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Subject[PATCH 3/4] mailbox / soc / drm: mediatek: Remove struct cmdq_client
Date
In mailbox rx_callback, it pass struct mbox_client to callback
function, but it could not map back to client instance because
struct cmdq_client use a pointer to struct mbox_client:

struct cmdq_client {
struct mbox_client client;
struct mbox_chan *chan;
};

struct client_instance {
/* client instance data */
struct cmdq_client *cmdq_client;
};

so remove struct cmdq_client and let client instance define
mbox_client as:

struct client_instance {
/* client instance data */
struct mbox_client cl;
};

and in rx_callback function, use struct mbox_client to get
struct client_instance.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 35 ++++++++--------
drivers/soc/mediatek/mtk-cmdq-helper.c | 52 ++++--------------------
include/linux/mailbox/mtk-cmdq-mailbox.h | 1 -
include/linux/soc/mediatek/mtk-cmdq.h | 30 +++-----------
4 files changed, 32 insertions(+), 86 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 5df2d431418d..f99c9d2032b8 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -49,7 +49,8 @@ struct mtk_drm_crtc {
bool pending_async_planes;

#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_client *cmdq_client;
+ struct mbox_client cmdq_cl;
+ struct mbox_chan *cmdq_chan;
u32 cmdq_event;
#endif

@@ -240,9 +241,10 @@ struct mtk_ddp_comp *mtk_drm_ddp_comp_for_plane(struct drm_crtc *crtc,
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
+ struct mtk_drm_crtc *mtk_crtc = container_of(cl, struct mtk_drm_crtc, cmdq_cl);
struct cmdq_cb_data *data = mssg;

- cmdq_pkt_destroy(data->pkt);
+ cmdq_pkt_destroy(mtk_crtc->cmdq_chan, data->pkt);
}
#endif

@@ -481,18 +483,18 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
mtk_disp_mutex_release(mtk_crtc->mutex);
}
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (mtk_crtc->cmdq_client) {
- mbox_flush(mtk_crtc->cmdq_client->chan, 2000);
- cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_client, PAGE_SIZE);
+ if (mtk_crtc->cmdq_chan) {
+ mbox_flush(mtk_crtc->cmdq_chan, 2000);
+ cmdq_handle = cmdq_pkt_create(mtk_crtc->cmdq_chan, PAGE_SIZE);
cmdq_pkt_clear_event(cmdq_handle, mtk_crtc->cmdq_event);
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ dma_sync_single_for_device(mtk_crtc->cmdq_chan->mbox->dev,
cmdq_handle->pa_base,
cmdq_handle->cmd_buf_size,
DMA_TO_DEVICE);
- cmdq_pkt_flush_async(cmdq_handle);
+ cmdq_pkt_flush_async(mtk_crtc->cmdq_chan, cmdq_handle);
}
#endif
mutex_unlock(&mtk_crtc->hw_lock);
@@ -671,7 +673,7 @@ void mtk_crtc_ddp_irq(struct drm_crtc *crtc, struct mtk_ddp_comp *comp)
struct mtk_drm_private *priv = crtc->dev->dev_private;

#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- if (!priv->data->shadow_register && !mtk_crtc->cmdq_client)
+ if (!priv->data->shadow_register && !mtk_crtc->cmdq_chan)
#else
if (!priv->data->shadow_register)
#endif
@@ -830,14 +832,18 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
mutex_init(&mtk_crtc->hw_lock);

#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- mtk_crtc->cmdq_client =
- cmdq_mbox_create(mtk_crtc->mmsys_dev,
- drm_crtc_index(&mtk_crtc->base));
- if (IS_ERR(mtk_crtc->cmdq_client)) {
+ mtk_crtc->cmdq_cl.dev = mtk_crtc->mmsys_dev;
+ mtk_crtc->cmdq_cl.tx_block = false;
+ mtk_crtc->cmdq_cl.knows_txdone = true;
+ mtk_crtc->cmdq_cl.rx_callback = ddp_cmdq_cb;
+ mtk_crtc->cmdq_chan = mbox_request_channel(&mtk_crtc->cmdq_cl,
+ drm_crtc_index(&mtk_crtc->base));
+ if (IS_ERR(mtk_crtc->cmdq_chan)) {
dev_dbg(dev, "mtk_crtc %d failed to create mailbox client, writing register by CPU now\n",
drm_crtc_index(&mtk_crtc->base));
- mtk_crtc->cmdq_client = NULL;
+ mtk_crtc->cmdq_chan = NULL;
}
+
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
@@ -845,9 +851,6 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev,
if (ret)
dev_dbg(dev, "mtk_crtc %d failed to get mediatek,gce-events property\n",
drm_crtc_index(&mtk_crtc->base));
-
- if (mtk_crtc->cmdq_client)
- mtk_crtc->cmdq_client->client.rx_callback = ddp_cmdq_cb;
#endif
return 0;
}
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index b6ee1b525084..f5822adb79a8 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -65,41 +65,7 @@ int cmdq_dev_get_client_reg(struct device *dev,
}
EXPORT_SYMBOL(cmdq_dev_get_client_reg);

-struct cmdq_client *cmdq_mbox_create(struct device *dev, int index)
-{
- struct cmdq_client *client;
-
- client = kzalloc(sizeof(*client), GFP_KERNEL);
- if (!client)
- return (struct cmdq_client *)-ENOMEM;
-
- client->client.dev = dev;
- client->client.tx_block = false;
- client->client.knows_txdone = true;
- client->chan = mbox_request_channel(&client->client, index);
-
- if (IS_ERR(client->chan)) {
- long err;
-
- dev_err(dev, "failed to request channel\n");
- err = PTR_ERR(client->chan);
- kfree(client);
-
- return ERR_PTR(err);
- }
-
- return client;
-}
-EXPORT_SYMBOL(cmdq_mbox_create);
-
-void cmdq_mbox_destroy(struct cmdq_client *client)
-{
- mbox_free_channel(client->chan);
- kfree(client);
-}
-EXPORT_SYMBOL(cmdq_mbox_destroy);
-
-struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size)
+struct cmdq_pkt *cmdq_pkt_create(struct mbox_chan *chan, size_t size)
{
struct cmdq_pkt *pkt;
struct device *dev;
@@ -114,9 +80,8 @@ struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size)
return ERR_PTR(-ENOMEM);
}
pkt->buf_size = size;
- pkt->cl = (void *)client;

- dev = client->chan->mbox->dev;
+ dev = 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)) {
@@ -132,11 +97,9 @@ struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size)
}
EXPORT_SYMBOL(cmdq_pkt_create);

-void cmdq_pkt_destroy(struct cmdq_pkt *pkt)
+void cmdq_pkt_destroy(struct mbox_chan *chan, 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_unmap_single(chan->mbox->dev, pkt->pa_base, pkt->buf_size,
DMA_TO_DEVICE);
kfree(pkt->va_base);
kfree(pkt);
@@ -318,16 +281,15 @@ int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
}
EXPORT_SYMBOL(cmdq_pkt_finalize);

-int cmdq_pkt_flush_async(struct cmdq_pkt *pkt)
+int cmdq_pkt_flush_async(struct mbox_chan *chan, struct cmdq_pkt *pkt)
{
int err;
- struct cmdq_client *client = (struct cmdq_client *)pkt->cl;

- err = mbox_send_message(client->chan, pkt);
+ err = mbox_send_message(chan, pkt);
if (err < 0)
return err;
/* We can send next packet immediately, so just call txdone. */
- mbox_client_txdone(client->chan, 0);
+ mbox_client_txdone(chan, 0);

return 0;
}
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index 2cec4dbaa214..ce2eaf7eaf34 100644
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -68,7 +68,6 @@ struct cmdq_pkt {
dma_addr_t pa_base;
size_t cmd_buf_size; /* command occupied size */
size_t buf_size; /* real buffer size */
- void *cl;
};

struct cmdq_cb_data {
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index a09b3f39b861..fb35da22e00c 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -19,11 +19,6 @@ struct cmdq_client_reg {
u16 size;
};

-struct cmdq_client {
- struct mbox_client client;
- struct mbox_chan *chan;
-};
-
/**
* cmdq_dev_get_client_reg() - parse cmdq client reg from the device
* node of CMDQ client
@@ -39,35 +34,21 @@ struct cmdq_client {
int cmdq_dev_get_client_reg(struct device *dev,
struct cmdq_client_reg *client_reg, int idx);

-/**
- * cmdq_mbox_create() - create CMDQ mailbox client and channel
- * @dev: device of CMDQ mailbox client
- * @index: index of CMDQ mailbox channel
- *
- * Return: CMDQ mailbox client pointer
- */
-struct cmdq_client *cmdq_mbox_create(struct device *dev, int index);
-
-/**
- * cmdq_mbox_destroy() - destroy CMDQ mailbox client and channel
- * @client: the CMDQ mailbox client
- */
-void cmdq_mbox_destroy(struct cmdq_client *client);
-
/**
* cmdq_pkt_create() - create a CMDQ packet
- * @client: the CMDQ mailbox client
+ * @chan: the mailbox channel
* @size: required CMDQ buffer size
*
* Return: CMDQ packet pointer
*/
-struct cmdq_pkt *cmdq_pkt_create(struct cmdq_client *client, size_t size);
+struct cmdq_pkt *cmdq_pkt_create(struct mbox_chan *chan, size_t size);

/**
* cmdq_pkt_destroy() - destroy the CMDQ packet
+ * @chan: the mailbox channel
* @pkt: the CMDQ packet
*/
-void cmdq_pkt_destroy(struct cmdq_pkt *pkt);
+void cmdq_pkt_destroy(struct mbox_chan *chan, struct cmdq_pkt *pkt);

/**
* cmdq_pkt_write() - append write command to the CMDQ packet
@@ -177,6 +158,7 @@ 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
+ * @chan: the mailbox channel
* @pkt: the CMDQ packet
*
* Return: 0 for success; else the error code is returned
@@ -185,6 +167,6 @@ int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
* 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);
+int cmdq_pkt_flush_async(struct mbox_chan *chan, struct cmdq_pkt *pkt);

#endif /* __MTK_CMDQ_H__ */
--
2.17.1
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