mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-18 09:13:06 +00:00
642400ced6
Update this driver to use the new standard enums for speed. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2012-2020 ASPEED Technology Inc.
|
|
* Copyright 2016 IBM Corporation
|
|
* Copyright 2017 Google, Inc.
|
|
*/
|
|
#ifndef __AST_I2C_H_
|
|
#define __AST_I2C_H_
|
|
|
|
struct ast_i2c_regs {
|
|
u32 fcr;
|
|
u32 cactcr1;
|
|
u32 cactcr2;
|
|
u32 icr;
|
|
u32 isr;
|
|
u32 csr;
|
|
u32 sdar;
|
|
u32 pbcr;
|
|
u32 trbbr;
|
|
#ifdef CONFIG_ASPEED_AST2500
|
|
u32 dma_mbar;
|
|
u32 dma_tlr;
|
|
#endif
|
|
};
|
|
|
|
/* Device Register Definition */
|
|
/* 0x00 : I2CD Function Control Register */
|
|
#define I2CD_BUFF_SEL_MASK (0x7 << 20)
|
|
#define I2CD_BUFF_SEL(x) (x << 20)
|
|
#define I2CD_M_SDA_LOCK_EN (0x1 << 16)
|
|
#define I2CD_MULTI_MASTER_DIS (0x1 << 15)
|
|
#define I2CD_M_SCL_DRIVE_EN (0x1 << 14)
|
|
#define I2CD_MSB_STS (0x1 << 9)
|
|
#define I2CD_SDA_DRIVE_1T_EN (0x1 << 8)
|
|
#define I2CD_M_SDA_DRIVE_1T_EN (0x1 << 7)
|
|
#define I2CD_M_HIGH_SPEED_EN (0x1 << 6)
|
|
#define I2CD_DEF_ADDR_EN (0x1 << 5)
|
|
#define I2CD_DEF_ALERT_EN (0x1 << 4)
|
|
#define I2CD_DEF_ARP_EN (0x1 << 3)
|
|
#define I2CD_DEF_GCALL_EN (0x1 << 2)
|
|
#define I2CD_SLAVE_EN (0x1 << 1)
|
|
#define I2CD_MASTER_EN (0x1)
|
|
|
|
/* 0x04 : I2CD Clock and AC Timing Control Register #1 */
|
|
/* Base register value. These bits are always set by the driver. */
|
|
#define I2CD_CACTC_BASE 0xfff00300
|
|
#define I2CD_TCKHIGH_SHIFT 16
|
|
#define I2CD_TCKLOW_SHIFT 12
|
|
#define I2CD_THDDAT_SHIFT 10
|
|
#define I2CD_TO_DIV_SHIFT 8
|
|
#define I2CD_BASE_DIV_SHIFT 0
|
|
|
|
/* 0x08 : I2CD Clock and AC Timing Control Register #2 */
|
|
#define I2CD_tTIMEOUT 1
|
|
#define I2CD_NO_TIMEOUT_CTRL 0
|
|
|
|
/* 0x0c : I2CD Interrupt Control Register &
|
|
* 0x10 : I2CD Interrupt Status Register
|
|
*
|
|
* These share bit definitions, so use the same values for the enable &
|
|
* status bits.
|
|
*/
|
|
#define I2CD_INTR_SDA_DL_TIMEOUT (0x1 << 14)
|
|
#define I2CD_INTR_BUS_RECOVER_DONE (0x1 << 13)
|
|
#define I2CD_INTR_SMBUS_ALERT (0x1 << 12)
|
|
#define I2CD_INTR_SMBUS_ARP_ADDR (0x1 << 11)
|
|
#define I2CD_INTR_SMBUS_DEV_ALERT_ADDR (0x1 << 10)
|
|
#define I2CD_INTR_SMBUS_DEF_ADDR (0x1 << 9)
|
|
#define I2CD_INTR_GCALL_ADDR (0x1 << 8)
|
|
#define I2CD_INTR_SLAVE_MATCH (0x1 << 7)
|
|
#define I2CD_INTR_SCL_TIMEOUT (0x1 << 6)
|
|
#define I2CD_INTR_ABNORMAL (0x1 << 5)
|
|
#define I2CD_INTR_NORMAL_STOP (0x1 << 4)
|
|
#define I2CD_INTR_ARBIT_LOSS (0x1 << 3)
|
|
#define I2CD_INTR_RX_DONE (0x1 << 2)
|
|
#define I2CD_INTR_TX_NAK (0x1 << 1)
|
|
#define I2CD_INTR_TX_ACK (0x1 << 0)
|
|
|
|
/* 0x14 : I2CD Command/Status Register */
|
|
#define I2CD_SDA_OE (0x1 << 28)
|
|
#define I2CD_SDA_O (0x1 << 27)
|
|
#define I2CD_SCL_OE (0x1 << 26)
|
|
#define I2CD_SCL_O (0x1 << 25)
|
|
#define I2CD_TX_TIMING (0x1 << 24)
|
|
#define I2CD_TX_STATUS (0x1 << 23)
|
|
|
|
/* Tx State Machine */
|
|
#define I2CD_IDLE 0x0
|
|
#define I2CD_MACTIVE 0x8
|
|
#define I2CD_MSTART 0x9
|
|
#define I2CD_MSTARTR 0xa
|
|
#define I2CD_MSTOP 0xb
|
|
#define I2CD_MTXD 0xc
|
|
#define I2CD_MRXACK 0xd
|
|
#define I2CD_MRXD 0xe
|
|
#define I2CD_MTXACK 0xf
|
|
#define I2CD_SWAIT 0x1
|
|
#define I2CD_SRXD 0x4
|
|
#define I2CD_STXACK 0x5
|
|
#define I2CD_STXD 0x6
|
|
#define I2CD_SRXACK 0x7
|
|
#define I2CD_RECOVER 0x3
|
|
|
|
#define I2CD_SCL_LINE_STS (0x1 << 18)
|
|
#define I2CD_SDA_LINE_STS (0x1 << 17)
|
|
#define I2CD_BUS_BUSY_STS (0x1 << 16)
|
|
#define I2CD_SDA_OE_OUT_DIR (0x1 << 15)
|
|
#define I2CD_SDA_O_OUT_DIR (0x1 << 14)
|
|
#define I2CD_SCL_OE_OUT_DIR (0x1 << 13)
|
|
#define I2CD_SCL_O_OUT_DIR (0x1 << 12)
|
|
#define I2CD_BUS_RECOVER_CMD (0x1 << 11)
|
|
#define I2CD_S_ALT_EN (0x1 << 10)
|
|
#define I2CD_RX_DMA_ENABLE (0x1 << 9)
|
|
#define I2CD_TX_DMA_ENABLE (0x1 << 8)
|
|
|
|
/* Command Bit */
|
|
#define I2CD_RX_BUFF_ENABLE (0x1 << 7)
|
|
#define I2CD_TX_BUFF_ENABLE (0x1 << 6)
|
|
#define I2CD_M_STOP_CMD (0x1 << 5)
|
|
#define I2CD_M_S_RX_CMD_LAST (0x1 << 4)
|
|
#define I2CD_M_RX_CMD (0x1 << 3)
|
|
#define I2CD_S_TX_CMD (0x1 << 2)
|
|
#define I2CD_M_TX_CMD (0x1 << 1)
|
|
#define I2CD_M_START_CMD 0x1
|
|
|
|
#define I2CD_RX_DATA_SHIFT 8
|
|
#define I2CD_RX_DATA_MASK (0xff << I2CD_RX_DATA_SHIFT)
|
|
|
|
#endif /* __AST_I2C_H_ */
|