// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022 MediaTek Inc.
* Author: Ping-Hsun Wu <[email protected]>
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/remoteproc.h>
#include <linux/remoteproc/mtk_scp.h>
#include <media/videobuf2-dma-contig.h>
#include "mtk-mdp3-core.h"
#include "mtk-mdp3-cfg.h"
#include "mtk-mdp3-m2m.h"
static const struct of_device_id mdp_of_ids[] = {
{ .compatible = "mediatek,mt8183-mdp3-rdma",
.data = &mt8183_mdp_driver_data,
},
{ .compatible = "mediatek,mt8188-mdp3-rdma",
.data = &mt8188_mdp_driver_data,
},
{ .compatible = "mediatek,mt8195-mdp3-rdma",
.data = &mt8195_mdp_driver_data,
},
{ .compatible = "mediatek,mt8195-mdp3-wrot",
.data = &mt8195_mdp_driver_data,
},
{},
};
MODULE_DEVICE_TABLE(of, mdp_of_ids);
static struct platform_device *__get_pdev_by_id(struct platform_device *pdev,
struct platform_device *from,
enum mdp_infra_id id)
{
struct device_node *node, *f = NULL;
struct platform_device *mdp_pdev = NULL;
const struct mtk_mdp_driver_data *mdp_data;
const char *compat;
if (!pdev)
return NULL;
if (id < MDP_INFRA_MMSYS || id >= MDP_INFRA_MAX) {
dev_err(&pdev->dev, "Illegal infra id %d\n", id);
return NULL;
}
mdp_data = of_device_get_match_data(&pdev->dev);
if (!mdp_data) {
dev_err(&pdev->dev, "have no driver data to find node\n");
return NULL;
}
compat = mdp_data->mdp_probe_infra[id].compatible;
if (strlen(compat) == 0)
return NULL;
if (from)
f = from->dev.of_node;
node = of_find_compatible_node(f, NULL, compat);
if (WARN_ON(!node)) {
dev_err(&pdev->dev, "find node from id %d failed\n", id);
return NULL;
}
mdp_pdev = of_find_device_by_node(node);
of_node_put(node);
if (WARN_ON(!mdp_pdev)) {
dev_err(&pdev->dev, "find pdev from id %d failed\n", id);
return NULL;
}
return mdp_pdev;
}
struct platform_device *mdp_get_plat_device(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *mdp_node;
struct platform_device *mdp_pdev;
mdp_node = of_parse_phandle(dev->of_node, MDP_PHANDLE_NAME, 0);
if (!mdp_node) {
dev_err(dev, "can't get node %s\n", MDP_PHANDLE_NAME);
return NULL;
}
mdp_pdev = of_find_device_by_node(mdp_node);
of_node_put(mdp_node);
return mdp_pdev;
}
EXPORT_SYMBOL_GPL(mdp_get_plat_device);
int mdp_vpu_get_locked(struct mdp_dev *mdp)
{
int ret = 0;
if (mdp->vpu_count++ == 0) {
ret = rproc_boot(mdp->rproc_handle);
if (ret) {
dev_err(&mdp->pdev->dev,
"vpu_load_firmware failed %d\n", ret);
goto err_load_vpu;
}
ret = mdp_vpu_register(mdp);
if (ret) {
dev_err(&mdp->pdev->dev,
"mdp_vpu register failed %d\n", ret);
goto err_reg_vpu;
}
ret = mdp_vpu_dev_init(&mdp->vpu, mdp->scp, &mdp->vpu_lock);
if (ret) {
dev_err(&mdp->pdev->dev,
"mdp_vpu device init failed %d\n", ret);
goto err_init_vpu;
}
}
return 0;
err_init_vpu:
mdp_vpu_unregister(mdp);
err_reg_vpu:
err_load_vpu:
mdp->vpu_count--;
return ret;
}
void mdp_vpu_put_locked(struct mdp_dev *mdp)
{
if (--mdp->vpu_count == 0) {
mdp_vpu_dev_deinit(&mdp->vpu);
mdp_vpu_unregister(mdp);
}
}
void mdp_video_device_release(struct video_device *vdev)
{
struct mdp_dev *mdp = (struct mdp_dev *)video_get_drvdata(vdev);
int i;
for (i = 0; i < mdp->mdp_data->pp_used; i++)
if (mdp->cmdq_clt[i])
cmdq_mbox_destroy(mdp->cmdq_clt[i]);
scp_put(mdp->scp);
destroy_workqueue(mdp->job_wq);
destroy_workqueue(mdp->clock_wq);
pm_runtime_disable(&mdp->pdev->dev);
vb2_dma_contig_clear_max_seg_size(&mdp->pdev->dev);
mdp_comp_destroy(mdp);
for (i = 0; i < mdp->mdp_data->pipe_info_len; i++) {
enum mdp_mm_subsys_id idx;
struct mtk_mutex *m;
u32 m_id;
idx = mdp->mdp_data->pipe_info[i].sub_id;
m_id = mdp->mdp_data->pipe_info[i].mutex_id;
m = mdp->mm_subsys[idx].mdp_mutex[m_id];
if (!IS_ERR_OR_NULL(m))
mtk_mutex_put(m);
}
mdp_vpu_shared_mem_free(&mdp->vpu);
v4l2_m2m_release(mdp->m2m_dev);
kfree(mdp);
}
static int mdp_mm_subsys_deploy(struct mdp_dev *mdp, enum mdp_infra_id id)
{
struct platform_device *mm_pdev = NULL;
struct device **dev;
int i;
if (!mdp)
return -EINVAL;
for (i = 0; i < MDP_MM_SUBSYS_MAX; i++) {
const char *compat;
enum mdp_infra_id sub_id = id + i;
switch (id) {
case MDP_INFRA_MMSYS:
dev = &mdp->mm_subsys[i].mmsys;
break;
case MDP_INFRA_MUTEX:
dev = &mdp->mm_subsys[i].mutex;
break;
default:
dev_err(&mdp->pdev->dev, "Unknown infra id %d", id);
return -EINVAL;
}
/*
* Not every chip has multiple multimedia subsystems, so
* the config may be null.
*/
compat = mdp->mdp_data->mdp_probe_infra[sub_id].compatible;
if (strlen(compat) == 0)
continue;
mm_pdev = __get_pdev_by_id(mdp->pdev, mm_pdev, sub_id);
if (WARN_ON(!mm_pdev))
return -ENODEV;
*dev = &mm_pdev->dev;
}
return 0;
}
static int mdp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct mdp_dev *mdp;
struct platform_device *mm_pdev;
struct resource *res;
int ret, i, mutex_id;
mdp = kzalloc(sizeof(*mdp), GFP_KERNEL);
if (!mdp) {
ret = -ENOMEM;
goto err_return;
}
mdp->pdev = pdev;
mdp->mdp_data = of_device_get_match_data(&pdev->dev);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res->start != mdp->mdp_data->mdp_con_res) {
platform_set_drvdata(pdev, mdp);
goto success_return;
}
ret = mdp_mm_subsys_deploy(mdp, MDP_INFRA_MMSYS);
if (ret)
goto err_destroy_device;
ret = mdp_mm_subsys_deploy(mdp, MDP_INFRA_MUTEX);
if (ret)
goto err_destroy_device;
for (i = 0; i < mdp->mdp_data->pipe_info_len; i++) {
enum mdp_mm_subsys_id idx;
struct mtk_mutex **m;
idx = mdp->mdp_data->pipe_info[i].sub_id;
mutex_id = mdp->mdp_data->pipe_info[i].mutex_id;
m = &mdp->mm_subsys[idx].mdp_mutex[mutex_id];
if (!IS_ERR_OR_NULL(*m))
continue;
*m = mtk_mutex_get(mdp->mm_subsys[idx].mutex);
if (IS_ERR(*m)) {
ret = PTR_ERR(*m);
goto err_free_mutex;
}
}
ret = mdp_comp_config(mdp);
if (ret) {
dev_err(dev, "Failed to config mdp components\n");
goto err_free_mutex;
}
mdp->job_wq = alloc_workqueue(MDP_MODULE_NAME, WQ_FREEZABLE, 0);
if (!mdp->job_wq) {
dev_err(dev, "Unable to create job workqueue\n");
ret = -ENOMEM;
goto err_deinit_comp;
}
mdp->clock_wq = alloc_workqueue(MDP_MODULE_NAME "-clock", WQ_FREEZABLE,
0);
if (!mdp->clock_wq) {
dev_err(dev, "Unable to create clock workqueue\n");
ret = -ENOMEM;
goto err_destroy_job_wq;
}
mdp->scp = scp_get(pdev);
if (!mdp->scp) {
mm_pdev = __get_pdev_by_id(pdev, NULL, MDP_INFRA_SCP);
if (WARN_ON(!mm_pdev)) {
dev_err(&pdev->dev, "Could not get scp device\n");
ret = -ENODEV;
goto err_destroy_clock_wq;
}
mdp->scp = platform_get_drvdata(mm_pdev);
}
mdp->rproc_handle = scp_get_rproc(mdp->scp);
dev_dbg(&pdev->dev, "MDP rproc_handle: %pK", mdp->rproc_handle);
mutex_init(&mdp->vpu_lock);
mutex_init(&mdp->m2m_lock);
for (i = 0; i < mdp->mdp_data->pp_used; i++) {
mdp->cmdq_clt[i] = cmdq_mbox_create(dev, i);
if (IS_ERR(mdp->cmdq_clt[i])) {
ret = PTR_ERR(mdp->cmdq_clt[i]);
goto err_mbox_destroy;
}
}
init_waitqueue_head(&mdp->callback_wq);
ida_init(&mdp->mdp_ida);
platform_set_drvdata(pdev, mdp);
vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
ret = v4l2_device_register(dev, &mdp->v4l2_dev);
if (ret) {
dev_err(dev, "Failed to register v4l2 device\n");
ret = -EINVAL;
goto err_mbox_destroy;
}
ret = mdp_m2m_device_register(mdp);
if (ret) {
v4l2_err(&mdp->v4l2_dev, "Failed to register m2m device\n");
goto err_unregister_device;
}
success_return:
dev_dbg(dev, "mdp-%d registered successfully\n", pdev->id);
return 0;
err_unregister_device:
v4l2_device_unregister(&mdp->v4l2_dev);
err_mbox_destroy:
while (--i >= 0)
cmdq_mbox_destroy(mdp->cmdq_clt[i]);
scp_put(mdp->scp);
err_destroy_clock_wq:
destroy_workqueue(mdp->clock_wq);
err_destroy_job_wq:
destroy_workqueue(mdp->job_wq);
err_deinit_comp:
mdp_comp_destroy(mdp);
err_free_mutex:
for (i = 0; i < mdp->mdp_data->pipe_info_len; i++) {
enum mdp_mm_subsys_id idx;
struct mtk_mutex *m;
idx = mdp->mdp_data->pipe_info[i].sub_id;
mutex_id = mdp->mdp_data->pipe_info[i].mutex_id;
m = mdp->mm_subsys[idx].mdp_mutex[mutex_id];
if (!IS_ERR_OR_NULL(m))
mtk_mutex_put(m);
}
err_destroy_device:
kfree(mdp);
err_return:
dev_dbg(dev, "Errno %d\n", ret);
return ret;
}
static void mdp_remove(struct platform_device *pdev)
{
struct mdp_dev *mdp = platform_get_drvdata(pdev);
v4l2_device_unregister(&mdp->v4l2_dev);
dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
}
static int __maybe_unused mdp_suspend(struct device *dev)
{
struct mdp_dev *mdp = dev_get_drvdata(dev);
int ret;
atomic_set(&mdp->suspended, 1);
if (refcount_read(&mdp->job_count)) {
ret = wait_event_timeout(mdp->callback_wq,
!refcount_read(&mdp->job_count),
2 * HZ);
if (ret == 0) {
dev_err(dev,
"%s:flushed cmdq task incomplete, count=%d\n",
__func__, refcount_read(&mdp->job_count));
return -EBUSY;
}
}
return 0;
}
static int __maybe_unused mdp_resume(struct device *dev)
{
struct mdp_dev *mdp = dev_get_drvdata(dev);
atomic_set(&mdp->suspended, 0);
return 0;
}
static const struct dev_pm_ops mdp_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(mdp_suspend, mdp_resume)
};
static struct platform_driver mdp_driver = {
.probe = mdp_probe,
.remove_new = mdp_remove,
.driver = {
.name = MDP_MODULE_NAME,
.pm = &mdp_pm_ops,
.of_match_table = mdp_of_ids,
},
};
module_platform_driver(mdp_driver);
MODULE_AUTHOR("Ping-Hsun Wu <[email protected]>");
MODULE_DESCRIPTION("MediaTek image processor 3 driver");
MODULE_LICENSE("GPL");
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