feat(mt8188): add audio support
For MT8188, MTK_AUDIO_SMC_OP_DOMAIN_SIDEBANDS is required for normal
mode switch.
- Add audio common code and chip specific code.
- Add new id (MTK_SIP_AUDIO_CONTROL) to mtk_sip_def.h.
- Enable for MT8188.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Change-Id: Iff4680cd0b520b2b519ecf30ecafe100f147cc62
diff --git a/plat/mediatek/drivers/audio/audio.c b/plat/mediatek/drivers/audio/audio.c
new file mode 100644
index 0000000..285c565
--- /dev/null
+++ b/plat/mediatek/drivers/audio/audio.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <common/debug.h>
+
+#include <audio.h>
+
+#include <mtk_sip_svc.h>
+
+#define MODULE_TAG "[AUDIO]"
+
+static u_register_t audio_smc_handler(u_register_t x1, u_register_t x2,
+ u_register_t x3, u_register_t x4,
+ void *handle, struct smccc_res *smccc_ret)
+{
+ uint32_t request_ops;
+ int ret;
+
+ request_ops = (uint32_t)x1;
+
+ switch (request_ops) {
+ case MTK_AUDIO_SMC_OP_DOMAIN_SIDEBANDS:
+ ret = set_audio_domain_sidebands();
+ break;
+ default:
+ ERROR("%s: %s: Unsupported request_ops %x\n",
+ MODULE_TAG, __func__, request_ops);
+ ret = -EIO;
+ break;
+ }
+
+ VERBOSE("%s: %s, request_ops = %x, ret = %d\n",
+ MODULE_TAG, __func__, request_ops, ret);
+ return ret;
+}
+/* Register SiP SMC service */
+DECLARE_SMC_HANDLER(MTK_SIP_AUDIO_CONTROL, audio_smc_handler);