// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: Tiffany Lin <tiffany.lin@mediatek.com>
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*/
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#include <linux/clk.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <linux/pm_runtime.h>
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#include <soc/mediatek/smi.h>
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#include "mtk_vcodec_enc_pm.h"
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#include "mtk_vcodec_util.h"
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int mtk_vcodec_init_enc_pm(struct mtk_vcodec_dev *mtkdev)
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{
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struct device_node *node;
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struct platform_device *pdev;
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struct mtk_vcodec_pm *pm;
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struct mtk_vcodec_clk *enc_clk;
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struct mtk_vcodec_clk_info *clk_info;
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int ret = 0, i = 0;
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struct device *dev;
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pdev = mtkdev->plat_dev;
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pm = &mtkdev->pm;
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memset(pm, 0, sizeof(struct mtk_vcodec_pm));
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pm->mtkdev = mtkdev;
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pm->dev = &pdev->dev;
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dev = &pdev->dev;
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enc_clk = &pm->venc_clk;
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node = of_parse_phandle(dev->of_node, "mediatek,larb", 0);
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if (!node) {
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mtk_v4l2_err("no mediatek,larb found");
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return -ENODEV;
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}
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pdev = of_find_device_by_node(node);
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of_node_put(node);
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if (!pdev) {
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mtk_v4l2_err("no mediatek,larb device found");
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return -ENODEV;
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}
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pm->larbvenc = &pdev->dev;
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node = of_parse_phandle(dev->of_node, "mediatek,larb", 1);
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if (!node) {
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mtk_v4l2_err("no mediatek,larb found");
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ret = -ENODEV;
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goto put_larbvenc;
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}
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pdev = of_find_device_by_node(node);
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of_node_put(node);
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if (!pdev) {
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mtk_v4l2_err("no mediatek,larb device found");
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ret = -ENODEV;
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goto put_larbvenc;
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}
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pm->larbvenclt = &pdev->dev;
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pdev = mtkdev->plat_dev;
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pm->dev = &pdev->dev;
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enc_clk->clk_num = of_property_count_strings(pdev->dev.of_node,
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"clock-names");
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if (enc_clk->clk_num > 0) {
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enc_clk->clk_info = devm_kcalloc(&pdev->dev,
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enc_clk->clk_num, sizeof(*clk_info),
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GFP_KERNEL);
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if (!enc_clk->clk_info) {
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ret = -ENOMEM;
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goto put_larbvenclt;
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}
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} else {
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mtk_v4l2_err("Failed to get venc clock count");
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ret = -EINVAL;
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goto put_larbvenclt;
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}
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for (i = 0; i < enc_clk->clk_num; i++) {
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clk_info = &enc_clk->clk_info[i];
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ret = of_property_read_string_index(pdev->dev.of_node,
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"clock-names", i, &clk_info->clk_name);
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if (ret) {
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mtk_v4l2_err("venc failed to get clk name %d", i);
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goto put_larbvenclt;
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}
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clk_info->vcodec_clk = devm_clk_get(&pdev->dev,
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clk_info->clk_name);
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if (IS_ERR(clk_info->vcodec_clk)) {
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mtk_v4l2_err("venc devm_clk_get (%d)%s fail", i,
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clk_info->clk_name);
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ret = PTR_ERR(clk_info->vcodec_clk);
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goto put_larbvenclt;
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}
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}
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return 0;
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put_larbvenclt:
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put_device(pm->larbvenclt);
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put_larbvenc:
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put_device(pm->larbvenc);
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return ret;
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}
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void mtk_vcodec_release_enc_pm(struct mtk_vcodec_dev *mtkdev)
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{
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}
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void mtk_vcodec_enc_clock_on(struct mtk_vcodec_pm *pm)
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{
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struct mtk_vcodec_clk *enc_clk = &pm->venc_clk;
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int ret, i = 0;
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for (i = 0; i < enc_clk->clk_num; i++) {
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ret = clk_prepare_enable(enc_clk->clk_info[i].vcodec_clk);
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if (ret) {
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mtk_v4l2_err("venc clk_prepare_enable %d %s fail %d", i,
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enc_clk->clk_info[i].clk_name, ret);
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goto clkerr;
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}
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}
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ret = mtk_smi_larb_get(pm->larbvenc);
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if (ret) {
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mtk_v4l2_err("mtk_smi_larb_get larb3 fail %d", ret);
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goto larbvencerr;
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}
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ret = mtk_smi_larb_get(pm->larbvenclt);
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if (ret) {
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mtk_v4l2_err("mtk_smi_larb_get larb4 fail %d", ret);
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goto larbvenclterr;
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}
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return;
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larbvenclterr:
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mtk_smi_larb_put(pm->larbvenc);
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larbvencerr:
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clkerr:
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for (i -= 1; i >= 0; i--)
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clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
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}
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void mtk_vcodec_enc_clock_off(struct mtk_vcodec_pm *pm)
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{
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struct mtk_vcodec_clk *enc_clk = &pm->venc_clk;
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int i = 0;
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mtk_smi_larb_put(pm->larbvenc);
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mtk_smi_larb_put(pm->larbvenclt);
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for (i = enc_clk->clk_num - 1; i >= 0; i--)
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clk_disable_unprepare(enc_clk->clk_info[i].vcodec_clk);
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}
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