linux-kernel - Re: [PATCH 14/15] ARM: pxa: change SSP devices allocation

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Date:   Sun, 08 Apr 2018 14:16:17 +0200
From:   Robert Jarzmik <robert.jarzmik@...e.fr>
To:     Arnd Bergmann <arnd@...db.de>, Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        alsa-devel@...a-project.org
Subject: Re: [PATCH 14/15] ARM: pxa: change SSP devices allocation

Arnd Bergmann <arnd@...db.de> writes:

> I don't know exactly how the probing works, but I'd assume that we have
> the correct device pointers in pxa2xx_ac97_dev_probe() and
> asoc_ssp_probe(), or maybe in pxa2xx_ac97_*_startup() and
> pxa_ssp_startup().

Yes, let's try this way, in the former patch

"ASoC: pxa: remove the dmaengine compat need" :
+++ b/sound/arm/pxa2xx-pcm-lib.c
@@ -126,7 +127,7 @@ int __pxa2xx_pcm_open(struct snd_pcm_substream *substream)
                return ret;
 
        return snd_dmaengine_pcm_open(
-               substream, dma_request_slave_channel(rtd->platform->dev,
+               substream, dma_request_slave_channel(rtd->cpu_dai->dev,
                                                     dma_params->chan_name));
 }

The cpu_dai device should be either pxa27x_ac97 or pxa-ssp-dai.<Id>, and amend
the dma slave map accordingly.

Cheers.

-- 
Robert