linux-kernel - Re: [PATCH v2 5/5] ASoC: qdsp6: q6asm-dai: Add support to compress offload

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Date:   Fri, 5 Oct 2018 09:15:30 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Vinod <vkoul@...nel.org>
Cc:     broonie@...nel.org, alsa-devel@...a-project.org,
        robh+dt@...nel.org, linux-kernel@...r.kernel.org,
        bgoswami@...eaurora.org, rohitkr@...eaurora.org,
        lgirdwood@...il.com, tiwai@...e.com, devicetree@...r.kernel.org,
        mark.rutland@....com
Subject: Re: [PATCH v2 5/5] ASoC: qdsp6: q6asm-dai: Add support to compress
 offload

Thanks Vinod for the Review!

On 05/10/18 01:39, Vinod wrote:
> On 26-09-18, 11:23, Srinivas Kandagatla wrote:
>> This patch adds MP3 playback support in q6asm dais, adding other codec
>> support should be pretty trivial.
>>
>> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>> ---
>>   sound/soc/qcom/Kconfig           |   1 +
>>   sound/soc/qcom/qdsp6/q6asm-dai.c | 377 ++++++++++++++++++++++++++++++-
>>   2 files changed, 377 insertions(+), 1 deletion(-)
>>
...
>> +#define Q6ASM_DAI_RX	2
>> +
>> +
> 
> Unnecessary double space
> 

I did notice this just after I sent the patch!
>>   enum stream_state {
>>   	Q6ASM_STREAM_IDLE = 0,
>>   	Q6ASM_STREAM_STOPPED,
>> @@ -39,11 +51,22 @@ enum stream_state {
>>   
>>   struct q6asm_dai_rtd {
>>   	struct snd_pcm_substream *substream;
>> +	struct snd_compr_stream *cstream;
>> +	struct snd_compr_params codec_param;
>> +	struct snd_dma_buffer dma_buffer;
>> +
>>   	phys_addr_t phys;
>> +	spinlock_t lock;
> 
> why would we need a lock for compress case?
bytes_received counter is updated as part of Ack and referenced in the 
irq context in the event_handler callback from dsp, this lock is to 
protect it !

--srini
>