From: Yong Wu <yong.wu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
David Airlie <airlied@linux.ie>,
Philipp Zabel <p.zabel@pengutronix.de>,
Hans Verkuil <hans.verkuil@cisco.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>,
Tiffany Lin <tiffany.lin@mediatek.com>,
Honghui Zhang <honghui.zhang@mediatek.com>,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
YT Shen <yt.shen@mediatek.com>, CK Hu <ck.hu@mediatek.com>,
Daniel Kurtz <djkurtz@google.com>, Tomasz Figa <tfiga@google.com>,
Arnd Bergmann <arnd@arndb.de>,
Lucas Stach <l.stach@pengutronix.de>, <youlin.pei@mediatek.com>,
<linux-mediatek@lists.infradead.org>,
<srv_heupstream@mediatek.com>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<iommu@lists.linux-foundation.org>,
Yong Wu <yong.wu@mediatek.com>
Subject: [PATCH 3/3] vcodec: mediatek: Add probe-defer for MTK IOMMU and SMI
Date: Wed, 20 Jul 2016 11:02:01 +0800 [thread overview]
Message-ID: <1468983721-3627-3-git-send-email-yong.wu@mediatek.com> (raw)
In-Reply-To: <1468983721-3627-1-git-send-email-yong.wu@mediatek.com>
Mediatek V4l2 depend on the IOMMU and SMI. we should add probe-defer
to wait for the IOMMU and SMI is ready.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
index 4c977b2..9e6203e 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
@@ -66,6 +66,11 @@ int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
pdev = mtkdev->plat_dev;
pm->dev = &pdev->dev;
+ /* Wait until MTK IOMMU and SMI probe done.*/
+ if (!mtk_smi_larb_is_ready(pm->larbvenc) ||
+ !mtk_smi_larb_is_ready(pm->larbvenclt))
+ return -EPROBE_DEFER;
+
pm->vencpll_d2 = devm_clk_get(&pdev->dev, "venc_sel_src");
if (IS_ERR(pm->vencpll_d2)) {
mtk_v4l2_err("devm_clk_get vencpll_d2 fail");
--
1.8.1.1.dirty
next prev parent reply other threads:[~2016-07-20 3:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-20 3:01 [PATCH 1/3] memory: mediatek: Add a new interface mtk_smi_larb_is_ready Yong Wu
2016-07-20 3:02 ` [PATCH 2/3] drm/mediatek: Add probe-defer for MTK IOMMU and SMI Yong Wu
2016-07-20 3:02 ` Yong Wu [this message]
2016-07-25 8:39 ` [PATCH 1/3] memory: mediatek: Add a new interface mtk_smi_larb_is_ready Matthias Brugger
2016-07-26 1:31 ` Yong Wu
2016-07-26 2:30 ` Tomasz Figa
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