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Message-Id: <20230219233439.3157-1-chunkuang.hu@kernel.org>
Date: Sun, 19 Feb 2023 23:34:39 +0000
From: Chun-Kuang Hu <chunkuang.hu@...nel.org>
To: Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>
Subject: [PATCH] soc: mediatek: cmdq: Remove unused helper funciton
cmdq_pkt_create(), cmdq_pkt_destroy(), and cmdq_pkt_flush_async()
are not used by all client drivers (MediaTek drm driver and
MediaTek mdp3 driver), so remove them.
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
---
drivers/soc/mediatek/mtk-cmdq-helper.c | 59 --------------------------
include/linux/soc/mediatek/mtk-cmdq.h | 28 ------------
2 files changed, 87 deletions(-)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index c1837a468267..d4ab39236c79 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -104,50 +104,6 @@ void cmdq_mbox_destroy(struct cmdq_client *client)
}
EXPORT_SYMBOL(cmdq_mbox_destroy);
-struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size)
-{
- struct cmdq_pkt *pkt;
- struct device *dev;
- dma_addr_t dma_addr;
-
- pkt = kzalloc(sizeof(*pkt), GFP_KERNEL);
- if (!pkt)
- return ERR_PTR(-ENOMEM);
- pkt->va_base = kzalloc(size, GFP_KERNEL);
- if (!pkt->va_base) {
- kfree(pkt);
- return ERR_PTR(-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);
- kfree(pkt);
- return ERR_PTR(-ENOMEM);
- }
-
- pkt->pa_base = dma_addr;
-
- return pkt;
-}
-EXPORT_SYMBOL(cmdq_pkt_create);
-
-void 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);
- kfree(pkt);
-}
-EXPORT_SYMBOL(cmdq_pkt_destroy);
-
static int cmdq_pkt_append_command(struct cmdq_pkt *pkt,
struct cmdq_instruction inst)
{
@@ -425,19 +381,4 @@ int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
}
EXPORT_SYMBOL(cmdq_pkt_finalize);
-int cmdq_pkt_flush_async(struct cmdq_pkt *pkt)
-{
- int err;
- struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
-
- err = mbox_send_message(client->chan, pkt);
- if (err < 0)
- return err;
- /* We can send next packet immediately, so just call txdone. */
- mbox_client_txdone(client->chan, 0);
-
- return 0;
-}
-EXPORT_SYMBOL(cmdq_pkt_flush_async);
-
MODULE_LICENSE("GPL v2");
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 2b498f4f3946..60e4c0ca52a1 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -57,21 +57,6 @@ struct cmdq_client *cmdq_mbox_create(struct device *dev, int index);
*/
void cmdq_mbox_destroy(struct cmdq_client *client);
-/**
- * cmdq_pkt_create() - create a CMDQ packet
- * @client: the CMDQ mailbox client
- * @size: required CMDQ buffer size
- *
- * Return: CMDQ packet pointer
- */
-struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size);
-
-/**
- * cmdq_pkt_destroy() - destroy the CMDQ packet
- * @pkt: the CMDQ packet
- */
-void cmdq_pkt_destroy(struct cmdq_pkt *pkt);
-
/**
* cmdq_pkt_write() - append write command to the CMDQ packet
* @pkt: the CMDQ packet
@@ -264,17 +249,4 @@ int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
*/
int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
-/**
- * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
- * packet and call back at the end of done packet
- * @pkt: the CMDQ packet
- *
- * Return: 0 for success; else the error code is returned
- *
- * Trigger CMDQ to asynchronously execute the CMDQ packet and call back
- * at the end of done packet. Note that this is an ASYNC function. When the
- * function returned, it may or may not be finished.
- */
-int cmdq_pkt_flush_async(struct cmdq_pkt *pkt);
-
#endif /* __MTK_CMDQ_H__ */
--
2.34.1
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