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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
|
#ifndef __INCLUDE_ATMEL_SSC_H
#define __INCLUDE_ATMEL_SSC_H
#include <linux/platform_device.h>
#include <linux/list.h>
#include <linux/io.h>
struct atmel_ssc_platform_data {
int use_dma;
int has_fslen_ext;
};
struct ssc_device {
struct list_head list;
dma_addr_t phybase;
void __iomem *regs;
struct platform_device *pdev;
struct atmel_ssc_platform_data *pdata;
struct clk *clk;
int user;
int irq;
bool clk_from_rk_pin;
};
struct ssc_device * __must_check ssc_request(unsigned int ssc_num);
void ssc_free(struct ssc_device *ssc);
/* SSC register offsets */
/* SSC Control Register */
#define SSC_CR 0x00000000
#define SSC_CR_RXDIS_SIZE 1
#define SSC_CR_RXDIS_OFFSET 1
#define SSC_CR_RXEN_SIZE 1
#define SSC_CR_RXEN_OFFSET 0
#define SSC_CR_SWRST_SIZE 1
#define SSC_CR_SWRST_OFFSET 15
#define SSC_CR_TXDIS_SIZE 1
#define SSC_CR_TXDIS_OFFSET 9
#define SSC_CR_TXEN_SIZE 1
#define SSC_CR_TXEN_OFFSET 8
/* SSC Clock Mode Register */
#define SSC_CMR 0x00000004
#define SSC_CMR_DIV_SIZE 12
#define SSC_CMR_DIV_OFFSET 0
/* SSC Receive Clock Mode Register */
#define SSC_RCMR 0x00000010
#define SSC_RCMR_CKG_SIZE 2
#define SSC_RCMR_CKG_OFFSET 6
#define SSC_RCMR_CKI_SIZE 1
#define SSC_RCMR_CKI_OFFSET 5
#define SSC_RCMR_CKO_SIZE 3
#define SSC_RCMR_CKO_OFFSET 2
#define SSC_RCMR_CKS_SIZE 2
#define SSC_RCMR_CKS_OFFSET 0
#define SSC_RCMR_PERIOD_SIZE 8
#define SSC_RCMR_PERIOD_OFFSET 24
#define SSC_RCMR_START_SIZE 4
#define SSC_RCMR_START_OFFSET 8
#define SSC_RCMR_STOP_SIZE 1
#define SSC_RCMR_STOP_OFFSET 12
#define SSC_RCMR_STTDLY_SIZE 8
#define SSC_RCMR_STTDLY_OFFSET 16
/* SSC Receive Frame Mode Register */
#define SSC_RFMR 0x00000014
#define SSC_RFMR_DATLEN_SIZE 5
#define SSC_RFMR_DATLEN_OFFSET 0
#define SSC_RFMR_DATNB_SIZE 4
#define SSC_RFMR_DATNB_OFFSET 8
#define SSC_RFMR_FSEDGE_SIZE 1
#define SSC_RFMR_FSEDGE_OFFSET 24
/*
* The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
* at91sam9g20, and at91sam9g45 and newer SoCs
*/
#define SSC_RFMR_FSLEN_EXT_SIZE 4
#define SSC_RFMR_FSLEN_EXT_OFFSET 28
#define SSC_RFMR_FSLEN_SIZE 4
#define SSC_RFMR_FSLEN_OFFSET 16
#define SSC_RFMR_FSOS_SIZE 4
#define SSC_RFMR_FSOS_OFFSET 20
#define SSC_RFMR_LOOP_SIZE 1
#define SSC_RFMR_LOOP_OFFSET 5
#define SSC_RFMR_MSBF_SIZE 1
#define SSC_RFMR_MSBF_OFFSET 7
/* SSC Transmit Clock Mode Register */
#define SSC_TCMR 0x00000018
#define SSC_TCMR_CKG_SIZE 2
#define SSC_TCMR_CKG_OFFSET 6
#define SSC_TCMR_CKI_SIZE 1
#define SSC_TCMR_CKI_OFFSET 5
#define SSC_TCMR_CKO_SIZE 3
#define SSC_TCMR_CKO_OFFSET 2
#define SSC_TCMR_CKS_SIZE 2
#define SSC_TCMR_CKS_OFFSET 0
#define SSC_TCMR_PERIOD_SIZE 8
#define SSC_TCMR_PERIOD_OFFSET 24
#define SSC_TCMR_START_SIZE 4
#define SSC_TCMR_START_OFFSET 8
#define SSC_TCMR_STTDLY_SIZE 8
#define SSC_TCMR_STTDLY_OFFSET 16
/* SSC Transmit Frame Mode Register */
#define SSC_TFMR 0x0000001c
#define SSC_TFMR_DATDEF_SIZE 1
#define SSC_TFMR_DATDEF_OFFSET 5
#define SSC_TFMR_DATLEN_SIZE 5
#define SSC_TFMR_DATLEN_OFFSET 0
#define SSC_TFMR_DATNB_SIZE 4
#define SSC_TFMR_DATNB_OFFSET 8
#define SSC_TFMR_FSDEN_SIZE 1
#define SSC_TFMR_FSDEN_OFFSET 23
#define SSC_TFMR_FSEDGE_SIZE 1
#define SSC_TFMR_FSEDGE_OFFSET 24
/*
* The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
* at91sam9g20, and at91sam9g45 and newer SoCs
*/
#define SSC_TFMR_FSLEN_EXT_SIZE 4
#define SSC_TFMR_FSLEN_EXT_OFFSET 28
#define SSC_TFMR_FSLEN_SIZE 4
#define SSC_TFMR_FSLEN_OFFSET 16
#define SSC_TFMR_FSOS_SIZE 3
#define SSC_TFMR_FSOS_OFFSET 20
#define SSC_TFMR_MSBF_SIZE 1
#define SSC_TFMR_MSBF_OFFSET 7
/* SSC Receive Hold Register */
#define SSC_RHR 0x00000020
#define SSC_RHR_RDAT_SIZE 32
#define SSC_RHR_RDAT_OFFSET 0
/* SSC Transmit Hold Register */
#define SSC_THR 0x00000024
#define SSC_THR_TDAT_SIZE 32
#define SSC_THR_TDAT_OFFSET 0
/* SSC Receive Sync. Holding Register */
#define SSC_RSHR 0x00000030
#define SSC_RSHR_RSDAT_SIZE 16
#define SSC_RSHR_RSDAT_OFFSET 0
/* SSC Transmit Sync. Holding Register */
#define SSC_TSHR 0x00000034
#define SSC_TSHR_TSDAT_SIZE 16
#define SSC_TSHR_RSDAT_OFFSET 0
/* SSC Receive Compare 0 Register */
#define SSC_RC0R 0x00000038
#define SSC_RC0R_CP0_SIZE 16
#define SSC_RC0R_CP0_OFFSET 0
/* SSC Receive Compare 1 Register */
#define SSC_RC1R 0x0000003c
#define SSC_RC1R_CP1_SIZE 16
#define SSC_RC1R_CP1_OFFSET 0
/* SSC Status Register */
#define SSC_SR 0x00000040
#define SSC_SR_CP0_SIZE 1
#define SSC_SR_CP0_OFFSET 8
#define SSC_SR_CP1_SIZE 1
#define SSC_SR_CP1_OFFSET 9
#define SSC_SR_ENDRX_SIZE 1
#define SSC_SR_ENDRX_OFFSET 6
#define SSC_SR_ENDTX_SIZE 1
#define SSC_SR_ENDTX_OFFSET 2
#define SSC_SR_OVRUN_SIZE 1
#define SSC_SR_OVRUN_OFFSET 5
#define SSC_SR_RXBUFF_SIZE 1
#define SSC_SR_RXBUFF_OFFSET 7
#define SSC_SR_RXEN_SIZE 1
#define SSC_SR_RXEN_OFFSET 17
#define SSC_SR_RXRDY_SIZE 1
#define SSC_SR_RXRDY_OFFSET 4
#define SSC_SR_RXSYN_SIZE 1
#define SSC_SR_RXSYN_OFFSET 11
#define SSC_SR_TXBUFE_SIZE 1
#define SSC_SR_TXBUFE_OFFSET 3
#define SSC_SR_TXEMPTY_SIZE 1
#define SSC_SR_TXEMPTY_OFFSET 1
#define SSC_SR_TXEN_SIZE 1
#define SSC_SR_TXEN_OFFSET 16
#define SSC_SR_TXRDY_SIZE 1
#define SSC_SR_TXRDY_OFFSET 0
#define SSC_SR_TXSYN_SIZE 1
#define SSC_SR_TXSYN_OFFSET 10
/* SSC Interrupt Enable Register */
#define SSC_IER 0x00000044
#define SSC_IER_CP0_SIZE 1
#define SSC_IER_CP0_OFFSET 8
#define SSC_IER_CP1_SIZE 1
#define SSC_IER_CP1_OFFSET 9
#define SSC_IER_ENDRX_SIZE 1
#define SSC_IER_ENDRX_OFFSET 6
#define SSC_IER_ENDTX_SIZE 1
#define SSC_IER_ENDTX_OFFSET 2
#define SSC_IER_OVRUN_SIZE 1
#define SSC_IER_OVRUN_OFFSET 5
#define SSC_IER_RXBUFF_SIZE 1
#define SSC_IER_RXBUFF_OFFSET 7
#define SSC_IER_RXRDY_SIZE 1
#define SSC_IER_RXRDY_OFFSET 4
#define SSC_IER_RXSYN_SIZE 1
#define SSC_IER_RXSYN_OFFSET 11
#define SSC_IER_TXBUFE_SIZE 1
#define SSC_IER_TXBUFE_OFFSET 3
#define SSC_IER_TXEMPTY_SIZE 1
#define SSC_IER_TXEMPTY_OFFSET 1
#define SSC_IER_TXRDY_SIZE 1
#define SSC_IER_TXRDY_OFFSET 0
#define SSC_IER_TXSYN_SIZE 1
#define SSC_IER_TXSYN_OFFSET 10
/* SSC Interrupt Disable Register */
#define SSC_IDR 0x00000048
#define SSC_IDR_CP0_SIZE 1
#define SSC_IDR_CP0_OFFSET 8
#define SSC_IDR_CP1_SIZE 1
#define SSC_IDR_CP1_OFFSET 9
#define SSC_IDR_ENDRX_SIZE 1
#define SSC_IDR_ENDRX_OFFSET 6
#define SSC_IDR_ENDTX_SIZE 1
#define SSC_IDR_ENDTX_OFFSET 2
#define SSC_IDR_OVRUN_SIZE 1
#define SSC_IDR_OVRUN_OFFSET 5
#define SSC_IDR_RXBUFF_SIZE 1
#define SSC_IDR_RXBUFF_OFFSET 7
#define SSC_IDR_RXRDY_SIZE 1
#define SSC_IDR_RXRDY_OFFSET 4
#define SSC_IDR_RXSYN_SIZE 1
#define SSC_IDR_RXSYN_OFFSET 11
#define SSC_IDR_TXBUFE_SIZE 1
#define SSC_IDR_TXBUFE_OFFSET 3
#define SSC_IDR_TXEMPTY_SIZE 1
#define SSC_IDR_TXEMPTY_OFFSET 1
#define SSC_IDR_TXRDY_SIZE 1
#define SSC_IDR_TXRDY_OFFSET 0
#define SSC_IDR_TXSYN_SIZE 1
#define SSC_IDR_TXSYN_OFFSET 10
/* SSC Interrupt Mask Register */
#define SSC_IMR 0x0000004c
#define SSC_IMR_CP0_SIZE 1
#define SSC_IMR_CP0_OFFSET 8
#define SSC_IMR_CP1_SIZE 1
#define SSC_IMR_CP1_OFFSET 9
#define SSC_IMR_ENDRX_SIZE 1
#define SSC_IMR_ENDRX_OFFSET 6
#define SSC_IMR_ENDTX_SIZE 1
#define SSC_IMR_ENDTX_OFFSET 2
#define SSC_IMR_OVRUN_SIZE 1
#define SSC_IMR_OVRUN_OFFSET 5
#define SSC_IMR_RXBUFF_SIZE 1
#define SSC_IMR_RXBUFF_OFFSET 7
#define SSC_IMR_RXRDY_SIZE 1
#define SSC_IMR_RXRDY_OFFSET 4
#define SSC_IMR_RXSYN_SIZE 1
#define SSC_IMR_RXSYN_OFFSET 11
#define SSC_IMR_TXBUFE_SIZE 1
#define SSC_IMR_TXBUFE_OFFSET 3
#define SSC_IMR_TXEMPTY_SIZE 1
#define SSC_IMR_TXEMPTY_OFFSET 1
#define SSC_IMR_TXRDY_SIZE 1
#define SSC_IMR_TXRDY_OFFSET 0
#define SSC_IMR_TXSYN_SIZE 1
#define SSC_IMR_TXSYN_OFFSET 10
/* SSC PDC Receive Pointer Register */
#define SSC_PDC_RPR 0x00000100
/* SSC PDC Receive Counter Register */
#define SSC_PDC_RCR 0x00000104
/* SSC PDC Transmit Pointer Register */
#define SSC_PDC_TPR 0x00000108
/* SSC PDC Receive Next Pointer Register */
#define SSC_PDC_RNPR 0x00000110
/* SSC PDC Receive Next Counter Register */
#define SSC_PDC_RNCR 0x00000114
/* SSC PDC Transmit Counter Register */
#define SSC_PDC_TCR 0x0000010c
/* SSC PDC Transmit Next Pointer Register */
#define SSC_PDC_TNPR 0x00000118
/* SSC PDC Transmit Next Counter Register */
#define SSC_PDC_TNCR 0x0000011c
/* SSC PDC Transfer Control Register */
#define SSC_PDC_PTCR 0x00000120
#define SSC_PDC_PTCR_RXTDIS_SIZE 1
#define SSC_PDC_PTCR_RXTDIS_OFFSET 1
#define SSC_PDC_PTCR_RXTEN_SIZE 1
#define SSC_PDC_PTCR_RXTEN_OFFSET 0
#define SSC_PDC_PTCR_TXTDIS_SIZE 1
#define SSC_PDC_PTCR_TXTDIS_OFFSET 9
#define SSC_PDC_PTCR_TXTEN_SIZE 1
#define SSC_PDC_PTCR_TXTEN_OFFSET 8
/* SSC PDC Transfer Status Register */
#define SSC_PDC_PTSR 0x00000124
#define SSC_PDC_PTSR_RXTEN_SIZE 1
#define SSC_PDC_PTSR_RXTEN_OFFSET 0
#define SSC_PDC_PTSR_TXTEN_SIZE 1
#define SSC_PDC_PTSR_TXTEN_OFFSET 8
/* Bit manipulation macros */
#define SSC_BIT(name) \
(1 << SSC_##name##_OFFSET)
#define SSC_BF(name, value) \
(((value) & ((1 << SSC_##name##_SIZE) - 1)) \
<< SSC_##name##_OFFSET)
#define SSC_BFEXT(name, value) \
(((value) >> SSC_##name##_OFFSET) \
& ((1 << SSC_##name##_SIZE) - 1))
#define SSC_BFINS(name, value, old) \
(((old) & ~(((1 << SSC_##name##_SIZE) - 1) \
<< SSC_##name##_OFFSET)) | SSC_BF(name, value))
/* Register access macros */
#define ssc_readl(base, reg) __raw_readl(base + SSC_##reg)
#define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg)
#endif /* __INCLUDE_ATMEL_SSC_H */
|
