83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/mutex.h>
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#include "mtk_drm_arr.h"
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#include "mtk_log.h"
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static DEFINE_MUTEX(cb_table_lock);
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#define DISP_MAX_FPSCHG_CALLBACK 5
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static FPS_CHG_CALLBACK fps_chg_callback_table[DISP_MAX_FPSCHG_CALLBACK];
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/****************ARR function start************************/
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int drm_register_fps_chg_callback(FPS_CHG_CALLBACK fps_chg_cb)
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{
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int ret = 0;
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int i = 0;
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int j = 0;
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mutex_lock(&cb_table_lock);
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for (i = 0; i < DISP_MAX_FPSCHG_CALLBACK; i++) {
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if (fps_chg_callback_table[i] == fps_chg_cb) {
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DDPMSG("[fps]:%s re-register cb\n",
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__func__);
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mutex_unlock(&cb_table_lock);
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return ret;
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}
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}
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for (j = 0; j < DISP_MAX_FPSCHG_CALLBACK; j++) {
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if (fps_chg_callback_table[j] == NULL) {
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fps_chg_callback_table[j] = fps_chg_cb;
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DDPMSG("[fps]: %s, entry[%d] done!\n", __func__, j);
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break;
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}
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}
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if (j == DISP_MAX_FPSCHG_CALLBACK) {
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DDPPR_ERR("[fps]: %s no entries left for new cb!\n", __func__);
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ret = -1;
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}
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mutex_unlock(&cb_table_lock);
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return ret;
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}
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int drm_unregister_fps_chg_callback(FPS_CHG_CALLBACK fps_chg_cb)
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{
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int ret = 0;
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int i = 0;
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mutex_lock(&cb_table_lock);
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for (i = 0; i < DISP_MAX_FPSCHG_CALLBACK; i++) {
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if (fps_chg_callback_table[i] == fps_chg_cb) {
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fps_chg_callback_table[i] = NULL;
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DDPMSG("[fps]: %s, register cb %p\n",
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__func__, fps_chg_cb);
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}
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}
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if (i == DISP_MAX_FPSCHG_CALLBACK) {
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DDPPR_ERR("[fps]: %s, haven't registered cb %p\n",
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__func__, fps_chg_cb);
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ret = -1;
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}
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mutex_unlock(&cb_table_lock);
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return ret;
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}
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void drm_invoke_fps_chg_callbacks(unsigned int new_fps)
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{
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unsigned int i = 0;
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DDPMSG("[fps]: %s,new_fps =%d\n", __func__, new_fps);
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mutex_lock(&cb_table_lock);
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for (i = 0; i < DISP_MAX_FPSCHG_CALLBACK; i++) {
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if (fps_chg_callback_table[i]) {
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fps_chg_callback_table[i](new_fps);
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DDPINFO("%s callback %u\n", __func__, i);
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}
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}
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mutex_unlock(&cb_table_lock);
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}
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