Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef __INCLUDE_ATMEL_SSC_H
2#define __INCLUDE_ATMEL_SSC_H
3
4#include <linux/platform_device.h>
5#include <linux/list.h>
6
7struct ssc_device {
8 struct list_head list;
9 void __iomem *regs;
10 struct platform_device *pdev;
11 struct clk *clk;
12 int user;
13 int irq;
14};
15
16struct ssc_device * __must_check ssc_request(unsigned int ssc_num);
17void ssc_free(struct ssc_device *ssc);
18
19/* SSC register offsets */
20
21/* SSC Control Register */
22#define SSC_CR 0x00000000
23#define SSC_CR_RXDIS_SIZE 1
24#define SSC_CR_RXDIS_OFFSET 1
25#define SSC_CR_RXEN_SIZE 1
26#define SSC_CR_RXEN_OFFSET 0
27#define SSC_CR_SWRST_SIZE 1
28#define SSC_CR_SWRST_OFFSET 15
29#define SSC_CR_TXDIS_SIZE 1
30#define SSC_CR_TXDIS_OFFSET 9
31#define SSC_CR_TXEN_SIZE 1
32#define SSC_CR_TXEN_OFFSET 8
33
34/* SSC Clock Mode Register */
35#define SSC_CMR 0x00000004
36#define SSC_CMR_DIV_SIZE 12
37#define SSC_CMR_DIV_OFFSET 0
38
39/* SSC Receive Clock Mode Register */
40#define SSC_RCMR 0x00000010
41#define SSC_RCMR_CKG_SIZE 2
42#define SSC_RCMR_CKG_OFFSET 6
43#define SSC_RCMR_CKI_SIZE 1
44#define SSC_RCMR_CKI_OFFSET 5
45#define SSC_RCMR_CKO_SIZE 3
46#define SSC_RCMR_CKO_OFFSET 2
47#define SSC_RCMR_CKS_SIZE 2
48#define SSC_RCMR_CKS_OFFSET 0
49#define SSC_RCMR_PERIOD_SIZE 8
50#define SSC_RCMR_PERIOD_OFFSET 24
51#define SSC_RCMR_START_SIZE 4
52#define SSC_RCMR_START_OFFSET 8
53#define SSC_RCMR_STOP_SIZE 1
54#define SSC_RCMR_STOP_OFFSET 12
55#define SSC_RCMR_STTDLY_SIZE 8
56#define SSC_RCMR_STTDLY_OFFSET 16
57
58/* SSC Receive Frame Mode Register */
59#define SSC_RFMR 0x00000014
60#define SSC_RFMR_DATLEN_SIZE 5
61#define SSC_RFMR_DATLEN_OFFSET 0
62#define SSC_RFMR_DATNB_SIZE 4
63#define SSC_RFMR_DATNB_OFFSET 8
64#define SSC_RFMR_FSEDGE_SIZE 1
65#define SSC_RFMR_FSEDGE_OFFSET 24
66#define SSC_RFMR_FSLEN_SIZE 4
67#define SSC_RFMR_FSLEN_OFFSET 16
68#define SSC_RFMR_FSOS_SIZE 4
69#define SSC_RFMR_FSOS_OFFSET 20
70#define SSC_RFMR_LOOP_SIZE 1
71#define SSC_RFMR_LOOP_OFFSET 5
72#define SSC_RFMR_MSBF_SIZE 1
73#define SSC_RFMR_MSBF_OFFSET 7
74
75/* SSC Transmit Clock Mode Register */
76#define SSC_TCMR 0x00000018
77#define SSC_TCMR_CKG_SIZE 2
78#define SSC_TCMR_CKG_OFFSET 6
79#define SSC_TCMR_CKI_SIZE 1
80#define SSC_TCMR_CKI_OFFSET 5
81#define SSC_TCMR_CKO_SIZE 3
82#define SSC_TCMR_CKO_OFFSET 2
83#define SSC_TCMR_CKS_SIZE 2
84#define SSC_TCMR_CKS_OFFSET 0
85#define SSC_TCMR_PERIOD_SIZE 8
86#define SSC_TCMR_PERIOD_OFFSET 24
87#define SSC_TCMR_START_SIZE 4
88#define SSC_TCMR_START_OFFSET 8
89#define SSC_TCMR_STTDLY_SIZE 8
90#define SSC_TCMR_STTDLY_OFFSET 16
91
92/* SSC Transmit Frame Mode Register */
93#define SSC_TFMR 0x0000001c
94#define SSC_TFMR_DATDEF_SIZE 1
95#define SSC_TFMR_DATDEF_OFFSET 5
96#define SSC_TFMR_DATLEN_SIZE 5
97#define SSC_TFMR_DATLEN_OFFSET 0
98#define SSC_TFMR_DATNB_SIZE 4
99#define SSC_TFMR_DATNB_OFFSET 8
100#define SSC_TFMR_FSDEN_SIZE 1
101#define SSC_TFMR_FSDEN_OFFSET 23
102#define SSC_TFMR_FSEDGE_SIZE 1
103#define SSC_TFMR_FSEDGE_OFFSET 24
104#define SSC_TFMR_FSLEN_SIZE 4
105#define SSC_TFMR_FSLEN_OFFSET 16
106#define SSC_TFMR_FSOS_SIZE 3
107#define SSC_TFMR_FSOS_OFFSET 20
108#define SSC_TFMR_MSBF_SIZE 1
109#define SSC_TFMR_MSBF_OFFSET 7
110
111/* SSC Receive Hold Register */
112#define SSC_RHR 0x00000020
113#define SSC_RHR_RDAT_SIZE 32
114#define SSC_RHR_RDAT_OFFSET 0
115
116/* SSC Transmit Hold Register */
117#define SSC_THR 0x00000024
118#define SSC_THR_TDAT_SIZE 32
119#define SSC_THR_TDAT_OFFSET 0
120
121/* SSC Receive Sync. Holding Register */
122#define SSC_RSHR 0x00000030
123#define SSC_RSHR_RSDAT_SIZE 16
124#define SSC_RSHR_RSDAT_OFFSET 0
125
126/* SSC Transmit Sync. Holding Register */
127#define SSC_TSHR 0x00000034
128#define SSC_TSHR_TSDAT_SIZE 16
129#define SSC_TSHR_RSDAT_OFFSET 0
130
131/* SSC Receive Compare 0 Register */
132#define SSC_RC0R 0x00000038
133#define SSC_RC0R_CP0_SIZE 16
134#define SSC_RC0R_CP0_OFFSET 0
135
136/* SSC Receive Compare 1 Register */
137#define SSC_RC1R 0x0000003c
138#define SSC_RC1R_CP1_SIZE 16
139#define SSC_RC1R_CP1_OFFSET 0
140
141/* SSC Status Register */
142#define SSC_SR 0x00000040
143#define SSC_SR_CP0_SIZE 1
144#define SSC_SR_CP0_OFFSET 8
145#define SSC_SR_CP1_SIZE 1
146#define SSC_SR_CP1_OFFSET 9
147#define SSC_SR_ENDRX_SIZE 1
148#define SSC_SR_ENDRX_OFFSET 6
149#define SSC_SR_ENDTX_SIZE 1
150#define SSC_SR_ENDTX_OFFSET 2
151#define SSC_SR_OVRUN_SIZE 1
152#define SSC_SR_OVRUN_OFFSET 5
153#define SSC_SR_RXBUFF_SIZE 1
154#define SSC_SR_RXBUFF_OFFSET 7
155#define SSC_SR_RXEN_SIZE 1
156#define SSC_SR_RXEN_OFFSET 17
157#define SSC_SR_RXRDY_SIZE 1
158#define SSC_SR_RXRDY_OFFSET 4
159#define SSC_SR_RXSYN_SIZE 1
160#define SSC_SR_RXSYN_OFFSET 11
161#define SSC_SR_TXBUFE_SIZE 1
162#define SSC_SR_TXBUFE_OFFSET 3
163#define SSC_SR_TXEMPTY_SIZE 1
164#define SSC_SR_TXEMPTY_OFFSET 1
165#define SSC_SR_TXEN_SIZE 1
166#define SSC_SR_TXEN_OFFSET 16
167#define SSC_SR_TXRDY_SIZE 1
168#define SSC_SR_TXRDY_OFFSET 0
169#define SSC_SR_TXSYN_SIZE 1
170#define SSC_SR_TXSYN_OFFSET 10
171
172/* SSC Interrupt Enable Register */
173#define SSC_IER 0x00000044
174#define SSC_IER_CP0_SIZE 1
175#define SSC_IER_CP0_OFFSET 8
176#define SSC_IER_CP1_SIZE 1
177#define SSC_IER_CP1_OFFSET 9
178#define SSC_IER_ENDRX_SIZE 1
179#define SSC_IER_ENDRX_OFFSET 6
180#define SSC_IER_ENDTX_SIZE 1
181#define SSC_IER_ENDTX_OFFSET 2
182#define SSC_IER_OVRUN_SIZE 1
183#define SSC_IER_OVRUN_OFFSET 5
184#define SSC_IER_RXBUFF_SIZE 1
185#define SSC_IER_RXBUFF_OFFSET 7
186#define SSC_IER_RXRDY_SIZE 1
187#define SSC_IER_RXRDY_OFFSET 4
188#define SSC_IER_RXSYN_SIZE 1
189#define SSC_IER_RXSYN_OFFSET 11
190#define SSC_IER_TXBUFE_SIZE 1
191#define SSC_IER_TXBUFE_OFFSET 3
192#define SSC_IER_TXEMPTY_SIZE 1
193#define SSC_IER_TXEMPTY_OFFSET 1
194#define SSC_IER_TXRDY_SIZE 1
195#define SSC_IER_TXRDY_OFFSET 0
196#define SSC_IER_TXSYN_SIZE 1
197#define SSC_IER_TXSYN_OFFSET 10
198
199/* SSC Interrupt Disable Register */
200#define SSC_IDR 0x00000048
201#define SSC_IDR_CP0_SIZE 1
202#define SSC_IDR_CP0_OFFSET 8
203#define SSC_IDR_CP1_SIZE 1
204#define SSC_IDR_CP1_OFFSET 9
205#define SSC_IDR_ENDRX_SIZE 1
206#define SSC_IDR_ENDRX_OFFSET 6
207#define SSC_IDR_ENDTX_SIZE 1
208#define SSC_IDR_ENDTX_OFFSET 2
209#define SSC_IDR_OVRUN_SIZE 1
210#define SSC_IDR_OVRUN_OFFSET 5
211#define SSC_IDR_RXBUFF_SIZE 1
212#define SSC_IDR_RXBUFF_OFFSET 7
213#define SSC_IDR_RXRDY_SIZE 1
214#define SSC_IDR_RXRDY_OFFSET 4
215#define SSC_IDR_RXSYN_SIZE 1
216#define SSC_IDR_RXSYN_OFFSET 11
217#define SSC_IDR_TXBUFE_SIZE 1
218#define SSC_IDR_TXBUFE_OFFSET 3
219#define SSC_IDR_TXEMPTY_SIZE 1
220#define SSC_IDR_TXEMPTY_OFFSET 1
221#define SSC_IDR_TXRDY_SIZE 1
222#define SSC_IDR_TXRDY_OFFSET 0
223#define SSC_IDR_TXSYN_SIZE 1
224#define SSC_IDR_TXSYN_OFFSET 10
225
226/* SSC Interrupt Mask Register */
227#define SSC_IMR 0x0000004c
228#define SSC_IMR_CP0_SIZE 1
229#define SSC_IMR_CP0_OFFSET 8
230#define SSC_IMR_CP1_SIZE 1
231#define SSC_IMR_CP1_OFFSET 9
232#define SSC_IMR_ENDRX_SIZE 1
233#define SSC_IMR_ENDRX_OFFSET 6
234#define SSC_IMR_ENDTX_SIZE 1
235#define SSC_IMR_ENDTX_OFFSET 2
236#define SSC_IMR_OVRUN_SIZE 1
237#define SSC_IMR_OVRUN_OFFSET 5
238#define SSC_IMR_RXBUFF_SIZE 1
239#define SSC_IMR_RXBUFF_OFFSET 7
240#define SSC_IMR_RXRDY_SIZE 1
241#define SSC_IMR_RXRDY_OFFSET 4
242#define SSC_IMR_RXSYN_SIZE 1
243#define SSC_IMR_RXSYN_OFFSET 11
244#define SSC_IMR_TXBUFE_SIZE 1
245#define SSC_IMR_TXBUFE_OFFSET 3
246#define SSC_IMR_TXEMPTY_SIZE 1
247#define SSC_IMR_TXEMPTY_OFFSET 1
248#define SSC_IMR_TXRDY_SIZE 1
249#define SSC_IMR_TXRDY_OFFSET 0
250#define SSC_IMR_TXSYN_SIZE 1
251#define SSC_IMR_TXSYN_OFFSET 10
252
253/* SSC PDC Receive Pointer Register */
254#define SSC_PDC_RPR 0x00000100
255
256/* SSC PDC Receive Counter Register */
257#define SSC_PDC_RCR 0x00000104
258
259/* SSC PDC Transmit Pointer Register */
260#define SSC_PDC_TPR 0x00000108
261
262/* SSC PDC Receive Next Pointer Register */
263#define SSC_PDC_RNPR 0x00000110
264
265/* SSC PDC Receive Next Counter Register */
266#define SSC_PDC_RNCR 0x00000114
267
268/* SSC PDC Transmit Counter Register */
269#define SSC_PDC_TCR 0x0000010c
270
271/* SSC PDC Transmit Next Pointer Register */
272#define SSC_PDC_TNPR 0x00000118
273
274/* SSC PDC Transmit Next Counter Register */
275#define SSC_PDC_TNCR 0x0000011c
276
277/* SSC PDC Transfer Control Register */
278#define SSC_PDC_PTCR 0x00000120
279#define SSC_PDC_PTCR_RXTDIS_SIZE 1
280#define SSC_PDC_PTCR_RXTDIS_OFFSET 1
281#define SSC_PDC_PTCR_RXTEN_SIZE 1
282#define SSC_PDC_PTCR_RXTEN_OFFSET 0
283#define SSC_PDC_PTCR_TXTDIS_SIZE 1
284#define SSC_PDC_PTCR_TXTDIS_OFFSET 9
285#define SSC_PDC_PTCR_TXTEN_SIZE 1
286#define SSC_PDC_PTCR_TXTEN_OFFSET 8
287
288/* SSC PDC Transfer Status Register */
289#define SSC_PDC_PTSR 0x00000124
290#define SSC_PDC_PTSR_RXTEN_SIZE 1
291#define SSC_PDC_PTSR_RXTEN_OFFSET 0
292#define SSC_PDC_PTSR_TXTEN_SIZE 1
293#define SSC_PDC_PTSR_TXTEN_OFFSET 8
294
295/* Bit manipulation macros */
296#define SSC_BIT(name) \
297 (1 << SSC_##name##_OFFSET)
298#define SSC_BF(name, value) \
299 (((value) & ((1 << SSC_##name##_SIZE) - 1)) \
300 << SSC_##name##_OFFSET)
301#define SSC_BFEXT(name, value) \
302 (((value) >> SSC_##name##_OFFSET) \
303 & ((1 << SSC_##name##_SIZE) - 1))
304#define SSC_BFINS(name, value, old) \
305 (((old) & ~(((1 << SSC_##name##_SIZE) - 1) \
306 << SSC_##name##_OFFSET)) | SSC_BF(name, value))
307
308/* Register access macros */
309#define ssc_readl(base, reg) __raw_readl(base + SSC_##reg)
310#define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg)
311
312#endif /* __INCLUDE_ATMEL_SSC_H */