forked from Minki/linux
5a8f1d4701
Fix below compile error by add a missing ';'. CC sound/soc/nuc900/nuc900-ac97.o sound/soc/nuc900/nuc900-ac97.c:300: warning: initialization from incompatible pointer type sound/soc/nuc900/nuc900-ac97.c:301: warning: initialization from incompatible pointer type sound/soc/nuc900/nuc900-ac97.c:318: error: expected ',' or ';' before 'static' sound/soc/nuc900/nuc900-ac97.c:405: error: 'nuc900_ac97_drvprobe' undeclared here (not in a function) make[3]: *** [sound/soc/nuc900/nuc900-ac97.o] Error 1 make[2]: *** [sound/soc/nuc900] Error 2 make[1]: *** [sound/soc] Error 2 make: *** [sound] Error 2 Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
426 lines
10 KiB
C
426 lines
10 KiB
C
/*
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* Copyright (c) 2009-2010 Nuvoton technology corporation.
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*
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* Wan ZongShun <mcuos.com@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation;version 2 of the License.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/suspend.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <linux/clk.h>
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#include <mach/mfp.h>
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#include "nuc900-audio.h"
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static DEFINE_MUTEX(ac97_mutex);
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struct nuc900_audio *nuc900_ac97_data;
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static int nuc900_checkready(void)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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if (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS0) & CODEC_READY))
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return -EPERM;
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return 0;
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}
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/* AC97 controller reads codec register */
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static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97,
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unsigned short reg)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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unsigned long timeout = 0x10000, val;
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mutex_lock(&ac97_mutex);
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val = nuc900_checkready();
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if (!!val) {
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dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
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goto out;
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}
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/* set the R_WB bit and write register index */
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, R_WB | reg);
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/* set the valid frame bit and valid slots */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
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val |= (VALID_FRAME | SLOT1_VALID);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
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udelay(100);
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/* polling the AC_R_FINISH */
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while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH)
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&& timeout--)
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mdelay(1);
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if (!timeout) {
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dev_err(nuc900_audio->dev, "AC97 read register time out !\n");
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val = -EPERM;
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goto out;
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}
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0) ;
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val &= ~SLOT1_VALID;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
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if (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS1) >> 2 != reg) {
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dev_err(nuc900_audio->dev,
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"R_INDEX of REG_ACTL_ACIS1 not match!\n");
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}
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udelay(100);
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val = (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS2) & 0xFFFF);
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out:
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mutex_unlock(&ac97_mutex);
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return val;
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}
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/* AC97 controller writes to codec register */
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static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
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unsigned short val)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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unsigned long tmp, timeout = 0x10000;
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mutex_lock(&ac97_mutex);
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tmp = nuc900_checkready();
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if (!!tmp)
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dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
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/* clear the R_WB bit and write register index */
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, reg);
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/* write register value */
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS2, val);
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/* set the valid frame bit and valid slots */
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
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tmp |= SLOT1_VALID | SLOT2_VALID | VALID_FRAME;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
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udelay(100);
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/* polling the AC_W_FINISH */
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while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH)
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&& timeout--)
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mdelay(1);
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if (!timeout)
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dev_err(nuc900_audio->dev, "AC97 write register time out !\n");
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
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tmp &= ~(SLOT1_VALID | SLOT2_VALID);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
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mutex_unlock(&ac97_mutex);
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}
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static void nuc900_ac97_warm_reset(struct snd_ac97 *ac97)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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unsigned long val;
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mutex_lock(&ac97_mutex);
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/* warm reset AC 97 */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
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val |= AC_W_RES;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
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udelay(100);
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val = nuc900_checkready();
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if (!!val)
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dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
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mutex_unlock(&ac97_mutex);
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}
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static void nuc900_ac97_cold_reset(struct snd_ac97 *ac97)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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unsigned long val;
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mutex_lock(&ac97_mutex);
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/* reset Audio Controller */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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val |= ACTL_RESET_BIT;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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val &= (~ACTL_RESET_BIT);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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/* reset AC-link interface */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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val |= AC_RESET;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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val &= ~AC_RESET;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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/* cold reset AC 97 */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
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val |= AC_C_RES;
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
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val &= (~AC_C_RES);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
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udelay(100);
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mutex_unlock(&ac97_mutex);
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}
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/* AC97 controller operations */
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struct snd_ac97_bus_ops soc_ac97_ops = {
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.read = nuc900_ac97_read,
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.write = nuc900_ac97_write,
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.reset = nuc900_ac97_cold_reset,
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.warm_reset = nuc900_ac97_warm_reset,
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}
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EXPORT_SYMBOL_GPL(soc_ac97_ops);
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static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
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int cmd, struct snd_soc_dai *dai)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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int ret;
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unsigned long val, tmp;
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ret = 0;
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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case SNDRV_PCM_TRIGGER_RESUME:
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
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tmp |= (SLOT3_VALID | SLOT4_VALID | VALID_FRAME);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_PSR);
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tmp |= (P_DMA_END_IRQ | P_DMA_MIDDLE_IRQ);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, tmp);
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val |= AC_PLAY;
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} else {
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_RSR);
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tmp |= (R_DMA_END_IRQ | R_DMA_MIDDLE_IRQ);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, tmp);
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val |= AC_RECORD;
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}
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
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tmp &= ~(SLOT3_VALID | SLOT4_VALID);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, RESET_PRSR);
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val &= ~AC_PLAY;
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} else {
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, RESET_PRSR);
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val &= ~AC_RECORD;
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}
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
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break;
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default:
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ret = -EINVAL;
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}
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return ret;
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}
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static int nuc900_ac97_probe(struct platform_device *pdev,
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struct snd_soc_dai *dai)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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unsigned long val;
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mutex_lock(&ac97_mutex);
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/* enable unit clock */
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clk_enable(nuc900_audio->clk);
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/* enable audio controller and AC-link interface */
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val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
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val |= (IIS_AC_PIN_SEL | ACLINK_EN);
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AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val);
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mutex_unlock(&ac97_mutex);
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return 0;
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}
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static void nuc900_ac97_remove(struct platform_device *pdev,
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struct snd_soc_dai *dai)
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{
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struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
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clk_disable(nuc900_audio->clk);
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}
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static struct snd_soc_dai_ops nuc900_ac97_dai_ops = {
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.trigger = nuc900_ac97_trigger,
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};
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static struct snd_soc_dai_driver nuc900_ac97_dai = {
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.probe = nuc900_ac97_probe,
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.remove = nuc900_ac97_remove,
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.ac97_control = 1,
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.playback = {
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.channels_min = 1,
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.channels_max = 2,
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},
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.capture = {
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.rates = SNDRV_PCM_RATE_8000_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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.channels_min = 1,
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.channels_max = 2,
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},
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.ops = &nuc900_ac97_dai_ops,
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};
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static int __devinit nuc900_ac97_drvprobe(struct platform_device *pdev)
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{
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struct nuc900_audio *nuc900_audio;
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int ret;
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if (nuc900_ac97_data)
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return -EBUSY;
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nuc900_audio = kzalloc(sizeof(struct nuc900_audio), GFP_KERNEL);
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if (!nuc900_audio)
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return -ENOMEM;
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spin_lock_init(&nuc900_audio->lock);
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nuc900_audio->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!nuc900_audio->res) {
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ret = -ENODEV;
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goto out0;
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}
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if (!request_mem_region(nuc900_audio->res->start,
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resource_size(nuc900_audio->res), pdev->name)) {
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ret = -EBUSY;
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goto out0;
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}
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nuc900_audio->mmio = ioremap(nuc900_audio->res->start,
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resource_size(nuc900_audio->res));
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if (!nuc900_audio->mmio) {
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ret = -ENOMEM;
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goto out1;
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}
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nuc900_audio->clk = clk_get(&pdev->dev, NULL);
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if (IS_ERR(nuc900_audio->clk)) {
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ret = PTR_ERR(nuc900_audio->clk);
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goto out2;
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}
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nuc900_audio->irq_num = platform_get_irq(pdev, 0);
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if (!nuc900_audio->irq_num) {
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ret = -EBUSY;
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goto out2;
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}
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nuc900_ac97_data = nuc900_audio;
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ret = snd_soc_register_dai(&pdev->dev, &nuc900_ac97_dai);
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if (ret)
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goto out3;
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mfp_set_groupg(nuc900_audio->dev); /* enbale ac97 multifunction pin*/
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return 0;
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out3:
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clk_put(nuc900_audio->clk);
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out2:
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iounmap(nuc900_audio->mmio);
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out1:
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release_mem_region(nuc900_audio->res->start,
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resource_size(nuc900_audio->res));
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out0:
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kfree(nuc900_audio);
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return ret;
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}
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static int __devexit nuc900_ac97_drvremove(struct platform_device *pdev)
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{
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snd_soc_unregister_dai(&pdev->dev);
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clk_put(nuc900_ac97_data->clk);
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iounmap(nuc900_ac97_data->mmio);
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release_mem_region(nuc900_ac97_data->res->start,
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resource_size(nuc900_ac97_data->res));
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kfree(nuc900_ac97_data);
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nuc900_ac97_data = NULL;
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return 0;
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}
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static struct platform_driver nuc900_ac97_driver = {
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.driver = {
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.name = "nuc900-ac97",
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.owner = THIS_MODULE,
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},
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.probe = nuc900_ac97_drvprobe,
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.remove = __devexit_p(nuc900_ac97_drvremove),
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};
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static int __init nuc900_ac97_init(void)
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{
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return platform_driver_register(&nuc900_ac97_driver);
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}
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static void __exit nuc900_ac97_exit(void)
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{
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platform_driver_unregister(&nuc900_ac97_driver);
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}
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module_init(nuc900_ac97_init);
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module_exit(nuc900_ac97_exit);
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MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
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MODULE_DESCRIPTION("NUC900 AC97 SoC driver!");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:nuc900-ac97");
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