linux-kernel - RE: [PATCH v2 1/2] ALSA: cs35l41: obey the trigger type from DSDT

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Date: Thu, 18 Apr 2024 11:58:12 +0100
From: Stefan Binding <sbinding@...nsource.cirrus.com>
To: 'ArcticLampyrid' <ArcticLampyrid@...look.com>, <james.schulman@...rus.com>,
        <david.rhodes@...rus.com>, <rf@...nsource.cirrus.com>
CC: <patches@...nsource.cirrus.com>, <linux-sound@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 1/2] ALSA: cs35l41: obey the trigger type from DSDT

Hi,

Looking at the ACPI attached previously, this issue needs some more
investigation.
I don't think this patch is a good idea, since it is unknown what
effects this patch will have on other laptops.

Thanks,
Stefan

> -----Original Message-----
> From: ArcticLampyrid <ArcticLampyrid@...look.com>
> Sent: Thursday, April 18, 2024 7:46 AM
> To: james.schulman@...rus.com; david.rhodes@...rus.com;
> rf@...nsource.cirrus.com
> Cc: patches@...nsource.cirrus.com; linux-sound@...r.kernel.org;
linux-
> kernel@...r.kernel.org; ArcticLampyrid <ArcticLampyrid@...look.com>
> Subject: [PATCH v2 1/2] ALSA: cs35l41: obey the trigger type from
DSDT
> 
> On some models, CSC3551's interrupt pin connected to
> APIC. We need to obey the trigger type from DSDT in this case.
> 
> Signed-off-by: ArcticLampyrid <ArcticLampyrid@...look.com>
> ---
>  sound/pci/hda/cs35l41_hda.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/sound/pci/hda/cs35l41_hda.c
b/sound/pci/hda/cs35l41_hda.c
> index d3fa6e136744..d9c7b4034684 100644
> --- a/sound/pci/hda/cs35l41_hda.c
> +++ b/sound/pci/hda/cs35l41_hda.c
> @@ -10,6 +10,7 @@
>  #include <linux/module.h>
>  #include <linux/moduleparam.h>
>  #include <sound/hda_codec.h>
> +#include <linux/irq.h>
>  #include <sound/soc.h>
>  #include <linux/pm_runtime.h>
>  #include <linux/spi/spi.h>
> @@ -1511,6 +1512,14 @@ static int
cs35l41_hda_apply_properties(struct
> cs35l41_hda *cs35l41)
>  	irq_pol = cs35l41_gpio_config(cs35l41->regmap, hw_cfg);
> 
>  	if (cs35l41->irq && using_irq) {
> +		struct irq_data *irq_data;
> +
> +		irq_data = irq_get_irq_data(cs35l41->irq);
> +		if (irq_data && irqd_trigger_type_was_set(irq_data)) {
> +			irq_pol = irqd_get_trigger_type(irq_data);
> +			dev_info(cs35l41->dev, "Using configured IRQ
> Polarity: %d\n", irq_pol);
> +		}
> +
>  		ret = devm_regmap_add_irq_chip(cs35l41->dev, cs35l41-
> >regmap, cs35l41->irq,
>  					       IRQF_ONESHOT |
> IRQF_SHARED | irq_pol,
>  					       0,
> &cs35l41_regmap_irq_chip, &cs35l41->irq_data);
> --
> 2.44.0
>