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Date:   Tue, 31 Oct 2023 09:07:43 +0100
Message-ID: <87bkcfw6y8.wl-tiwai@suse.de>
From:   Takashi Iwai <tiwai@suse.de>
To:     Brady Norander <bradynorander@gmail.com>
Cc:     Takashi Iwai <tiwai@suse.com>, Mark Brown <broonie@kernel.org>,
        alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org,
        Jaroslav Kysela <perex@perex.cz>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Bard Liao <yung-chuan.liao@linux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
        Cezary Rojewski <cezary.rojewski@intel.com>
Subject: Re: [PATCH v2] ALSA: hda: intel-dsp-cfg: Use AVS driver on SKL/KBL/APL Chromebooks
In-Reply-To: <2f5ffc3b-01be-413d-843e-8654d953f56f@gmail.com>
References: <2f5ffc3b-01be-413d-843e-8654d953f56f@gmail.com>
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On Mon, 30 Oct 2023 19:58:52 +0100,
Brady Norander wrote:
> 
> The legacy SKL driver no longer works properly on these Chromebook
> platforms. Use the new AVS driver by default instead.
> 
> Signed-off-by: Brady Norander <bradynorander@gmail.com>

It's fine to switch to the new and more maintained AVS (once after the
topology is ready), but I wonder how the breakage of SKL happened.
Was it our intentional breakage in the past?  If so, why can't we
recover it?


thanks,

Takashi

> ---
> v2: Only use quirk if AVS is enabled
>  sound/hda/intel-dsp-config.c | 26 +++++++++++++++++---------
>  1 file changed, 17 insertions(+), 9 deletions(-)
> 
> diff --git a/sound/hda/intel-dsp-config.c b/sound/hda/intel-dsp-config.c
> index 756fa0aa69bb..e056aca01900 100644
> --- a/sound/hda/intel-dsp-config.c
> +++ b/sound/hda/intel-dsp-config.c
> @@ -16,10 +16,11 @@
>  static int dsp_driver;
> 
>  module_param(dsp_driver, int, 0444);
> -MODULE_PARM_DESC(dsp_driver, "Force the DSP driver for Intel DSP
> (0=auto, 1=legacy, 2=SST, 3=SOF)");
> +MODULE_PARM_DESC(dsp_driver, "Force the DSP driver for Intel DSP
> (0=auto, 1=legacy, 2=SST, 3=SOF, 4=AVS)");
> 
>  #define FLAG_SST			BIT(0)
>  #define FLAG_SOF			BIT(1)
> +#define FLAG_AVS			BIT(2)
>  #define FLAG_SST_ONLY_IF_DMIC		BIT(15)
>  #define FLAG_SOF_ONLY_IF_DMIC		BIT(16)
>  #define FLAG_SOF_ONLY_IF_SOUNDWIRE	BIT(17)
> @@ -56,7 +57,7 @@ static const struct config_entry config_table[] = {
>  /*
>   * Apollolake (Broxton-P)
>   * the legacy HDAudio driver is used except on Up Squared (SOF) and
> - * Chromebooks (SST), as well as devices based on the ES8336 codec
> + * Chromebooks (AVS), as well as devices based on the ES8336 codec
>   */
>  #if IS_ENABLED(CONFIG_SND_SOC_SOF_APOLLOLAKE)
>  	{
> @@ -79,9 +80,9 @@ static const struct config_entry config_table[] = {
>  		.codec_hid =  &essx_83x6,
>  	},
>  #endif
> -#if IS_ENABLED(CONFIG_SND_SOC_INTEL_APL)
> +#if IS_ENABLED(CONFIG_SND_SOC_INTEL_AVS)
>  	{
> -		.flags = FLAG_SST,
> +		.flags = FLAG_AVS,
>  		.device = PCI_DEVICE_ID_INTEL_HDA_APL,
>  		.dmi_table = (const struct dmi_system_id []) {
>  			{
> @@ -96,13 +97,13 @@ static const struct config_entry config_table[] = {
>  #endif
>  /*
>   * Skylake and Kabylake use legacy HDAudio driver except for Google
> - * Chromebooks (SST)
> + * Chromebooks (AVS)
>   */
> 
>  /* Sunrise Point-LP */
> -#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL)
> +#if IS_ENABLED(CONFIG_SND_SOC_INTEL_AVS)
>  	{
> -		.flags = FLAG_SST,
> +		.flags = FLAG_AVS,
>  		.device = PCI_DEVICE_ID_INTEL_HDA_SKL_LP,
>  		.dmi_table = (const struct dmi_system_id []) {
>  			{
> @@ -114,15 +115,17 @@ static const struct config_entry config_table[] = {
>  			{}
>  		}
>  	},
> +#endif
> +#if IS_ENABLED(CONFIG_SND_SOC_INTEL_SKL)
>  	{
>  		.flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
>  		.device = PCI_DEVICE_ID_INTEL_HDA_SKL_LP,
>  	},
>  #endif
>  /* Kabylake-LP */
> -#if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL)
> +#if IS_ENABLED(CONFIG_SND_SOC_INTEL_AVS)
>  	{
> -		.flags = FLAG_SST,
> +		.flags = FLAG_AVS,
>  		.device = PCI_DEVICE_ID_INTEL_HDA_KBL_LP,
>  		.dmi_table = (const struct dmi_system_id []) {
>  			{
> @@ -134,6 +137,8 @@ static const struct config_entry config_table[] = {
>  			{}
>  		}
>  	},
> +#endif
> +#if IS_ENABLED(CONFIG_SND_SOC_INTEL_KBL)
>  	{
>  		.flags = FLAG_SST | FLAG_SST_ONLY_IF_DMIC,
>  		.device = PCI_DEVICE_ID_INTEL_HDA_KBL_LP,
> @@ -667,6 +672,9 @@ int snd_intel_dsp_driver_probe(struct pci_dev *pci)
>  		}
>  	}
> 
> +	if (cfg->flags & FLAG_AVS)
> +		return SND_INTEL_DSP_DRIVER_AVS;
> +
>  	return SND_INTEL_DSP_DRIVER_LEGACY;
>  }
>  EXPORT_SYMBOL_GPL(snd_intel_dsp_driver_probe);
> -- 
> 2.42.0
>