On Tue, Jan 26, 2010 at 02:51:40PM +0900, jassisinghbrar@xxxxxxxxx wrote:
> From: Jassi Brar <jassi.brar@xxxxxxxxxxx>
>
> Add the AC97 controller driver for Samsung SoCs that have one.
>
> Signed-off-by: Jassi Brar <jassi.brar@xxxxxxxxxxx>
> ---
> sound/soc/s3c24xx/Kconfig | 6 +-
> sound/soc/s3c24xx/Makefile | 3 +-
> sound/soc/s3c24xx/s3c-ac97.c | 535 ++++++++++++++++++++++++++++++++++++++++++
> sound/soc/s3c24xx/s3c-ac97.h | 23 ++
> 4 files changed, 565 insertions(+), 2 deletions(-)
> create mode 100644 sound/soc/s3c24xx/s3c-ac97.c
> create mode 100644 sound/soc/s3c24xx/s3c-ac97.h
>
> diff --git a/sound/soc/s3c24xx/Kconfig b/sound/soc/s3c24xx/Kconfig
> index b489f1a..ad3690e 100644
> --- a/sound/soc/s3c24xx/Kconfig
> +++ b/sound/soc/s3c24xx/Kconfig
> @@ -32,7 +32,11 @@ config SND_S3C2443_SOC_AC97
> select S3C2410_DMA
> select AC97_BUS
> select SND_SOC_AC97_BUS
> -
> +
> +config SND_S3C_SOC_AC97
> + tristate
> + select SND_SOC_AC97_BUS
> +
> config SND_S3C24XX_SOC_NEO1973_WM8753
> tristate "SoC I2S Audio support for NEO1973 - WM8753"
> depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA01
> diff --git a/sound/soc/s3c24xx/Makefile b/sound/soc/s3c24xx/Makefile
> index b744657..b7411bd 100644
> --- a/sound/soc/s3c24xx/Makefile
> +++ b/sound/soc/s3c24xx/Makefile
> @@ -4,12 +4,14 @@ snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o
> snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o
> snd-soc-s3c64xx-i2s-objs := s3c64xx-i2s.o
> snd-soc-s3c2443-ac97-objs := s3c2443-ac97.o
> +snd-soc-s3c-ac97-objs := s3c-ac97.o
> snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o
> snd-soc-s3c-pcm-objs := s3c-pcm.o
>
> obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o
> obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o
> obj-$(CONFIG_SND_S3C2443_SOC_AC97) += snd-soc-s3c2443-ac97.o
> +obj-$(CONFIG_SND_S3C_SOC_AC97) += snd-soc-s3c-ac97.o
> obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o
> obj-$(CONFIG_SND_S3C64XX_SOC_I2S) += snd-soc-s3c64xx-i2s.o
> obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o
> @@ -37,4 +39,3 @@ obj-$(CONFIG_SND_S3C24XX_SOC_SIMTEC) += snd-soc-s3c24xx-simtec.o
> obj-$(CONFIG_SND_S3C24XX_SOC_SIMTEC_HERMES) += snd-soc-s3c24xx-simtec-hermes.o
> obj-$(CONFIG_SND_S3C24XX_SOC_SIMTEC_TLV320AIC23) += snd-soc-s3c24xx-simtec-tlv320aic23.o
> obj-$(CONFIG_SND_S3C64XX_SOC_WM8580) += snd-soc-smdk64xx-wm8580.o
> -
> diff --git a/sound/soc/s3c24xx/s3c-ac97.c b/sound/soc/s3c24xx/s3c-ac97.c
> new file mode 100644
> index 0000000..acb8f51
> --- /dev/null
> +++ b/sound/soc/s3c24xx/s3c-ac97.c
> @@ -0,0 +1,535 @@
> +/* sound/soc/s3c24xx/s3c-ac97.c
> + *
> + * ALSA SoC Audio Layer - S3C AC97 Controller driver
> + * Evolved from s3c2443-ac97.c
> + *
> + * Copyright (c) 2010 Samsung Electronics Co. Ltd
> + * Author: Jaswinder Singh <jassi.brar@xxxxxxxxxxx>
> + * Credits: Graeme Gregory, Sean Choi
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/io.h>
> +#include <linux/delay.h>
> +#include <linux/clk.h>
> +
> +#include <sound/soc.h>
> +
> +#include <plat/regs-ac97.h>
> +#include <mach/dma.h>
> +#include <plat/audio.h>
> +
> +#include "s3c-dma.h"
> +#include "s3c-ac97.h"
> +
> +#define AC_CMD_ADDR(x) (x << 16)
> +#define AC_CMD_DATA(x) (x & 0xffff)
> +
> +struct s3c_ac97_info {
> + unsigned state;
> + struct clk *ac97_clk;
> + void __iomem *regs;
> + struct mutex lock;
> + struct completion done;
> +};
> +static struct s3c_ac97_info s3c_ac97;
> +
> +static struct s3c2410_dma_client s3c_dma_client_out = {
> + .name = "AC97 PCMOut"
> +};
> +
> +static struct s3c2410_dma_client s3c_dma_client_in = {
> + .name = "AC97 PCMIn"
> +};
> +
> +static struct s3c2410_dma_client s3c_dma_client_micin = {
> + .name = "AC97 MicIn"
> +};
> +
> +static struct s3c_dma_params s3c_ac97_pcm_out = {
> + .client = &s3c_dma_client_out,
> + .dma_size = 4,
> +};
> +
> +static struct s3c_dma_params s3c_ac97_pcm_in = {
> + .client = &s3c_dma_client_in,
> + .dma_size = 4,
> +};
> +
> +static struct s3c_dma_params s3c_ac97_mic_in = {
> + .client = &s3c_dma_client_micin,
> + .dma_size = 4,
> +};
> +
> +static void s3c_ac97_cold_reset(struct snd_ac97 *ac97)
> +{
> + writel(S3C_AC97_GLBCTRL_COLDRESET,
> + s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +
> + writel(0, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +}
> +
> +static void s3c_ac97_warm_reset(struct snd_ac97 *ac97)
> +{
> + writel(S3C_AC97_GLBCTRL_WARMRESET, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +
> + writel(0, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +}
It would be nice t osee something to convert a 'struct snd_ac97' to a
'struct s3c_ac97_info' as this is being passed in to most place and
would also help if there is ever >1 block.
> +static void s3c_ac97_activate(struct snd_ac97 *ac97)
> +{
> + u32 ac_glbctrl, stat;
> +
> + stat = readl(s3c_ac97.regs + S3C_AC97_GLBSTAT) & 0x7;
> + switch (stat) {
> + case S3C_AC97_GLBSTAT_MAINSTATE_ACTIVE:
> + return;
> + case S3C_AC97_GLBSTAT_MAINSTATE_READY:
> + case S3C_AC97_GLBSTAT_MAINSTATE_INIT:
> + break;
> + default:
> + s3c_ac97_cold_reset(ac97);
> + s3c_ac97_warm_reset(ac97);
> + break;
> + }
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl = S3C_AC97_GLBCTRL_ACLINKON;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +
> + ac_glbctrl |= S3C_AC97_GLBCTRL_TRANSFERDATAENABLE;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + msleep(1);
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl |= S3C_AC97_GLBCTRL_CODECREADYIE;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + INIT_COMPLETION(s3c_ac97.done);
> +
> + if (!wait_for_completion_timeout(&s3c_ac97.done, HZ))
> + printk(KERN_ERR "AC97: Unable to activate!");
> +}
> +
> +static unsigned short s3c_ac97_read(struct snd_ac97 *ac97,
> + unsigned short reg)
> +{
> + u32 ac_glbctrl, ac_codec_cmd;
> + u32 stat, addr, data;
> +
> + mutex_lock(&s3c_ac97.lock);
> +
> + s3c_ac97_activate(ac97);
> +
> + ac_codec_cmd = readl(s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> + ac_codec_cmd = S3C_AC97_CODEC_CMD_READ | AC_CMD_ADDR(reg);
> + writel(ac_codec_cmd, s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> +
> + udelay(50);
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl |= S3C_AC97_GLBCTRL_CODECREADYIE;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + INIT_COMPLETION(s3c_ac97.done);
> +
> + if (!wait_for_completion_timeout(&s3c_ac97.done, HZ))
> + printk(KERN_ERR "AC97: Unable to read!");
> +
> + stat = readl(s3c_ac97.regs + S3C_AC97_STAT);
> + addr = (stat >> 16) & 0x7f;
> + data = (stat & 0xffff);
> +
> + if (addr != reg)
> + printk(KERN_ERR "s3c-ac97: req addr = %02x,"
> + " rep addr = %02x\n", reg, addr);
> +
> + mutex_unlock(&s3c_ac97.lock);
> +
> + return (unsigned short)data;
> +}
> +
> +static void s3c_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
> + unsigned short val)
> +{
> + u32 ac_glbctrl, ac_codec_cmd;
> +
> + mutex_lock(&s3c_ac97.lock);
> +
> + s3c_ac97_activate(ac97);
> +
> + ac_codec_cmd = readl(s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> + ac_codec_cmd = AC_CMD_ADDR(reg) | AC_CMD_DATA(val);
> + writel(ac_codec_cmd, s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> +
> + udelay(50);
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl |= S3C_AC97_GLBCTRL_CODECREADYIE;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + INIT_COMPLETION(s3c_ac97.done);
> +
> + if (!wait_for_completion_timeout(&s3c_ac97.done, HZ))
> + printk(KERN_ERR "AC97: Unable to write!");
> +
> + ac_codec_cmd = readl(s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> + ac_codec_cmd |= S3C_AC97_CODEC_CMD_READ;
> + writel(ac_codec_cmd, s3c_ac97.regs + S3C_AC97_CODEC_CMD);
> +
> + mutex_unlock(&s3c_ac97.lock);
> +}
> +
> +static irqreturn_t s3c_ac97_irq(int irq, void *dev_id)
> +{
> + u32 ac_glbctrl, ac_glbstat;
> +
> + ac_glbstat = readl(s3c_ac97.regs + S3C_AC97_GLBSTAT);
> +
> + if (ac_glbstat & S3C_AC97_GLBSTAT_CODECREADY) {
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl &= ~S3C_AC97_GLBCTRL_CODECREADYIE;
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl |= (1<<30); /* Clear interrupt */
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + complete(&s3c_ac97.done);
> + }
> +
> + return IRQ_HANDLED;
> +}
> +
> +struct snd_ac97_bus_ops soc_ac97_ops = {
> + .read = s3c_ac97_read,
> + .write = s3c_ac97_write,
> + .warm_reset = s3c_ac97_warm_reset,
> + .reset = s3c_ac97_cold_reset,
> +};
> +EXPORT_SYMBOL_GPL(soc_ac97_ops);
> +
> +static int s3c_ac97_hw_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params,
> + struct snd_soc_dai *dai)
> +{
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
> +
> + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> + cpu_dai->dma_data = &s3c_ac97_pcm_out;
> + else
> + cpu_dai->dma_data = &s3c_ac97_pcm_in;
> +
> + return 0;
> +}
> +
> +static int s3c_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
> + struct snd_soc_dai *dai)
> +{
> + u32 ac_glbctrl;
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + int channel = ((struct s3c_dma_params *)
> + rtd->dai->cpu_dai->dma_data)->channel;
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
> + ac_glbctrl &= ~S3C_AC97_GLBCTRL_PCMINTM_MASK;
> + else
> + ac_glbctrl &= ~S3C_AC97_GLBCTRL_PCMOUTTM_MASK;
> +
> + switch (cmd) {
> + case SNDRV_PCM_TRIGGER_START:
> + case SNDRV_PCM_TRIGGER_RESUME:
> + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
> + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
> + ac_glbctrl |= S3C_AC97_GLBCTRL_PCMINTM_DMA;
> + else
> + ac_glbctrl |= S3C_AC97_GLBCTRL_PCMOUTTM_DMA;
> + break;
> +
> + case SNDRV_PCM_TRIGGER_STOP:
> + case SNDRV_PCM_TRIGGER_SUSPEND:
> + case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
> + break;
> + }
> +
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + s3c2410_dma_ctrl(channel, S3C2410_DMAOP_STARTED);
> +
> + return 0;
> +}
> +
> +static int s3c_ac97_hw_mic_params(struct snd_pcm_substream *substream,
> + struct snd_pcm_hw_params *params,
> + struct snd_soc_dai *dai)
> +{
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
> +
> + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
> + return -ENODEV;
> + else
> + cpu_dai->dma_data = &s3c_ac97_mic_in;
> +
> + return 0;
> +}
> +
> +static int s3c_ac97_mic_trigger(struct snd_pcm_substream *substream,
> + int cmd, struct snd_soc_dai *dai)
> +{
> + u32 ac_glbctrl;
> + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> + int channel = ((struct s3c_dma_params *)
> + rtd->dai->cpu_dai->dma_data)->channel;
> +
> + ac_glbctrl = readl(s3c_ac97.regs + S3C_AC97_GLBCTRL);
> + ac_glbctrl &= ~S3C_AC97_GLBCTRL_MICINTM_MASK;
> +
> + switch (cmd) {
> + case SNDRV_PCM_TRIGGER_START:
> + case SNDRV_PCM_TRIGGER_RESUME:
> + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
> + ac_glbctrl |= S3C_AC97_GLBCTRL_MICINTM_DMA;
> + break;
> +
> + case SNDRV_PCM_TRIGGER_STOP:
> + case SNDRV_PCM_TRIGGER_SUSPEND:
> + case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
> + break;
> + }
> +
> + writel(ac_glbctrl, s3c_ac97.regs + S3C_AC97_GLBCTRL);
> +
> + s3c2410_dma_ctrl(channel, S3C2410_DMAOP_STARTED);
> +
> + return 0;
> +}
> +
> +#define S3C_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
> + SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
> + SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
> + SNDRV_PCM_RATE_48000)
> +
> +static struct snd_soc_dai_ops s3c_ac97_dai_ops = {
> + .hw_params = s3c_ac97_hw_params,
> + .trigger = s3c_ac97_trigger,
> +};
> +
> +static struct snd_soc_dai_ops s3c_ac97_mic_dai_ops = {
> + .hw_params = s3c_ac97_hw_mic_params,
> + .trigger = s3c_ac97_mic_trigger,
> +};
> +
> +struct snd_soc_dai s3c_ac97_dai[] = {
> + [S3C_AC97_DAI_PCM] = {
> + .name = "s3c-ac97",
> + .id = S3C_AC97_DAI_PCM,
> + .ac97_control = 1,
> + .playback = {
> + .stream_name = "AC97 Playback",
> + .channels_min = 2,
> + .channels_max = 2,
> + .rates = S3C_AC97_RATES,
> + .formats = SNDRV_PCM_FMTBIT_S16_LE,},
> + .capture = {
> + .stream_name = "AC97 Capture",
> + /* NOTE: If the codec ouputs just one slot,
> + * it *seems* our AC97 controller reads the only
> + * valid slot(if either 3 or 4) for PCM-In.
> + * For such cases, we record Mono.
> + */
> + .channels_min = 1,
> + .channels_max = 2,
> + .rates = S3C_AC97_RATES,
> + .formats = SNDRV_PCM_FMTBIT_S16_LE,},
> + .ops = &s3c_ac97_dai_ops,
> + },
> + [S3C_AC97_DAI_MIC] = {
> + .name = "s3c-ac97-mic",
> + .id = S3C_AC97_DAI_MIC,
> + .ac97_control = 1,
> + .capture = {
> + .stream_name = "AC97 Mic Capture",
> + .channels_min = 1,
> + /* NOTE: If the codec(like WM9713) can't ouput just
> + * one slot, it *seems* our AC97 controller reads
> + * two slots(if one of them is Slot-6) for MIC also.
> + * For such cases, we record Stereo.
> + */
> + .channels_max = 2,
> + .rates = S3C_AC97_RATES,
> + .formats = SNDRV_PCM_FMTBIT_S16_LE,},
> + .ops = &s3c_ac97_mic_dai_ops,
> + },
> +};
> +EXPORT_SYMBOL_GPL(s3c_ac97_dai);
> +
> +static __devinit int s3c_ac97_probe(struct platform_device *pdev)
> +{
> + struct resource *mem_res, *dmatx_res, *dmarx_res, *dmamic_res, *irq_res;
> + struct s3c_audio_pdata *ac97_pdata;
> + int ret;
> +
> + ac97_pdata = pdev->dev.platform_data;
> + if (!ac97_pdata || !ac97_pdata->cfg_gpio) {
> + dev_err(&pdev->dev, "cfg_gpio callback not provided!\n");
> + return -EINVAL;
> + }
> +
> + /* Check for availability of necessary resource */
> + dmatx_res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
> + if (!dmatx_res) {
> + dev_err(&pdev->dev, "Unable to get AC97-TX dma resource\n");
> + return -ENXIO;
> + }
> +
> + dmarx_res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
> + if (!dmarx_res) {
> + dev_err(&pdev->dev, "Unable to get AC97-RX dma resource\n");
> + return -ENXIO;
> + }
> +
> + dmamic_res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
> + if (!dmamic_res) {
> + dev_err(&pdev->dev, "Unable to get AC97-MIC dma resource\n");
> + return -ENXIO;
> + }
> +
> + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!mem_res) {
> + dev_err(&pdev->dev, "Unable to get register resource\n");
> + return -ENXIO;
> + }
> +
> + irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> + if (!irq_res) {
> + dev_err(&pdev->dev, "AC97 IRQ not provided!\n");
> + return -ENXIO;
> + }
> +
> + if (!request_mem_region(mem_res->start,
> + resource_size(mem_res), "s3c-ac97")) {
> + dev_err(&pdev->dev, "Unable to request register region\n");
> + return -EBUSY;
> + }
> +
> + s3c_ac97_pcm_out.channel = dmatx_res->start;
> + s3c_ac97_pcm_out.dma_addr = mem_res->start + S3C_AC97_PCM_DATA;
> + s3c_ac97_pcm_in.channel = dmarx_res->start;
> + s3c_ac97_pcm_in.dma_addr = mem_res->start + S3C_AC97_PCM_DATA;
> + s3c_ac97_mic_in.channel = dmamic_res->start;
> + s3c_ac97_mic_in.dma_addr = mem_res->start + S3C_AC97_MIC_DATA;
> +
> + init_completion(&s3c_ac97.done);
> + mutex_init(&s3c_ac97.lock);
> +
> + s3c_ac97.regs = ioremap(mem_res->start, resource_size(mem_res));
> + if (s3c_ac97.regs == NULL) {
> + dev_err(&pdev->dev, "Unable to ioremap register region\n");
> + ret = -ENXIO;
> + goto lb1;
> + }
> +
> + s3c_ac97.ac97_clk = clk_get(&pdev->dev, "ac97");
> + if (IS_ERR(s3c_ac97.ac97_clk)) {
> + dev_err(&pdev->dev, "s3c-ac97 failed to get ac97_clock\n");
> + ret = -ENODEV;
> + goto lb2;
> + }
> + clk_enable(s3c_ac97.ac97_clk);
> +
> + if (ac97_pdata->cfg_gpio(pdev)) {
> + dev_err(&pdev->dev, "Unable to configure gpio\n");
> + ret = -EINVAL;
> + goto lb3;
> + }
> +
> + ret = request_irq(irq_res->start, s3c_ac97_irq,
> + IRQF_DISABLED, "AC97", NULL);
> + if (ret < 0) {
> + printk(KERN_ERR "s3c-ac97: interrupt request failed.\n");
> + goto lb4;
> + }
> +
> + s3c_ac97_dai[S3C_AC97_DAI_PCM].dev = &pdev->dev;
> + s3c_ac97_dai[S3C_AC97_DAI_MIC].dev = &pdev->dev;
> +
> + ret = snd_soc_register_dais(s3c_ac97_dai, ARRAY_SIZE(s3c_ac97_dai));
> + if (ret)
> + goto lb5;
> +
> + return 0;
> +
> +lb5:
> + free_irq(irq_res->start, NULL);
> +lb4:
> +lb3:
> + clk_disable(s3c_ac97.ac97_clk);
> + clk_put(s3c_ac97.ac97_clk);
> +lb2:
> + iounmap(s3c_ac97.regs);
> +lb1:
> + release_mem_region(mem_res->start, resource_size(mem_res));
> +
> + return ret;
> +}
> +
> +static __devexit int s3c_ac97_remove(struct platform_device *pdev)
> +{
> + struct resource *mem_res, *irq_res;
> +
> + snd_soc_unregister_dais(s3c_ac97_dai, ARRAY_SIZE(s3c_ac97_dai));
> +
> + irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> + if (irq_res)
> + free_irq(irq_res->start, NULL);
> +
> + clk_disable(s3c_ac97.ac97_clk);
> + clk_put(s3c_ac97.ac97_clk);
> +
> + iounmap(s3c_ac97.regs);
> +
> + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (mem_res)
> + release_mem_region(mem_res->start, resource_size(mem_res));
> +
> + return 0;
> +}
> +
> +static struct platform_driver s3c_ac97_driver = {
> + .probe = s3c_ac97_probe,
> + .remove = s3c_ac97_remove,
> + .driver = {
> + .name = "s3c-ac97",
> + .owner = THIS_MODULE,
> + },
> +};
> +
> +static int __init s3c_ac97_init(void)
> +{
> + return platform_driver_register(&s3c_ac97_driver);
> +}
> +module_init(s3c_ac97_init);
> +
> +static void __exit s3c_ac97_exit(void)
> +{
> + platform_driver_unregister(&s3c_ac97_driver);
> +}
> +module_exit(s3c_ac97_exit);
> +
> +MODULE_AUTHOR("Jaswinder Singh, <jassi.brar@xxxxxxxxxxx>");
> +MODULE_DESCRIPTION("AC97 driver for the Samsung SoC");
> +MODULE_LICENSE("GPL");
> diff --git a/sound/soc/s3c24xx/s3c-ac97.h b/sound/soc/s3c24xx/s3c-ac97.h
> new file mode 100644
> index 0000000..2781983
> --- /dev/null
> +++ b/sound/soc/s3c24xx/s3c-ac97.h
> @@ -0,0 +1,23 @@
> +/* sound/soc/s3c24xx/s3c-ac97.h
> + *
> + * ALSA SoC Audio Layer - S3C AC97 Controller driver
> + * Evolved from s3c2443-ac97.h
> + *
> + * Copyright (c) 2010 Samsung Electronics Co. Ltd
> + * Author: Jaswinder Singh <jassi.brar@xxxxxxxxxxx>
> + * Credits: Graeme Gregory, Sean Choi
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef __S3C_AC97_H_
> +#define __S3C_AC97_H_
> +
> +#define S3C_AC97_DAI_PCM 0
> +#define S3C_AC97_DAI_MIC 1
> +
> +extern struct snd_soc_dai s3c_ac97_dai[];
> +
> +#endif /* __S3C_AC97_H_ */
> --
> 1.6.2.5
>
> --
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> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Out of interest, how similar are the two blocks and could the s3c2443
case be elided into this one with some minimal checks for which one is
currently in use?
--
Ben
Q: What's a light-year?
A: One-third less calories than a regular year.
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