linux-kernel - Re: [PATCH v4 3/5] mfd: arizona: Add support for ACPI enumeration of WM5102 connected over SPI

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Date:   Thu, 4 Feb 2021 13:55:49 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, patches@...nsource.cirrus.com,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Charles Keepax <ckeepax@...nsource.cirrus.com>,
        alsa-devel@...a-project.org,
        Christian Hartmann <cornogle@...glemail.com>
Subject: Re: [PATCH v4 3/5] mfd: arizona: Add support for ACPI enumeration of
 WM5102 connected over SPI

On Wed, 20 Jan 2021, Hans de Goede wrote:

> The Intel Bay Trail (x86/ACPI) based Lenovo Yoga Tablet 2 series use
> a WM5102 codec connected over SPI.
> 
> Add support for ACPI enumeration to arizona-spi so that arizona-spi can
> bind to the codec on these tablets.
> 
> This is loosely based on an earlier attempt (for Android-x86) at this by
> Christian Hartmann, combined with insights in things like the speaker GPIO
> from the android-x86 android port for the Lenovo Yoga Tablet 2 1051F/L [1].
> 
> [1] https://github.com/Kitsune2222/Android_Yoga_Tablet_2-1051F_Kernel
> 
> Cc: Christian Hartmann <cornogle@...glemail.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> ---
> Changes in v4:
> - Add a comment to the irq-flags override explaining that theoretically
>   DSDTs using IRQF_TRIGGER_FALLING could be correct on boards where the
>   IRQ controller does not support active low level interrupts
> 
> Changes in v3:
> - Fix compilation error when CONFIG_ACPI is not set
> 
> Changes in v2:
> - Minor coding style tweaks
> - Use memcpy instead of for loop to copy gpiod_lookup-s
> - Log a warning when the ACPI "CLKE" call fails
> - Drop addition of acpi_device_get_match_data() call, as the code was
>   moved over to use the generic device_get_match_data() helper in a
>   (new in v2) preparation patch
> ---
>  drivers/mfd/arizona-spi.c | 127 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 127 insertions(+)

Applied, thanks.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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