Revert "hocclk: add watchdog"
This watchdog prevents fatal errors which are *kinda* important.
This reverts commit c9e9b87bd0.
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c9e9b87bd0
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@@ -1,106 +0,0 @@
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/*
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*
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* Copyright (c) Souldbminer, Lightos_ and Horizon OC Contributors
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "max77620_wdt.hpp"
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/* PMIC Registers */
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#define MAX77620_REG_CNFGGLBL2 ((u8)0x01)
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#define MAX77620_REG_CNFGGLBL3 ((u8)0x02)
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#define MAX77620_REG_ONOFFCNFG2 ((u8)0x42)
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/* CNFGGLBL2 bits */
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#define MAX77620_WDTOFFC ((u8)(1u << 4)) /* WDT clear in OFF mode */
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#define MAX77620_WDTSLPC ((u8)(1u << 3)) /* WDT clear in sleep mode */
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#define MAX77620_WDTEN ((u8)(1u << 2)) /* WDT enabled */
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/* Watchdog timeout period (CNFGGLBL2[1:0]) */
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#define MAX77620_TWD_MASK ((u8)0x03)
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#define MAX77620_TWD_2s ((u8)0x00)
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#define MAX77620_TWD_16s ((u8)0x01)
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#define MAX77620_TWD_64s ((u8)0x02)
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#define MAX77620_TWD_128s ((u8)0x03)
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/* CNFGGLBL3 watchdog-clear field (WDTC[1:0]). Writing 0x1 disables WDT. */
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#define MAX77620_WDTC_MASK ((u8)0x03)
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#define MAX77620_WDTC_KICK ((u8)0x01)
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/* ONOFFCNFG2 bits */
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#define MAX77620_ONOFFCNFG2_WD_RST_WK ((u8)(1u << 6))
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/* Is this a watchdog or a watchcat, that is the question */
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namespace i2c::wdt {
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static Result update_bits(u8 reg, u8 mask, u8 val) {
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u8 cur;
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Result rc;
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rc = I2cRead_OutU8(I2cDevice_Max77620Pmic, reg, &cur);
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if (R_FAILED(rc))
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return rc;
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cur = (u8)((cur & (u8)~mask) | (val & mask));
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return I2cSet_U8(I2cDevice_Max77620Pmic, reg, cur);
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}
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void Arm(max77620_wdt_time_t timeout) {
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Result rc;
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u8 twd;
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if ((int)timeout < (int)MAX77620_WDT_2S || (int)timeout > (int)MAX77620_WDT_128S)
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return;
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twd = (u8)timeout;
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/* WDT expiry results in a restart */
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rc = update_bits(MAX77620_REG_ONOFFCNFG2,
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MAX77620_ONOFFCNFG2_WD_RST_WK,
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MAX77620_ONOFFCNFG2_WD_RST_WK);
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ASSERT_RESULT_OK(rc, "update_bits");
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/* Clear WDT in OFF and sleep modes. */
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rc = update_bits(MAX77620_REG_CNFGGLBL2,
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(u8)(MAX77620_WDTOFFC | MAX77620_WDTSLPC),
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(u8)(MAX77620_WDTOFFC | MAX77620_WDTSLPC));
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ASSERT_RESULT_OK(rc, "update_bits");
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/* Do what the kernel dows */
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rc = update_bits(MAX77620_REG_CNFGGLBL3,
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MAX77620_WDTC_MASK, MAX77620_WDTC_KICK);
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ASSERT_RESULT_OK(rc, "update_bits");
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/* Program the period. */
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rc = update_bits(MAX77620_REG_CNFGGLBL2, MAX77620_TWD_MASK, twd);
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ASSERT_RESULT_OK(rc, "update_bits");
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/* Enable. */
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rc = update_bits(MAX77620_REG_CNFGGLBL2, MAX77620_WDTEN, MAX77620_WDTEN);
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ASSERT_RESULT_OK(rc, "update_bits");
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}
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void Disarm() {
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Result rc = update_bits(MAX77620_REG_CNFGGLBL2, MAX77620_WDTEN, (u8)0x00);
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ASSERT_RESULT_OK(rc, "update_bits");
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}
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void Pet() {
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Result rc = update_bits(MAX77620_REG_CNFGGLBL3, MAX77620_WDTC_MASK, MAX77620_WDTC_KICK);
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ASSERT_RESULT_OK(rc, "update_bits");
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}
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} // namespace pwr::wdt
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@@ -1,37 +0,0 @@
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/*
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* Copyright (c) Souldbminer, Lightos_ and Horizon OC Contributors
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <hocclk.h>
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#include <switch.h>
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#include "i2cDrv.h"
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#include "../file/errors.hpp"
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namespace i2c::wdt {
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typedef enum {
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MAX77620_WDT_2S = 0, /* ~2 seconds */
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MAX77620_WDT_16S = 1, /* ~16 seconds */
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MAX77620_WDT_64S = 2, /* ~64 seconds */
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MAX77620_WDT_128S = 3, /* ~128 seconds */
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} max77620_wdt_time_t;
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void Arm(max77620_wdt_time_t timeout);
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void Disarm();
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void Pet();
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} // namespace pwr::wdt
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