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Tue, 15 Sep 2026 09:57:11 -0700 (PDT) From: Srinivas Kandagatla To: Mark Brown Cc: Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Pierre-Louis Bossart , Charles Keepax , Maciej Strozek , Bard Liao , Rob Herring , Krzysztof Kozlowski , Conor Dooley , patches@opensource.cirrus.com, linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Kandagatla Subject: [PATCH v3 0/8] ASoC: SDCA: Qualcomm Tambora (WCD9378) SDCA codec support Date: Tue, 15 Sep 2026 17:56:42 +0100 Message-ID: <20260915165652.914893-1-srinivas.kandagatla@oss.qualcomm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: ISNFINXMrbszyGgGv-dJ6H6kUIe2gmmz X-Authority-Analysis: v=2.4 cv=cehHPXDM c=1 sm=1 tr=0 ts=6aa978ea cx=c_pps a=P2rfLEam3zuxRRdjJWA2cw==:117 a=ZsC4DHZuhs/kKio7QBcDoQ==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=NRmDave84CxBQQXzKXEA:9 a=O8hF6Hzn-FEA:10 a=ODZdjJIeia2B_SHc_B0f:22 X-Proofpoint-GUID: ISNFINXMrbszyGgGv-dJ6H6kUIe2gmmz X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE1MDI0NyBTYWx0ZWRfX0FCK8PzkiHON TqL4q/aK33jt+OFehzXpKDSECY0KdXBsDODFpFwABUogoJ1eGzHBQLagjY8W6ZzTHi1HH4OFxaa WmPs2cnjc9F/FTAHdNnScm3MUs9GwcI= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE1MDI0NyBTYWx0ZWRfX2tWF0mUiaOBH 47/ku6g1WZYkD7864F90l4sc0LvxlUSmgi6MJw/mkzvUCRxV+mL3VCYXSOnTVocM+RaQ4xDFfK/ 77Ac1TMROUkh4wqfwfO9MGGM3RcpCW3kUBxiXg9WMdX3XZsDmQLm/C/QHUi4mrKj10QsQUlW6BR MlvMMMzsrc85UALD6OqxKExLVWDEXK+8zg7EKZzoEZSLfajbgjqhPDpdSNAewn5kwCH+Xs3MwcM 1m2lVW6KVBBUucmUpZhfvq6cArOC0HDq7AHlfY7ma6cKsid2KV1XnZlI8A1ZaBO97VuzpUW6npL DnqfclugKyZM6jbNIGQbPvPBElVXDTtVoGMR7IOFYX+b/0dcpGVJkbxsTxibefzBVW8reH53hg7 os1GFZ5PSjNE6qXKFEOr5UxbtHtlOddt9994PIvm1Gd/fMMSpDOjYixtETtZjAsWuv4wsPtwauc +/m8e4NZbf+1s2TzyXQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-15_04,2026-09-15_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 impostorscore=0 spamscore=0 phishscore=0 malwarescore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609150247 This series extends the SDCA class driver to work on DT / non-ACPI platforms via a codec-provided static topology, and adds the Qualcomm WCD9378 (Tambora) codec as the first user driven in SDCA / compute mode. Tested on the Snapdragon X2 Elite Glymur CRD. Patches 1-6 extend the SDCA class helpers: - Kconfig gate to build the class without ACPI enabled. - PM helpers keyed on a codec-embedded struct sdca_class_drv, so codec drivers can build their own dev_pm_ops. - Class SoundWire probe/remove exposed as library functions callable from codec-specific SDW slave drivers. - class_ops with a populate_function hook so codec drivers can supply the SDCA function payload from static tables on DT / non-DisCo platforms. - Class function driver registers SDCA_FUNCTION_TYPE_SIMPLE_JACK, and resolves sound-dai cells by entity index. - sdca_apply_default_control_classifiers() applies the same is_volatile / has_reset flags that the DisCo/ACPI parser would. Note: None of these are functional changes in sdca core, all of these are helper functions to allow non-ACPI users to use sdca core. Patches 7-8 add the WCD9378 SDCA / compute-mode codec: - dt-bindings for the SoundWire slave in compute mode. - Codec driver split across wcd9378-sdw.c (SoundWire plumbing) and wcd9378-sdca.c (SDCA topology + class_ops), sharing a wcd9378-sdca.h header. A future mobile-mode driver can plug into the same module by adding its own files. Testing: HPH playback and headset-mic capture confirmed on the Snapdragon X2 Elite Glymur CRD. Will test it on Lenovo T14s. Jack detection is not wired up in this series. Changes since v2 [1]: - Un-export sdca_class_pm_ops and per-op wrappers; keep them static and let codecs compose their own dev_pm_ops. - Drop the exported sdca_class_read_prop() helper; codecs open-code the four lines locally. - class_function: check the codec-provided ops hook first, fall back to sdca_parse_function() only when a firmware node is present. - Rename sdca_class_hw_ops to sdca_class_ops; populate_function does no bus I/O. - Drop the hw_init callback; codec users moved bring-up into their own SoundWire probe. - wcd9378-sdca: MIC_BIAS fixed at 2.75 V via the init_table; drop stale qcom,micbias2-microvolt reference from the commit message. - Rebased on b-next-20260911. [1] https://lore.kernel.org/all/20260907083727.733705-1-srinivas.kandagatla@oss.qualcomm.com/ Srinivas Kandagatla (8): ASoC: SDCA: allow building without ACPI ASoC: SDCA: export PM helpers keyed on sdca_class_drv ASoC: SDCA: expose class SoundWire probe/remove as library ASoC: SDCA: add class_ops with populate_function ASoC: SDCA: class_function: xlate sound-dai cell by entity index ASoC: SDCA: add sdca_apply_default_control_classifiers() helper dt-bindings: sound: qcom: add Tambora WCD9378 SDCA codec ASoC: codecs: add Qualcomm Tambora (WCD9378) SDCA codec .../bindings/sound/qcom,wcd9378-sdw.yaml | 91 ++ include/sound/sdca.h | 23 +- include/sound/sdca_class.h | 70 ++ include/sound/sdca_function.h | 2 + sound/soc/codecs/Kconfig | 11 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/wcd9378-sdca.c | 1005 +++++++++++++++++ sound/soc/codecs/wcd9378-sdca.h | 20 + sound/soc/codecs/wcd9378-sdw.c | 52 + sound/soc/sdca/Kconfig | 6 +- sound/soc/sdca/sdca_class.c | 148 ++- sound/soc/sdca/sdca_class.h | 35 - sound/soc/sdca/sdca_class_function.c | 45 +- sound/soc/sdca/sdca_device.c | 4 + sound/soc/sdca/sdca_functions.c | 31 + 15 files changed, 1474 insertions(+), 71 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/qcom,wcd9378-sdw.yaml create mode 100644 include/sound/sdca_class.h create mode 100644 sound/soc/codecs/wcd9378-sdca.c create mode 100644 sound/soc/codecs/wcd9378-sdca.h create mode 100644 sound/soc/codecs/wcd9378-sdw.c delete mode 100644 sound/soc/sdca/sdca_class.h -- 2.53.0