From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: [PATCH 1/3] ALSA: hda: add hdac_adsp_enable module flag Date: Thu, 30 Apr 2015 20:22:34 +0530 Message-ID: <1430405556-19166-1-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 mga03.intel.com (mga03.intel.com [134.134.136.65]) by alsa0.perex.cz (Postfix) with ESMTP id 8093D2617DE for ; Thu, 30 Apr 2015 16:52:02 +0200 (CEST) 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: liam.r.girdwood@linux.intel.com, tiwai@suse.de, broonie@kernel.org, Vinod Koul , patches.audio@intel.com 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: Vinod Koul --- include/sound/hdaudio.h | 11 +++++++++++ sound/hda/hda_bus_type.c | 4 ++++ 2 files changed, 15 insertions(+) diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b97c59eab7ab..015bec1079f9 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -12,6 +12,17 @@ #include #include +/* + * hdac_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 hdac_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 519914a12e8a..80e0570ffbf4 100644 --- a/sound/hda/hda_bus_type.c +++ b/sound/hda/hda_bus_type.c @@ -10,6 +10,10 @@ MODULE_DESCRIPTION("HD-audio bus"); MODULE_LICENSE("GPL"); +bool hdac_adsp_enable = false; +module_param(hdac_adsp_enable, bool, 0444); +MODULE_PARM_DESC(hdac_adsp_enable, "Enable aDSP on Intel HDA based systems"); + static int hda_bus_match(struct device *dev, struct device_driver *drv) { struct hdac_device *hdev = dev_to_hdac_dev(dev); -- 1.9.1