| /* |
| * Copyright (c) 2016 MediaTek Inc. |
| * Author: PC Chen <pc.chen@mediatek.com> |
| * Tiffany Lin <tiffany.lin@mediatek.com> |
| * |
| * 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. |
| */ |
| |
| #include <linux/module.h> |
| |
| #include "mtk_vcodec_drv.h" |
| #include "mtk_vcodec_util.h" |
| #include "mtk_vpu.h" |
| |
| /* For encoder, this will enable logs in venc/*/ |
| bool mtk_vcodec_dbg; |
| EXPORT_SYMBOL(mtk_vcodec_dbg); |
| |
| /* The log level of v4l2 encoder or decoder driver. |
| * That is, files under mtk-vcodec/. |
| */ |
| int mtk_v4l2_dbg_level; |
| EXPORT_SYMBOL(mtk_v4l2_dbg_level); |
| |
| void __iomem *mtk_vcodec_get_reg_addr(struct mtk_vcodec_ctx *data, |
| unsigned int reg_idx) |
| { |
| struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data; |
| |
| if (!data || reg_idx >= NUM_MAX_VCODEC_REG_BASE) { |
| mtk_v4l2_err("Invalid arguments, reg_idx=%d", reg_idx); |
| return NULL; |
| } |
| return ctx->dev->reg_base[reg_idx]; |
| } |
| EXPORT_SYMBOL(mtk_vcodec_get_reg_addr); |
| |
| int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data, |
| struct mtk_vcodec_mem *mem) |
| { |
| unsigned long size = mem->size; |
| struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data; |
| struct device *dev = &ctx->dev->plat_dev->dev; |
| |
| mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL); |
| if (!mem->va) { |
| mtk_v4l2_err("%s dma_alloc size=%ld failed!", dev_name(dev), |
| size); |
| return -ENOMEM; |
| } |
| |
| mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va); |
| mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id, |
| (unsigned long)mem->dma_addr); |
| mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(mtk_vcodec_mem_alloc); |
| |
| void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data, |
| struct mtk_vcodec_mem *mem) |
| { |
| unsigned long size = mem->size; |
| struct mtk_vcodec_ctx *ctx = (struct mtk_vcodec_ctx *)data; |
| struct device *dev = &ctx->dev->plat_dev->dev; |
| |
| if (!mem->va) { |
| mtk_v4l2_err("%s dma_free size=%ld failed!", dev_name(dev), |
| size); |
| return; |
| } |
| |
| mtk_v4l2_debug(3, "[%d] - va = %p", ctx->id, mem->va); |
| mtk_v4l2_debug(3, "[%d] - dma = 0x%lx", ctx->id, |
| (unsigned long)mem->dma_addr); |
| mtk_v4l2_debug(3, "[%d] size = 0x%lx", ctx->id, size); |
| |
| dma_free_coherent(dev, size, mem->va, mem->dma_addr); |
| mem->va = NULL; |
| mem->dma_addr = 0; |
| mem->size = 0; |
| } |
| EXPORT_SYMBOL(mtk_vcodec_mem_free); |
| |
| void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev, |
| struct mtk_vcodec_ctx *ctx) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&dev->irqlock, flags); |
| dev->curr_ctx = ctx; |
| spin_unlock_irqrestore(&dev->irqlock, flags); |
| } |
| EXPORT_SYMBOL(mtk_vcodec_set_curr_ctx); |
| |
| struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev) |
| { |
| unsigned long flags; |
| struct mtk_vcodec_ctx *ctx; |
| |
| spin_lock_irqsave(&dev->irqlock, flags); |
| ctx = dev->curr_ctx; |
| spin_unlock_irqrestore(&dev->irqlock, flags); |
| return ctx; |
| } |
| EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx); |
| |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("Mediatek video codec driver"); |