ASoC: Intel: avs: Add power management requests

Audio DSP supports low power states i.e.: transitions between D0 and D3
and D0-substates in form of D0i0 and D0i3. That process is a combination
of core and IPC operations. Here, Dx and D0ix IPC handlers are added.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-9-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/avs/messages.c b/sound/soc/intel/avs/messages.c
index 2e77579..f51f18d 100644 (file)
--- a/sound/soc/intel/avs/messages.c
+++ b/sound/soc/intel/avs/messages.c
@@ -400,3 +400,47 @@ int avs_ipc_get_large_config(struct avs_dev *adev, u16 module_id, u8 instance_id
 
        return 0;
 }
+
+int avs_ipc_set_dx(struct avs_dev *adev, u32 core_mask, bool powerup)
+{
+       union avs_module_msg msg = AVS_MODULE_REQUEST(SET_DX);
+       struct avs_ipc_msg request;
+       struct avs_dxstate_info dx;
+       int ret;
+
+       dx.core_mask = core_mask;
+       dx.dx_mask = powerup ? core_mask : 0;
+       request.header = msg.val;
+       request.data = &dx;
+       request.size = sizeof(dx);
+
+       ret = avs_dsp_send_msg(adev, &request, NULL);
+       if (ret)
+               avs_ipc_err(adev, &request, "set dx", ret);
+
+       return ret;
+}
+
+/*
+ * avs_ipc_set_d0ix - Set power gating policy (entering D0IX substates)
+ *
+ * @enable_pg: Whether to enable or disable power gating
+ * @streaming: Whether a stream is running when transitioning
+ */
+int avs_ipc_set_d0ix(struct avs_dev *adev, bool enable_pg, bool streaming)
+{
+       union avs_module_msg msg = AVS_MODULE_REQUEST(SET_D0IX);
+       struct avs_ipc_msg request = {{0}};
+       int ret;
+
+       msg.ext.set_d0ix.wake = enable_pg;
+       msg.ext.set_d0ix.streaming = streaming;
+
+       request.header = msg.val;
+
+       ret = avs_dsp_send_msg(adev, &request, NULL);
+       if (ret)
+               avs_ipc_err(adev, &request, "set d0ix", ret);
+
+       return ret;
+}

diff --git a/sound/soc/intel/avs/messages.h b/sound/soc/intel/avs/messages.h
index d744fe4..7ace78e 100644 (file)
--- a/sound/soc/intel/avs/messages.h
+++ b/sound/soc/intel/avs/messages.h
@@ -97,6 +97,8 @@ enum avs_module_msg_type {
        AVS_MOD_LARGE_CONFIG_SET = 4,
        AVS_MOD_BIND = 5,
        AVS_MOD_UNBIND = 6,
+       AVS_MOD_SET_DX = 7,
+       AVS_MOD_SET_D0IX = 8,
        AVS_MOD_DELETE_INSTANCE = 11,
 };
 
@@ -133,6 +135,10 @@ union avs_module_msg {
                                u32 dst_queue:3;
                                u32 src_queue:3;
                        } bind_unbind;
+                       struct {
+                               u32 wake:1;
+                               u32 streaming:1;
+                       } set_d0ix;
                } ext;
        };
 } __packed;
@@ -289,4 +295,13 @@ int avs_ipc_get_large_config(struct avs_dev *adev, u16 module_id, u8 instance_id
                             u8 param_id, u8 *request_data, size_t request_size,
                             u8 **reply_data, size_t *reply_size);
 
+/* DSP cores and domains power management messages */
+struct avs_dxstate_info {
+       u32 core_mask;  /* which cores are subject for power transition */
+       u32 dx_mask;    /* bit[n]=1 core n goes to D0, bit[n]=0 it goes to D3 */
+} __packed;
+
+int avs_ipc_set_dx(struct avs_dev *adev, u32 core_mask, bool powerup);
+int avs_ipc_set_d0ix(struct avs_dev *adev, bool enable_pg, bool streaming);
+
 #endif /* __SOUND_SOC_INTEL_AVS_MSGS_H */