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drm/mediatek: Add cmdq_handle in mtk_crtc 

One mtk_crtc need just one cmdq_handle, so add one cmdq_handle
in mtk_crtc to prevent frequently allocation and free of
cmdq_handle.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
This commit is contained in:
Chun-Kuang Hu 2021-07-04 16:27:01 +08:00
parent 8cdcb36534
commit bc9241be73
1 changed files with 18 additions and 10 deletions
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28
drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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@ -54,6 +54,7 @@ struct mtk_drm_crtc {
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct mbox_client cmdq_cl;
struct mbox_chan *cmdq_chan;
struct cmdq_pkt cmdq_handle;
u32 cmdq_event;
u32 cmdq_vblank_cnt;
#endif
@ -226,19 +227,16 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static struct cmdq_pkt *mtk_drm_cmdq_pkt_create(struct mbox_chan *chan, size_t size)
static int mtk_drm_cmdq_pkt_create(struct mbox_chan *chan, struct cmdq_pkt *pkt,
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);
return -ENOMEM;
}
pkt->buf_size = size;
@ -249,12 +247,12 @@ static struct cmdq_pkt *mtk_drm_cmdq_pkt_create(struct mbox_chan *chan, size_t s
dev_err(dev, "dma map failed, size=%u\n", (u32)(u64)size);
kfree(pkt->va_base);
kfree(pkt);
return ERR_PTR(-ENOMEM);
return -ENOMEM;
}
pkt->pa_base = dma_addr;
return pkt;
return 0;
}
static void mtk_drm_cmdq_pkt_destroy(struct mbox_chan *chan, struct cmdq_pkt *pkt)
@ -477,7 +475,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
bool needs_vblank)
{
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
struct cmdq_pkt *cmdq_handle;
struct cmdq_pkt *cmdq_handle = &mtk_crtc->cmdq_handle;
#endif
struct drm_crtc *crtc = &mtk_crtc->base;
struct mtk_drm_private *priv = crtc->dev->dev_private;
@ -517,7 +515,7 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
if (mtk_crtc->cmdq_chan) {
mbox_flush(mtk_crtc->cmdq_chan, 2000);
cmdq_handle = mtk_drm_cmdq_pkt_create(mtk_crtc->cmdq_chan, PAGE_SIZE);
cmdq_handle->cmd_buf_size = 0;
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event, false);
mtk_crtc_ddp_config(crtc, cmdq_handle);
@ -915,6 +913,16 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
drm_crtc_index(&mtk_crtc->base));
mbox_free_channel(mtk_crtc->cmdq_chan);
mtk_crtc->cmdq_chan = NULL;
} else {
ret = mtk_drm_cmdq_pkt_create(mtk_crtc->cmdq_chan,
&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));
mbox_free_channel(mtk_crtc->cmdq_chan);
mtk_crtc->cmdq_chan = NULL;
}
}
}
#endif