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From: Vinod Koul <vkoul@kernel.org>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
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: Sat, 14 Mar 2020 15:22:06 +0530	[thread overview]
Message-ID: <20200314095206.GR4885@vkoul-mobl> (raw)
In-Reply-To: <6d38a58a-a840-169a-1078-e10c278c11fd@linux.intel.com>

On 13-03-20, 12:07, Pierre-Louis Bossart wrote:
> 
> 
> 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

Ok pls drop from here.

> > > +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.

That would be better. We use 0 for success everywhere and -ve error
codes.

-- 
~Vinod

  reply	other threads:[~2020-03-15  2:25 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
2020-03-14  9:52       ` Vinod Koul [this message]
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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