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Date: Wed, 10 Jun 2020 14:20:20 +0800
From: Tiffany Lin <tiffany.lin@...iatek.com>
To: CK Hu <ck.hu@...iatek.com>
CC: Yong Wu <yong.wu@...iatek.com>,
Maoguang Meng <Maoguang.Meng@...iatek.com>,
Matthias Brugger <matthias.bgg@...il.com>,
Joerg Roedel <joro@...tes.org>,
Rob Herring <robh+dt@...nel.org>, <youlin.pei@...iatek.com>,
<devicetree@...r.kernel.org>,
Nicolas Boichat <drinkcat@...omium.org>,
<cui.zhang@...iatek.com>, <eizan@...omium.org>,
<srv_heupstream@...iatek.com>, <chao.hao@...iatek.com>,
Will Deacon <will.deacon@....com>,
<linux-kernel@...r.kernel.org>, Evan Green <evgreen@...omium.org>,
Tomasz Figa <tfiga@...gle.com>,
<iommu@...ts.linux-foundation.org>,
Matthias Kaehlcke <mka@...omium.org>,
<linux-mediatek@...ts.infradead.org>, <ming-fan.chen@...iatek.com>,
<anan.sun@...iatek.com>, Robin Murphy <robin.murphy@....com>,
<acourbot@...omium.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 09/17] media: mtk-vcodec: Get rid of
mtk_smi_larb_get/put
On Wed, 2020-06-10 at 13:47 +0800, CK Hu wrote:
> + Tiffany & Maoguang.
>
> On Sat, 2020-05-30 at 16:10 +0800, Yong Wu wrote:
> > MediaTek IOMMU has already added the device_link between the consumer
> > and smi-larb device. If the vcodec device call the pm_runtime_get_sync,
> > the smi-larb's pm_runtime_get_sync also be called automatically.
> >
Acked-by: Tiffany Lin <tiffany.lin@...iatek.com>
> > CC: Tiffany Lin <tiffany.lin@...iatek.com>
> > Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> > Reviewed-by: Evan Green <evgreen@...omium.org>
> > ---
> > .../media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 19 ---------------
> > drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h | 3 ---
> > drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c | 1 -
> > .../media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c | 27 ----------------------
> > 4 files changed, 50 deletions(-)
> >
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > index 36dfe3f..1d7d14d 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
> > @@ -8,14 +8,12 @@
> > #include <linux/of_address.h>
> > #include <linux/of_platform.h>
> > #include <linux/pm_runtime.h>
> > -#include <soc/mediatek/smi.h>
> >
> > #include "mtk_vcodec_dec_pm.h"
> > #include "mtk_vcodec_util.h"
> >
> > int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
> > {
> > - struct device_node *node;
> > struct platform_device *pdev;
> > struct mtk_vcodec_pm *pm;
> > struct mtk_vcodec_clk *dec_clk;
> > @@ -26,18 +24,7 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
> > pm = &mtkdev->pm;
> > pm->mtkdev = mtkdev;
> > dec_clk = &pm->vdec_clk;
> > - node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
> > - if (!node) {
> > - mtk_v4l2_err("of_parse_phandle mediatek,larb fail!");
> > - return -1;
> > - }
> >
> > - pdev = of_find_device_by_node(node);
> > - of_node_put(node);
> > - if (WARN_ON(!pdev)) {
> > - return -1;
> > - }
> > - pm->larbvdec = &pdev->dev;
> > pdev = mtkdev->plat_dev;
> > pm->dev = &pdev->dev;
> >
> > @@ -113,11 +100,6 @@ void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
> > }
> > }
> >
> > - ret = mtk_smi_larb_get(pm->larbvdec);
> > - if (ret) {
> > - mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
> > - goto error;
> > - }
> > return;
> >
> > error:
> > @@ -130,7 +112,6 @@ void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
> > struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
> > int i = 0;
> >
> > - mtk_smi_larb_put(pm->larbvdec);
> > for (i = dec_clk->clk_num - 1; i >= 0; i--)
> > clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
> > }
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > index 52d1ce1..7d3966a 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> > @@ -190,10 +190,7 @@ struct mtk_vcodec_clk {
> > */
> > struct mtk_vcodec_pm {
> > struct mtk_vcodec_clk vdec_clk;
> > - struct device *larbvdec;
> > -
> > struct mtk_vcodec_clk venc_clk;
> > - struct device *larbvenc;
> > struct device *dev;
> > struct mtk_vcodec_dev *mtkdev;
> > };
> > diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> > index 5301dca..18025f7 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c
> > @@ -8,7 +8,6 @@
> > #include <media/v4l2-event.h>
> > #include <media/v4l2-mem2mem.h>
> > #include <media/videobuf2-dma-contig.h>
> > -#include <soc/mediatek/smi.h>
> > #include <linux/pm_runtime.h>
> >
> > #include "mtk_vcodec_drv.h"
> > 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 01c6a55..047919e 100644
> > --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
> > @@ -8,44 +8,25 @@
> > #include <linux/of_address.h>
> > #include <linux/of_platform.h>
> > #include <linux/pm_runtime.h>
> > -#include <soc/mediatek/smi.h>
> >
> > #include "mtk_vcodec_enc_pm.h"
> > #include "mtk_vcodec_util.h"
> >
> > int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
> > {
> > - struct device_node *node;
> > struct platform_device *pdev;
> > struct mtk_vcodec_pm *pm;
> > struct mtk_vcodec_clk *enc_clk;
> > struct mtk_vcodec_clk_info *clk_info;
> > int ret = 0, i = 0;
> > - struct device *dev;
> >
> > pdev = mtkdev->plat_dev;
> > pm = &mtkdev->pm;
> > memset(pm, 0, sizeof(struct mtk_vcodec_pm));
> > pm->mtkdev = mtkdev;
> > pm->dev = &pdev->dev;
> > - dev = &pdev->dev;
> > enc_clk = &pm->venc_clk;
> >
> > - node = of_parse_phandle(dev->of_node, "mediatek,larb", 0);
> > - if (!node) {
> > - mtk_v4l2_err("no mediatek,larb found");
> > - return -ENODEV;
> > - }
> > - pdev = of_find_device_by_node(node);
> > - of_node_put(node);
> > - if (!pdev) {
> > - mtk_v4l2_err("no mediatek,larb device found");
> > - return -ENODEV;
> > - }
> > - pm->larbvenc = &pdev->dev;
> > - pdev = mtkdev->plat_dev;
> > - pm->dev = &pdev->dev;
> > -
> > enc_clk->clk_num = of_property_count_strings(pdev->dev.of_node,
> > "clock-names");
> > if (enc_clk->clk_num > 0) {
> > @@ -93,13 +74,6 @@ void mtk_vcodec_enc_clock_on(struct mtk_vcodec_pm *pm)
> > }
> > }
> >
> > - ret = mtk_smi_larb_get(pm->larbvenc);
> > - if (ret) {
> > - mtk_v4l2_err("mtk_smi_larb_get larb3 fail %d", ret);
> > - goto clkerr;
> > - }
> > - return;
> > -
> > clkerr:
> > for (i -= 1; i >= 0; i--)
> > clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
> > @@ -110,7 +84,6 @@ void mtk_vcodec_enc_clock_off(struct mtk_vcodec_pm *pm)
> > struct mtk_vcodec_clk *enc_clk = &pm->venc_clk;
> > int i = 0;
> >
> > - mtk_smi_larb_put(pm->larbvenc);
> > for (i = enc_clk->clk_num - 1; i >= 0; i--)
> > clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
> > }
>
>
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