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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2023 MediaTek Inc.
* Author: Yunfei Dong <yunfei.dong@mediatek.com>
*/
#include <linux/debugfs.h>
#include "mtk_vcodec_dbgfs.h"
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_util.h"
static void mtk_vdec_dbgfs_get_format_type(struct mtk_vcodec_ctx *ctx, char *buf,
int *used, int total)
{
int curr_len;
switch (ctx->current_codec) {
case V4L2_PIX_FMT_H264_SLICE:
curr_len = snprintf(buf + *used, total - *used,
"\toutput format: h264 slice\n");
break;
case V4L2_PIX_FMT_VP8_FRAME:
curr_len = snprintf(buf + *used, total - *used,
"\toutput format: vp8 slice\n");
break;
case V4L2_PIX_FMT_VP9_FRAME:
curr_len = snprintf(buf + *used, total - *used,
"\toutput format: vp9 slice\n");
break;
default:
curr_len = snprintf(buf + *used, total - *used,
"\tunsupported output format: 0x%x\n",
ctx->current_codec);
}
*used += curr_len;
switch (ctx->capture_fourcc) {
case V4L2_PIX_FMT_MM21:
curr_len = snprintf(buf + *used, total - *used,
"\tcapture format: MM21\n");
break;
case V4L2_PIX_FMT_MT21C:
curr_len = snprintf(buf + *used, total - *used,
"\tcapture format: MT21C\n");
break;
default:
curr_len = snprintf(buf + *used, total - *used,
"\tunsupported capture format: 0x%x\n",
ctx->capture_fourcc);
}
*used += curr_len;
}
static void mtk_vdec_dbgfs_get_help(char *buf, int *used, int total)
{
int curr_len;
curr_len = snprintf(buf + *used, total - *used,
"help: (1: echo -'info' > vdec 2: cat vdec)\n");
*used += curr_len;
curr_len = snprintf(buf + *used, total - *used,
"\t-picinfo: get resolution\n");
*used += curr_len;
curr_len = snprintf(buf + *used, total - *used,
"\t-format: get output & capture queue format\n");
*used += curr_len;
}
static ssize_t mtk_vdec_dbgfs_write(struct file *filp, const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct mtk_vcodec_dev *vcodec_dev = filp->private_data;
struct mtk_vcodec_dbgfs *dbgfs = &vcodec_dev->dbgfs;
mutex_lock(&dbgfs->dbgfs_lock);
dbgfs->buf_size = simple_write_to_buffer(dbgfs->dbgfs_buf, sizeof(dbgfs->dbgfs_buf),
ppos, ubuf, count);
mutex_unlock(&dbgfs->dbgfs_lock);
if (dbgfs->buf_size > 0)
return count;
return dbgfs->buf_size;
}
static ssize_t mtk_vdec_dbgfs_read(struct file *filp, char __user *ubuf,
size_t count, loff_t *ppos)
{
struct mtk_vcodec_dev *vcodec_dev = filp->private_data;
struct mtk_vcodec_dbgfs *dbgfs = &vcodec_dev->dbgfs;
struct mtk_vcodec_dbgfs_inst *dbgfs_inst;
struct mtk_vcodec_ctx *ctx;
int total_len = 200 * (dbgfs->inst_count == 0 ? 1 : dbgfs->inst_count);
int used_len = 0, curr_len, ret;
bool dbgfs_index[MTK_VDEC_DBGFS_MAX] = {0};
char *buf = kmalloc(total_len, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (strstr(dbgfs->dbgfs_buf, "-help") || dbgfs->buf_size == 1) {
mtk_vdec_dbgfs_get_help(buf, &used_len, total_len);
goto read_buffer;
}
if (strstr(dbgfs->dbgfs_buf, "-picinfo"))
dbgfs_index[MTK_VDEC_DBGFS_PICINFO] = true;
if (strstr(dbgfs->dbgfs_buf, "-format"))
dbgfs_index[MTK_VDEC_DBGFS_FORMAT] = true;
mutex_lock(&dbgfs->dbgfs_lock);
list_for_each_entry(dbgfs_inst, &dbgfs->dbgfs_head, node) {
ctx = dbgfs_inst->vcodec_ctx;
curr_len = snprintf(buf + used_len, total_len - used_len,
"inst[%d]:\n ", ctx->id);
used_len += curr_len;
if (dbgfs_index[MTK_VDEC_DBGFS_PICINFO]) {
curr_len = snprintf(buf + used_len, total_len - used_len,
"\treal(%dx%d)=>align(%dx%d)\n",
ctx->picinfo.pic_w, ctx->picinfo.pic_h,
ctx->picinfo.buf_w, ctx->picinfo.buf_h);
used_len += curr_len;
}
if (dbgfs_index[MTK_VDEC_DBGFS_FORMAT])
mtk_vdec_dbgfs_get_format_type(ctx, buf, &used_len, total_len);
}
mutex_unlock(&dbgfs->dbgfs_lock);
read_buffer:
ret = simple_read_from_buffer(ubuf, count, ppos, buf, used_len);
kfree(buf);
return ret;
}
static const struct file_operations vdec_fops = {
.open = simple_open,
.write = mtk_vdec_dbgfs_write,
.read = mtk_vdec_dbgfs_read,
};
void mtk_vcodec_dbgfs_create(struct mtk_vcodec_ctx *ctx)
{
struct mtk_vcodec_dbgfs_inst *dbgfs_inst;
struct mtk_vcodec_dev *vcodec_dev = ctx->dev;
dbgfs_inst = kzalloc(sizeof(*dbgfs_inst), GFP_KERNEL);
if (!dbgfs_inst)
return;
list_add_tail(&dbgfs_inst->node, &vcodec_dev->dbgfs.dbgfs_head);
vcodec_dev->dbgfs.inst_count++;
dbgfs_inst->inst_id = ctx->id;
dbgfs_inst->vcodec_ctx = ctx;
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_create);
void mtk_vcodec_dbgfs_remove(struct mtk_vcodec_dev *vcodec_dev, int ctx_id)
{
struct mtk_vcodec_dbgfs_inst *dbgfs_inst;
list_for_each_entry(dbgfs_inst, &vcodec_dev->dbgfs.dbgfs_head, node) {
if (dbgfs_inst->inst_id == ctx_id) {
vcodec_dev->dbgfs.inst_count--;
break;
}
}
if (dbgfs_inst) {
list_del(&dbgfs_inst->node);
kfree(dbgfs_inst);
}
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_remove);
void mtk_vcodec_dbgfs_init(struct mtk_vcodec_dev *vcodec_dev, bool is_encode)
{
struct dentry *vcodec_root;
if (is_encode)
vcodec_dev->dbgfs.vcodec_root = debugfs_create_dir("vcodec-enc", NULL);
else
vcodec_dev->dbgfs.vcodec_root = debugfs_create_dir("vcodec-dec", NULL);
if (IS_ERR(vcodec_dev->dbgfs.vcodec_root))
dev_err(&vcodec_dev->plat_dev->dev, "create vcodec dir err:%d\n",
IS_ERR(vcodec_dev->dbgfs.vcodec_root));
vcodec_root = vcodec_dev->dbgfs.vcodec_root;
debugfs_create_x32("mtk_v4l2_dbg_level", 0644, vcodec_root, &mtk_v4l2_dbg_level);
debugfs_create_x32("mtk_vcodec_dbg", 0644, vcodec_root, &mtk_vcodec_dbg);
vcodec_dev->dbgfs.inst_count = 0;
if (is_encode)
return;
INIT_LIST_HEAD(&vcodec_dev->dbgfs.dbgfs_head);
debugfs_create_file("vdec", 0200, vcodec_root, vcodec_dev, &vdec_fops);
mutex_init(&vcodec_dev->dbgfs.dbgfs_lock);
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_init);
void mtk_vcodec_dbgfs_deinit(struct mtk_vcodec_dev *vcodec_dev)
{
debugfs_remove_recursive(vcodec_dev->dbgfs.vcodec_root);
}
EXPORT_SYMBOL_GPL(mtk_vcodec_dbgfs_deinit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Mediatek video codec driver");
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