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/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#define pr_fmt(fmt) "sde-kms_utils:[%s] " fmt, __func__
#include "sde_kms.h"
void sde_kms_info_reset(struct sde_kms_info *info)
{
if (info) {
info->len = 0;
info->staged_len = 0;
}
}
void sde_kms_info_add_keyint(struct sde_kms_info *info,
const char *key,
int32_t value)
{
uint32_t len;
if (info && key) {
len = snprintf(info->data + info->len,
SDE_KMS_INFO_MAX_SIZE - info->len,
"%s=%d\n",
key,
value);
/* check if snprintf truncated the string */
if ((info->len + len) < SDE_KMS_INFO_MAX_SIZE)
info->len += len;
}
}
void sde_kms_info_add_keystr(struct sde_kms_info *info,
const char *key,
const char *value)
{
uint32_t len;
if (info && key && value) {
len = snprintf(info->data + info->len,
SDE_KMS_INFO_MAX_SIZE - info->len,
"%s=%s\n",
key,
value);
/* check if snprintf truncated the string */
if ((info->len + len) < SDE_KMS_INFO_MAX_SIZE)
info->len += len;
}
}
void sde_kms_info_start(struct sde_kms_info *info,
const char *key)
{
uint32_t len;
if (info && key) {
len = snprintf(info->data + info->len,
SDE_KMS_INFO_MAX_SIZE - info->len,
"%s=",
key);
info->start = true;
/* check if snprintf truncated the string */
if ((info->len + len) < SDE_KMS_INFO_MAX_SIZE)
info->staged_len = info->len + len;
}
}
void sde_kms_info_append(struct sde_kms_info *info,
const char *str)
{
uint32_t len;
if (info) {
len = snprintf(info->data + info->staged_len,
SDE_KMS_INFO_MAX_SIZE - info->staged_len,
"%s",
str);
/* check if snprintf truncated the string */
if ((info->staged_len + len) < SDE_KMS_INFO_MAX_SIZE) {
info->staged_len += len;
info->start = false;
}
}
}
void sde_kms_info_append_format(struct sde_kms_info *info,
uint32_t pixel_format,
uint64_t modifier)
{
uint32_t len;
if (!info)
return;
if (modifier) {
len = snprintf(info->data + info->staged_len,
SDE_KMS_INFO_MAX_SIZE - info->staged_len,
info->start ?
"%c%c%c%c/%llX/%llX" : " %c%c%c%c/%llX/%llX",
(pixel_format >> 0) & 0xFF,
(pixel_format >> 8) & 0xFF,
(pixel_format >> 16) & 0xFF,
(pixel_format >> 24) & 0xFF,
(modifier >> 56) & 0xFF,
modifier & ((1ULL << 56) - 1));
} else {
len = snprintf(info->data + info->staged_len,
SDE_KMS_INFO_MAX_SIZE - info->staged_len,
info->start ?
"%c%c%c%c" : " %c%c%c%c",
(pixel_format >> 0) & 0xFF,
(pixel_format >> 8) & 0xFF,
(pixel_format >> 16) & 0xFF,
(pixel_format >> 24) & 0xFF);
}
/* check if snprintf truncated the string */
if ((info->staged_len + len) < SDE_KMS_INFO_MAX_SIZE) {
info->staged_len += len;
info->start = false;
}
}
void sde_kms_info_stop(struct sde_kms_info *info)
{
uint32_t len;
if (info) {
/* insert final delimiter */
len = snprintf(info->data + info->staged_len,
SDE_KMS_INFO_MAX_SIZE - info->staged_len,
"\n");
/* check if snprintf truncated the string */
if ((info->staged_len + len) < SDE_KMS_INFO_MAX_SIZE)
info->len = info->staged_len + len;
}
}
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