IPC4 uses the SET_DX message to enable/disable cores managed by the DSP.
The dx_state.core_mask indicates which core is going to change state,
the dx_state.dx_mask is to power on (1) or off (0) the core.
In the dx_mask only those bits (cores) checked which bit is set in the
core_mask, other bits (cores) ignored.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
include/sound/sof/ipc4/header.h | 8 ++++++++
sound/soc/sof/ipc4.c | 26 ++++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/include/sound/sof/ipc4/header.h b/include/sound/sof/ipc4/header.h
index b8b8e5b5e3e1..a795deacc2ea 100644
--- a/include/sound/sof/ipc4/header.h
+++ b/include/sound/sof/ipc4/header.h
@@ -385,6 +385,14 @@ struct sof_ipc4_fw_version {
uint16_t build;
} __packed;
+/* Payload data for SOF_IPC4_MOD_SET_DX */
+struct sof_ipc4_dx_state_info {
+ /* core(s) to apply the change */
+ uint32_t core_mask;
+ /* core state: 0: put core_id to D3; 1: put core_id to D0 */
+ uint32_t dx_mask;
+} __packed __aligned(4);
+
/* Reply messages */
/*
diff --git a/sound/soc/sof/ipc4.c b/sound/soc/sof/ipc4.c
index 658802c86685..b2cb92745ec6 100644
--- a/sound/soc/sof/ipc4.c
+++ b/sound/soc/sof/ipc4.c
@@ -597,10 +597,36 @@ static void sof_ipc4_rx_msg(struct snd_sof_dev *sdev)
}
}
+static int sof_ipc4_set_core_state(struct snd_sof_dev *sdev, int core_idx, bool on)
+{
+ struct sof_ipc4_dx_state_info dx_state;
+ struct sof_ipc4_msg msg;
+
+ dx_state.core_mask = BIT(core_idx);
+ if (on)
+ dx_state.dx_mask = BIT(core_idx);
+ else
+ dx_state.dx_mask = 0;
+
+ msg.primary = SOF_IPC4_MSG_TYPE_SET(SOF_IPC4_MOD_SET_DX);
+ msg.primary |= SOF_IPC4_MSG_DIR(SOF_IPC4_MSG_REQUEST);
+ msg.primary |= SOF_IPC4_MSG_TARGET(SOF_IPC4_MODULE_MSG);
+ msg.extension = 0;
+ msg.data_ptr = &dx_state;
+ msg.data_size = sizeof(dx_state);
+
+ return sof_ipc4_tx_msg(sdev, &msg, msg.data_size, NULL, 0, false);
+}
+
+static const struct sof_ipc_pm_ops ipc4_pm_ops = {
+ .set_core_state = sof_ipc4_set_core_state,
+};
+
const struct sof_ipc_ops ipc4_ops = {
.tx_msg = sof_ipc4_tx_msg,
.rx_msg = sof_ipc4_rx_msg,
.set_get_data = sof_ipc4_set_get_data,
.get_reply = sof_ipc4_get_reply,
+ .pm = &ipc4_pm_ops,
.fw_loader = &ipc4_loader_ops,
};
--
2.36.1
