linux-kernel - [PATCH v3 2/5] drm/mediatek: Use cmdq_pkt_create() and cmdq_pkt

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Message-Id: <20240810090918.7457-3-chunkuang.hu@kernel.org>
Date: Sat, 10 Aug 2024 09:09:15 +0000
From: Chun-Kuang Hu <chunkuang.hu@...nel.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Moudy Ho <moudy.ho@...iatek.com>,
	"Jason-JH . Lin" <jason-jh.lin@...iatek.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>
Subject: [PATCH v3 2/5] drm/mediatek: Use cmdq_pkt_create() and cmdq_pkt_destroy()

Use cmdq_pkt_create() and cmdq_pkt_destroy() common function
instead of implementing drm version.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
---
 drivers/gpu/drm/mediatek/mtk_crtc.c | 46 +++--------------------------
 1 file changed, 4 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c
index a1976c3ae001..5413c0c3dfe8 100644
--- a/drivers/gpu/drm/mediatek/mtk_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_crtc.c
@@ -113,44 +113,6 @@ static void mtk_drm_finish_page_flip(struct mtk_crtc *mtk_crtc)
 	}
 }
 
-#if IS_REACHABLE(CONFIG_MTK_CMDQ)
-static int mtk_drm_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt,
-				   size_t size)
-{
-	struct device *dev;
-	dma_addr_t dma_addr;
-
-	pkt->va_base = kzalloc(size, GFP_KERNEL);
-	if (!pkt->va_base)
-		return -ENOMEM;
-
-	pkt->buf_size = size;
-	pkt->cl = (void *)client;
-
-	dev = client->chan->mbox->dev;
-	dma_addr = dma_map_single(dev, pkt->va_base, pkt->buf_size,
-				  DMA_TO_DEVICE);
-	if (dma_mapping_error(dev, dma_addr)) {
-		dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
-		kfree(pkt->va_base);
-		return -ENOMEM;
-	}
-
-	pkt->pa_base = dma_addr;
-
-	return 0;
-}
-
-static void mtk_drm_cmdq_pkt_destroy(struct cmdq_pkt *pkt)
-{
-	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
-
-	dma_unmap_single(client->chan->mbox->dev, pkt->pa_base, pkt->buf_size,
-			 DMA_TO_DEVICE);
-	kfree(pkt->va_base);
-}
-#endif
-
 static void mtk_crtc_destroy(struct drm_crtc *crtc)
 {
 	struct mtk_crtc *mtk_crtc = to_mtk_crtc(crtc);
@@ -158,7 +120,7 @@ static void mtk_crtc_destroy(struct drm_crtc *crtc)
 
 	mtk_mutex_put(mtk_crtc->mutex);
 #if IS_REACHABLE(CONFIG_MTK_CMDQ)
-	mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+	cmdq_pkt_destroy(&mtk_crtc->cmdq_client, &mtk_crtc->cmdq_handle);
 
 	if (mtk_crtc->cmdq_client.chan) {
 		mbox_free_channel(mtk_crtc->cmdq_client.chan);
@@ -1094,9 +1056,9 @@ int mtk_crtc_create(struct drm_device *drm_dev, const unsigned int *path,
 			mbox_free_channel(mtk_crtc->cmdq_client.chan);
 			mtk_crtc->cmdq_client.chan = NULL;
 		} else {
-			ret = mtk_drm_cmdq_pkt_create(&mtk_crtc->cmdq_client,
-						      &mtk_crtc->cmdq_handle,
-						      PAGE_SIZE);
+			ret = cmdq_pkt_create(&mtk_crtc->cmdq_client,
+					      &mtk_crtc->cmdq_handle,
+					      PAGE_SIZE);
 			if (ret) {
 				dev_dbg(dev, "mtk_crtc %d failed to create cmdq packet\n",
 					drm_crtc_index(&mtk_crtc->base));
-- 
2.34.1