[PATCH] ASoC: amd: add logic to check dmic hardware runtime

[Jaroslav Kysela]

Dne 20. 06. 20 v 14:04 Vijendar Mukunda napsal(a):
> Add logic to check DMIC hardware exists or not on
> the platform at runtime.
> 
> Add module param for overriding DMIC hardware check
> at runtime.
> 
> Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
> ---
>   sound/soc/amd/renoir/rn-pci-acp3x.c | 29 +++++++++++++++++++++++++++++
>   sound/soc/amd/renoir/rn_acp3x.h     |  7 +++++++
>   2 files changed, 36 insertions(+)
> 
> diff --git a/sound/soc/amd/renoir/rn-pci-acp3x.c b/sound/soc/amd/renoir/rn-pci-acp3x.c
> index 859ed67..ef6eeba 100644
> --- a/sound/soc/amd/renoir/rn-pci-acp3x.c
> +++ b/sound/soc/amd/renoir/rn-pci-acp3x.c
> @@ -5,6 +5,7 @@
>   //Copyright 2020 Advanced Micro Devices, Inc.
>   
>   #include <linux/pci.h>
> +#include <linux/acpi.h>
>   #include <linux/module.h>
>   #include <linux/io.h>
>   #include <linux/delay.h>
> @@ -18,6 +19,16 @@ static int acp_power_gating;
>   module_param(acp_power_gating, int, 0644);
>   MODULE_PARM_DESC(acp_power_gating, "Enable acp power gating");
>   
> +/**
> + * dmic_acpi_check = 0 - Skips DMIC device creation and returns probe failure
> + *                 = 1 - Assumes that platform has DMIC support and skips ACPI
> + *                       method check
> + *                 = 2 - Checks ACPI method to know DMIC hardware status runtime
> + */
> +static int dmic_acpi_check = ACP_DMIC_AUTO;

I would prefer to have 0 = auto, 1 = force, 2 = skip to put the 
dmic_acpi_check variable to BSS. Otherwise the patch looks good. Thanks.

					Jaroslav
-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.