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Subject[PATCH 2/4] mailbox / soc / drm: mediatek: Use mailbox rx_callback instead of cmdq_task_cb
Date
rx_callback is a standard mailbox callback mechanism and could cover the
function of proprietary cmdq_task_cb, so use the standard one instead of
the proprietary one.

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 17 +++++--
drivers/mailbox/mtk-cmdq-mailbox.c | 24 ++++------
drivers/soc/mediatek/mtk-cmdq-helper.c | 57 +-----------------------
include/linux/mailbox/mtk-cmdq-mailbox.h | 24 +++-------
include/linux/soc/mediatek/mtk-cmdq.h | 17 +------
5 files changed, 30 insertions(+), 109 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index cabeb7fea2be..5df2d431418d 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -4,9 +4,11 @@
*/

#include <linux/clk.h>
+#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
+#include <linux/mailbox_controller.h>

#include <asm/barrier.h>
#include <soc/mediatek/smi.h>
@@ -236,9 +238,11 @@ 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 cmdq_cb_data data)
+static void ddp_cmdq_cb(struct mbox_client *cl, void *mssg)
{
- cmdq_pkt_destroy(data.data);
+ struct cmdq_cb_data *data = mssg;
+
+ cmdq_pkt_destroy(data->pkt);
}
#endif

@@ -484,7 +488,11 @@ static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc)
cmdq_pkt_wfe(cmdq_handle, mtk_crtc->cmdq_event);
mtk_crtc_ddp_config(crtc, cmdq_handle);
cmdq_pkt_finalize(cmdq_handle);
- cmdq_pkt_flush_async(cmdq_handle, ddp_cmdq_cb, cmdq_handle);
+ dma_sync_single_for_device(mtk_crtc->cmdq_client->chan->mbox->dev,
+ cmdq_handle->pa_base,
+ cmdq_handle->cmd_buf_size,
+ DMA_TO_DEVICE);
+ cmdq_pkt_flush_async(cmdq_handle);
}
#endif
mutex_unlock(&mtk_crtc->hw_lock);
@@ -837,6 +845,9 @@ 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/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c
index 484d4438cd83..bc11afdebefc 100644
--- a/drivers/mailbox/mtk-cmdq-mailbox.c
+++ b/drivers/mailbox/mtk-cmdq-mailbox.c
@@ -180,15 +180,13 @@ static bool cmdq_thread_is_in_wfe(struct cmdq_thread *thread)
return readl(thread->base + CMDQ_THR_WAIT_TOKEN) & CMDQ_THR_IS_WAITING;
}

-static void cmdq_task_exec_done(struct cmdq_task *task, enum cmdq_cb_status sta)
+static void cmdq_task_exec_done(struct cmdq_task *task, int sta)
{
- struct cmdq_task_cb *cb = &task->pkt->async_cb;
struct cmdq_cb_data data;

- WARN_ON(cb->cb == (cmdq_async_flush_cb)NULL);
data.sta = sta;
- data.data = cb->data;
- cb->cb(data);
+ data.pkt = task->pkt;
+ mbox_chan_received_data(task->thread->chan, &data);

list_del(&task->list_entry);
}
@@ -244,10 +242,10 @@ static void cmdq_thread_irq_handler(struct cmdq *cmdq,
curr_task = task;

if (!curr_task || curr_pa == task_end_pa - CMDQ_INST_SIZE) {
- cmdq_task_exec_done(task, CMDQ_CB_NORMAL);
+ cmdq_task_exec_done(task, 0);
kfree(task);
} else if (err) {
- cmdq_task_exec_done(task, CMDQ_CB_ERROR);
+ cmdq_task_exec_done(task, -ENOEXEC);
cmdq_task_handle_error(curr_task);
kfree(task);
}
@@ -415,7 +413,7 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)

list_for_each_entry_safe(task, tmp, &thread->task_busy_list,
list_entry) {
- cmdq_task_exec_done(task, CMDQ_CB_ERROR);
+ cmdq_task_exec_done(task, -ECONNABORTED);
kfree(task);
}

@@ -434,7 +432,6 @@ static void cmdq_mbox_shutdown(struct mbox_chan *chan)
static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)
{
struct cmdq_thread *thread = (struct cmdq_thread *)chan->con_priv;
- struct cmdq_task_cb *cb;
struct cmdq_cb_data data;
struct cmdq *cmdq = dev_get_drvdata(chan->mbox->dev);
struct cmdq_task *task, *tmp;
@@ -451,12 +448,9 @@ static int cmdq_mbox_flush(struct mbox_chan *chan, unsigned long timeout)

list_for_each_entry_safe(task, tmp, &thread->task_busy_list,
list_entry) {
- cb = &task->pkt->async_cb;
- if (cb->cb) {
- data.sta = CMDQ_CB_ERROR;
- data.data = cb->data;
- cb->cb(data);
- }
+ data.sta = -ECONNABORTED;
+ data.pkt = task->pkt;
+ mbox_chan_received_data(task->thread->chan, &data);
list_del(&task->list_entry);
kfree(task);
}
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 4f311f035b59..b6ee1b525084 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -318,34 +318,11 @@ int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
}
EXPORT_SYMBOL(cmdq_pkt_finalize);

-static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data)
-{
- struct cmdq_pkt *pkt = (struct cmdq_pkt *)data.data;
- struct cmdq_task_cb *cb = &pkt->cb;
- struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
-
- dma_sync_single_for_cpu(client->chan->mbox->dev, pkt->pa_base,
- pkt->cmd_buf_size, DMA_TO_DEVICE);
- if (cb->cb) {
- data.data = cb->data;
- cb->cb(data);
- }
-}
-
-int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
- void *data)
+int cmdq_pkt_flush_async(struct cmdq_pkt *pkt)
{
int err;
struct cmdq_client *client = (struct cmdq_client *)pkt->cl;

- pkt->cb.cb = cb;
- pkt->cb.data = data;
- pkt->async_cb.cb = cmdq_pkt_flush_async_cb;
- pkt->async_cb.data = pkt;
-
- dma_sync_single_for_device(client->chan->mbox->dev, pkt->pa_base,
- pkt->cmd_buf_size, DMA_TO_DEVICE);
-
err = mbox_send_message(client->chan, pkt);
if (err < 0)
return err;
@@ -356,36 +333,4 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
}
EXPORT_SYMBOL(cmdq_pkt_flush_async);

-struct cmdq_flush_completion {
- struct completion cmplt;
- bool err;
-};
-
-static void cmdq_pkt_flush_cb(struct cmdq_cb_data data)
-{
- struct cmdq_flush_completion *cmplt;
-
- cmplt = (struct cmdq_flush_completion *)data.data;
- if (data.sta != CMDQ_CB_NORMAL)
- cmplt->err = true;
- else
- cmplt->err = false;
- complete(&cmplt->cmplt);
-}
-
-int cmdq_pkt_flush(struct cmdq_pkt *pkt)
-{
- struct cmdq_flush_completion cmplt;
- int err;
-
- init_completion(&cmplt.cmplt);
- err = cmdq_pkt_flush_async(pkt, cmdq_pkt_flush_cb, &cmplt);
- if (err < 0)
- return err;
- wait_for_completion(&cmplt.cmplt);
-
- return cmplt.err ? -EFAULT : 0;
-}
-EXPORT_SYMBOL(cmdq_pkt_flush);
-
MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h
index 05eea1aef5aa..2cec4dbaa214 100644
--- a/include/linux/mailbox/mtk-cmdq-mailbox.h
+++ b/include/linux/mailbox/mtk-cmdq-mailbox.h
@@ -63,33 +63,19 @@ enum cmdq_code {
CMDQ_CODE_LOGIC = 0xa0,
};

-enum cmdq_cb_status {
- CMDQ_CB_NORMAL = 0,
- CMDQ_CB_ERROR
-};
-
-struct cmdq_cb_data {
- enum cmdq_cb_status sta;
- void *data;
-};
-
-typedef void (*cmdq_async_flush_cb)(struct cmdq_cb_data data);
-
-struct cmdq_task_cb {
- cmdq_async_flush_cb cb;
- void *data;
-};
-
struct cmdq_pkt {
void *va_base;
dma_addr_t pa_base;
size_t cmd_buf_size; /* command occupied size */
size_t buf_size; /* real buffer size */
- struct cmdq_task_cb cb;
- struct cmdq_task_cb async_cb;
void *cl;
};

+struct cmdq_cb_data {
+ int sta;
+ struct cmdq_pkt *pkt;
+};
+
u8 cmdq_get_shift_pa(struct mbox_chan *chan);

#endif /* __MTK_CMDQ_MAILBOX_H__ */
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 175bd89f46f8..a09b3f39b861 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -178,8 +178,6 @@ 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
- * @cb: called at the end of done packet
- * @data: this data will pass back to cb
*
* Return: 0 for success; else the error code is returned
*
@@ -187,19 +185,6 @@ 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, cmdq_async_flush_cb cb,
- void *data);
-
-/**
- * cmdq_pkt_flush() - trigger CMDQ to execute the CMDQ packet
- * @pkt: the CMDQ packet
- *
- * Return: 0 for success; else the error code is returned
- *
- * Trigger CMDQ to execute the CMDQ packet. Note that this is a
- * synchronous flush function. When the function returned, the recorded
- * commands have been done.
- */
-int cmdq_pkt_flush(struct cmdq_pkt *pkt);
+int cmdq_pkt_flush_async(struct cmdq_pkt *pkt);

#endif /* __MTK_CMDQ_H__ */
--
2.17.1
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