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[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver 

Add v4l2 layer decoder driver for MT8173

[mchehab@s-opensource.com: make checkpatch.pl happy]

Signed-off-by: Tiffany Lin <tiffany.lin@mediatek.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Tiffany Lin 2016-09-02 09:19:54 -03:00 committed by Mauro Carvalho Chehab
parent f3ad804c9d
commit 590577a4e5
17 changed files with 2883 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/media/platform/mtk-vcodec/Makefile
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@ -1,7 +1,13 @@
obj-$(CONFIG_VIDEO_MEDIATEK_VCODEC) += mtk-vcodec-dec.o \
mtk-vcodec-enc.o \
mtk-vcodec-common.o
obj-$(CONFIG_VIDEO_MEDIATEK_VCODEC) += mtk-vcodec-enc.o mtk-vcodec-common.o
mtk-vcodec-dec-y := mtk_vcodec_dec_drv.o \
vdec_drv_if.o \
vdec_vpu_if.o \
mtk_vcodec_dec.o \
mtk_vcodec_dec_pm.o \
mtk-vcodec-enc-y := venc/venc_vp8_if.o \

1432
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c Normal file
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File diff suppressed because it is too large Load Diff

88
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.h Normal file
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@ -0,0 +1,88 @@
/*
* 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.
*/
#ifndef _MTK_VCODEC_DEC_H_
#define _MTK_VCODEC_DEC_H_
#include <media/videobuf2-core.h>
#include <media/videobuf2-v4l2.h>
#define VCODEC_CAPABILITY_4K_DISABLED 0x10
#define VCODEC_DEC_4K_CODED_WIDTH 4096U
#define VCODEC_DEC_4K_CODED_HEIGHT 2304U
#define MTK_VDEC_MAX_W 2048U
#define MTK_VDEC_MAX_H 1088U
#define MTK_VDEC_IRQ_STATUS_DEC_SUCCESS 0x10000
/**
* struct vdec_fb - decoder frame buffer
* @base_y : Y plane memory info
* @base_c : C plane memory info
* @status : frame buffer status (vdec_fb_status)
*/
struct vdec_fb {
struct mtk_vcodec_mem base_y;
struct mtk_vcodec_mem base_c;
unsigned int status;
};
/**
* struct mtk_video_dec_buf - Private data related to each VB2 buffer.
* @b: VB2 buffer
* @list: link list
* @used: Capture buffer contain decoded frame data and keep in
* codec data structure
* @ready_to_display: Capture buffer not display yet
* @queued_in_vb2: Capture buffer is queue in vb2
* @queued_in_v4l2: Capture buffer is in v4l2 driver, but not in vb2
* queue yet
* @lastframe: Intput buffer is last buffer - EOS
* @frame_buffer: Decode status, and buffer information of Capture buffer
*
* Note : These status information help us track and debug buffer state
*/
struct mtk_video_dec_buf {
struct vb2_v4l2_buffer vb;
struct list_head list;
bool used;
bool ready_to_display;
bool queued_in_vb2;
bool queued_in_v4l2;
bool lastframe;
struct vdec_fb frame_buffer;
};
extern const struct v4l2_ioctl_ops mtk_vdec_ioctl_ops;
extern const struct v4l2_m2m_ops mtk_vdec_m2m_ops;
/*
* mtk_vdec_lock/mtk_vdec_unlock are for ctx instance to
* get/release lock before/after access decoder hw.
* mtk_vdec_lock get decoder hw lock and set curr_ctx
* to ctx instance that get lock
*/
void mtk_vdec_unlock(struct mtk_vcodec_ctx *ctx);
void mtk_vdec_lock(struct mtk_vcodec_ctx *ctx);
int mtk_vcodec_dec_queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq);
void mtk_vcodec_dec_set_default_params(struct mtk_vcodec_ctx *ctx);
void mtk_vcodec_dec_release(struct mtk_vcodec_ctx *ctx);
int mtk_vcodec_dec_ctrls_setup(struct mtk_vcodec_ctx *ctx);
#endif /* _MTK_VCODEC_DEC_H_ */

394
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c Normal file
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@ -0,0 +1,394 @@
/*
* 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/slab.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_dec.h"
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vcodec_intr.h"
#include "mtk_vcodec_util.h"
#include "mtk_vpu.h"
#define VDEC_HW_ACTIVE 0x10
#define VDEC_IRQ_CFG 0x11
#define VDEC_IRQ_CLR 0x10
#define VDEC_IRQ_CFG_REG 0xa4
module_param(mtk_v4l2_dbg_level, int, 0644);
module_param(mtk_vcodec_dbg, bool, 0644);
/* Wake up context wait_queue */
static void wake_up_ctx(struct mtk_vcodec_ctx *ctx)
{
ctx->int_cond = 1;
wake_up_interruptible(&ctx->queue);
}
static irqreturn_t mtk_vcodec_dec_irq_handler(int irq, void *priv)
{
struct mtk_vcodec_dev *dev = priv;
struct mtk_vcodec_ctx *ctx;
u32 cg_status = 0;
unsigned int dec_done_status = 0;
void __iomem *vdec_misc_addr = dev->reg_base[VDEC_MISC] +
VDEC_IRQ_CFG_REG;
ctx = mtk_vcodec_get_curr_ctx(dev);
/* check if HW active or not */
cg_status = readl(dev->reg_base[0]);
if ((cg_status & VDEC_HW_ACTIVE) != 0) {
mtk_v4l2_err("DEC ISR, VDEC active is not 0x0 (0x%08x)",
cg_status);
return IRQ_HANDLED;
}
dec_done_status = readl(vdec_misc_addr);
ctx->irq_status = dec_done_status;
if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
return IRQ_HANDLED;
/* clear interrupt */
writel((readl(vdec_misc_addr) | VDEC_IRQ_CFG),
dev->reg_base[VDEC_MISC] + VDEC_IRQ_CFG_REG);
writel((readl(vdec_misc_addr) & ~VDEC_IRQ_CLR),
dev->reg_base[VDEC_MISC] + VDEC_IRQ_CFG_REG);
wake_up_ctx(ctx);
mtk_v4l2_debug(3,
"mtk_vcodec_dec_irq_handler :wake up ctx %d, dec_done_status=%x",
ctx->id, dec_done_status);
return IRQ_HANDLED;
}
static void mtk_vcodec_dec_reset_handler(void *priv)
{
struct mtk_vcodec_dev *dev = priv;
struct mtk_vcodec_ctx *ctx;
mtk_v4l2_err("Watchdog timeout!!");
mutex_lock(&dev->dev_mutex);
list_for_each_entry(ctx, &dev->ctx_list, list) {
ctx->state = MTK_STATE_ABORT;
mtk_v4l2_debug(0, "[%d] Change to state MTK_STATE_ERROR",
ctx->id);
}
mutex_unlock(&dev->dev_mutex);
}
static int fops_vcodec_open(struct file *file)
{
struct mtk_vcodec_dev *dev = video_drvdata(file);
struct mtk_vcodec_ctx *ctx = NULL;
int ret = 0;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
mutex_lock(&dev->dev_mutex);
ctx->id = dev->id_counter++;
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
INIT_LIST_HEAD(&ctx->list);
ctx->dev = dev;
init_waitqueue_head(&ctx->queue);
mutex_init(&ctx->lock);
ctx->type = MTK_INST_DECODER;
ret = mtk_vcodec_dec_ctrls_setup(ctx);
if (ret) {
mtk_v4l2_err("Failed to setup mt vcodec controls");
goto err_ctrls_setup;
}
ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev_dec, ctx,
&mtk_vcodec_dec_queue_init);
if (IS_ERR((__force void *)ctx->m2m_ctx)) {
ret = PTR_ERR((__force void *)ctx->m2m_ctx);
mtk_v4l2_err("Failed to v4l2_m2m_ctx_init() (%d)",
ret);
goto err_m2m_ctx_init;
}
mtk_vcodec_dec_set_default_params(ctx);
if (v4l2_fh_is_singular(&ctx->fh)) {
mtk_vcodec_dec_pw_on(&dev->pm);
/*
* vpu_load_firmware checks if it was loaded already and
* does nothing in that case
*/
ret = vpu_load_firmware(dev->vpu_plat_dev);
if (ret < 0) {
/*
* Return 0 if downloading firmware successfully,
* otherwise it is failed
*/
mtk_v4l2_err("vpu_load_firmware failed!");
goto err_load_fw;
}
dev->dec_capability =
vpu_get_vdec_hw_capa(dev->vpu_plat_dev);
mtk_v4l2_debug(0, "decoder capability %x", dev->dec_capability);
}
list_add(&ctx->list, &dev->ctx_list);
mutex_unlock(&dev->dev_mutex);
mtk_v4l2_debug(0, "%s decoder [%d]", dev_name(&dev->plat_dev->dev),
ctx->id);
return ret;
/* Deinit when failure occurred */
err_load_fw:
v4l2_m2m_ctx_release(ctx->m2m_ctx);
err_m2m_ctx_init:
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
err_ctrls_setup:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
mutex_unlock(&dev->dev_mutex);
return ret;
}
static int fops_vcodec_release(struct file *file)
{
struct mtk_vcodec_dev *dev = video_drvdata(file);
struct mtk_vcodec_ctx *ctx = fh_to_ctx(file->private_data);
mtk_v4l2_debug(0, "[%d] decoder", ctx->id);
mutex_lock(&dev->dev_mutex);
/*
* Call v4l2_m2m_ctx_release before mtk_vcodec_dec_release. First, it
* makes sure the worker thread is not running after vdec_if_deinit.
* Second, the decoder will be flushed and all the buffers will be
* returned in stop_streaming.
*/
v4l2_m2m_ctx_release(ctx->m2m_ctx);
mtk_vcodec_dec_release(ctx);
if (v4l2_fh_is_singular(&ctx->fh))
mtk_vcodec_dec_pw_off(&dev->pm);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
list_del_init(&ctx->list);
kfree(ctx);
mutex_unlock(&dev->dev_mutex);
return 0;
}
static const struct v4l2_file_operations mtk_vcodec_fops = {
.owner = THIS_MODULE,
.open = fops_vcodec_open,
.release = fops_vcodec_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static int mtk_vcodec_probe(struct platform_device *pdev)
{
struct mtk_vcodec_dev *dev;
struct video_device *vfd_dec;
struct resource *res;
int i, ret;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
INIT_LIST_HEAD(&dev->ctx_list);
dev->plat_dev = pdev;
dev->vpu_plat_dev = vpu_get_plat_device(dev->plat_dev);
if (dev->vpu_plat_dev == NULL) {
mtk_v4l2_err("[VPU] vpu device in not ready");
return -EPROBE_DEFER;
}
vpu_wdt_reg_handler(dev->vpu_plat_dev, mtk_vcodec_dec_reset_handler,
dev, VPU_RST_DEC);
ret = mtk_vcodec_init_dec_pm(dev);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to get mt vcodec clock source");
return ret;
}
for (i = 0; i < NUM_MAX_VDEC_REG_BASE; i++) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (res == NULL) {
dev_err(&pdev->dev, "get memory resource failed.");
ret = -ENXIO;
goto err_res;
}
dev->reg_base[i] = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR((__force void *)dev->reg_base[i])) {
ret = PTR_ERR((__force void *)dev->reg_base);
goto err_res;
}
mtk_v4l2_debug(2, "reg[%d] base=%p", i, dev->reg_base[i]);
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
dev_err(&pdev->dev, "failed to get irq resource");
ret = -ENOENT;
goto err_res;
}
dev->dec_irq = platform_get_irq(pdev, 0);
ret = devm_request_irq(&pdev->dev, dev->dec_irq,
mtk_vcodec_dec_irq_handler, 0, pdev->name, dev);
if (ret) {
dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
dev->dec_irq,
ret);
goto err_res;
}
disable_irq(dev->dec_irq);
mutex_init(&dev->dec_mutex);
mutex_init(&dev->dev_mutex);
spin_lock_init(&dev->irqlock);
snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name), "%s",
"[/MTK_V4L2_VDEC]");
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret) {
mtk_v4l2_err("v4l2_device_register err=%d", ret);
goto err_res;
}
init_waitqueue_head(&dev->queue);
vfd_dec = video_device_alloc();
if (!vfd_dec) {
mtk_v4l2_err("Failed to allocate video device");
ret = -ENOMEM;
goto err_dec_alloc;
}
vfd_dec->fops = &mtk_vcodec_fops;
vfd_dec->ioctl_ops = &mtk_vdec_ioctl_ops;
vfd_dec->release = video_device_release;
vfd_dec->lock = &dev->dev_mutex;
vfd_dec->v4l2_dev = &dev->v4l2_dev;
vfd_dec->vfl_dir = VFL_DIR_M2M;
vfd_dec->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE |
V4L2_CAP_STREAMING;
snprintf(vfd_dec->name, sizeof(vfd_dec->name), "%s",
MTK_VCODEC_DEC_NAME);
video_set_drvdata(vfd_dec, dev);
dev->vfd_dec = vfd_dec;
platform_set_drvdata(pdev, dev);
dev->m2m_dev_dec = v4l2_m2m_init(&mtk_vdec_m2m_ops);
if (IS_ERR((__force void *)dev->m2m_dev_dec)) {
mtk_v4l2_err("Failed to init mem2mem dec device");
ret = PTR_ERR((__force void *)dev->m2m_dev_dec);
goto err_dec_mem_init;
}
dev->decode_workqueue =
alloc_ordered_workqueue(MTK_VCODEC_DEC_NAME,
WQ_MEM_RECLAIM | WQ_FREEZABLE);
if (!dev->decode_workqueue) {
mtk_v4l2_err("Failed to create decode workqueue");
ret = -EINVAL;
goto err_event_workq;
}
ret = video_register_device(vfd_dec, VFL_TYPE_GRABBER, 0);
if (ret) {
mtk_v4l2_err("Failed to register video device");
goto err_dec_reg;
}
mtk_v4l2_debug(0, "decoder registered as /dev/video%d",
vfd_dec->num);
return 0;
err_dec_reg:
destroy_workqueue(dev->decode_workqueue);
err_event_workq:
v4l2_m2m_release(dev->m2m_dev_dec);
err_dec_mem_init:
video_unregister_device(vfd_dec);
err_dec_alloc:
v4l2_device_unregister(&dev->v4l2_dev);
err_res:
mtk_vcodec_release_dec_pm(dev);
return ret;
}
static const struct of_device_id mtk_vcodec_match[] = {
{.compatible = "mediatek,mt8173-vcodec-dec",},
{},
};
MODULE_DEVICE_TABLE(of, mtk_vcodec_match);
static int mtk_vcodec_dec_remove(struct platform_device *pdev)
{
struct mtk_vcodec_dev *dev = platform_get_drvdata(pdev);
flush_workqueue(dev->decode_workqueue);
destroy_workqueue(dev->decode_workqueue);
if (dev->m2m_dev_dec)
v4l2_m2m_release(dev->m2m_dev_dec);
if (dev->vfd_dec)
video_unregister_device(dev->vfd_dec);
v4l2_device_unregister(&dev->v4l2_dev);
mtk_vcodec_release_dec_pm(dev);
return 0;
}
static struct platform_driver mtk_vcodec_dec_driver = {
.probe = mtk_vcodec_probe,
.remove = mtk_vcodec_dec_remove,
.driver = {
.name = MTK_VCODEC_DEC_NAME,
.of_match_table = mtk_vcodec_match,
},
};
module_platform_driver(mtk_vcodec_dec_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Mediatek video codec V4L2 decoder driver");

204
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c Normal file
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@ -0,0 +1,204 @@
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: 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/clk.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <soc/mediatek/smi.h>
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vcodec_util.h"
#include "mtk_vpu.h"
int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev)
{
struct device_node *node;
struct platform_device *pdev;
struct device *dev;
struct mtk_vcodec_pm *pm;
int ret = 0;
pdev = mtkdev->plat_dev;
pm = &mtkdev->pm;
pm->mtkdev = mtkdev;
dev = &pdev->dev;
node = of_parse_phandle(pdev->dev.of_node, "mediatek,larb", 0);
if (!node) {
mtk_v4l2_err("of_parse_phandle mediatek,larb fail!");
return -1;
}
pdev = of_find_device_by_node(node);
if (WARN_ON(!pdev)) {
of_node_put(node);
return -1;
}
pm->larbvdec = &pdev->dev;
pdev = mtkdev->plat_dev;
pm->dev = &pdev->dev;
pm->vcodecpll = devm_clk_get(&pdev->dev, "vcodecpll");
if (IS_ERR(pm->vcodecpll)) {
mtk_v4l2_err("devm_clk_get vcodecpll fail");
ret = PTR_ERR(pm->vcodecpll);
}
pm->univpll_d2 = devm_clk_get(&pdev->dev, "univpll_d2");
if (IS_ERR(pm->univpll_d2)) {
mtk_v4l2_err("devm_clk_get univpll_d2 fail");
ret = PTR_ERR(pm->univpll_d2);
}
pm->clk_cci400_sel = devm_clk_get(&pdev->dev, "clk_cci400_sel");
if (IS_ERR(pm->clk_cci400_sel)) {
mtk_v4l2_err("devm_clk_get clk_cci400_sel fail");
ret = PTR_ERR(pm->clk_cci400_sel);
}
pm->vdec_sel = devm_clk_get(&pdev->dev, "vdec_sel");
if (IS_ERR(pm->vdec_sel)) {
mtk_v4l2_err("devm_clk_get vdec_sel fail");
ret = PTR_ERR(pm->vdec_sel);
}
pm->vdecpll = devm_clk_get(&pdev->dev, "vdecpll");
if (IS_ERR(pm->vdecpll)) {
mtk_v4l2_err("devm_clk_get vdecpll fail");
ret = PTR_ERR(pm->vdecpll);
}
pm->vencpll = devm_clk_get(&pdev->dev, "vencpll");
if (IS_ERR(pm->vencpll)) {
mtk_v4l2_err("devm_clk_get vencpll fail");
ret = PTR_ERR(pm->vencpll);
}
pm->venc_lt_sel = devm_clk_get(&pdev->dev, "venc_lt_sel");
if (IS_ERR(pm->venc_lt_sel)) {
mtk_v4l2_err("devm_clk_get venc_lt_sel fail");
ret = PTR_ERR(pm->venc_lt_sel);
}
pm->vdec_bus_clk_src = devm_clk_get(&pdev->dev, "vdec_bus_clk_src");
if (IS_ERR(pm->vdec_bus_clk_src)) {
mtk_v4l2_err("devm_clk_get vdec_bus_clk_src");
ret = PTR_ERR(pm->vdec_bus_clk_src);
}
pm_runtime_enable(&pdev->dev);
return ret;
}
void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev)
{
pm_runtime_disable(dev->pm.dev);
}
void mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm)
{
int ret;
ret = pm_runtime_get_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_get_sync fail %d", ret);
}
void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm)
{
int ret;
ret = pm_runtime_put_sync(pm->dev);
if (ret)
mtk_v4l2_err("pm_runtime_put_sync fail %d", ret);
}
void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm)
{
int ret;
ret = clk_set_rate(pm->vcodecpll, 1482 * 1000000);
if (ret)
mtk_v4l2_err("clk_set_rate vcodecpll fail %d", ret);
ret = clk_set_rate(pm->vencpll, 800 * 1000000);
if (ret)
mtk_v4l2_err("clk_set_rate vencpll fail %d", ret);
ret = clk_prepare_enable(pm->vcodecpll);
if (ret)
mtk_v4l2_err("clk_prepare_enable vcodecpll fail %d", ret);
ret = clk_prepare_enable(pm->vencpll);
if (ret)
mtk_v4l2_err("clk_prepare_enable vencpll fail %d", ret);
ret = clk_prepare_enable(pm->vdec_bus_clk_src);
if (ret)
mtk_v4l2_err("clk_prepare_enable vdec_bus_clk_src fail %d",
ret);
ret = clk_prepare_enable(pm->venc_lt_sel);
if (ret)
mtk_v4l2_err("clk_prepare_enable venc_lt_sel fail %d", ret);
ret = clk_set_parent(pm->venc_lt_sel, pm->vdec_bus_clk_src);
if (ret)
mtk_v4l2_err("clk_set_parent venc_lt_sel vdec_bus_clk_src fail %d",
ret);
ret = clk_prepare_enable(pm->univpll_d2);
if (ret)
mtk_v4l2_err("clk_prepare_enable univpll_d2 fail %d", ret);
ret = clk_prepare_enable(pm->clk_cci400_sel);
if (ret)
mtk_v4l2_err("clk_prepare_enable clk_cci400_sel fail %d", ret);
ret = clk_set_parent(pm->clk_cci400_sel, pm->univpll_d2);
if (ret)
mtk_v4l2_err("clk_set_parent clk_cci400_sel univpll_d2 fail %d",
ret);
ret = clk_prepare_enable(pm->vdecpll);
if (ret)
mtk_v4l2_err("clk_prepare_enable vdecpll fail %d", ret);
ret = clk_prepare_enable(pm->vdec_sel);
if (ret)
mtk_v4l2_err("clk_prepare_enable vdec_sel fail %d", ret);
ret = clk_set_parent(pm->vdec_sel, pm->vdecpll);
if (ret)
mtk_v4l2_err("clk_set_parent vdec_sel vdecpll fail %d", ret);
ret = mtk_smi_larb_get(pm->larbvdec);
if (ret)
mtk_v4l2_err("mtk_smi_larb_get larbvdec fail %d", ret);
}
void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm)
{
mtk_smi_larb_put(pm->larbvdec);
clk_disable_unprepare(pm->vdec_sel);
clk_disable_unprepare(pm->vdecpll);
clk_disable_unprepare(pm->univpll_d2);
clk_disable_unprepare(pm->clk_cci400_sel);
clk_disable_unprepare(pm->venc_lt_sel);
clk_disable_unprepare(pm->vdec_bus_clk_src);
clk_disable_unprepare(pm->vencpll);
clk_disable_unprepare(pm->vcodecpll);
}

28
drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.h Normal file
View File

@ -0,0 +1,28 @@
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: 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.
*/
#ifndef _MTK_VCODEC_DEC_PM_H_
#define _MTK_VCODEC_DEC_PM_H_
#include "mtk_vcodec_drv.h"
int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *dev);
void mtk_vcodec_release_dec_pm(struct mtk_vcodec_dev *dev);
void mtk_vcodec_dec_pw_on(struct mtk_vcodec_pm *pm);
void mtk_vcodec_dec_pw_off(struct mtk_vcodec_pm *pm);
void mtk_vcodec_dec_clock_on(struct mtk_vcodec_pm *pm);
void mtk_vcodec_dec_clock_off(struct mtk_vcodec_pm *pm);
#endif /* _MTK_VCODEC_DEC_PM_H_ */

62
drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
View File

@ -22,13 +22,13 @@
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#include "mtk_vcodec_util.h"
#define MTK_VCODEC_DRV_NAME "mtk_vcodec_drv"
#define MTK_VCODEC_DEC_NAME "mtk-vcodec-dec"
#define MTK_VCODEC_ENC_NAME "mtk-vcodec-enc"
#define MTK_PLATFORM_STR "platform:mt8173"
#define MTK_VCODEC_MAX_PLANES 3
#define MTK_V4L2_BENCHMARK 0
#define WAIT_INTR_TIMEOUT_MS 1000
@ -179,6 +179,9 @@ struct mtk_enc_params {
* struct mtk_vcodec_pm - Power management data structure
*/
struct mtk_vcodec_pm {
struct clk *vdec_bus_clk_src;
struct clk *vencpll;
struct clk *vcodecpll;
struct clk *univpll_d2;
struct clk *clk_cci400_sel;
@ -195,6 +198,32 @@ struct mtk_vcodec_pm {
struct mtk_vcodec_dev *mtkdev;
};
/**
* struct vdec_pic_info - picture size information
* @pic_w: picture width
* @pic_h: picture height
* @buf_w: picture buffer width (64 aligned up from pic_w)
* @buf_h: picture buffer heiht (64 aligned up from pic_h)
* @y_bs_sz: Y bitstream size
* @c_bs_sz: CbCr bitstream size
* @y_len_sz: additional size required to store decompress information for y
* plane
* @c_len_sz: additional size required to store decompress information for cbcr
* plane
* E.g. suppose picture size is 176x144,
* buffer size will be aligned to 176x160.
*/
struct vdec_pic_info {
unsigned int pic_w;
unsigned int pic_h;
unsigned int buf_w;
unsigned int buf_h;
unsigned int y_bs_sz;
unsigned int c_bs_sz;
unsigned int y_len_sz;
unsigned int c_len_sz;
};
/**
* struct mtk_vcodec_ctx - Context (instance) private data.
*
@ -209,9 +238,12 @@ struct mtk_vcodec_pm {
* @state: state of the context
* @param_change: indicate encode parameter type
* @enc_params: encoding parameters
* @dec_if: hooked decoder driver interface
* @enc_if: hoooked encoder driver interface
* @drv_handle: driver handle for specific decode/encode instance
*
* @picinfo: store picture info after header parsing
* @dpb_size: store dpb count after header parsing
* @int_cond: variable used by the waitqueue
* @int_type: type of the last interrupt
* @queue: waitqueue that can be used to wait for this context to
@ -219,12 +251,16 @@ struct mtk_vcodec_pm {
* @irq_status: irq status
*
* @ctrl_hdl: handler for v4l2 framework
* @decode_work: worker for the decoding
* @encode_work: worker for the encoding
* @last_decoded_picinfo: pic information get from latest decode
*
* @colorspace: enum v4l2_colorspace; supplemental to pixelformat
* @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
* @quantization: enum v4l2_quantization, colorspace quantization
* @xfer_func: enum v4l2_xfer_func, colorspace transfer function
* @lock: protect variables accessed by V4L2 threads and worker thread such as
* mtk_video_dec_buf.
*/
struct mtk_vcodec_ctx {
enum mtk_instance_type type;
@ -239,28 +275,40 @@ struct mtk_vcodec_ctx {
enum mtk_encode_param param_change;
struct mtk_enc_params enc_params;
const struct vdec_common_if *dec_if;
const struct venc_common_if *enc_if;
unsigned long drv_handle;
struct vdec_pic_info picinfo;
int dpb_size;
int int_cond;
int int_type;
wait_queue_head_t queue;
unsigned int irq_status;
struct v4l2_ctrl_handler ctrl_hdl;
struct work_struct decode_work;
struct work_struct encode_work;
struct vdec_pic_info last_decoded_picinfo;
enum v4l2_colorspace colorspace;
enum v4l2_ycbcr_encoding ycbcr_enc;
enum v4l2_quantization quantization;
enum v4l2_xfer_func xfer_func;
int decoded_frame_cnt;
struct mutex lock;
};
/**
* struct mtk_vcodec_dev - driver data
* @v4l2_dev: V4L2 device to register video devices for.
* @vfd_dec: Video device for decoder
* @vfd_enc: Video device for encoder.
*
* @m2m_dev_dec: m2m device for decoder
* @m2m_dev_enc: m2m device for encoder.
* @plat_dev: platform device
* @vpu_plat_dev: mtk vpu platform device
@ -271,7 +319,6 @@ struct mtk_vcodec_ctx {
* @reg_base: Mapped address of MTK Vcodec registers.
*
* @id_counter: used to identify current opened instance
* @num_instances: counter of active MTK Vcodec instances
*
* @encode_workqueue: encode work queue
*
@ -280,9 +327,11 @@ struct mtk_vcodec_ctx {
* @dev_mutex: video_device lock
* @queue: waitqueue for waiting for completion of device commands
*
* @dec_irq: decoder irq resource
* @enc_irq: h264 encoder irq resource
* @enc_lt_irq: vp8 encoder irq resource
*
* @dec_mutex: decoder hardware lock
* @enc_mutex: encoder hardware lock.
*
* @pm: power management control
@ -291,8 +340,10 @@ struct mtk_vcodec_ctx {
*/
struct mtk_vcodec_dev {
struct v4l2_device v4l2_dev;
struct video_device *vfd_dec;
struct video_device *vfd_enc;
struct v4l2_m2m_dev *m2m_dev_dec;
struct v4l2_m2m_dev *m2m_dev_enc;
struct platform_device *plat_dev;
struct platform_device *vpu_plat_dev;
@ -302,18 +353,19 @@ struct mtk_vcodec_dev {
void __iomem *reg_base[NUM_MAX_VCODEC_REG_BASE];
unsigned long id_counter;
int num_instances;
struct workqueue_struct *decode_workqueue;
struct workqueue_struct *encode_workqueue;
int int_cond;
int int_type;
struct mutex dev_mutex;
wait_queue_head_t queue;
int dec_irq;
int enc_irq;
int enc_lt_irq;
struct mutex dec_mutex;
struct mutex enc_mutex;
struct mtk_vcodec_pm pm;

8
drivers/media/platform/mtk-vcodec/mtk_vcodec_enc_drv.c
View File

@ -188,7 +188,6 @@ static int fops_vcodec_open(struct file *file)
mtk_v4l2_debug(2, "Create instance [%d]@%p m2m_ctx=%p ",
ctx->id, ctx, ctx->m2m_ctx);
dev->num_instances++;
list_add(&ctx->list, &dev->ctx_list);
mutex_unlock(&dev->dev_mutex);
@ -218,18 +217,13 @@ static int fops_vcodec_release(struct file *file)
mtk_v4l2_debug(1, "[%d] encoder", ctx->id);
mutex_lock(&dev->dev_mutex);
/*
* Call v4l2_m2m_ctx_release to make sure the worker thread is not
* running after venc_if_deinit.
*/
v4l2_m2m_ctx_release(ctx->m2m_ctx);
mtk_vcodec_enc_release(ctx);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
v4l2_ctrl_handler_free(&ctx->ctrl_hdl);
v4l2_m2m_ctx_release(ctx->m2m_ctx);
list_del_init(&ctx->list);
dev->num_instances--;
kfree(ctx);
mutex_unlock(&dev->dev_mutex);
return 0;

3
drivers/media/platform/mtk-vcodec/mtk_vcodec_intr.c
View File

@ -30,8 +30,7 @@ int mtk_vcodec_wait_for_done_ctx(struct mtk_vcodec_ctx *ctx, int command,
timeout_jiff = msecs_to_jiffies(timeout_ms);
ret = wait_event_interruptible_timeout(*waitqueue,
(ctx->int_cond &&
(ctx->int_type == command)),
ctx->int_cond,
timeout_jiff);
if (!ret) {

33
drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
View File

@ -81,14 +81,37 @@ void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
return;
}
dma_free_coherent(dev, size, mem->va, mem->dma_addr);
mem->va = NULL;
mem->dma_addr = 0;
mem->size = 0;
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);

5
drivers/media/platform/mtk-vcodec/mtk_vcodec_util.h
View File

@ -26,6 +26,7 @@ struct mtk_vcodec_mem {
};
struct mtk_vcodec_ctx;
struct mtk_vcodec_dev;
extern int mtk_v4l2_dbg_level;
extern bool mtk_vcodec_dbg;
@ -84,4 +85,8 @@ int mtk_vcodec_mem_alloc(struct mtk_vcodec_ctx *data,
struct mtk_vcodec_mem *mem);
void mtk_vcodec_mem_free(struct mtk_vcodec_ctx *data,
struct mtk_vcodec_mem *mem);
void mtk_vcodec_set_curr_ctx(struct mtk_vcodec_dev *dev,
struct mtk_vcodec_ctx *ctx);
struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev);
#endif /* _MTK_VCODEC_UTIL_H_ */

55
drivers/media/platform/mtk-vcodec/vdec_drv_base.h Normal file
View File

@ -0,0 +1,55 @@
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@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.
*/
#ifndef _VDEC_DRV_BASE_
#define _VDEC_DRV_BASE_
#include "mtk_vcodec_drv.h"
struct vdec_common_if {
/**
* (*init)() - initialize decode driver
* @ctx : [in] mtk v4l2 context
* @h_vdec : [out] driver handle
*/
int (*init)(struct mtk_vcodec_ctx *ctx, unsigned long *h_vdec);
/**
* (*decode)() - trigger decode
* @h_vdec : [in] driver handle
* @bs : [in] input bitstream
* @fb : [in] frame buffer to store decoded frame
* @res_chg : [out] resolution change happen
*/
int (*decode)(unsigned long h_vdec, struct mtk_vcodec_mem *bs,
struct vdec_fb *fb, bool *res_chg);
/**
* (*get_param)() - get driver's parameter
* @h_vdec : [in] driver handle
* @type : [in] input parameter type
* @out : [out] buffer to store query result
*/
int (*get_param)(unsigned long h_vdec, enum vdec_get_param_type type,
void *out);
/**
* (*deinit)() - deinitialize driver.
* @h_vdec : [in] driver handle to be deinit
*/
void (*deinit)(unsigned long h_vdec);
};
#endif

112
drivers/media/platform/mtk-vcodec/vdec_drv_if.c Normal file
View File

@ -0,0 +1,112 @@
/*
* 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/interrupt.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include "vdec_drv_if.h"
#include "mtk_vcodec_dec.h"
#include "vdec_drv_base.h"
#include "mtk_vcodec_dec_pm.h"
#include "mtk_vpu.h"
int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
{
int ret = 0;
switch (fourcc) {
case V4L2_PIX_FMT_H264:
case V4L2_PIX_FMT_VP8:
default:
return -EINVAL;
}
mtk_vdec_lock(ctx);
mtk_vcodec_dec_clock_on(&ctx->dev->pm);
ret = ctx->dec_if->init(ctx, &ctx->drv_handle);
mtk_vcodec_dec_clock_off(&ctx->dev->pm);
mtk_vdec_unlock(ctx);
return ret;
}
int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
struct vdec_fb *fb, bool *res_chg)
{
int ret = 0;
if (bs) {
if ((bs->dma_addr & 63) != 0) {
mtk_v4l2_err("bs dma_addr should 64 byte align");
return -EINVAL;
}
}
if (fb) {
if (((fb->base_y.dma_addr & 511) != 0) ||
((fb->base_c.dma_addr & 511) != 0)) {
mtk_v4l2_err("frame buffer dma_addr should 512 byte align");
return -EINVAL;
}
}
if (ctx->drv_handle == 0)
return -EIO;
mtk_vdec_lock(ctx);
mtk_vcodec_set_curr_ctx(ctx->dev, ctx);
mtk_vcodec_dec_clock_on(&ctx->dev->pm);
enable_irq(ctx->dev->dec_irq);
ret = ctx->dec_if->decode(ctx->drv_handle, bs, fb, res_chg);
disable_irq(ctx->dev->dec_irq);
mtk_vcodec_dec_clock_off(&ctx->dev->pm);
mtk_vcodec_set_curr_ctx(ctx->dev, NULL);
mtk_vdec_unlock(ctx);
return ret;
}
int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
void *out)
{
int ret = 0;
if (ctx->drv_handle == 0)
return -EIO;
mtk_vdec_lock(ctx);
ret = ctx->dec_if->get_param(ctx->drv_handle, type, out);
mtk_vdec_unlock(ctx);
return ret;
}
void vdec_if_deinit(struct mtk_vcodec_ctx *ctx)
{
if (ctx->drv_handle == 0)
return;
mtk_vdec_lock(ctx);
mtk_vcodec_dec_clock_on(&ctx->dev->pm);
ctx->dec_if->deinit(ctx->drv_handle);
mtk_vcodec_dec_clock_off(&ctx->dev->pm);
mtk_vdec_unlock(ctx);
ctx->drv_handle = 0;
}

101
drivers/media/platform/mtk-vcodec/vdec_drv_if.h Normal file
View File

@ -0,0 +1,101 @@
/*
* 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.
*/
#ifndef _VDEC_DRV_IF_H_
#define _VDEC_DRV_IF_H_
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_dec.h"
#include "mtk_vcodec_util.h"
/**
* struct vdec_fb_status - decoder frame buffer status
* @FB_ST_NORMAL : initial state
* @FB_ST_DISPLAY : frmae buffer is ready to be displayed
* @FB_ST_FREE : frame buffer is not used by decoder any more
*/
enum vdec_fb_status {
FB_ST_NORMAL = 0,
FB_ST_DISPLAY = (1 << 0),
FB_ST_FREE = (1 << 1)
};
/* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER,
* the caller does not own the returned buffer. The buffer will not be
* released before vdec_if_deinit.
* GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer,
* struct vdec_fb**
* GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb**
* GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info*
* GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop*
* GET_PARAM_DPB_SIZE : get dpb size, unsigned int*
*/
enum vdec_get_param_type {
GET_PARAM_DISP_FRAME_BUFFER,
GET_PARAM_FREE_FRAME_BUFFER,
GET_PARAM_PIC_INFO,
GET_PARAM_CROP_INFO,
GET_PARAM_DPB_SIZE
};
/**
* struct vdec_fb_node - decoder frame buffer node
* @list : list to hold this node
* @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and
* working buffer this is for maintain buffers in different state
*/
struct vdec_fb_node {
struct list_head list;
struct vdec_fb *fb;
};
/**
* vdec_if_init() - initialize decode driver
* @ctx : [in] v4l2 context
* @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9..
*/
int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc);
/**
* vdec_if_deinit() - deinitialize decode driver
* @ctx : [in] v4l2 context
*
*/
void vdec_if_deinit(struct mtk_vcodec_ctx *ctx);
/**
* vdec_if_decode() - trigger decode
* @ctx : [in] v4l2 context
* @bs : [in] input bitstream
* @fb : [in] frame buffer to store decoded frame, when null menas parse
* header only
* @res_chg : [out] resolution change happens if current bs have different
* picture width/height
* Note: To flush the decoder when reaching EOF, set input bitstream as NULL.
*/
int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
struct vdec_fb *fb, bool *res_chg);
/**
* vdec_if_get_param() - get driver's parameter
* @ctx : [in] v4l2 context
* @type : [in] input parameter type
* @out : [out] buffer to store query result
*/
int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
void *out);
#endif

103
drivers/media/platform/mtk-vcodec/vdec_ipi_msg.h Normal file
View File

@ -0,0 +1,103 @@
/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@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.
*/
#ifndef _VDEC_IPI_MSG_H_
#define _VDEC_IPI_MSG_H_
/**
* enum vdec_ipi_msgid - message id between AP and VPU
* @AP_IPIMSG_XXX : AP to VPU cmd message id
* @VPU_IPIMSG_XXX_ACK : VPU ack AP cmd message id
*/
enum vdec_ipi_msgid {
AP_IPIMSG_DEC_INIT = 0xA000,
AP_IPIMSG_DEC_START = 0xA001,
AP_IPIMSG_DEC_END = 0xA002,
AP_IPIMSG_DEC_DEINIT = 0xA003,
AP_IPIMSG_DEC_RESET = 0xA004,
VPU_IPIMSG_DEC_INIT_ACK = 0xB000,
VPU_IPIMSG_DEC_START_ACK = 0xB001,
VPU_IPIMSG_DEC_END_ACK = 0xB002,
VPU_IPIMSG_DEC_DEINIT_ACK = 0xB003,
VPU_IPIMSG_DEC_RESET_ACK = 0xB004,
};
/**
* struct vdec_ap_ipi_cmd - generic AP to VPU ipi command format
* @msg_id : vdec_ipi_msgid
* @vpu_inst_addr : VPU decoder instance address
*/
struct vdec_ap_ipi_cmd {
uint32_t msg_id;
uint32_t vpu_inst_addr;
};
/**
* struct vdec_vpu_ipi_ack - generic VPU to AP ipi command format
* @msg_id : vdec_ipi_msgid
* @status : VPU exeuction result
* @ap_inst_addr : AP video decoder instance address
*/
struct vdec_vpu_ipi_ack {
uint32_t msg_id;
int32_t status;
uint64_t ap_inst_addr;
};
/**
* struct vdec_ap_ipi_init - for AP_IPIMSG_DEC_INIT
* @msg_id : AP_IPIMSG_DEC_INIT
* @reserved : Reserved field
* @ap_inst_addr : AP video decoder instance address
*/
struct vdec_ap_ipi_init {
uint32_t msg_id;
uint32_t reserved;
uint64_t ap_inst_addr;
};
/**
* struct vdec_ap_ipi_dec_start - for AP_IPIMSG_DEC_START
* @msg_id : AP_IPIMSG_DEC_START
* @vpu_inst_addr : VPU decoder instance address
* @data : Header info
* H264 decoder [0]:buf_sz [1]:nal_start
* VP8 decoder [0]:width/height
* VP9 decoder [0]:profile, [1][2] width/height
* @reserved : Reserved field
*/
struct vdec_ap_ipi_dec_start {
uint32_t msg_id;
uint32_t vpu_inst_addr;
uint32_t data[3];
uint32_t reserved;
};
/**
* struct vdec_vpu_ipi_init_ack - for VPU_IPIMSG_DEC_INIT_ACK
* @msg_id : VPU_IPIMSG_DEC_INIT_ACK
* @status : VPU exeuction result
* @ap_inst_addr : AP vcodec_vpu_inst instance address
* @vpu_inst_addr : VPU decoder instance address
*/
struct vdec_vpu_ipi_init_ack {
uint32_t msg_id;
int32_t status;
uint64_t ap_inst_addr;
uint32_t vpu_inst_addr;
};
#endif

170
drivers/media/platform/mtk-vcodec/vdec_vpu_if.c Normal file
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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@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 "mtk_vcodec_drv.h"
#include "mtk_vcodec_util.h"
#include "vdec_ipi_msg.h"
#include "vdec_vpu_if.h"
static void handle_init_ack_msg(struct vdec_vpu_ipi_init_ack *msg)
{
struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
(unsigned long)msg->ap_inst_addr;
mtk_vcodec_debug(vpu, "+ ap_inst_addr = 0x%llx", msg->ap_inst_addr);
/* mapping VPU address to kernel virtual address */
/* the content in vsi is initialized to 0 in VPU */
vpu->vsi = vpu_mapping_dm_addr(vpu->dev, msg->vpu_inst_addr);
vpu->inst_addr = msg->vpu_inst_addr;
mtk_vcodec_debug(vpu, "- vpu_inst_addr = 0x%x", vpu->inst_addr);
}
/*
* This function runs in interrupt context and it means there's an IPI MSG
* from VPU.
*/
void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv)
{
struct vdec_vpu_ipi_ack *msg = data;
struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
(unsigned long)msg->ap_inst_addr;
mtk_vcodec_debug(vpu, "+ id=%X", msg->msg_id);
if (msg->status == 0) {
switch (msg->msg_id) {
case VPU_IPIMSG_DEC_INIT_ACK:
handle_init_ack_msg(data);
break;
case VPU_IPIMSG_DEC_START_ACK:
case VPU_IPIMSG_DEC_END_ACK:
case VPU_IPIMSG_DEC_DEINIT_ACK:
case VPU_IPIMSG_DEC_RESET_ACK:
break;
default:
mtk_vcodec_err(vpu, "invalid msg=%X", msg->msg_id);
break;
}
}
mtk_vcodec_debug(vpu, "- id=%X", msg->msg_id);
vpu->failure = msg->status;
vpu->signaled = 1;
}
static int vcodec_vpu_send_msg(struct vdec_vpu_inst *vpu, void *msg, int len)
{
int err;
uint32_t msg_id = *(uint32_t *)msg;
mtk_vcodec_debug(vpu, "id=%X", msg_id);
vpu->failure = 0;
vpu->signaled = 0;
err = vpu_ipi_send(vpu->dev, vpu->id, msg, len);
if (err) {
mtk_vcodec_err(vpu, "send fail vpu_id=%d msg_id=%X status=%d",
vpu->id, msg_id, err);
return err;
}
return vpu->failure;
}
static int vcodec_send_ap_ipi(struct vdec_vpu_inst *vpu, unsigned int msg_id)
{
struct vdec_ap_ipi_cmd msg;
int err = 0;
mtk_vcodec_debug(vpu, "+ id=%X", msg_id);
memset(&msg, 0, sizeof(msg));
msg.msg_id = msg_id;
msg.vpu_inst_addr = vpu->inst_addr;
err = vcodec_vpu_send_msg(vpu, &msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- id=%X ret=%d", msg_id, err);
return err;
}
int vpu_dec_init(struct vdec_vpu_inst *vpu)
{
struct vdec_ap_ipi_init msg;
int err;
mtk_vcodec_debug_enter(vpu);
init_waitqueue_head(&vpu->wq);
err = vpu_ipi_register(vpu->dev, vpu->id, vpu->handler, "vdec", NULL);
if (err != 0) {
mtk_vcodec_err(vpu, "vpu_ipi_register fail status=%d", err);
return err;
}
memset(&msg, 0, sizeof(msg));
msg.msg_id = AP_IPIMSG_DEC_INIT;
msg.ap_inst_addr = (unsigned long)vpu;
mtk_vcodec_debug(vpu, "vdec_inst=%p", vpu);
err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- ret=%d", err);
return err;
}
int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len)
{
struct vdec_ap_ipi_dec_start msg;
int i;
int err = 0;
mtk_vcodec_debug_enter(vpu);
if (len > ARRAY_SIZE(msg.data)) {
mtk_vcodec_err(vpu, "invalid len = %d\n", len);
return -EINVAL;
}
memset(&msg, 0, sizeof(msg));
msg.msg_id = AP_IPIMSG_DEC_START;
msg.vpu_inst_addr = vpu->inst_addr;
for (i = 0; i < len; i++)
msg.data[i] = data[i];
err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- ret=%d", err);
return err;
}
int vpu_dec_end(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_END);
}
int vpu_dec_deinit(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_DEINIT);
}
int vpu_dec_reset(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_RESET);
}

96
drivers/media/platform/mtk-vcodec/vdec_vpu_if.h Normal file
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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@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.
*/
#ifndef _VDEC_VPU_IF_H_
#define _VDEC_VPU_IF_H_
#include "mtk_vpu.h"
/**
* struct vdec_vpu_inst - VPU instance for video codec
* @ipi_id : ipi id for each decoder
* @vsi : driver structure allocated by VPU side and shared to AP side
* for control and info share
* @failure : VPU execution result status, 0: success, others: fail
* @inst_addr : VPU decoder instance address
* @signaled : 1 - Host has received ack message from VPU, 0 - not received
* @ctx : context for v4l2 layer integration
* @dev : platform device of VPU
* @wq : wait queue to wait VPU message ack
* @handler : ipi handler for each decoder
*/
struct vdec_vpu_inst {
enum ipi_id id;
void *vsi;
int32_t failure;
uint32_t inst_addr;
unsigned int signaled;
struct mtk_vcodec_ctx *ctx;
struct platform_device *dev;
wait_queue_head_t wq;
ipi_handler_t handler;
};
/**
* vpu_dec_init - init decoder instance and allocate required resource in VPU.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_init(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_start - start decoding, basically the function will be invoked once
* every frame.
*
* @vpu : instance for vdec_vpu_inst
* @data: meta data to pass bitstream info to VPU decoder
* @len : meta data length
*/
int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len);
/**
* vpu_dec_end - end decoding, basically the function will be invoked once
* when HW decoding done interrupt received successfully. The
* decoder in VPU will continute to do referene frame management
* and check if there is a new decoded frame available to display.
*
* @vpu : instance for vdec_vpu_inst
*/
int vpu_dec_end(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_deinit - deinit decoder instance and resource freed in VPU.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_deinit(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_reset - reset decoder, use for flush decoder when end of stream or
* seek. Remainig non displayed frame will be pushed to display.
*
* @vpu: instance for vdec_vpu_inst
*/
int vpu_dec_reset(struct vdec_vpu_inst *vpu);
/**
* vpu_dec_ipi_handler - Handler for VPU ipi message.
*
* @data: ipi message
* @len : length of ipi message
* @priv: callback private data which is passed by decoder when register.
*/
void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv);
#endif