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path: root/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
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Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_crtc.c')
-rw-r--r--drivers/gpu/drm/mediatek/mtk_drm_crtc.c175
1 files changed, 151 insertions, 24 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index a4e80e499674..d661edf7e0fe 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -4,6 +4,8 @@
*/
#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+#include <linux/mailbox_controller.h>
#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
@@ -50,8 +52,10 @@ struct mtk_drm_crtc {
bool pending_async_planes;
#if IS_REACHABLE(CONFIG_MTK_CMDQ)
- struct cmdq_client *cmdq_client;
+ struct cmdq_client cmdq_client;
+ struct cmdq_pkt cmdq_handle;
u32 cmdq_event;
+ u32 cmdq_vblank_cnt;
#endif
struct device *mmsys_dev;
@@ -104,12 +108,60 @@ static void mtk_drm_finish_page_flip(struct mtk_drm_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) {
+ kfree(pkt);
+ 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);
+ kfree(pkt);
+ 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);
+ kfree(pkt);
+}
+#endif
+
static void mtk_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
mtk_mutex_put(mtk_crtc->mutex);
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ mtk_drm_cmdq_pkt_destroy(&mtk_crtc->cmdq_handle);
+ if (mtk_crtc->cmdq_client.chan) {
+ mbox_free_channel(mtk_crtc->cmdq_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
+ }
+#endif
drm_crtc_cleanup(crtc);
}
@@ -222,9 +274,46 @@ 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;
+ struct cmdq_client *cmdq_cl = container_of(cl, struct cmdq_client, client);
+ struct mtk_drm_crtc *mtk_crtc = container_of(cmdq_cl, struct mtk_drm_crtc, cmdq_client);
+ struct mtk_crtc_state *state;
+ unsigned int i;
+
+ if (data->sta < 0)
+ return;
+
+ state = to_mtk_crtc_state(mtk_crtc->base.state);
+
+ state->pending_config = false;
+
+ if (mtk_crtc->pending_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.config = false;
+ }
+ mtk_crtc->pending_planes = false;
+ }
+
+ if (mtk_crtc->pending_async_planes) {
+ for (i = 0; i < mtk_crtc->layer_nr; i++) {
+ struct drm_plane *plane = &mtk_crtc->planes[i];
+ struct mtk_plane_state *plane_state;
+
+ plane_state = to_mtk_plane_state(plane->state);
+
+ plane_state->pending.async_config = false;
+ }
+ mtk_crtc->pending_async_planes = false;
+ }
+
+ mtk_crtc->cmdq_vblank_cnt = 0;
}
#endif
@@ -378,7 +467,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
state->pending_vrefresh, 0,
cmdq_handle);
- state->pending_config = false;
+ if (!cmdq_handle)
+ state->pending_config = false;
}
if (mtk_crtc->pending_planes) {
@@ -398,9 +488,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.config = false;
+ if (!cmdq_handle)
+ plane_state->pending.config = false;
}
- mtk_crtc->pending_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_planes = false;
}
if (mtk_crtc->pending_async_planes) {
@@ -420,9 +513,12 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc,
mtk_ddp_comp_layer_config(comp, local_layer,
plane_state,
cmdq_handle);
- plane_state->pending.async_config = false;
+ if (!cmdq_handle)
+ plane_state->pending.async_config = false;
}
- mtk_crtc->pending_async_planes = false;
+
+ if (!cmdq_handle)
+ mtk_crtc->pending_async_planes = false;
}
}
@@ -430,7 +526,7 @@ 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;
@@ -468,14 +564,28 @@ static void mtk_drm_crtc_update_config(struct mtk_drm_crtc *mtk_crtc,
mtk_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_client.chan) {
+ mbox_flush(mtk_crtc->cmdq_client.chan, 2000);
+ 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);
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 command should execute in next 3 vblank.
+ * One vblank interrupt before send message (occasionally)
+ * and one vblank interrupt after cmdq done,
+ * so it's timeout after 3 vblank interrupt.
+ * If it fail to execute in next 3 vblank, timeout happen.
+ */
+ mtk_crtc->cmdq_vblank_cnt = 3;
+
+ mbox_send_message(mtk_crtc->cmdq_client.chan, cmdq_handle);
+ mbox_client_txdone(mtk_crtc->cmdq_client.chan, 0);
}
#endif
mtk_crtc->config_updating = false;
@@ -489,12 +599,15 @@ static void mtk_crtc_ddp_irq(void *data)
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_client.chan)
+ mtk_crtc_ddp_config(crtc, NULL);
+ else if (mtk_crtc->cmdq_vblank_cnt > 0 && --mtk_crtc->cmdq_vblank_cnt == 0)
+ DRM_ERROR("mtk_crtc %d CMDQ execute command timeout!\n",
+ drm_crtc_index(&mtk_crtc->base));
#else
if (!priv->data->shadow_register)
-#endif
mtk_crtc_ddp_config(crtc, NULL);
-
+#endif
mtk_drm_finish_page_flip(mtk_crtc);
}
@@ -829,16 +942,20 @@ 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_client.client.dev = mtk_crtc->mmsys_dev;
+ mtk_crtc->cmdq_client.client.tx_block = false;
+ mtk_crtc->cmdq_client.client.knows_txdone = true;
+ mtk_crtc->cmdq_client.client.rx_callback = ddp_cmdq_cb;
+ mtk_crtc->cmdq_client.chan =
+ mbox_request_channel(&mtk_crtc->cmdq_client.client,
+ drm_crtc_index(&mtk_crtc->base));
+ if (IS_ERR(mtk_crtc->cmdq_client.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_client.chan = NULL;
}
- if (mtk_crtc->cmdq_client) {
+ if (mtk_crtc->cmdq_client.chan) {
ret = of_property_read_u32_index(priv->mutex_node,
"mediatek,gce-events",
drm_crtc_index(&mtk_crtc->base),
@@ -846,8 +963,18 @@ 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));
- cmdq_mbox_destroy(mtk_crtc->cmdq_client);
- mtk_crtc->cmdq_client = NULL;
+ 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);
+ 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_client.chan);
+ mtk_crtc->cmdq_client.chan = NULL;
+ }
}
}
#endif