| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2013 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| #ifndef __SOC_NVIDIA_TEGRA_I2C_H__ |
| #define __SOC_NVIDIA_TEGRA_I2C_H__ |
| |
| #include <stdint.h> |
| |
| void i2c_init(unsigned bus); |
| void tegra_software_i2c_init(unsigned bus); |
| void tegra_software_i2c_disable(unsigned bus); |
| |
| enum { |
| /* Word 0 */ |
| IOHEADER_PROTHDRSZ_SHIFT = 28, |
| IOHEADER_PROTHDRSZ_MASK = 0x3 << IOHEADER_PROTHDRSZ_SHIFT, |
| IOHEADER_PKTID_SHIFT = 16, |
| IOHEADER_PKTID_MASK = 0xff << IOHEADER_PKTID_SHIFT, |
| IOHEADER_CONTROLLER_ID_SHIFT = 12, |
| IOHEADER_CONTROLLER_ID_MASK = 0xf << IOHEADER_CONTROLLER_ID_SHIFT, |
| IOHEADER_PROTOCOL_SHIFT = 4, |
| IOHEADER_PROTOCOL_MASK = 0xf << IOHEADER_PROTOCOL_SHIFT, |
| IOHEADER_PROTOCOL_I2C = 1 << IOHEADER_PROTOCOL_SHIFT, |
| IOHEADER_PKTTYPE_SHIFT = 0, |
| IOHEADER_PKTTYPE_MASK = 0x7 << IOHEADER_PKTTYPE_SHIFT, |
| IOHEADER_PKTTYPE_REQUEST = 0 << IOHEADER_PKTTYPE_SHIFT, |
| IOHEADER_PKTTYPE_RESPONSE = 1 << IOHEADER_PKTTYPE_SHIFT, |
| IOHEADER_PKTTYPE_INTERRUPT = 2 << IOHEADER_PKTTYPE_SHIFT, |
| IOHEADER_PKTTYPE_STOP = 3 << IOHEADER_PKTTYPE_SHIFT, |
| |
| /* Word 1 */ |
| IOHEADER_PAYLOADSIZE_SHIFT = 0, |
| IOHEADER_PAYLOADSIZE_MASK = 0xfff << IOHEADER_PAYLOADSIZE_SHIFT |
| }; |
| |
| enum { |
| IOHEADER_I2C_REQ_RESP_FREQ_MASK = 0x1 << 25, |
| IOHEADER_I2C_REQ_RESP_FREQ_END = 0 << 25, |
| IOHEADER_I2C_REQ_RESP_FREQ_EACH = 1 << 25, |
| IOHEADER_I2C_REQ_RESP_ENABLE = 0x1 << 24, |
| IOHEADER_I2C_REQ_HS_MODE = 0x1 << 22, |
| IOHEADER_I2C_REQ_CONTINUE_ON_NACK = 0x1 << 21, |
| IOHEADER_I2C_REQ_SEND_START_BYTE = 0x1 << 20, |
| IOHEADER_I2C_REQ_READ = 0x1 << 19, |
| IOHEADER_I2C_REQ_ADDR_MODE_MASK = 0x1 << 18, |
| IOHEADER_I2C_REQ_ADDR_MODE_7BIT = 0 << 18, |
| IOHEADER_I2C_REQ_ADDR_MODE_10BIT = 1 << 18, |
| IOHEADER_I2C_REQ_IE = 0x1 << 17, |
| IOHEADER_I2C_REQ_REPEAT_START = 0x1 << 16, |
| IOHEADER_I2C_REQ_STOP = 0x0 << 16, |
| IOHEADER_I2C_REQ_CONTINUE_XFER = 0x1 << 15, |
| IOHEADER_I2C_REQ_HS_MASTER_ADDR_SHIFT = 12, |
| IOHEADER_I2C_REQ_HS_MASTER_ADDR_MASK = |
| 0x7 << IOHEADER_I2C_REQ_HS_MASTER_ADDR_SHIFT, |
| IOHEADER_I2C_REQ_SLAVE_ADDR_SHIFT = 0, |
| IOHEADER_I2C_REQ_SLAVE_ADDR_MASK = |
| 0x3ff << IOHEADER_I2C_REQ_SLAVE_ADDR_SHIFT |
| }; |
| |
| enum { |
| I2C_CNFG_MSTR_CLR_BUS_ON_TIMEOUT = 0x1 << 15, |
| I2C_CNFG_DEBOUNCE_CNT_SHIFT = 12, |
| I2C_CNFG_DEBOUNCE_CNT_MASK = 0x7 << I2C_CNFG_DEBOUNCE_CNT_SHIFT, |
| I2C_CNFG_NEW_MASTER_FSM = 0x1 << 11, |
| I2C_CNFG_PACKET_MODE_EN = 0x1 << 10, |
| I2C_CNFG_SEND = 0x1 << 9, |
| I2C_CNFG_NOACK = 0x1 << 8, |
| I2C_CNFG_CMD2 = 0x1 << 7, |
| I2C_CNFG_CMD1 = 0x1 << 6, |
| I2C_CNFG_START = 0x1 << 5, |
| I2C_CNFG_SLV2_SHIFT = 4, |
| I2C_CNFG_SLV2_MASK = 0x1 << I2C_CNFG_SLV2_SHIFT, |
| I2C_CNFG_LENGTH_SHIFT = 1, |
| I2C_CNFG_LENGTH_MASK = 0x7 << I2C_CNFG_LENGTH_SHIFT, |
| I2C_CNFG_A_MOD = 0x1 << 0, |
| }; |
| |
| enum { |
| I2C_PKT_STATUS_COMPLETE = 0x1 << 24, |
| I2C_PKT_STATUS_PKT_ID_SHIFT = 16, |
| I2C_PKT_STATUS_PKT_ID_MASK = 0xff << I2C_PKT_STATUS_PKT_ID_SHIFT, |
| I2C_PKT_STATUS_BYTENUM_SHIFT = 4, |
| I2C_PKT_STATUS_BYTENUM_MASK = 0xfff << I2C_PKT_STATUS_BYTENUM_SHIFT, |
| I2C_PKT_STATUS_NOACK_ADDR = 0x1 << 3, |
| I2C_PKT_STATUS_NOACK_DATA = 0x1 << 2, |
| I2C_PKT_STATUS_ARB_LOST = 0x1 << 1, |
| I2C_PKT_STATUS_BUSY = 0x1 << 0 |
| }; |
| |
| enum { |
| I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_SHIFT = 4, |
| I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_MASK = |
| 0xf << I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_SHIFT, |
| I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_SHIFT = 0, |
| I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_MASK = |
| 0xf << I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_SHIFT |
| }; |
| |
| enum { |
| I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_SHIFT = 16, |
| I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_MASK = |
| 0xff << I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_SHIFT, |
| I2C_BUS_CLEAR_CONFIG_BC_STOP_COND_STOP = 0x1 << 2, |
| I2C_BUS_CLEAR_CONFIG_BC_TERMINATE_IMMEDIATE = 0x1 << 1, |
| I2C_BUS_CLEAR_CONFIG_BC_ENABLE = 0x1 << 0, |
| |
| I2C_BUS_CLEAR_STATUS_CLEARED = 0x1 << 0, |
| |
| I2C_CONFIG_LOAD_MSTR_CONFIG_LOAD_ENABLE = 0x1 << 0 |
| }; |
| |
| struct tegra_i2c_bus_info { |
| void *base; |
| uint32_t reset_bit; |
| void (*reset_func)(u32 bit); |
| }; |
| |
| extern struct tegra_i2c_bus_info tegra_i2c_info[]; |
| |
| struct tegra_i2c_regs { |
| uint32_t cnfg; |
| uint32_t cmd_addr0; |
| uint32_t cmd_addr1; |
| uint32_t cmd_data1; |
| uint32_t cmd_data2; |
| uint8_t _rsv0[8]; |
| uint32_t status; |
| uint32_t sl_cnfg; |
| uint32_t sl_rcvd; |
| uint32_t sl_status; |
| uint32_t sl_addr1; |
| uint32_t sl_addr2; |
| uint32_t tlow_sext; |
| uint8_t _rsv1[4]; |
| uint32_t sl_delay_count; |
| uint32_t sl_int_mask; |
| uint32_t sl_int_source; |
| uint32_t sl_int_set; |
| uint8_t _rsv2[4]; |
| uint32_t tx_packet_fifo; |
| uint32_t rx_fifo; |
| uint32_t packet_transfer_status; |
| uint32_t fifo_control; |
| uint32_t fifo_status; |
| uint32_t interrupt_mask; |
| uint32_t interrupt_status; |
| uint32_t clk_divisor; |
| uint32_t interrupt_source; |
| uint32_t interrupt_set; |
| uint32_t slv_tx_packet_fifo; |
| uint32_t slv_rx_fifo; |
| uint32_t slv_packet_status; |
| uint32_t bus_clear_config; |
| uint32_t bus_clear_status; |
| uint32_t config_load; |
| }; |
| check_member(tegra_i2c_regs, config_load, 0x8C); |
| |
| extern unsigned g_num_i2c_buses; |
| |
| #endif /* __SOC_NVIDIA_TEGRA_I2C_H__ */ |