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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: Tiffany Lin <tiffany.lin@mediatek.com>
*/
#include <linux/clk.h>
#include <linux/interrupt.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include "mtk_vcodec_dec_hw.h"
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vcodec_util.h"
int mtk_vcodec_init_dec_clk(struct platform_device *pdev, struct mtk_vcodec_pm *pm)
{
struct mtk_vcodec_clk *dec_clk;
struct mtk_vcodec_clk_info *clk_info;
int i = 0, ret;
dec_clk = &pm->vdec_clk;
pm->dev = &pdev->dev;
dec_clk->clk_num =
of_property_count_strings(pdev->dev.of_node, "clock-names");
if (dec_clk->clk_num > 0) {
dec_clk->clk_info = devm_kcalloc(&pdev->dev,
dec_clk->clk_num, sizeof(*clk_info),
GFP_KERNEL);
if (!dec_clk->clk_info)
return -ENOMEM;
} else {
mtk_v4l2_err("Failed to get vdec clock count");
return -EINVAL;
}
for (i = 0; i < dec_clk->clk_num; i++) {
clk_info = &dec_clk->clk_info[i];
ret = of_property_read_string_index(pdev->dev.of_node,
"clock-names", i, &clk_info->clk_name);
if (ret) {
mtk_v4l2_err("Failed to get clock name id = %d", i);
return ret;
}
clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
clk_info->clk_name);
if (IS_ERR(clk_info->vcodec_clk)) {
mtk_v4l2_err("devm_clk_get (%d)%s fail", i,
clk_info->clk_name);
return PTR_ERR(clk_info->vcodec_clk);
}
}
return 0;
}
EXPORT_SYMBOL_GPL(mtk_vcodec_init_dec_clk);
int mtk_vcodec_dec_pw_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
struct mtk_vdec_hw_dev *subdev_dev;
struct mtk_vcodec_pm *pm;
int ret;
if (vdec_dev->vdec_pdata->is_subdev_supported) {
subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
if (!subdev_dev) {
mtk_v4l2_err("Failed to get hw dev\n");
return -EINVAL;
}
pm = &subdev_dev->pm;
} else {
pm = &vdec_dev->pm;
}
ret = pm_runtime_resume_and_get(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_resume_and_get fail %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_on);
void mtk_vcodec_dec_pw_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
struct mtk_vdec_hw_dev *subdev_dev;
struct mtk_vcodec_pm *pm;
int ret;
if (vdec_dev->vdec_pdata->is_subdev_supported) {
subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
if (!subdev_dev) {
mtk_v4l2_err("Failed to get hw dev\n");
return;
}
pm = &subdev_dev->pm;
} else {
pm = &vdec_dev->pm;
}
ret = pm_runtime_put_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_pw_off);
void mtk_vcodec_dec_clock_on(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
struct mtk_vdec_hw_dev *subdev_dev;
struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *dec_clk;
int ret, i;
if (vdec_dev->vdec_pdata->is_subdev_supported) {
subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
if (!subdev_dev) {
mtk_v4l2_err("Failed to get hw dev\n");
return;
}
pm = &subdev_dev->pm;
enable_irq(subdev_dev->dec_irq);
} else {
pm = &vdec_dev->pm;
enable_irq(vdec_dev->dec_irq);
}
dec_clk = &pm->vdec_clk;
for (i = 0; i < dec_clk->clk_num; i++) {
ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk);
if (ret) {
mtk_v4l2_err("clk_prepare_enable %d %s fail %d", i,
dec_clk->clk_info[i].clk_name, ret);
goto error;
}
}
return;
error:
for (i -= 1; i >= 0; i--)
clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_on);
void mtk_vcodec_dec_clock_off(struct mtk_vcodec_dev *vdec_dev, int hw_idx)
{
struct mtk_vdec_hw_dev *subdev_dev;
struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *dec_clk;
int i;
if (vdec_dev->vdec_pdata->is_subdev_supported) {
subdev_dev = mtk_vcodec_get_hw_dev(vdec_dev, hw_idx);
if (!subdev_dev) {
mtk_v4l2_err("Failed to get hw dev\n");
return;
}
pm = &subdev_dev->pm;
disable_irq(subdev_dev->dec_irq);
} else {
pm = &vdec_dev->pm;
disable_irq(vdec_dev->dec_irq);
}
dec_clk = &pm->vdec_clk;
for (i = dec_clk->clk_num - 1; i >= 0; i--)
clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dec_clock_off);
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