1 /*
2  * Freescale i.MX28 I2C Register Definitions
3  *
4  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
5  * on behalf of DENX Software Engineering GmbH
6  *
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.
11  *
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.
16  *
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
20  *
21  */
22 
23 #ifndef __MX28_REGS_I2C_H__
24 #define __MX28_REGS_I2C_H__
25 
26 #include <asm/arch/regs-common.h>
27 
28 #ifndef	__ASSEMBLY__
29 struct mxs_i2c_regs {
30 	mxs_reg_32(hw_i2c_ctrl0)
31 	mxs_reg_32(hw_i2c_timing0)
32 	mxs_reg_32(hw_i2c_timing1)
33 	mxs_reg_32(hw_i2c_timing2)
34 	mxs_reg_32(hw_i2c_ctrl1)
35 	mxs_reg_32(hw_i2c_stat)
36 	mxs_reg_32(hw_i2c_queuectrl)
37 	mxs_reg_32(hw_i2c_queuestat)
38 	mxs_reg_32(hw_i2c_queuecmd)
39 	mxs_reg_32(hw_i2c_queuedata)
40 	mxs_reg_32(hw_i2c_data)
41 	mxs_reg_32(hw_i2c_debug0)
42 	mxs_reg_32(hw_i2c_debug1)
43 	mxs_reg_32(hw_i2c_version)
44 };
45 #endif
46 
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
63 
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
68 
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
73 
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
78 
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)
104 
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)
127 
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)
138 
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
147 
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
161 
162 #define	I2C_QUEUEDATA_DATA_MASK			0xffffffff
163 #define	I2C_QUEUEDATA_DATA_OFFSET		0
164 
165 #define	I2C_DATA_DATA_MASK			0xffffffff
166 #define	I2C_DATA_DATA_OFFSET			0
167 
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
184 
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)
199 
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
206 
207 #endif	/* __MX28_REGS_I2C_H__ */
208