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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/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include "mtk_vcodec_enc_pm.h"
#include "mtk_vcodec_util.h"
int mtk_vcodec_init_enc_clk(struct mtk_vcodec_dev *mtkdev)
{
struct platform_device *pdev;
struct mtk_vcodec_pm *pm;
struct mtk_vcodec_clk *enc_clk;
struct mtk_vcodec_clk_info *clk_info;
int ret, i;
pdev = mtkdev->plat_dev;
pm = &mtkdev->pm;
memset(pm, 0, sizeof(struct mtk_vcodec_pm));
pm->dev = &pdev->dev;
enc_clk = &pm->venc_clk;
enc_clk->clk_num = of_property_count_strings(pdev->dev.of_node,
"clock-names");
if (enc_clk->clk_num > 0) {
enc_clk->clk_info = devm_kcalloc(&pdev->dev,
enc_clk->clk_num, sizeof(*clk_info),
GFP_KERNEL);
if (!enc_clk->clk_info)
return -ENOMEM;
} else {
mtk_v4l2_err("Failed to get venc clock count");
return -EINVAL;
}
for (i = 0; i < enc_clk->clk_num; i++) {
clk_info = &enc_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("venc failed to get clk name %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("venc devm_clk_get (%d)%s fail", i,
clk_info->clk_name);
return PTR_ERR(clk_info->vcodec_clk);
}
}
return 0;
}
void mtk_vcodec_enc_clock_on(struct mtk_vcodec_pm *pm)
{
struct mtk_vcodec_clk *enc_clk = &pm->venc_clk;
int ret, i = 0;
for (i = 0; i < enc_clk->clk_num; i++) {
ret = clk_prepare_enable(enc_clk->clk_info[i].vcodec_clk);
if (ret) {
mtk_v4l2_err("venc clk_prepare_enable %d %s fail %d", i,
enc_clk->clk_info[i].clk_name, ret);
goto clkerr;
}
}
return;
clkerr:
for (i -= 1; i >= 0; i--)
clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
}
void mtk_vcodec_enc_clock_off(struct mtk_vcodec_pm *pm)
{
struct mtk_vcodec_clk *enc_clk = &pm->venc_clk;
int i = 0;
for (i = enc_clk->clk_num - 1; i >= 0; i--)
clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
}
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