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Fri, 25 Sep 2026 09:11:21 -0700 (PDT) From: Srinivas Kandagatla To: Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bard Liao , Pierre-Louis Bossart , Charles Keepax Cc: Liam Girdwood , Jaroslav Kysela , Takashi Iwai , Maciej Strozek , linux-sound@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, patches@opensource.cirrus.com, Srinivas Kandagatla Subject: [PATCH v5 1/7] ASoC: SDCA: allow building without ACPI Date: Fri, 25 Sep 2026 17:10:42 +0100 Message-ID: <20260925161049.758913-2-srinivas.kandagatla@oss.qualcomm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260925161049.758913-1-srinivas.kandagatla@oss.qualcomm.com> References: <20260925161049.758913-1-srinivas.kandagatla@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI1MDA2NCBTYWx0ZWRfXxEwZn8mhYn/k UfIdqTwfcTSd7xjAyivC3loYyQrs2zwJFnMXGRWeRpKtkPueBQSyUMlS0+XzmawRLb4E5/TJReP Z4H3+08aeO2eANaadCFdmEd5YkMcBWE= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI1MDA2NCBTYWx0ZWRfX+ezJ5SeGCNo4 yEYEjIy00SDnnT1IzumJrCtMzD3Ne8WVKkrMJFaaIj0l+HPBO+dtAzHYhnXUFVH7IROgRZcgh2w Bt/lYUjO8ZRpE+K6DJKshAhVg0vJLq6MCMoutTGWKdXg7Sw/QxN/ETJ38aSTkSjmKwkVu+Kzu30 aSysDbKSszrW0U1XB3M9vB8Tv1ve/2KdS7rp9ggut/ZP56VBxmnIq8r4l1S7w+OQaxlTTkvgdvF cLXQC631U3+cbQN80XJYeqgZ5MUACRIvPKWwykYPMPhURauwXxN4zy/KJhYSgmMUq9vapKHLXpP 7ngepxZO/Yxt82p+ccFR3U00Ktl/MZdFsvpQGO9IiO5fkAr62eEba0zDRRBF59ri63vJ6124JFg ndwIjURjBd6PbsiZo59RnAAMUiqtcFvvyhUOmgS/1AZ5tAlrHa3dHZe5RNmspCSvaB7I5MdeRdj uBi73BpzVYx/uUPw4Uw== X-Proofpoint-GUID: uyu3fkgfdl1rD3RBgeRJ484Ya0bWuM_6 X-Proofpoint-ORIG-GUID: uyu3fkgfdl1rD3RBgeRJ484Ya0bWuM_6 X-Authority-Analysis: v=2.4 cv=Hf2B3SE8 c=1 sm=1 tr=0 ts=6ab69d2b cx=c_pps a=N1BjEkVkxJi3uNfLdpvX3g==:117 a=ZsC4DHZuhs/kKio7QBcDoQ==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=QBLm4htSTobWmsIIepQA:9 a=O8hF6Hzn-FEA:10 a=crWF4MFLhNY0qMRaF8an:22 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=2026-09-25_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 malwarescore=0 phishscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609250064 The SDCA class driver is useful on non-ACPI platforms where the topology is supplied statically via sdca_class_ops.populate_function. Drop 'depends on ACPI' from SND_SOC_SDCA and guard the ACPI-specific enumeration helpers (sdca_lookup_functions, sdca_lookup_swft, sdca_lookup_interface_revision) in sdca_device.c and sdca_functions.c with IS_ENABLED(CONFIG_ACPI), providing empty stubs when ACPI is off. The fwnode-based DisCo parser (sdca_parse_function() and its helpers in sdca_functions.c) stays compiled unconditionally: it uses only fwnode_* APIs and can in principle be reached from any firmware backend that supplies a matching device tree. Signed-off-by: Srinivas Kandagatla --- include/sound/sdca.h | 23 ++++++++++++++++++----- sound/soc/sdca/Kconfig | 6 ++++-- sound/soc/sdca/sdca_device.c | 4 ++++ sound/soc/sdca/sdca_functions.c | 2 ++ 4 files changed, 28 insertions(+), 7 deletions(-) diff --git a/include/sound/sdca.h b/include/sound/sdca.h index 2bdf4e333e04..db2672b3aae2 100644 --- a/include/sound/sdca.h +++ b/include/sound/sdca.h @@ -60,20 +60,16 @@ enum sdca_quirk { SDCA_QUIRKS_SKIP_FUNC_TYPE_PATCHING, }; -#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA) +#if IS_ENABLED(CONFIG_SND_SOC_SDCA) -void sdca_lookup_functions(struct sdw_slave *slave); void sdca_lookup_swft(struct sdw_slave *slave); -void sdca_lookup_interface_revision(struct sdw_slave *slave); bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk); int sdca_dev_register_functions(struct sdw_slave *slave); void sdca_dev_unregister_functions(struct sdw_slave *slave); #else -static inline void sdca_lookup_functions(struct sdw_slave *slave) {} static inline void sdca_lookup_swft(struct sdw_slave *slave) {} -static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {} static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk) { return false; @@ -88,4 +84,21 @@ static inline void sdca_dev_unregister_functions(struct sdw_slave *slave) {} #endif +/* + * Called from the SoundWire bus during peripheral enumeration; gated on + * ACPI to avoid a soundwire_bus <-> snd_soc_sdca module cycle on DT builds + * (where the bodies are stubs anyway). + */ +#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA) + +void sdca_lookup_functions(struct sdw_slave *slave); +void sdca_lookup_interface_revision(struct sdw_slave *slave); + +#else + +static inline void sdca_lookup_functions(struct sdw_slave *slave) {} +static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {} + +#endif + #endif diff --git a/sound/soc/sdca/Kconfig b/sound/soc/sdca/Kconfig index 4c0dcb9ff3b9..c371323cc36e 100644 --- a/sound/soc/sdca/Kconfig +++ b/sound/soc/sdca/Kconfig @@ -3,11 +3,13 @@ menu "SoundWire (SDCA)" config SND_SOC_SDCA tristate "SDCA core support" - depends on ACPI select AUXILIARY_BUS help This option enables support for the MIPI SoundWire Device - Class for Audio (SDCA). + Class for Audio (SDCA). The ACPI-specific enumeration + helpers are only built when CONFIG_ACPI is enabled; on + non-ACPI platforms the SDCA function data is supplied + statically by the codec driver. config SND_SOC_SDCA_HID bool "SDCA HID support" diff --git a/sound/soc/sdca/sdca_device.c b/sound/soc/sdca/sdca_device.c index 4bcd8d1fdff8..3f302bfa5457 100644 --- a/sound/soc/sdca/sdca_device.c +++ b/sound/soc/sdca/sdca_device.c @@ -15,6 +15,7 @@ #include #include +#if IS_ENABLED(CONFIG_ACPI) void sdca_lookup_interface_revision(struct sdw_slave *slave) { struct fwnode_handle *fwnode = slave->dev.fwnode; @@ -45,6 +46,9 @@ void sdca_lookup_swft(struct sdw_slave *slave) devm_add_action_or_reset(&slave->dev, devm_acpi_table_put, slave->sdca_data.swft); } +#else +void sdca_lookup_swft(struct sdw_slave *slave) { } +#endif EXPORT_SYMBOL_NS(sdca_lookup_swft, "SND_SOC_SDCA"); static bool sdca_device_quirk_rt712_vb(struct sdw_slave *slave) diff --git a/sound/soc/sdca/sdca_functions.c b/sound/soc/sdca/sdca_functions.c index f39008ac0e7d..1eb6418e132d 100644 --- a/sound/soc/sdca/sdca_functions.c +++ b/sound/soc/sdca/sdca_functions.c @@ -25,6 +25,7 @@ */ #define SDCA_PROPERTY_LENGTH 64 +#if IS_ENABLED(CONFIG_ACPI) static int patch_sdca_function_type(u32 interface_revision, u32 *function_type) { /* @@ -201,6 +202,7 @@ void sdca_lookup_functions(struct sdw_slave *slave) acpi_dev_for_each_child(adev, find_sdca_function, &slave->sdca_data); } EXPORT_SYMBOL_NS(sdca_lookup_functions, "SND_SOC_SDCA"); +#endif struct raw_init_write { __le32 addr; -- 2.53.0