diff options
Diffstat (limited to 'sound/soc/kirkwood/kirkwood-i2s.c')
| -rw-r--r-- | sound/soc/kirkwood/kirkwood-i2s.c | 670 |
1 files changed, 670 insertions, 0 deletions
diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kirkwood-i2s.c new file mode 100644 index 000000000..3a36d60e1 --- /dev/null +++ b/sound/soc/kirkwood/kirkwood-i2s.c @@ -0,0 +1,670 @@ +/* + * 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"); |