Re: [alsa-devel] [PATCH v2 RESEND 1/2] mfd: arizona: Add support for OUTn_MONO register control

From: Lee Jones
Date: Tue Jan 20 2015 - 07:20:38 EST


DT Ack (for this and the doc) required.

> Some boards need to set the OUTn_MONO register to configurates
> the output signal path as a mono differential output. This
> wlf,out-mono property is optional. If present, values must be
> specified less than or equal to the number of output signals.
> If values less than the number of output signals, elements
> that has not been specified are set to 0 by default.
>
> Example:
> - wlf,out-mono = <1 0 1>; /* set OUT1,OUT3 to mono differential */
>
> Signed-off-by: Inha Song <ideal.song@xxxxxxxxxxx>
> ---
> drivers/mfd/arizona-core.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
> index bce7c07..cc2927d 100644
> --- a/drivers/mfd/arizona-core.c
> +++ b/drivers/mfd/arizona-core.c
> @@ -561,6 +561,16 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
> count++;
> }
>
> + count = 0;
> + of_property_for_each_u32(arizona->dev->of_node,
> + "wlf,out-mono", prop, cur, val) {
> + if (count >= ARRAY_SIZE(arizona->pdata.out_mono))
> + break;
> +
> + arizona->pdata.out_mono[count] = !!val;
> + count++;
> + }
> +
> return 0;
> }
>

--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org â Open source software for ARM SoCs
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