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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include "mtk_mdp_comp.h"
void mtk_mdp_comp_clock_on(struct device *dev, struct mtk_mdp_comp *comp)
{
int i, err;
for (i = 0; i < ARRAY_SIZE(comp->clk); i++) {
if (IS_ERR(comp->clk[i]))
continue;
err = clk_prepare_enable(comp->clk[i]);
if (err)
dev_err(dev,
"failed to enable clock, err %d. type:%d i:%d\n",
err, comp->type, i);
}
}
void mtk_mdp_comp_clock_off(struct device *dev, struct mtk_mdp_comp *comp)
{
int i;
for (i = 0; i < ARRAY_SIZE(comp->clk); i++) {
if (IS_ERR(comp->clk[i]))
continue;
clk_disable_unprepare(comp->clk[i]);
}
}
int mtk_mdp_comp_init(struct device *dev, struct device_node *node,
struct mtk_mdp_comp *comp,
enum mtk_mdp_comp_type comp_type)
{
int ret;
int i;
comp->dev_node = of_node_get(node);
comp->type = comp_type;
for (i = 0; i < ARRAY_SIZE(comp->clk); i++) {
comp->clk[i] = of_clk_get(node, i);
if (IS_ERR(comp->clk[i])) {
if (PTR_ERR(comp->clk[i]) != -EPROBE_DEFER)
dev_err(dev, "Failed to get clock\n");
ret = PTR_ERR(comp->clk[i]);
goto put_dev;
}
/* Only RDMA needs two clocks */
if (comp->type != MTK_MDP_RDMA)
break;
}
return 0;
put_dev:
of_node_put(comp->dev_node);
return ret;
}
void mtk_mdp_comp_deinit(struct device *dev, struct mtk_mdp_comp *comp)
{
of_node_put(comp->dev_node);
}
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