From eea84a7f0cdb693c261a7cf84bd4b3d81479c9a6 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Fri, 7 Mar 2025 13:28:13 +0200 Subject: ASoC: SOF: ipc4: Add support for Intel HW managed mic privacy messaging ACE3 (Panther Lake) introduced support for microphone privacy feature which can - in hardware - mute incoming audio data based on a state of a physical switch. The change in the privacy state is delivered through interface IP blocks and can only be handled by the link owner. In Intel platforms Soundwire is for example host owned, so the interrupt can only be handled by the host. Since the input stream is going to be muted by hardware, the host needs to send a message to firmware about the change in privacy so it can execute a fade out/in to enhance user experience. The support for microphone privacy can be queried from the HW_CONFIG data under the INTEL_MIC_PRIVACY_CAP tuple. This is Intel specific data, the core will pass it to platform code if the intel_configure_mic_privacy() callback is provided. Platform code can call sof_ipc4_mic_privacy_state_change() to send the IPC message to the firmware on state change. Signed-off-by: Peter Ujfalusi Reviewed-by: Ranjani Sridharan Reviewed-by: Liam Girdwood Reviewed-by: Kai Vehmanen Link: https://patch.msgid.link/20250307112816.1495-6-peter.ujfalusi@linux.intel.com Signed-off-by: Mark Brown --- sound/soc/sof/ipc4-loader.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'sound/soc/sof/ipc4-loader.c') diff --git a/sound/soc/sof/ipc4-loader.c b/sound/soc/sof/ipc4-loader.c index 6ad1ef0e53e8..d2f534d65edf 100644 --- a/sound/soc/sof/ipc4-loader.c +++ b/sound/soc/sof/ipc4-loader.c @@ -502,6 +502,39 @@ int sof_ipc4_query_fw_configuration(struct snd_sof_dev *sdev) offset += sizeof(*tuple) + tuple->size; } + /* Get the hardware configuration */ + msg.primary = SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG); + msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST); + msg.primary |= SOF_IPC4_MOD_ID(SOF_IPC4_MOD_INIT_BASEFW_MOD_ID); + msg.primary |= SOF_IPC4_MOD_INSTANCE(SOF_IPC4_MOD_INIT_BASEFW_INSTANCE_ID); + msg.extension = SOF_IPC4_MOD_EXT_MSG_PARAM_ID(SOF_IPC4_FW_PARAM_HW_CONFIG_GET); + + msg.data_size = sdev->ipc->max_payload_size; + + ret = iops->set_get_data(sdev, &msg, msg.data_size, false); + if (ret) + goto out; + + offset = 0; + while (offset < msg.data_size) { + tuple = (struct sof_ipc4_tuple *)((u8 *)msg.data_ptr + offset); + + switch (tuple->type) { + case SOF_IPC4_HW_CFG_INTEL_MIC_PRIVACY_CAPS: + if (ipc4_data->intel_configure_mic_privacy) { + struct sof_ipc4_intel_mic_privacy_cap *caps; + + caps = (struct sof_ipc4_intel_mic_privacy_cap *)tuple->value; + ipc4_data->intel_configure_mic_privacy(sdev, caps); + } + break; + default: + break; + } + + offset += sizeof(*tuple) + tuple->size; + } + out: kfree(msg.data_ptr); -- cgit v1.2.3