aboutsummaryrefslogtreecommitdiff
path: root/sound/soc/omap/mcbsp.h
blob: a89791c239a5d0b654d121501a8353a6ac6ec4a8 (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
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
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
/*
 * sound/soc/omap/mcbsp.h
 *
 * OMAP Multi-Channel Buffered Serial Port
 *
 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
 *          Peter Ujfalusi <peter.ujfalusi@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
#ifndef __ASOC_MCBSP_H
#define __ASOC_MCBSP_H

#include "omap-pcm.h"

#ifdef CONFIG_ARCH_OMAP1
#define mcbsp_omap1()	1
#else
#define mcbsp_omap1()	0
#endif

/* McBSP register numbers. Register address offset = num * reg_step */
enum {
	/* Common registers */
	OMAP_MCBSP_REG_SPCR2 = 4,
	OMAP_MCBSP_REG_SPCR1,
	OMAP_MCBSP_REG_RCR2,
	OMAP_MCBSP_REG_RCR1,
	OMAP_MCBSP_REG_XCR2,
	OMAP_MCBSP_REG_XCR1,
	OMAP_MCBSP_REG_SRGR2,
	OMAP_MCBSP_REG_SRGR1,
	OMAP_MCBSP_REG_MCR2,
	OMAP_MCBSP_REG_MCR1,
	OMAP_MCBSP_REG_RCERA,
	OMAP_MCBSP_REG_RCERB,
	OMAP_MCBSP_REG_XCERA,
	OMAP_MCBSP_REG_XCERB,
	OMAP_MCBSP_REG_PCR0,
	OMAP_MCBSP_REG_RCERC,
	OMAP_MCBSP_REG_RCERD,
	OMAP_MCBSP_REG_XCERC,
	OMAP_MCBSP_REG_XCERD,
	OMAP_MCBSP_REG_RCERE,
	OMAP_MCBSP_REG_RCERF,
	OMAP_MCBSP_REG_XCERE,
	OMAP_MCBSP_REG_XCERF,
	OMAP_MCBSP_REG_RCERG,
	OMAP_MCBSP_REG_RCERH,
	OMAP_MCBSP_REG_XCERG,
	OMAP_MCBSP_REG_XCERH,

	/* OMAP1-OMAP2420 registers */
	OMAP_MCBSP_REG_DRR2 = 0,
	OMAP_MCBSP_REG_DRR1,
	OMAP_MCBSP_REG_DXR2,
	OMAP_MCBSP_REG_DXR1,

	/* OMAP2430 and onwards */
	OMAP_MCBSP_REG_DRR = 0,
	OMAP_MCBSP_REG_DXR = 2,
	OMAP_MCBSP_REG_SYSCON =	35,
	OMAP_MCBSP_REG_THRSH2,
	OMAP_MCBSP_REG_THRSH1,
	OMAP_MCBSP_REG_IRQST = 40,
	OMAP_MCBSP_REG_IRQEN,
	OMAP_MCBSP_REG_WAKEUPEN,
	OMAP_MCBSP_REG_XCCR,
	OMAP_MCBSP_REG_RCCR,
	OMAP_MCBSP_REG_XBUFFSTAT,
	OMAP_MCBSP_REG_RBUFFSTAT,
	OMAP_MCBSP_REG_SSELCR,
};

/* OMAP3 sidetone control registers */
#define OMAP_ST_REG_REV		0x00
#define OMAP_ST_REG_SYSCONFIG	0x10
#define OMAP_ST_REG_IRQSTATUS	0x18
#define OMAP_ST_REG_IRQENABLE	0x1C
#define OMAP_ST_REG_SGAINCR	0x24
#define OMAP_ST_REG_SFIRCR	0x28
#define OMAP_ST_REG_SSELCR	0x2C

/************************** McBSP SPCR1 bit definitions ***********************/
#define RRST			BIT(0)
#define RRDY			BIT(1)
#define RFULL			BIT(2)
#define RSYNC_ERR		BIT(3)
#define RINTM(value)		(((value) & 0x3) << 4)	/* bits 4:5 */
#define ABIS			BIT(6)
#define DXENA			BIT(7)
#define CLKSTP(value)		(((value) & 0x3) << 11)	/* bits 11:12 */
#define RJUST(value)		(((value) & 0x3) << 13)	/* bits 13:14 */
#define ALB			BIT(15)
#define DLB			BIT(15)

/************************** McBSP SPCR2 bit definitions ***********************/
#define XRST			BIT(0)
#define XRDY			BIT(1)
#define XEMPTY			BIT(2)
#define XSYNC_ERR		BIT(3)
#define XINTM(value)		(((value) & 0x3) << 4)	/* bits 4:5 */
#define GRST			BIT(6)
#define FRST			BIT(7)
#define SOFT			BIT(8)
#define FREE			BIT(9)

/************************** McBSP PCR bit definitions *************************/
#define CLKRP			BIT(0)
#define CLKXP			BIT(1)
#define FSRP			BIT(2)
#define FSXP			BIT(3)
#define DR_STAT			BIT(4)
#define DX_STAT			BIT(5)
#define CLKS_STAT		BIT(6)
#define SCLKME			BIT(7)
#define CLKRM			BIT(8)
#define CLKXM			BIT(9)
#define FSRM			BIT(10)
#define FSXM			BIT(11)
#define RIOEN			BIT(12)
#define XIOEN			BIT(13)
#define IDLE_EN			BIT(14)

/************************** McBSP RCR1 bit definitions ************************/
#define RWDLEN1(value)		(((value) & 0x7) << 5)	/* Bits 5:7 */
#define RFRLEN1(value)		(((value) & 0x7f) << 8)	/* Bits 8:14 */

/************************** McBSP XCR1 bit definitions ************************/
#define XWDLEN1(value)		(((value) & 0x7) << 5)	/* Bits 5:7 */
#define XFRLEN1(value)		(((value) & 0x7f) << 8)	/* Bits 8:14 */

/*************************** McBSP RCR2 bit definitions ***********************/
#define RDATDLY(value)		((value) & 0x3)		/* Bits 0:1 */
#define RFIG			BIT(2)
#define RCOMPAND(value)		(((value) & 0x3) << 3)	/* Bits 3:4 */
#define RWDLEN2(value)		(((value) & 0x7) << 5)	/* Bits 5:7 */
#define RFRLEN2(value)		(((value) & 0x7f) << 8)	/* Bits 8:14 */
#define RPHASE			BIT(15)

/*************************** McBSP XCR2 bit definitions ***********************/
#define XDATDLY(value)		((value) & 0x3)		/* Bits 0:1 */
#define XFIG			BIT(2)
#define XCOMPAND(value)		(((value) & 0x3) << 3)	/* Bits 3:4 */
#define XWDLEN2(value)		(((value) & 0x7) << 5)	/* Bits 5:7 */
#define XFRLEN2(value)		(((value) & 0x7f) << 8)	/* Bits 8:14 */
#define XPHASE			BIT(15)

/************************* McBSP SRGR1 bit definitions ************************/
#define CLKGDV(value)		((value) & 0x7f)		/* Bits 0:7 */
#define FWID(value)		(((value) & 0xff) << 8)	/* Bits 8:15 */

/************************* McBSP SRGR2 bit definitions ************************/
#define FPER(value)		((value) & 0x0fff)	/* Bits 0:11 */
#define FSGM			BIT(12)
#define CLKSM			BIT(13)
#define CLKSP			BIT(14)
#define GSYNC			BIT(15)

/************************* McBSP MCR1 bit definitions *************************/
#define RMCM			BIT(0)
#define RCBLK(value)		(((value) & 0x7) << 2)	/* Bits 2:4 */
#define RPABLK(value)		(((value) & 0x3) << 5)	/* Bits 5:6 */
#define RPBBLK(value)		(((value) & 0x3) << 7)	/* Bits 7:8 */

/************************* McBSP MCR2 bit definitions *************************/
#define XMCM(value)		((value) & 0x3)		/* Bits 0:1 */
#define XCBLK(value)		(((value) & 0x7) << 2)	/* Bits 2:4 */
#define XPABLK(value)		(((value) & 0x3) << 5)	/* Bits 5:6 */
#define XPBBLK(value)		(((value) & 0x3) << 7)	/* Bits 7:8 */

/*********************** McBSP XCCR bit definitions *************************/
#define XDISABLE		BIT(0)
#define XDMAEN			BIT(3)
#define DILB			BIT(5)
#define XFULL_CYCLE		BIT(11)
#define DXENDLY(value)		(((value) & 0x3) << 12)	/* Bits 12:13 */
#define PPCONNECT		BIT(14)
#define EXTCLKGATE		BIT(15)

/********************** McBSP RCCR bit definitions *************************/
#define RDISABLE		BIT(0)
#define RDMAEN			BIT(3)
#define RFULL_CYCLE		BIT(11)

/********************** McBSP SYSCONFIG bit definitions ********************/
#define SOFTRST			BIT(1)
#define ENAWAKEUP		BIT(2)
#define SIDLEMODE(value)	(((value) & 0x3) << 3)
#define CLOCKACTIVITY(value)	(((value) & 0x3) << 8)

/********************** McBSP SSELCR bit definitions ***********************/
#define SIDETONEEN		BIT(10)

/********************** McBSP Sidetone SYSCONFIG bit definitions ***********/
#define ST_AUTOIDLE		BIT(0)

/********************** McBSP Sidetone SGAINCR bit definitions *************/
#define ST_CH0GAIN(value)	((value) & 0xffff)	/* Bits 0:15 */
#define ST_CH1GAIN(value)	(((value) & 0xffff) << 16) /* Bits 16:31 */

/********************** McBSP Sidetone SFIRCR bit definitions **************/
#define ST_FIRCOEFF(value)	((value) & 0xffff)	/* Bits 0:15 */

/********************** McBSP Sidetone SSELCR bit definitions **************/
#define ST_SIDETONEEN		BIT(0)
#define ST_COEFFWREN		BIT(1)
#define ST_COEFFWRDONE		BIT(2)

/********************** McBSP DMA operating modes **************************/
#define MCBSP_DMA_MODE_ELEMENT		0
#define MCBSP_DMA_MODE_THRESHOLD	1

/********************** McBSP WAKEUPEN/IRQST/IRQEN bit definitions *********/
#define RSYNCERREN		BIT(0)
#define RFSREN			BIT(1)
#define REOFEN			BIT(2)
#define RRDYEN			BIT(3)
#define RUNDFLEN		BIT(4)
#define ROVFLEN			BIT(5)
#define XSYNCERREN		BIT(7)
#define XFSXEN			BIT(8)
#define XEOFEN			BIT(9)
#define XRDYEN			BIT(10)
#define XUNDFLEN		BIT(11)
#define XOVFLEN			BIT(12)
#define XEMPTYEOFEN		BIT(14)

/* Clock signal muxing options */
#define CLKR_SRC_CLKR		0 /* CLKR signal is from the CLKR pin */
#define CLKR_SRC_CLKX		1 /* CLKR signal is from the CLKX pin */
#define FSR_SRC_FSR		2 /* FSR signal is from the FSR pin */
#define FSR_SRC_FSX		3 /* FSR signal is from the FSX pin */

/* McBSP functional clock sources */
#define MCBSP_CLKS_PRCM_SRC	0
#define MCBSP_CLKS_PAD_SRC	1

/* we don't do multichannel for now */
struct omap_mcbsp_reg_cfg {
	u16 spcr2;
	u16 spcr1;
	u16 rcr2;
	u16 rcr1;
	u16 xcr2;
	u16 xcr1;
	u16 srgr2;
	u16 srgr1;
	u16 mcr2;
	u16 mcr1;
	u16 pcr0;
	u16 rcerc;
	u16 rcerd;
	u16 xcerc;
	u16 xcerd;
	u16 rcere;
	u16 rcerf;
	u16 xcere;
	u16 xcerf;
	u16 rcerg;
	u16 rcerh;
	u16 xcerg;
	u16 xcerh;
	u16 xccr;
	u16 rccr;
};

struct omap_mcbsp_st_data {
	void __iomem *io_base_st;
	bool running;
	bool enabled;
	s16 taps[128];	/* Sidetone filter coefficients */
	int nr_taps;	/* Number of filter coefficients in use */
	s16 ch0gain;
	s16 ch1gain;
};

struct omap_mcbsp {
	struct device *dev;
	struct clk *fclk;
	spinlock_t lock;
	unsigned long phys_base;
	unsigned long phys_dma_base;
	void __iomem *io_base;
	u8 id;
	/*
	 * Flags indicating is the bus already activated and configured by
	 * another substream
	 */
	int active;
	int configured;
	u8 free;

	int irq;
	int rx_irq;
	int tx_irq;

	/* Protect the field .free, while checking if the mcbsp is in use */
	struct omap_mcbsp_platform_data *pdata;
	struct omap_mcbsp_st_data *st_data;
	struct omap_mcbsp_reg_cfg cfg_regs;
	struct omap_pcm_dma_data dma_data[2];
	int dma_op_mode;
	u16 max_tx_thres;
	u16 max_rx_thres;
	void *reg_cache;
	int reg_cache_size;

	unsigned int fmt;
	unsigned int in_freq;
	int clk_div;
	int wlen;
};

void omap_mcbsp_config(struct omap_mcbsp *mcbsp,
		       const struct omap_mcbsp_reg_cfg *config);
void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp);
u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp);
int omap_mcbsp_get_dma_op_mode(struct omap_mcbsp *mcbsp);
int omap_mcbsp_request(struct omap_mcbsp *mcbsp);
void omap_mcbsp_free(struct omap_mcbsp *mcbsp);
void omap_mcbsp_start(struct omap_mcbsp *mcbsp, int tx, int rx);
void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx);

/* McBSP functional clock source changing function */
int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);

/* Sidetone specific API */
int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain);
int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain);
int omap_st_enable(struct omap_mcbsp *mcbsp);
int omap_st_disable(struct omap_mcbsp *mcbsp);
int omap_st_is_enabled(struct omap_mcbsp *mcbsp);

int __devinit omap_mcbsp_init(struct platform_device *pdev);
void __devexit omap_mcbsp_sysfs_remove(struct omap_mcbsp *mcbsp);

#endif /* __ASOC_MCBSP_H */