![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
Fix this bug: drivers/media/platform/mtk-vcodec/vdec_drv_if.c:38 vdec_if_init() info: ignoring unreachable code. With is indeed a real problem that prevents the driver to work! While here, also remove an used var, as reported by smatch: drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c: In function 'mtk_vcodec_init_dec_pm': drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:29:17: warning: variable 'dev' set but not used [-Wunused-but-set-variable] struct device *dev; ^~~ Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
203 lines
5.3 KiB
C
203 lines
5.3 KiB
C
/*
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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int 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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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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pm->vcodecpll = devm_clk_get(&pdev->dev, "vcodecpll");
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if (IS_ERR(pm->vcodecpll)) {
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mtk_v4l2_err("devm_clk_get vcodecpll fail");
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ret = PTR_ERR(pm->vcodecpll);
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}
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pm->univpll_d2 = devm_clk_get(&pdev->dev, "univpll_d2");
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if (IS_ERR(pm->univpll_d2)) {
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mtk_v4l2_err("devm_clk_get univpll_d2 fail");
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ret = PTR_ERR(pm->univpll_d2);
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}
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pm->clk_cci400_sel = devm_clk_get(&pdev->dev, "clk_cci400_sel");
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if (IS_ERR(pm->clk_cci400_sel)) {
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mtk_v4l2_err("devm_clk_get clk_cci400_sel fail");
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ret = PTR_ERR(pm->clk_cci400_sel);
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}
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pm->vdec_sel = devm_clk_get(&pdev->dev, "vdec_sel");
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if (IS_ERR(pm->vdec_sel)) {
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mtk_v4l2_err("devm_clk_get vdec_sel fail");
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ret = PTR_ERR(pm->vdec_sel);
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}
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pm->vdecpll = devm_clk_get(&pdev->dev, "vdecpll");
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if (IS_ERR(pm->vdecpll)) {
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mtk_v4l2_err("devm_clk_get vdecpll fail");
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ret = PTR_ERR(pm->vdecpll);
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}
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pm->vencpll = devm_clk_get(&pdev->dev, "vencpll");
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if (IS_ERR(pm->vencpll)) {
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mtk_v4l2_err("devm_clk_get vencpll fail");
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ret = PTR_ERR(pm->vencpll);
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}
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pm->venc_lt_sel = devm_clk_get(&pdev->dev, "venc_lt_sel");
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if (IS_ERR(pm->venc_lt_sel)) {
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mtk_v4l2_err("devm_clk_get venc_lt_sel fail");
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ret = PTR_ERR(pm->venc_lt_sel);
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}
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pm->vdec_bus_clk_src = devm_clk_get(&pdev->dev, "vdec_bus_clk_src");
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if (IS_ERR(pm->vdec_bus_clk_src)) {
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mtk_v4l2_err("devm_clk_get vdec_bus_clk_src");
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ret = PTR_ERR(pm->vdec_bus_clk_src);
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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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int ret;
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ret = clk_set_rate(pm->vcodecpll, 1482 * 1000000);
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if (ret)
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mtk_v4l2_err("clk_set_rate vcodecpll fail %d", ret);
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ret = clk_set_rate(pm->vencpll, 800 * 1000000);
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if (ret)
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mtk_v4l2_err("clk_set_rate vencpll fail %d", ret);
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ret = clk_prepare_enable(pm->vcodecpll);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable vcodecpll fail %d", ret);
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ret = clk_prepare_enable(pm->vencpll);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable vencpll fail %d", ret);
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ret = clk_prepare_enable(pm->vdec_bus_clk_src);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable vdec_bus_clk_src fail %d",
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ret);
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ret = clk_prepare_enable(pm->venc_lt_sel);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable venc_lt_sel fail %d", ret);
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ret = clk_set_parent(pm->venc_lt_sel, pm->vdec_bus_clk_src);
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if (ret)
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mtk_v4l2_err("clk_set_parent venc_lt_sel vdec_bus_clk_src fail %d",
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ret);
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ret = clk_prepare_enable(pm->univpll_d2);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable univpll_d2 fail %d", ret);
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ret = clk_prepare_enable(pm->clk_cci400_sel);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable clk_cci400_sel fail %d", ret);
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ret = clk_set_parent(pm->clk_cci400_sel, pm->univpll_d2);
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if (ret)
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mtk_v4l2_err("clk_set_parent clk_cci400_sel univpll_d2 fail %d",
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ret);
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ret = clk_prepare_enable(pm->vdecpll);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable vdecpll fail %d", ret);
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ret = clk_prepare_enable(pm->vdec_sel);
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if (ret)
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mtk_v4l2_err("clk_prepare_enable vdec_sel fail %d", ret);
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ret = clk_set_parent(pm->vdec_sel, pm->vdecpll);
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if (ret)
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mtk_v4l2_err("clk_set_parent vdec_sel vdecpll fail %d", ret);
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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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}
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void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
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{
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mtk_smi_larb_put(pm->larbvdec);
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clk_disable_unprepare(pm->vdec_sel);
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clk_disable_unprepare(pm->vdecpll);
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clk_disable_unprepare(pm->univpll_d2);
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clk_disable_unprepare(pm->clk_cci400_sel);
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clk_disable_unprepare(pm->venc_lt_sel);
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clk_disable_unprepare(pm->vdec_bus_clk_src);
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clk_disable_unprepare(pm->vencpll);
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clk_disable_unprepare(pm->vcodecpll);
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}
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