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-rw-r--r--sound/soc/nuc900/nuc900-ac97.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
deleted file mode 100644
index 5f2e5c069377..000000000000
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ /dev/null
@@ -1,391 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2009-2010 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/suspend.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/initval.h>
-#include <sound/soc.h>
-#include <linux/clk.h>
-
-#include <mach/mfp.h>
-
-#include "nuc900-audio.h"
-
-static DEFINE_MUTEX(ac97_mutex);
-struct nuc900_audio *nuc900_ac97_data;
-EXPORT_SYMBOL_GPL(nuc900_ac97_data);
-
-static int nuc900_checkready(void)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
-
- if (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS0) & CODEC_READY))
- return -EPERM;
-
- return 0;
-}
-
-/* AC97 controller reads codec register */
-static unsigned short nuc900_ac97_read(struct snd_ac97 *ac97,
- unsigned short reg)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- unsigned long timeout = 0x10000, val;
-
- mutex_lock(&ac97_mutex);
-
- val = nuc900_checkready();
- if (val) {
- dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
- goto out;
- }
-
- /* set the R_WB bit and write register index */
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, R_WB | reg);
-
- /* set the valid frame bit and valid slots */
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
- val |= (VALID_FRAME | SLOT1_VALID);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
-
- udelay(100);
-
- /* polling the AC_R_FINISH */
- while (!(AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_R_FINISH)
- && --timeout)
- mdelay(1);
-
- if (!timeout) {
- dev_err(nuc900_audio->dev, "AC97 read register time out !\n");
- val = -EPERM;
- goto out;
- }
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0) ;
- val &= ~SLOT1_VALID;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, val);
-
- if (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS1) >> 2 != reg) {
- dev_err(nuc900_audio->dev,
- "R_INDEX of REG_ACTL_ACIS1 not match!\n");
- }
-
- udelay(100);
- val = (AUDIO_READ(nuc900_audio->mmio + ACTL_ACIS2) & 0xFFFF);
-
-out:
- mutex_unlock(&ac97_mutex);
- return val;
-}
-
-/* AC97 controller writes to codec register */
-static void nuc900_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
- unsigned short val)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- unsigned long tmp, timeout = 0x10000;
-
- mutex_lock(&ac97_mutex);
-
- tmp = nuc900_checkready();
- if (tmp)
- dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
-
- /* clear the R_WB bit and write register index */
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS1, reg);
-
- /* write register value */
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS2, val);
-
- /* set the valid frame bit and valid slots */
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
- tmp |= SLOT1_VALID | SLOT2_VALID | VALID_FRAME;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
-
- udelay(100);
-
- /* polling the AC_W_FINISH */
- while ((AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON) & AC_W_FINISH)
- && --timeout)
- mdelay(1);
-
- if (!timeout)
- dev_err(nuc900_audio->dev, "AC97 write register time out !\n");
-
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
- tmp &= ~(SLOT1_VALID | SLOT2_VALID);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
-
- mutex_unlock(&ac97_mutex);
-
-}
-
-static void nuc900_ac97_warm_reset(struct snd_ac97 *ac97)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- unsigned long val;
-
- mutex_lock(&ac97_mutex);
-
- /* warm reset AC 97 */
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
- val |= AC_W_RES;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
-
- udelay(100);
-
- val = nuc900_checkready();
- if (val)
- dev_err(nuc900_audio->dev, "AC97 codec is not ready\n");
-
- mutex_unlock(&ac97_mutex);
-}
-
-static void nuc900_ac97_cold_reset(struct snd_ac97 *ac97)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- unsigned long val;
-
- mutex_lock(&ac97_mutex);
-
- /* reset Audio Controller */
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- val |= ACTL_RESET_BIT;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- val &= (~ACTL_RESET_BIT);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- /* reset AC-link interface */
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- val |= AC_RESET;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- val &= ~AC_RESET;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- /* cold reset AC 97 */
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
- val |= AC_C_RES;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_ACCON);
- val &= (~AC_C_RES);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACCON, val);
-
- udelay(100);
-
- mutex_unlock(&ac97_mutex);
-
-}
-
-/* AC97 controller operations */
-static struct snd_ac97_bus_ops nuc900_ac97_ops = {
- .read = nuc900_ac97_read,
- .write = nuc900_ac97_write,
- .reset = nuc900_ac97_cold_reset,
- .warm_reset = nuc900_ac97_warm_reset,
-};
-
-static int nuc900_ac97_trigger(struct snd_pcm_substream *substream,
- int cmd, struct snd_soc_dai *dai)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- int ret;
- unsigned long val, tmp;
-
- ret = 0;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
- tmp |= (SLOT3_VALID | SLOT4_VALID | VALID_FRAME);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
-
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_PSR);
- tmp |= (P_DMA_END_IRQ | P_DMA_MIDDLE_IRQ);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, tmp);
- val |= AC_PLAY;
- } else {
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_RSR);
- tmp |= (R_DMA_END_IRQ | R_DMA_MIDDLE_IRQ);
-
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, tmp);
- val |= AC_RECORD;
- }
-
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- break;
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- tmp = AUDIO_READ(nuc900_audio->mmio + ACTL_ACOS0);
- tmp &= ~(SLOT3_VALID | SLOT4_VALID);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_ACOS0, tmp);
-
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, RESET_PRSR);
- val &= ~AC_PLAY;
- } else {
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, RESET_PRSR);
- val &= ~AC_RECORD;
- }
-
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
-
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static int nuc900_ac97_probe(struct snd_soc_dai *dai)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
- unsigned long val;
-
- mutex_lock(&ac97_mutex);
-
- /* enable unit clock */
- clk_enable(nuc900_audio->clk);
-
- /* enable audio controller and AC-link interface */
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
- val |= (IIS_AC_PIN_SEL | ACLINK_EN);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val);
-
- mutex_unlock(&ac97_mutex);
-
- return 0;
-}
-
-static int nuc900_ac97_remove(struct snd_soc_dai *dai)
-{
- struct nuc900_audio *nuc900_audio = nuc900_ac97_data;
-
- clk_disable(nuc900_audio->clk);
- return 0;
-}
-
-static const struct snd_soc_dai_ops nuc900_ac97_dai_ops = {
- .trigger = nuc900_ac97_trigger,
-};
-
-static struct snd_soc_dai_driver nuc900_ac97_dai = {
- .probe = nuc900_ac97_probe,
- .remove = nuc900_ac97_remove,
- .bus_control = true,
- .playback = {
- .rates = SNDRV_PCM_RATE_8000_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- .channels_min = 1,
- .channels_max = 2,
- },
- .capture = {
- .rates = SNDRV_PCM_RATE_8000_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- .channels_min = 1,
- .channels_max = 2,
- },
- .ops = &nuc900_ac97_dai_ops,
-};
-
-static const struct snd_soc_component_driver nuc900_ac97_component = {
- .name = "nuc900-ac97",
-};
-
-static int nuc900_ac97_drvprobe(struct platform_device *pdev)
-{
- struct nuc900_audio *nuc900_audio;
- int ret;
-
- if (nuc900_ac97_data)
- return -EBUSY;
-
- nuc900_audio = devm_kzalloc(&pdev->dev, sizeof(struct nuc900_audio),
- GFP_KERNEL);
- if (!nuc900_audio)
- return -ENOMEM;
-
- spin_lock_init(&nuc900_audio->lock);
-
- nuc900_audio->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- nuc900_audio->mmio = devm_ioremap_resource(&pdev->dev,
- nuc900_audio->res);
- if (IS_ERR(nuc900_audio->mmio))
- return PTR_ERR(nuc900_audio->mmio);
-
- nuc900_audio->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(nuc900_audio->clk)) {
- ret = PTR_ERR(nuc900_audio->clk);
- goto out;
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret < 0)
- goto out;
- nuc900_audio->irq_num = ret;
-
- nuc900_ac97_data = nuc900_audio;
-
- ret = snd_soc_set_ac97_ops(&nuc900_ac97_ops);
- if (ret)
- goto out;
-
- ret = devm_snd_soc_register_component(&pdev->dev, &nuc900_ac97_component,
- &nuc900_ac97_dai, 1);
- if (ret)
- goto out;
-
- /* enbale ac97 multifunction pin */
- mfp_set_groupg(nuc900_audio->dev, NULL);
-
- return 0;
-
-out:
- snd_soc_set_ac97_ops(NULL);
- return ret;
-}
-
-static int nuc900_ac97_drvremove(struct platform_device *pdev)
-{
- nuc900_ac97_data = NULL;
- snd_soc_set_ac97_ops(NULL);
-
- return 0;
-}
-
-static struct platform_driver nuc900_ac97_driver = {
- .driver = {
- .name = "nuc900-ac97",
- },
- .probe = nuc900_ac97_drvprobe,
- .remove = nuc900_ac97_drvremove,
-};
-
-module_platform_driver(nuc900_ac97_driver);
-
-MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
-MODULE_DESCRIPTION("NUC900 AC97 SoC driver!");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:nuc900-ac97");