@@ -52,6 +52,23 @@ static void mtk_vdec_dbgfs_get_format_type(struct mtk_vcodec_ctx *ctx, char *buf
*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)
{
@@ -83,6 +100,11 @@ static ssize_t mtk_vdec_dbgfs_read(struct file *filp, char __user *ubuf,
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;
@@ -109,7 +131,7 @@ static ssize_t mtk_vdec_dbgfs_read(struct file *filp, char __user *ubuf,
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;