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b67f4487 C |
1 | /* |
2 | * ALSA SoC McASP Audio Layer for TI DAVINCI processor | |
3 | * | |
4 | * Multi-channel Audio Serial Port Driver | |
5 | * | |
6 | * Author: Nirmal Pandey <n-pandey@ti.com>, | |
7 | * Suresh Rajashekara <suresh.r@ti.com> | |
8 | * Steve Chen <schen@.mvista.com> | |
9 | * | |
10 | * Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com> | |
11 | * Copyright: (C) 2009 Texas Instruments, India | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 as | |
15 | * published by the Free Software Foundation. | |
16 | */ | |
17 | ||
18 | #include <linux/init.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/device.h> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
b67f4487 C |
22 | #include <linux/delay.h> |
23 | #include <linux/io.h> | |
10884347 | 24 | #include <linux/pm_runtime.h> |
3e3b8c34 HG |
25 | #include <linux/of.h> |
26 | #include <linux/of_platform.h> | |
27 | #include <linux/of_device.h> | |
b67f4487 C |
28 | |
29 | #include <sound/core.h> | |
30 | #include <sound/pcm.h> | |
31 | #include <sound/pcm_params.h> | |
32 | #include <sound/initval.h> | |
33 | #include <sound/soc.h> | |
34 | ||
35 | #include "davinci-pcm.h" | |
36 | #include "davinci-mcasp.h" | |
37 | ||
38 | /* | |
39 | * McASP register definitions | |
40 | */ | |
41 | #define DAVINCI_MCASP_PID_REG 0x00 | |
42 | #define DAVINCI_MCASP_PWREMUMGT_REG 0x04 | |
43 | ||
44 | #define DAVINCI_MCASP_PFUNC_REG 0x10 | |
45 | #define DAVINCI_MCASP_PDIR_REG 0x14 | |
46 | #define DAVINCI_MCASP_PDOUT_REG 0x18 | |
47 | #define DAVINCI_MCASP_PDSET_REG 0x1c | |
48 | ||
49 | #define DAVINCI_MCASP_PDCLR_REG 0x20 | |
50 | ||
51 | #define DAVINCI_MCASP_TLGC_REG 0x30 | |
52 | #define DAVINCI_MCASP_TLMR_REG 0x34 | |
53 | ||
54 | #define DAVINCI_MCASP_GBLCTL_REG 0x44 | |
55 | #define DAVINCI_MCASP_AMUTE_REG 0x48 | |
56 | #define DAVINCI_MCASP_LBCTL_REG 0x4c | |
57 | ||
58 | #define DAVINCI_MCASP_TXDITCTL_REG 0x50 | |
59 | ||
60 | #define DAVINCI_MCASP_GBLCTLR_REG 0x60 | |
61 | #define DAVINCI_MCASP_RXMASK_REG 0x64 | |
62 | #define DAVINCI_MCASP_RXFMT_REG 0x68 | |
63 | #define DAVINCI_MCASP_RXFMCTL_REG 0x6c | |
64 | ||
65 | #define DAVINCI_MCASP_ACLKRCTL_REG 0x70 | |
66 | #define DAVINCI_MCASP_AHCLKRCTL_REG 0x74 | |
67 | #define DAVINCI_MCASP_RXTDM_REG 0x78 | |
68 | #define DAVINCI_MCASP_EVTCTLR_REG 0x7c | |
69 | ||
70 | #define DAVINCI_MCASP_RXSTAT_REG 0x80 | |
71 | #define DAVINCI_MCASP_RXTDMSLOT_REG 0x84 | |
72 | #define DAVINCI_MCASP_RXCLKCHK_REG 0x88 | |
73 | #define DAVINCI_MCASP_REVTCTL_REG 0x8c | |
74 | ||
75 | #define DAVINCI_MCASP_GBLCTLX_REG 0xa0 | |
76 | #define DAVINCI_MCASP_TXMASK_REG 0xa4 | |
77 | #define DAVINCI_MCASP_TXFMT_REG 0xa8 | |
78 | #define DAVINCI_MCASP_TXFMCTL_REG 0xac | |
79 | ||
80 | #define DAVINCI_MCASP_ACLKXCTL_REG 0xb0 | |
81 | #define DAVINCI_MCASP_AHCLKXCTL_REG 0xb4 | |
82 | #define DAVINCI_MCASP_TXTDM_REG 0xb8 | |
83 | #define DAVINCI_MCASP_EVTCTLX_REG 0xbc | |
84 | ||
85 | #define DAVINCI_MCASP_TXSTAT_REG 0xc0 | |
86 | #define DAVINCI_MCASP_TXTDMSLOT_REG 0xc4 | |
87 | #define DAVINCI_MCASP_TXCLKCHK_REG 0xc8 | |
88 | #define DAVINCI_MCASP_XEVTCTL_REG 0xcc | |
89 | ||
90 | /* Left(even TDM Slot) Channel Status Register File */ | |
91 | #define DAVINCI_MCASP_DITCSRA_REG 0x100 | |
92 | /* Right(odd TDM slot) Channel Status Register File */ | |
93 | #define DAVINCI_MCASP_DITCSRB_REG 0x118 | |
94 | /* Left(even TDM slot) User Data Register File */ | |
95 | #define DAVINCI_MCASP_DITUDRA_REG 0x130 | |
96 | /* Right(odd TDM Slot) User Data Register File */ | |
97 | #define DAVINCI_MCASP_DITUDRB_REG 0x148 | |
98 | ||
99 | /* Serializer n Control Register */ | |
100 | #define DAVINCI_MCASP_XRSRCTL_BASE_REG 0x180 | |
101 | #define DAVINCI_MCASP_XRSRCTL_REG(n) (DAVINCI_MCASP_XRSRCTL_BASE_REG + \ | |
102 | (n << 2)) | |
103 | ||
104 | /* Transmit Buffer for Serializer n */ | |
105 | #define DAVINCI_MCASP_TXBUF_REG 0x200 | |
106 | /* Receive Buffer for Serializer n */ | |
107 | #define DAVINCI_MCASP_RXBUF_REG 0x280 | |
108 | ||
6a99fb5f C |
109 | /* McASP FIFO Registers */ |
110 | #define DAVINCI_MCASP_WFIFOCTL (0x1010) | |
111 | #define DAVINCI_MCASP_WFIFOSTS (0x1014) | |
112 | #define DAVINCI_MCASP_RFIFOCTL (0x1018) | |
113 | #define DAVINCI_MCASP_RFIFOSTS (0x101C) | |
e5ec69da HG |
114 | #define MCASP_VER3_WFIFOCTL (0x1000) |
115 | #define MCASP_VER3_WFIFOSTS (0x1004) | |
116 | #define MCASP_VER3_RFIFOCTL (0x1008) | |
117 | #define MCASP_VER3_RFIFOSTS (0x100C) | |
b67f4487 C |
118 | |
119 | /* | |
120 | * DAVINCI_MCASP_PWREMUMGT_REG - Power Down and Emulation Management | |
121 | * Register Bits | |
122 | */ | |
123 | #define MCASP_FREE BIT(0) | |
124 | #define MCASP_SOFT BIT(1) | |
125 | ||
126 | /* | |
127 | * DAVINCI_MCASP_PFUNC_REG - Pin Function / GPIO Enable Register Bits | |
128 | */ | |
129 | #define AXR(n) (1<<n) | |
130 | #define PFUNC_AMUTE BIT(25) | |
131 | #define ACLKX BIT(26) | |
132 | #define AHCLKX BIT(27) | |
133 | #define AFSX BIT(28) | |
134 | #define ACLKR BIT(29) | |
135 | #define AHCLKR BIT(30) | |
136 | #define AFSR BIT(31) | |
137 | ||
138 | /* | |
139 | * DAVINCI_MCASP_PDIR_REG - Pin Direction Register Bits | |
140 | */ | |
141 | #define AXR(n) (1<<n) | |
142 | #define PDIR_AMUTE BIT(25) | |
143 | #define ACLKX BIT(26) | |
144 | #define AHCLKX BIT(27) | |
145 | #define AFSX BIT(28) | |
146 | #define ACLKR BIT(29) | |
147 | #define AHCLKR BIT(30) | |
148 | #define AFSR BIT(31) | |
149 | ||
150 | /* | |
151 | * DAVINCI_MCASP_TXDITCTL_REG - Transmit DIT Control Register Bits | |
152 | */ | |
153 | #define DITEN BIT(0) /* Transmit DIT mode enable/disable */ | |
154 | #define VA BIT(2) | |
155 | #define VB BIT(3) | |
156 | ||
157 | /* | |
158 | * DAVINCI_MCASP_TXFMT_REG - Transmit Bitstream Format Register Bits | |
159 | */ | |
160 | #define TXROT(val) (val) | |
161 | #define TXSEL BIT(3) | |
162 | #define TXSSZ(val) (val<<4) | |
163 | #define TXPBIT(val) (val<<8) | |
164 | #define TXPAD(val) (val<<13) | |
165 | #define TXORD BIT(15) | |
166 | #define FSXDLY(val) (val<<16) | |
167 | ||
168 | /* | |
169 | * DAVINCI_MCASP_RXFMT_REG - Receive Bitstream Format Register Bits | |
170 | */ | |
171 | #define RXROT(val) (val) | |
172 | #define RXSEL BIT(3) | |
173 | #define RXSSZ(val) (val<<4) | |
174 | #define RXPBIT(val) (val<<8) | |
175 | #define RXPAD(val) (val<<13) | |
176 | #define RXORD BIT(15) | |
177 | #define FSRDLY(val) (val<<16) | |
178 | ||
179 | /* | |
180 | * DAVINCI_MCASP_TXFMCTL_REG - Transmit Frame Control Register Bits | |
181 | */ | |
182 | #define FSXPOL BIT(0) | |
183 | #define AFSXE BIT(1) | |
184 | #define FSXDUR BIT(4) | |
185 | #define FSXMOD(val) (val<<7) | |
186 | ||
187 | /* | |
188 | * DAVINCI_MCASP_RXFMCTL_REG - Receive Frame Control Register Bits | |
189 | */ | |
190 | #define FSRPOL BIT(0) | |
191 | #define AFSRE BIT(1) | |
192 | #define FSRDUR BIT(4) | |
193 | #define FSRMOD(val) (val<<7) | |
194 | ||
195 | /* | |
196 | * DAVINCI_MCASP_ACLKXCTL_REG - Transmit Clock Control Register Bits | |
197 | */ | |
198 | #define ACLKXDIV(val) (val) | |
199 | #define ACLKXE BIT(5) | |
200 | #define TX_ASYNC BIT(6) | |
201 | #define ACLKXPOL BIT(7) | |
4ed8c9b7 | 202 | #define ACLKXDIV_MASK 0x1f |
b67f4487 C |
203 | |
204 | /* | |
205 | * DAVINCI_MCASP_ACLKRCTL_REG Receive Clock Control Register Bits | |
206 | */ | |
207 | #define ACLKRDIV(val) (val) | |
208 | #define ACLKRE BIT(5) | |
209 | #define RX_ASYNC BIT(6) | |
210 | #define ACLKRPOL BIT(7) | |
4ed8c9b7 | 211 | #define ACLKRDIV_MASK 0x1f |
b67f4487 C |
212 | |
213 | /* | |
214 | * DAVINCI_MCASP_AHCLKXCTL_REG - High Frequency Transmit Clock Control | |
215 | * Register Bits | |
216 | */ | |
217 | #define AHCLKXDIV(val) (val) | |
218 | #define AHCLKXPOL BIT(14) | |
219 | #define AHCLKXE BIT(15) | |
4ed8c9b7 | 220 | #define AHCLKXDIV_MASK 0xfff |
b67f4487 C |
221 | |
222 | /* | |
223 | * DAVINCI_MCASP_AHCLKRCTL_REG - High Frequency Receive Clock Control | |
224 | * Register Bits | |
225 | */ | |
226 | #define AHCLKRDIV(val) (val) | |
227 | #define AHCLKRPOL BIT(14) | |
228 | #define AHCLKRE BIT(15) | |
4ed8c9b7 | 229 | #define AHCLKRDIV_MASK 0xfff |
b67f4487 C |
230 | |
231 | /* | |
232 | * DAVINCI_MCASP_XRSRCTL_BASE_REG - Serializer Control Register Bits | |
233 | */ | |
234 | #define MODE(val) (val) | |
235 | #define DISMOD (val)(val<<2) | |
236 | #define TXSTATE BIT(4) | |
237 | #define RXSTATE BIT(5) | |
2952b27e MB |
238 | #define SRMOD_MASK 3 |
239 | #define SRMOD_INACTIVE 0 | |
b67f4487 C |
240 | |
241 | /* | |
242 | * DAVINCI_MCASP_LBCTL_REG - Loop Back Control Register Bits | |
243 | */ | |
244 | #define LBEN BIT(0) | |
245 | #define LBORD BIT(1) | |
246 | #define LBGENMODE(val) (val<<2) | |
247 | ||
248 | /* | |
249 | * DAVINCI_MCASP_TXTDMSLOT_REG - Transmit TDM Slot Register configuration | |
250 | */ | |
251 | #define TXTDMS(n) (1<<n) | |
252 | ||
253 | /* | |
254 | * DAVINCI_MCASP_RXTDMSLOT_REG - Receive TDM Slot Register configuration | |
255 | */ | |
256 | #define RXTDMS(n) (1<<n) | |
257 | ||
258 | /* | |
259 | * DAVINCI_MCASP_GBLCTL_REG - Global Control Register Bits | |
260 | */ | |
261 | #define RXCLKRST BIT(0) /* Receiver Clock Divider Reset */ | |
262 | #define RXHCLKRST BIT(1) /* Receiver High Frequency Clock Divider */ | |
263 | #define RXSERCLR BIT(2) /* Receiver Serializer Clear */ | |
264 | #define RXSMRST BIT(3) /* Receiver State Machine Reset */ | |
265 | #define RXFSRST BIT(4) /* Frame Sync Generator Reset */ | |
266 | #define TXCLKRST BIT(8) /* Transmitter Clock Divider Reset */ | |
267 | #define TXHCLKRST BIT(9) /* Transmitter High Frequency Clock Divider*/ | |
268 | #define TXSERCLR BIT(10) /* Transmit Serializer Clear */ | |
269 | #define TXSMRST BIT(11) /* Transmitter State Machine Reset */ | |
270 | #define TXFSRST BIT(12) /* Frame Sync Generator Reset */ | |
271 | ||
272 | /* | |
273 | * DAVINCI_MCASP_AMUTE_REG - Mute Control Register Bits | |
274 | */ | |
275 | #define MUTENA(val) (val) | |
276 | #define MUTEINPOL BIT(2) | |
277 | #define MUTEINENA BIT(3) | |
278 | #define MUTEIN BIT(4) | |
279 | #define MUTER BIT(5) | |
280 | #define MUTEX BIT(6) | |
281 | #define MUTEFSR BIT(7) | |
282 | #define MUTEFSX BIT(8) | |
283 | #define MUTEBADCLKR BIT(9) | |
284 | #define MUTEBADCLKX BIT(10) | |
285 | #define MUTERXDMAERR BIT(11) | |
286 | #define MUTETXDMAERR BIT(12) | |
287 | ||
288 | /* | |
289 | * DAVINCI_MCASP_REVTCTL_REG - Receiver DMA Event Control Register bits | |
290 | */ | |
291 | #define RXDATADMADIS BIT(0) | |
292 | ||
293 | /* | |
294 | * DAVINCI_MCASP_XEVTCTL_REG - Transmitter DMA Event Control Register bits | |
295 | */ | |
296 | #define TXDATADMADIS BIT(0) | |
297 | ||
6a99fb5f C |
298 | /* |
299 | * DAVINCI_MCASP_W[R]FIFOCTL - Write/Read FIFO Control Register bits | |
300 | */ | |
301 | #define FIFO_ENABLE BIT(16) | |
302 | #define NUMEVT_MASK (0xFF << 8) | |
303 | #define NUMDMA_MASK (0xFF) | |
304 | ||
b67f4487 C |
305 | #define DAVINCI_MCASP_NUM_SERIALIZER 16 |
306 | ||
307 | static inline void mcasp_set_bits(void __iomem *reg, u32 val) | |
308 | { | |
309 | __raw_writel(__raw_readl(reg) | val, reg); | |
310 | } | |
311 | ||
312 | static inline void mcasp_clr_bits(void __iomem *reg, u32 val) | |
313 | { | |
314 | __raw_writel((__raw_readl(reg) & ~(val)), reg); | |
315 | } | |
316 | ||
317 | static inline void mcasp_mod_bits(void __iomem *reg, u32 val, u32 mask) | |
318 | { | |
319 | __raw_writel((__raw_readl(reg) & ~mask) | val, reg); | |
320 | } | |
321 | ||
322 | static inline void mcasp_set_reg(void __iomem *reg, u32 val) | |
323 | { | |
324 | __raw_writel(val, reg); | |
325 | } | |
326 | ||
327 | static inline u32 mcasp_get_reg(void __iomem *reg) | |
328 | { | |
329 | return (unsigned int)__raw_readl(reg); | |
330 | } | |
331 | ||
332 | static inline void mcasp_set_ctl_reg(void __iomem *regs, u32 val) | |
333 | { | |
334 | int i = 0; | |
335 | ||
336 | mcasp_set_bits(regs, val); | |
337 | ||
338 | /* programming GBLCTL needs to read back from GBLCTL and verfiy */ | |
339 | /* loop count is to avoid the lock-up */ | |
340 | for (i = 0; i < 1000; i++) { | |
341 | if ((mcasp_get_reg(regs) & val) == val) | |
342 | break; | |
343 | } | |
344 | ||
345 | if (i == 1000 && ((mcasp_get_reg(regs) & val) != val)) | |
346 | printk(KERN_ERR "GBLCTL write error\n"); | |
347 | } | |
348 | ||
b67f4487 C |
349 | static void mcasp_start_rx(struct davinci_audio_dev *dev) |
350 | { | |
351 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXHCLKRST); | |
352 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXCLKRST); | |
353 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXSERCLR); | |
354 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXBUF_REG, 0); | |
355 | ||
356 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXSMRST); | |
357 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXFSRST); | |
358 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXBUF_REG, 0); | |
359 | ||
360 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXSMRST); | |
361 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, RXFSRST); | |
362 | } | |
363 | ||
364 | static void mcasp_start_tx(struct davinci_audio_dev *dev) | |
365 | { | |
6a99fb5f C |
366 | u8 offset = 0, i; |
367 | u32 cnt; | |
368 | ||
b67f4487 C |
369 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST); |
370 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST); | |
371 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXSERCLR); | |
372 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0); | |
373 | ||
374 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXSMRST); | |
375 | mcasp_set_ctl_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, TXFSRST); | |
376 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0); | |
6a99fb5f C |
377 | for (i = 0; i < dev->num_serializer; i++) { |
378 | if (dev->serial_dir[i] == TX_MODE) { | |
379 | offset = i; | |
380 | break; | |
381 | } | |
382 | } | |
383 | ||
384 | /* wait for TX ready */ | |
385 | cnt = 0; | |
386 | while (!(mcasp_get_reg(dev->base + DAVINCI_MCASP_XRSRCTL_REG(offset)) & | |
387 | TXSTATE) && (cnt < 100000)) | |
388 | cnt++; | |
389 | ||
b67f4487 C |
390 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXBUF_REG, 0); |
391 | } | |
392 | ||
393 | static void davinci_mcasp_start(struct davinci_audio_dev *dev, int stream) | |
394 | { | |
539d3d8c | 395 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
0d624275 | 396 | if (dev->txnumevt) { /* enable FIFO */ |
e5ec69da HG |
397 | switch (dev->version) { |
398 | case MCASP_VERSION_3: | |
399 | mcasp_clr_bits(dev->base + MCASP_VER3_WFIFOCTL, | |
0d624275 | 400 | FIFO_ENABLE); |
e5ec69da | 401 | mcasp_set_bits(dev->base + MCASP_VER3_WFIFOCTL, |
539d3d8c | 402 | FIFO_ENABLE); |
e5ec69da HG |
403 | break; |
404 | default: | |
405 | mcasp_clr_bits(dev->base + | |
406 | DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE); | |
407 | mcasp_set_bits(dev->base + | |
408 | DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE); | |
409 | } | |
0d624275 | 410 | } |
b67f4487 | 411 | mcasp_start_tx(dev); |
539d3d8c | 412 | } else { |
0d624275 | 413 | if (dev->rxnumevt) { /* enable FIFO */ |
e5ec69da HG |
414 | switch (dev->version) { |
415 | case MCASP_VERSION_3: | |
416 | mcasp_clr_bits(dev->base + MCASP_VER3_RFIFOCTL, | |
0d624275 | 417 | FIFO_ENABLE); |
e5ec69da | 418 | mcasp_set_bits(dev->base + MCASP_VER3_RFIFOCTL, |
539d3d8c | 419 | FIFO_ENABLE); |
e5ec69da HG |
420 | break; |
421 | default: | |
422 | mcasp_clr_bits(dev->base + | |
423 | DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE); | |
424 | mcasp_set_bits(dev->base + | |
425 | DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE); | |
426 | } | |
0d624275 | 427 | } |
b67f4487 | 428 | mcasp_start_rx(dev); |
539d3d8c | 429 | } |
b67f4487 C |
430 | } |
431 | ||
432 | static void mcasp_stop_rx(struct davinci_audio_dev *dev) | |
433 | { | |
434 | mcasp_set_reg(dev->base + DAVINCI_MCASP_GBLCTLR_REG, 0); | |
435 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF); | |
436 | } | |
437 | ||
438 | static void mcasp_stop_tx(struct davinci_audio_dev *dev) | |
439 | { | |
440 | mcasp_set_reg(dev->base + DAVINCI_MCASP_GBLCTLX_REG, 0); | |
441 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF); | |
442 | } | |
443 | ||
444 | static void davinci_mcasp_stop(struct davinci_audio_dev *dev, int stream) | |
445 | { | |
539d3d8c | 446 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
e5ec69da HG |
447 | if (dev->txnumevt) { /* disable FIFO */ |
448 | switch (dev->version) { | |
449 | case MCASP_VERSION_3: | |
450 | mcasp_clr_bits(dev->base + MCASP_VER3_WFIFOCTL, | |
539d3d8c | 451 | FIFO_ENABLE); |
e5ec69da HG |
452 | break; |
453 | default: | |
454 | mcasp_clr_bits(dev->base + | |
455 | DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE); | |
456 | } | |
457 | } | |
b67f4487 | 458 | mcasp_stop_tx(dev); |
539d3d8c | 459 | } else { |
e5ec69da HG |
460 | if (dev->rxnumevt) { /* disable FIFO */ |
461 | switch (dev->version) { | |
462 | case MCASP_VERSION_3: | |
463 | mcasp_clr_bits(dev->base + MCASP_VER3_RFIFOCTL, | |
539d3d8c | 464 | FIFO_ENABLE); |
e5ec69da HG |
465 | break; |
466 | ||
467 | default: | |
468 | mcasp_clr_bits(dev->base + | |
469 | DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE); | |
470 | } | |
471 | } | |
b67f4487 | 472 | mcasp_stop_rx(dev); |
539d3d8c | 473 | } |
b67f4487 C |
474 | } |
475 | ||
476 | static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai, | |
477 | unsigned int fmt) | |
478 | { | |
f0fba2ad | 479 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); |
b67f4487 C |
480 | void __iomem *base = dev->base; |
481 | ||
5296cf2d DM |
482 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
483 | case SND_SOC_DAIFMT_DSP_B: | |
484 | case SND_SOC_DAIFMT_AC97: | |
485 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); | |
486 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
487 | break; | |
488 | default: | |
489 | /* configure a full-word SYNC pulse (LRCLK) */ | |
490 | mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, FSXDUR); | |
491 | mcasp_set_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, FSRDUR); | |
492 | ||
493 | /* make 1st data bit occur one ACLK cycle after the frame sync */ | |
494 | mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, FSXDLY(1)); | |
495 | mcasp_set_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, FSRDLY(1)); | |
496 | break; | |
497 | } | |
498 | ||
b67f4487 C |
499 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
500 | case SND_SOC_DAIFMT_CBS_CFS: | |
501 | /* codec is clock and frame slave */ | |
502 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); | |
503 | mcasp_set_bits(base + DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
504 | ||
505 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); | |
506 | mcasp_set_bits(base + DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
507 | ||
81ee6833 MB |
508 | mcasp_set_bits(base + DAVINCI_MCASP_PDIR_REG, |
509 | ACLKX | ACLKR); | |
510 | mcasp_set_bits(base + DAVINCI_MCASP_PDIR_REG, | |
511 | AFSX | AFSR); | |
b67f4487 | 512 | break; |
517ee6cf C |
513 | case SND_SOC_DAIFMT_CBM_CFS: |
514 | /* codec is clock master and frame slave */ | |
a90f549e | 515 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); |
517ee6cf C |
516 | mcasp_set_bits(base + DAVINCI_MCASP_TXFMCTL_REG, AFSXE); |
517 | ||
a90f549e | 518 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); |
517ee6cf C |
519 | mcasp_set_bits(base + DAVINCI_MCASP_RXFMCTL_REG, AFSRE); |
520 | ||
db92f437 BG |
521 | mcasp_clr_bits(base + DAVINCI_MCASP_PDIR_REG, |
522 | ACLKX | ACLKR); | |
9595c8f0 | 523 | mcasp_set_bits(base + DAVINCI_MCASP_PDIR_REG, |
db92f437 | 524 | AFSX | AFSR); |
517ee6cf | 525 | break; |
b67f4487 C |
526 | case SND_SOC_DAIFMT_CBM_CFM: |
527 | /* codec is clock and frame master */ | |
528 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE); | |
529 | mcasp_clr_bits(base + DAVINCI_MCASP_TXFMCTL_REG, AFSXE); | |
530 | ||
531 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE); | |
532 | mcasp_clr_bits(base + DAVINCI_MCASP_RXFMCTL_REG, AFSRE); | |
533 | ||
9595c8f0 BG |
534 | mcasp_clr_bits(base + DAVINCI_MCASP_PDIR_REG, |
535 | ACLKX | AHCLKX | AFSX | ACLKR | AHCLKR | AFSR); | |
b67f4487 C |
536 | break; |
537 | ||
538 | default: | |
539 | return -EINVAL; | |
540 | } | |
541 | ||
542 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
543 | case SND_SOC_DAIFMT_IB_NF: | |
544 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); | |
545 | mcasp_clr_bits(base + DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
546 | ||
547 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); | |
548 | mcasp_clr_bits(base + DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); | |
549 | break; | |
550 | ||
551 | case SND_SOC_DAIFMT_NB_IF: | |
552 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); | |
553 | mcasp_set_bits(base + DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
554 | ||
555 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); | |
556 | mcasp_set_bits(base + DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); | |
557 | break; | |
558 | ||
559 | case SND_SOC_DAIFMT_IB_IF: | |
560 | mcasp_clr_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); | |
561 | mcasp_set_bits(base + DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
562 | ||
563 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); | |
564 | mcasp_set_bits(base + DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); | |
565 | break; | |
566 | ||
567 | case SND_SOC_DAIFMT_NB_NF: | |
568 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL); | |
569 | mcasp_clr_bits(base + DAVINCI_MCASP_TXFMCTL_REG, FSXPOL); | |
570 | ||
df4a4eec | 571 | mcasp_set_bits(base + DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL); |
b67f4487 C |
572 | mcasp_clr_bits(base + DAVINCI_MCASP_RXFMCTL_REG, FSRPOL); |
573 | break; | |
574 | ||
575 | default: | |
576 | return -EINVAL; | |
577 | } | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
4ed8c9b7 DM |
582 | static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div) |
583 | { | |
584 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(dai); | |
585 | ||
586 | switch (div_id) { | |
587 | case 0: /* MCLK divider */ | |
588 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_AHCLKXCTL_REG, | |
589 | AHCLKXDIV(div - 1), AHCLKXDIV_MASK); | |
590 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_AHCLKRCTL_REG, | |
591 | AHCLKRDIV(div - 1), AHCLKRDIV_MASK); | |
592 | break; | |
593 | ||
594 | case 1: /* BCLK divider */ | |
595 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_ACLKXCTL_REG, | |
596 | ACLKXDIV(div - 1), ACLKXDIV_MASK); | |
597 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_ACLKRCTL_REG, | |
598 | ACLKRDIV(div - 1), ACLKRDIV_MASK); | |
599 | break; | |
600 | ||
1b3bc060 DM |
601 | case 2: /* BCLK/LRCLK ratio */ |
602 | dev->bclk_lrclk_ratio = div; | |
603 | break; | |
604 | ||
4ed8c9b7 DM |
605 | default: |
606 | return -EINVAL; | |
607 | } | |
608 | ||
609 | return 0; | |
610 | } | |
611 | ||
5b66aa2d DM |
612 | static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
613 | unsigned int freq, int dir) | |
614 | { | |
615 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(dai); | |
616 | ||
617 | if (dir == SND_SOC_CLOCK_OUT) { | |
618 | mcasp_set_bits(dev->base + DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE); | |
619 | mcasp_set_bits(dev->base + DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE); | |
620 | mcasp_set_bits(dev->base + DAVINCI_MCASP_PDIR_REG, AHCLKX); | |
621 | } else { | |
622 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE); | |
623 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE); | |
624 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_PDIR_REG, AHCLKX); | |
625 | } | |
626 | ||
627 | return 0; | |
628 | } | |
629 | ||
b67f4487 | 630 | static int davinci_config_channel_size(struct davinci_audio_dev *dev, |
ba764b3d | 631 | int word_length) |
b67f4487 | 632 | { |
ba764b3d | 633 | u32 fmt; |
79671892 DM |
634 | u32 tx_rotate = (word_length / 4) & 0x7; |
635 | u32 rx_rotate = (32 - word_length) / 4; | |
ba764b3d | 636 | u32 mask = (1ULL << word_length) - 1; |
b67f4487 | 637 | |
1b3bc060 DM |
638 | /* |
639 | * if s BCLK-to-LRCLK ratio has been configured via the set_clkdiv() | |
640 | * callback, take it into account here. That allows us to for example | |
641 | * send 32 bits per channel to the codec, while only 16 of them carry | |
642 | * audio payload. | |
d486fea6 MB |
643 | * The clock ratio is given for a full period of data (for I2S format |
644 | * both left and right channels), so it has to be divided by number of | |
645 | * tdm-slots (for I2S - divided by 2). | |
1b3bc060 DM |
646 | */ |
647 | if (dev->bclk_lrclk_ratio) | |
d486fea6 | 648 | word_length = dev->bclk_lrclk_ratio / dev->tdm_slots; |
1b3bc060 | 649 | |
ba764b3d DM |
650 | /* mapping of the XSSZ bit-field as described in the datasheet */ |
651 | fmt = (word_length >> 1) - 1; | |
b67f4487 | 652 | |
f5023af6 YY |
653 | if (dev->op_mode != DAVINCI_MCASP_DIT_MODE) { |
654 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, | |
655 | RXSSZ(fmt), RXSSZ(0x0F)); | |
656 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, | |
657 | TXSSZ(fmt), TXSSZ(0x0F)); | |
658 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, | |
79671892 | 659 | TXROT(tx_rotate), TXROT(7)); |
f5023af6 | 660 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, |
79671892 | 661 | RXROT(rx_rotate), RXROT(7)); |
f5023af6 YY |
662 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXMASK_REG, |
663 | mask); | |
664 | } | |
665 | ||
0c31cf3e | 666 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXMASK_REG, mask); |
0c31cf3e | 667 | |
b67f4487 C |
668 | return 0; |
669 | } | |
670 | ||
2952b27e MB |
671 | static int davinci_hw_common_param(struct davinci_audio_dev *dev, int stream, |
672 | int channels) | |
b67f4487 C |
673 | { |
674 | int i; | |
6a99fb5f C |
675 | u8 tx_ser = 0; |
676 | u8 rx_ser = 0; | |
2952b27e MB |
677 | u8 ser; |
678 | u8 slots = dev->tdm_slots; | |
679 | u8 max_active_serializers = (channels + slots - 1) / slots; | |
b67f4487 C |
680 | /* Default configuration */ |
681 | mcasp_set_bits(dev->base + DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT); | |
682 | ||
683 | /* All PINS as McASP */ | |
684 | mcasp_set_reg(dev->base + DAVINCI_MCASP_PFUNC_REG, 0x00000000); | |
685 | ||
686 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
687 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF); | |
688 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_XEVTCTL_REG, | |
689 | TXDATADMADIS); | |
690 | } else { | |
691 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF); | |
692 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_REVTCTL_REG, | |
693 | RXDATADMADIS); | |
694 | } | |
695 | ||
696 | for (i = 0; i < dev->num_serializer; i++) { | |
697 | mcasp_set_bits(dev->base + DAVINCI_MCASP_XRSRCTL_REG(i), | |
698 | dev->serial_dir[i]); | |
2952b27e MB |
699 | if (dev->serial_dir[i] == TX_MODE && |
700 | tx_ser < max_active_serializers) { | |
b67f4487 C |
701 | mcasp_set_bits(dev->base + DAVINCI_MCASP_PDIR_REG, |
702 | AXR(i)); | |
6a99fb5f | 703 | tx_ser++; |
2952b27e MB |
704 | } else if (dev->serial_dir[i] == RX_MODE && |
705 | rx_ser < max_active_serializers) { | |
b67f4487 C |
706 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_PDIR_REG, |
707 | AXR(i)); | |
6a99fb5f | 708 | rx_ser++; |
2952b27e MB |
709 | } else { |
710 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_XRSRCTL_REG(i), | |
711 | SRMOD_INACTIVE, SRMOD_MASK); | |
6a99fb5f C |
712 | } |
713 | } | |
714 | ||
ecf327c7 DM |
715 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) |
716 | ser = tx_ser; | |
717 | else | |
718 | ser = rx_ser; | |
719 | ||
720 | if (ser < max_active_serializers) { | |
721 | dev_warn(dev->dev, "stream has more channels (%d) than are " | |
722 | "enabled in mcasp (%d)\n", channels, ser * slots); | |
723 | return -EINVAL; | |
724 | } | |
725 | ||
6a99fb5f C |
726 | if (dev->txnumevt && stream == SNDRV_PCM_STREAM_PLAYBACK) { |
727 | if (dev->txnumevt * tx_ser > 64) | |
728 | dev->txnumevt = 1; | |
729 | ||
e5ec69da HG |
730 | switch (dev->version) { |
731 | case MCASP_VERSION_3: | |
732 | mcasp_mod_bits(dev->base + MCASP_VER3_WFIFOCTL, tx_ser, | |
6a99fb5f | 733 | NUMDMA_MASK); |
e5ec69da | 734 | mcasp_mod_bits(dev->base + MCASP_VER3_WFIFOCTL, |
6a99fb5f | 735 | ((dev->txnumevt * tx_ser) << 8), NUMEVT_MASK); |
e5ec69da HG |
736 | break; |
737 | default: | |
738 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, | |
739 | tx_ser, NUMDMA_MASK); | |
740 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, | |
741 | ((dev->txnumevt * tx_ser) << 8), NUMEVT_MASK); | |
742 | } | |
6a99fb5f C |
743 | } |
744 | ||
745 | if (dev->rxnumevt && stream == SNDRV_PCM_STREAM_CAPTURE) { | |
746 | if (dev->rxnumevt * rx_ser > 64) | |
747 | dev->rxnumevt = 1; | |
e5ec69da HG |
748 | switch (dev->version) { |
749 | case MCASP_VERSION_3: | |
750 | mcasp_mod_bits(dev->base + MCASP_VER3_RFIFOCTL, rx_ser, | |
6a99fb5f | 751 | NUMDMA_MASK); |
e5ec69da HG |
752 | mcasp_mod_bits(dev->base + MCASP_VER3_RFIFOCTL, |
753 | ((dev->rxnumevt * rx_ser) << 8), NUMEVT_MASK); | |
754 | break; | |
755 | default: | |
756 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, | |
757 | rx_ser, NUMDMA_MASK); | |
758 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, | |
6a99fb5f | 759 | ((dev->rxnumevt * rx_ser) << 8), NUMEVT_MASK); |
e5ec69da | 760 | } |
b67f4487 | 761 | } |
2952b27e MB |
762 | |
763 | return 0; | |
b67f4487 C |
764 | } |
765 | ||
766 | static void davinci_hw_param(struct davinci_audio_dev *dev, int stream) | |
767 | { | |
768 | int i, active_slots; | |
769 | u32 mask = 0; | |
770 | ||
771 | active_slots = (dev->tdm_slots > 31) ? 32 : dev->tdm_slots; | |
772 | for (i = 0; i < active_slots; i++) | |
773 | mask |= (1 << i); | |
774 | ||
6a99fb5f C |
775 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_ACLKXCTL_REG, TX_ASYNC); |
776 | ||
b67f4487 C |
777 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
778 | /* bit stream is MSB first with no delay */ | |
779 | /* DSP_B mode */ | |
b67f4487 C |
780 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXTDM_REG, mask); |
781 | mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, TXORD); | |
782 | ||
049cfaaa | 783 | if ((dev->tdm_slots >= 2) && (dev->tdm_slots <= 32)) |
b67f4487 C |
784 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_TXFMCTL_REG, |
785 | FSXMOD(dev->tdm_slots), FSXMOD(0x1FF)); | |
786 | else | |
787 | printk(KERN_ERR "playback tdm slot %d not supported\n", | |
788 | dev->tdm_slots); | |
b67f4487 C |
789 | } else { |
790 | /* bit stream is MSB first with no delay */ | |
791 | /* DSP_B mode */ | |
792 | mcasp_set_bits(dev->base + DAVINCI_MCASP_RXFMT_REG, RXORD); | |
b67f4487 C |
793 | mcasp_set_reg(dev->base + DAVINCI_MCASP_RXTDM_REG, mask); |
794 | ||
049cfaaa | 795 | if ((dev->tdm_slots >= 2) && (dev->tdm_slots <= 32)) |
b67f4487 C |
796 | mcasp_mod_bits(dev->base + DAVINCI_MCASP_RXFMCTL_REG, |
797 | FSRMOD(dev->tdm_slots), FSRMOD(0x1FF)); | |
798 | else | |
799 | printk(KERN_ERR "capture tdm slot %d not supported\n", | |
800 | dev->tdm_slots); | |
b67f4487 C |
801 | } |
802 | } | |
803 | ||
804 | /* S/PDIF */ | |
805 | static void davinci_hw_dit_param(struct davinci_audio_dev *dev) | |
806 | { | |
b67f4487 C |
807 | /* Set the TX format : 24 bit right rotation, 32 bit slot, Pad 0 |
808 | and LSB first */ | |
809 | mcasp_set_bits(dev->base + DAVINCI_MCASP_TXFMT_REG, | |
810 | TXROT(6) | TXSSZ(15)); | |
811 | ||
812 | /* Set TX frame synch : DIT Mode, 1 bit width, internal, rising edge */ | |
813 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXFMCTL_REG, | |
814 | AFSXE | FSXMOD(0x180)); | |
815 | ||
816 | /* Set the TX tdm : for all the slots */ | |
817 | mcasp_set_reg(dev->base + DAVINCI_MCASP_TXTDM_REG, 0xFFFFFFFF); | |
818 | ||
819 | /* Set the TX clock controls : div = 1 and internal */ | |
820 | mcasp_set_bits(dev->base + DAVINCI_MCASP_ACLKXCTL_REG, | |
821 | ACLKXE | TX_ASYNC); | |
822 | ||
823 | mcasp_clr_bits(dev->base + DAVINCI_MCASP_XEVTCTL_REG, TXDATADMADIS); | |
824 | ||
825 | /* Only 44100 and 48000 are valid, both have the same setting */ | |
826 | mcasp_set_bits(dev->base + DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXDIV(3)); | |
827 | ||
828 | /* Enable the DIT */ | |
829 | mcasp_set_bits(dev->base + DAVINCI_MCASP_TXDITCTL_REG, DITEN); | |
830 | } | |
831 | ||
832 | static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream, | |
833 | struct snd_pcm_hw_params *params, | |
834 | struct snd_soc_dai *cpu_dai) | |
835 | { | |
f0fba2ad | 836 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); |
b67f4487 | 837 | struct davinci_pcm_dma_params *dma_params = |
92e2a6f6 | 838 | &dev->dma_params[substream->stream]; |
b67f4487 | 839 | int word_length; |
4fa9c1a5 | 840 | u8 fifo_level; |
2952b27e | 841 | u8 slots = dev->tdm_slots; |
7c21a781 | 842 | u8 active_serializers; |
2952b27e MB |
843 | int channels; |
844 | struct snd_interval *pcm_channels = hw_param_interval(params, | |
845 | SNDRV_PCM_HW_PARAM_CHANNELS); | |
846 | channels = pcm_channels->min; | |
b67f4487 | 847 | |
7c21a781 MB |
848 | active_serializers = (channels + slots - 1) / slots; |
849 | ||
2952b27e MB |
850 | if (davinci_hw_common_param(dev, substream->stream, channels) == -EINVAL) |
851 | return -EINVAL; | |
6a99fb5f | 852 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
7c21a781 | 853 | fifo_level = dev->txnumevt * active_serializers; |
6a99fb5f | 854 | else |
7c21a781 | 855 | fifo_level = dev->rxnumevt * active_serializers; |
b67f4487 C |
856 | |
857 | if (dev->op_mode == DAVINCI_MCASP_DIT_MODE) | |
858 | davinci_hw_dit_param(dev); | |
859 | else | |
860 | davinci_hw_param(dev, substream->stream); | |
861 | ||
862 | switch (params_format(params)) { | |
0a9d1385 | 863 | case SNDRV_PCM_FORMAT_U8: |
b67f4487 C |
864 | case SNDRV_PCM_FORMAT_S8: |
865 | dma_params->data_type = 1; | |
ba764b3d | 866 | word_length = 8; |
b67f4487 C |
867 | break; |
868 | ||
0a9d1385 | 869 | case SNDRV_PCM_FORMAT_U16_LE: |
b67f4487 C |
870 | case SNDRV_PCM_FORMAT_S16_LE: |
871 | dma_params->data_type = 2; | |
ba764b3d | 872 | word_length = 16; |
b67f4487 C |
873 | break; |
874 | ||
21eb24d8 DM |
875 | case SNDRV_PCM_FORMAT_U24_3LE: |
876 | case SNDRV_PCM_FORMAT_S24_3LE: | |
21eb24d8 | 877 | dma_params->data_type = 3; |
ba764b3d | 878 | word_length = 24; |
21eb24d8 DM |
879 | break; |
880 | ||
6b7fa011 DM |
881 | case SNDRV_PCM_FORMAT_U24_LE: |
882 | case SNDRV_PCM_FORMAT_S24_LE: | |
0a9d1385 | 883 | case SNDRV_PCM_FORMAT_U32_LE: |
b67f4487 C |
884 | case SNDRV_PCM_FORMAT_S32_LE: |
885 | dma_params->data_type = 4; | |
ba764b3d | 886 | word_length = 32; |
b67f4487 C |
887 | break; |
888 | ||
889 | default: | |
890 | printk(KERN_WARNING "davinci-mcasp: unsupported PCM format"); | |
891 | return -EINVAL; | |
892 | } | |
6a99fb5f | 893 | |
4fa9c1a5 C |
894 | if (dev->version == MCASP_VERSION_2 && !fifo_level) |
895 | dma_params->acnt = 4; | |
896 | else | |
6a99fb5f C |
897 | dma_params->acnt = dma_params->data_type; |
898 | ||
4fa9c1a5 | 899 | dma_params->fifo_level = fifo_level; |
b67f4487 C |
900 | davinci_config_channel_size(dev, word_length); |
901 | ||
902 | return 0; | |
903 | } | |
904 | ||
905 | static int davinci_mcasp_trigger(struct snd_pcm_substream *substream, | |
906 | int cmd, struct snd_soc_dai *cpu_dai) | |
907 | { | |
f0fba2ad | 908 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); |
b67f4487 C |
909 | int ret = 0; |
910 | ||
911 | switch (cmd) { | |
b67f4487 | 912 | case SNDRV_PCM_TRIGGER_RESUME: |
e473b847 C |
913 | case SNDRV_PCM_TRIGGER_START: |
914 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
10884347 HG |
915 | ret = pm_runtime_get_sync(dev->dev); |
916 | if (IS_ERR_VALUE(ret)) | |
917 | dev_err(dev->dev, "pm_runtime_get_sync() failed\n"); | |
b67f4487 C |
918 | davinci_mcasp_start(dev, substream->stream); |
919 | break; | |
920 | ||
b67f4487 | 921 | case SNDRV_PCM_TRIGGER_SUSPEND: |
a47979b5 | 922 | davinci_mcasp_stop(dev, substream->stream); |
10884347 HG |
923 | ret = pm_runtime_put_sync(dev->dev); |
924 | if (IS_ERR_VALUE(ret)) | |
925 | dev_err(dev->dev, "pm_runtime_put_sync() failed\n"); | |
a47979b5 C |
926 | break; |
927 | ||
928 | case SNDRV_PCM_TRIGGER_STOP: | |
b67f4487 C |
929 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
930 | davinci_mcasp_stop(dev, substream->stream); | |
931 | break; | |
932 | ||
933 | default: | |
934 | ret = -EINVAL; | |
935 | } | |
936 | ||
937 | return ret; | |
938 | } | |
939 | ||
bedad0ca CPE |
940 | static int davinci_mcasp_startup(struct snd_pcm_substream *substream, |
941 | struct snd_soc_dai *dai) | |
942 | { | |
943 | struct davinci_audio_dev *dev = snd_soc_dai_get_drvdata(dai); | |
944 | ||
945 | snd_soc_dai_set_dma_data(dai, substream, dev->dma_params); | |
946 | return 0; | |
947 | } | |
948 | ||
85e7652d | 949 | static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = { |
bedad0ca | 950 | .startup = davinci_mcasp_startup, |
b67f4487 C |
951 | .trigger = davinci_mcasp_trigger, |
952 | .hw_params = davinci_mcasp_hw_params, | |
953 | .set_fmt = davinci_mcasp_set_dai_fmt, | |
4ed8c9b7 | 954 | .set_clkdiv = davinci_mcasp_set_clkdiv, |
5b66aa2d | 955 | .set_sysclk = davinci_mcasp_set_sysclk, |
b67f4487 C |
956 | }; |
957 | ||
0a9d1385 BG |
958 | #define DAVINCI_MCASP_PCM_FMTS (SNDRV_PCM_FMTBIT_S8 | \ |
959 | SNDRV_PCM_FMTBIT_U8 | \ | |
960 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
961 | SNDRV_PCM_FMTBIT_U16_LE | \ | |
21eb24d8 DM |
962 | SNDRV_PCM_FMTBIT_S24_LE | \ |
963 | SNDRV_PCM_FMTBIT_U24_LE | \ | |
964 | SNDRV_PCM_FMTBIT_S24_3LE | \ | |
965 | SNDRV_PCM_FMTBIT_U24_3LE | \ | |
0a9d1385 BG |
966 | SNDRV_PCM_FMTBIT_S32_LE | \ |
967 | SNDRV_PCM_FMTBIT_U32_LE) | |
968 | ||
f0fba2ad | 969 | static struct snd_soc_dai_driver davinci_mcasp_dai[] = { |
b67f4487 | 970 | { |
f0fba2ad | 971 | .name = "davinci-mcasp.0", |
b67f4487 C |
972 | .playback = { |
973 | .channels_min = 2, | |
2952b27e | 974 | .channels_max = 32 * 16, |
b67f4487 | 975 | .rates = DAVINCI_MCASP_RATES, |
0a9d1385 | 976 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
977 | }, |
978 | .capture = { | |
979 | .channels_min = 2, | |
2952b27e | 980 | .channels_max = 32 * 16, |
b67f4487 | 981 | .rates = DAVINCI_MCASP_RATES, |
0a9d1385 | 982 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
983 | }, |
984 | .ops = &davinci_mcasp_dai_ops, | |
985 | ||
986 | }, | |
987 | { | |
f0fba2ad | 988 | "davinci-mcasp.1", |
b67f4487 C |
989 | .playback = { |
990 | .channels_min = 1, | |
991 | .channels_max = 384, | |
992 | .rates = DAVINCI_MCASP_RATES, | |
0a9d1385 | 993 | .formats = DAVINCI_MCASP_PCM_FMTS, |
b67f4487 C |
994 | }, |
995 | .ops = &davinci_mcasp_dai_ops, | |
996 | }, | |
997 | ||
998 | }; | |
b67f4487 | 999 | |
eeef0eda KM |
1000 | static const struct snd_soc_component_driver davinci_mcasp_component = { |
1001 | .name = "davinci-mcasp", | |
1002 | }; | |
1003 | ||
3e3b8c34 HG |
1004 | static const struct of_device_id mcasp_dt_ids[] = { |
1005 | { | |
1006 | .compatible = "ti,dm646x-mcasp-audio", | |
1007 | .data = (void *)MCASP_VERSION_1, | |
1008 | }, | |
1009 | { | |
1010 | .compatible = "ti,da830-mcasp-audio", | |
1011 | .data = (void *)MCASP_VERSION_2, | |
1012 | }, | |
e5ec69da HG |
1013 | { |
1014 | .compatible = "ti,omap2-mcasp-audio", | |
1015 | .data = (void *)MCASP_VERSION_3, | |
1016 | }, | |
3e3b8c34 HG |
1017 | { /* sentinel */ } |
1018 | }; | |
1019 | MODULE_DEVICE_TABLE(of, mcasp_dt_ids); | |
1020 | ||
1021 | static struct snd_platform_data *davinci_mcasp_set_pdata_from_of( | |
1022 | struct platform_device *pdev) | |
1023 | { | |
1024 | struct device_node *np = pdev->dev.of_node; | |
1025 | struct snd_platform_data *pdata = NULL; | |
1026 | const struct of_device_id *match = | |
1027 | of_match_device(of_match_ptr(mcasp_dt_ids), &pdev->dev); | |
1028 | ||
1029 | const u32 *of_serial_dir32; | |
1030 | u8 *of_serial_dir; | |
1031 | u32 val; | |
1032 | int i, ret = 0; | |
1033 | ||
1034 | if (pdev->dev.platform_data) { | |
1035 | pdata = pdev->dev.platform_data; | |
1036 | return pdata; | |
1037 | } else if (match) { | |
1038 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); | |
1039 | if (!pdata) { | |
1040 | ret = -ENOMEM; | |
1041 | goto nodata; | |
1042 | } | |
1043 | } else { | |
1044 | /* control shouldn't reach here. something is wrong */ | |
1045 | ret = -EINVAL; | |
1046 | goto nodata; | |
1047 | } | |
1048 | ||
1049 | if (match->data) | |
1050 | pdata->version = (u8)((int)match->data); | |
1051 | ||
1052 | ret = of_property_read_u32(np, "op-mode", &val); | |
1053 | if (ret >= 0) | |
1054 | pdata->op_mode = val; | |
1055 | ||
1056 | ret = of_property_read_u32(np, "tdm-slots", &val); | |
2952b27e MB |
1057 | if (ret >= 0) { |
1058 | if (val < 2 || val > 32) { | |
1059 | dev_err(&pdev->dev, | |
1060 | "tdm-slots must be in rage [2-32]\n"); | |
1061 | ret = -EINVAL; | |
1062 | goto nodata; | |
1063 | } | |
1064 | ||
3e3b8c34 | 1065 | pdata->tdm_slots = val; |
2952b27e | 1066 | } |
3e3b8c34 HG |
1067 | |
1068 | ret = of_property_read_u32(np, "num-serializer", &val); | |
1069 | if (ret >= 0) | |
1070 | pdata->num_serializer = val; | |
1071 | ||
1072 | of_serial_dir32 = of_get_property(np, "serial-dir", &val); | |
1073 | val /= sizeof(u32); | |
1074 | if (val != pdata->num_serializer) { | |
1075 | dev_err(&pdev->dev, | |
1076 | "num-serializer(%d) != serial-dir size(%d)\n", | |
1077 | pdata->num_serializer, val); | |
1078 | ret = -EINVAL; | |
1079 | goto nodata; | |
1080 | } | |
1081 | ||
1082 | if (of_serial_dir32) { | |
1083 | of_serial_dir = devm_kzalloc(&pdev->dev, | |
1084 | (sizeof(*of_serial_dir) * val), | |
1085 | GFP_KERNEL); | |
1086 | if (!of_serial_dir) { | |
1087 | ret = -ENOMEM; | |
1088 | goto nodata; | |
1089 | } | |
1090 | ||
1091 | for (i = 0; i < pdata->num_serializer; i++) | |
1092 | of_serial_dir[i] = be32_to_cpup(&of_serial_dir32[i]); | |
1093 | ||
1094 | pdata->serial_dir = of_serial_dir; | |
1095 | } | |
1096 | ||
1097 | ret = of_property_read_u32(np, "tx-num-evt", &val); | |
1098 | if (ret >= 0) | |
1099 | pdata->txnumevt = val; | |
1100 | ||
1101 | ret = of_property_read_u32(np, "rx-num-evt", &val); | |
1102 | if (ret >= 0) | |
1103 | pdata->rxnumevt = val; | |
1104 | ||
1105 | ret = of_property_read_u32(np, "sram-size-playback", &val); | |
1106 | if (ret >= 0) | |
1107 | pdata->sram_size_playback = val; | |
1108 | ||
1109 | ret = of_property_read_u32(np, "sram-size-capture", &val); | |
1110 | if (ret >= 0) | |
1111 | pdata->sram_size_capture = val; | |
1112 | ||
1113 | return pdata; | |
1114 | ||
1115 | nodata: | |
1116 | if (ret < 0) { | |
1117 | dev_err(&pdev->dev, "Error populating platform data, err %d\n", | |
1118 | ret); | |
1119 | pdata = NULL; | |
1120 | } | |
1121 | return pdata; | |
1122 | } | |
1123 | ||
b67f4487 C |
1124 | static int davinci_mcasp_probe(struct platform_device *pdev) |
1125 | { | |
1126 | struct davinci_pcm_dma_params *dma_data; | |
1127 | struct resource *mem, *ioarea, *res; | |
1128 | struct snd_platform_data *pdata; | |
1129 | struct davinci_audio_dev *dev; | |
96d31e2b | 1130 | int ret; |
b67f4487 | 1131 | |
3e3b8c34 HG |
1132 | if (!pdev->dev.platform_data && !pdev->dev.of_node) { |
1133 | dev_err(&pdev->dev, "No platform data supplied\n"); | |
1134 | return -EINVAL; | |
1135 | } | |
1136 | ||
96d31e2b JL |
1137 | dev = devm_kzalloc(&pdev->dev, sizeof(struct davinci_audio_dev), |
1138 | GFP_KERNEL); | |
b67f4487 C |
1139 | if (!dev) |
1140 | return -ENOMEM; | |
1141 | ||
3e3b8c34 HG |
1142 | pdata = davinci_mcasp_set_pdata_from_of(pdev); |
1143 | if (!pdata) { | |
1144 | dev_err(&pdev->dev, "no platform data\n"); | |
1145 | return -EINVAL; | |
1146 | } | |
1147 | ||
b67f4487 C |
1148 | mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1149 | if (!mem) { | |
1150 | dev_err(&pdev->dev, "no mem resource?\n"); | |
96d31e2b | 1151 | return -ENODEV; |
b67f4487 C |
1152 | } |
1153 | ||
96d31e2b | 1154 | ioarea = devm_request_mem_region(&pdev->dev, mem->start, |
d852f446 | 1155 | resource_size(mem), pdev->name); |
b67f4487 C |
1156 | if (!ioarea) { |
1157 | dev_err(&pdev->dev, "Audio region already claimed\n"); | |
96d31e2b | 1158 | return -EBUSY; |
b67f4487 C |
1159 | } |
1160 | ||
10884347 | 1161 | pm_runtime_enable(&pdev->dev); |
b67f4487 | 1162 | |
10884347 HG |
1163 | ret = pm_runtime_get_sync(&pdev->dev); |
1164 | if (IS_ERR_VALUE(ret)) { | |
1165 | dev_err(&pdev->dev, "pm_runtime_get_sync() failed\n"); | |
1166 | return ret; | |
1167 | } | |
b67f4487 | 1168 | |
96d31e2b | 1169 | dev->base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); |
4f82f028 VB |
1170 | if (!dev->base) { |
1171 | dev_err(&pdev->dev, "ioremap failed\n"); | |
1172 | ret = -ENOMEM; | |
1173 | goto err_release_clk; | |
1174 | } | |
1175 | ||
b67f4487 C |
1176 | dev->op_mode = pdata->op_mode; |
1177 | dev->tdm_slots = pdata->tdm_slots; | |
1178 | dev->num_serializer = pdata->num_serializer; | |
1179 | dev->serial_dir = pdata->serial_dir; | |
6a99fb5f C |
1180 | dev->version = pdata->version; |
1181 | dev->txnumevt = pdata->txnumevt; | |
1182 | dev->rxnumevt = pdata->rxnumevt; | |
10884347 | 1183 | dev->dev = &pdev->dev; |
b67f4487 | 1184 | |
92e2a6f6 | 1185 | dma_data = &dev->dma_params[SNDRV_PCM_STREAM_PLAYBACK]; |
48519f0a SN |
1186 | dma_data->asp_chan_q = pdata->asp_chan_q; |
1187 | dma_data->ram_chan_q = pdata->ram_chan_q; | |
b8ec56d8 | 1188 | dma_data->sram_pool = pdata->sram_pool; |
a0c83263 | 1189 | dma_data->sram_size = pdata->sram_size_playback; |
92e2a6f6 | 1190 | dma_data->dma_addr = (dma_addr_t) (pdata->tx_dma_offset + |
4f82f028 | 1191 | mem->start); |
b67f4487 C |
1192 | |
1193 | /* first TX, then RX */ | |
1194 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); | |
1195 | if (!res) { | |
1196 | dev_err(&pdev->dev, "no DMA resource\n"); | |
02ffc5f3 | 1197 | ret = -ENODEV; |
96d31e2b | 1198 | goto err_release_clk; |
b67f4487 C |
1199 | } |
1200 | ||
92e2a6f6 TK |
1201 | dma_data->channel = res->start; |
1202 | ||
1203 | dma_data = &dev->dma_params[SNDRV_PCM_STREAM_CAPTURE]; | |
48519f0a SN |
1204 | dma_data->asp_chan_q = pdata->asp_chan_q; |
1205 | dma_data->ram_chan_q = pdata->ram_chan_q; | |
b8ec56d8 | 1206 | dma_data->sram_pool = pdata->sram_pool; |
a0c83263 | 1207 | dma_data->sram_size = pdata->sram_size_capture; |
92e2a6f6 | 1208 | dma_data->dma_addr = (dma_addr_t)(pdata->rx_dma_offset + |
4f82f028 | 1209 | mem->start); |
b67f4487 C |
1210 | |
1211 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); | |
1212 | if (!res) { | |
1213 | dev_err(&pdev->dev, "no DMA resource\n"); | |
02ffc5f3 | 1214 | ret = -ENODEV; |
96d31e2b | 1215 | goto err_release_clk; |
b67f4487 C |
1216 | } |
1217 | ||
92e2a6f6 | 1218 | dma_data->channel = res->start; |
f0fba2ad | 1219 | dev_set_drvdata(&pdev->dev, dev); |
eeef0eda KM |
1220 | ret = snd_soc_register_component(&pdev->dev, &davinci_mcasp_component, |
1221 | &davinci_mcasp_dai[pdata->op_mode], 1); | |
b67f4487 C |
1222 | |
1223 | if (ret != 0) | |
96d31e2b | 1224 | goto err_release_clk; |
f08095a4 HG |
1225 | |
1226 | ret = davinci_soc_platform_register(&pdev->dev); | |
1227 | if (ret) { | |
1228 | dev_err(&pdev->dev, "register PCM failed: %d\n", ret); | |
eeef0eda | 1229 | goto err_unregister_component; |
f08095a4 HG |
1230 | } |
1231 | ||
b67f4487 C |
1232 | return 0; |
1233 | ||
eeef0eda KM |
1234 | err_unregister_component: |
1235 | snd_soc_unregister_component(&pdev->dev); | |
eef6d7b8 | 1236 | err_release_clk: |
10884347 HG |
1237 | pm_runtime_put_sync(&pdev->dev); |
1238 | pm_runtime_disable(&pdev->dev); | |
b67f4487 C |
1239 | return ret; |
1240 | } | |
1241 | ||
1242 | static int davinci_mcasp_remove(struct platform_device *pdev) | |
1243 | { | |
b67f4487 | 1244 | |
eeef0eda | 1245 | snd_soc_unregister_component(&pdev->dev); |
f08095a4 | 1246 | davinci_soc_platform_unregister(&pdev->dev); |
10884347 HG |
1247 | |
1248 | pm_runtime_put_sync(&pdev->dev); | |
1249 | pm_runtime_disable(&pdev->dev); | |
b67f4487 | 1250 | |
b67f4487 C |
1251 | return 0; |
1252 | } | |
1253 | ||
1254 | static struct platform_driver davinci_mcasp_driver = { | |
1255 | .probe = davinci_mcasp_probe, | |
1256 | .remove = davinci_mcasp_remove, | |
1257 | .driver = { | |
1258 | .name = "davinci-mcasp", | |
1259 | .owner = THIS_MODULE, | |
3e3b8c34 | 1260 | .of_match_table = of_match_ptr(mcasp_dt_ids), |
b67f4487 C |
1261 | }, |
1262 | }; | |
1263 | ||
f9b8a514 | 1264 | module_platform_driver(davinci_mcasp_driver); |
b67f4487 C |
1265 | |
1266 | MODULE_AUTHOR("Steve Chen"); | |
1267 | MODULE_DESCRIPTION("TI DAVINCI McASP SoC Interface"); | |
1268 | MODULE_LICENSE("GPL"); | |
1269 |