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)
147 lines
2.9 KiB
C
147 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2019 MediaTek Inc.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License 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.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/device.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/io.h>
|
|
#include <mt-plat/sync_write.h>
|
|
#include <mt-plat/mtk_io.h>
|
|
|
|
#include <asm/arm_dsu_l3c.h>
|
|
#include "l3c_part.h"
|
|
|
|
static unsigned char init_done;
|
|
static struct platform_driver l3c_part_drv = {
|
|
.driver = {
|
|
.name = "l3c_part_drv",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static ssize_t l3c_part_ctrl_show(struct device_driver *driver, char *buf)
|
|
{
|
|
ssize_t ret;
|
|
|
|
ret = snprintf(buf, PAGE_SIZE, "%s:%x\n%s:%x\n%s:%x\n",
|
|
"CLUSTERPARTCR_EL1", __dsu_l3c_read_partcr(),
|
|
"CLUSTERACPSID_EL1", __dsu_l3c_read_acpsid(),
|
|
"CLUSTERSTASHSID_EL1", __dsu_l3c_read_stashsid());
|
|
|
|
return strlen(buf);
|
|
}
|
|
|
|
static DRIVER_ATTR_RO(l3c_part_ctrl);
|
|
|
|
/*
|
|
* emi_ctrl_init: module init function.
|
|
*/
|
|
static int __init mtk_l3c_part_init(void)
|
|
{
|
|
int ret;
|
|
|
|
__dsu_l3c_write_partcr(0x8F);
|
|
__dsu_l3c_write_acpsid(0x1);
|
|
__dsu_l3c_write_stashsid(0x1);
|
|
|
|
ret = platform_driver_register(&l3c_part_drv);
|
|
if (ret) {
|
|
pr_info("%s: init fail, ret 0x%x\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = driver_create_file(&l3c_part_drv.driver,
|
|
&driver_attr_l3c_part_ctrl);
|
|
if (ret) {
|
|
pr_info("%s: fail to create l3c_part_ctrl\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
init_done = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* mtk_dbgtop_exit: module exit function.
|
|
*/
|
|
static void __exit mtk_l3c_part_exit(void)
|
|
{
|
|
platform_driver_unregister(&l3c_part_drv);
|
|
}
|
|
|
|
int mtk_l3c_set_mcu_part(unsigned int ratio)
|
|
{
|
|
int val_part;
|
|
|
|
if (!init_done)
|
|
return -1;
|
|
|
|
if ((ratio > 4) || (ratio == 0))
|
|
return -1;
|
|
|
|
val_part = __dsu_l3c_read_partcr();
|
|
val_part &= ~0xF;
|
|
val_part |= (1 << ratio) - 1;
|
|
|
|
__dsu_l3c_write_partcr(val_part);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mtk_l3c_set_acp_part(unsigned int ratio)
|
|
{
|
|
int val_part;
|
|
|
|
if (!init_done)
|
|
return -1;
|
|
|
|
if ((ratio > 4) || (ratio == 0))
|
|
return -1;
|
|
|
|
val_part = __dsu_l3c_read_partcr();
|
|
val_part &= ~0xF0;
|
|
val_part |= ((1 << ratio) - 1) << (8 - ratio);
|
|
|
|
__dsu_l3c_write_partcr(val_part);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mtk_l3c_get_part(unsigned int id)
|
|
{
|
|
unsigned int val_part;
|
|
|
|
val_part = __dsu_l3c_read_partcr();
|
|
switch (id) {
|
|
case MTK_L3C_PART_ACP:
|
|
val_part >>= 4;
|
|
case MTK_L3C_PART_MCU:
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return (val_part & 0xF);
|
|
}
|
|
|
|
module_init(mtk_l3c_part_init);
|
|
module_exit(mtk_l3c_part_exit);
|
|
|