diff mbox series

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

Message ID 20240307013458.23550-2-jason-jh.lin@mediatek.com (mailing list archive)
State New
Headers show
Series Add CMDQ API for upcoming ISP feature | expand

Commit Message

Jason-JH.Lin March 7, 2024, 1:34 a.m. UTC
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(+)

Comments

AngeloGioacchino Del Regno March 7, 2024, 10:33 a.m. UTC | #1
Il 07/03/24 02:34, Jason-JH.Lin ha scritto:
> 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>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
diff mbox series

Patch

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 {