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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Vinod Koul <vkoul@kernel.org>
Cc: alsa-devel@alsa-project.org, tiwai@suse.de,
	gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	Hui Wang <hui.wang@canonical.com>,
	broonie@kernel.org, srinivas.kandagatla@linaro.org,
	jank@cadence.com, slawomir.blauciak@intel.com,
	Sanyog Kale <sanyog.r.kale@intel.com>,
	Rander Wang <rander.wang@intel.com>,
	Bard liao <yung-chuan.liao@linux.intel.com>,
	Rander Wang <rander.wang@linux.intel.com>
Subject: Re: [PATCH 05/16] soundwire: cadence: add clock_stop/restart routines
Date: Fri, 13 Mar 2020 12:07:59 -0500	[thread overview]
Message-ID: <6d38a58a-a840-169a-1078-e10c278c11fd@linux.intel.com> (raw)
In-Reply-To: <20200313122156.GG4885@vkoul-mobl>



On 3/13/20 7:21 AM, Vinod Koul wrote:
> On 11-03-20, 13:41, Pierre-Louis Bossart wrote:
> 
>> @@ -225,12 +225,30 @@ static int cdns_clear_bit(struct sdw_cdns *cdns, int offset, u32 value)
>>   			return 0;
>>   
>>   		timeout--;
>> -		udelay(50);
>> +		usleep_range(50, 100);
> 
> this seems okay change, but unrelated to this patch

ok. It doesn't really matter anyway, this function is removed in Patch 8

>> +int sdw_cdns_clock_stop(struct sdw_cdns *cdns, bool block_wake)
>> +{
>> +	bool slave_present = false;
>> +	struct sdw_slave *slave;
>> +	u32 status;
>> +	int ret;
>> +
>> +	/* Check suspend status */
>> +	status = cdns_readl(cdns, CDNS_MCP_STAT);
>> +	if (status & CDNS_MCP_STAT_CLK_STOP) {
>> +		dev_dbg(cdns->dev, "Clock is already stopped\n");
>> +		return 1;
> 
> return of 1..? Does that indicate success/fail..?

success. I guess it could be moved as 0.

		ret = sdw_cdns_clock_stop(cdns, true);
		if (ret < 0) {
			dev_err(dev, "cannot enable clock stop on suspend\n");
			return ret;
		}


  reply	other threads:[~2020-03-13 17:29 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 18:41 [PATCH 00/16] SoundWire: cadence: add clock stop and fix programming sequences Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 01/16] soundwire: cadence: s/update_config/config_update Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 02/16] soundwire: cadence: simplifiy cdns_init() Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 03/16] soundwire: cadence: add interface to check clock status Pierre-Louis Bossart
2020-03-13 12:06   ` Vinod Koul
2020-03-13 16:31     ` Pierre-Louis Bossart
2020-03-14  9:50       ` Vinod Koul
2020-03-11 18:41 ` [PATCH 04/16] soundwire: cadence: handle error cases with CONFIG_UPDATE Pierre-Louis Bossart
2020-03-13 12:08   ` Vinod Koul
2020-03-13 17:09     ` Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 05/16] soundwire: cadence: add clock_stop/restart routines Pierre-Louis Bossart
2020-03-13 12:21   ` Vinod Koul
2020-03-13 17:07     ` Pierre-Louis Bossart [this message]
2020-03-14  9:52       ` Vinod Koul
2020-03-11 18:41 ` [PATCH 06/16] soundwire: cadence: fix a io timeout issue in S3 test Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 07/16] soundwire: cadence: mask Slave interrupt before stopping clock Pierre-Louis Bossart
2020-03-13 12:24   ` Vinod Koul
2020-03-13 16:33     ` Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 08/16] soundwire: cadence: merge routines to clear/set bits Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 09/16] soundwire: cadence: move clock/SSP related inits to dedicated function Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 10/16] soundwire: cadence: make SSP interval programmable Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 11/16] soundwire: cadence: reorder MCP_CONFIG settings Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 12/16] soundwire: cadence: enable NORMAL operation in cdns_init() Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 13/16] soundwire: cadence: remove PREQ_DELAY assignment Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 14/16] soundwire: cadence: remove automatic command retries Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 15/16] soundwire: cadence: commit changes in the exit_reset() sequence Pierre-Louis Bossart
2020-03-11 18:41 ` [PATCH 16/16] soundwire: cadence: multi-link support Pierre-Louis Bossart

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