[PATCH v2 1/4] soc: mediatek: mtk-cmdq: Add specific purpose register definitions for GCE

[Jason-JH.Lin <jason-jh.lin@mediatek.com>]

Add specific purpose register definitions for GCE, so CMDQ users can
use them as a buffer to store data.

Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
---
 include/linux/soc/mediatek/mtk-cmdq.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 649955d2cf5c..1dae80185f9f 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -14,6 +14,15 @@
 #define CMDQ_ADDR_HIGH(addr)	((u32)(((addr) >> 16) & GENMASK(31, 0)))
 #define CMDQ_ADDR_LOW(addr)	((u16)(addr) | BIT(1))
 
+/*
+ * Every cmdq thread has its own SPRs (Specific Purpose Registers),
+ * so there are 4 * N (threads) SPRs in GCE that shares the same indexes below.
+ */
+#define CMDQ_THR_SPR_IDX0	(0)
+#define CMDQ_THR_SPR_IDX1	(1)
+#define CMDQ_THR_SPR_IDX2	(2)
+#define CMDQ_THR_SPR_IDX3	(3)
+
 struct cmdq_pkt;
 
 struct cmdq_client_reg {
-- 
2.18.0