--- /dev/null
+/*
+ * kirkwood-i2s.c
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mbus.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <linux/platform_data/asoc-kirkwood.h>
+#include <linux/of.h>
+
+#include "kirkwood.h"
+
+#define DRV_NAME "mvebu-audio"
+
+#define KIRKWOOD_I2S_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE | \
+ SNDRV_PCM_FMTBIT_S32_LE)
+
+#define KIRKWOOD_SPDIF_FORMATS \
+ (SNDRV_PCM_FMTBIT_S16_LE | \
+ SNDRV_PCM_FMTBIT_S24_LE)
+
+static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long mask;
+ unsigned long value;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_RIGHT_J:
+ mask = KIRKWOOD_I2S_CTL_RJ;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ mask = KIRKWOOD_I2S_CTL_LJ;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ mask = KIRKWOOD_I2S_CTL_I2S;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * Set same format for playback and record
+ * This avoids some troubles.
+ */
+ value = readl(priv->io+KIRKWOOD_I2S_PLAYCTL);
+ value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+ value |= mask;
+ writel(value, priv->io+KIRKWOOD_I2S_PLAYCTL);
+
+ value = readl(priv->io+KIRKWOOD_I2S_RECCTL);
+ value &= ~KIRKWOOD_I2S_CTL_JUST_MASK;
+ value |= mask;
+ writel(value, priv->io+KIRKWOOD_I2S_RECCTL);
+
+ return 0;
+}
+
+static inline void kirkwood_set_dco(void __iomem *io, unsigned long rate)
+{
+ unsigned long value;
+
+ value = KIRKWOOD_DCO_CTL_OFFSET_0;
+ switch (rate) {
+ default:
+ case 44100:
+ value |= KIRKWOOD_DCO_CTL_FREQ_11;
+ break;
+ case 48000:
+ value |= KIRKWOOD_DCO_CTL_FREQ_12;
+ break;
+ case 96000:
+ value |= KIRKWOOD_DCO_CTL_FREQ_24;
+ break;
+ }
+ writel(value, io + KIRKWOOD_DCO_CTL);
+
+ /* wait for dco locked */
+ do {
+ cpu_relax();
+ value = readl(io + KIRKWOOD_DCO_SPCR_STATUS);
+ value &= KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK;
+ } while (value == 0);
+}
+
+static void kirkwood_set_rate(struct snd_soc_dai *dai,
+ struct kirkwood_dma_data *priv, unsigned long rate)
+{
+ uint32_t clks_ctrl;
+
+ if (IS_ERR(priv->extclk)) {
+ /* use internal dco for the supported rates
+ * defined in kirkwood_i2s_dai */
+ dev_dbg(dai->dev, "%s: dco set rate = %lu\n",
+ __func__, rate);
+ kirkwood_set_dco(priv->io, rate);
+
+ clks_ctrl = KIRKWOOD_MCLK_SOURCE_DCO;
+ } else {
+ /* use the external clock for the other rates
+ * defined in kirkwood_i2s_dai_extclk */
+ dev_dbg(dai->dev, "%s: extclk set rate = %lu -> %lu\n",
+ __func__, rate, 256 * rate);
+ clk_set_rate(priv->extclk, 256 * rate);
+
+ clks_ctrl = KIRKWOOD_MCLK_SOURCE_EXTCLK;
+ }
+ writel(clks_ctrl, priv->io + KIRKWOOD_CLOCKS_CTRL);
+}
+
+static int kirkwood_i2s_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_set_dma_data(dai, substream, priv);
+ return 0;
+}
+
+static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl_play, ctl_rec;
+ unsigned int i2s_reg;
+ unsigned long i2s_value;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ i2s_reg = KIRKWOOD_I2S_PLAYCTL;
+ } else {
+ i2s_reg = KIRKWOOD_I2S_RECCTL;
+ }
+
+ kirkwood_set_rate(dai, priv, params_rate(params));
+
+ i2s_value = readl(priv->io+i2s_reg);
+ i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
+
+ /*
+ * Size settings in play/rec i2s control regs and play/rec control
+ * regs must be the same.
+ */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_16;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_16_C |
+ KIRKWOOD_PLAYCTL_I2S_EN |
+ KIRKWOOD_PLAYCTL_SPDIF_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_16_C |
+ KIRKWOOD_RECCTL_I2S_EN |
+ KIRKWOOD_RECCTL_SPDIF_EN;
+ break;
+ /*
+ * doesn't work... S20_3LE != kirkwood 20bit format ?
+ *
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_20 |
+ KIRKWOOD_PLAYCTL_I2S_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_20 |
+ KIRKWOOD_RECCTL_I2S_EN;
+ break;
+ */
+ case SNDRV_PCM_FORMAT_S24_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_24 |
+ KIRKWOOD_PLAYCTL_I2S_EN |
+ KIRKWOOD_PLAYCTL_SPDIF_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_24 |
+ KIRKWOOD_RECCTL_I2S_EN |
+ KIRKWOOD_RECCTL_SPDIF_EN;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
+ ctl_play = KIRKWOOD_PLAYCTL_SIZE_32 |
+ KIRKWOOD_PLAYCTL_I2S_EN;
+ ctl_rec = KIRKWOOD_RECCTL_SIZE_32 |
+ KIRKWOOD_RECCTL_I2S_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (params_channels(params) == 1)
+ ctl_play |= KIRKWOOD_PLAYCTL_MONO_BOTH;
+ else
+ ctl_play |= KIRKWOOD_PLAYCTL_MONO_OFF;
+
+ priv->ctl_play &= ~(KIRKWOOD_PLAYCTL_MONO_MASK |
+ KIRKWOOD_PLAYCTL_ENABLE_MASK |
+ KIRKWOOD_PLAYCTL_SIZE_MASK);
+ priv->ctl_play |= ctl_play;
+ } else {
+ priv->ctl_rec &= ~(KIRKWOOD_RECCTL_ENABLE_MASK |
+ KIRKWOOD_RECCTL_SIZE_MASK);
+ priv->ctl_rec |= ctl_rec;
+ }
+
+ writel(i2s_value, priv->io+i2s_reg);
+
+ return 0;
+}
+
+static unsigned kirkwood_i2s_play_mute(unsigned ctl)
+{
+ if (!(ctl & KIRKWOOD_PLAYCTL_I2S_EN))
+ ctl |= KIRKWOOD_PLAYCTL_I2S_MUTE;
+ if (!(ctl & KIRKWOOD_PLAYCTL_SPDIF_EN))
+ ctl |= KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ return ctl;
+}
+
+static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl, value;
+
+ ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+ if ((ctl & KIRKWOOD_PLAYCTL_ENABLE_MASK) == 0) {
+ unsigned timeout = 5000;
+ /*
+ * The Armada510 spec says that if we enter pause mode, the
+ * busy bit must be read back as clear _twice_. Make sure
+ * we respect that otherwise we get DMA underruns.
+ */
+ do {
+ value = ctl;
+ ctl = readl(priv->io + KIRKWOOD_PLAYCTL);
+ if (!((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY))
+ break;
+ udelay(1);
+ } while (timeout--);
+
+ if ((ctl | value) & KIRKWOOD_PLAYCTL_PLAY_BUSY)
+ dev_notice(dai->dev, "timed out waiting for busy to deassert: %08x\n",
+ ctl);
+ }
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* configure */
+ ctl = priv->ctl_play;
+ if (dai->id == 0)
+ ctl &= ~KIRKWOOD_PLAYCTL_SPDIF_EN; /* i2s */
+ else
+ ctl &= ~KIRKWOOD_PLAYCTL_I2S_EN; /* spdif */
+ ctl = kirkwood_i2s_play_mute(ctl);
+ value = ctl & ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+ /* enable interrupts */
+ if (!runtime->no_period_wakeup) {
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+ }
+
+ /* enable playback */
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ /* stop audio, disable interrupts */
+ ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value &= ~KIRKWOOD_INT_CAUSE_PLAY_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* disable all playbacks */
+ ctl &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ ctl |= KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE;
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ ctl &= ~(KIRKWOOD_PLAYCTL_PAUSE | KIRKWOOD_PLAYCTL_I2S_MUTE |
+ KIRKWOOD_PLAYCTL_SPDIF_MUTE);
+ ctl = kirkwood_i2s_play_mute(ctl);
+ writel(ctl, priv->io + KIRKWOOD_PLAYCTL);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct kirkwood_dma_data *priv = snd_soc_dai_get_drvdata(dai);
+ uint32_t ctl, value;
+
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* configure */
+ ctl = priv->ctl_rec;
+ if (dai->id == 0)
+ ctl &= ~KIRKWOOD_RECCTL_SPDIF_EN; /* i2s */
+ else
+ ctl &= ~KIRKWOOD_RECCTL_I2S_EN; /* spdif */
+
+ value = ctl & ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ /* enable interrupts */
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value |= KIRKWOOD_INT_CAUSE_REC_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* enable record */
+ writel(ctl, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ /* stop audio, disable interrupts */
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ value = readl(priv->io + KIRKWOOD_INT_MASK);
+ value &= ~KIRKWOOD_INT_CAUSE_REC_BYTES;
+ writel(value, priv->io + KIRKWOOD_INT_MASK);
+
+ /* disable all records */
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value |= KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_MUTE);
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int kirkwood_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ return kirkwood_i2s_play_trigger(substream, cmd, dai);
+ else
+ return kirkwood_i2s_rec_trigger(substream, cmd, dai);
+
+ return 0;
+}
+
+static int kirkwood_i2s_init(struct kirkwood_dma_data *priv)
+{
+ unsigned long value;
+ unsigned int reg_data;
+
+ /* put system in a "safe" state : */
+ /* disable audio interrupts */
+ writel(0xffffffff, priv->io + KIRKWOOD_INT_CAUSE);
+ writel(0, priv->io + KIRKWOOD_INT_MASK);
+
+ reg_data = readl(priv->io + 0x1200);
+ reg_data &= (~(0x333FF8));
+ reg_data |= 0x111D18;
+ writel(reg_data, priv->io + 0x1200);
+
+ msleep(500);
+
+ reg_data = readl(priv->io + 0x1200);
+ reg_data &= (~(0x333FF8));
+ reg_data |= 0x111D18;
+ writel(reg_data, priv->io + 0x1200);
+
+ /* disable playback/record */
+ value = readl(priv->io + KIRKWOOD_PLAYCTL);
+ value &= ~KIRKWOOD_PLAYCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_PLAYCTL);
+
+ value = readl(priv->io + KIRKWOOD_RECCTL);
+ value &= ~KIRKWOOD_RECCTL_ENABLE_MASK;
+ writel(value, priv->io + KIRKWOOD_RECCTL);
+
+ return 0;
+
+}
+
+static const struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
+ .startup = kirkwood_i2s_startup,
+ .trigger = kirkwood_i2s_trigger,
+ .hw_params = kirkwood_i2s_hw_params,
+ .set_fmt = kirkwood_i2s_set_fmt,
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai[2] = {
+ {
+ .name = "i2s",
+ .id = 0,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+ {
+ .name = "spdif",
+ .id = 1,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_96000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+};
+
+static struct snd_soc_dai_driver kirkwood_i2s_dai_extclk[2] = {
+ {
+ .name = "i2s",
+ .id = 0,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_I2S_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+ {
+ .name = "spdif",
+ .id = 1,
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .rate_min = 5512,
+ .rate_max = 192000,
+ .formats = KIRKWOOD_SPDIF_FORMATS,
+ },
+ .ops = &kirkwood_i2s_dai_ops,
+ },
+};
+
+static const struct snd_soc_component_driver kirkwood_i2s_component = {
+ .name = DRV_NAME,
+};
+
+static int kirkwood_i2s_dev_probe(struct platform_device *pdev)
+{
+ struct kirkwood_asoc_platform_data *data = pdev->dev.platform_data;
+ struct snd_soc_dai_driver *soc_dai = kirkwood_i2s_dai;
+ struct kirkwood_dma_data *priv;
+ struct resource *mem;
+ struct device_node *np = pdev->dev.of_node;
+ int err;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(&pdev->dev, "allocation failed\n");
+ return -ENOMEM;
+ }
+ dev_set_drvdata(&pdev->dev, priv);
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->io = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(priv->io))
+ return PTR_ERR(priv->io);
+
+ priv->irq = platform_get_irq(pdev, 0);
+ if (priv->irq <= 0) {
+ dev_err(&pdev->dev, "platform_get_irq failed\n");
+ return -ENXIO;
+ }
+
+ if (np) {
+ priv->burst = 128; /* might be 32 or 128 */
+ } else if (data) {
+ priv->burst = data->burst;
+ } else {
+ dev_err(&pdev->dev, "no DT nor platform data ?!\n");
+ return -EINVAL;
+ }
+
+ priv->clk = devm_clk_get(&pdev->dev, np ? "internal" : NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(&pdev->dev, "no clock\n");
+ return PTR_ERR(priv->clk);
+ }
+
+ err = clk_prepare_enable(priv->clk);
+ if (err < 0)
+ return err;
+
+ priv->extclk = devm_clk_get(&pdev->dev, "extclk");
+ if (IS_ERR(priv->extclk)) {
+ if (PTR_ERR(priv->extclk) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ } else {
+ if (clk_is_match(priv->extclk, priv->clk)) {
+ devm_clk_put(&pdev->dev, priv->extclk);
+ priv->extclk = ERR_PTR(-EINVAL);
+ } else {
+ dev_info(&pdev->dev, "found external clock\n");
+ clk_prepare_enable(priv->extclk);
+ soc_dai = kirkwood_i2s_dai_extclk;
+ }
+ }
+
+ /* Some sensible defaults - this reflects the powerup values */
+ priv->ctl_play = KIRKWOOD_PLAYCTL_SIZE_24;
+ priv->ctl_rec = KIRKWOOD_RECCTL_SIZE_24;
+
+ /* Select the burst size */
+ if (priv->burst == 32) {
+ priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_32;
+ priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_32;
+ } else {
+ priv->ctl_play |= KIRKWOOD_PLAYCTL_BURST_128;
+ priv->ctl_rec |= KIRKWOOD_RECCTL_BURST_128;
+ }
+
+ err = snd_soc_register_component(&pdev->dev, &kirkwood_i2s_component,
+ soc_dai, 2);
+ if (err) {
+ dev_err(&pdev->dev, "snd_soc_register_component failed\n");
+ goto err_component;
+ }
+
+ err = snd_soc_register_platform(&pdev->dev, &kirkwood_soc_platform);
+ if (err) {
+ dev_err(&pdev->dev, "snd_soc_register_platform failed\n");
+ goto err_platform;
+ }
+
+ kirkwood_i2s_init(priv);
+
+ return 0;
+ err_platform:
+ snd_soc_unregister_component(&pdev->dev);
+ err_component:
+ if (!IS_ERR(priv->extclk))
+ clk_disable_unprepare(priv->extclk);
+ clk_disable_unprepare(priv->clk);
+
+ return err;
+}
+
+static int kirkwood_i2s_dev_remove(struct platform_device *pdev)
+{
+ struct kirkwood_dma_data *priv = dev_get_drvdata(&pdev->dev);
+
+ snd_soc_unregister_platform(&pdev->dev);
+ snd_soc_unregister_component(&pdev->dev);
+
+ if (!IS_ERR(priv->extclk))
+ clk_disable_unprepare(priv->extclk);
+ clk_disable_unprepare(priv->clk);
+
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mvebu_audio_of_match[] = {
+ { .compatible = "marvell,kirkwood-audio" },
+ { .compatible = "marvell,dove-audio" },
+ { .compatible = "marvell,armada370-audio" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, mvebu_audio_of_match);
+#endif
+
+static struct platform_driver kirkwood_i2s_driver = {
+ .probe = kirkwood_i2s_dev_probe,
+ .remove = kirkwood_i2s_dev_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = of_match_ptr(mvebu_audio_of_match),
+ },
+};
+
+module_platform_driver(kirkwood_i2s_driver);
+
+/* Module information */
+MODULE_AUTHOR("Arnaud Patard, <arnaud.patard@rtp-net.org>");
+MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mvebu-audio");
Code Review / kvmfornfv.git / blobdiff