2 * Freescale i.MX28 I2C Register Definitions
4 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
5 * on behalf of DENX Software Engineering GmbH
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #ifndef __MX28_REGS_I2C_H__
24 #define __MX28_REGS_I2C_H__
26 #include <asm/arch/regs-common.h>
29 struct mx28_i2c_regs {
30 mx28_reg(hw_i2c_ctrl0)
31 mx28_reg(hw_i2c_timing0)
32 mx28_reg(hw_i2c_timing1)
33 mx28_reg(hw_i2c_timing2)
34 mx28_reg(hw_i2c_ctrl1)
36 mx28_reg(hw_i2c_queuectrl)
37 mx28_reg(hw_i2c_queuestat)
38 mx28_reg(hw_i2c_queuecmd)
39 mx28_reg(hw_i2c_queuedata)
41 mx28_reg(hw_i2c_debug0)
42 mx28_reg(hw_i2c_debug1)
43 mx28_reg(hw_i2c_version)
47 #define I2C_CTRL_SFTRST (1 << 31)
48 #define I2C_CTRL_CLKGATE (1 << 30)
49 #define I2C_CTRL_RUN (1 << 29)
50 #define I2C_CTRL_PREACK (1 << 27)
51 #define I2C_CTRL_ACKNOWLEDGE (1 << 26)
52 #define I2C_CTRL_SEND_NAK_ON_LAST (1 << 25)
53 #define I2C_CTRL_MULTI_MASTER (1 << 23)
54 #define I2C_CTRL_CLOCK_HELD (1 << 22)
55 #define I2C_CTRL_RETAIN_CLOCK (1 << 21)
56 #define I2C_CTRL_POST_SEND_STOP (1 << 20)
57 #define I2C_CTRL_PRE_SEND_START (1 << 19)
58 #define I2C_CTRL_SLAVE_ADDRESS_ENABLE (1 << 18)
59 #define I2C_CTRL_MASTER_MODE (1 << 17)
60 #define I2C_CTRL_DIRECTION (1 << 16)
61 #define I2C_CTRL_XFER_COUNT_MASK 0xffff
62 #define I2C_CTRL_XFER_COUNT_OFFSET 0
64 #define I2C_TIMING0_HIGH_COUNT_MASK (0x3ff << 16)
65 #define I2C_TIMING0_HIGH_COUNT_OFFSET 16
66 #define I2C_TIMING0_RCV_COUNT_MASK 0x3ff
67 #define I2C_TIMING0_RCV_COUNT_OFFSET 0
69 #define I2C_TIMING1_LOW_COUNT_MASK (0x3ff << 16)
70 #define I2C_TIMING1_LOW_COUNT_OFFSET 16
71 #define I2C_TIMING1_XMIT_COUNT_MASK 0x3ff
72 #define I2C_TIMING1_XMIT_COUNT_OFFSET 0
74 #define I2C_TIMING2_BUS_FREE_MASK (0x3ff << 16)
75 #define I2C_TIMING2_BUS_FREE_OFFSET 16
76 #define I2C_TIMING2_LEADIN_COUNT_MASK 0x3ff
77 #define I2C_TIMING2_LEADIN_COUNT_OFFSET 0
79 #define I2C_CTRL1_RD_QUEUE_IRQ (1 << 30)
80 #define I2C_CTRL1_WR_QUEUE_IRQ (1 << 29)
81 #define I2C_CTRL1_CLR_GOT_A_NAK (1 << 28)
82 #define I2C_CTRL1_ACK_MODE (1 << 27)
83 #define I2C_CTRL1_FORCE_DATA_IDLE (1 << 26)
84 #define I2C_CTRL1_FORCE_CLK_IDLE (1 << 25)
85 #define I2C_CTRL1_BCAST_SLAVE_EN (1 << 24)
86 #define I2C_CTRL1_SLAVE_ADDRESS_BYTE_MASK (0xff << 16)
87 #define I2C_CTRL1_SLAVE_ADDRESS_BYTE_OFFSET 16
88 #define I2C_CTRL1_BUS_FREE_IRQ_EN (1 << 15)
89 #define I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ_EN (1 << 14)
90 #define I2C_CTRL1_NO_SLAVE_ACK_IRQ_EN (1 << 13)
91 #define I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ_EN (1 << 12)
92 #define I2C_CTRL1_EARLY_TERM_IRQ_EN (1 << 11)
93 #define I2C_CTRL1_MASTER_LOSS_IRQ_EN (1 << 10)
94 #define I2C_CTRL1_SLAVE_STOP_IRQ_EN (1 << 9)
95 #define I2C_CTRL1_SLAVE_IRQ_EN (1 << 8)
96 #define I2C_CTRL1_BUS_FREE_IRQ (1 << 7)
97 #define I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ (1 << 6)
98 #define I2C_CTRL1_NO_SLAVE_ACK_IRQ (1 << 5)
99 #define I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ (1 << 4)
100 #define I2C_CTRL1_EARLY_TERM_IRQ (1 << 3)
101 #define I2C_CTRL1_MASTER_LOSS_IRQ (1 << 2)
102 #define I2C_CTRL1_SLAVE_STOP_IRQ (1 << 1)
103 #define I2C_CTRL1_SLAVE_IRQ (1 << 0)
105 #define I2C_STAT_MASTER_PRESENT (1 << 31)
106 #define I2C_STAT_SLAVE_PRESENT (1 << 30)
107 #define I2C_STAT_ANY_ENABLED_IRQ (1 << 29)
108 #define I2C_STAT_GOT_A_NAK (1 << 28)
109 #define I2C_STAT_RCVD_SLAVE_ADDR_MASK (0xff << 16)
110 #define I2C_STAT_RCVD_SLAVE_ADDR_OFFSET 16
111 #define I2C_STAT_SLAVE_ADDR_EQ_ZERO (1 << 15)
112 #define I2C_STAT_SLAVE_FOUND (1 << 14)
113 #define I2C_STAT_SLAVE_SEARCHING (1 << 13)
114 #define I2C_STAT_DATA_ENGING_DMA_WAIT (1 << 12)
115 #define I2C_STAT_BUS_BUSY (1 << 11)
116 #define I2C_STAT_CLK_GEN_BUSY (1 << 10)
117 #define I2C_STAT_DATA_ENGINE_BUSY (1 << 9)
118 #define I2C_STAT_SLAVE_BUSY (1 << 8)
119 #define I2C_STAT_BUS_FREE_IRQ_SUMMARY (1 << 7)
120 #define I2C_STAT_DATA_ENGINE_CMPLT_IRQ_SUMMARY (1 << 6)
121 #define I2C_STAT_NO_SLAVE_ACK_IRQ_SUMMARY (1 << 5)
122 #define I2C_STAT_OVERSIZE_XFER_TERM_IRQ_SUMMARY (1 << 4)
123 #define I2C_STAT_EARLY_TERM_IRQ_SUMMARY (1 << 3)
124 #define I2C_STAT_MASTER_LOSS_IRQ_SUMMARY (1 << 2)
125 #define I2C_STAT_SLAVE_STOP_IRQ_SUMMARY (1 << 1)
126 #define I2C_STAT_SLAVE_IRQ_SUMMARY (1 << 0)
128 #define I2C_QUEUECTRL_RD_THRESH_MASK (0x1f << 16)
129 #define I2C_QUEUECTRL_RD_THRESH_OFFSET 16
130 #define I2C_QUEUECTRL_WR_THRESH_MASK (0x1f << 8)
131 #define I2C_QUEUECTRL_WR_THRESH_OFFSET 8
132 #define I2C_QUEUECTRL_QUEUE_RUN (1 << 5)
133 #define I2C_QUEUECTRL_RD_CLEAR (1 << 4)
134 #define I2C_QUEUECTRL_WR_CLEAR (1 << 3)
135 #define I2C_QUEUECTRL_PIO_QUEUE_MODE (1 << 2)
136 #define I2C_QUEUECTRL_RD_QUEUE_IRQ_EN (1 << 1)
137 #define I2C_QUEUECTRL_WR_QUEUE_IRQ_EN (1 << 0)
139 #define I2C_QUEUESTAT_RD_QUEUE_FULL (1 << 14)
140 #define I2C_QUEUESTAT_RD_QUEUE_EMPTY (1 << 13)
141 #define I2C_QUEUESTAT_RD_QUEUE_CNT_MASK (0x1f << 8)
142 #define I2C_QUEUESTAT_RD_QUEUE_CNT_OFFSET 8
143 #define I2C_QUEUESTAT_WR_QUEUE_FULL (1 << 6)
144 #define I2C_QUEUESTAT_WR_QUEUE_EMPTY (1 << 5)
145 #define I2C_QUEUESTAT_WR_QUEUE_CNT_MASK 0x1f
146 #define I2C_QUEUESTAT_WR_QUEUE_CNT_OFFSET 0
148 #define I2C_QUEUECMD_PREACK (1 << 27)
149 #define I2C_QUEUECMD_ACKNOWLEDGE (1 << 26)
150 #define I2C_QUEUECMD_SEND_NAK_ON_LAST (1 << 25)
151 #define I2C_QUEUECMD_MULTI_MASTER (1 << 23)
152 #define I2C_QUEUECMD_CLOCK_HELD (1 << 22)
153 #define I2C_QUEUECMD_RETAIN_CLOCK (1 << 21)
154 #define I2C_QUEUECMD_POST_SEND_STOP (1 << 20)
155 #define I2C_QUEUECMD_PRE_SEND_START (1 << 19)
156 #define I2C_QUEUECMD_SLAVE_ADDRESS_ENABLE (1 << 18)
157 #define I2C_QUEUECMD_MASTER_MODE (1 << 17)
158 #define I2C_QUEUECMD_DIRECTION (1 << 16)
159 #define I2C_QUEUECMD_XFER_COUNT_MASK 0xffff
160 #define I2C_QUEUECMD_XFER_COUNT_OFFSET 0
162 #define I2C_QUEUEDATA_DATA_MASK 0xffffffff
163 #define I2C_QUEUEDATA_DATA_OFFSET 0
165 #define I2C_DATA_DATA_MASK 0xffffffff
166 #define I2C_DATA_DATA_OFFSET 0
168 #define I2C_DEBUG0_DMAREQ (1 << 31)
169 #define I2C_DEBUG0_DMAENDCMD (1 << 30)
170 #define I2C_DEBUG0_DMAKICK (1 << 29)
171 #define I2C_DEBUG0_DMATERMINATE (1 << 28)
172 #define I2C_DEBUG0_STATE_VALUE_MASK (0x3 << 26)
173 #define I2C_DEBUG0_STATE_VALUE_OFFSET 26
174 #define I2C_DEBUG0_DMA_STATE_MASK (0x3ff << 16)
175 #define I2C_DEBUG0_DMA_STATE_OFFSET 16
176 #define I2C_DEBUG0_START_TOGGLE (1 << 15)
177 #define I2C_DEBUG0_STOP_TOGGLE (1 << 14)
178 #define I2C_DEBUG0_GRAB_TOGGLE (1 << 13)
179 #define I2C_DEBUG0_CHANGE_TOGGLE (1 << 12)
180 #define I2C_DEBUG0_STATE_LATCH (1 << 11)
181 #define I2C_DEBUG0_SLAVE_HOLD_CLK (1 << 10)
182 #define I2C_DEBUG0_STATE_STATE_MASK 0x3ff
183 #define I2C_DEBUG0_STATE_STATE_OFFSET 0
185 #define I2C_DEBUG1_I2C_CLK_IN (1 << 31)
186 #define I2C_DEBUG1_I2C_DATA_IN (1 << 30)
187 #define I2C_DEBUG1_DMA_BYTE_ENABLES_MASK (0xf << 24)
188 #define I2C_DEBUG1_DMA_BYTE_ENABLES_OFFSET 24
189 #define I2C_DEBUG1_CLK_GEN_STATE_MASK (0xff << 16)
190 #define I2C_DEBUG1_CLK_GEN_STATE_OFFSET 16
191 #define I2C_DEBUG1_LST_MODE_MASK (0x3 << 9)
192 #define I2C_DEBUG1_LST_MODE_OFFSET 9
193 #define I2C_DEBUG1_LOCAL_SLAVE_TEST (1 << 8)
194 #define I2C_DEBUG1_FORCE_CLK_ON (1 << 4)
195 #define I2C_DEBUG1_FORCE_ABR_LOSS (1 << 3)
196 #define I2C_DEBUG1_FORCE_RCV_ACK (1 << 2)
197 #define I2C_DEBUG1_FORCE_I2C_DATA_OE (1 << 1)
198 #define I2C_DEBUG1_FORCE_I2C_CLK_OE (1 << 0)
200 #define I2C_VERSION_MAJOR_MASK (0xff << 24)
201 #define I2C_VERSION_MAJOR_OFFSET 24
202 #define I2C_VERSION_MINOR_MASK (0xff << 16)
203 #define I2C_VERSION_MINOR_OFFSET 16
204 #define I2C_VERSION_STEP_MASK 0xffff
205 #define I2C_VERSION_STEP_OFFSET 0
207 #endif /* __MX28_REGS_I2C_H__ */