1802d0beec
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
138 lines
3.1 KiB
C
138 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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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_dec_pm.h"
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#include "mtk_vcodec_util.h"
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#include "mtk_vpu.h"
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int mtk_vcodec_init_dec_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 *dec_clk;
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struct mtk_vcodec_clk_info *clk_info;
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int i = 0, ret = 0;
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pdev = mtkdev->plat_dev;
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pm = &mtkdev->pm;
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pm->mtkdev = mtkdev;
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dec_clk = &pm->vdec_clk;
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node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
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if (!node) {
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mtk_v4l2_err("of_parse_phandle mediatek,larb fail!");
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return -1;
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}
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pdev = of_find_device_by_node(node);
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if (WARN_ON(!pdev)) {
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of_node_put(node);
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return -1;
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}
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pm->larbvdec = &pdev->dev;
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pdev = mtkdev->plat_dev;
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pm->dev = &pdev->dev;
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dec_clk->clk_num =
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of_property_count_strings(pdev->dev.of_node, "clock-names");
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if (dec_clk->clk_num > 0) {
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dec_clk->clk_info = devm_kcalloc(&pdev->dev,
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dec_clk->clk_num, sizeof(*clk_info),
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GFP_KERNEL);
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if (!dec_clk->clk_info)
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return -ENOMEM;
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} else {
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mtk_v4l2_err("Failed to get vdec clock count");
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return -EINVAL;
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}
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for (i = 0; i < dec_clk->clk_num; i++) {
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clk_info = &dec_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("Failed to get clock name id = %d", i);
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return ret;
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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("devm_clk_get (%d)%s fail", i,
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clk_info->clk_name);
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return PTR_ERR(clk_info->vcodec_clk);
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}
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}
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pm_runtime_enable(&pdev->dev);
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return ret;
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}
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void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
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{
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pm_runtime_disable(dev->pm.dev);
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}
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void mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
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{
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int ret;
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ret = pm_runtime_get_sync(pm->dev);
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if (ret)
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mtk_v4l2_err("pm_runtime_get_sync fail %d", ret);
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}
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void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
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{
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int ret;
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ret = pm_runtime_put_sync(pm->dev);
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if (ret)
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mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
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}
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void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
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{
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struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
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int ret, i = 0;
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for (i = 0; i < dec_clk->clk_num; i++) {
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ret = clk_prepare_enable(dec_clk->clk_info[i].vcodec_clk);
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if (ret) {
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mtk_v4l2_err("clk_prepare_enable %d %s fail %d", i,
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dec_clk->clk_info[i].clk_name, ret);
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goto error;
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}
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}
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ret = mtk_smi_larb_get(pm->larbvdec);
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if (ret) {
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mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
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goto error;
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}
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return;
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error:
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for (i -= 1; i >= 0; i--)
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clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
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}
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void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
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{
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struct mtk_vcodec_clk *dec_clk = &pm->vdec_clk;
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int i = 0;
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mtk_smi_larb_put(pm->larbvdec);
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for (i = dec_clk->clk_num - 1; i >= 0; i--)
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clk_disable_unprepare(dec_clk->clk_info[i].vcodec_clk);
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}
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