From: Eric Woudstra <ericwouds@gmail.com>
To: "Lucien.Jheng" <lucienzx159@gmail.com>,
andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, bjorn@mork.no
Cc: frank-w@public-files.de, daniel@makrotopia.org, lucien.jheng@airoha.com
Subject: Re: [PATCH v2] net: phy: air_en8811h: add AN8811HB MCU assert/deassert support
Date: Sat, 28 Mar 2026 11:21:59 +0100 [thread overview]
Message-ID: <6f42d92b-a26d-49a4-bef7-2227c252eea7@gmail.com> (raw)
In-Reply-To: <edeee8e5-0de3-48ea-aeb5-cc705fdcd469@gmail.com>
On 3/27/26 5:41 AM, Eric Woudstra wrote:
> static int __air_pbus_reg_write(struct mdio_device *mdio, u32 pbus_address,
> u32 pbus_data)
> {
> int ret;
>
> ret = __mdiobus_write(mdio->bus, mdio->addr, AIR_EXT_PAGE_ACCESS,
> (u16)(pbus_address >> 6));
> if (ret < 0)
> return ret;
>
> ret = __mdiobus_write(mdio->bus, mdio->addr, (pbus_address >> 2) & 0xf,
> (u16)pbus_data);
> if (ret < 0)
> return ret;
>
> ret = __mdiobus_write(mdio->bus, mdio->addr, AIR_PBUS_DATA_HIGH,
> (u16)(pbus_data >> 16));
> if (ret < 0)
> return ret;
>
> return 0;
> }
>
> static int air_pbus_reg_write(struct mdio_device *mdio, u32 pbus_address,
> u32 pbus_data)
> {
> int ret;
>
> mutex_lock(&mdio->bus->mdio_lock);
>
> ret = __air_pbus_reg_write(mdio, pbus_address, pbus_data);
> if (ret < 0)
> dev_err(&mdio->dev, "%s 0x%08x failed: %d\n", __func__,
> pbus_address, ret);
>
> mutex_unlock(&mdio->bus->mdio_lock);
>
> return ret;
> }
>
> static int __air_pbus_reg_read(struct mdio_device *mdio, u32 pbus_address,
> u32 *pbus_data)
> {
> int ret, pbus_data_low;
>
> ret = __mdiobus_write(mdio->bus, mdio->addr, AIR_EXT_PAGE_ACCESS,
> (u16)(pbus_address >> 6));
> if (ret < 0)
> return ret;
>
> ret = __mdiobus_read(mdio->bus, mdio->addr, (pbus_address >> 2) & 0xf);
> if (ret < 0)
> return ret;
> pbus_data_low = ret;
>
> ret = __mdiobus_read(mdio->bus, mdio->addr, AIR_PBUS_DATA_HIGH);
> if (ret < 0)
> return ret;
>
> *pbus_data = (ret << 16) + pbus_data_low;
>
> return 0;
> }
>
> static int air_pbus_reg_read(struct mdio_device *mdio, u32 pbus_address,
> u32 *pbus_data)
> {
> int ret;
>
> mutex_lock(&mdio->bus->mdio_lock);
>
> ret = __air_pbus_reg_read(mdio, pbus_address, pbus_data);
> if (ret < 0)
> dev_err(&mdio->dev, "%s 0x%08x failed: %d\n", __func__,
> pbus_address, ret);
>
> mutex_unlock(&mdio->bus->mdio_lock);
>
> return ret;
> }
>
> With:
>
> #define AIR_PBUS_DATA_HIGH 0x10
Small correction using upper_16_bits() and lower_16_bits():
static int __air_pbus_reg_write(struct mdio_device *mdio, u32 pbus_address,
u32 pbus_data)
{
int ret;
ret = __mdiobus_write(mdio->bus, mdio->addr, AIR_EXT_PAGE_ACCESS,
(u16)(pbus_address >> 6));
if (ret < 0)
return ret;
ret = __mdiobus_write(mdio->bus, mdio->addr, (pbus_address >> 2) & 0xf,
lower_16_bits(pbus_data));
if (ret < 0)
return ret;
ret = __mdiobus_write(mdio->bus, mdio->addr, AIR_PBUS_DATA_HIGH,
upper_16_bits(pbus_data));
if (ret < 0)
return ret;
return 0;
}
static int air_pbus_reg_write(struct mdio_device *mdio, u32 pbus_address,
u32 pbus_data)
{
int ret;
mutex_lock(&mdio->bus->mdio_lock);
ret = __air_pbus_reg_write(mdio, pbus_address, pbus_data);
if (ret < 0)
dev_err(&mdio->dev, "%s 0x%08x failed: %d\n", __func__,
pbus_address, ret);
mutex_unlock(&mdio->bus->mdio_lock);
return ret;
}
next prev parent reply other threads:[~2026-03-28 15:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 15:35 [PATCH v2] net: phy: air_en8811h: add AN8811HB MCU assert/deassert support Lucien.Jheng
2026-03-26 20:00 ` Eric Woudstra
2026-03-29 4:59 ` Lucien.Jheng
2026-03-27 4:41 ` Eric Woudstra
2026-03-28 10:21 ` Eric Woudstra [this message]
2026-03-28 10:25 ` Russell King (Oracle)
2026-03-28 14:15 ` Andrew Lunn
2026-03-29 5:09 ` Lucien.Jheng
2026-03-29 5:05 ` Lucien.Jheng
2026-03-29 5:04 ` Lucien.Jheng
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