linux-kernel - Re: [RFC PATCH 35/40] soundwire: intel: export helper to exit reset

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Message-ID: <0d76e6ed-1ab3-6a9d-b33c-deb248d5cb9d@linux.intel.com>
Date:   Fri, 2 Aug 2019 12:44:51 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        tiwai@...e.de, broonie@...nel.org, gregkh@...uxfoundation.org,
        jank@...ence.com, srinivas.kandagatla@...aro.org,
        slawomir.blauciak@...el.com, Sanyog Kale <sanyog.r.kale@...el.com>
Subject: Re: [RFC PATCH 35/40] soundwire: intel: export helper to exit reset

On 8/2/19 12:31 PM, Vinod Koul wrote:
> On 25-07-19, 18:40, Pierre-Louis Bossart wrote:
> 
> Here as well

I squashed this with earlier patches to fix the init sequence in one shot

> 
>> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
>> ---
>>   drivers/soundwire/cadence_master.c | 9 +++++++--
>>   drivers/soundwire/cadence_master.h | 1 +
>>   drivers/soundwire/intel.c          | 4 ++++
>>   3 files changed, 12 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
>> index 4a189e487830..f486fe15fb46 100644
>> --- a/drivers/soundwire/cadence_master.c
>> +++ b/drivers/soundwire/cadence_master.c
>> @@ -780,7 +780,11 @@ EXPORT_SYMBOL(sdw_cdns_thread);
>>    * init routines
>>    */
>>   
>> -static int do_reset(struct sdw_cdns *cdns)
>> +/**
>> + * sdw_cdns_exit_reset() - Program reset parameters and start bus operations
>> + * @cdns: Cadence instance
>> + */
>> +int sdw_cdns_exit_reset(struct sdw_cdns *cdns)
>>   {
>>   	int ret;
>>   
>> @@ -804,6 +808,7 @@ static int do_reset(struct sdw_cdns *cdns)
>>   
>>   	return ret;
>>   }
>> +EXPORT_SYMBOL(sdw_cdns_exit_reset);
>>   
>>   /**
>>    * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config
>> @@ -839,7 +844,7 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns)
>>   
>>   	cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
>>   
>> -	return do_reset(cdns);
>> +	return 0;
>>   }
>>   EXPORT_SYMBOL(sdw_cdns_enable_interrupt);
>>   
>> diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h
>> index de97bc22acb7..2b551f9226f3 100644
>> --- a/drivers/soundwire/cadence_master.h
>> +++ b/drivers/soundwire/cadence_master.h
>> @@ -161,6 +161,7 @@ irqreturn_t sdw_cdns_thread(int irq, void *dev_id);
>>   int sdw_cdns_init(struct sdw_cdns *cdns);
>>   int sdw_cdns_pdi_init(struct sdw_cdns *cdns,
>>   		      struct sdw_cdns_stream_config config);
>> +int sdw_cdns_exit_reset(struct sdw_cdns *cdns);
>>   int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns);
>>   
>>   void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root);
>> diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
>> index a976480d6f36..9ebe38e4d979 100644
>> --- a/drivers/soundwire/intel.c
>> +++ b/drivers/soundwire/intel.c
>> @@ -1112,6 +1112,8 @@ static int intel_probe(struct platform_device *pdev)
>>   
>>   	ret = sdw_cdns_enable_interrupt(&sdw->cdns);
>>   
>> +	ret = sdw_cdns_exit_reset(&sdw->cdns);
>> +
>>   	/* Register DAIs */
>>   	ret = intel_register_dai(sdw);
>>   	if (ret) {
>> @@ -1199,6 +1201,8 @@ static int intel_resume(struct device *dev)
>>   
>>   	sdw_cdns_enable_interrupt(&sdw->cdns);
>>   
>> +	ret = sdw_cdns_exit_reset(&sdw->cdns);
>> +
>>   	return ret;
>>   }
>>   
>> -- 
>> 2.20.1
>