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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2024 NXP
*/
#include <linux/clk.h>
#include <linux/component.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include "dc-drv.h"
#include "dc-fu.h"
#include "dc-pe.h"
static int dc_pe_bind(struct device *dev, struct device *master, void *data)
{
struct dc_drm_device *dc_drm = data;
struct dc_pe *pe;
int ret;
pe = devm_kzalloc(dev, sizeof(*pe), GFP_KERNEL);
if (!pe)
return -ENOMEM;
pe->clk_axi = devm_clk_get(dev, NULL);
if (IS_ERR(pe->clk_axi))
return dev_err_probe(dev, PTR_ERR(pe->clk_axi),
"failed to get AXI clock\n");
pe->dev = dev;
dev_set_drvdata(dev, pe);
ret = devm_pm_runtime_enable(dev);
if (ret)
return ret;
dc_drm->pe = pe;
return 0;
}
/*
* It's possible to get the child device pointers from the child component
* bind callbacks, but it depends on the component helper behavior to bind
* the pixel engine component first. To avoid the dependency, post bind to
* get the pointers from dc_drm in a safe manner.
*/
void dc_pe_post_bind(struct dc_drm_device *dc_drm)
{
struct dc_pe *pe = dc_drm->pe;
int i;
for (i = 0; i < DC_DISPLAYS; i++) {
pe->cf_safe[i] = dc_drm->cf_safe[i];
pe->cf_cont[i] = dc_drm->cf_cont[i];
pe->ed_safe[i] = dc_drm->ed_safe[i];
pe->ed_cont[i] = dc_drm->ed_cont[i];
}
for (i = 0; i < DC_DISP_FU_CNT; i++)
pe->fu_disp[i] = dc_drm->fu_disp[i];
for (i = 0; i < DC_LB_CNT; i++)
pe->lb[i] = dc_drm->lb[i];
}
static const struct component_ops dc_pe_ops = {
.bind = dc_pe_bind,
};
static int dc_pe_probe(struct platform_device *pdev)
{
int ret;
ret = devm_of_platform_populate(&pdev->dev);
if (ret < 0)
return ret;
ret = component_add(&pdev->dev, &dc_pe_ops);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"failed to add component\n");
return 0;
}
static void dc_pe_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &dc_pe_ops);
}
static int dc_pe_runtime_suspend(struct device *dev)
{
struct dc_pe *pe = dev_get_drvdata(dev);
clk_disable_unprepare(pe->clk_axi);
return 0;
}
static int dc_pe_runtime_resume(struct device *dev)
{
struct dc_pe *pe = dev_get_drvdata(dev);
int i, ret;
ret = clk_prepare_enable(pe->clk_axi);
if (ret) {
dev_err(dev, "failed to enable AXI clock: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(pe->cf_safe); i++)
dc_cf_init(pe->cf_safe[i]);
for (i = 0; i < ARRAY_SIZE(pe->cf_cont); i++)
dc_cf_init(pe->cf_cont[i]);
for (i = 0; i < ARRAY_SIZE(pe->ed_safe); i++)
dc_ed_init(pe->ed_safe[i]);
for (i = 0; i < ARRAY_SIZE(pe->ed_cont); i++)
dc_ed_init(pe->ed_cont[i]);
for (i = 0; i < ARRAY_SIZE(pe->fu_disp); i++)
pe->fu_disp[i]->ops.init(pe->fu_disp[i]);
for (i = 0; i < ARRAY_SIZE(pe->lb); i++)
dc_lb_init(pe->lb[i]);
return 0;
}
static const struct dev_pm_ops dc_pe_pm_ops = {
RUNTIME_PM_OPS(dc_pe_runtime_suspend, dc_pe_runtime_resume, NULL)
};
static const struct of_device_id dc_pe_dt_ids[] = {
{ .compatible = "fsl,imx8qxp-dc-pixel-engine", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dc_pe_dt_ids);
struct platform_driver dc_pe_driver = {
.probe = dc_pe_probe,
.remove = dc_pe_remove,
.driver = {
.name = "imx8-dc-pixel-engine",
.suppress_bind_attrs = true,
.of_match_table = dc_pe_dt_ids,
.pm = pm_sleep_ptr(&dc_pe_pm_ops),
},
};
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