mirror of https://gitee.com/openkylin/linux.git
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: PC Chen <pc.chen@mediatek.com>
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* 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/module.h>
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#include "mtk_vcodec_drv.h"
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#include "mtk_vcodec_util.h"
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#include "mtk_vpu.h"
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/* For encoder, this will enable logs in venc/*/
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bool mtk_vcodec_dbg;
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EXPORT_SYMBOL(mtk_vcodec_dbg);
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/* The log level of v4l2 encoder or decoder driver.
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* That is, files under mtk-vcodec/.
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*/
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int mtk_v4l2_dbg_level;
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EXPORT_SYMBOL(mtk_v4l2_dbg_level);
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void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx *data,
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unsigned int reg_idx)
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{
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struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
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if (!data || reg_idx >= NUM_MAX_VCODEC_REG_BASE) {
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mtk_v4l2_err("Invalid arguments, reg_idx=%d", reg_idx);
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return NULL;
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}
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return ctx->dev->reg_base[reg_idx];
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}
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EXPORT_SYMBOL(mtk_vcodec_get_reg_addr);
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int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
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struct mtk_vcodec_mem *mem)
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{
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unsigned long size = mem->size;
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struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
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struct device *dev = &ctx->dev->plat_dev->dev;
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mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
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if (!mem->va) {
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mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev),
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size);
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return -ENOMEM;
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}
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memset(mem->va, 0, size);
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mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
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mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
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(unsigned long)mem->dma_addr);
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mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
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return 0;
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}
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EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
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void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
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struct mtk_vcodec_mem *mem)
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{
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unsigned long size = mem->size;
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struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data;
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struct device *dev = &ctx->dev->plat_dev->dev;
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if (!mem->va) {
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mtk_v4l2_err("%s dma_free size=%ld failed!", dev_name(dev),
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size);
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return;
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}
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dma_free_coherent(dev, size, mem->va, mem->dma_addr);
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mem->va = NULL;
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mem->dma_addr = 0;
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mem->size = 0;
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mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va);
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mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id,
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(unsigned long)mem->dma_addr);
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mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size);
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}
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EXPORT_SYMBOL(mtk_vcodec_mem_free);
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