1 files changed, 466 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
new file mode 100644
index 000000000000..86c054600a08
--- /dev/null
+++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c
@@ -0,0 +1,466 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Ping-Hsun Wu <ping-hsun.wu@mediatek.com>
+ */
+
+#include <linux/mailbox_controller.h>
+#include <linux/platform_device.h>
+#include "mtk-mdp3-cmdq.h"
+#include "mtk-mdp3-comp.h"
+#include "mtk-mdp3-core.h"
+#include "mtk-mdp3-m2m.h"
+
+#define MDP_PATH_MAX_COMPS	IMG_MAX_COMPONENTS
+
+struct mdp_path {
+	struct mdp_dev		*mdp_dev;
+	struct mdp_comp_ctx	comps[MDP_PATH_MAX_COMPS];
+	u32			num_comps;
+	const struct img_config	*config;
+	const struct img_ipi_frameparam *param;
+	const struct v4l2_rect	*composes[IMG_MAX_HW_OUTPUTS];
+	struct v4l2_rect	bounds[IMG_MAX_HW_OUTPUTS];
+};
+
+#define has_op(ctx, op) \
+	((ctx)->comp->ops && (ctx)->comp->ops->op)
+ #define call_op(ctx, op, ...) \
+	(has_op(ctx, op) ? (ctx)->comp->ops->op(ctx, ##__VA_ARGS__) : 0)
+
+static bool is_output_disabled(const struct img_compparam *param, u32 count)
+{
+	return (count < param->num_subfrms) ?
+		(param->frame.output_disable ||
+		param->subfrms[count].tile_disable) :
+		true;
+}
+
+static int mdp_path_subfrm_require(const struct mdp_path *path,
+				   struct mdp_cmdq_cmd *cmd,
+				   s32 *mutex_id, u32 count)
+{
+	const struct img_config *config = path->config;
+	const struct mdp_comp_ctx *ctx;
+	const struct mtk_mdp_driver_data *data = path->mdp_dev->mdp_data;
+	struct device *dev = &path->mdp_dev->pdev->dev;
+	struct mtk_mutex **mutex = path->mdp_dev->mdp_mutex;
+	int id, index;
+
+	/* Decide which mutex to use based on the current pipeline */
+	switch (path->comps[0].comp->id) {
+	case MDP_COMP_RDMA0:
+		*mutex_id = MDP_PIPE_RDMA0;
+		break;
+	case MDP_COMP_ISP_IMGI:
+		*mutex_id = MDP_PIPE_IMGI;
+		break;
+	case MDP_COMP_WPEI:
+		*mutex_id = MDP_PIPE_WPEI;
+		break;
+	case MDP_COMP_WPEI2:
+		*mutex_id = MDP_PIPE_WPEI2;
+		break;
+	default:
+		dev_err(dev, "Unknown pipeline and no mutex is assigned");
+		return -EINVAL;
+	}
+
+	/* Set mutex mod */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		if (is_output_disabled(ctx->param, count))
+			continue;
+		id = ctx->comp->id;
+		mtk_mutex_write_mod(mutex[*mutex_id],
+				    data->mdp_mutex_table_idx[id], false);
+	}
+
+	mtk_mutex_write_sof(mutex[*mutex_id],
+			    MUTEX_SOF_IDX_SINGLE_MODE);
+
+	return 0;
+}
+
+static int mdp_path_subfrm_run(const struct mdp_path *path,
+			       struct mdp_cmdq_cmd *cmd,
+			       s32 *mutex_id, u32 count)
+{
+	const struct img_config *config = path->config;
+	const struct mdp_comp_ctx *ctx;
+	struct device *dev = &path->mdp_dev->pdev->dev;
+	struct mtk_mutex **mutex = path->mdp_dev->mdp_mutex;
+	int index;
+	s32 event;
+
+	if (-1 == *mutex_id) {
+		dev_err(dev, "Incorrect mutex id");
+		return -EINVAL;
+	}
+
+	/* Wait WROT SRAM shared to DISP RDMA */
+	/* Clear SOF event for each engine */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		if (is_output_disabled(ctx->param, count))
+			continue;
+		event = ctx->comp->gce_event[MDP_GCE_EVENT_SOF];
+		if (event != MDP_GCE_NO_EVENT)
+			MM_REG_CLEAR(cmd, event);
+	}
+
+	/* Enable the mutex */
+	mtk_mutex_enable_by_cmdq(mutex[*mutex_id], (void *)&cmd->pkt);
+
+	/* Wait SOF events and clear mutex modules (optional) */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		if (is_output_disabled(ctx->param, count))
+			continue;
+		event = ctx->comp->gce_event[MDP_GCE_EVENT_SOF];
+		if (event != MDP_GCE_NO_EVENT)
+			MM_REG_WAIT(cmd, event);
+	}
+
+	return 0;
+}
+
+static int mdp_path_ctx_init(struct mdp_dev *mdp, struct mdp_path *path)
+{
+	const struct img_config *config = path->config;
+	int index, ret;
+
+	if (config->num_components < 1)
+		return -EINVAL;
+
+	for (index = 0; index < config->num_components; index++) {
+		ret = mdp_comp_ctx_config(mdp, &path->comps[index],
+					  &config->components[index],
+					  path->param);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int mdp_path_config_subfrm(struct mdp_cmdq_cmd *cmd,
+				  struct mdp_path *path, u32 count)
+{
+	const struct img_config *config = path->config;
+	const struct img_mmsys_ctrl *ctrl = &config->ctrls[count];
+	const struct img_mux *set;
+	struct mdp_comp_ctx *ctx;
+	s32 mutex_id;
+	int index, ret;
+
+	/* Acquire components */
+	ret = mdp_path_subfrm_require(path, cmd, &mutex_id, count);
+	if (ret)
+		return ret;
+	/* Enable mux settings */
+	for (index = 0; index < ctrl->num_sets; index++) {
+		set = &ctrl->sets[index];
+		cmdq_pkt_write_mask(&cmd->pkt, set->subsys_id, set->reg,
+				    set->value, 0xFFFFFFFF);
+	}
+	/* Config sub-frame information */
+	for (index = (config->num_components - 1); index >= 0; index--) {
+		ctx = &path->comps[index];
+		if (is_output_disabled(ctx->param, count))
+			continue;
+		ret = call_op(ctx, config_subfrm, cmd, count);
+		if (ret)
+			return ret;
+	}
+	/* Run components */
+	ret = mdp_path_subfrm_run(path, cmd, &mutex_id, count);
+	if (ret)
+		return ret;
+	/* Wait components done */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		if (is_output_disabled(ctx->param, count))
+			continue;
+		ret = call_op(ctx, wait_comp_event, cmd);
+		if (ret)
+			return ret;
+	}
+	/* Advance to the next sub-frame */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		ret = call_op(ctx, advance_subfrm, cmd, count);
+		if (ret)
+			return ret;
+	}
+	/* Disable mux settings */
+	for (index = 0; index < ctrl->num_sets; index++) {
+		set = &ctrl->sets[index];
+		cmdq_pkt_write_mask(&cmd->pkt, set->subsys_id, set->reg,
+				    0, 0xFFFFFFFF);
+	}
+
+	return 0;
+}
+
+static int mdp_path_config(struct mdp_dev *mdp, struct mdp_cmdq_cmd *cmd,
+			   struct mdp_path *path)
+{
+	const struct img_config *config = path->config;
+	struct mdp_comp_ctx *ctx;
+	int index, count, ret;
+
+	/* Config path frame */
+	/* Reset components */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		ret = call_op(ctx, init_comp, cmd);
+		if (ret)
+			return ret;
+	}
+	/* Config frame mode */
+	for (index = 0; index < config->num_components; index++) {
+		const struct v4l2_rect *compose =
+			path->composes[ctx->param->outputs[0]];
+
+		ctx = &path->comps[index];
+		ret = call_op(ctx, config_frame, cmd, compose);
+		if (ret)
+			return ret;
+	}
+
+	/* Config path sub-frames */
+	for (count = 0; count < config->num_subfrms; count++) {
+		ret = mdp_path_config_subfrm(cmd, path, count);
+		if (ret)
+			return ret;
+	}
+	/* Post processing information */
+	for (index = 0; index < config->num_components; index++) {
+		ctx = &path->comps[index];
+		ret = call_op(ctx, post_process, cmd);
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+static int mdp_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);
+		return -ENOMEM;
+	}
+
+	pkt->pa_base = dma_addr;
+
+	return 0;
+}
+
+static void mdp_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);
+	pkt->va_base = NULL;
+}
+
+static void mdp_auto_release_work(struct work_struct *work)
+{
+	struct mdp_cmdq_cmd *cmd;
+	struct mdp_dev *mdp;
+
+	cmd = container_of(work, struct mdp_cmdq_cmd, auto_release_work);
+	mdp = cmd->mdp;
+
+	mtk_mutex_unprepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]);
+	mdp_comp_clocks_off(&mdp->pdev->dev, cmd->comps,
+			    cmd->num_comps);
+
+	atomic_dec(&mdp->job_count);
+	wake_up(&mdp->callback_wq);
+
+	mdp_cmdq_pkt_destroy(&cmd->pkt);
+	kfree(cmd->comps);
+	cmd->comps = NULL;
+	kfree(cmd);
+	cmd = NULL;
+}
+
+static void mdp_handle_cmdq_callback(struct mbox_client *cl, void *mssg)
+{
+	struct mdp_cmdq_cmd *cmd;
+	struct cmdq_cb_data *data;
+	struct mdp_dev *mdp;
+	struct device *dev;
+
+	if (!mssg) {
+		pr_info("%s:no callback data\n", __func__);
+		return;
+	}
+
+	data = (struct cmdq_cb_data *)mssg;
+	cmd = container_of(data->pkt, struct mdp_cmdq_cmd, pkt);
+	mdp = cmd->mdp;
+	dev = &mdp->pdev->dev;
+
+	if (cmd->mdp_ctx)
+		mdp_m2m_job_finish(cmd->mdp_ctx);
+
+	if (cmd->user_cmdq_cb) {
+		struct cmdq_cb_data user_cb_data;
+
+		user_cb_data.sta = data->sta;
+		user_cb_data.pkt = data->pkt;
+		cmd->user_cmdq_cb(user_cb_data);
+	}
+
+	INIT_WORK(&cmd->auto_release_work, mdp_auto_release_work);
+	if (!queue_work(mdp->clock_wq, &cmd->auto_release_work)) {
+		dev_err(dev, "%s:queue_work fail!\n", __func__);
+		mtk_mutex_unprepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]);
+		mdp_comp_clocks_off(&mdp->pdev->dev, cmd->comps,
+				    cmd->num_comps);
+
+		atomic_dec(&mdp->job_count);
+		wake_up(&mdp->callback_wq);
+
+		mdp_cmdq_pkt_destroy(&cmd->pkt);
+		kfree(cmd->comps);
+		cmd->comps = NULL;
+		kfree(cmd);
+		cmd = NULL;
+	}
+}
+
+int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param)
+{
+	struct mdp_path *path = NULL;
+	struct mdp_cmdq_cmd *cmd = NULL;
+	struct mdp_comp *comps = NULL;
+	struct device *dev = &mdp->pdev->dev;
+	int i, ret;
+
+	atomic_inc(&mdp->job_count);
+	if (atomic_read(&mdp->suspended)) {
+		atomic_dec(&mdp->job_count);
+		return -ECANCELED;
+	}
+
+	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+	if (!cmd) {
+		ret = -ENOMEM;
+		goto err_cmdq_data;
+	}
+
+	if (mdp_cmdq_pkt_create(mdp->cmdq_clt, &cmd->pkt, SZ_16K)) {
+		ret = -ENOMEM;
+		goto err_cmdq_data;
+	}
+
+	comps = kcalloc(param->config->num_components, sizeof(*comps),
+			GFP_KERNEL);
+	if (!comps) {
+		ret = -ENOMEM;
+		goto err_cmdq_data;
+	}
+
+	path = kzalloc(sizeof(*path), GFP_KERNEL);
+	if (!path) {
+		ret = -ENOMEM;
+		goto err_cmdq_data;
+	}
+
+	path->mdp_dev = mdp;
+	path->config = param->config;
+	path->param = param->param;
+	for (i = 0; i < param->param->num_outputs; i++) {
+		path->bounds[i].left = 0;
+		path->bounds[i].top = 0;
+		path->bounds[i].width =
+			param->param->outputs[i].buffer.format.width;
+		path->bounds[i].height =
+			param->param->outputs[i].buffer.format.height;
+		path->composes[i] = param->composes[i] ?
+			param->composes[i] : &path->bounds[i];
+	}
+
+	ret = mdp_path_ctx_init(mdp, path);
+	if (ret) {
+		dev_err(dev, "mdp_path_ctx_init error\n");
+		goto err_cmdq_data;
+	}
+
+	mtk_mutex_prepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]);
+
+	ret = mdp_path_config(mdp, cmd, path);
+	if (ret) {
+		dev_err(dev, "mdp_path_config error\n");
+		goto err_cmdq_data;
+	}
+	cmdq_pkt_finalize(&cmd->pkt);
+
+	for (i = 0; i < param->config->num_components; i++)
+		memcpy(&comps[i], path->comps[i].comp,
+		       sizeof(struct mdp_comp));
+
+	mdp->cmdq_clt->client.rx_callback = mdp_handle_cmdq_callback;
+	cmd->mdp = mdp;
+	cmd->user_cmdq_cb = param->cmdq_cb;
+	cmd->user_cb_data = param->cb_data;
+	cmd->comps = comps;
+	cmd->num_comps = param->config->num_components;
+	cmd->mdp_ctx = param->mdp_ctx;
+
+	ret = mdp_comp_clocks_on(&mdp->pdev->dev, cmd->comps, cmd->num_comps);
+	if (ret) {
+		dev_err(dev, "comp %d failed to enable clock!\n", ret);
+		goto err_clock_off;
+	}
+
+	dma_sync_single_for_device(mdp->cmdq_clt->chan->mbox->dev,
+				   cmd->pkt.pa_base, cmd->pkt.cmd_buf_size,
+				   DMA_TO_DEVICE);
+	ret = mbox_send_message(mdp->cmdq_clt->chan, &cmd->pkt);
+	if (ret < 0) {
+		dev_err(dev, "mbox send message fail %d!\n", ret);
+		goto err_clock_off;
+	}
+	mbox_client_txdone(mdp->cmdq_clt->chan, 0);
+
+	kfree(path);
+	return 0;
+
+err_clock_off:
+	mtk_mutex_unprepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]);
+	mdp_comp_clocks_off(&mdp->pdev->dev, cmd->comps,
+			    cmd->num_comps);
+err_cmdq_data:
+	kfree(path);
+	atomic_dec(&mdp->job_count);
+	wake_up(&mdp->callback_wq);
+	if (cmd && cmd->pkt.buf_size > 0)
+		mdp_cmdq_pkt_destroy(&cmd->pkt);
+	kfree(comps);
+	kfree(cmd);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(mdp_cmdq_send);