARNING_EN	BIT(6)
> +#define MII_INTEN_CONTROL_ERR_EN	BIT(5)
> +#define MII_INTEN_UV_ERR_EN		BIT(3)
> +#define MII_INTEN_UV_RECOVERY_EN	BIT(2)
> +#define MII_INTEN_TEMP_ERR_EN		BIT(1)
> +#define MII_INTEN_SLEEP_ABORT_EN	BIT(0)
> +#define MII_INTEN_MASK							\
> +	(MII_INTEN_PWON_EN | MII_INTEN_WAKEUP_EN |			\
> +	MII_INTEN_PHY_INIT_FAIL_EN | MII_INTEN_LINK_STATUS_FAIL_EN |	\
> +	MII_INTEN_LINK_STATUS_UP_EN | MII_INTEN_SYM_ERR_EN |		\
> +	MII_INTEN_TRAINING_FAILED_EN | MII_INTEN_SQI_WARNING_EN |	\
> +	MII_INTEN_CONTROL_ERR_EN | MII_INTEN_UV_ERR_EN |		\
> +	MII_INTEN_UV_RECOVERY_EN | MII_INTEN_TEMP_ERR_EN |		\
> +	MII_INTEN_SLEEP_ABORT_EN)

Why do you enable all these interrupt sources? As I said, phylib needs
link change info only.

> +
>  #define MII_COMMSTAT			23
>  #define MII_COMMSTAT_LINK_UP		BIT(15)
>  
> @@ -239,6 +262,25 @@ static int tja11xx_read_status(struct phy_device *phydev)
>  	return 0;
>  }
>  
> +static int tja11xx_config_intr(struct phy_device *phydev)
> +{
> +	int ret;
> +
> +	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
> +		ret = phy_write(phydev, MII_INTEN, MII_INTEN_MASK);
> +	else
> +		ret = phy_write(phydev, MII_INTEN, 0);
> +
> +	return ret < 0 ? ret : 0;

phy_write returns only 0 or negative errno. You don't need
variable ret.

> +}
> +
> +static int tja11xx_ack_interrupt(struct phy_device *phydev)
> +{
> +	int ret = phy_read(phydev, MII_INTSRC);
> +
> +	return ret < 0 ? ret : 0;
> +}
> +
>  static int tja11xx_get_sset_count(struct phy_device *phydev)
>  {
>  	return ARRAY_SIZE(tja11xx_hw_stats);
> @@ -366,6 +408,9 @@ static struct phy_driver tja11xx_driver[] = {
>  		.suspend	= genphy_suspend,
>  		.resume		= genphy_resume,
>  		.set_loopback   = genphy_loopback,
> +		/* IRQ related */
> +		.config_intr	= tja11xx_config_intr,
> +		.ack_interrupt	= tja11xx_ack_interrupt,
>  		/* Statistics */
>  		.get_sset_count = tja11xx_get_sset_count,
>  		.get_strings	= tja11xx_get_strings,
> @@ -381,6 +426,9 @@ static struct phy_driver tja11xx_driver[] = {
>  		.suspend	= genphy_suspend,
>  		.resume		= genphy_resume,
>  		.set_loopback   = genphy_loopback,
> +		/* IRQ related */
> +		.config_intr	= tja11xx_config_intr,
> +		.ack_interrupt	= tja11xx_ack_interrupt,
>  		/* Statistics */
>  		.get_sset_count = tja11xx_get_sset_count,
>  		.get_strings	= tja11xx_get_strings,
> 


  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-28 19:23 Marek Vasut
2019-05-28 19:28 ` Heiner Kallweit [this message]
2019-05-28 19:31   ` Marek Vasut
2019-05-28 19:35     ` Heiner Kallweit
2019-05-28 19:46       ` Marek Vasut
2019-05-28 19:58         ` Andrew Lunn
2019-05-28 20:00           ` Marek Vasut
2019-05-28 21:22             ` Andrew Lunn
2019-05-28 21:33               ` Marek Vasut
2019-05-29 23:29                 ` Andrew Lunn
2019-05-29 23:46                   ` Marek Vasut
2019-06-13 15:42                     ` Marek Vasut
2019-06-17 17:16                       ` Andrew Lunn
2019-06-17 17:43                         ` Marek Vasut

Reply instructions:

You may reply publically 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=96793717-a55c-7844-f7c0-cc357c774a19@gmail.com \
    --to=hkallweit1@gmail.com \
    --cc=andrew@lunn.ch \
    --cc=f.fainelli@gmail.com \
    --cc=jdelvare@suse.com \
    --cc=linux-hwmon@vger.kernel.org \
    --cc=linux@roeck-us.net \
    --cc=marex@denx.de \
    --cc=netdev@vger.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

Linux-Hwmon Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-hwmon/0 linux-hwmon/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-hwmon linux-hwmon/ https://lore.kernel.org/linux-hwmon \
		linux-hwmon@vger.kernel.org linux-hwmon@archiver.kernel.org
	public-inbox-index linux-hwmon


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-hwmon


AGPL code for this site: git clone https://public-inbox.org/ public-inbox