linux-kernel - [PATCH v1, 3/5] mailbox: mediatek: add control_by

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Date:   Sat, 5 Dec 2020 12:15:26 +0800
From:   Yongqiang Niu <yongqiang.niu@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        CK Hu <ck.hu@...iatek.com>
CC:     Jassi Brar <jassisinghbrar@...il.com>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v1, 3/5] mailbox: mediatek: add control_by_sw private data

add control_by_sw private data

Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index 5665b6e..1c01fe0 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -36,6 +36,8 @@
 #define CMDQ_THR_WAIT_TOKEN		0x30
 #define CMDQ_THR_PRIORITY		0x40
 
+#define GCE_GCTL_VALUE			0x48
+
 #define CMDQ_THR_ACTIVE_SLOT_CYCLES	0x3200
 #define CMDQ_THR_ENABLED		0x1
 #define CMDQ_THR_DISABLED		0x0
@@ -76,11 +78,13 @@ struct cmdq {
 	struct clk		*clock;
 	bool			suspended;
 	u8			shift_pa;
+	bool			control_by_sw;
 };
 
 struct gce_plat {
 	u32 thread_nr;
 	u8 shift;
+	bool control_by_sw;
 };
 
 u8 cmdq_get_shift_pa(struct mbox_chan *chan)
@@ -121,6 +125,8 @@ static void cmdq_init(struct cmdq *cmdq)
 	int i;
 
 	WARN_ON(clk_enable(cmdq->clock) < 0);
+	if (cmdq->control_by_sw)
+		writel(0x7, 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);
@@ -536,6 +542,7 @@ static int cmdq_probe(struct platform_device *pdev)
 
 	cmdq->thread_nr = plat_data->thread_nr;
 	cmdq->shift_pa = plat_data->shift;
+	cmdq->control_by_sw = plat_data->control_by_sw;
 	cmdq->irq_mask = GENMASK(cmdq->thread_nr - 1, 0);
 	err = devm_request_irq(dev, cmdq->irq, cmdq_irq_handler, IRQF_SHARED,
 			       "mtk_cmdq", cmdq);
-- 
1.8.1.1.dirty