diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/nuc900')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/Kconfig | 27 | ||||
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/Makefile | 11 | ||||
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/nuc900-ac97.c | 414 | ||||
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.c | 75 | ||||
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.h | 115 | ||||
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/nuc900/nuc900-pcm.c | 365 |
6 files changed, 0 insertions, 1007 deletions
diff --git a/ANDROID_3.4.5/sound/soc/nuc900/Kconfig b/ANDROID_3.4.5/sound/soc/nuc900/Kconfig deleted file mode 100644 index a0ed1c61..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/Kconfig +++ /dev/null @@ -1,27 +0,0 @@ -## -## NUC900 series AC97 API -## -config SND_SOC_NUC900 - tristate "SoC Audio for NUC900 series" - depends on ARCH_W90X900 - 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. diff --git a/ANDROID_3.4.5/sound/soc/nuc900/Makefile b/ANDROID_3.4.5/sound/soc/nuc900/Makefile deleted file mode 100644 index 7e46c715..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/Makefile +++ /dev/null @@ -1,11 +0,0 @@ -# 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 diff --git a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-ac97.c b/ANDROID_3.4.5/sound/soc/nuc900/nuc900-ac97.c deleted file mode 100644 index 946020a6..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-ac97.c +++ /dev/null @@ -1,414 +0,0 @@ -/* - * Copyright (c) 2009-2010 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation;version 2 of the License. - * - */ - -#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; - -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 */ -struct snd_ac97_bus_ops soc_ac97_ops = { - .read = nuc900_ac97_read, - .write = nuc900_ac97_write, - .reset = nuc900_ac97_cold_reset, - .warm_reset = nuc900_ac97_warm_reset, -} -EXPORT_SYMBOL_GPL(soc_ac97_ops); - -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, - .ac97_control = 1, - .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 int __devinit nuc900_ac97_drvprobe(struct platform_device *pdev) -{ - struct nuc900_audio *nuc900_audio; - int ret; - - if (nuc900_ac97_data) - return -EBUSY; - - nuc900_audio = kzalloc(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); - if (!nuc900_audio->res) { - ret = -ENODEV; - goto out0; - } - - if (!request_mem_region(nuc900_audio->res->start, - resource_size(nuc900_audio->res), pdev->name)) { - ret = -EBUSY; - goto out0; - } - - nuc900_audio->mmio = ioremap(nuc900_audio->res->start, - resource_size(nuc900_audio->res)); - if (!nuc900_audio->mmio) { - ret = -ENOMEM; - goto out1; - } - - nuc900_audio->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(nuc900_audio->clk)) { - ret = PTR_ERR(nuc900_audio->clk); - goto out2; - } - - nuc900_audio->irq_num = platform_get_irq(pdev, 0); - if (!nuc900_audio->irq_num) { - ret = -EBUSY; - goto out3; - } - - nuc900_ac97_data = nuc900_audio; - - ret = snd_soc_register_dai(&pdev->dev, &nuc900_ac97_dai); - if (ret) - goto out3; - - /* enbale ac97 multifunction pin */ - mfp_set_groupg(nuc900_audio->dev, NULL); - - return 0; - -out3: - clk_put(nuc900_audio->clk); -out2: - iounmap(nuc900_audio->mmio); -out1: - release_mem_region(nuc900_audio->res->start, - resource_size(nuc900_audio->res)); -out0: - kfree(nuc900_audio); - return ret; -} - -static int __devexit nuc900_ac97_drvremove(struct platform_device *pdev) -{ - snd_soc_unregister_dai(&pdev->dev); - - clk_put(nuc900_ac97_data->clk); - iounmap(nuc900_ac97_data->mmio); - release_mem_region(nuc900_ac97_data->res->start, - resource_size(nuc900_ac97_data->res)); - - kfree(nuc900_ac97_data); - nuc900_ac97_data = NULL; - - return 0; -} - -static struct platform_driver nuc900_ac97_driver = { - .driver = { - .name = "nuc900-ac97", - .owner = THIS_MODULE, - }, - .probe = nuc900_ac97_drvprobe, - .remove = __devexit_p(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"); diff --git a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.c b/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.c deleted file mode 100644 index 2f6e6fd6..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright (c) 2010 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation;version 2 of the License. - * - */ - -#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" - -static struct snd_soc_dai_link nuc900evb_ac97_dai = { - .name = "AC97", - .stream_name = "AC97 HiFi", - .cpu_dai_name = "nuc900-ac97", - .codec_dai_name = "ac97-hifi", - .codec_name = "ac97-codec", - .platform_name = "nuc900-pcm-audio", -}; - -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"); diff --git a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.h b/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.h deleted file mode 100644 index 59f7e8ed..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-audio.h +++ /dev/null @@ -1,115 +0,0 @@ -/* - * Copyright (c) 2010 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation;version 2 of the License. - * - */ - -#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; - dma_addr_t dma_addr[2]; - unsigned long buffersize[2]; - unsigned long irq_num; - struct snd_pcm_substream *substream; - struct resource *res; - struct clk *clk; - struct device *dev; - -}; - -extern struct nuc900_audio *nuc900_ac97_data; - -#endif /*end _NUC900_AUDIO_H */ diff --git a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-pcm.c b/ANDROID_3.4.5/sound/soc/nuc900/nuc900-pcm.c deleted file mode 100644 index 37585b47..00000000 --- a/ANDROID_3.4.5/sound/soc/nuc900/nuc900-pcm.c +++ /dev/null @@ -1,365 +0,0 @@ -/* - * Copyright (c) 2010 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation;version 2 of the License. - * - */ - -#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, - .formats = SNDRV_PCM_FMTBIT_S16_LE, - .channels_min = 1, - .channels_max = 2, - .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) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct nuc900_audio *nuc900_audio = runtime->private_data; - unsigned long flags; - int ret = 0; - - ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); - if (ret < 0) - return ret; - - spin_lock_irqsave(&nuc900_audio->lock, flags); - - nuc900_audio->substream = substream; - nuc900_audio->dma_addr[substream->stream] = runtime->dma_addr; - nuc900_audio->buffersize[substream->stream] = - params_buffer_bytes(params); - - spin_unlock_irqrestore(&nuc900_audio->lock, flags); - - return ret; -} - -static void nuc900_update_dma_register(struct snd_pcm_substream *substream, - dma_addr_t dma_addr, size_t count) -{ - 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, dma_addr); - AUDIO_WRITE(mmio_len, count); -} - -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, - nuc900_audio->dma_addr[substream->stream], - nuc900_audio->buffersize[substream->stream]); - - 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_writecombine(substream->pcm->card->dev, vma, - runtime->dma_area, - runtime->dma_addr, - runtime->dma_bytes); -} - -static 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 void nuc900_dma_free_dma_buffers(struct snd_pcm *pcm) -{ - snd_pcm_lib_preallocate_free_for_all(pcm); -} - -static u64 nuc900_pcm_dmamask = DMA_BIT_MASK(32); -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; - - if (!card->dev->dma_mask) - card->dev->dma_mask = &nuc900_pcm_dmamask; - if (!card->dev->coherent_dma_mask) - card->dev->coherent_dma_mask = DMA_BIT_MASK(32); - - snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, - card->dev, 4 * 1024, (4 * 1024) - 1); - - return 0; -} - -static struct snd_soc_platform_driver nuc900_soc_platform = { - .ops = &nuc900_dma_ops, - .pcm_new = nuc900_dma_new, - .pcm_free = nuc900_dma_free_dma_buffers, -}; - -static int __devinit nuc900_soc_platform_probe(struct platform_device *pdev) -{ - return snd_soc_register_platform(&pdev->dev, &nuc900_soc_platform); -} - -static int __devexit nuc900_soc_platform_remove(struct platform_device *pdev) -{ - snd_soc_unregister_platform(&pdev->dev); - return 0; -} - -static struct platform_driver nuc900_pcm_driver = { - .driver = { - .name = "nuc900-pcm-audio", - .owner = THIS_MODULE, - }, - - .probe = nuc900_soc_platform_probe, - .remove = __devexit_p(nuc900_soc_platform_remove), -}; - -module_platform_driver(nuc900_pcm_driver); - -MODULE_AUTHOR("Wan ZongShun, <mcuos.com@gmail.com>"); -MODULE_DESCRIPTION("nuc900 Audio DMA module"); -MODULE_LICENSE("GPL"); |