linux-kernel - [PATCH v4, 3/3] mailbox: cmdq: add mt8192 support

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Message-ID: <1618228290-18413-4-git-send-email-yongqiang.niu@mediatek.com>
Date:   Mon, 12 Apr 2021 19:51:30 +0800
From:   Yongqiang Niu <yongqiang.niu@...iatek.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        Fabien Parent <fparent@...libre.com>,
        Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>
Subject: [PATCH v4, 3/3] mailbox: cmdq: add mt8192 support

add mt8192 support

Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
---
 drivers/mailbox/mtk-cmdq-mailbox.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index e0d9a86..8da700a 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
@@ -77,11 +79,13 @@ 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)
@@ -122,6 +126,8 @@ 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);
@@ -598,6 +604,7 @@ 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);
@@ -663,11 +670,14 @@ static int cmdq_probe(struct platform_device *pdev)
 static const struct gce_plat gce_plat_v2 = {.thread_nr = 16};
 static const struct gce_plat gce_plat_v3 = {.thread_nr = 24};
 static const struct gce_plat gce_plat_v4 = {.thread_nr = 24, .shift = 3};
+static const struct gce_plat gce_plat_v5 = {.thread_nr = 24, .shift = 3,
+					    .control_by_sw = true};
 
 static const struct of_device_id cmdq_of_ids[] = {
 	{.compatible = "mediatek,mt8173-gce", .data = (void *)&gce_plat_v2},
 	{.compatible = "mediatek,mt8183-gce", .data = (void *)&gce_plat_v3},
 	{.compatible = "mediatek,mt6779-gce", .data = (void *)&gce_plat_v4},
+	{.compatible = "mediatek,mt8192-gce", .data = (void *)&gce_plat_v5},
 	{}
 };
 
-- 
1.8.1.1.dirty