linux-kernel - RE: [PATCH] ASoC: Intel: sof_rt5682: remove SOF_RT1015_SPEAKER_AMP

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Message-ID: <CY5PR11MB6257A5CC3976FAEA2C713A4997559@CY5PR11MB6257.namprd11.prod.outlook.com>
Date:   Tue, 27 Sep 2022 13:16:24 +0000
From:   "Lu, Brent" <brent.lu@...el.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
CC:     "Rojewski, Cezary" <cezary.rojewski@...el.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Peter Ujfalusi <peter.ujfalusi@...ux.intel.com>,
        Bard Liao <yung-chuan.liao@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        "Jaroslav Kysela" <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        "Zhi, Yong" <yong.zhi@...el.com>,
        "Gopal, Vamshi Krishna" <vamshi.krishna.gopal@...el.com>,
        Ajye Huang <ajye.huang@...il.com>,
        "Chiang, Mac" <mac.chiang@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] ASoC: Intel: sof_rt5682: remove
 SOF_RT1015_SPEAKER_AMP_100FS flag

> > +		case SND_SOC_DAIFMT_DSP_A:
> > +		case SND_SOC_DAIFMT_DSP_B:
> > +			/* 4-slot TDM */
> > +			ret = snd_soc_dai_set_tdm_slot(codec_dai,
> > +						       rt1015_tdm_mask[i].tx,
> > +						       rt1015_tdm_mask[i].rx,
> > +						       4,
> > +						       params_width(params));
> 
> The changes look ok, just wondering if we can avoid hard-coding those 4 values.
> Can we not get the number of TDM slots from topology and/or dailink
> configuration?
> 
> 

I think TDM slot number is possible but not TX/RX mask. What we have in topology
is union of tx/rx mask of all channels. We don't know the mask of specific channel in
DAI_CONFIG.

DAI_CONFIG(SSP, 0, BOARD_HP_BE_ID, SSP0-Codec,
        SSP_CONFIG(I2S, SSP_CLOCK(mclk, 19200000, codec_mclk_in),
                SSP_CLOCK(bclk, 2400000, codec_slave),
                SSP_CLOCK(fsync, 48000, codec_slave),
                SSP_TDM(2, 25, 3, 3),
                SSP_CONFIG_DATA(SSP, 0, 24, 0, 0, 0, SSP_CC_BCLK_ES)))')

Regards,
Brent