linux-kernel - Re: [PATCH] ASoC: adau1761: Ensure DSP_RUN and DSP

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Message-ID: <201811292031.IM0kTW5l%fengguang.wu@intel.com>
Date:   Thu, 29 Nov 2018 20:51:29 +0800
From:   kbuild test robot <lkp@...el.com>
To:     niklas.morberg@...s.com, Carlsson@...s.com
Cc:     kbuild-all@...org, niklasc@...s.com,
        Lars-Peter Clausen <lars@...afoo.de>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: adau1761: Ensure DSP_RUN and DSP_ENABLE are
 disabled

Hi Niklas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on asoc/for-next]
[also build test WARNING on v4.20-rc4 next-20181129]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/niklas-morberg-axis-com/ASoC-adau1761-Ensure-DSP_RUN-and-DSP_ENABLE-are-disabled/20181129-183313
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
config: i386-randconfig-x002-201847 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/linux/kernel.h:10:0,
                    from include/linux/list.h:9,
                    from include/linux/module.h:9,
                    from sound/soc/codecs/adau1761.c:10:
   sound/soc/codecs/adau1761.c: In function 'adau1761_set_bias_level':
   sound/soc/codecs/adau1761.c:484:8: error: implicit declaration of function 'adau17x1_has_dsp'; did you mean 'adau17x1_resume'? [-Werror=implicit-function-declaration]
       if (adau17x1_has_dsp(adau)) {
           ^
   include/linux/compiler.h:58:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> sound/soc/codecs/adau1761.c:484:4: note: in expansion of macro 'if'
       if (adau17x1_has_dsp(adau)) {
       ^~
   cc1: some warnings being treated as errors

vim +/if +484 sound/soc/codecs/adau1761.c

   447	
   448	static int adau1761_set_bias_level(struct snd_soc_component *component,
   449					 enum snd_soc_bias_level level)
   450	{
   451		struct adau *adau = snd_soc_component_get_drvdata(component);
   452	
   453		switch (level) {
   454		case SND_SOC_BIAS_ON:
   455			break;
   456		case SND_SOC_BIAS_PREPARE:
   457			break;
   458		case SND_SOC_BIAS_STANDBY:
   459			regcache_cache_only(adau->regmap, false);
   460			regmap_update_bits(adau->regmap, ADAU17X1_CLOCK_CONTROL,
   461				ADAU17X1_CLOCK_CONTROL_SYSCLK_EN,
   462				ADAU17X1_CLOCK_CONTROL_SYSCLK_EN);
   463			if (snd_soc_component_get_bias_level(component) ==
   464			    SND_SOC_BIAS_OFF) {
   465				/*
   466				 * When going OFF -> STANDBY, the device can be in two
   467				 * states:
   468				 * 1) Power-cycled and reset
   469				 * 2) Soft reboot
   470				 * In the case of soft reboot, we need to sync the HW
   471				 * registers even if our regmap reports default values.
   472				 * Marking the cache as dirty ensures that both cases
   473				 * are handled.
   474				 */
   475				regcache_mark_dirty(adau->regmap);
   476				regcache_sync(adau->regmap);
   477				/*
   478				 * In order for FW to load correctly, the device needs
   479				 * DSP_RUN and DSP_ENABLE to be 0. This might not be the
   480				 * case for soft reboots. Ensure that DSP_RUN and
   481				 * DSP_ENABLE is 0 by bypassing the cache and write
   482				 * directly to HW when going OFF -> STANDBY.
   483				 */
 > 484				if (adau17x1_has_dsp(adau)) {
   485					regcache_cache_bypass(adau->regmap, true);
   486					regmap_write(adau->regmap, ADAU17X1_DSP_RUN, 0);
   487					regmap_write(adau->regmap,
   488						ADAU17X1_DSP_ENABLE, 0);
   489					regcache_cache_bypass(adau->regmap, false);
   490				}
   491			}
   492			break;
   493		case SND_SOC_BIAS_OFF:
   494			regmap_update_bits(adau->regmap, ADAU17X1_CLOCK_CONTROL,
   495				ADAU17X1_CLOCK_CONTROL_SYSCLK_EN, 0);
   496			regcache_cache_only(adau->regmap, true);
   497			break;
   498	
   499		}
   500		return 0;
   501	}
   502	

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