linux-kernel - [PATCH v2 23/25] drm/mediatek: add vmap support for mediatek drm

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Date:   Wed, 27 Mar 2019 14:19:19 +0800
From:   <yongqiang.niu@...iatek.com>
To:     <ck.hu@...iatek.com>, <p.zabel@...gutronix.de>,
        <robh+dt@...nel.org>, <matthias.bgg@...il.com>
CC:     <airlied@...ux.ie>, <mark.rutland@....com>,
        <dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <Bibby.Hsieh@...iatek.com>,
        <yt.shen@...iatek.com>, Yongqiang Niu <yongqiang.niu@...iatek.com>
Subject: [PATCH v2 23/25] drm/mediatek: add vmap support for mediatek drm

From: Yongqiang Niu <yongqiang.niu@...iatek.com>

This patch add add vmap support for mediatek drm

Signed-off-by: Yongqiang Niu <yongqiang.niu@...iatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
 drivers/gpu/drm/mediatek/mtk_drm_gem.c | 7 +++++++
 drivers/gpu/drm/mediatek/mtk_drm_gem.h | 1 +
 3 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 84c6626..942789d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -370,6 +370,7 @@ static void mtk_drm_kms_deinit(struct drm_device *drm)
 	.gem_prime_get_sg_table = mtk_gem_prime_get_sg_table,
 	.gem_prime_import_sg_table = mtk_gem_prime_import_sg_table,
 	.gem_prime_mmap = mtk_drm_gem_mmap_buf,
+	.gem_prime_vmap = mtk_drm_gem_vmap_buf,
 	.fops = &mtk_drm_fops,
 
 	.name = DRIVER_NAME,
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
index 259b7b0..c230237 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c
@@ -165,6 +165,13 @@ int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj, struct vm_area_struct *vma)
 	return mtk_drm_gem_object_mmap(obj, vma);
 }
 
+void *mtk_drm_gem_vmap_buf(struct drm_gem_object *obj)
+{
+	struct mtk_drm_gem_obj *mtk_gem = to_mtk_gem_obj(obj);
+
+	return mtk_gem->cookie;
+}
+
 int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
 {
 	struct drm_gem_object *obj;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.h b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
index 534639b..3c48af9 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_gem.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.h
@@ -49,6 +49,7 @@ int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj,
 			 struct vm_area_struct *vma);
+void *mtk_drm_gem_vmap_buf(struct drm_gem_object *obj);
 struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj);
 struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev,
 			struct dma_buf_attachment *attach, struct sg_table *sg);
-- 
1.8.1.1.dirty