xref: /openbmc/linux/include/linux/atmel-ssc.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __INCLUDE_ATMEL_SSC_H
3 #define __INCLUDE_ATMEL_SSC_H
4 
5 #include <linux/platform_device.h>
6 #include <linux/list.h>
7 #include <linux/io.h>
8 
9 struct atmel_ssc_platform_data {
10 	int			use_dma;
11 	int			has_fslen_ext;
12 };
13 
14 struct ssc_device {
15 	struct list_head	list;
16 	dma_addr_t		phybase;
17 	void __iomem		*regs;
18 	struct platform_device	*pdev;
19 	struct atmel_ssc_platform_data *pdata;
20 	struct clk		*clk;
21 	int			user;
22 	int			irq;
23 	bool			clk_from_rk_pin;
24 	bool			sound_dai;
25 };
26 
27 struct ssc_device * __must_check ssc_request(unsigned int ssc_num);
28 void ssc_free(struct ssc_device *ssc);
29 
30 /* SSC register offsets */
31 
32 /* SSC Control Register */
33 #define SSC_CR				0x00000000
34 #define SSC_CR_RXDIS_SIZE			 1
35 #define SSC_CR_RXDIS_OFFSET			 1
36 #define SSC_CR_RXEN_SIZE			 1
37 #define SSC_CR_RXEN_OFFSET			 0
38 #define SSC_CR_SWRST_SIZE			 1
39 #define SSC_CR_SWRST_OFFSET			15
40 #define SSC_CR_TXDIS_SIZE			 1
41 #define SSC_CR_TXDIS_OFFSET			 9
42 #define SSC_CR_TXEN_SIZE			 1
43 #define SSC_CR_TXEN_OFFSET			 8
44 
45 /* SSC Clock Mode Register */
46 #define SSC_CMR				0x00000004
47 #define SSC_CMR_DIV_SIZE			12
48 #define SSC_CMR_DIV_OFFSET			 0
49 
50 /* SSC Receive Clock Mode Register */
51 #define SSC_RCMR			0x00000010
52 #define SSC_RCMR_CKG_SIZE			 2
53 #define SSC_RCMR_CKG_OFFSET			 6
54 #define SSC_RCMR_CKI_SIZE			 1
55 #define SSC_RCMR_CKI_OFFSET			 5
56 #define SSC_RCMR_CKO_SIZE			 3
57 #define SSC_RCMR_CKO_OFFSET			 2
58 #define SSC_RCMR_CKS_SIZE			 2
59 #define SSC_RCMR_CKS_OFFSET			 0
60 #define SSC_RCMR_PERIOD_SIZE			 8
61 #define SSC_RCMR_PERIOD_OFFSET			24
62 #define SSC_RCMR_START_SIZE			 4
63 #define SSC_RCMR_START_OFFSET			 8
64 #define SSC_RCMR_STOP_SIZE			 1
65 #define SSC_RCMR_STOP_OFFSET			12
66 #define SSC_RCMR_STTDLY_SIZE			 8
67 #define SSC_RCMR_STTDLY_OFFSET			16
68 
69 /* SSC Receive Frame Mode Register */
70 #define SSC_RFMR			0x00000014
71 #define SSC_RFMR_DATLEN_SIZE			 5
72 #define SSC_RFMR_DATLEN_OFFSET			 0
73 #define SSC_RFMR_DATNB_SIZE			 4
74 #define SSC_RFMR_DATNB_OFFSET			 8
75 #define SSC_RFMR_FSEDGE_SIZE			 1
76 #define SSC_RFMR_FSEDGE_OFFSET			24
77 /*
78  * The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
79  * at91sam9g20, and at91sam9g45 and newer SoCs
80  */
81 #define SSC_RFMR_FSLEN_EXT_SIZE			 4
82 #define SSC_RFMR_FSLEN_EXT_OFFSET		28
83 #define SSC_RFMR_FSLEN_SIZE			 4
84 #define SSC_RFMR_FSLEN_OFFSET			16
85 #define SSC_RFMR_FSOS_SIZE			 4
86 #define SSC_RFMR_FSOS_OFFSET			20
87 #define SSC_RFMR_LOOP_SIZE			 1
88 #define SSC_RFMR_LOOP_OFFSET			 5
89 #define SSC_RFMR_MSBF_SIZE			 1
90 #define SSC_RFMR_MSBF_OFFSET			 7
91 
92 /* SSC Transmit Clock Mode Register */
93 #define SSC_TCMR			0x00000018
94 #define SSC_TCMR_CKG_SIZE			 2
95 #define SSC_TCMR_CKG_OFFSET			 6
96 #define SSC_TCMR_CKI_SIZE			 1
97 #define SSC_TCMR_CKI_OFFSET			 5
98 #define SSC_TCMR_CKO_SIZE			 3
99 #define SSC_TCMR_CKO_OFFSET			 2
100 #define SSC_TCMR_CKS_SIZE			 2
101 #define SSC_TCMR_CKS_OFFSET			 0
102 #define SSC_TCMR_PERIOD_SIZE			 8
103 #define SSC_TCMR_PERIOD_OFFSET			24
104 #define SSC_TCMR_START_SIZE			 4
105 #define SSC_TCMR_START_OFFSET			 8
106 #define SSC_TCMR_STTDLY_SIZE			 8
107 #define SSC_TCMR_STTDLY_OFFSET			16
108 
109 /* SSC Transmit Frame Mode Register */
110 #define SSC_TFMR			0x0000001c
111 #define SSC_TFMR_DATDEF_SIZE			 1
112 #define SSC_TFMR_DATDEF_OFFSET			 5
113 #define SSC_TFMR_DATLEN_SIZE			 5
114 #define SSC_TFMR_DATLEN_OFFSET			 0
115 #define SSC_TFMR_DATNB_SIZE			 4
116 #define SSC_TFMR_DATNB_OFFSET			 8
117 #define SSC_TFMR_FSDEN_SIZE			 1
118 #define SSC_TFMR_FSDEN_OFFSET			23
119 #define SSC_TFMR_FSEDGE_SIZE			 1
120 #define SSC_TFMR_FSEDGE_OFFSET			24
121 /*
122  * The FSLEN_EXT exist on at91sam9rl, at91sam9g10,
123  * at91sam9g20, and at91sam9g45 and newer SoCs
124  */
125 #define SSC_TFMR_FSLEN_EXT_SIZE			 4
126 #define SSC_TFMR_FSLEN_EXT_OFFSET		28
127 #define SSC_TFMR_FSLEN_SIZE			 4
128 #define SSC_TFMR_FSLEN_OFFSET			16
129 #define SSC_TFMR_FSOS_SIZE			 3
130 #define SSC_TFMR_FSOS_OFFSET			20
131 #define SSC_TFMR_MSBF_SIZE			 1
132 #define SSC_TFMR_MSBF_OFFSET			 7
133 
134 /* SSC Receive Hold Register */
135 #define SSC_RHR				0x00000020
136 #define SSC_RHR_RDAT_SIZE			32
137 #define SSC_RHR_RDAT_OFFSET			 0
138 
139 /* SSC Transmit Hold Register */
140 #define SSC_THR				0x00000024
141 #define SSC_THR_TDAT_SIZE			32
142 #define SSC_THR_TDAT_OFFSET			 0
143 
144 /* SSC Receive Sync. Holding Register */
145 #define SSC_RSHR			0x00000030
146 #define SSC_RSHR_RSDAT_SIZE			16
147 #define SSC_RSHR_RSDAT_OFFSET			 0
148 
149 /* SSC Transmit Sync. Holding Register */
150 #define SSC_TSHR			0x00000034
151 #define SSC_TSHR_TSDAT_SIZE			16
152 #define SSC_TSHR_RSDAT_OFFSET			 0
153 
154 /* SSC Receive Compare 0 Register */
155 #define SSC_RC0R			0x00000038
156 #define SSC_RC0R_CP0_SIZE			16
157 #define SSC_RC0R_CP0_OFFSET			 0
158 
159 /* SSC Receive Compare 1 Register */
160 #define SSC_RC1R			0x0000003c
161 #define SSC_RC1R_CP1_SIZE			16
162 #define SSC_RC1R_CP1_OFFSET			 0
163 
164 /* SSC Status Register */
165 #define SSC_SR				0x00000040
166 #define SSC_SR_CP0_SIZE				 1
167 #define SSC_SR_CP0_OFFSET			 8
168 #define SSC_SR_CP1_SIZE				 1
169 #define SSC_SR_CP1_OFFSET			 9
170 #define SSC_SR_ENDRX_SIZE			 1
171 #define SSC_SR_ENDRX_OFFSET			 6
172 #define SSC_SR_ENDTX_SIZE			 1
173 #define SSC_SR_ENDTX_OFFSET			 2
174 #define SSC_SR_OVRUN_SIZE			 1
175 #define SSC_SR_OVRUN_OFFSET			 5
176 #define SSC_SR_RXBUFF_SIZE			 1
177 #define SSC_SR_RXBUFF_OFFSET			 7
178 #define SSC_SR_RXEN_SIZE			 1
179 #define SSC_SR_RXEN_OFFSET			17
180 #define SSC_SR_RXRDY_SIZE			 1
181 #define SSC_SR_RXRDY_OFFSET			 4
182 #define SSC_SR_RXSYN_SIZE			 1
183 #define SSC_SR_RXSYN_OFFSET			11
184 #define SSC_SR_TXBUFE_SIZE			 1
185 #define SSC_SR_TXBUFE_OFFSET			 3
186 #define SSC_SR_TXEMPTY_SIZE			 1
187 #define SSC_SR_TXEMPTY_OFFSET			 1
188 #define SSC_SR_TXEN_SIZE			 1
189 #define SSC_SR_TXEN_OFFSET			16
190 #define SSC_SR_TXRDY_SIZE			 1
191 #define SSC_SR_TXRDY_OFFSET			 0
192 #define SSC_SR_TXSYN_SIZE			 1
193 #define SSC_SR_TXSYN_OFFSET			10
194 
195 /* SSC Interrupt Enable Register */
196 #define SSC_IER				0x00000044
197 #define SSC_IER_CP0_SIZE			 1
198 #define SSC_IER_CP0_OFFSET			 8
199 #define SSC_IER_CP1_SIZE			 1
200 #define SSC_IER_CP1_OFFSET			 9
201 #define SSC_IER_ENDRX_SIZE			 1
202 #define SSC_IER_ENDRX_OFFSET			 6
203 #define SSC_IER_ENDTX_SIZE			 1
204 #define SSC_IER_ENDTX_OFFSET			 2
205 #define SSC_IER_OVRUN_SIZE			 1
206 #define SSC_IER_OVRUN_OFFSET			 5
207 #define SSC_IER_RXBUFF_SIZE			 1
208 #define SSC_IER_RXBUFF_OFFSET			 7
209 #define SSC_IER_RXRDY_SIZE			 1
210 #define SSC_IER_RXRDY_OFFSET			 4
211 #define SSC_IER_RXSYN_SIZE			 1
212 #define SSC_IER_RXSYN_OFFSET			11
213 #define SSC_IER_TXBUFE_SIZE			 1
214 #define SSC_IER_TXBUFE_OFFSET			 3
215 #define SSC_IER_TXEMPTY_SIZE			 1
216 #define SSC_IER_TXEMPTY_OFFSET			 1
217 #define SSC_IER_TXRDY_SIZE			 1
218 #define SSC_IER_TXRDY_OFFSET			 0
219 #define SSC_IER_TXSYN_SIZE			 1
220 #define SSC_IER_TXSYN_OFFSET			10
221 
222 /* SSC Interrupt Disable Register */
223 #define SSC_IDR				0x00000048
224 #define SSC_IDR_CP0_SIZE			 1
225 #define SSC_IDR_CP0_OFFSET			 8
226 #define SSC_IDR_CP1_SIZE			 1
227 #define SSC_IDR_CP1_OFFSET			 9
228 #define SSC_IDR_ENDRX_SIZE			 1
229 #define SSC_IDR_ENDRX_OFFSET			 6
230 #define SSC_IDR_ENDTX_SIZE			 1
231 #define SSC_IDR_ENDTX_OFFSET			 2
232 #define SSC_IDR_OVRUN_SIZE			 1
233 #define SSC_IDR_OVRUN_OFFSET			 5
234 #define SSC_IDR_RXBUFF_SIZE			 1
235 #define SSC_IDR_RXBUFF_OFFSET			 7
236 #define SSC_IDR_RXRDY_SIZE			 1
237 #define SSC_IDR_RXRDY_OFFSET			 4
238 #define SSC_IDR_RXSYN_SIZE			 1
239 #define SSC_IDR_RXSYN_OFFSET			11
240 #define SSC_IDR_TXBUFE_SIZE			 1
241 #define SSC_IDR_TXBUFE_OFFSET			 3
242 #define SSC_IDR_TXEMPTY_SIZE			 1
243 #define SSC_IDR_TXEMPTY_OFFSET			 1
244 #define SSC_IDR_TXRDY_SIZE			 1
245 #define SSC_IDR_TXRDY_OFFSET			 0
246 #define SSC_IDR_TXSYN_SIZE			 1
247 #define SSC_IDR_TXSYN_OFFSET			10
248 
249 /* SSC Interrupt Mask Register */
250 #define SSC_IMR				0x0000004c
251 #define SSC_IMR_CP0_SIZE			 1
252 #define SSC_IMR_CP0_OFFSET			 8
253 #define SSC_IMR_CP1_SIZE			 1
254 #define SSC_IMR_CP1_OFFSET			 9
255 #define SSC_IMR_ENDRX_SIZE			 1
256 #define SSC_IMR_ENDRX_OFFSET			 6
257 #define SSC_IMR_ENDTX_SIZE			 1
258 #define SSC_IMR_ENDTX_OFFSET			 2
259 #define SSC_IMR_OVRUN_SIZE			 1
260 #define SSC_IMR_OVRUN_OFFSET			 5
261 #define SSC_IMR_RXBUFF_SIZE			 1
262 #define SSC_IMR_RXBUFF_OFFSET			 7
263 #define SSC_IMR_RXRDY_SIZE			 1
264 #define SSC_IMR_RXRDY_OFFSET			 4
265 #define SSC_IMR_RXSYN_SIZE			 1
266 #define SSC_IMR_RXSYN_OFFSET			11
267 #define SSC_IMR_TXBUFE_SIZE			 1
268 #define SSC_IMR_TXBUFE_OFFSET			 3
269 #define SSC_IMR_TXEMPTY_SIZE			 1
270 #define SSC_IMR_TXEMPTY_OFFSET			 1
271 #define SSC_IMR_TXRDY_SIZE			 1
272 #define SSC_IMR_TXRDY_OFFSET			 0
273 #define SSC_IMR_TXSYN_SIZE			 1
274 #define SSC_IMR_TXSYN_OFFSET			10
275 
276 /* SSC PDC Receive Pointer Register */
277 #define SSC_PDC_RPR			0x00000100
278 
279 /* SSC PDC Receive Counter Register */
280 #define SSC_PDC_RCR			0x00000104
281 
282 /* SSC PDC Transmit Pointer Register */
283 #define SSC_PDC_TPR			0x00000108
284 
285 /* SSC PDC Receive Next Pointer Register */
286 #define SSC_PDC_RNPR			0x00000110
287 
288 /* SSC PDC Receive Next Counter Register */
289 #define SSC_PDC_RNCR			0x00000114
290 
291 /* SSC PDC Transmit Counter Register */
292 #define SSC_PDC_TCR			0x0000010c
293 
294 /* SSC PDC Transmit Next Pointer Register */
295 #define SSC_PDC_TNPR			0x00000118
296 
297 /* SSC PDC Transmit Next Counter Register */
298 #define SSC_PDC_TNCR			0x0000011c
299 
300 /* SSC PDC Transfer Control Register */
301 #define SSC_PDC_PTCR			0x00000120
302 #define SSC_PDC_PTCR_RXTDIS_SIZE		 1
303 #define SSC_PDC_PTCR_RXTDIS_OFFSET		 1
304 #define SSC_PDC_PTCR_RXTEN_SIZE			 1
305 #define SSC_PDC_PTCR_RXTEN_OFFSET		 0
306 #define SSC_PDC_PTCR_TXTDIS_SIZE		 1
307 #define SSC_PDC_PTCR_TXTDIS_OFFSET		 9
308 #define SSC_PDC_PTCR_TXTEN_SIZE			 1
309 #define SSC_PDC_PTCR_TXTEN_OFFSET		 8
310 
311 /* SSC PDC Transfer Status Register */
312 #define SSC_PDC_PTSR			0x00000124
313 #define SSC_PDC_PTSR_RXTEN_SIZE			 1
314 #define SSC_PDC_PTSR_RXTEN_OFFSET		 0
315 #define SSC_PDC_PTSR_TXTEN_SIZE			 1
316 #define SSC_PDC_PTSR_TXTEN_OFFSET		 8
317 
318 /* Bit manipulation macros */
319 #define SSC_BIT(name)					\
320 	(1 << SSC_##name##_OFFSET)
321 #define SSC_BF(name, value)				\
322 	(((value) & ((1 << SSC_##name##_SIZE) - 1))	\
323 	 << SSC_##name##_OFFSET)
324 #define SSC_BFEXT(name, value)				\
325 	(((value) >> SSC_##name##_OFFSET)		\
326 	 & ((1 << SSC_##name##_SIZE) - 1))
327 #define SSC_BFINS(name, value, old)			\
328 	(((old) & ~(((1 << SSC_##name##_SIZE) - 1)	\
329 	<< SSC_##name##_OFFSET)) | SSC_BF(name, value))
330 
331 /* Register access macros */
332 #define ssc_readl(base, reg)		__raw_readl(base + SSC_##reg)
333 #define ssc_writel(base, reg, value)	__raw_writel((value), base + SSC_##reg)
334 
335 #endif /* __INCLUDE_ATMEL_SSC_H */
336