linux-kernel - [PATCH v3, 10/15] media: mtk-vcodec: Add new interface to lock different hardware

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Message-ID: <20210727101051.24418-11-yunfei.dong@mediatek.com>
Date:   Tue, 27 Jul 2021 18:10:46 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Alexandre Courbot <acourbot@...omium.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Tzung-Bi Shih <tzungbi@...omium.org>,
        Tiffany Lin <tiffany.lin@...iatek.com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tomasz Figa <tfiga@...gle.com>
CC:     Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Irui Wang <irui.wang@...iatek.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v3, 10/15] media: mtk-vcodec: Add new interface to lock different hardware

For add new hardware, not only need to lock lat hardware, also
need to lock core hardware in case of different instance start
to decoder at the same time.

Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
v3: no changes
---
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c     | 4 ++--
 drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 5 +++--
 drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h     | 2 +-
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
index 2b334a8a81c6..130ecef2e766 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
@@ -105,12 +105,12 @@ static int vidioc_decoder_cmd(struct file *file, void *priv,
 
 void mtk_vdec_unlock(struct mtk_vcodec_ctx *ctx)
 {
-	mutex_unlock(&ctx->dev->dec_mutex);
+	mutex_unlock(&ctx->dev->dec_mutex[ctx->hw_id]);
 }
 
 void mtk_vdec_lock(struct mtk_vcodec_ctx *ctx)
 {
-	mutex_lock(&ctx->dev->dec_mutex);
+	mutex_lock(&ctx->dev->dec_mutex[ctx->hw_id]);
 }
 
 void mtk_vcodec_dec_release(struct mtk_vcodec_ctx *ctx)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index 7d4c3afcd301..6075d1ae2917 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -382,7 +382,7 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 	phandle rproc_phandle;
 	enum mtk_vcodec_fw_type fw_type;
 	struct device_node *comp_node;
-	int ret;
+	int i, ret;
 
 	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
 	if (!dev)
@@ -422,7 +422,8 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
 		goto err_res;
 	}
 
-	mutex_init(&dev->dec_mutex);
+	for (i = 0; i < MTK_VDEC_HW_MAX; i++)
+		mutex_init(&dev->dec_mutex[i]);
 	mutex_init(&dev->dev_mutex);
 	spin_lock_init(&dev->irqlock);
 
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index a34514597a10..95b21f0d5892 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -501,7 +501,7 @@ struct mtk_vcodec_dev {
 	int dec_irq;
 	int enc_irq;
 
-	struct mutex dec_mutex;
+	struct mutex dec_mutex[MTK_VDEC_HW_MAX];
 	struct mutex enc_mutex;
 
 	struct mtk_vcodec_pm pm;
-- 
2.25.1