2 * ALSA SoC McASP Audio Layer for TI DAVINCI processor
4 * Multi-channel Audio Serial Port Driver
6 * Author: Nirmal Pandey <n-pandey@ti.com>,
7 * Suresh Rajashekara <suresh.r@ti.com>
8 * Steve Chen <schen@.mvista.com>
10 * Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
11 * Copyright: (C) 2009 Texas Instruments, India
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.
18 #include <linux/init.h>
19 #include <linux/module.h>
20 #include <linux/device.h>
21 #include <linux/slab.h>
22 #include <linux/delay.h>
24 #include <linux/clk.h>
25 #include <linux/pm_runtime.h>
27 #include <linux/of_platform.h>
28 #include <linux/of_device.h>
30 #include <sound/asoundef.h>
31 #include <sound/core.h>
32 #include <sound/pcm.h>
33 #include <sound/pcm_params.h>
34 #include <sound/initval.h>
35 #include <sound/soc.h>
36 #include <sound/dmaengine_pcm.h>
37 #include <sound/omap-pcm.h>
39 #include "davinci-pcm.h"
41 #include "davinci-mcasp.h"
43 #define MCASP_MAX_AFIFO_DEPTH 64
45 static u32 context_regs[] = {
46 DAVINCI_MCASP_TXFMCTL_REG,
47 DAVINCI_MCASP_RXFMCTL_REG,
48 DAVINCI_MCASP_TXFMT_REG,
49 DAVINCI_MCASP_RXFMT_REG,
50 DAVINCI_MCASP_ACLKXCTL_REG,
51 DAVINCI_MCASP_ACLKRCTL_REG,
52 DAVINCI_MCASP_AHCLKXCTL_REG,
53 DAVINCI_MCASP_AHCLKRCTL_REG,
54 DAVINCI_MCASP_PDIR_REG,
55 DAVINCI_MCASP_RXMASK_REG,
56 DAVINCI_MCASP_TXMASK_REG,
57 DAVINCI_MCASP_RXTDM_REG,
58 DAVINCI_MCASP_TXTDM_REG,
61 struct davinci_mcasp_context {
62 u32 config_regs[ARRAY_SIZE(context_regs)];
63 u32 afifo_regs[2]; /* for read/write fifo control registers */
64 u32 *xrsr_regs; /* for serializer configuration */
67 struct davinci_mcasp {
68 struct davinci_pcm_dma_params dma_params[2];
69 struct snd_dmaengine_dai_dma_data dma_data[2];
74 /* McASP specific data */
87 /* McASP FIFO related */
93 #ifdef CONFIG_PM_SLEEP
94 struct davinci_mcasp_context context;
98 static inline void mcasp_set_bits(struct davinci_mcasp *mcasp, u32 offset,
101 void __iomem *reg = mcasp->base + offset;
102 __raw_writel(__raw_readl(reg) | val, reg);
105 static inline void mcasp_clr_bits(struct davinci_mcasp *mcasp, u32 offset,
108 void __iomem *reg = mcasp->base + offset;
109 __raw_writel((__raw_readl(reg) & ~(val)), reg);
112 static inline void mcasp_mod_bits(struct davinci_mcasp *mcasp, u32 offset,
115 void __iomem *reg = mcasp->base + offset;
116 __raw_writel((__raw_readl(reg) & ~mask) | val, reg);
119 static inline void mcasp_set_reg(struct davinci_mcasp *mcasp, u32 offset,
122 __raw_writel(val, mcasp->base + offset);
125 static inline u32 mcasp_get_reg(struct davinci_mcasp *mcasp, u32 offset)
127 return (u32)__raw_readl(mcasp->base + offset);
130 static void mcasp_set_ctl_reg(struct davinci_mcasp *mcasp, u32 ctl_reg, u32 val)
134 mcasp_set_bits(mcasp, ctl_reg, val);
136 /* programming GBLCTL needs to read back from GBLCTL and verfiy */
137 /* loop count is to avoid the lock-up */
138 for (i = 0; i < 1000; i++) {
139 if ((mcasp_get_reg(mcasp, ctl_reg) & val) == val)
143 if (i == 1000 && ((mcasp_get_reg(mcasp, ctl_reg) & val) != val))
144 printk(KERN_ERR "GBLCTL write error\n");
147 static bool mcasp_is_synchronous(struct davinci_mcasp *mcasp)
149 u32 rxfmctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_RXFMCTL_REG);
150 u32 aclkxctl = mcasp_get_reg(mcasp, DAVINCI_MCASP_ACLKXCTL_REG);
152 return !(aclkxctl & TX_ASYNC) && rxfmctl & AFSRE;
155 static void mcasp_start_rx(struct davinci_mcasp *mcasp)
158 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXHCLKRST);
159 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXCLKRST);
161 * When ASYNC == 0 the transmit and receive sections operate
162 * synchronously from the transmit clock and frame sync. We need to make
163 * sure that the TX signlas are enabled when starting reception.
165 if (mcasp_is_synchronous(mcasp)) {
166 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST);
167 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST);
170 /* Activate serializer(s) */
171 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXSERCLR);
172 /* Release RX state machine */
173 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXSMRST);
174 /* Release Frame Sync generator */
175 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, RXFSRST);
176 if (mcasp_is_synchronous(mcasp))
177 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXFSRST);
180 static void mcasp_start_tx(struct davinci_mcasp *mcasp)
185 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXHCLKRST);
186 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXCLKRST);
187 /* Activate serializer(s) */
188 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXSERCLR);
190 /* wait for XDATA to be cleared */
192 while (!(mcasp_get_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG) &
193 ~XRDATA) && (cnt < 100000))
196 /* Release TX state machine */
197 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXSMRST);
198 /* Release Frame Sync generator */
199 mcasp_set_ctl_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, TXFSRST);
202 static void davinci_mcasp_start(struct davinci_mcasp *mcasp, int stream)
208 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
209 if (mcasp->txnumevt) { /* enable FIFO */
210 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET;
211 mcasp_clr_bits(mcasp, reg, FIFO_ENABLE);
212 mcasp_set_bits(mcasp, reg, FIFO_ENABLE);
214 mcasp_start_tx(mcasp);
216 if (mcasp->rxnumevt) { /* enable FIFO */
217 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET;
218 mcasp_clr_bits(mcasp, reg, FIFO_ENABLE);
219 mcasp_set_bits(mcasp, reg, FIFO_ENABLE);
221 mcasp_start_rx(mcasp);
225 static void mcasp_stop_rx(struct davinci_mcasp *mcasp)
228 * In synchronous mode stop the TX clocks if no other stream is
231 if (mcasp_is_synchronous(mcasp) && !mcasp->streams)
232 mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, 0);
234 mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLR_REG, 0);
235 mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF);
237 if (mcasp->rxnumevt) { /* disable FIFO */
238 u32 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET;
240 mcasp_clr_bits(mcasp, reg, FIFO_ENABLE);
244 static void mcasp_stop_tx(struct davinci_mcasp *mcasp)
249 * In synchronous mode keep TX clocks running if the capture stream is
252 if (mcasp_is_synchronous(mcasp) && mcasp->streams)
253 val = TXHCLKRST | TXCLKRST | TXFSRST;
255 mcasp_set_reg(mcasp, DAVINCI_MCASP_GBLCTLX_REG, val);
256 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF);
258 if (mcasp->txnumevt) { /* disable FIFO */
259 u32 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET;
261 mcasp_clr_bits(mcasp, reg, FIFO_ENABLE);
265 static void davinci_mcasp_stop(struct davinci_mcasp *mcasp, int stream)
269 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
270 mcasp_stop_tx(mcasp);
272 mcasp_stop_rx(mcasp);
275 static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
278 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
284 pm_runtime_get_sync(mcasp->dev);
285 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
286 case SND_SOC_DAIFMT_DSP_A:
287 mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);
288 mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR);
289 /* 1st data bit occur one ACLK cycle after the frame sync */
292 case SND_SOC_DAIFMT_DSP_B:
293 case SND_SOC_DAIFMT_AC97:
294 mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);
295 mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR);
296 /* No delay after FS */
299 case SND_SOC_DAIFMT_I2S:
300 /* configure a full-word SYNC pulse (LRCLK) */
301 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);
302 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR);
303 /* 1st data bit occur one ACLK cycle after the frame sync */
305 /* FS need to be inverted */
308 case SND_SOC_DAIFMT_LEFT_J:
309 /* configure a full-word SYNC pulse (LRCLK) */
310 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXDUR);
311 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRDUR);
312 /* No delay after FS */
320 mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, FSXDLY(data_delay),
322 mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, FSRDLY(data_delay),
325 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
326 case SND_SOC_DAIFMT_CBS_CFS:
327 /* codec is clock and frame slave */
328 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE);
329 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE);
331 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE);
332 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE);
334 mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, ACLKX | ACLKR);
335 mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AFSX | AFSR);
336 mcasp->bclk_master = 1;
338 case SND_SOC_DAIFMT_CBM_CFS:
339 /* codec is clock master and frame slave */
340 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE);
341 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE);
343 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE);
344 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE);
346 mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, ACLKX | ACLKR);
347 mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AFSX | AFSR);
348 mcasp->bclk_master = 0;
350 case SND_SOC_DAIFMT_CBM_CFM:
351 /* codec is clock and frame master */
352 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE);
353 mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE);
355 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRE);
356 mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, AFSRE);
358 mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG,
359 ACLKX | AHCLKX | AFSX | ACLKR | AHCLKR | AFSR);
360 mcasp->bclk_master = 0;
367 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
368 case SND_SOC_DAIFMT_IB_NF:
369 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL);
370 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL);
371 fs_pol_rising = true;
373 case SND_SOC_DAIFMT_NB_IF:
374 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL);
375 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL);
376 fs_pol_rising = false;
378 case SND_SOC_DAIFMT_IB_IF:
379 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL);
380 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL);
381 fs_pol_rising = false;
383 case SND_SOC_DAIFMT_NB_NF:
384 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXPOL);
385 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG, ACLKRPOL);
386 fs_pol_rising = true;
394 fs_pol_rising = !fs_pol_rising;
397 mcasp_clr_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL);
398 mcasp_clr_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL);
400 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG, FSXPOL);
401 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG, FSRPOL);
404 pm_runtime_put_sync(mcasp->dev);
408 static int __davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id,
409 int div, bool explicit)
411 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
414 case 0: /* MCLK divider */
415 mcasp_mod_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG,
416 AHCLKXDIV(div - 1), AHCLKXDIV_MASK);
417 mcasp_mod_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG,
418 AHCLKRDIV(div - 1), AHCLKRDIV_MASK);
421 case 1: /* BCLK divider */
422 mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG,
423 ACLKXDIV(div - 1), ACLKXDIV_MASK);
424 mcasp_mod_bits(mcasp, DAVINCI_MCASP_ACLKRCTL_REG,
425 ACLKRDIV(div - 1), ACLKRDIV_MASK);
427 mcasp->bclk_div = div;
430 case 2: /* BCLK/LRCLK ratio */
431 mcasp->bclk_lrclk_ratio = div;
441 static int davinci_mcasp_set_clkdiv(struct snd_soc_dai *dai, int div_id,
444 return __davinci_mcasp_set_clkdiv(dai, div_id, div, 1);
447 static int davinci_mcasp_set_sysclk(struct snd_soc_dai *dai, int clk_id,
448 unsigned int freq, int dir)
450 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
452 if (dir == SND_SOC_CLOCK_OUT) {
453 mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE);
454 mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE);
455 mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AHCLKX);
457 mcasp_clr_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXE);
458 mcasp_clr_bits(mcasp, DAVINCI_MCASP_AHCLKRCTL_REG, AHCLKRE);
459 mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AHCLKX);
462 mcasp->sysclk_freq = freq;
467 static int davinci_config_channel_size(struct davinci_mcasp *mcasp,
471 u32 tx_rotate = (word_length / 4) & 0x7;
472 u32 mask = (1ULL << word_length) - 1;
474 * For captured data we should not rotate, inversion and masking is
475 * enoguh to get the data to the right position:
476 * Format data from bus after reverse (XRBUF)
477 * S16_LE: |LSB|MSB|xxx|xxx| |xxx|xxx|MSB|LSB|
478 * S24_3LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
479 * S24_LE: |LSB|DAT|MSB|xxx| |xxx|MSB|DAT|LSB|
480 * S32_LE: |LSB|DAT|DAT|MSB| |MSB|DAT|DAT|LSB|
485 * if s BCLK-to-LRCLK ratio has been configured via the set_clkdiv()
486 * callback, take it into account here. That allows us to for example
487 * send 32 bits per channel to the codec, while only 16 of them carry
489 * The clock ratio is given for a full period of data (for I2S format
490 * both left and right channels), so it has to be divided by number of
491 * tdm-slots (for I2S - divided by 2).
493 if (mcasp->bclk_lrclk_ratio)
494 word_length = mcasp->bclk_lrclk_ratio / mcasp->tdm_slots;
496 /* mapping of the XSSZ bit-field as described in the datasheet */
497 fmt = (word_length >> 1) - 1;
499 if (mcasp->op_mode != DAVINCI_MCASP_DIT_MODE) {
500 mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, RXSSZ(fmt),
502 mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXSSZ(fmt),
504 mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXROT(tx_rotate),
506 mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, RXROT(rx_rotate),
508 mcasp_set_reg(mcasp, DAVINCI_MCASP_RXMASK_REG, mask);
511 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXMASK_REG, mask);
516 static int mcasp_common_hw_param(struct davinci_mcasp *mcasp, int stream,
517 int period_words, int channels)
519 struct davinci_pcm_dma_params *dma_params = &mcasp->dma_params[stream];
520 struct snd_dmaengine_dai_dma_data *dma_data = &mcasp->dma_data[stream];
524 u8 slots = mcasp->tdm_slots;
525 u8 max_active_serializers = (channels + slots - 1) / slots;
526 int active_serializers, numevt, n;
528 /* Default configuration */
529 if (mcasp->version < MCASP_VERSION_3)
530 mcasp_set_bits(mcasp, DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT);
532 /* All PINS as McASP */
533 mcasp_set_reg(mcasp, DAVINCI_MCASP_PFUNC_REG, 0x00000000);
535 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
536 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXSTAT_REG, 0xFFFFFFFF);
537 mcasp_clr_bits(mcasp, DAVINCI_MCASP_XEVTCTL_REG, TXDATADMADIS);
539 mcasp_set_reg(mcasp, DAVINCI_MCASP_RXSTAT_REG, 0xFFFFFFFF);
540 mcasp_clr_bits(mcasp, DAVINCI_MCASP_REVTCTL_REG, RXDATADMADIS);
543 for (i = 0; i < mcasp->num_serializer; i++) {
544 mcasp_set_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i),
545 mcasp->serial_dir[i]);
546 if (mcasp->serial_dir[i] == TX_MODE &&
547 tx_ser < max_active_serializers) {
548 mcasp_set_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AXR(i));
550 } else if (mcasp->serial_dir[i] == RX_MODE &&
551 rx_ser < max_active_serializers) {
552 mcasp_clr_bits(mcasp, DAVINCI_MCASP_PDIR_REG, AXR(i));
555 mcasp_mod_bits(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i),
556 SRMOD_INACTIVE, SRMOD_MASK);
560 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
561 active_serializers = tx_ser;
562 numevt = mcasp->txnumevt;
563 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET;
565 active_serializers = rx_ser;
566 numevt = mcasp->rxnumevt;
567 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET;
570 if (active_serializers < max_active_serializers) {
571 dev_warn(mcasp->dev, "stream has more channels (%d) than are "
572 "enabled in mcasp (%d)\n", channels,
573 active_serializers * slots);
577 /* AFIFO is not in use */
579 /* Configure the burst size for platform drivers */
580 if (active_serializers > 1) {
582 * If more than one serializers are in use we have one
583 * DMA request to provide data for all serializers.
584 * For example if three serializers are enabled the DMA
585 * need to transfer three words per DMA request.
587 dma_params->fifo_level = active_serializers;
588 dma_data->maxburst = active_serializers;
590 dma_params->fifo_level = 0;
591 dma_data->maxburst = 0;
596 if (period_words % active_serializers) {
597 dev_err(mcasp->dev, "Invalid combination of period words and "
598 "active serializers: %d, %d\n", period_words,
604 * Calculate the optimal AFIFO depth for platform side:
605 * The number of words for numevt need to be in steps of active
608 n = numevt % active_serializers;
610 numevt += (active_serializers - n);
611 while (period_words % numevt && numevt > 0)
612 numevt -= active_serializers;
614 numevt = active_serializers;
616 mcasp_mod_bits(mcasp, reg, active_serializers, NUMDMA_MASK);
617 mcasp_mod_bits(mcasp, reg, NUMEVT(numevt), NUMEVT_MASK);
619 /* Configure the burst size for platform drivers */
622 dma_params->fifo_level = numevt;
623 dma_data->maxburst = numevt;
628 static int mcasp_i2s_hw_param(struct davinci_mcasp *mcasp, int stream)
634 if ((mcasp->tdm_slots < 2) || (mcasp->tdm_slots > 32)) {
635 dev_err(mcasp->dev, "tdm slot %d not supported\n",
640 active_slots = (mcasp->tdm_slots > 31) ? 32 : mcasp->tdm_slots;
641 for (i = 0; i < active_slots; i++)
644 mcasp_clr_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, TX_ASYNC);
646 if (!mcasp->dat_port)
649 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXTDM_REG, mask);
650 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, busel | TXORD);
651 mcasp_mod_bits(mcasp, DAVINCI_MCASP_TXFMCTL_REG,
652 FSXMOD(mcasp->tdm_slots), FSXMOD(0x1FF));
654 mcasp_set_reg(mcasp, DAVINCI_MCASP_RXTDM_REG, mask);
655 mcasp_set_bits(mcasp, DAVINCI_MCASP_RXFMT_REG, busel | RXORD);
656 mcasp_mod_bits(mcasp, DAVINCI_MCASP_RXFMCTL_REG,
657 FSRMOD(mcasp->tdm_slots), FSRMOD(0x1FF));
663 static int mcasp_dit_hw_param(struct davinci_mcasp *mcasp,
667 u8 *cs_bytes = (u8*) &cs_value;
669 /* Set the TX format : 24 bit right rotation, 32 bit slot, Pad 0
671 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXFMT_REG, TXROT(6) | TXSSZ(15));
673 /* Set TX frame synch : DIT Mode, 1 bit width, internal, rising edge */
674 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXFMCTL_REG, AFSXE | FSXMOD(0x180));
676 /* Set the TX tdm : for all the slots */
677 mcasp_set_reg(mcasp, DAVINCI_MCASP_TXTDM_REG, 0xFFFFFFFF);
679 /* Set the TX clock controls : div = 1 and internal */
680 mcasp_set_bits(mcasp, DAVINCI_MCASP_ACLKXCTL_REG, ACLKXE | TX_ASYNC);
682 mcasp_clr_bits(mcasp, DAVINCI_MCASP_XEVTCTL_REG, TXDATADMADIS);
684 /* Only 44100 and 48000 are valid, both have the same setting */
685 mcasp_set_bits(mcasp, DAVINCI_MCASP_AHCLKXCTL_REG, AHCLKXDIV(3));
688 mcasp_set_bits(mcasp, DAVINCI_MCASP_TXDITCTL_REG, DITEN);
690 /* Set S/PDIF channel status bits */
691 cs_bytes[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
692 cs_bytes[1] = IEC958_AES1_CON_PCM_CODER;
696 cs_bytes[3] |= IEC958_AES3_CON_FS_22050;
699 cs_bytes[3] |= IEC958_AES3_CON_FS_24000;
702 cs_bytes[3] |= IEC958_AES3_CON_FS_32000;
705 cs_bytes[3] |= IEC958_AES3_CON_FS_44100;
708 cs_bytes[3] |= IEC958_AES3_CON_FS_48000;
711 cs_bytes[3] |= IEC958_AES3_CON_FS_88200;
714 cs_bytes[3] |= IEC958_AES3_CON_FS_96000;
717 cs_bytes[3] |= IEC958_AES3_CON_FS_176400;
720 cs_bytes[3] |= IEC958_AES3_CON_FS_192000;
723 printk(KERN_WARNING "unsupported sampling rate: %d\n", rate);
727 mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRA_REG, cs_value);
728 mcasp_set_reg(mcasp, DAVINCI_MCASP_DITCSRB_REG, cs_value);
733 static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
734 struct snd_pcm_hw_params *params,
735 struct snd_soc_dai *cpu_dai)
737 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
738 struct davinci_pcm_dma_params *dma_params =
739 &mcasp->dma_params[substream->stream];
741 int channels = params_channels(params);
742 int period_size = params_period_size(params);
746 * If mcasp is BCLK master, and a BCLK divider was not provided by
747 * the machine driver, we need to calculate the ratio.
749 if (mcasp->bclk_master && mcasp->bclk_div == 0 && mcasp->sysclk_freq) {
750 unsigned int bclk_freq = snd_soc_params_to_bclk(params);
751 unsigned int div = mcasp->sysclk_freq / bclk_freq;
752 if (mcasp->sysclk_freq % bclk_freq != 0) {
753 if (((mcasp->sysclk_freq / div) - bclk_freq) >
754 (bclk_freq - (mcasp->sysclk_freq / (div+1))))
757 "Inaccurate BCLK: %u Hz / %u != %u Hz\n",
758 mcasp->sysclk_freq, div, bclk_freq);
760 __davinci_mcasp_set_clkdiv(cpu_dai, 1, div, 0);
763 ret = mcasp_common_hw_param(mcasp, substream->stream,
764 period_size * channels, channels);
768 if (mcasp->op_mode == DAVINCI_MCASP_DIT_MODE)
769 ret = mcasp_dit_hw_param(mcasp, params_rate(params));
771 ret = mcasp_i2s_hw_param(mcasp, substream->stream);
776 switch (params_format(params)) {
777 case SNDRV_PCM_FORMAT_U8:
778 case SNDRV_PCM_FORMAT_S8:
779 dma_params->data_type = 1;
783 case SNDRV_PCM_FORMAT_U16_LE:
784 case SNDRV_PCM_FORMAT_S16_LE:
785 dma_params->data_type = 2;
789 case SNDRV_PCM_FORMAT_U24_3LE:
790 case SNDRV_PCM_FORMAT_S24_3LE:
791 dma_params->data_type = 3;
795 case SNDRV_PCM_FORMAT_U24_LE:
796 case SNDRV_PCM_FORMAT_S24_LE:
797 dma_params->data_type = 4;
801 case SNDRV_PCM_FORMAT_U32_LE:
802 case SNDRV_PCM_FORMAT_S32_LE:
803 dma_params->data_type = 4;
808 printk(KERN_WARNING "davinci-mcasp: unsupported PCM format");
812 if (mcasp->version == MCASP_VERSION_2 && !dma_params->fifo_level)
813 dma_params->acnt = 4;
815 dma_params->acnt = dma_params->data_type;
817 davinci_config_channel_size(mcasp, word_length);
822 static int davinci_mcasp_trigger(struct snd_pcm_substream *substream,
823 int cmd, struct snd_soc_dai *cpu_dai)
825 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
829 case SNDRV_PCM_TRIGGER_RESUME:
830 case SNDRV_PCM_TRIGGER_START:
831 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
832 davinci_mcasp_start(mcasp, substream->stream);
834 case SNDRV_PCM_TRIGGER_SUSPEND:
835 case SNDRV_PCM_TRIGGER_STOP:
836 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
837 davinci_mcasp_stop(mcasp, substream->stream);
847 static const struct snd_soc_dai_ops davinci_mcasp_dai_ops = {
848 .trigger = davinci_mcasp_trigger,
849 .hw_params = davinci_mcasp_hw_params,
850 .set_fmt = davinci_mcasp_set_dai_fmt,
851 .set_clkdiv = davinci_mcasp_set_clkdiv,
852 .set_sysclk = davinci_mcasp_set_sysclk,
855 static int davinci_mcasp_dai_probe(struct snd_soc_dai *dai)
857 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
859 if (mcasp->version >= MCASP_VERSION_3) {
860 /* Using dmaengine PCM */
861 dai->playback_dma_data =
862 &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK];
863 dai->capture_dma_data =
864 &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE];
866 /* Using davinci-pcm */
867 dai->playback_dma_data = mcasp->dma_params;
868 dai->capture_dma_data = mcasp->dma_params;
874 #ifdef CONFIG_PM_SLEEP
875 static int davinci_mcasp_suspend(struct snd_soc_dai *dai)
877 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
878 struct davinci_mcasp_context *context = &mcasp->context;
882 for (i = 0; i < ARRAY_SIZE(context_regs); i++)
883 context->config_regs[i] = mcasp_get_reg(mcasp, context_regs[i]);
885 if (mcasp->txnumevt) {
886 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET;
887 context->afifo_regs[0] = mcasp_get_reg(mcasp, reg);
889 if (mcasp->rxnumevt) {
890 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET;
891 context->afifo_regs[1] = mcasp_get_reg(mcasp, reg);
894 for (i = 0; i < mcasp->num_serializer; i++)
895 context->xrsr_regs[i] = mcasp_get_reg(mcasp,
896 DAVINCI_MCASP_XRSRCTL_REG(i));
901 static int davinci_mcasp_resume(struct snd_soc_dai *dai)
903 struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
904 struct davinci_mcasp_context *context = &mcasp->context;
908 for (i = 0; i < ARRAY_SIZE(context_regs); i++)
909 mcasp_set_reg(mcasp, context_regs[i], context->config_regs[i]);
911 if (mcasp->txnumevt) {
912 reg = mcasp->fifo_base + MCASP_WFIFOCTL_OFFSET;
913 mcasp_set_reg(mcasp, reg, context->afifo_regs[0]);
915 if (mcasp->rxnumevt) {
916 reg = mcasp->fifo_base + MCASP_RFIFOCTL_OFFSET;
917 mcasp_set_reg(mcasp, reg, context->afifo_regs[1]);
920 for (i = 0; i < mcasp->num_serializer; i++)
921 mcasp_set_reg(mcasp, DAVINCI_MCASP_XRSRCTL_REG(i),
922 context->xrsr_regs[i]);
927 #define davinci_mcasp_suspend NULL
928 #define davinci_mcasp_resume NULL
931 #define DAVINCI_MCASP_RATES SNDRV_PCM_RATE_8000_192000
933 #define DAVINCI_MCASP_PCM_FMTS (SNDRV_PCM_FMTBIT_S8 | \
934 SNDRV_PCM_FMTBIT_U8 | \
935 SNDRV_PCM_FMTBIT_S16_LE | \
936 SNDRV_PCM_FMTBIT_U16_LE | \
937 SNDRV_PCM_FMTBIT_S24_LE | \
938 SNDRV_PCM_FMTBIT_U24_LE | \
939 SNDRV_PCM_FMTBIT_S24_3LE | \
940 SNDRV_PCM_FMTBIT_U24_3LE | \
941 SNDRV_PCM_FMTBIT_S32_LE | \
942 SNDRV_PCM_FMTBIT_U32_LE)
944 static struct snd_soc_dai_driver davinci_mcasp_dai[] = {
946 .name = "davinci-mcasp.0",
947 .probe = davinci_mcasp_dai_probe,
948 .suspend = davinci_mcasp_suspend,
949 .resume = davinci_mcasp_resume,
952 .channels_max = 32 * 16,
953 .rates = DAVINCI_MCASP_RATES,
954 .formats = DAVINCI_MCASP_PCM_FMTS,
958 .channels_max = 32 * 16,
959 .rates = DAVINCI_MCASP_RATES,
960 .formats = DAVINCI_MCASP_PCM_FMTS,
962 .ops = &davinci_mcasp_dai_ops,
966 .name = "davinci-mcasp.1",
967 .probe = davinci_mcasp_dai_probe,
971 .rates = DAVINCI_MCASP_RATES,
972 .formats = DAVINCI_MCASP_PCM_FMTS,
974 .ops = &davinci_mcasp_dai_ops,
979 static const struct snd_soc_component_driver davinci_mcasp_component = {
980 .name = "davinci-mcasp",
983 /* Some HW specific values and defaults. The rest is filled in from DT. */
984 static struct davinci_mcasp_pdata dm646x_mcasp_pdata = {
985 .tx_dma_offset = 0x400,
986 .rx_dma_offset = 0x400,
987 .asp_chan_q = EVENTQ_0,
988 .version = MCASP_VERSION_1,
991 static struct davinci_mcasp_pdata da830_mcasp_pdata = {
992 .tx_dma_offset = 0x2000,
993 .rx_dma_offset = 0x2000,
994 .asp_chan_q = EVENTQ_0,
995 .version = MCASP_VERSION_2,
998 static struct davinci_mcasp_pdata am33xx_mcasp_pdata = {
1001 .asp_chan_q = EVENTQ_0,
1002 .version = MCASP_VERSION_3,
1005 static struct davinci_mcasp_pdata dra7_mcasp_pdata = {
1006 .tx_dma_offset = 0x200,
1007 .rx_dma_offset = 0x284,
1008 .asp_chan_q = EVENTQ_0,
1009 .version = MCASP_VERSION_4,
1012 static const struct of_device_id mcasp_dt_ids[] = {
1014 .compatible = "ti,dm646x-mcasp-audio",
1015 .data = &dm646x_mcasp_pdata,
1018 .compatible = "ti,da830-mcasp-audio",
1019 .data = &da830_mcasp_pdata,
1022 .compatible = "ti,am33xx-mcasp-audio",
1023 .data = &am33xx_mcasp_pdata,
1026 .compatible = "ti,dra7-mcasp-audio",
1027 .data = &dra7_mcasp_pdata,
1031 MODULE_DEVICE_TABLE(of, mcasp_dt_ids);
1033 static int mcasp_reparent_fck(struct platform_device *pdev)
1035 struct device_node *node = pdev->dev.of_node;
1036 struct clk *gfclk, *parent_clk;
1037 const char *parent_name;
1043 parent_name = of_get_property(node, "fck_parent", NULL);
1047 gfclk = clk_get(&pdev->dev, "fck");
1048 if (IS_ERR(gfclk)) {
1049 dev_err(&pdev->dev, "failed to get fck\n");
1050 return PTR_ERR(gfclk);
1053 parent_clk = clk_get(NULL, parent_name);
1054 if (IS_ERR(parent_clk)) {
1055 dev_err(&pdev->dev, "failed to get parent clock\n");
1056 ret = PTR_ERR(parent_clk);
1060 ret = clk_set_parent(gfclk, parent_clk);
1062 dev_err(&pdev->dev, "failed to reparent fck\n");
1067 clk_put(parent_clk);
1073 static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of(
1074 struct platform_device *pdev)
1076 struct device_node *np = pdev->dev.of_node;
1077 struct davinci_mcasp_pdata *pdata = NULL;
1078 const struct of_device_id *match =
1079 of_match_device(mcasp_dt_ids, &pdev->dev);
1080 struct of_phandle_args dma_spec;
1082 const u32 *of_serial_dir32;
1086 if (pdev->dev.platform_data) {
1087 pdata = pdev->dev.platform_data;
1090 pdata = (struct davinci_mcasp_pdata*) match->data;
1092 /* control shouldn't reach here. something is wrong */
1097 ret = of_property_read_u32(np, "op-mode", &val);
1099 pdata->op_mode = val;
1101 ret = of_property_read_u32(np, "tdm-slots", &val);
1103 if (val < 2 || val > 32) {
1105 "tdm-slots must be in rage [2-32]\n");
1110 pdata->tdm_slots = val;
1113 of_serial_dir32 = of_get_property(np, "serial-dir", &val);
1115 if (of_serial_dir32) {
1116 u8 *of_serial_dir = devm_kzalloc(&pdev->dev,
1117 (sizeof(*of_serial_dir) * val),
1119 if (!of_serial_dir) {
1124 for (i = 0; i < val; i++)
1125 of_serial_dir[i] = be32_to_cpup(&of_serial_dir32[i]);
1127 pdata->num_serializer = val;
1128 pdata->serial_dir = of_serial_dir;
1131 ret = of_property_match_string(np, "dma-names", "tx");
1135 ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret,
1140 pdata->tx_dma_channel = dma_spec.args[0];
1142 ret = of_property_match_string(np, "dma-names", "rx");
1146 ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret,
1151 pdata->rx_dma_channel = dma_spec.args[0];
1153 ret = of_property_read_u32(np, "tx-num-evt", &val);
1155 pdata->txnumevt = val;
1157 ret = of_property_read_u32(np, "rx-num-evt", &val);
1159 pdata->rxnumevt = val;
1161 ret = of_property_read_u32(np, "sram-size-playback", &val);
1163 pdata->sram_size_playback = val;
1165 ret = of_property_read_u32(np, "sram-size-capture", &val);
1167 pdata->sram_size_capture = val;
1173 dev_err(&pdev->dev, "Error populating platform data, err %d\n",
1180 static int davinci_mcasp_probe(struct platform_device *pdev)
1182 struct davinci_pcm_dma_params *dma_params;
1183 struct snd_dmaengine_dai_dma_data *dma_data;
1184 struct resource *mem, *ioarea, *res, *dat;
1185 struct davinci_mcasp_pdata *pdata;
1186 struct davinci_mcasp *mcasp;
1189 if (!pdev->dev.platform_data && !pdev->dev.of_node) {
1190 dev_err(&pdev->dev, "No platform data supplied\n");
1194 mcasp = devm_kzalloc(&pdev->dev, sizeof(struct davinci_mcasp),
1199 pdata = davinci_mcasp_set_pdata_from_of(pdev);
1201 dev_err(&pdev->dev, "no platform data\n");
1205 mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
1207 dev_warn(mcasp->dev,
1208 "\"mpu\" mem resource not found, using index 0\n");
1209 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1211 dev_err(&pdev->dev, "no mem resource?\n");
1216 ioarea = devm_request_mem_region(&pdev->dev, mem->start,
1217 resource_size(mem), pdev->name);
1219 dev_err(&pdev->dev, "Audio region already claimed\n");
1223 pm_runtime_enable(&pdev->dev);
1225 ret = pm_runtime_get_sync(&pdev->dev);
1226 if (IS_ERR_VALUE(ret)) {
1227 dev_err(&pdev->dev, "pm_runtime_get_sync() failed\n");
1231 mcasp->base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
1233 dev_err(&pdev->dev, "ioremap failed\n");
1238 mcasp->op_mode = pdata->op_mode;
1239 mcasp->tdm_slots = pdata->tdm_slots;
1240 mcasp->num_serializer = pdata->num_serializer;
1241 #ifdef CONFIG_PM_SLEEP
1242 mcasp->context.xrsr_regs = devm_kzalloc(&pdev->dev,
1243 sizeof(u32) * mcasp->num_serializer,
1246 mcasp->serial_dir = pdata->serial_dir;
1247 mcasp->version = pdata->version;
1248 mcasp->txnumevt = pdata->txnumevt;
1249 mcasp->rxnumevt = pdata->rxnumevt;
1251 mcasp->dev = &pdev->dev;
1253 dat = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat");
1255 mcasp->dat_port = true;
1257 dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_PLAYBACK];
1258 dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK];
1259 dma_params->asp_chan_q = pdata->asp_chan_q;
1260 dma_params->ram_chan_q = pdata->ram_chan_q;
1261 dma_params->sram_pool = pdata->sram_pool;
1262 dma_params->sram_size = pdata->sram_size_playback;
1264 dma_params->dma_addr = dat->start;
1266 dma_params->dma_addr = mem->start + pdata->tx_dma_offset;
1268 /* Unconditional dmaengine stuff */
1269 dma_data->addr = dma_params->dma_addr;
1271 res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
1273 dma_params->channel = res->start;
1275 dma_params->channel = pdata->tx_dma_channel;
1277 /* dmaengine filter data for DT and non-DT boot */
1278 if (pdev->dev.of_node)
1279 dma_data->filter_data = "tx";
1281 dma_data->filter_data = &dma_params->channel;
1283 dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE];
1284 dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE];
1285 dma_params->asp_chan_q = pdata->asp_chan_q;
1286 dma_params->ram_chan_q = pdata->ram_chan_q;
1287 dma_params->sram_pool = pdata->sram_pool;
1288 dma_params->sram_size = pdata->sram_size_capture;
1290 dma_params->dma_addr = dat->start;
1292 dma_params->dma_addr = mem->start + pdata->rx_dma_offset;
1294 /* Unconditional dmaengine stuff */
1295 dma_data->addr = dma_params->dma_addr;
1297 if (mcasp->version < MCASP_VERSION_3) {
1298 mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE;
1299 /* dma_params->dma_addr is pointing to the data port address */
1300 mcasp->dat_port = true;
1302 mcasp->fifo_base = DAVINCI_MCASP_V3_AFIFO_BASE;
1305 res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
1307 dma_params->channel = res->start;
1309 dma_params->channel = pdata->rx_dma_channel;
1311 /* dmaengine filter data for DT and non-DT boot */
1312 if (pdev->dev.of_node)
1313 dma_data->filter_data = "rx";
1315 dma_data->filter_data = &dma_params->channel;
1317 dev_set_drvdata(&pdev->dev, mcasp);
1319 mcasp_reparent_fck(pdev);
1321 ret = devm_snd_soc_register_component(&pdev->dev,
1322 &davinci_mcasp_component,
1323 &davinci_mcasp_dai[pdata->op_mode], 1);
1328 switch (mcasp->version) {
1329 #if IS_BUILTIN(CONFIG_SND_DAVINCI_SOC) || \
1330 (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \
1331 IS_MODULE(CONFIG_SND_DAVINCI_SOC))
1332 case MCASP_VERSION_1:
1333 case MCASP_VERSION_2:
1334 ret = davinci_soc_platform_register(&pdev->dev);
1337 #if IS_BUILTIN(CONFIG_SND_EDMA_SOC) || \
1338 (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \
1339 IS_MODULE(CONFIG_SND_EDMA_SOC))
1340 case MCASP_VERSION_3:
1341 ret = edma_pcm_platform_register(&pdev->dev);
1344 #if IS_BUILTIN(CONFIG_SND_OMAP_SOC) || \
1345 (IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \
1346 IS_MODULE(CONFIG_SND_OMAP_SOC))
1347 case MCASP_VERSION_4:
1348 ret = omap_pcm_platform_register(&pdev->dev);
1352 dev_err(&pdev->dev, "Invalid McASP version: %d\n",
1359 dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
1366 pm_runtime_put_sync(&pdev->dev);
1367 pm_runtime_disable(&pdev->dev);
1371 static int davinci_mcasp_remove(struct platform_device *pdev)
1373 pm_runtime_put_sync(&pdev->dev);
1374 pm_runtime_disable(&pdev->dev);
1379 static struct platform_driver davinci_mcasp_driver = {
1380 .probe = davinci_mcasp_probe,
1381 .remove = davinci_mcasp_remove,
1383 .name = "davinci-mcasp",
1384 .owner = THIS_MODULE,
1385 .of_match_table = mcasp_dt_ids,
1389 module_platform_driver(davinci_mcasp_driver);
1391 MODULE_AUTHOR("Steve Chen");
1392 MODULE_DESCRIPTION("TI DAVINCI McASP SoC Interface");
1393 MODULE_LICENSE("GPL");