linux-kernel - [PATCH v3 06/14] media: mtk-mdp: Get rid of mtk_smi_larb

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Message-ID: <1567503456-24725-7-git-send-email-yong.wu@mediatek.com>
Date:   Tue, 3 Sep 2019 17:37:28 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Evan Green <evgreen@...omium.org>,
        Robin Murphy <robin.murphy@....com>,
        Tomasz Figa <tfiga@...gle.com>,
        Will Deacon <will.deacon@....com>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <yong.wu@...iatek.com>,
        <youlin.pei@...iatek.com>, Nicolas Boichat <drinkcat@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>, <anan.sun@...iatek.com>,
        <cui.zhang@...iatek.com>, <chao.hao@...iatek.com>,
        <ming-fan.chen@...iatek.com>,
        Minghsiu Tsai <minghsiu.tsai@...iatek.com>
Subject: [PATCH v3 06/14] media: mtk-mdp: Get rid of mtk_smi_larb_get/put

MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the mdp device call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.

CC: Minghsiu Tsai <minghsiu.tsai@...iatek.com>
Signed-off-by: Yong Wu <yong.wu@...iatek.com>
Reviewed-by: Evan Green <evgreen@...omium.org>
---
 drivers/media/platform/mtk-mdp/mtk_mdp_comp.c | 38 ---------------------------
 drivers/media/platform/mtk-mdp/mtk_mdp_comp.h |  2 --
 drivers/media/platform/mtk-mdp/mtk_mdp_core.c |  1 -
 3 files changed, 41 deletions(-)

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
index 9afe816..5985a9b 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.c
@@ -9,7 +9,6 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_platform.h>
-#include <soc/mediatek/smi.h>
 
 #include "mtk_mdp_comp.h"
 
@@ -58,14 +57,6 @@ void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp)
 {
 	int i, err;
 
-	if (comp->larb_dev) {
-		err = mtk_smi_larb_get(comp->larb_dev);
-		if (err)
-			dev_err(dev,
-				"failed to get larb, err %d. type:%d id:%d\n",
-				err, comp->type, comp->id);
-	}
-
 	for (i = 0; i < ARRAY_SIZE(comp->clk); i++) {
 		if (IS_ERR(comp->clk[i]))
 			continue;
@@ -86,16 +77,11 @@ void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp)
 			continue;
 		clk_disable_unprepare(comp->clk[i]);
 	}
-
-	if (comp->larb_dev)
-		mtk_smi_larb_put(comp->larb_dev);
 }
 
 int mtk_mdp_comp_init(struct device *dev, struct device_node *node,
 		      struct mtk_mdp_comp *comp, enum mtk_mdp_comp_id comp_id)
 {
-	struct device_node *larb_node;
-	struct platform_device *larb_pdev;
 	int i;
 
 	if (comp_id < 0 || comp_id >= MTK_MDP_COMP_ID_MAX) {
@@ -116,30 +102,6 @@ int mtk_mdp_comp_init(struct device *dev, struct device_node *node,
 			break;
 	}
 
-	/* Only DMA capable components need the LARB property */
-	comp->larb_dev = NULL;
-	if (comp->type != MTK_MDP_RDMA &&
-	    comp->type != MTK_MDP_WDMA &&
-	    comp->type != MTK_MDP_WROT)
-		return 0;
-
-	larb_node = of_parse_phandle(node, "mediatek,larb", 0);
-	if (!larb_node) {
-		dev_err(dev,
-			"Missing mediadek,larb phandle in %pOF node\n", node);
-		return -EINVAL;
-	}
-
-	larb_pdev = of_find_device_by_node(larb_node);
-	if (!larb_pdev) {
-		dev_warn(dev, "Waiting for larb device %pOF\n", larb_node);
-		of_node_put(larb_node);
-		return -EPROBE_DEFER;
-	}
-	of_node_put(larb_node);
-
-	comp->larb_dev = &larb_pdev->dev;
-
 	return 0;
 }
 
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h
index 998a4b9..a2da8df 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_comp.h
@@ -39,7 +39,6 @@ enum mtk_mdp_comp_id {
  * @dev_node:	component device node
  * @clk:	clocks required for component
  * @regs:	Mapped address of component registers.
- * @larb_dev:	SMI device required for component
  * @type:	component type
  * @id:		component ID
  */
@@ -47,7 +46,6 @@ struct mtk_mdp_comp {
 	struct device_node	*dev_node;
 	struct clk		*clk[2];
 	void __iomem		*regs;
-	struct device		*larb_dev;
 	enum mtk_mdp_comp_type	type;
 	enum mtk_mdp_comp_id	id;
 };
diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
index fc9faec..c237ed9 100644
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_core.c
@@ -17,7 +17,6 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/workqueue.h>
-#include <soc/mediatek/smi.h>
 
 #include "mtk_mdp_core.h"
 #include "mtk_mdp_m2m.h"
-- 
1.9.1