From 63c13d61eafe4606f1c16c54da40c4eee78e9edf Mon Sep 17 00:00:00 2001
From: Erin Lo <erin.lo@mediatek.com>
Date: Tue, 12 Nov 2019 19:03:25 +0800
Subject: remoteproc/mediatek: add SCP support for mt8183

Provide a basic driver to control Cortex M4 co-processor

Signed-off-by: Erin Lo <erin.lo@mediatek.com>
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Link: https://lore.kernel.org/r/20191112110330.179649-3-pihsun@chromium.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 include/linux/remoteproc/mtk_scp.h | 65 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 include/linux/remoteproc/mtk_scp.h

(limited to 'include/linux/remoteproc')

diff --git a/include/linux/remoteproc/mtk_scp.h b/include/linux/remoteproc/mtk_scp.h
new file mode 100644
index 000000000000..80f5eab2ac2d
--- /dev/null
+++ b/include/linux/remoteproc/mtk_scp.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2019 MediaTek Inc.
+ */
+
+#ifndef _MTK_SCP_H
+#define _MTK_SCP_H
+
+#include <linux/platform_device.h>
+
+typedef void (*scp_ipi_handler_t) (void *data,
+				   unsigned int len,
+				   void *priv);
+struct mtk_scp;
+
+/**
+ * enum ipi_id - the id of inter-processor interrupt
+ *
+ * @SCP_IPI_INIT:	 The interrupt from scp is to notfiy kernel
+ *			 SCP initialization completed.
+ *			 IPI_SCP_INIT is sent from SCP when firmware is
+ *			 loaded. AP doesn't need to send IPI_SCP_INIT
+ *			 command to SCP.
+ *			 For other IPI below, AP should send the request
+ *			 to SCP to trigger the interrupt.
+ * @SCP_IPI_MAX:	 The maximum IPI number
+ */
+
+enum scp_ipi_id {
+	SCP_IPI_INIT = 0,
+	SCP_IPI_VDEC_H264,
+	SCP_IPI_VDEC_VP8,
+	SCP_IPI_VDEC_VP9,
+	SCP_IPI_VENC_H264,
+	SCP_IPI_VENC_VP8,
+	SCP_IPI_MDP_INIT,
+	SCP_IPI_MDP_DEINIT,
+	SCP_IPI_MDP_FRAME,
+	SCP_IPI_DIP,
+	SCP_IPI_ISP_CMD,
+	SCP_IPI_ISP_FRAME,
+	SCP_IPI_FD_CMD,
+	SCP_IPI_CROS_HOST_CMD,
+	SCP_IPI_MAX,
+};
+
+struct mtk_scp *scp_get(struct platform_device *pdev);
+void scp_put(struct mtk_scp *scp);
+
+struct device *scp_get_device(struct mtk_scp *scp);
+struct rproc *scp_get_rproc(struct mtk_scp *scp);
+
+int scp_ipi_register(struct mtk_scp *scp, u32 id, scp_ipi_handler_t handler,
+		     void *priv);
+void scp_ipi_unregister(struct mtk_scp *scp, u32 id);
+
+int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
+		 unsigned int wait);
+
+unsigned int scp_get_vdec_hw_capa(struct mtk_scp *scp);
+unsigned int scp_get_venc_hw_capa(struct mtk_scp *scp);
+
+void *scp_mapping_dm_addr(struct mtk_scp *scp, u32 mem_addr);
+
+#endif /* _MTK_SCP_H */
-- 
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