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.

CC: Tiffany Lin <tiffany....@mediatek.com>
Signed-off-by: Yong Wu <yong...@mediatek.com>
Reviewed-by: Evan Green <evgr...@chromium.org>
---
 .../media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c  | 22 ----------
 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  | 47 ----------------------
 4 files changed, 73 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 5a6ec8f..eb82d87 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c
@@ -8,7 +8,6 @@
 #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"
@@ -16,7 +15,6 @@
 
 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;
@@ -27,19 +25,6 @@ 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;
 
        dec_clk->clk_num =
@@ -113,12 +98,6 @@ void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
                        goto error;
                }
        }
-
-       ret = mtk_smi_larb_get(pm->larbvdec);
-       if (ret) {
-               mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
-               goto error;
-       }
        return;
 
 error:
@@ -131,7 +110,6 @@ 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 c95de5d..61fefa1 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -188,11 +188,8 @@ 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   *larbvenclt;
        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 fd8de02..75e0e85 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 "mtk_vcodec_drv.h"
 #include "mtk_vcodec_enc.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 3e2bfde..f484ac7 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c
@@ -8,7 +8,6 @@
 #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"
@@ -17,49 +16,18 @@
 
 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;
-
-       node = of_parse_phandle(dev->of_node, "mediatek,larb", 1);
-       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->larbvenclt = &pdev->dev;
        pdev = mtkdev->plat_dev;
        pm->dev = &pdev->dev;
 
@@ -115,21 +83,8 @@ 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 larbvencerr;
-       }
-       ret = mtk_smi_larb_get(pm->larbvenclt);
-       if (ret) {
-               mtk_v4l2_err("mtk_smi_larb_get larb4 fail %d", ret);
-               goto larbvenclterr;
-       }
        return;
 
-larbvenclterr:
-       mtk_smi_larb_put(pm->larbvenc);
-larbvencerr:
 clkerr:
        for (i -= 1; i >= 0; i--)
                clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
@@ -140,8 +95,6 @@ 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);
-       mtk_smi_larb_put(pm->larbvenclt);
        for (i = enc_clk->clk_num - 1; i >= 0; i--)
                clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
 }
-- 
1.9.1

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