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1/*
2 * sound/soc/omap/mcbsp.h
3 *
4 * OMAP Multi-Channel Buffered Serial Port
5 *
6 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
7 * Peter Ujfalusi <peter.ujfalusi@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24#ifndef __ASOC_MCBSP_H
25#define __ASOC_MCBSP_H
26
27#ifdef CONFIG_ARCH_OMAP1
28#define mcbsp_omap1() 1
29#else
30#define mcbsp_omap1() 0
31#endif
32
33#include <sound/dmaengine_pcm.h>
34
35/* McBSP register numbers. Register address offset = num * reg_step */
36enum {
37 /* Common registers */
38 OMAP_MCBSP_REG_SPCR2 = 4,
39 OMAP_MCBSP_REG_SPCR1,
40 OMAP_MCBSP_REG_RCR2,
41 OMAP_MCBSP_REG_RCR1,
42 OMAP_MCBSP_REG_XCR2,
43 OMAP_MCBSP_REG_XCR1,
44 OMAP_MCBSP_REG_SRGR2,
45 OMAP_MCBSP_REG_SRGR1,
46 OMAP_MCBSP_REG_MCR2,
47 OMAP_MCBSP_REG_MCR1,
48 OMAP_MCBSP_REG_RCERA,
49 OMAP_MCBSP_REG_RCERB,
50 OMAP_MCBSP_REG_XCERA,
51 OMAP_MCBSP_REG_XCERB,
52 OMAP_MCBSP_REG_PCR0,
53 OMAP_MCBSP_REG_RCERC,
54 OMAP_MCBSP_REG_RCERD,
55 OMAP_MCBSP_REG_XCERC,
56 OMAP_MCBSP_REG_XCERD,
57 OMAP_MCBSP_REG_RCERE,
58 OMAP_MCBSP_REG_RCERF,
59 OMAP_MCBSP_REG_XCERE,
60 OMAP_MCBSP_REG_XCERF,
61 OMAP_MCBSP_REG_RCERG,
62 OMAP_MCBSP_REG_RCERH,
63 OMAP_MCBSP_REG_XCERG,
64 OMAP_MCBSP_REG_XCERH,
65
66 /* OMAP1-OMAP2420 registers */
67 OMAP_MCBSP_REG_DRR2 = 0,
68 OMAP_MCBSP_REG_DRR1,
69 OMAP_MCBSP_REG_DXR2,
70 OMAP_MCBSP_REG_DXR1,
71
72 /* OMAP2430 and onwards */
73 OMAP_MCBSP_REG_DRR = 0,
74 OMAP_MCBSP_REG_DXR = 2,
75 OMAP_MCBSP_REG_SYSCON = 35,
76 OMAP_MCBSP_REG_THRSH2,
77 OMAP_MCBSP_REG_THRSH1,
78 OMAP_MCBSP_REG_IRQST = 40,
79 OMAP_MCBSP_REG_IRQEN,
80 OMAP_MCBSP_REG_WAKEUPEN,
81 OMAP_MCBSP_REG_XCCR,
82 OMAP_MCBSP_REG_RCCR,
83 OMAP_MCBSP_REG_XBUFFSTAT,
84 OMAP_MCBSP_REG_RBUFFSTAT,
85 OMAP_MCBSP_REG_SSELCR,
86};
87
88/* OMAP3 sidetone control registers */
89#define OMAP_ST_REG_REV 0x00
90#define OMAP_ST_REG_SYSCONFIG 0x10
91#define OMAP_ST_REG_IRQSTATUS 0x18
92#define OMAP_ST_REG_IRQENABLE 0x1C
93#define OMAP_ST_REG_SGAINCR 0x24
94#define OMAP_ST_REG_SFIRCR 0x28
95#define OMAP_ST_REG_SSELCR 0x2C
96
97/************************** McBSP SPCR1 bit definitions ***********************/
98#define RRST BIT(0)
99#define RRDY BIT(1)
100#define RFULL BIT(2)
101#define RSYNC_ERR BIT(3)
102#define RINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */
103#define ABIS BIT(6)
104#define DXENA BIT(7)
105#define CLKSTP(value) (((value) & 0x3) << 11) /* bits 11:12 */
106#define RJUST(value) (((value) & 0x3) << 13) /* bits 13:14 */
107#define ALB BIT(15)
108#define DLB BIT(15)
109
110/************************** McBSP SPCR2 bit definitions ***********************/
111#define XRST BIT(0)
112#define XRDY BIT(1)
113#define XEMPTY BIT(2)
114#define XSYNC_ERR BIT(3)
115#define XINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */
116#define GRST BIT(6)
117#define FRST BIT(7)
118#define SOFT BIT(8)
119#define FREE BIT(9)
120
121/************************** McBSP PCR bit definitions *************************/
122#define CLKRP BIT(0)
123#define CLKXP BIT(1)
124#define FSRP BIT(2)
125#define FSXP BIT(3)
126#define DR_STAT BIT(4)
127#define DX_STAT BIT(5)
128#define CLKS_STAT BIT(6)
129#define SCLKME BIT(7)
130#define CLKRM BIT(8)
131#define CLKXM BIT(9)
132#define FSRM BIT(10)
133#define FSXM BIT(11)
134#define RIOEN BIT(12)
135#define XIOEN BIT(13)
136#define IDLE_EN BIT(14)
137
138/************************** McBSP RCR1 bit definitions ************************/
139#define RWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */
140#define RFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
141
142/************************** McBSP XCR1 bit definitions ************************/
143#define XWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */
144#define XFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
145
146/*************************** McBSP RCR2 bit definitions ***********************/
147#define RDATDLY(value) ((value) & 0x3) /* Bits 0:1 */
148#define RFIG BIT(2)
149#define RCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */
150#define RWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */
151#define RFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
152#define RPHASE BIT(15)
153
154/*************************** McBSP XCR2 bit definitions ***********************/
155#define XDATDLY(value) ((value) & 0x3) /* Bits 0:1 */
156#define XFIG BIT(2)
157#define XCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */
158#define XWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */
159#define XFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
160#define XPHASE BIT(15)
161
162/************************* McBSP SRGR1 bit definitions ************************/
163#define CLKGDV(value) ((value) & 0x7f) /* Bits 0:7 */
164#define FWID(value) (((value) & 0xff) << 8) /* Bits 8:15 */
165
166/************************* McBSP SRGR2 bit definitions ************************/
167#define FPER(value) ((value) & 0x0fff) /* Bits 0:11 */
168#define FSGM BIT(12)
169#define CLKSM BIT(13)
170#define CLKSP BIT(14)
171#define GSYNC BIT(15)
172
173/************************* McBSP MCR1 bit definitions *************************/
174#define RMCM BIT(0)
175#define RCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */
176#define RPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */
177#define RPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */
178
179/************************* McBSP MCR2 bit definitions *************************/
180#define XMCM(value) ((value) & 0x3) /* Bits 0:1 */
181#define XCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */
182#define XPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */
183#define XPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */
184
185/*********************** McBSP XCCR bit definitions *************************/
186#define XDISABLE BIT(0)
187#define XDMAEN BIT(3)
188#define DILB BIT(5)
189#define XFULL_CYCLE BIT(11)
190#define DXENDLY(value) (((value) & 0x3) << 12) /* Bits 12:13 */
191#define PPCONNECT BIT(14)
192#define EXTCLKGATE BIT(15)
193
194/********************** McBSP RCCR bit definitions *************************/
195#define RDISABLE BIT(0)
196#define RDMAEN BIT(3)
197#define RFULL_CYCLE BIT(11)
198
199/********************** McBSP SYSCONFIG bit definitions ********************/
200#define SOFTRST BIT(1)
201#define ENAWAKEUP BIT(2)
202#define SIDLEMODE(value) (((value) & 0x3) << 3)
203#define CLOCKACTIVITY(value) (((value) & 0x3) << 8)
204
205/********************** McBSP SSELCR bit definitions ***********************/
206#define SIDETONEEN BIT(10)
207
208/********************** McBSP Sidetone SYSCONFIG bit definitions ***********/
209#define ST_AUTOIDLE BIT(0)
210
211/********************** McBSP Sidetone SGAINCR bit definitions *************/
212#define ST_CH0GAIN(value) ((value) & 0xffff) /* Bits 0:15 */
213#define ST_CH1GAIN(value) (((value) & 0xffff) << 16) /* Bits 16:31 */
214
215/********************** McBSP Sidetone SFIRCR bit definitions **************/
216#define ST_FIRCOEFF(value) ((value) & 0xffff) /* Bits 0:15 */
217
218/********************** McBSP Sidetone SSELCR bit definitions **************/
219#define ST_SIDETONEEN BIT(0)
220#define ST_COEFFWREN BIT(1)
221#define ST_COEFFWRDONE BIT(2)
222
223/********************** McBSP DMA operating modes **************************/
224#define MCBSP_DMA_MODE_ELEMENT 0
225#define MCBSP_DMA_MODE_THRESHOLD 1
226
227/********************** McBSP WAKEUPEN/IRQST/IRQEN bit definitions *********/
228#define RSYNCERREN BIT(0)
229#define RFSREN BIT(1)
230#define REOFEN BIT(2)
231#define RRDYEN BIT(3)
232#define RUNDFLEN BIT(4)
233#define ROVFLEN BIT(5)
234#define XSYNCERREN BIT(7)
235#define XFSXEN BIT(8)
236#define XEOFEN BIT(9)
237#define XRDYEN BIT(10)
238#define XUNDFLEN BIT(11)
239#define XOVFLEN BIT(12)
240#define XEMPTYEOFEN BIT(14)
241
242/* Clock signal muxing options */
243#define CLKR_SRC_CLKR 0 /* CLKR signal is from the CLKR pin */
244#define CLKR_SRC_CLKX 1 /* CLKR signal is from the CLKX pin */
245#define FSR_SRC_FSR 2 /* FSR signal is from the FSR pin */
246#define FSR_SRC_FSX 3 /* FSR signal is from the FSX pin */
247
248/* McBSP functional clock sources */
249#define MCBSP_CLKS_PRCM_SRC 0
250#define MCBSP_CLKS_PAD_SRC 1
251
252/* we don't do multichannel for now */
253struct omap_mcbsp_reg_cfg {
254 u16 spcr2;
255 u16 spcr1;
256 u16 rcr2;
257 u16 rcr1;
258 u16 xcr2;
259 u16 xcr1;
260 u16 srgr2;
261 u16 srgr1;
262 u16 mcr2;
263 u16 mcr1;
264 u16 pcr0;
265 u16 rcerc;
266 u16 rcerd;
267 u16 xcerc;
268 u16 xcerd;
269 u16 rcere;
270 u16 rcerf;
271 u16 xcere;
272 u16 xcerf;
273 u16 rcerg;
274 u16 rcerh;
275 u16 xcerg;
276 u16 xcerh;
277 u16 xccr;
278 u16 rccr;
279};
280
281struct omap_mcbsp_st_data {
282 void __iomem *io_base_st;
283 struct clk *mcbsp_iclk;
284 bool running;
285 bool enabled;
286 s16 taps[128]; /* Sidetone filter coefficients */
287 int nr_taps; /* Number of filter coefficients in use */
288 s16 ch0gain;
289 s16 ch1gain;
290};
291
292struct omap_mcbsp {
293 struct device *dev;
294 struct clk *fclk;
295 spinlock_t lock;
296 unsigned long phys_base;
297 unsigned long phys_dma_base;
298 void __iomem *io_base;
299 u8 id;
300 /*
301 * Flags indicating is the bus already activated and configured by
302 * another substream
303 */
304 int active;
305 int configured;
306 u8 free;
307
308 int irq;
309 int rx_irq;
310 int tx_irq;
311
312 /* Protect the field .free, while checking if the mcbsp is in use */
313 struct omap_mcbsp_platform_data *pdata;
314 struct omap_mcbsp_st_data *st_data;
315 struct omap_mcbsp_reg_cfg cfg_regs;
316 struct snd_dmaengine_dai_dma_data dma_data[2];
317 unsigned int dma_req[2];
318 int dma_op_mode;
319 u16 max_tx_thres;
320 u16 max_rx_thres;
321 void *reg_cache;
322 int reg_cache_size;
323
324 unsigned int fmt;
325 unsigned int in_freq;
326 int clk_div;
327 int wlen;
328};
329
330void omap_mcbsp_config(struct omap_mcbsp *mcbsp,
331 const struct omap_mcbsp_reg_cfg *config);
332void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
333void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
334u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp);
335u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp);
336int omap_mcbsp_get_dma_op_mode(struct omap_mcbsp *mcbsp);
337int omap_mcbsp_request(struct omap_mcbsp *mcbsp);
338void omap_mcbsp_free(struct omap_mcbsp *mcbsp);
339void omap_mcbsp_start(struct omap_mcbsp *mcbsp, int tx, int rx);
340void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx);
341
342/* McBSP functional clock source changing function */
343int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);
344
345/* Sidetone specific API */
346int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain);
347int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain);
348int omap_st_enable(struct omap_mcbsp *mcbsp);
349int omap_st_disable(struct omap_mcbsp *mcbsp);
350int omap_st_is_enabled(struct omap_mcbsp *mcbsp);
351
352int omap_mcbsp_init(struct platform_device *pdev);
353void omap_mcbsp_cleanup(struct omap_mcbsp *mcbsp);
354
355#endif /* __ASOC_MCBSP_H */
1/*
2 * sound/soc/omap/mcbsp.h
3 *
4 * OMAP Multi-Channel Buffered Serial Port
5 *
6 * Contact: Jarkko Nikula <jarkko.nikula@bitmer.com>
7 * Peter Ujfalusi <peter.ujfalusi@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24#ifndef __ASOC_MCBSP_H
25#define __ASOC_MCBSP_H
26
27#ifdef CONFIG_ARCH_OMAP1
28#define mcbsp_omap1() 1
29#else
30#define mcbsp_omap1() 0
31#endif
32
33#include <sound/dmaengine_pcm.h>
34
35/* McBSP register numbers. Register address offset = num * reg_step */
36enum {
37 /* Common registers */
38 OMAP_MCBSP_REG_SPCR2 = 4,
39 OMAP_MCBSP_REG_SPCR1,
40 OMAP_MCBSP_REG_RCR2,
41 OMAP_MCBSP_REG_RCR1,
42 OMAP_MCBSP_REG_XCR2,
43 OMAP_MCBSP_REG_XCR1,
44 OMAP_MCBSP_REG_SRGR2,
45 OMAP_MCBSP_REG_SRGR1,
46 OMAP_MCBSP_REG_MCR2,
47 OMAP_MCBSP_REG_MCR1,
48 OMAP_MCBSP_REG_RCERA,
49 OMAP_MCBSP_REG_RCERB,
50 OMAP_MCBSP_REG_XCERA,
51 OMAP_MCBSP_REG_XCERB,
52 OMAP_MCBSP_REG_PCR0,
53 OMAP_MCBSP_REG_RCERC,
54 OMAP_MCBSP_REG_RCERD,
55 OMAP_MCBSP_REG_XCERC,
56 OMAP_MCBSP_REG_XCERD,
57 OMAP_MCBSP_REG_RCERE,
58 OMAP_MCBSP_REG_RCERF,
59 OMAP_MCBSP_REG_XCERE,
60 OMAP_MCBSP_REG_XCERF,
61 OMAP_MCBSP_REG_RCERG,
62 OMAP_MCBSP_REG_RCERH,
63 OMAP_MCBSP_REG_XCERG,
64 OMAP_MCBSP_REG_XCERH,
65
66 /* OMAP1-OMAP2420 registers */
67 OMAP_MCBSP_REG_DRR2 = 0,
68 OMAP_MCBSP_REG_DRR1,
69 OMAP_MCBSP_REG_DXR2,
70 OMAP_MCBSP_REG_DXR1,
71
72 /* OMAP2430 and onwards */
73 OMAP_MCBSP_REG_DRR = 0,
74 OMAP_MCBSP_REG_DXR = 2,
75 OMAP_MCBSP_REG_SYSCON = 35,
76 OMAP_MCBSP_REG_THRSH2,
77 OMAP_MCBSP_REG_THRSH1,
78 OMAP_MCBSP_REG_IRQST = 40,
79 OMAP_MCBSP_REG_IRQEN,
80 OMAP_MCBSP_REG_WAKEUPEN,
81 OMAP_MCBSP_REG_XCCR,
82 OMAP_MCBSP_REG_RCCR,
83 OMAP_MCBSP_REG_XBUFFSTAT,
84 OMAP_MCBSP_REG_RBUFFSTAT,
85 OMAP_MCBSP_REG_SSELCR,
86};
87
88/* OMAP3 sidetone control registers */
89#define OMAP_ST_REG_REV 0x00
90#define OMAP_ST_REG_SYSCONFIG 0x10
91#define OMAP_ST_REG_IRQSTATUS 0x18
92#define OMAP_ST_REG_IRQENABLE 0x1C
93#define OMAP_ST_REG_SGAINCR 0x24
94#define OMAP_ST_REG_SFIRCR 0x28
95#define OMAP_ST_REG_SSELCR 0x2C
96
97/************************** McBSP SPCR1 bit definitions ***********************/
98#define RRST BIT(0)
99#define RRDY BIT(1)
100#define RFULL BIT(2)
101#define RSYNC_ERR BIT(3)
102#define RINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */
103#define ABIS BIT(6)
104#define DXENA BIT(7)
105#define CLKSTP(value) (((value) & 0x3) << 11) /* bits 11:12 */
106#define RJUST(value) (((value) & 0x3) << 13) /* bits 13:14 */
107#define ALB BIT(15)
108#define DLB BIT(15)
109
110/************************** McBSP SPCR2 bit definitions ***********************/
111#define XRST BIT(0)
112#define XRDY BIT(1)
113#define XEMPTY BIT(2)
114#define XSYNC_ERR BIT(3)
115#define XINTM(value) (((value) & 0x3) << 4) /* bits 4:5 */
116#define GRST BIT(6)
117#define FRST BIT(7)
118#define SOFT BIT(8)
119#define FREE BIT(9)
120
121/************************** McBSP PCR bit definitions *************************/
122#define CLKRP BIT(0)
123#define CLKXP BIT(1)
124#define FSRP BIT(2)
125#define FSXP BIT(3)
126#define DR_STAT BIT(4)
127#define DX_STAT BIT(5)
128#define CLKS_STAT BIT(6)
129#define SCLKME BIT(7)
130#define CLKRM BIT(8)
131#define CLKXM BIT(9)
132#define FSRM BIT(10)
133#define FSXM BIT(11)
134#define RIOEN BIT(12)
135#define XIOEN BIT(13)
136#define IDLE_EN BIT(14)
137
138/************************** McBSP RCR1 bit definitions ************************/
139#define RWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */
140#define RFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
141
142/************************** McBSP XCR1 bit definitions ************************/
143#define XWDLEN1(value) (((value) & 0x7) << 5) /* Bits 5:7 */
144#define XFRLEN1(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
145
146/*************************** McBSP RCR2 bit definitions ***********************/
147#define RDATDLY(value) ((value) & 0x3) /* Bits 0:1 */
148#define RFIG BIT(2)
149#define RCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */
150#define RWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */
151#define RFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
152#define RPHASE BIT(15)
153
154/*************************** McBSP XCR2 bit definitions ***********************/
155#define XDATDLY(value) ((value) & 0x3) /* Bits 0:1 */
156#define XFIG BIT(2)
157#define XCOMPAND(value) (((value) & 0x3) << 3) /* Bits 3:4 */
158#define XWDLEN2(value) (((value) & 0x7) << 5) /* Bits 5:7 */
159#define XFRLEN2(value) (((value) & 0x7f) << 8) /* Bits 8:14 */
160#define XPHASE BIT(15)
161
162/************************* McBSP SRGR1 bit definitions ************************/
163#define CLKGDV(value) ((value) & 0x7f) /* Bits 0:7 */
164#define FWID(value) (((value) & 0xff) << 8) /* Bits 8:15 */
165
166/************************* McBSP SRGR2 bit definitions ************************/
167#define FPER(value) ((value) & 0x0fff) /* Bits 0:11 */
168#define FSGM BIT(12)
169#define CLKSM BIT(13)
170#define CLKSP BIT(14)
171#define GSYNC BIT(15)
172
173/************************* McBSP MCR1 bit definitions *************************/
174#define RMCM BIT(0)
175#define RCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */
176#define RPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */
177#define RPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */
178
179/************************* McBSP MCR2 bit definitions *************************/
180#define XMCM(value) ((value) & 0x3) /* Bits 0:1 */
181#define XCBLK(value) (((value) & 0x7) << 2) /* Bits 2:4 */
182#define XPABLK(value) (((value) & 0x3) << 5) /* Bits 5:6 */
183#define XPBBLK(value) (((value) & 0x3) << 7) /* Bits 7:8 */
184
185/*********************** McBSP XCCR bit definitions *************************/
186#define XDISABLE BIT(0)
187#define XDMAEN BIT(3)
188#define DILB BIT(5)
189#define XFULL_CYCLE BIT(11)
190#define DXENDLY(value) (((value) & 0x3) << 12) /* Bits 12:13 */
191#define PPCONNECT BIT(14)
192#define EXTCLKGATE BIT(15)
193
194/********************** McBSP RCCR bit definitions *************************/
195#define RDISABLE BIT(0)
196#define RDMAEN BIT(3)
197#define RFULL_CYCLE BIT(11)
198
199/********************** McBSP SYSCONFIG bit definitions ********************/
200#define SOFTRST BIT(1)
201#define ENAWAKEUP BIT(2)
202#define SIDLEMODE(value) (((value) & 0x3) << 3)
203#define CLOCKACTIVITY(value) (((value) & 0x3) << 8)
204
205/********************** McBSP SSELCR bit definitions ***********************/
206#define SIDETONEEN BIT(10)
207
208/********************** McBSP Sidetone SYSCONFIG bit definitions ***********/
209#define ST_AUTOIDLE BIT(0)
210
211/********************** McBSP Sidetone SGAINCR bit definitions *************/
212#define ST_CH0GAIN(value) ((value) & 0xffff) /* Bits 0:15 */
213#define ST_CH1GAIN(value) (((value) & 0xffff) << 16) /* Bits 16:31 */
214
215/********************** McBSP Sidetone SFIRCR bit definitions **************/
216#define ST_FIRCOEFF(value) ((value) & 0xffff) /* Bits 0:15 */
217
218/********************** McBSP Sidetone SSELCR bit definitions **************/
219#define ST_SIDETONEEN BIT(0)
220#define ST_COEFFWREN BIT(1)
221#define ST_COEFFWRDONE BIT(2)
222
223/********************** McBSP DMA operating modes **************************/
224#define MCBSP_DMA_MODE_ELEMENT 0
225#define MCBSP_DMA_MODE_THRESHOLD 1
226
227/********************** McBSP WAKEUPEN/IRQST/IRQEN bit definitions *********/
228#define RSYNCERREN BIT(0)
229#define RFSREN BIT(1)
230#define REOFEN BIT(2)
231#define RRDYEN BIT(3)
232#define RUNDFLEN BIT(4)
233#define ROVFLEN BIT(5)
234#define XSYNCERREN BIT(7)
235#define XFSXEN BIT(8)
236#define XEOFEN BIT(9)
237#define XRDYEN BIT(10)
238#define XUNDFLEN BIT(11)
239#define XOVFLEN BIT(12)
240#define XEMPTYEOFEN BIT(14)
241
242/* Clock signal muxing options */
243#define CLKR_SRC_CLKR 0 /* CLKR signal is from the CLKR pin */
244#define CLKR_SRC_CLKX 1 /* CLKR signal is from the CLKX pin */
245#define FSR_SRC_FSR 2 /* FSR signal is from the FSR pin */
246#define FSR_SRC_FSX 3 /* FSR signal is from the FSX pin */
247
248/* McBSP functional clock sources */
249#define MCBSP_CLKS_PRCM_SRC 0
250#define MCBSP_CLKS_PAD_SRC 1
251
252/* we don't do multichannel for now */
253struct omap_mcbsp_reg_cfg {
254 u16 spcr2;
255 u16 spcr1;
256 u16 rcr2;
257 u16 rcr1;
258 u16 xcr2;
259 u16 xcr1;
260 u16 srgr2;
261 u16 srgr1;
262 u16 mcr2;
263 u16 mcr1;
264 u16 pcr0;
265 u16 rcerc;
266 u16 rcerd;
267 u16 xcerc;
268 u16 xcerd;
269 u16 rcere;
270 u16 rcerf;
271 u16 xcere;
272 u16 xcerf;
273 u16 rcerg;
274 u16 rcerh;
275 u16 xcerg;
276 u16 xcerh;
277 u16 xccr;
278 u16 rccr;
279};
280
281struct omap_mcbsp_st_data {
282 void __iomem *io_base_st;
283 bool running;
284 bool enabled;
285 s16 taps[128]; /* Sidetone filter coefficients */
286 int nr_taps; /* Number of filter coefficients in use */
287 s16 ch0gain;
288 s16 ch1gain;
289};
290
291struct omap_mcbsp {
292 struct device *dev;
293 struct clk *fclk;
294 spinlock_t lock;
295 unsigned long phys_base;
296 unsigned long phys_dma_base;
297 void __iomem *io_base;
298 u8 id;
299 /*
300 * Flags indicating is the bus already activated and configured by
301 * another substream
302 */
303 int active;
304 int configured;
305 u8 free;
306
307 int irq;
308 int rx_irq;
309 int tx_irq;
310
311 /* Protect the field .free, while checking if the mcbsp is in use */
312 struct omap_mcbsp_platform_data *pdata;
313 struct omap_mcbsp_st_data *st_data;
314 struct omap_mcbsp_reg_cfg cfg_regs;
315 struct snd_dmaengine_dai_dma_data dma_data[2];
316 unsigned int dma_req[2];
317 int dma_op_mode;
318 u16 max_tx_thres;
319 u16 max_rx_thres;
320 void *reg_cache;
321 int reg_cache_size;
322
323 unsigned int fmt;
324 unsigned int in_freq;
325 int clk_div;
326 int wlen;
327};
328
329void omap_mcbsp_config(struct omap_mcbsp *mcbsp,
330 const struct omap_mcbsp_reg_cfg *config);
331void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
332void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold);
333u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp);
334u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp);
335int omap_mcbsp_get_dma_op_mode(struct omap_mcbsp *mcbsp);
336int omap_mcbsp_request(struct omap_mcbsp *mcbsp);
337void omap_mcbsp_free(struct omap_mcbsp *mcbsp);
338void omap_mcbsp_start(struct omap_mcbsp *mcbsp, int tx, int rx);
339void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx);
340
341/* McBSP functional clock source changing function */
342int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id);
343
344/* Sidetone specific API */
345int omap_st_set_chgain(struct omap_mcbsp *mcbsp, int channel, s16 chgain);
346int omap_st_get_chgain(struct omap_mcbsp *mcbsp, int channel, s16 *chgain);
347int omap_st_enable(struct omap_mcbsp *mcbsp);
348int omap_st_disable(struct omap_mcbsp *mcbsp);
349int omap_st_is_enabled(struct omap_mcbsp *mcbsp);
350
351int omap_mcbsp_init(struct platform_device *pdev);
352void omap_mcbsp_sysfs_remove(struct omap_mcbsp *mcbsp);
353
354#endif /* __ASOC_MCBSP_H */