1 files changed, 83 insertions, 0 deletions
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
new file mode 100644
index 000000000..a8f0070c7
--- /dev/null
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ *
+ */
+
+#ifndef __MTK_CMDQ_MAILBOX_H__
+#define __MTK_CMDQ_MAILBOX_H__
+
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#define CMDQ_INST_SIZE			8 /* instruction is 64-bit */
+#define CMDQ_SUBSYS_SHIFT		16
+#define CMDQ_OP_CODE_SHIFT		24
+#define CMDQ_JUMP_PASS			CMDQ_INST_SIZE
+
+#define CMDQ_WFE_UPDATE			BIT(31)
+#define CMDQ_WFE_UPDATE_VALUE		BIT(16)
+#define CMDQ_WFE_WAIT			BIT(15)
+#define CMDQ_WFE_WAIT_VALUE		0x1
+
+/*
+ * WFE arg_b
+ * bit 0-11: wait value
+ * bit 15: 1 - wait, 0 - no wait
+ * bit 16-27: update value
+ * bit 31: 1 - update, 0 - no update
+ */
+#define CMDQ_WFE_OPTION			(CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE)
+
+/** cmdq event maximum */
+#define CMDQ_MAX_EVENT			0x3ff
+
+/*
+ * CMDQ_CODE_MASK:
+ *   set write mask
+ *   format: op mask
+ * CMDQ_CODE_WRITE:
+ *   write value into target register
+ *   format: op subsys address value
+ * CMDQ_CODE_JUMP:
+ *   jump by offset
+ *   format: op offset
+ * CMDQ_CODE_WFE:
+ *   wait for event and clear
+ *   it is just clear if no wait
+ *   format: [wait]  op event update:1 to_wait:1 wait:1
+ *           [clear] op event update:1 to_wait:0 wait:0
+ * CMDQ_CODE_EOC:
+ *   end of command
+ *   format: op irq_flag
+ */
+enum cmdq_code {
+	CMDQ_CODE_MASK = 0x02,
+	CMDQ_CODE_WRITE = 0x04,
+	CMDQ_CODE_POLL = 0x08,
+	CMDQ_CODE_JUMP = 0x10,
+	CMDQ_CODE_WFE = 0x20,
+	CMDQ_CODE_EOC = 0x40,
+	CMDQ_CODE_READ_S = 0x80,
+	CMDQ_CODE_WRITE_S = 0x90,
+	CMDQ_CODE_WRITE_S_MASK = 0x91,
+	CMDQ_CODE_LOGIC = 0xa0,
+};
+
+struct cmdq_cb_data {
+	int			sta;
+	struct cmdq_pkt		*pkt;
+};
+
+struct cmdq_pkt {
+	void			*va_base;
+	dma_addr_t		pa_base;
+	size_t			cmd_buf_size; /* command occupied size */
+	size_t			buf_size; /* real buffer size */
+	void			*cl;
+};
+
+u8 cmdq_get_shift_pa(struct mbox_chan *chan);
+
+#endif /* __MTK_CMDQ_MAILBOX_H__ */