#include <linux/clk.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/workqueue.h>
#include "mtk_mdp_core.h"
#include "mtk_mdp_m2m.h"
#include "mtk_vpu.h"
int mtk_mdp_dbg_level;
EXPORT_SYMBOL(mtk_mdp_dbg_level);
module_param(mtk_mdp_dbg_level, int, 0644);
static const struct of_device_id mtk_mdp_comp_dt_ids[] __maybe_unused = {
{
.compatible = "mediatek,mt8173-mdp-rdma",
.data = (void *)MTK_MDP_RDMA
}, {
.compatible = "mediatek,mt8173-mdp-rsz",
.data = (void *)MTK_MDP_RSZ
}, {
.compatible = "mediatek,mt8173-mdp-wdma",
.data = (void *)MTK_MDP_WDMA
}, {
.compatible = "mediatek,mt8173-mdp-wrot",
.data = (void *)MTK_MDP_WROT
},
{ },
};
static const struct of_device_id mtk_mdp_of_ids[] = {
{ .compatible = "mediatek,mt8173-mdp", },
{ },
};
MODULE_DEVICE_TABLE(of, mtk_mdp_of_ids);
static void mtk_mdp_clock_on(struct mtk_mdp_dev *mdp)
{
struct device *dev = &mdp->pdev->dev;
struct mtk_mdp_comp *comp_node;
list_for_each_entry(comp_node, &mdp->comp_list, node)
mtk_mdp_comp_clock_on(dev, comp_node);
}
static void mtk_mdp_clock_off(struct mtk_mdp_dev *mdp)
{
struct device *dev = &mdp->pdev->dev;
struct mtk_mdp_comp *comp_node;
list_for_each_entry(comp_node, &mdp->comp_list, node)
mtk_mdp_comp_clock_off(dev, comp_node);
}
static void mtk_mdp_wdt_worker(struct work_struct *work)
{
struct mtk_mdp_dev *mdp =
container_of(work, struct mtk_mdp_dev, wdt_work);
struct mtk_mdp_ctx *ctx;
mtk_mdp_err("Watchdog timeout");
list_for_each_entry(ctx, &mdp->ctx_list, list) {
mtk_mdp_dbg(0, "[%d] Change as state error", ctx->id);
mtk_mdp_ctx_state_lock_set(ctx, MTK_MDP_CTX_ERROR);
}
}
static void mtk_mdp_reset_handler(void *priv)
{
struct mtk_mdp_dev *mdp = priv;
queue_work(mdp->wdt_wq, &mdp->wdt_work);
}
void mtk_mdp_register_component(struct mtk_mdp_dev *mdp,
struct mtk_mdp_comp *comp)
{
list_add(&comp->node, &mdp->comp_list);
}
void mtk_mdp_unregister_component(struct mtk_mdp_dev *mdp,
struct mtk_mdp_comp *comp)
{
list_del(&comp->node);
}
static int mtk_mdp_probe(struct platform_device *pdev)
{
struct mtk_mdp_dev *mdp;
struct device *dev = &pdev->dev;
struct device_node *node, *parent;
struct mtk_mdp_comp *comp, *comp_temp;
int ret = 0;
mdp = devm_kzalloc(dev, sizeof(*mdp), GFP_KERNEL);
if (!mdp)
return -ENOMEM;
mdp->id = pdev->id;
mdp->pdev = pdev;
INIT_LIST_HEAD(&mdp->comp_list);
INIT_LIST_HEAD(&mdp->ctx_list);
mutex_init(&mdp->lock);
mutex_init(&mdp->vpulock);
node = of_get_next_child(dev->of_node, NULL);
if (node) {
of_node_put(node);
parent = dev->of_node;
dev_warn(dev, "device tree is out of date\n");
} else {
parent = dev->of_node->parent;
}
for_each_child_of_node(parent, node) {
const struct of_device_id *of_id;
enum mtk_mdp_comp_type comp_type;
of_id = of_match_node(mtk_mdp_comp_dt_ids, node);
if (!of_id)
continue;
if (!of_device_is_available(node)) {
dev_err(dev, "Skipping disabled component %pOF\n",
node);
continue;
}
comp_type = (uintptr_t)of_id->data;
comp = devm_kzalloc(dev, sizeof(*comp), GFP_KERNEL);
if (!comp) {
ret = -ENOMEM;
of_node_put(node);
goto err_comp;
}
ret = mtk_mdp_comp_init(dev, node, comp, comp_type);
if (ret) {
of_node_put(node);
goto err_comp;
}
mtk_mdp_register_component(mdp, comp);
}
mdp->job_wq = create_singlethread_workqueue(MTK_MDP_MODULE_NAME);
if (!mdp->job_wq) {
dev_err(&pdev->dev, "unable to alloc job workqueue\n");
ret = -ENOMEM;
goto err_alloc_job_wq;
}
mdp->wdt_wq = create_singlethread_workqueue("mdp_wdt_wq");
if (!mdp->wdt_wq) {
dev_err(&pdev->dev, "unable to alloc wdt workqueue\n");
ret = -ENOMEM;
goto err_alloc_wdt_wq;
}
INIT_WORK(&mdp->wdt_work, mtk_mdp_wdt_worker);
ret = v4l2_device_register(dev, &mdp->v4l2_dev);
if (ret) {
dev_err(&pdev->dev, "Failed to register v4l2 device\n");
ret = -EINVAL;
goto err_dev_register;
}
ret = mtk_mdp_register_m2m_device(mdp);
if (ret) {
v4l2_err(&mdp->v4l2_dev, "Failed to init mem2mem device\n");
goto err_m2m_register;
}
mdp->vpu_dev = vpu_get_plat_device(pdev);
if (!mdp->vpu_dev) {
dev_err(&pdev->dev, "Failed to get vpu device\n");
ret = -ENODEV;
goto err_vpu_get_dev;
}
ret = vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp,
VPU_RST_MDP);
if (ret) {
dev_err(&pdev->dev, "Failed to register reset handler\n");
goto err_reg_handler;
}
platform_set_drvdata(pdev, mdp);
ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "Failed to set vb2 dma mag seg size\n");
goto err_reg_handler;
}
pm_runtime_enable(dev);
dev_dbg(dev, "mdp-%d registered successfully\n", mdp->id);
return 0;
err_reg_handler:
platform_device_put(mdp->vpu_dev);
err_vpu_get_dev:
mtk_mdp_unregister_m2m_device(mdp);
err_m2m_register:
v4l2_device_unregister(&mdp->v4l2_dev);
err_dev_register:
destroy_workqueue(mdp->wdt_wq);
err_alloc_wdt_wq:
destroy_workqueue(mdp->job_wq);
err_alloc_job_wq:
err_comp:
list_for_each_entry_safe(comp, comp_temp, &mdp->comp_list, node) {
mtk_mdp_unregister_component(mdp, comp);
mtk_mdp_comp_deinit(dev, comp);
}
dev_dbg(dev, "err %d\n", ret);
return ret;
}
static void mtk_mdp_remove(struct platform_device *pdev)
{
struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);
struct mtk_mdp_comp *comp, *comp_temp;
pm_runtime_disable(&pdev->dev);
vb2_dma_contig_clear_max_seg_size(&pdev->dev);
platform_device_put(mdp->vpu_dev);
mtk_mdp_unregister_m2m_device(mdp);
v4l2_device_unregister(&mdp->v4l2_dev);
destroy_workqueue(mdp->wdt_wq);
destroy_workqueue(mdp->job_wq);
list_for_each_entry_safe(comp, comp_temp, &mdp->comp_list, node) {
mtk_mdp_unregister_component(mdp, comp);
mtk_mdp_comp_deinit(&pdev->dev, comp);
}
dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
}
static int __maybe_unused mtk_mdp_pm_suspend(struct device *dev)
{
struct mtk_mdp_dev *mdp = dev_get_drvdata(dev);
mtk_mdp_clock_off(mdp);
return 0;
}
static int __maybe_unused mtk_mdp_pm_resume(struct device *dev)
{
struct mtk_mdp_dev *mdp = dev_get_drvdata(dev);
mtk_mdp_clock_on(mdp);
return 0;
}
static int __maybe_unused mtk_mdp_suspend(struct device *dev)
{
if (pm_runtime_suspended(dev))
return 0;
return mtk_mdp_pm_suspend(dev);
}
static int __maybe_unused mtk_mdp_resume(struct device *dev)
{
if (pm_runtime_suspended(dev))
return 0;
return mtk_mdp_pm_resume(dev);
}
static const struct dev_pm_ops mtk_mdp_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(mtk_mdp_suspend, mtk_mdp_resume)
SET_RUNTIME_PM_OPS(mtk_mdp_pm_suspend, mtk_mdp_pm_resume, NULL)
};
static struct platform_driver mtk_mdp_driver = {
.probe = mtk_mdp_probe,
.remove = mtk_mdp_remove,
.driver = {
.name = MTK_MDP_MODULE_NAME,
.pm = &mtk_mdp_pm_ops,
.of_match_table = mtk_mdp_of_ids,
}
};
module_platform_driver(mtk_mdp_driver);
MODULE_AUTHOR("Houlong Wei <houlong.wei@mediatek.com>");
MODULE_DESCRIPTION("Mediatek image processor driver");
MODULE_LICENSE("GPL v2");
