From: Wolfram Sang <wsa@kernel.org>
To: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Cc: "Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Andreas Färber" <afaerber@suse.de>,
"Peter Rosin" <peda@axentia.se>,
linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-actions@lists.infradead.org
Subject: Re: [PATCH 2/3] i2c: owl: Add support for atomic transfers
Date: Tue, 3 Nov 2020 21:57:18 +0100 [thread overview]
Message-ID: <20201103205718.GC1583@kunai> (raw)
In-Reply-To: <1af37112fafd6cf069dfe864560f77996f57d80d.1602190168.git.cristian.ciocaltea@gmail.com>
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On Fri, Oct 09, 2020 at 12:44:40AM +0300, Cristian Ciocaltea wrote:
> Atomic transfers are required to properly power off a machine through
> an I2C controlled PMIC, such as the Actions Semi ATC260x series.
>
> System shutdown may happen with interrupts being disabled and, as a
> consequence, the kernel may hang if the driver does not support atomic
> transfers.
>
> This functionality is essentially implemented by polling the FIFO
> Status register until either Command Execute Completed or NACK Error
> bits are set.
>
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Applied to for-next, thanks!
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next prev parent reply other threads:[~2020-11-03 21:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 21:44 [PATCH 0/3] Improve Actions Semi Owl I2C driver Cristian Ciocaltea
2020-10-08 21:44 ` [PATCH 1/3] i2c: owl: Clear NACK and BUS error bits Cristian Ciocaltea
2020-10-10 11:16 ` Wolfram Sang
2020-10-11 14:09 ` Manivannan Sadhasivam
2020-10-12 9:05 ` Cristian Ciocaltea
2020-10-08 21:44 ` [PATCH 2/3] i2c: owl: Add support for atomic transfers Cristian Ciocaltea
2020-10-11 14:09 ` Manivannan Sadhasivam
2020-10-12 9:07 ` Cristian Ciocaltea
2020-11-03 20:57 ` Wolfram Sang [this message]
2020-10-08 21:44 ` [PATCH 3/3] i2c: owl: Enable asynchronous probing Cristian Ciocaltea
2020-10-11 14:06 ` Manivannan Sadhasivam
2020-10-12 9:08 ` Cristian Ciocaltea
2020-11-03 20:57 ` Wolfram Sang
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