2 * Faraday I2C Controller
4 * (C) Copyright 2010 Faraday Technology
5 * Dante Su <dantesu@faraday-tech.com>
7 * SPDX-License-Identifier: GPL-2.0+
16 struct fti2c010_regs {
17 uint32_t cr; /* 0x00: control register */
18 uint32_t sr; /* 0x04: status register */
19 uint32_t cdr; /* 0x08: clock division register */
20 uint32_t dr; /* 0x0c: data register */
21 uint32_t sar; /* 0x10: slave address register */
22 uint32_t tgsr;/* 0x14: time & glitch suppression register */
23 uint32_t bmr; /* 0x18: bus monitor register */
25 uint32_t revr;/* 0x30: revision register */
31 #define CR_ALIRQ 0x2000 /* arbitration lost interrupt (master) */
32 #define CR_SAMIRQ 0x1000 /* slave address match interrupt (slave) */
33 #define CR_STOPIRQ 0x800 /* stop condition interrupt (slave) */
34 #define CR_NAKRIRQ 0x400 /* NACK response interrupt (master) */
35 #define CR_DRIRQ 0x200 /* rx interrupt (both) */
36 #define CR_DTIRQ 0x100 /* tx interrupt (both) */
37 #define CR_TBEN 0x80 /* tx enable (both) */
38 #define CR_NAK 0x40 /* NACK (both) */
39 #define CR_STOP 0x20 /* stop (master) */
40 #define CR_START 0x10 /* start (master) */
41 #define CR_GCEN 0x8 /* general call support (slave) */
42 #define CR_SCLEN 0x4 /* enable clock out (master) */
43 #define CR_I2CEN 0x2 /* enable I2C (both) */
44 #define CR_I2CRST 0x1 /* reset I2C (both) */
46 (CR_ALIRQ | CR_NAKRIRQ | CR_DRIRQ | CR_DTIRQ | CR_SCLEN | CR_I2CEN)
51 #define SR_CLRAL 0x400 /* clear arbitration lost */
52 #define SR_CLRGC 0x200 /* clear general call */
53 #define SR_CLRSAM 0x100 /* clear slave address match */
54 #define SR_CLRSTOP 0x80 /* clear stop */
55 #define SR_CLRNAKR 0x40 /* clear NACK respond */
56 #define SR_DR 0x20 /* rx ready */
57 #define SR_DT 0x10 /* tx done */
58 #define SR_BB 0x8 /* bus busy */
59 #define SR_BUSY 0x4 /* chip busy */
60 #define SR_ACK 0x2 /* ACK/NACK received */
61 #define SR_RW 0x1 /* set when master-rx or slave-tx mode */
64 * clock division register
66 #define CDR_DIV(n) ((n) & 0x3ffff)
69 * time & glitch suppression register
71 #define TGSR_GSR(n) (((n) & 0x7) << 10)
72 #define TGSR_TSR(n) ((n) & 0x3ff)
75 * bus monitor register
77 #define BMR_SCL 0x2 /* SCL is pull-up */
78 #define BMR_SDA 0x1 /* SDA is pull-up */
80 #endif /* __FTI2C010_H */