blob: d19cc1ee0620d5ae55e53dc4f10bb5c009e25a64 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/*
* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/*!
* @file flexcan.h
*
* @brief FlexCan definitions.
*
* @ingroup can
*/
#ifndef __CAN_FLEXCAN_H__
#define __CAN_FLEXCAN_H__
#include <linux/list.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/clk.h>
#include <linux/can.h>
#include <linux/can/core.h>
#include <linux/can/error.h>
#define FLEXCAN_DEVICE_NAME "FlexCAN"
struct can_mb_cs {
unsigned int time_stamp:16;
unsigned int length:4;
unsigned int rtr:1;
unsigned int ide:1;
unsigned int srr:1;
unsigned int nouse1:1;
unsigned int code:4;
unsigned int nouse2:4;
};
#define CAN_MB_RX_INACTIVE 0x0
#define CAN_MB_RX_EMPTY 0x4
#define CAN_MB_RX_FULL 0x2
#define CAN_MB_RX_OVERRUN 0x6
#define CAN_MB_RX_BUSY 0x1
#define CAN_MB_TX_INACTIVE 0x8
#define CAN_MB_TX_ABORT 0x9
#define CAN_MB_TX_ONCE 0xC
#define CAN_MB_TX_REMOTE 0xA
struct can_hw_mb {
union {
struct can_mb_cs cs;
unsigned int data;
} mb_cs;
unsigned int mb_id;
unsigned char mb_data[8];
};
#define CAN_HW_REG_MCR 0x00
#define CAN_HW_REG_CTRL 0x04
#define CAN_HW_REG_TIMER 0x08
#define CAN_HW_REG_RXGMASK 0x10
#define CAN_HW_REG_RX14MASK 0x14
#define CAN_HW_REG_RX15MASK 0x18
#define CAN_HW_REG_ECR 0x1C
#define CAN_HW_REG_ESR 0x20
#define CAN_HW_REG_IMASK2 0x24
#define CAN_HW_REG_IMASK1 0x28
#define CAN_HW_REG_IFLAG2 0x2C
#define CAN_HW_REG_IFLAG1 0x30
#define CAN_MB_BASE 0x0080
#define CAN_RXMASK_BASE 0x0880
#define CAN_FIFO_BASE 0xE0
#define __MCR_MDIS (1 << 31)
#define __MCR_FRZ (1 << 30)
#define __MCR_FEN (1 << 29)
#define __MCR_HALT (1 << 28)
#define __MCR_NOTRDY (1 << 27)
#define __MCR_WAK_MSK (1 << 26)
#define __MCR_SOFT_RST (1 << 25)
#define __MCR_FRZ_ACK (1 << 24)
#define __MCR_SLF_WAK (1 << 22)
#define __MCR_WRN_EN (1 << 21)
#define __MCR_LPM_ACK (1 << 20)
#define __MCR_WAK_SRC (1 << 19)
#define __MCR_DOZE (1 << 18)
#define __MCR_SRX_DIS (1 << 17)
#define __MCR_BCC (1 << 16)
#define __MCR_LPRIO_EN (1 << 13)
#define __MCR_AEN (1 << 12)
#define __MCR_MAX_IDAM_OFFSET 8
#define __MCR_MAX_IDAM_MASK (0x3 << __MCR_MAX_IDAM_OFFSET)
#define __MCR_MAX_IDAM_A (0x0 << __MCR_MAX_IDAM_OFFSET)
#define __MCR_MAX_IDAM_B (0x1 << __MCR_MAX_IDAM_OFFSET)
#define __MCR_MAX_IDAM_C (0x2 << __MCR_MAX_IDAM_OFFSET)
#define __MCR_MAX_IDAM_D (0x3 << __MCR_MAX_IDAM_OFFSET)
#define __MCR_MAX_MB_OFFSET 0
#define __MCR_MAX_MB_MASK (0x3F)
#define __CTRL_PRESDIV_OFFSET 24
#define __CTRL_PRESDIV_MASK (0xFF << __CTRL_PRESDIV_OFFSET)
#define __CTRL_RJW_OFFSET 22
#define __CTRL_RJW_MASK (0x3 << __CTRL_RJW_OFFSET)
#define __CTRL_PSEG1_OFFSET 19
#define __CTRL_PSEG1_MASK (0x7 << __CTRL_PSEG1_OFFSET)
#define __CTRL_PSEG2_OFFSET 16
#define __CTRL_PSEG2_MASK (0x7 << __CTRL_PSEG2_OFFSET)
#define __CTRL_BOFF_MSK (0x1 << 15)
#define __CTRL_ERR_MSK (0x1 << 14)
#define __CTRL_CLK_SRC (0x1 << 13)
#define __CTRL_LPB (0x1 << 12)
#define __CTRL_TWRN_MSK (0x1 << 11)
#define __CTRL_RWRN_MSK (0x1 << 10)
#define __CTRL_SMP (0x1 << 7)
#define __CTRL_BOFF_REC (0x1 << 6)
#define __CTRL_TSYN (0x1 << 5)
#define __CTRL_LBUF (0x1 << 4)
#define __CTRL_LOM (0x1 << 3)
#define __CTRL_PROPSEG_OFFSET 0
#define __CTRL_PROPSEG_MASK (0x7)
#define __ECR_TX_ERR_COUNTER(x) ((x) & 0xFF)
#define __ECR_RX_ERR_COUNTER(x) (((x) >> 8) & 0xFF)
#define __ECR_PASSIVE_THRESHOLD 128
#define __ECR_ACTIVE_THRESHOLD 96
#define __ESR_TWRN_INT (0x1 << 17)
#define __ESR_RWRN_INT (0x1 << 16)
#define __ESR_BIT1_ERR (0x1 << 15)
#define __ESR_BIT0_ERR (0x1 << 14)
#define __ESR_ACK_ERR (0x1 << 13)
#define __ESR_CRC_ERR (0x1 << 12)
#define __ESR_FRM_ERR (0x1 << 11)
#define __ESR_STF_ERR (0x1 << 10)
#define __ESR_TX_WRN (0x1 << 9)
#define __ESR_RX_WRN (0x1 << 8)
#define __ESR_IDLE (0x1 << 7)
#define __ESR_TXRX (0x1 << 6)
#define __ESR_FLT_CONF_OFF 4
#define __ESR_FLT_CONF_MASK (0x3 << __ESR_FLT_CONF_OFF)
#define __ESR_BOFF_INT (0x1 << 2)
#define __ESR_ERR_INT (0x1 << 1)
#define __ESR_WAK_INT (0x1)
#define __ESR_INTERRUPTS (__ESR_WAK_INT | __ESR_ERR_INT | \
__ESR_BOFF_INT | __ESR_TWRN_INT | \
__ESR_RWRN_INT)
#define __FIFO_OV_INT 0x0080
#define __FIFO_WARN_INT 0x0040
#define __FIFO_RDY_INT 0x0020
struct flexcan_device {
struct mutex mutex;
void *io_base;
struct can_hw_mb *hwmb;
unsigned int *rx_mask;
unsigned int xmit_mb;
unsigned int bitrate;
/* word 1 */
unsigned int br_presdiv:8;
unsigned int br_rjw:2;
unsigned int br_propseg:3;
unsigned int br_pseg1:3;
unsigned int br_pseg2:3;
unsigned int maxmb:6;
unsigned int xmit_maxmb:6;
unsigned int wd1_resv:1;
/* word 2 */
unsigned int fifo:1;
unsigned int wakeup:1;
unsigned int srx_dis:1;
unsigned int wak_src:1;
unsigned int bcc:1;
unsigned int lprio:1;
unsigned int abort:1;
unsigned int br_clksrc:1;
unsigned int loopback:1;
unsigned int smp:1;
unsigned int boff_rec:1;
unsigned int tsyn:1;
unsigned int listen:1;
unsigned int ext_msg:1;
unsigned int std_msg:1;
struct timer_list timer;
struct platform_device *dev;
struct regulator *core_reg;
struct regulator *io_reg;
struct clk *clk;
int irq;
};
#define FLEXCAN_MAX_FIFO_MB 8
#define FLEXCAN_MAX_MB 64
#define FLEXCAN_MAX_PRESDIV 256
#define FLEXCAN_MAX_RJW 4
#define FLEXCAN_MAX_PSEG1 8
#define FLEXCAN_MAX_PSEG2 8
#define FLEXCAN_MAX_PROPSEG 8
#define FLEXCAN_MAX_BITRATE 1000000
extern struct net_device *flexcan_device_alloc(struct platform_device *pdev,
void (*setup) (struct net_device
*dev));
extern void flexcan_device_free(struct platform_device *pdev);
extern void flexcan_mbm_init(struct flexcan_device *flexcan);
extern void flexcan_mbm_isr(struct net_device *dev);
extern int flexcan_mbm_xmit(struct flexcan_device *flexcan,
struct can_frame *frame);
#endif /* __CAN_FLEXCAN_H__ */
|
