source "sound/soc/fsl/Kconfig"
source "sound/soc/hisilicon/Kconfig"
source "sound/soc/jz4740/Kconfig"
-source "sound/soc/nuc900/Kconfig"
source "sound/soc/kirkwood/Kconfig"
source "sound/soc/img/Kconfig"
source "sound/soc/intel/Kconfig"
obj-$(CONFIG_SND_SOC) += mediatek/
obj-$(CONFIG_SND_SOC) += meson/
obj-$(CONFIG_SND_SOC) += mxs/
-obj-$(CONFIG_SND_SOC) += nuc900/
obj-$(CONFIG_SND_SOC) += kirkwood/
obj-$(CONFIG_SND_SOC) += pxa/
obj-$(CONFIG_SND_SOC) += qcom/
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0-only
-##
-## NUC900 series AC97 API
-##
-config SND_SOC_NUC900
- tristate "SoC Audio for NUC900 series"
- depends on ARCH_W90X900
- select SND_SOC_NUC900_AC97
- help
- This option enables support for AC97 mode on the NUC900 SoC.
-
-config SND_SOC_NUC900_AC97
- tristate
- select AC97_BUS
- select SND_AC97_CODEC
- select SND_SOC_AC97_BUS
-
-
-##
-## Boards
-##
-config SND_SOC_NUC900EVB
- tristate "NUC900 AC97 support for demo board"
- depends on SND_SOC_NUC900
- select SND_SOC_NUC900_AC97
- select SND_SOC_AC97_CODEC
- help
- Select this option to enable audio (AC97) on the
- NUC900 demoboard.
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-# NUC900 series audio
-snd-soc-nuc900-pcm-objs := nuc900-pcm.o
-snd-soc-nuc900-ac97-objs := nuc900-ac97.o
-
-obj-$(CONFIG_SND_SOC_NUC900) += snd-soc-nuc900-pcm.o
-obj-$(CONFIG_SND_SOC_NUC900_AC97) += snd-soc-nuc900-ac97.o
-
-# Boards
-snd-soc-nuc900-audio-objs := nuc900-audio.o
-
-obj-$(CONFIG_SND_SOC_NUC900EVB) += snd-soc-nuc900-audio.o
+++ /dev/null
-// 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");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2010 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/timer.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/soc.h>
-
-#include "nuc900-audio.h"
-
-SND_SOC_DAILINK_DEFS(ac97,
- DAILINK_COMP_ARRAY(COMP_CPU("nuc900-ac97")),
- DAILINK_COMP_ARRAY(COMP_CODEC("ac97-codec", "ac97-hifi")),
- DAILINK_COMP_ARRAY(COMP_PLATFORM("nuc900-pcm-audio")));
-
-static struct snd_soc_dai_link nuc900evb_ac97_dai = {
- .name = "AC97",
- .stream_name = "AC97 HiFi",
- SND_SOC_DAILINK_REG(ac97),
-};
-
-static struct snd_soc_card nuc900evb_audio_machine = {
- .name = "NUC900EVB_AC97",
- .owner = THIS_MODULE,
- .dai_link = &nuc900evb_ac97_dai,
- .num_links = 1,
-};
-
-static struct platform_device *nuc900evb_asoc_dev;
-
-static int __init nuc900evb_audio_init(void)
-{
- int ret;
-
- ret = -ENOMEM;
- nuc900evb_asoc_dev = platform_device_alloc("soc-audio", -1);
- if (!nuc900evb_asoc_dev)
- goto out;
-
- /* nuc900 board audio device */
- platform_set_drvdata(nuc900evb_asoc_dev, &nuc900evb_audio_machine);
-
- ret = platform_device_add(nuc900evb_asoc_dev);
-
- if (ret) {
- platform_device_put(nuc900evb_asoc_dev);
- nuc900evb_asoc_dev = NULL;
- }
-
-out:
- return ret;
-}
-
-static void __exit nuc900evb_audio_exit(void)
-{
- platform_device_unregister(nuc900evb_asoc_dev);
-}
-
-module_init(nuc900evb_audio_init);
-module_exit(nuc900evb_audio_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("NUC900 Series ASoC audio support");
-MODULE_AUTHOR("Wan ZongShun");
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (c) 2010 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#ifndef _NUC900_AUDIO_H
-#define _NUC900_AUDIO_H
-
-#include <linux/io.h>
-
-/* Audio Control Registers */
-#define ACTL_CON 0x00
-#define ACTL_RESET 0x04
-#define ACTL_RDSTB 0x08
-#define ACTL_RDST_LENGTH 0x0C
-#define ACTL_RDSTC 0x10
-#define ACTL_RSR 0x14
-#define ACTL_PDSTB 0x18
-#define ACTL_PDST_LENGTH 0x1C
-#define ACTL_PDSTC 0x20
-#define ACTL_PSR 0x24
-#define ACTL_IISCON 0x28
-#define ACTL_ACCON 0x2C
-#define ACTL_ACOS0 0x30
-#define ACTL_ACOS1 0x34
-#define ACTL_ACOS2 0x38
-#define ACTL_ACIS0 0x3C
-#define ACTL_ACIS1 0x40
-#define ACTL_ACIS2 0x44
-#define ACTL_COUNTER 0x48
-
-/* bit definition of REG_ACTL_CON register */
-#define R_DMA_IRQ 0x1000
-#define T_DMA_IRQ 0x0800
-#define IIS_AC_PIN_SEL 0x0100
-#define FIFO_TH 0x0080
-#define ADC_EN 0x0010
-#define M80_EN 0x0008
-#define ACLINK_EN 0x0004
-#define IIS_EN 0x0002
-
-/* bit definition of REG_ACTL_RESET register */
-#define W5691_PLAY 0x20000
-#define ACTL_RESET_BIT 0x10000
-#define RECORD_RIGHT_CHNNEL 0x08000
-#define RECORD_LEFT_CHNNEL 0x04000
-#define PLAY_RIGHT_CHNNEL 0x02000
-#define PLAY_LEFT_CHNNEL 0x01000
-#define DAC_PLAY 0x00800
-#define ADC_RECORD 0x00400
-#define M80_PLAY 0x00200
-#define AC_RECORD 0x00100
-#define AC_PLAY 0x00080
-#define IIS_RECORD 0x00040
-#define IIS_PLAY 0x00020
-#define DAC_RESET 0x00010
-#define ADC_RESET 0x00008
-#define M80_RESET 0x00004
-#define AC_RESET 0x00002
-#define IIS_RESET 0x00001
-
-/* bit definition of REG_ACTL_ACCON register */
-#define AC_BCLK_PU_EN 0x20
-#define AC_R_FINISH 0x10
-#define AC_W_FINISH 0x08
-#define AC_W_RES 0x04
-#define AC_C_RES 0x02
-
-/* bit definition of ACTL_RSR register */
-#define R_FIFO_EMPTY 0x04
-#define R_DMA_END_IRQ 0x02
-#define R_DMA_MIDDLE_IRQ 0x01
-
-/* bit definition of ACTL_PSR register */
-#define P_FIFO_EMPTY 0x04
-#define P_DMA_END_IRQ 0x02
-#define P_DMA_MIDDLE_IRQ 0x01
-
-/* bit definition of ACTL_ACOS0 register */
-#define SLOT1_VALID 0x01
-#define SLOT2_VALID 0x02
-#define SLOT3_VALID 0x04
-#define SLOT4_VALID 0x08
-#define VALID_FRAME 0x10
-
-/* bit definition of ACTL_ACOS1 register */
-#define R_WB 0x80
-
-#define CODEC_READY 0x10
-#define RESET_PRSR 0x00
-#define AUDIO_WRITE(addr, val) __raw_writel(val, addr)
-#define AUDIO_READ(addr) __raw_readl(addr)
-
-struct nuc900_audio {
- void __iomem *mmio;
- spinlock_t lock;
- unsigned long irq_num;
- struct resource *res;
- struct clk *clk;
- struct device *dev;
-
-};
-
-extern struct nuc900_audio *nuc900_ac97_data;
-
-#endif /*end _NUC900_AUDIO_H */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2010 Nuvoton technology corporation.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/dma-mapping.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-
-#include <mach/hardware.h>
-
-#include "nuc900-audio.h"
-
-static const struct snd_pcm_hardware nuc900_pcm_hardware = {
- .info = SNDRV_PCM_INFO_INTERLEAVED |
- SNDRV_PCM_INFO_BLOCK_TRANSFER |
- SNDRV_PCM_INFO_MMAP |
- SNDRV_PCM_INFO_MMAP_VALID |
- SNDRV_PCM_INFO_PAUSE |
- SNDRV_PCM_INFO_RESUME,
- .buffer_bytes_max = 4*1024,
- .period_bytes_min = 1*1024,
- .period_bytes_max = 4*1024,
- .periods_min = 1,
- .periods_max = 1024,
-};
-
-static int nuc900_dma_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-}
-
-static void nuc900_update_dma_register(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
- void __iomem *mmio_addr, *mmio_len;
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- mmio_addr = nuc900_audio->mmio + ACTL_PDSTB;
- mmio_len = nuc900_audio->mmio + ACTL_PDST_LENGTH;
- } else {
- mmio_addr = nuc900_audio->mmio + ACTL_RDSTB;
- mmio_len = nuc900_audio->mmio + ACTL_RDST_LENGTH;
- }
-
- AUDIO_WRITE(mmio_addr, runtime->dma_addr);
- AUDIO_WRITE(mmio_len, runtime->dma_bytes);
-}
-
-static void nuc900_dma_start(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
- unsigned long val;
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
- val |= (T_DMA_IRQ | R_DMA_IRQ);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val);
-}
-
-static void nuc900_dma_stop(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
- unsigned long val;
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
- val &= ~(T_DMA_IRQ | R_DMA_IRQ);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val);
-}
-
-static irqreturn_t nuc900_dma_interrupt(int irq, void *dev_id)
-{
- struct snd_pcm_substream *substream = dev_id;
- struct nuc900_audio *nuc900_audio = substream->runtime->private_data;
- unsigned long val;
-
- spin_lock(&nuc900_audio->lock);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_CON);
-
- if (val & R_DMA_IRQ) {
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val | R_DMA_IRQ);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RSR);
-
- if (val & R_DMA_MIDDLE_IRQ) {
- val |= R_DMA_MIDDLE_IRQ;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, val);
- }
-
- if (val & R_DMA_END_IRQ) {
- val |= R_DMA_END_IRQ;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RSR, val);
- }
- } else if (val & T_DMA_IRQ) {
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_CON, val | T_DMA_IRQ);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_PSR);
-
- if (val & P_DMA_MIDDLE_IRQ) {
- val |= P_DMA_MIDDLE_IRQ;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, val);
- }
-
- if (val & P_DMA_END_IRQ) {
- val |= P_DMA_END_IRQ;
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_PSR, val);
- }
- } else {
- dev_err(nuc900_audio->dev, "Wrong DMA interrupt status!\n");
- spin_unlock(&nuc900_audio->lock);
- return IRQ_HANDLED;
- }
-
- spin_unlock(&nuc900_audio->lock);
-
- snd_pcm_period_elapsed(substream);
-
- return IRQ_HANDLED;
-}
-
-static int nuc900_dma_hw_free(struct snd_pcm_substream *substream)
-{
- snd_pcm_lib_free_pages(substream);
- return 0;
-}
-
-static int nuc900_dma_prepare(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
- unsigned long flags, val;
- int ret = 0;
-
- spin_lock_irqsave(&nuc900_audio->lock, flags);
-
- nuc900_update_dma_register(substream);
-
- val = AUDIO_READ(nuc900_audio->mmio + ACTL_RESET);
-
- switch (runtime->channels) {
- case 1:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- val &= ~(PLAY_LEFT_CHNNEL | PLAY_RIGHT_CHNNEL);
- val |= PLAY_RIGHT_CHNNEL;
- } else {
- val &= ~(RECORD_LEFT_CHNNEL | RECORD_RIGHT_CHNNEL);
- val |= RECORD_RIGHT_CHNNEL;
- }
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
- break;
- case 2:
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- val |= (PLAY_LEFT_CHNNEL | PLAY_RIGHT_CHNNEL);
- else
- val |= (RECORD_LEFT_CHNNEL | RECORD_RIGHT_CHNNEL);
- AUDIO_WRITE(nuc900_audio->mmio + ACTL_RESET, val);
- break;
- default:
- ret = -EINVAL;
- }
- spin_unlock_irqrestore(&nuc900_audio->lock, flags);
- return ret;
-}
-
-static int nuc900_dma_trigger(struct snd_pcm_substream *substream, int cmd)
-{
- int ret = 0;
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- case SNDRV_PCM_TRIGGER_RESUME:
- nuc900_dma_start(substream);
- break;
-
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- nuc900_dma_stop(substream);
- break;
-
- default:
- ret = -EINVAL;
- break;
- }
-
- return ret;
-}
-
-static int nuc900_dma_getposition(struct snd_pcm_substream *substream,
- dma_addr_t *src, dma_addr_t *dst)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
-
- if (src != NULL)
- *src = AUDIO_READ(nuc900_audio->mmio + ACTL_PDSTC);
-
- if (dst != NULL)
- *dst = AUDIO_READ(nuc900_audio->mmio + ACTL_RDSTC);
-
- return 0;
-}
-
-static snd_pcm_uframes_t nuc900_dma_pointer(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- dma_addr_t src, dst;
- unsigned long res;
-
- nuc900_dma_getposition(substream, &src, &dst);
-
- if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
- res = dst - runtime->dma_addr;
- else
- res = src - runtime->dma_addr;
-
- return bytes_to_frames(substream->runtime, res);
-}
-
-static int nuc900_dma_open(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio;
-
- snd_soc_set_runtime_hwparams(substream, &nuc900_pcm_hardware);
-
- nuc900_audio = nuc900_ac97_data;
-
- if (request_irq(nuc900_audio->irq_num, nuc900_dma_interrupt,
- 0, "nuc900-dma", substream))
- return -EBUSY;
-
- runtime->private_data = nuc900_audio;
-
- return 0;
-}
-
-static int nuc900_dma_close(struct snd_pcm_substream *substream)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct nuc900_audio *nuc900_audio = runtime->private_data;
-
- free_irq(nuc900_audio->irq_num, substream);
-
- return 0;
-}
-
-static int nuc900_dma_mmap(struct snd_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
-
- return dma_mmap_wc(substream->pcm->card->dev, vma, runtime->dma_area,
- runtime->dma_addr, runtime->dma_bytes);
-}
-
-static const struct snd_pcm_ops nuc900_dma_ops = {
- .open = nuc900_dma_open,
- .close = nuc900_dma_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = nuc900_dma_hw_params,
- .hw_free = nuc900_dma_hw_free,
- .prepare = nuc900_dma_prepare,
- .trigger = nuc900_dma_trigger,
- .pointer = nuc900_dma_pointer,
- .mmap = nuc900_dma_mmap,
-};
-
-static int nuc900_dma_new(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_card *card = rtd->card->snd_card;
- struct snd_pcm *pcm = rtd->pcm;
- int ret;
-
- ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
- if (ret)
- return ret;
-
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
- card->dev, 4 * 1024, (4 * 1024) - 1);
-
- return 0;
-}
-
-static const struct snd_soc_component_driver nuc900_soc_component = {
- .ops = &nuc900_dma_ops,
- .pcm_new = nuc900_dma_new,
-};
-
-static int nuc900_soc_platform_probe(struct platform_device *pdev)
-{
- return devm_snd_soc_register_component(&pdev->dev, &nuc900_soc_component,
- NULL, 0);
-}
-
-static struct platform_driver nuc900_pcm_driver = {
- .driver = {
- .name = "nuc900-pcm-audio",
- },
-
- .probe = nuc900_soc_platform_probe,
-};
-
-module_platform_driver(nuc900_pcm_driver);
-
-MODULE_AUTHOR("Wan ZongShun, <mcuos.com@gmail.com>");
-MODULE_DESCRIPTION("nuc900 Audio DMA module");
-MODULE_LICENSE("GPL");
OSDN Git Service
