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eb1f2930 HCE |
1 | #ifndef __INCLUDE_ATMEL_SSC_H |
2 | #define __INCLUDE_ATMEL_SSC_H | |
3 | ||
4 | #include <linux/platform_device.h> | |
5 | #include <linux/list.h> | |
b969afc8 | 6 | #include <linux/io.h> |
eb1f2930 | 7 | |
636036d2 BS |
8 | struct atmel_ssc_platform_data { |
9 | int use_dma; | |
c4027faf | 10 | int has_fslen_ext; |
636036d2 BS |
11 | }; |
12 | ||
eb1f2930 HCE |
13 | struct ssc_device { |
14 | struct list_head list; | |
10175b3b | 15 | dma_addr_t phybase; |
eb1f2930 HCE |
16 | void __iomem *regs; |
17 | struct platform_device *pdev; | |
636036d2 | 18 | struct atmel_ssc_platform_data *pdata; |
eb1f2930 HCE |
19 | struct clk *clk; |
20 | int user; | |
21 | int irq; | |
048d4ff8 | 22 | bool clk_from_rk_pin; |
eb1f2930 HCE |
23 | }; |
24 | ||
25 | struct ssc_device * __must_check ssc_request(unsigned int ssc_num); | |
26 | void ssc_free(struct ssc_device *ssc); | |
27 | ||
28 | /* SSC register offsets */ | |
29 | ||
30 | /* SSC Control Register */ | |
31 | #define SSC_CR 0x00000000 | |
32 | #define SSC_CR_RXDIS_SIZE 1 | |
33 | #define SSC_CR_RXDIS_OFFSET 1 | |
34 | #define SSC_CR_RXEN_SIZE 1 | |
35 | #define SSC_CR_RXEN_OFFSET 0 | |
36 | #define SSC_CR_SWRST_SIZE 1 | |
37 | #define SSC_CR_SWRST_OFFSET 15 | |
38 | #define SSC_CR_TXDIS_SIZE 1 | |
39 | #define SSC_CR_TXDIS_OFFSET 9 | |
40 | #define SSC_CR_TXEN_SIZE 1 | |
41 | #define SSC_CR_TXEN_OFFSET 8 | |
42 | ||
43 | /* SSC Clock Mode Register */ | |
44 | #define SSC_CMR 0x00000004 | |
45 | #define SSC_CMR_DIV_SIZE 12 | |
46 | #define SSC_CMR_DIV_OFFSET 0 | |
47 | ||
48 | /* SSC Receive Clock Mode Register */ | |
49 | #define SSC_RCMR 0x00000010 | |
50 | #define SSC_RCMR_CKG_SIZE 2 | |
51 | #define SSC_RCMR_CKG_OFFSET 6 | |
52 | #define SSC_RCMR_CKI_SIZE 1 | |
53 | #define SSC_RCMR_CKI_OFFSET 5 | |
54 | #define SSC_RCMR_CKO_SIZE 3 | |
55 | #define SSC_RCMR_CKO_OFFSET 2 | |
56 | #define SSC_RCMR_CKS_SIZE 2 | |
57 | #define SSC_RCMR_CKS_OFFSET 0 | |
58 | #define SSC_RCMR_PERIOD_SIZE 8 | |
59 | #define SSC_RCMR_PERIOD_OFFSET 24 | |
60 | #define SSC_RCMR_START_SIZE 4 | |
61 | #define SSC_RCMR_START_OFFSET 8 | |
62 | #define SSC_RCMR_STOP_SIZE 1 | |
63 | #define SSC_RCMR_STOP_OFFSET 12 | |
64 | #define SSC_RCMR_STTDLY_SIZE 8 | |
65 | #define SSC_RCMR_STTDLY_OFFSET 16 | |
66 | ||
67 | /* SSC Receive Frame Mode Register */ | |
68 | #define SSC_RFMR 0x00000014 | |
69 | #define SSC_RFMR_DATLEN_SIZE 5 | |
70 | #define SSC_RFMR_DATLEN_OFFSET 0 | |
71 | #define SSC_RFMR_DATNB_SIZE 4 | |
72 | #define SSC_RFMR_DATNB_OFFSET 8 | |
73 | #define SSC_RFMR_FSEDGE_SIZE 1 | |
74 | #define SSC_RFMR_FSEDGE_OFFSET 24 | |
dfaf5356 BS |
75 | /* |
76 | * The FSLEN_EXT exist on at91sam9rl, at91sam9g10, | |
77 | * at91sam9g20, and at91sam9g45 and newer SoCs | |
78 | */ | |
79 | #define SSC_RFMR_FSLEN_EXT_SIZE 4 | |
80 | #define SSC_RFMR_FSLEN_EXT_OFFSET 28 | |
eb1f2930 HCE |
81 | #define SSC_RFMR_FSLEN_SIZE 4 |
82 | #define SSC_RFMR_FSLEN_OFFSET 16 | |
83 | #define SSC_RFMR_FSOS_SIZE 4 | |
84 | #define SSC_RFMR_FSOS_OFFSET 20 | |
85 | #define SSC_RFMR_LOOP_SIZE 1 | |
86 | #define SSC_RFMR_LOOP_OFFSET 5 | |
87 | #define SSC_RFMR_MSBF_SIZE 1 | |
88 | #define SSC_RFMR_MSBF_OFFSET 7 | |
89 | ||
90 | /* SSC Transmit Clock Mode Register */ | |
91 | #define SSC_TCMR 0x00000018 | |
92 | #define SSC_TCMR_CKG_SIZE 2 | |
93 | #define SSC_TCMR_CKG_OFFSET 6 | |
94 | #define SSC_TCMR_CKI_SIZE 1 | |
95 | #define SSC_TCMR_CKI_OFFSET 5 | |
96 | #define SSC_TCMR_CKO_SIZE 3 | |
97 | #define SSC_TCMR_CKO_OFFSET 2 | |
98 | #define SSC_TCMR_CKS_SIZE 2 | |
99 | #define SSC_TCMR_CKS_OFFSET 0 | |
100 | #define SSC_TCMR_PERIOD_SIZE 8 | |
101 | #define SSC_TCMR_PERIOD_OFFSET 24 | |
102 | #define SSC_TCMR_START_SIZE 4 | |
103 | #define SSC_TCMR_START_OFFSET 8 | |
104 | #define SSC_TCMR_STTDLY_SIZE 8 | |
105 | #define SSC_TCMR_STTDLY_OFFSET 16 | |
106 | ||
107 | /* SSC Transmit Frame Mode Register */ | |
108 | #define SSC_TFMR 0x0000001c | |
109 | #define SSC_TFMR_DATDEF_SIZE 1 | |
110 | #define SSC_TFMR_DATDEF_OFFSET 5 | |
111 | #define SSC_TFMR_DATLEN_SIZE 5 | |
112 | #define SSC_TFMR_DATLEN_OFFSET 0 | |
113 | #define SSC_TFMR_DATNB_SIZE 4 | |
114 | #define SSC_TFMR_DATNB_OFFSET 8 | |
115 | #define SSC_TFMR_FSDEN_SIZE 1 | |
116 | #define SSC_TFMR_FSDEN_OFFSET 23 | |
117 | #define SSC_TFMR_FSEDGE_SIZE 1 | |
118 | #define SSC_TFMR_FSEDGE_OFFSET 24 | |
dfaf5356 BS |
119 | /* |
120 | * The FSLEN_EXT exist on at91sam9rl, at91sam9g10, | |
121 | * at91sam9g20, and at91sam9g45 and newer SoCs | |
122 | */ | |
123 | #define SSC_TFMR_FSLEN_EXT_SIZE 4 | |
124 | #define SSC_TFMR_FSLEN_EXT_OFFSET 28 | |
eb1f2930 HCE |
125 | #define SSC_TFMR_FSLEN_SIZE 4 |
126 | #define SSC_TFMR_FSLEN_OFFSET 16 | |
127 | #define SSC_TFMR_FSOS_SIZE 3 | |
128 | #define SSC_TFMR_FSOS_OFFSET 20 | |
129 | #define SSC_TFMR_MSBF_SIZE 1 | |
130 | #define SSC_TFMR_MSBF_OFFSET 7 | |
131 | ||
132 | /* SSC Receive Hold Register */ | |
133 | #define SSC_RHR 0x00000020 | |
134 | #define SSC_RHR_RDAT_SIZE 32 | |
135 | #define SSC_RHR_RDAT_OFFSET 0 | |
136 | ||
137 | /* SSC Transmit Hold Register */ | |
138 | #define SSC_THR 0x00000024 | |
139 | #define SSC_THR_TDAT_SIZE 32 | |
140 | #define SSC_THR_TDAT_OFFSET 0 | |
141 | ||
142 | /* SSC Receive Sync. Holding Register */ | |
143 | #define SSC_RSHR 0x00000030 | |
144 | #define SSC_RSHR_RSDAT_SIZE 16 | |
145 | #define SSC_RSHR_RSDAT_OFFSET 0 | |
146 | ||
147 | /* SSC Transmit Sync. Holding Register */ | |
148 | #define SSC_TSHR 0x00000034 | |
149 | #define SSC_TSHR_TSDAT_SIZE 16 | |
150 | #define SSC_TSHR_RSDAT_OFFSET 0 | |
151 | ||
152 | /* SSC Receive Compare 0 Register */ | |
153 | #define SSC_RC0R 0x00000038 | |
154 | #define SSC_RC0R_CP0_SIZE 16 | |
155 | #define SSC_RC0R_CP0_OFFSET 0 | |
156 | ||
157 | /* SSC Receive Compare 1 Register */ | |
158 | #define SSC_RC1R 0x0000003c | |
159 | #define SSC_RC1R_CP1_SIZE 16 | |
160 | #define SSC_RC1R_CP1_OFFSET 0 | |
161 | ||
162 | /* SSC Status Register */ | |
163 | #define SSC_SR 0x00000040 | |
164 | #define SSC_SR_CP0_SIZE 1 | |
165 | #define SSC_SR_CP0_OFFSET 8 | |
166 | #define SSC_SR_CP1_SIZE 1 | |
167 | #define SSC_SR_CP1_OFFSET 9 | |
168 | #define SSC_SR_ENDRX_SIZE 1 | |
169 | #define SSC_SR_ENDRX_OFFSET 6 | |
170 | #define SSC_SR_ENDTX_SIZE 1 | |
171 | #define SSC_SR_ENDTX_OFFSET 2 | |
172 | #define SSC_SR_OVRUN_SIZE 1 | |
173 | #define SSC_SR_OVRUN_OFFSET 5 | |
174 | #define SSC_SR_RXBUFF_SIZE 1 | |
175 | #define SSC_SR_RXBUFF_OFFSET 7 | |
176 | #define SSC_SR_RXEN_SIZE 1 | |
177 | #define SSC_SR_RXEN_OFFSET 17 | |
178 | #define SSC_SR_RXRDY_SIZE 1 | |
179 | #define SSC_SR_RXRDY_OFFSET 4 | |
180 | #define SSC_SR_RXSYN_SIZE 1 | |
181 | #define SSC_SR_RXSYN_OFFSET 11 | |
182 | #define SSC_SR_TXBUFE_SIZE 1 | |
183 | #define SSC_SR_TXBUFE_OFFSET 3 | |
184 | #define SSC_SR_TXEMPTY_SIZE 1 | |
185 | #define SSC_SR_TXEMPTY_OFFSET 1 | |
186 | #define SSC_SR_TXEN_SIZE 1 | |
187 | #define SSC_SR_TXEN_OFFSET 16 | |
188 | #define SSC_SR_TXRDY_SIZE 1 | |
189 | #define SSC_SR_TXRDY_OFFSET 0 | |
190 | #define SSC_SR_TXSYN_SIZE 1 | |
191 | #define SSC_SR_TXSYN_OFFSET 10 | |
192 | ||
193 | /* SSC Interrupt Enable Register */ | |
194 | #define SSC_IER 0x00000044 | |
195 | #define SSC_IER_CP0_SIZE 1 | |
196 | #define SSC_IER_CP0_OFFSET 8 | |
197 | #define SSC_IER_CP1_SIZE 1 | |
198 | #define SSC_IER_CP1_OFFSET 9 | |
199 | #define SSC_IER_ENDRX_SIZE 1 | |
200 | #define SSC_IER_ENDRX_OFFSET 6 | |
201 | #define SSC_IER_ENDTX_SIZE 1 | |
202 | #define SSC_IER_ENDTX_OFFSET 2 | |
203 | #define SSC_IER_OVRUN_SIZE 1 | |
204 | #define SSC_IER_OVRUN_OFFSET 5 | |
205 | #define SSC_IER_RXBUFF_SIZE 1 | |
206 | #define SSC_IER_RXBUFF_OFFSET 7 | |
207 | #define SSC_IER_RXRDY_SIZE 1 | |
208 | #define SSC_IER_RXRDY_OFFSET 4 | |
209 | #define SSC_IER_RXSYN_SIZE 1 | |
210 | #define SSC_IER_RXSYN_OFFSET 11 | |
211 | #define SSC_IER_TXBUFE_SIZE 1 | |
212 | #define SSC_IER_TXBUFE_OFFSET 3 | |
213 | #define SSC_IER_TXEMPTY_SIZE 1 | |
214 | #define SSC_IER_TXEMPTY_OFFSET 1 | |
215 | #define SSC_IER_TXRDY_SIZE 1 | |
216 | #define SSC_IER_TXRDY_OFFSET 0 | |
217 | #define SSC_IER_TXSYN_SIZE 1 | |
218 | #define SSC_IER_TXSYN_OFFSET 10 | |
219 | ||
220 | /* SSC Interrupt Disable Register */ | |
221 | #define SSC_IDR 0x00000048 | |
222 | #define SSC_IDR_CP0_SIZE 1 | |
223 | #define SSC_IDR_CP0_OFFSET 8 | |
224 | #define SSC_IDR_CP1_SIZE 1 | |
225 | #define SSC_IDR_CP1_OFFSET 9 | |
226 | #define SSC_IDR_ENDRX_SIZE 1 | |
227 | #define SSC_IDR_ENDRX_OFFSET 6 | |
228 | #define SSC_IDR_ENDTX_SIZE 1 | |
229 | #define SSC_IDR_ENDTX_OFFSET 2 | |
230 | #define SSC_IDR_OVRUN_SIZE 1 | |
231 | #define SSC_IDR_OVRUN_OFFSET 5 | |
232 | #define SSC_IDR_RXBUFF_SIZE 1 | |
233 | #define SSC_IDR_RXBUFF_OFFSET 7 | |
234 | #define SSC_IDR_RXRDY_SIZE 1 | |
235 | #define SSC_IDR_RXRDY_OFFSET 4 | |
236 | #define SSC_IDR_RXSYN_SIZE 1 | |
237 | #define SSC_IDR_RXSYN_OFFSET 11 | |
238 | #define SSC_IDR_TXBUFE_SIZE 1 | |
239 | #define SSC_IDR_TXBUFE_OFFSET 3 | |
240 | #define SSC_IDR_TXEMPTY_SIZE 1 | |
241 | #define SSC_IDR_TXEMPTY_OFFSET 1 | |
242 | #define SSC_IDR_TXRDY_SIZE 1 | |
243 | #define SSC_IDR_TXRDY_OFFSET 0 | |
244 | #define SSC_IDR_TXSYN_SIZE 1 | |
245 | #define SSC_IDR_TXSYN_OFFSET 10 | |
246 | ||
247 | /* SSC Interrupt Mask Register */ | |
248 | #define SSC_IMR 0x0000004c | |
249 | #define SSC_IMR_CP0_SIZE 1 | |
250 | #define SSC_IMR_CP0_OFFSET 8 | |
251 | #define SSC_IMR_CP1_SIZE 1 | |
252 | #define SSC_IMR_CP1_OFFSET 9 | |
253 | #define SSC_IMR_ENDRX_SIZE 1 | |
254 | #define SSC_IMR_ENDRX_OFFSET 6 | |
255 | #define SSC_IMR_ENDTX_SIZE 1 | |
256 | #define SSC_IMR_ENDTX_OFFSET 2 | |
257 | #define SSC_IMR_OVRUN_SIZE 1 | |
258 | #define SSC_IMR_OVRUN_OFFSET 5 | |
259 | #define SSC_IMR_RXBUFF_SIZE 1 | |
260 | #define SSC_IMR_RXBUFF_OFFSET 7 | |
261 | #define SSC_IMR_RXRDY_SIZE 1 | |
262 | #define SSC_IMR_RXRDY_OFFSET 4 | |
263 | #define SSC_IMR_RXSYN_SIZE 1 | |
264 | #define SSC_IMR_RXSYN_OFFSET 11 | |
265 | #define SSC_IMR_TXBUFE_SIZE 1 | |
266 | #define SSC_IMR_TXBUFE_OFFSET 3 | |
267 | #define SSC_IMR_TXEMPTY_SIZE 1 | |
268 | #define SSC_IMR_TXEMPTY_OFFSET 1 | |
269 | #define SSC_IMR_TXRDY_SIZE 1 | |
270 | #define SSC_IMR_TXRDY_OFFSET 0 | |
271 | #define SSC_IMR_TXSYN_SIZE 1 | |
272 | #define SSC_IMR_TXSYN_OFFSET 10 | |
273 | ||
274 | /* SSC PDC Receive Pointer Register */ | |
275 | #define SSC_PDC_RPR 0x00000100 | |
276 | ||
277 | /* SSC PDC Receive Counter Register */ | |
278 | #define SSC_PDC_RCR 0x00000104 | |
279 | ||
280 | /* SSC PDC Transmit Pointer Register */ | |
281 | #define SSC_PDC_TPR 0x00000108 | |
282 | ||
283 | /* SSC PDC Receive Next Pointer Register */ | |
284 | #define SSC_PDC_RNPR 0x00000110 | |
285 | ||
286 | /* SSC PDC Receive Next Counter Register */ | |
287 | #define SSC_PDC_RNCR 0x00000114 | |
288 | ||
289 | /* SSC PDC Transmit Counter Register */ | |
290 | #define SSC_PDC_TCR 0x0000010c | |
291 | ||
292 | /* SSC PDC Transmit Next Pointer Register */ | |
293 | #define SSC_PDC_TNPR 0x00000118 | |
294 | ||
295 | /* SSC PDC Transmit Next Counter Register */ | |
296 | #define SSC_PDC_TNCR 0x0000011c | |
297 | ||
298 | /* SSC PDC Transfer Control Register */ | |
299 | #define SSC_PDC_PTCR 0x00000120 | |
300 | #define SSC_PDC_PTCR_RXTDIS_SIZE 1 | |
301 | #define SSC_PDC_PTCR_RXTDIS_OFFSET 1 | |
302 | #define SSC_PDC_PTCR_RXTEN_SIZE 1 | |
303 | #define SSC_PDC_PTCR_RXTEN_OFFSET 0 | |
304 | #define SSC_PDC_PTCR_TXTDIS_SIZE 1 | |
305 | #define SSC_PDC_PTCR_TXTDIS_OFFSET 9 | |
306 | #define SSC_PDC_PTCR_TXTEN_SIZE 1 | |
307 | #define SSC_PDC_PTCR_TXTEN_OFFSET 8 | |
308 | ||
309 | /* SSC PDC Transfer Status Register */ | |
310 | #define SSC_PDC_PTSR 0x00000124 | |
311 | #define SSC_PDC_PTSR_RXTEN_SIZE 1 | |
312 | #define SSC_PDC_PTSR_RXTEN_OFFSET 0 | |
313 | #define SSC_PDC_PTSR_TXTEN_SIZE 1 | |
314 | #define SSC_PDC_PTSR_TXTEN_OFFSET 8 | |
315 | ||
316 | /* Bit manipulation macros */ | |
317 | #define SSC_BIT(name) \ | |
318 | (1 << SSC_##name##_OFFSET) | |
319 | #define SSC_BF(name, value) \ | |
320 | (((value) & ((1 << SSC_##name##_SIZE) - 1)) \ | |
321 | << SSC_##name##_OFFSET) | |
322 | #define SSC_BFEXT(name, value) \ | |
323 | (((value) >> SSC_##name##_OFFSET) \ | |
324 | & ((1 << SSC_##name##_SIZE) - 1)) | |
325 | #define SSC_BFINS(name, value, old) \ | |
326 | (((old) & ~(((1 << SSC_##name##_SIZE) - 1) \ | |
327 | << SSC_##name##_OFFSET)) | SSC_BF(name, value)) | |
328 | ||
329 | /* Register access macros */ | |
330 | #define ssc_readl(base, reg) __raw_readl(base + SSC_##reg) | |
331 | #define ssc_writel(base, reg, value) __raw_writel((value), base + SSC_##reg) | |
332 | ||
333 | #endif /* __INCLUDE_ATMEL_SSC_H */ |