threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
157 lines
3.7 KiB
C
157 lines
3.7 KiB
C
/*
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* Copyright (C) 2017 MediaTek Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifdef pr_fmt
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#undef pr_fmt
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#endif
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <linux/types.h>
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#include <linux/kobject.h>
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#include "mt-plat/mtk_thermal_monitor.h"
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#define BACKLIGHT_COOLER_NR 1
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#define MAX_BACKLIGHT_BRIGHTNESS 100
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#define mtk_cooler_backlight_dprintk(fmt, args...) \
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pr_notice("thermal/cooler/backlight " fmt, ##args)
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static struct thermal_cooling_device
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*cl_backlight_dev[BACKLIGHT_COOLER_NR] = { 0 };
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static unsigned int g_cl_id[BACKLIGHT_COOLER_NR];
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static unsigned int g_backlight_level;
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static int mtk_cl_backlight_get_max_state
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(struct thermal_cooling_device *cdev, unsigned long *state)
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{
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*state = MAX_BACKLIGHT_BRIGHTNESS;
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return 0;
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}
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static int mtk_cl_backlight_get_cur_state
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(struct thermal_cooling_device *cdev, unsigned long *state)
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{
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*state = g_backlight_level;
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return 0;
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}
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static int mtk_cl_backlight_set_cur_state
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(struct thermal_cooling_device *cdev, unsigned long state)
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{
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int enable = (state >= MAX_BACKLIGHT_BRIGHTNESS) ? 0 : 1;
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#if !defined(CONFIG_LEDS_MTK_DISP) && \
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!defined(CONFIG_LEDS_MTK_PWM)
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int temp;
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#endif
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state = (state > MAX_BACKLIGHT_BRIGHTNESS)
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? MAX_BACKLIGHT_BRIGHTNESS : state;
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#if defined(CONFIG_LEDS_MTK_DISP) || \
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defined(CONFIG_LEDS_MTK_PWM)
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setMaxBrightness("lcd-backlight", state, enable);
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#else
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temp = state * 255 / 100;
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setMaxbrightness(temp, enable);
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#endif
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g_backlight_level = state;
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mtk_cooler_backlight_dprintk("%s: %d\n", __func__, g_backlight_level);
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return 0;
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}
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static int mtk_cl_backlight_get_available
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(struct thermal_cooling_device *cdev, char *available)
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{
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snprintf(available, 4, "%d\n", MAX_BACKLIGHT_BRIGHTNESS);
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return 0;
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}
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/* bind fan callbacks to fan device */
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static struct thermal_cooling_device_ops mtk_cl_backlight_ops = {
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.get_max_state = mtk_cl_backlight_get_max_state,
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.get_cur_state = mtk_cl_backlight_get_cur_state,
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.set_cur_state = mtk_cl_backlight_set_cur_state,
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.get_available = mtk_cl_backlight_get_available,
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};
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static int mtk_cooler_backlight_register_ltf(void)
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{
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int i;
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mtk_cooler_backlight_dprintk("register ltf\n");
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for (i = 0; i < BACKLIGHT_COOLER_NR; i++) {
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char temp[20] = { 0 };
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sprintf(temp, "mtk-cl-backlight");
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/* /< Cooler Name: mtk-cl-backlight01 */
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g_cl_id[i] = i;
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cl_backlight_dev[i] = mtk_thermal_cooling_device_register
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(temp, (void *)&g_cl_id[i],
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&mtk_cl_backlight_ops);
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}
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return 0;
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}
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static void mtk_cooler_backlight_unregister_ltf(void)
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{
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int i;
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mtk_cooler_backlight_dprintk("unregister ltf\n");
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for (i = 0; i < BACKLIGHT_COOLER_NR; i++) {
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if (cl_backlight_dev[i]) {
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mtk_thermal_cooling_device_unregister
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(cl_backlight_dev[i]);
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cl_backlight_dev[i] = NULL;
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}
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}
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}
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static int __init mtk_cooler_backlight_init(void)
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{
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int err = 0;
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mtk_cooler_backlight_dprintk("init\n");
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g_backlight_level = MAX_BACKLIGHT_BRIGHTNESS;
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err = mtk_cooler_backlight_register_ltf();
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if (err)
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goto err_unreg;
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return 0;
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err_unreg:
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mtk_cooler_backlight_unregister_ltf();
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return err;
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}
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static void __exit mtk_cooler_backlight_exit(void)
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{
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mtk_cooler_backlight_dprintk("exit\n");
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mtk_cooler_backlight_unregister_ltf();
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}
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module_init(mtk_cooler_backlight_init);
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module_exit(mtk_cooler_backlight_exit);
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