[PATCH v5 14/16] drm/mediatek: add ovl_adaptor support for MT8195
Nancy.Lin
nancy.lin at mediatek.com
Mon Sep 6 00:15:37 PDT 2021
Add ovl_adaptor driver for MT8195.
Ovl_adaptor is an encapsulated module and designed for simplified
DRM control flow. This module is composed of 8 RDMAs, 4 MERGEs and
an ETHDR. Two RDMAs merge into one layer, so this module support 4
layers.
Signed-off-by: Nancy.Lin <nancy.lin at mediatek.com>
---
drivers/gpu/drm/mediatek/Makefile | 1 +
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 16 +
.../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 408 ++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
4 files changed, 426 insertions(+)
create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index fb158a1e7f06..3abd27d7c91d 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -6,6 +6,7 @@ mediatek-drm-y := mtk_disp_aal.o \
mtk_disp_gamma.o \
mtk_disp_merge.o \
mtk_disp_ovl.o \
+ mtk_disp_ovl_adaptor.o \
mtk_disp_rdma.o \
mtk_drm_crtc.o \
mtk_drm_ddp_comp.o \
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 2446ad0a4977..6a4f4c42aedb 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -113,6 +113,22 @@ void mtk_rdma_enable_vblank(struct device *dev,
void *vblank_cb_data);
void mtk_rdma_disable_vblank(struct device *dev);
+int mtk_ovl_adaptor_clk_enable(struct device *dev);
+void mtk_ovl_adaptor_clk_disable(struct device *dev);
+void mtk_ovl_adaptor_config(struct device *dev, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc, struct cmdq_pkt *cmdq_pkt);
+void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx,
+ struct mtk_plane_state *state,
+ struct cmdq_pkt *cmdq_pkt);
+void mtk_ovl_adaptor_enable_vblank(struct device *dev,
+ void (*vblank_cb)(void *),
+ void *vblank_cb_data);
+void mtk_ovl_adaptor_disable_vblank(struct device *dev);
+void mtk_ovl_adaptor_start(struct device *dev);
+void mtk_ovl_adaptor_stop(struct device *dev);
+unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev);
+
int mtk_mdp_rdma_clk_enable(struct device *dev);
void mtk_mdp_rdma_clk_disable(struct device *dev);
void mtk_mdp_rdma_start(struct device *dev, struct cmdq_pkt *cmdq_pkt);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
new file mode 100644
index 000000000000..068682c6fe07
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -0,0 +1,408 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#include <drm/drm_fourcc.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
+#include <linux/soc/mediatek/mtk-cmdq.h>
+
+#include "mtk_drm_drv.h"
+#include "mtk_drm_crtc.h"
+#include "mtk_drm_ddp_comp.h"
+#include "mtk_disp_drv.h"
+#include "mtk_ethdr.h"
+
+#define MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH 1920
+#define MTK_OVL_ADAPTOR_LAYER_NUM 4
+
+enum mtk_ovl_adaptor_comp_type {
+ OVL_ADAPTOR_TYPE_RDMA = 0,
+ OVL_ADAPTOR_TYPE_MERGE,
+ OVL_ADAPTOR_TYPE_NUM,
+};
+
+enum mtk_ovl_adaptor_comp_id {
+ OVL_ADAPTOR_MDP_RDMA0,
+ OVL_ADAPTOR_MDP_RDMA1,
+ OVL_ADAPTOR_MDP_RDMA2,
+ OVL_ADAPTOR_MDP_RDMA3,
+ OVL_ADAPTOR_MDP_RDMA4,
+ OVL_ADAPTOR_MDP_RDMA5,
+ OVL_ADAPTOR_MDP_RDMA6,
+ OVL_ADAPTOR_MDP_RDMA7,
+ OVL_ADAPTOR_MERGE0,
+ OVL_ADAPTOR_MERGE1,
+ OVL_ADAPTOR_MERGE2,
+ OVL_ADAPTOR_MERGE3,
+ OVL_ADAPTOR_ID_MAX
+};
+
+struct ovl_adaptor_comp_match {
+ enum mtk_ovl_adaptor_comp_type type;
+ int alias_id;
+};
+
+struct mtk_disp_ovl_adaptor {
+ struct device *ovl_adaptor_comp[OVL_ADAPTOR_ID_MAX];
+ struct device *mmsys_dev;
+};
+
+static const char * const ovl_adaptor_comp_str[] = {
+ "OVL_ADAPTOR_MDP_RDMA0",
+ "OVL_ADAPTOR_MDP_RDMA1",
+ "OVL_ADAPTOR_MDP_RDMA2",
+ "OVL_ADAPTOR_MDP_RDMA3",
+ "OVL_ADAPTOR_MDP_RDMA4",
+ "OVL_ADAPTOR_MDP_RDMA5",
+ "OVL_ADAPTOR_MDP_RDMA6",
+ "OVL_ADAPTOR_MDP_RDMA7",
+ "OVL_ADAPTOR_MERGE0",
+ "OVL_ADAPTOR_MERGE1",
+ "OVL_ADAPTOR_MERGE2",
+ "OVL_ADAPTOR_MERGE3",
+ "OVL_ADAPTOR_ID_MAX"
+};
+
+static const char * const private_comp_stem[OVL_ADAPTOR_TYPE_NUM] = {
+ [OVL_ADAPTOR_TYPE_RDMA] = "vdo1_rdma",
+ [OVL_ADAPTOR_TYPE_MERGE] = "merge",
+};
+
+static const struct ovl_adaptor_comp_match comp_matches[OVL_ADAPTOR_ID_MAX] = {
+ [OVL_ADAPTOR_MDP_RDMA0] = { OVL_ADAPTOR_TYPE_RDMA, 0 },
+ [OVL_ADAPTOR_MDP_RDMA1] = { OVL_ADAPTOR_TYPE_RDMA, 1 },
+ [OVL_ADAPTOR_MDP_RDMA2] = { OVL_ADAPTOR_TYPE_RDMA, 2 },
+ [OVL_ADAPTOR_MDP_RDMA3] = { OVL_ADAPTOR_TYPE_RDMA, 3 },
+ [OVL_ADAPTOR_MDP_RDMA4] = { OVL_ADAPTOR_TYPE_RDMA, 4 },
+ [OVL_ADAPTOR_MDP_RDMA5] = { OVL_ADAPTOR_TYPE_RDMA, 5 },
+ [OVL_ADAPTOR_MDP_RDMA6] = { OVL_ADAPTOR_TYPE_RDMA, 6 },
+ [OVL_ADAPTOR_MDP_RDMA7] = { OVL_ADAPTOR_TYPE_RDMA, 7 },
+ [OVL_ADAPTOR_MERGE0] = { OVL_ADAPTOR_TYPE_MERGE, 1 },
+ [OVL_ADAPTOR_MERGE1] = { OVL_ADAPTOR_TYPE_MERGE, 2 },
+ [OVL_ADAPTOR_MERGE2] = { OVL_ADAPTOR_TYPE_MERGE, 3 },
+ [OVL_ADAPTOR_MERGE3] = { OVL_ADAPTOR_TYPE_MERGE, 4 },
+};
+
+static struct device *get_ovl_adaptor(struct device *parent)
+{
+ return device_find_child_by_name(parent, "mediatek-disp-ovl-adaptor");
+}
+
+void mtk_ovl_adaptor_layer_config(struct device *dev, unsigned int idx,
+ struct mtk_plane_state *state,
+ struct cmdq_pkt *cmdq_pkt)
+{
+ struct device *ovl_adaptor_dev = get_ovl_adaptor(dev);
+ struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(ovl_adaptor_dev);
+ struct mtk_plane_pending_state *pending = &state->pending;
+ struct mtk_mdp_rdma_cfg rdma_config = {0};
+ struct device *rdma_l;
+ struct device *rdma_r;
+ struct device *merge;
+ const struct drm_format_info *fmt_info = drm_format_info(pending->format);
+ bool use_dual_pipe = false;
+ unsigned int l_w = 0;
+ unsigned int r_w = 0;
+
+ dev_dbg(dev, "%s+ idx:%d, enable:%d, fmt:0x%x\n", __func__, idx,
+ pending->enable, pending->format);
+ dev_dbg(dev, "addr 0x%lx, fb w:%d, {%d,%d,%d,%d}\n",
+ pending->addr, (pending->pitch / fmt_info->cpp[0]),
+ pending->x, pending->y, pending->width, pending->height);
+
+ rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx];
+ rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * idx + 1];
+ merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + idx];
+
+ if (!pending->enable) {
+ mtk_merge_disable(merge, cmdq_pkt);
+ mtk_mdp_rdma_stop(rdma_l, cmdq_pkt);
+ mtk_mdp_rdma_stop(rdma_r, cmdq_pkt);
+ mtk_ethdr_layer_config(dev, idx, state, cmdq_pkt);
+ return;
+ }
+
+ /* ETHDR is in 1T2P domain, width needs to be 2 pixels align */
+ pending->width = ALIGN_DOWN(pending->width, 2);
+
+ if (pending->width > MTK_OVL_ADAPTOR_RDMA_MAX_WIDTH)
+ use_dual_pipe = true;
+
+ if (use_dual_pipe) {
+ l_w = (pending->width / 2) + ((pending->width / 2) % 2);
+ r_w = pending->width - l_w;
+ } else {
+ l_w = pending->width;
+ }
+ mtk_merge_advance_config(merge, l_w, r_w, pending->height, 0, 0, cmdq_pkt);
+ mtk_mmsys_ddp_config(ovl_adaptor->mmsys_dev, MMSYS_CONFIG_MERGE_ASYNC_WIDTH,
+ idx, pending->width / 2, cmdq_pkt);
+ mtk_mmsys_ddp_config(ovl_adaptor->mmsys_dev, MMSYS_CONFIG_MERGE_ASYNC_HEIGHT,
+ idx, pending->height, cmdq_pkt);
+
+ rdma_config.csc_enable = fmt_info->is_yuv ? true : false;
+ rdma_config.profile = RDMA_CSC_FULL709_TO_RGB;
+ rdma_config.width = l_w;
+ rdma_config.height = pending->height;
+ rdma_config.addr0 = pending->addr;
+ rdma_config.pitch = pending->pitch;
+ rdma_config.fmt = pending->format;
+ mtk_mdp_rdma_config(rdma_l, &rdma_config, cmdq_pkt);
+
+ if (use_dual_pipe) {
+ rdma_config.x_left = l_w;
+ rdma_config.width = r_w;
+ mtk_mdp_rdma_config(rdma_r, &rdma_config, cmdq_pkt);
+ }
+
+ mtk_merge_enable(merge, cmdq_pkt);
+ mtk_merge_unmute(merge, cmdq_pkt);
+
+ mtk_mdp_rdma_start(rdma_l, cmdq_pkt);
+ if (use_dual_pipe)
+ mtk_mdp_rdma_start(rdma_r, cmdq_pkt);
+ else
+ mtk_mdp_rdma_stop(rdma_r, cmdq_pkt);
+
+ mtk_ethdr_layer_config(dev, idx, state, cmdq_pkt);
+}
+
+void mtk_ovl_adaptor_config(struct device *dev, unsigned int w,
+ unsigned int h, unsigned int vrefresh,
+ unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
+{
+ mtk_ethdr_config(dev, w, h, vrefresh, bpc, cmdq_pkt);
+}
+
+void mtk_ovl_adaptor_start(struct device *dev)
+{
+ mtk_ethdr_start(dev);
+}
+
+void mtk_ovl_adaptor_stop(struct device *dev)
+{
+ struct device *ovl_adaptor_dev = get_ovl_adaptor(dev);
+ struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(ovl_adaptor_dev);
+ struct device *rdma_l;
+ struct device *rdma_r;
+ struct device *merge;
+ u32 i;
+
+ for (i = 0; i < MTK_OVL_ADAPTOR_LAYER_NUM; i++) {
+ rdma_l = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * i];
+ rdma_r = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MDP_RDMA0 + 2 * i + 1];
+ merge = ovl_adaptor->ovl_adaptor_comp[OVL_ADAPTOR_MERGE0 + i];
+
+ mtk_mdp_rdma_stop(rdma_l, NULL);
+ mtk_mdp_rdma_stop(rdma_r, NULL);
+ mtk_merge_stop(merge);
+ }
+
+ mtk_ethdr_stop(dev);
+}
+
+int mtk_ovl_adaptor_clk_enable(struct device *dev)
+{
+ struct device *ovl_adaptor_dev = get_ovl_adaptor(dev);
+ struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(ovl_adaptor_dev);
+ struct device *comp;
+ int ret;
+ int i;
+
+ for (i = OVL_ADAPTOR_MDP_RDMA0; i < OVL_ADAPTOR_ID_MAX; i++) {
+ comp = ovl_adaptor->ovl_adaptor_comp[i];
+
+ if (i < OVL_ADAPTOR_MERGE0)
+ ret = mtk_mdp_rdma_clk_enable(comp);
+ else
+ ret = mtk_merge_clk_enable(comp);
+ if (ret) {
+ dev_err(dev,
+ "Failed to enable clock %d, err %d-%s\n",
+ i, ret, ovl_adaptor_comp_str[i]);
+ goto clk_err;
+ }
+ }
+
+ mtk_ethdr_clk_enable(dev);
+ return ret;
+
+clk_err:
+ while (--i >= 0) {
+ comp = ovl_adaptor->ovl_adaptor_comp[i];
+ if (i < OVL_ADAPTOR_MERGE0)
+ mtk_mdp_rdma_clk_disable(comp);
+ else
+ mtk_merge_clk_disable(comp);
+ }
+ return ret;
+}
+
+void mtk_ovl_adaptor_clk_disable(struct device *dev)
+{
+ struct device *ovl_adaptor_dev = get_ovl_adaptor(dev);
+ struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(ovl_adaptor_dev);
+ struct device *comp;
+ int i;
+
+ for (i = OVL_ADAPTOR_MDP_RDMA0; i < OVL_ADAPTOR_ID_MAX; i++) {
+ comp = ovl_adaptor->ovl_adaptor_comp[i];
+
+ if (i < OVL_ADAPTOR_MERGE0)
+ mtk_mdp_rdma_clk_disable(comp);
+ else
+ mtk_merge_clk_disable(comp);
+ }
+ mtk_ethdr_clk_disable(dev);
+}
+
+unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev)
+{
+ return MTK_OVL_ADAPTOR_LAYER_NUM;
+}
+
+void mtk_ovl_adaptor_enable_vblank(struct device *dev, void (*vblank_cb)(void *),
+ void *vblank_cb_data)
+{
+ mtk_ethdr_enable_vblank(dev, vblank_cb, vblank_cb_data);
+}
+
+void mtk_ovl_adaptor_disable_vblank(struct device *dev)
+{
+ mtk_ethdr_disable_vblank(dev);
+}
+
+static int ovl_adaptor_comp_get_id(struct device *dev, struct device_node *node,
+ enum mtk_ovl_adaptor_comp_type type)
+{
+ int alias_id = of_alias_get_id(node, private_comp_stem[type]);
+ int ret;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(comp_matches); i++)
+ if (comp_matches[i].type == type &&
+ comp_matches[i].alias_id == alias_id)
+ return i;
+
+ dev_err(dev, "Failed to get id. type: %d, alias: %d\n", type, alias_id);
+ return -EINVAL;
+}
+
+static const struct of_device_id mtk_ovl_adaptor_comp_dt_ids[] = {
+ {
+ .compatible = "mediatek,mt8195-vdo1-rdma",
+ .data = (void *)OVL_ADAPTOR_TYPE_RDMA,
+ }, {
+ .compatible = "mediatek,mt8195-disp-merge",
+ .data = (void *)OVL_ADAPTOR_TYPE_MERGE,
+ },
+ {},
+};
+
+static int ovl_adaptor_comp_init(struct device *dev)
+{
+ struct mtk_disp_ovl_adaptor *priv = dev_get_drvdata(dev);
+ struct device_node *node, *parent;
+ struct platform_device *comp_pdev;
+ int i, ret;
+
+ parent = dev->parent->of_node->parent;
+
+ for_each_child_of_node(parent, node) {
+ const struct of_device_id *of_id;
+ enum mtk_ovl_adaptor_comp_type type;
+ int id;
+
+ of_id = of_match_node(mtk_ovl_adaptor_comp_dt_ids, node);
+ if (!of_id)
+ continue;
+
+ if (!of_device_is_available(node)) {
+ dev_info(dev, "Skipping disabled component %pOF\n",
+ node);
+ continue;
+ }
+
+ type = (enum mtk_ovl_adaptor_comp_type)of_id->data;
+ id = ovl_adaptor_comp_get_id(dev, node, type);
+ if (id < 0) {
+ dev_warn(dev, "Skipping unknown component %pOF\n",
+ node);
+ continue;
+ }
+
+ comp_pdev = of_find_device_by_node(node);
+ if (!comp_pdev) {
+ dev_warn(dev, "can't find platform device of node:%s\n",
+ node->name);
+ return -ENODEV;
+ }
+ priv->ovl_adaptor_comp[id] = &comp_pdev->dev;
+
+ dev_info(dev, "[DRM]dev:%s, node:%s\n", dev_name(priv->ovl_adaptor_comp[id]),
+ ovl_adaptor_comp_str[id]);
+ }
+
+ return 0;
+}
+
+static const struct of_device_id ovl_adaptor_driver_dt_match[] = {
+ { .compatible = "mediatek,mt8195-disp-ethdr"},
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtk_disp_ovl_adaptor_driver_dt_match);
+
+static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev)
+{
+ struct mtk_disp_ovl_adaptor *priv;
+ struct device *dev = &pdev->dev;
+ struct device_node *phandle = dev->parent->of_node;
+ const struct of_device_id *of_id;
+ int ret;
+ int i;
+
+ dev_info(dev, "%s+\n", __func__);
+
+ of_id = of_match_node(ovl_adaptor_driver_dt_match, phandle);
+ if (!of_id)
+ return -ENODEV;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->mmsys_dev = pdev->dev.platform_data;
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = ovl_adaptor_comp_init(dev);
+ if (ret) {
+ dev_notice(dev, "ovl_adaptor comp init fail\n");
+ return ret;
+ }
+
+ dev_info(dev, "%s-\n", __func__);
+ return ret;
+}
+
+static int mtk_disp_ovl_adaptor_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+struct platform_driver mtk_disp_ovl_adaptor_driver = {
+ .probe = mtk_disp_ovl_adaptor_probe,
+ .remove = mtk_disp_ovl_adaptor_remove,
+ .driver = {
+ .name = "mediatek-disp-ovl-adaptor",
+ .owner = THIS_MODULE,
+ },
+};
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index a58cebd01d35..1ad9f7edfcc7 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -51,6 +51,7 @@ extern struct platform_driver mtk_disp_ccorr_driver;
extern struct platform_driver mtk_disp_color_driver;
extern struct platform_driver mtk_disp_gamma_driver;
extern struct platform_driver mtk_disp_merge_driver;
+extern struct platform_driver mtk_disp_ovl_adaptor_driver;
extern struct platform_driver mtk_disp_ovl_driver;
extern struct platform_driver mtk_disp_rdma_driver;
extern struct platform_driver mtk_dpi_driver;
--
2.18.0
More information about the linux-arm-kernel
mailing list