39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
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/*
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* Copyright (c) 2024 hydrogenium2020-offical
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* Copyright (c) 2018 naehrwert
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* Copyright (c) 2020 CTCaer
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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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#include "types.h"
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#include "i2c.h"
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void i2c_init(u32 i2c_idx)
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{
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vu32 *base = (vu32 *)(I2C_BASE + (u32)_i2c_base_offsets[i2c_idx]);
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base[I2C_CLK_DIVISOR] = (5 << 16) | 1; // SF mode Div: 6, HS mode div: 2.
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base[I2C_BUS_CLEAR_CONFIG] = (9 << 16) | BC_TERMINATE | BC_ENABLE;
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// Load configuration.
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_i2c_load_cfg_wait(base);
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for (u32 i = 0; i < 10; i++)
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{
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if (base[I2C_INT_STATUS] & BUS_CLEAR_DONE)
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break;
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usleep(25);
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}
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(vu32)base[I2C_BUS_CLEAR_STATUS];
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base[I2C_INT_STATUS] = base[I2C_INT_STATUS];
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}
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