linux-kernel - Re: [PATCH v6 9/9] ACPI / scan: Create platform device for CS35L41

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Date:   Tue, 1 Feb 2022 16:03:14 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Stefan Binding <sbinding@...nsource.cirrus.com>,
        Mark Brown <broonie@...nel.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Mark Gross <markgross@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-acpi@...r.kernel.org,
        platform-driver-x86@...r.kernel.org, patches@...nsource.cirrus.com,
        Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: Re: [PATCH v6 9/9] ACPI / scan: Create platform device for CS35L41

Hi,

On 1/21/22 18:24, Stefan Binding wrote:
> From: Lucas Tanure <tanureal@...nsource.cirrus.com>
> 
> The ACPI device with CSC3551 or CLSA0100 are sound cards
> with multiple instances of CS35L41 connected by I2C or SPI
> to the main CPU.
> 
> We add an ID to the ignore_serial_bus_ids list to enumerate
> all I2C or SPI devices correctly.
> 
> The same IDs are also added into serial-multi-instantiate
> so that the driver can correctly enumerate the ACPI.
> 
> Signed-off-by: Lucas Tanure <tanureal@...nsource.cirrus.com>
> Signed-off-by: Stefan Binding <sbinding@...nsource.cirrus.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans


> ---
>  drivers/acpi/scan.c                             |  3 +++
>  drivers/platform/x86/serial-multi-instantiate.c | 14 ++++++++++++++
>  2 files changed, 17 insertions(+)
> 
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index 48db5e80c2dc..ebd10af3ff7f 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1744,8 +1744,11 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
>  	 */
>  		{"BSG1160", },
>  		{"BSG2150", },
> +		{"CSC3551", },
>  		{"INT33FE", },
>  		{"INT3515", },
> +	/* Non-conforming _HID for Cirrus Logic already released */
> +		{"CLSA0100", },
>  	/*
>  	 * HIDs of device with an UartSerialBusV2 resource for which userspace
>  	 * expects a regular tty cdev to be created (instead of the in kernel
> diff --git a/drivers/platform/x86/serial-multi-instantiate.c b/drivers/platform/x86/serial-multi-instantiate.c
> index 3f05385ca2cf..d09f11eac4f8 100644
> --- a/drivers/platform/x86/serial-multi-instantiate.c
> +++ b/drivers/platform/x86/serial-multi-instantiate.c
> @@ -308,6 +308,17 @@ static const struct smi_node int3515_data = {
>  	.bus_type = SMI_I2C,
>  };
>  
> +static const struct smi_node cs35l41_hda = {
> +	.instances = {
> +		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
> +		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
> +		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
> +		{ "cs35l41-hda", IRQ_RESOURCE_GPIO, 0 },
> +		{}
> +	},
> +	.bus_type = SMI_AUTO_DETECT,
> +};
> +
>  /*
>   * Note new device-ids must also be added to serial_multi_instantiate_ids in
>   * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
> @@ -316,6 +327,9 @@ static const struct acpi_device_id smi_acpi_ids[] = {
>  	{ "BSG1160", (unsigned long)&bsg1160_data },
>  	{ "BSG2150", (unsigned long)&bsg2150_data },
>  	{ "INT3515", (unsigned long)&int3515_data },
> +	{ "CSC3551", (unsigned long)&cs35l41_hda },
> +	/* Non-conforming _HID for Cirrus Logic already released */
> +	{ "CLSA0100", (unsigned long)&cs35l41_hda },
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(acpi, smi_acpi_ids);
>