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Date: Tue, 22 Mar 2022 07:20:31 +0000 From: Lee Jones <lee.jones@...aro.org> To: Hans de Goede <hdegoede@...hat.com> Cc: patches@...nsource.cirrus.com, linux-kernel@...r.kernel.org, Charles Keepax <ckeepax@...nsource.cirrus.com> Subject: Re: [PATCH v2 2/2] mfd: arizona-spi: Add Android board ACPI table handling On Mon, 07 Mar 2022, Hans de Goede wrote: > x86/ACPI boards with an arizona WM5102 codec ship with either Windows or > Android as factory installed OS. > > The ACPI fwnode for the codec on Android boards misses 2 things compared > to the Windows boards (this is hardcoded in the Android board kernels): > > 1. There is no CLKE ACPI method to enabe the 32 KHz clock the codec needs > for jack-detection. > > 2. The GPIOs used by the codec are not listed in the fwnode for the codec. > > The ACPI tables on x86/ACPI boards shipped with Android being incomplete > happens a lot. The special drivers/platform/x86/x86-android-tablets.c > module contains DMI based per model handling to compensate for this. > > This module will enable the 32KHz clock through the pinctrl framework > to fix 1. and it will also register a gpio-lookup table for all GPIOs > needed by the codec + machine driver, including the GPIOs coming from > the codec itself. > > Add an arizona_spi_acpi_android_probe() function which waits for the > x86-android-tablets to have set things up before continue with probing > the arizona WM5102 codec. > > Acked-by: Charles Keepax <ckeepax@...nsource.cirrus.com> > Signed-off-by: Hans de Goede <hdegoede@...hat.com> > --- > Changes in v2: > - Wrap long dev_info_once() line > --- > drivers/mfd/arizona-spi.c | 35 ++++++++++++++++++++++++++++++++++- > 1 file changed, 34 insertions(+), 1 deletion(-) Applied, thanks. -- Lee Jones [李琼斯] Principal Technical Lead - Developer Services Linaro.org │ Open source software for Arm SoCs Follow Linaro: Facebook | Twitter | Blog
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