1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Freescale i.MX28 I2C Register Definitions
4  *
5  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
6  * on behalf of DENX Software Engineering GmbH
7  */
8 
9 #ifndef __MX28_REGS_I2C_H__
10 #define __MX28_REGS_I2C_H__
11 
12 #include <asm/mach-imx/regs-common.h>
13 
14 #ifndef	__ASSEMBLY__
15 struct mxs_i2c_regs {
16 	mxs_reg_32(hw_i2c_ctrl0)
17 	mxs_reg_32(hw_i2c_timing0)
18 	mxs_reg_32(hw_i2c_timing1)
19 	mxs_reg_32(hw_i2c_timing2)
20 	mxs_reg_32(hw_i2c_ctrl1)
21 	mxs_reg_32(hw_i2c_stat)
22 	mxs_reg_32(hw_i2c_queuectrl)
23 	mxs_reg_32(hw_i2c_queuestat)
24 	mxs_reg_32(hw_i2c_queuecmd)
25 	mxs_reg_32(hw_i2c_queuedata)
26 	mxs_reg_32(hw_i2c_data)
27 	mxs_reg_32(hw_i2c_debug0)
28 	mxs_reg_32(hw_i2c_debug1)
29 	mxs_reg_32(hw_i2c_version)
30 };
31 #endif
32 
33 #define	I2C_CTRL_SFTRST				(1 << 31)
34 #define	I2C_CTRL_CLKGATE			(1 << 30)
35 #define	I2C_CTRL_RUN				(1 << 29)
36 #define	I2C_CTRL_PREACK				(1 << 27)
37 #define	I2C_CTRL_ACKNOWLEDGE			(1 << 26)
38 #define	I2C_CTRL_SEND_NAK_ON_LAST		(1 << 25)
39 #define	I2C_CTRL_MULTI_MASTER			(1 << 23)
40 #define	I2C_CTRL_CLOCK_HELD			(1 << 22)
41 #define	I2C_CTRL_RETAIN_CLOCK			(1 << 21)
42 #define	I2C_CTRL_POST_SEND_STOP			(1 << 20)
43 #define	I2C_CTRL_PRE_SEND_START			(1 << 19)
44 #define	I2C_CTRL_SLAVE_ADDRESS_ENABLE		(1 << 18)
45 #define	I2C_CTRL_MASTER_MODE			(1 << 17)
46 #define	I2C_CTRL_DIRECTION			(1 << 16)
47 #define	I2C_CTRL_XFER_COUNT_MASK		0xffff
48 #define	I2C_CTRL_XFER_COUNT_OFFSET		0
49 
50 #define	I2C_TIMING0_HIGH_COUNT_MASK		(0x3ff << 16)
51 #define	I2C_TIMING0_HIGH_COUNT_OFFSET		16
52 #define	I2C_TIMING0_RCV_COUNT_MASK		0x3ff
53 #define	I2C_TIMING0_RCV_COUNT_OFFSET		0
54 
55 #define	I2C_TIMING1_LOW_COUNT_MASK		(0x3ff << 16)
56 #define	I2C_TIMING1_LOW_COUNT_OFFSET		16
57 #define	I2C_TIMING1_XMIT_COUNT_MASK		0x3ff
58 #define	I2C_TIMING1_XMIT_COUNT_OFFSET		0
59 
60 #define	I2C_TIMING2_BUS_FREE_MASK		(0x3ff << 16)
61 #define	I2C_TIMING2_BUS_FREE_OFFSET		16
62 #define	I2C_TIMING2_LEADIN_COUNT_MASK		0x3ff
63 #define	I2C_TIMING2_LEADIN_COUNT_OFFSET		0
64 
65 #define	I2C_CTRL1_RD_QUEUE_IRQ			(1 << 30)
66 #define	I2C_CTRL1_WR_QUEUE_IRQ			(1 << 29)
67 #define	I2C_CTRL1_CLR_GOT_A_NAK			(1 << 28)
68 #define	I2C_CTRL1_ACK_MODE			(1 << 27)
69 #define	I2C_CTRL1_FORCE_DATA_IDLE		(1 << 26)
70 #define	I2C_CTRL1_FORCE_CLK_IDLE		(1 << 25)
71 #define	I2C_CTRL1_BCAST_SLAVE_EN		(1 << 24)
72 #define	I2C_CTRL1_SLAVE_ADDRESS_BYTE_MASK	(0xff << 16)
73 #define	I2C_CTRL1_SLAVE_ADDRESS_BYTE_OFFSET	16
74 #define	I2C_CTRL1_BUS_FREE_IRQ_EN		(1 << 15)
75 #define	I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ_EN	(1 << 14)
76 #define	I2C_CTRL1_NO_SLAVE_ACK_IRQ_EN		(1 << 13)
77 #define	I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ_EN	(1 << 12)
78 #define	I2C_CTRL1_EARLY_TERM_IRQ_EN		(1 << 11)
79 #define	I2C_CTRL1_MASTER_LOSS_IRQ_EN		(1 << 10)
80 #define	I2C_CTRL1_SLAVE_STOP_IRQ_EN		(1 << 9)
81 #define	I2C_CTRL1_SLAVE_IRQ_EN			(1 << 8)
82 #define	I2C_CTRL1_BUS_FREE_IRQ			(1 << 7)
83 #define	I2C_CTRL1_DATA_ENGINE_CMPLT_IRQ		(1 << 6)
84 #define	I2C_CTRL1_NO_SLAVE_ACK_IRQ		(1 << 5)
85 #define	I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ	(1 << 4)
86 #define	I2C_CTRL1_EARLY_TERM_IRQ		(1 << 3)
87 #define	I2C_CTRL1_MASTER_LOSS_IRQ		(1 << 2)
88 #define	I2C_CTRL1_SLAVE_STOP_IRQ		(1 << 1)
89 #define	I2C_CTRL1_SLAVE_IRQ			(1 << 0)
90 
91 #define	I2C_STAT_MASTER_PRESENT			(1 << 31)
92 #define	I2C_STAT_SLAVE_PRESENT			(1 << 30)
93 #define	I2C_STAT_ANY_ENABLED_IRQ		(1 << 29)
94 #define	I2C_STAT_GOT_A_NAK			(1 << 28)
95 #define	I2C_STAT_RCVD_SLAVE_ADDR_MASK		(0xff << 16)
96 #define	I2C_STAT_RCVD_SLAVE_ADDR_OFFSET		16
97 #define	I2C_STAT_SLAVE_ADDR_EQ_ZERO		(1 << 15)
98 #define	I2C_STAT_SLAVE_FOUND			(1 << 14)
99 #define	I2C_STAT_SLAVE_SEARCHING		(1 << 13)
100 #define	I2C_STAT_DATA_ENGING_DMA_WAIT		(1 << 12)
101 #define	I2C_STAT_BUS_BUSY			(1 << 11)
102 #define	I2C_STAT_CLK_GEN_BUSY			(1 << 10)
103 #define	I2C_STAT_DATA_ENGINE_BUSY		(1 << 9)
104 #define	I2C_STAT_SLAVE_BUSY			(1 << 8)
105 #define	I2C_STAT_BUS_FREE_IRQ_SUMMARY		(1 << 7)
106 #define	I2C_STAT_DATA_ENGINE_CMPLT_IRQ_SUMMARY	(1 << 6)
107 #define	I2C_STAT_NO_SLAVE_ACK_IRQ_SUMMARY	(1 << 5)
108 #define	I2C_STAT_OVERSIZE_XFER_TERM_IRQ_SUMMARY	(1 << 4)
109 #define	I2C_STAT_EARLY_TERM_IRQ_SUMMARY		(1 << 3)
110 #define	I2C_STAT_MASTER_LOSS_IRQ_SUMMARY	(1 << 2)
111 #define	I2C_STAT_SLAVE_STOP_IRQ_SUMMARY		(1 << 1)
112 #define	I2C_STAT_SLAVE_IRQ_SUMMARY		(1 << 0)
113 
114 #define	I2C_QUEUECTRL_RD_THRESH_MASK		(0x1f << 16)
115 #define	I2C_QUEUECTRL_RD_THRESH_OFFSET		16
116 #define	I2C_QUEUECTRL_WR_THRESH_MASK		(0x1f << 8)
117 #define	I2C_QUEUECTRL_WR_THRESH_OFFSET		8
118 #define	I2C_QUEUECTRL_QUEUE_RUN			(1 << 5)
119 #define	I2C_QUEUECTRL_RD_CLEAR			(1 << 4)
120 #define	I2C_QUEUECTRL_WR_CLEAR			(1 << 3)
121 #define	I2C_QUEUECTRL_PIO_QUEUE_MODE		(1 << 2)
122 #define	I2C_QUEUECTRL_RD_QUEUE_IRQ_EN		(1 << 1)
123 #define	I2C_QUEUECTRL_WR_QUEUE_IRQ_EN		(1 << 0)
124 
125 #define	I2C_QUEUESTAT_RD_QUEUE_FULL		(1 << 14)
126 #define	I2C_QUEUESTAT_RD_QUEUE_EMPTY		(1 << 13)
127 #define	I2C_QUEUESTAT_RD_QUEUE_CNT_MASK		(0x1f << 8)
128 #define	I2C_QUEUESTAT_RD_QUEUE_CNT_OFFSET	8
129 #define	I2C_QUEUESTAT_WR_QUEUE_FULL		(1 << 6)
130 #define	I2C_QUEUESTAT_WR_QUEUE_EMPTY		(1 << 5)
131 #define	I2C_QUEUESTAT_WR_QUEUE_CNT_MASK		0x1f
132 #define	I2C_QUEUESTAT_WR_QUEUE_CNT_OFFSET	0
133 
134 #define	I2C_QUEUECMD_PREACK			(1 << 27)
135 #define	I2C_QUEUECMD_ACKNOWLEDGE		(1 << 26)
136 #define	I2C_QUEUECMD_SEND_NAK_ON_LAST		(1 << 25)
137 #define	I2C_QUEUECMD_MULTI_MASTER		(1 << 23)
138 #define	I2C_QUEUECMD_CLOCK_HELD			(1 << 22)
139 #define	I2C_QUEUECMD_RETAIN_CLOCK		(1 << 21)
140 #define	I2C_QUEUECMD_POST_SEND_STOP		(1 << 20)
141 #define	I2C_QUEUECMD_PRE_SEND_START		(1 << 19)
142 #define	I2C_QUEUECMD_SLAVE_ADDRESS_ENABLE	(1 << 18)
143 #define	I2C_QUEUECMD_MASTER_MODE		(1 << 17)
144 #define	I2C_QUEUECMD_DIRECTION			(1 << 16)
145 #define	I2C_QUEUECMD_XFER_COUNT_MASK		0xffff
146 #define	I2C_QUEUECMD_XFER_COUNT_OFFSET		0
147 
148 #define	I2C_QUEUEDATA_DATA_MASK			0xffffffff
149 #define	I2C_QUEUEDATA_DATA_OFFSET		0
150 
151 #define	I2C_DATA_DATA_MASK			0xffffffff
152 #define	I2C_DATA_DATA_OFFSET			0
153 
154 #define	I2C_DEBUG0_DMAREQ			(1 << 31)
155 #define	I2C_DEBUG0_DMAENDCMD			(1 << 30)
156 #define	I2C_DEBUG0_DMAKICK			(1 << 29)
157 #define	I2C_DEBUG0_DMATERMINATE			(1 << 28)
158 #define	I2C_DEBUG0_STATE_VALUE_MASK		(0x3 << 26)
159 #define	I2C_DEBUG0_STATE_VALUE_OFFSET		26
160 #define	I2C_DEBUG0_DMA_STATE_MASK		(0x3ff << 16)
161 #define	I2C_DEBUG0_DMA_STATE_OFFSET		16
162 #define	I2C_DEBUG0_START_TOGGLE			(1 << 15)
163 #define	I2C_DEBUG0_STOP_TOGGLE			(1 << 14)
164 #define	I2C_DEBUG0_GRAB_TOGGLE			(1 << 13)
165 #define	I2C_DEBUG0_CHANGE_TOGGLE		(1 << 12)
166 #define	I2C_DEBUG0_STATE_LATCH			(1 << 11)
167 #define	I2C_DEBUG0_SLAVE_HOLD_CLK		(1 << 10)
168 #define	I2C_DEBUG0_STATE_STATE_MASK		0x3ff
169 #define	I2C_DEBUG0_STATE_STATE_OFFSET		0
170 
171 #define	I2C_DEBUG1_I2C_CLK_IN			(1 << 31)
172 #define	I2C_DEBUG1_I2C_DATA_IN			(1 << 30)
173 #define	I2C_DEBUG1_DMA_BYTE_ENABLES_MASK	(0xf << 24)
174 #define	I2C_DEBUG1_DMA_BYTE_ENABLES_OFFSET	24
175 #define	I2C_DEBUG1_CLK_GEN_STATE_MASK		(0xff << 16)
176 #define	I2C_DEBUG1_CLK_GEN_STATE_OFFSET		16
177 #define	I2C_DEBUG1_LST_MODE_MASK		(0x3 << 9)
178 #define	I2C_DEBUG1_LST_MODE_OFFSET		9
179 #define	I2C_DEBUG1_LOCAL_SLAVE_TEST		(1 << 8)
180 #define	I2C_DEBUG1_FORCE_CLK_ON			(1 << 4)
181 #define	I2C_DEBUG1_FORCE_ABR_LOSS		(1 << 3)
182 #define	I2C_DEBUG1_FORCE_RCV_ACK		(1 << 2)
183 #define	I2C_DEBUG1_FORCE_I2C_DATA_OE		(1 << 1)
184 #define	I2C_DEBUG1_FORCE_I2C_CLK_OE		(1 << 0)
185 
186 #define	I2C_VERSION_MAJOR_MASK			(0xff << 24)
187 #define	I2C_VERSION_MAJOR_OFFSET		24
188 #define	I2C_VERSION_MINOR_MASK			(0xff << 16)
189 #define	I2C_VERSION_MINOR_OFFSET		16
190 #define	I2C_VERSION_STEP_MASK			0xffff
191 #define	I2C_VERSION_STEP_OFFSET			0
192 
193 #endif	/* __MX28_REGS_I2C_H__ */
194