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

zhengxing zhengxing at rock-chips.com
Wed May 13 19:22:18 PDT 2015

On 2015年05月14日 07:11, Dylan Reid wrote:
> On Wed, May 13, 2015 at 10:21 AM, Dylan Reid<dgreid at chromium.org>  wrote:
>> On Wed, May 13, 2015 at 9:42 AM, Mark Brown<broonie at kernel.org>  wrote:
>>> On Wed, May 13, 2015 at 09:23:01PM +0800, zhengxing wrote:
>>>> On 2015年05月13日 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.

Hi Mark, Dylan,
I tried to use simple-card and had some trouble that jack detection. So 
my idea is simply:
                                                   /-- rockchip_max98090 
(to configure max98090, and no need to via DTS)
    rockchip_machine_driver  |-- rockchip_rt5645 (to configure 
rt5650/rt5645, and no need to via DTS)
(supported codecs via DTS)   \-- rockchip_(maybe other codecs)

It is right that it is base on original rockchip_max98090, but the old 
rockchip_max98090 used DTS.

I tried to explain my ideas. Your kind suggestions will be highly 


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