From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: [PATCH v2 1/2] ALSA: hda: add snd_adsp_enable module flag Date: Thu, 18 Jun 2015 12:08:24 +0530 Message-ID: <1434609505-776-2-git-send-email-vinod.koul@intel.com> References: <1434609505-776-1-git-send-email-vinod.koul@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id 784E826616A for ; Thu, 18 Jun 2015 08:36:55 +0200 (CEST) In-Reply-To: <1434609505-776-1-git-send-email-vinod.koul@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org Cc: tiwai@suse.de, patches.audio@intel.com, liam.r.girdwood@linux.intel.com, Vinod Koul , broonie@kernel.org, Jeeja KP List-Id: alsa-devel@alsa-project.org Some Intel HDA controllers sport a DSP. These systems can also be enabled with ASoC HDA driver as well. So add a flag in hda-core to enable/disable aDSP. This flag for now is false, and should be true once the ASoC based systems mature. The integrators/OS vendors can configure this flag based on system preference. Signed-off-by: Jeeja KP Signed-off-by: Vinod Koul --- include/sound/hdaudio.h | 11 +++++++++++ sound/hda/hda_bus_type.c | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index 4caf1fde8a4f..7c4dd26abd4e 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -13,6 +13,17 @@ #include #include +/* + * snd_adsp_enable: exported HD-A aDSP enable configuration. + * + * Some Intel HDA controllers sport a DSP, for these platform we can bypass + * aDSP and use as regular HDA controller or enable aDSP and use aDSP + * along with I2S codecs etc. + * hdac_adsp_enable would enable the aDSP based HDA controller if the + * platform supports it + */ +extern bool snd_adsp_enable; + /* codec node id */ typedef u16 hda_nid_t; diff --git a/sound/hda/hda_bus_type.c b/sound/hda/hda_bus_type.c index 89c2711baaaf..8fb4e8b1398e 100644 --- a/sound/hda/hda_bus_type.c +++ b/sound/hda/hda_bus_type.c @@ -10,6 +10,12 @@ MODULE_DESCRIPTION("HD-audio bus"); MODULE_LICENSE("GPL"); +bool snd_adsp_enable = false; +EXPORT_SYMBOL_GPL(snd_adsp_enable); + +module_param(snd_adsp_enable, bool, 0444); +MODULE_PARM_DESC(snd_adsp_enable, "HD-A aDSP enable configuration"); + /** * hdac_get_device_id - gets the hdac device id entry * @hdev: HD-audio core device -- 1.9.1