Re: [PATCH 1/4] ASoC: rockchip: add rockchip machine driver

From: Dylan Reid
Date: Wed May 13 2015 - 13:22:00 EST

On Wed, May 13, 2015 at 9:42 AM, Mark Brown <broonie@xxxxxxxxxx> wrote:
> On Wed, May 13, 2015 at 09:23:01PM +0800, zhengxing wrote:
>> On 2015å05æ13æ 03:22, Mark Brown wrote:
>> >Is it not possible to extend simple card to handle your use cases?
>> >Given the very generic naming and the fact that things like jack
>> >detection and so on should depend on the CODEC and board usually rather
>> >than on the SoC it doesn't sound like this is Rockchip specific.
>> >This also looks like you're reimplementing some device model enumeration
>> >stuff which probably shouldn't be happening but let's understand the
>> >problem you're trying to solve here before going too far into the code.
>> Because we are trying to bring rt5650 in the project, so we intend to
>> describe supported codecs with DTS via only a rockchip machine driver file,
>> others remain pre-implement(like max98090 / rt5645 that vendor machine
>> driver).
> I don't undertand what you're saying here, sorry - why is this not just
> a case of writing multiple machine drivers?

I don't understand this either. I'd think the best solution is
simple-card, configured through DTS for each device.

>> I communicated with Dylan, and he told me that the jack detection is an
>> issue in the simple-card, and suggested we are better to send them at
>> present.
> But what are these issues?

The issue I was referring to when I spoke with rock chip was the need
to pass the jack simple-card creates to the headset chip or codec. We
need a way to specify a device like a tsa227e or rt5650 to pass the
jack to, which events are supported by the jack, and a generic API for
passing the jack.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at