mailbox: mtk-cmdq: Use GCE_CTRL_BY_SW definition instead of number

Use GCE_CTRL_BY_SW definition instead of number
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/mtk-cmdq-mailbox.c

@@ -38,6 +38,7 @@
 #define CMDQ_THR_PRIORITY		0x40
 
 #define GCE_GCTL_VALUE			0x48
+#define GCE_CTRL_BY_SW				GENMASK(2, 0)
 
 #define CMDQ_THR_ACTIVE_SLOT_CYCLES	0x3200
 #define CMDQ_THR_ENABLED		0x1
@@ -129,7 +130,8 @@ static void cmdq_init(struct cmdq *cmdq)
 
 	WARN_ON(clk_bulk_enable(cmdq->gce_num, cmdq->clocks));
 	if (cmdq->control_by_sw)
-		writel(0x7, cmdq->base + GCE_GCTL_VALUE);
+		writel(GCE_CTRL_BY_SW, cmdq->base + GCE_GCTL_VALUE);
+
 	writel(CMDQ_THR_ACTIVE_SLOT_CYCLES, cmdq->base + CMDQ_THR_SLOT_CYCLES);
 	for (i = 0; i <= CMDQ_MAX_EVENT; i++)
 		writel(i, cmdq->base + CMDQ_SYNC_TOKEN_UPDATE);