ASoC: kirkwood: Add i2s support
This patch enables support for the i2s controller available on kirkwood platforms Signed-off-by: Arnaud Patard <apatard@mandriva.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>hifive-unleashed-5.1
apatard@mandriva.com
Mark Brown
parent
492e2bf141
commit
f9b95980f8
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@ -32,6 +32,7 @@ source "sound/soc/fsl/Kconfig"
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source "sound/soc/imx/Kconfig"
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source "sound/soc/nuc900/Kconfig"
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source "sound/soc/omap/Kconfig"
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source "sound/soc/kirkwood/Kconfig"
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source "sound/soc/pxa/Kconfig"
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source "sound/soc/s3c24xx/Kconfig"
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source "sound/soc/s6000/Kconfig"
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@ -10,6 +10,7 @@ obj-$(CONFIG_SND_SOC) += fsl/
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obj-$(CONFIG_SND_SOC) += imx/
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obj-$(CONFIG_SND_SOC) += nuc900/
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obj-$(CONFIG_SND_SOC) += omap/
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obj-$(CONFIG_SND_SOC) += kirkwood/
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obj-$(CONFIG_SND_SOC) += pxa/
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obj-$(CONFIG_SND_SOC) += s3c24xx/
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obj-$(CONFIG_SND_SOC) += s6000/
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@ -0,0 +1,11 @@
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config SND_KIRKWOOD_SOC
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tristate "SoC Audio for the Marvell Kirkwood chip"
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depends on ARCH_KIRKWOOD
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help
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Say Y or M if you want to add support for codecs attached to
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the Kirkwood I2S interface. You will also need to select the
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audio interfaces to support below.
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config SND_KIRKWOOD_SOC_I2S
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tristate
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@ -0,0 +1,6 @@
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snd-soc-kirkwood-objs := kirkwood-dma.o
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snd-soc-kirkwood-i2s-objs := kirkwood-i2s.o
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obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
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obj-$(CONFIG_SND_KIRKWOOD_SOC_I2S) += snd-soc-kirkwood-i2s.o
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@ -0,0 +1,383 @@
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/*
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* kirkwood-dma.c
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*
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* (c) 2010 Arnaud Patard <apatard@mandriva.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/dma-mapping.h>
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#include <linux/mbus.h>
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#include <sound/soc.h>
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#include "kirkwood-dma.h"
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#include "kirkwood.h"
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#define KIRKWOOD_RATES \
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(SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
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#define KIRKWOOD_FORMATS \
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(SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_S32_LE)
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struct kirkwood_dma_priv {
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struct snd_pcm_substream *play_stream;
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struct snd_pcm_substream *rec_stream;
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struct kirkwood_dma_data *data;
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};
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static struct snd_pcm_hardware kirkwood_dma_snd_hw = {
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.info = (SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_PAUSE),
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.formats = KIRKWOOD_FORMATS,
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.rates = KIRKWOOD_RATES,
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.rate_min = 44100,
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.rate_max = 96000,
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.channels_min = 1,
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.channels_max = 2,
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.buffer_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES * KIRKWOOD_SND_MAX_PERIODS,
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.period_bytes_min = KIRKWOOD_SND_MIN_PERIOD_BYTES,
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.period_bytes_max = KIRKWOOD_SND_MAX_PERIOD_BYTES,
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.periods_min = KIRKWOOD_SND_MIN_PERIODS,
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.periods_max = KIRKWOOD_SND_MAX_PERIODS,
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.fifo_size = 0,
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};
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static u64 kirkwood_dma_dmamask = 0xFFFFFFFFUL;
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static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id)
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{
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struct kirkwood_dma_priv *prdata = dev_id;
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struct kirkwood_dma_data *priv = prdata->data;
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unsigned long mask, status, cause;
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mask = readl(priv->io + KIRKWOOD_INT_MASK);
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status = readl(priv->io + KIRKWOOD_INT_CAUSE) & mask;
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cause = readl(priv->io + KIRKWOOD_ERR_CAUSE);
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if (unlikely(cause)) {
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printk(KERN_WARNING "%s: got err interrupt 0x%lx\n",
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__func__, cause);
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writel(cause, priv->io + KIRKWOOD_ERR_CAUSE);
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return IRQ_HANDLED;
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}
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/* we've enabled only bytes interrupts ... */
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if (status & ~(KIRKWOOD_INT_CAUSE_PLAY_BYTES | \
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KIRKWOOD_INT_CAUSE_REC_BYTES)) {
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printk(KERN_WARNING "%s: unexpected interrupt %lx\n",
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__func__, status);
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return IRQ_NONE;
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}
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/* ack int */
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writel(status, priv->io + KIRKWOOD_INT_CAUSE);
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if (status & KIRKWOOD_INT_CAUSE_PLAY_BYTES)
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snd_pcm_period_elapsed(prdata->play_stream);
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if (status & KIRKWOOD_INT_CAUSE_REC_BYTES)
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snd_pcm_period_elapsed(prdata->rec_stream);
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return IRQ_HANDLED;
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}
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static void kirkwood_dma_conf_mbus_windows(void __iomem *base, int win,
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unsigned long dma,
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struct mbus_dram_target_info *dram)
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{
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int i;
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/* First disable and clear windows */
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writel(0, base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
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writel(0, base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
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/* try to find matching cs for current dma address */
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for (i = 0; i < dram->num_cs; i++) {
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struct mbus_dram_window *cs = dram->cs + i;
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if ((cs->base & 0xffff0000) < (dma & 0xffff0000)) {
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writel(cs->base & 0xffff0000,
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base + KIRKWOOD_AUDIO_WIN_BASE_REG(win));
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writel(((cs->size - 1) & 0xffff0000) |
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(cs->mbus_attr << 8) |
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(dram->mbus_dram_target_id << 4) | 1,
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base + KIRKWOOD_AUDIO_WIN_CTRL_REG(win));
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}
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}
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}
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static int kirkwood_dma_open(struct snd_pcm_substream *substream)
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{
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int err;
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
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struct kirkwood_dma_data *priv;
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struct kirkwood_dma_priv *prdata = cpu_dai->private_data;
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unsigned long addr;
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priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
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/* Ensure that all constraints linked to dma burst are fullfilled */
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err = snd_pcm_hw_constraint_minmax(runtime,
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SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
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priv->burst * 2,
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KIRKWOOD_AUDIO_BUF_MAX-1);
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if (err < 0)
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return err;
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err = snd_pcm_hw_constraint_step(runtime, 0,
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SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
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priv->burst);
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if (err < 0)
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return err;
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err = snd_pcm_hw_constraint_step(substream->runtime, 0,
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SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
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priv->burst);
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if (err < 0)
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return err;
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if (soc_runtime->dai->cpu_dai->private_data == NULL) {
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prdata = kzalloc(sizeof(struct kirkwood_dma_priv), GFP_KERNEL);
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if (prdata == NULL)
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return -ENOMEM;
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prdata->data = priv;
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err = request_irq(priv->irq, kirkwood_dma_irq, IRQF_SHARED,
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"kirkwood-i2s", prdata);
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if (err) {
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kfree(prdata);
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return -EBUSY;
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}
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soc_runtime->dai->cpu_dai->private_data = prdata;
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/*
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* Enable Error interrupts. We're only ack'ing them but
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* it's usefull for diagnostics
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*/
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writel((unsigned long)-1, priv->io + KIRKWOOD_ERR_MASK);
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}
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addr = virt_to_phys(substream->dma_buffer.area);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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prdata->play_stream = substream;
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kirkwood_dma_conf_mbus_windows(priv->io,
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KIRKWOOD_PLAYBACK_WIN, addr, priv->dram);
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} else {
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prdata->rec_stream = substream;
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kirkwood_dma_conf_mbus_windows(priv->io,
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KIRKWOOD_RECORD_WIN, addr, priv->dram);
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}
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return 0;
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}
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static int kirkwood_dma_close(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
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struct kirkwood_dma_priv *prdata = cpu_dai->private_data;
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struct kirkwood_dma_data *priv;
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priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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if (!prdata || !priv)
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return 0;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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prdata->play_stream = NULL;
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else
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prdata->rec_stream = NULL;
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if (!prdata->play_stream && !prdata->rec_stream) {
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writel(0, priv->io + KIRKWOOD_ERR_MASK);
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free_irq(priv->irq, prdata);
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kfree(prdata);
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soc_runtime->dai->cpu_dai->private_data = NULL;
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}
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return 0;
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}
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static int kirkwood_dma_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
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runtime->dma_bytes = params_buffer_bytes(params);
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return 0;
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}
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static int kirkwood_dma_hw_free(struct snd_pcm_substream *substream)
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{
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snd_pcm_set_runtime_buffer(substream, NULL);
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return 0;
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}
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static int kirkwood_dma_prepare(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
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struct kirkwood_dma_data *priv;
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unsigned long size, count;
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priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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/* compute buffer size in term of "words" as requested in specs */
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size = frames_to_bytes(runtime, runtime->buffer_size);
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size = (size>>2)-1;
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count = snd_pcm_lib_period_bytes(substream);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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writel(count, priv->io + KIRKWOOD_PLAY_BYTE_INT_COUNT);
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writel(runtime->dma_addr, priv->io + KIRKWOOD_PLAY_BUF_ADDR);
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writel(size, priv->io + KIRKWOOD_PLAY_BUF_SIZE);
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} else {
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writel(count, priv->io + KIRKWOOD_REC_BYTE_INT_COUNT);
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writel(runtime->dma_addr, priv->io + KIRKWOOD_REC_BUF_ADDR);
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writel(size, priv->io + KIRKWOOD_REC_BUF_SIZE);
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}
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return 0;
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}
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static snd_pcm_uframes_t kirkwood_dma_pointer(struct snd_pcm_substream
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*substream)
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{
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struct snd_soc_pcm_runtime *soc_runtime = substream->private_data;
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struct snd_soc_dai *cpu_dai = soc_runtime->dai->cpu_dai;
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struct kirkwood_dma_data *priv;
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snd_pcm_uframes_t count;
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priv = snd_soc_dai_get_dma_data(cpu_dai, substream);
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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count = bytes_to_frames(substream->runtime,
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readl(priv->io + KIRKWOOD_PLAY_BYTE_COUNT));
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else
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count = bytes_to_frames(substream->runtime,
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readl(priv->io + KIRKWOOD_REC_BYTE_COUNT));
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return count;
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}
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struct snd_pcm_ops kirkwood_dma_ops = {
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.open = kirkwood_dma_open,
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.close = kirkwood_dma_close,
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.ioctl = snd_pcm_lib_ioctl,
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.hw_params = kirkwood_dma_hw_params,
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.hw_free = kirkwood_dma_hw_free,
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.prepare = kirkwood_dma_prepare,
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.pointer = kirkwood_dma_pointer,
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};
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static int kirkwood_dma_preallocate_dma_buffer(struct snd_pcm *pcm,
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int stream)
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{
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struct snd_pcm_substream *substream = pcm->streams[stream].substream;
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struct snd_dma_buffer *buf = &substream->dma_buffer;
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size_t size = kirkwood_dma_snd_hw.buffer_bytes_max;
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buf->dev.type = SNDRV_DMA_TYPE_DEV;
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buf->dev.dev = pcm->card->dev;
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buf->area = dma_alloc_coherent(pcm->card->dev, size,
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&buf->addr, GFP_KERNEL);
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if (!buf->area)
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return -ENOMEM;
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buf->bytes = size;
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buf->private_data = NULL;
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return 0;
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}
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static int kirkwood_dma_new(struct snd_card *card,
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struct snd_soc_dai *dai, struct snd_pcm *pcm)
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{
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int ret;
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if (!card->dev->dma_mask)
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card->dev->dma_mask = &kirkwood_dma_dmamask;
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if (!card->dev->coherent_dma_mask)
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card->dev->coherent_dma_mask = 0xffffffff;
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if (dai->playback.channels_min) {
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ret = kirkwood_dma_preallocate_dma_buffer(pcm,
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SNDRV_PCM_STREAM_PLAYBACK);
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if (ret)
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return ret;
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}
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if (dai->capture.channels_min) {
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ret = kirkwood_dma_preallocate_dma_buffer(pcm,
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SNDRV_PCM_STREAM_CAPTURE);
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if (ret)
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return ret;
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}
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return 0;
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}
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static void kirkwood_dma_free_dma_buffers(struct snd_pcm *pcm)
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{
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struct snd_pcm_substream *substream;
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struct snd_dma_buffer *buf;
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int stream;
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for (stream = 0; stream < 2; stream++) {
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substream = pcm->streams[stream].substream;
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if (!substream)
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continue;
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buf = &substream->dma_buffer;
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if (!buf->area)
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continue;
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dma_free_coherent(pcm->card->dev, buf->bytes,
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buf->area, buf->addr);
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buf->area = NULL;
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}
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}
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struct snd_soc_platform kirkwood_soc_platform = {
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.name = "kirkwood-dma",
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.pcm_ops = &kirkwood_dma_ops,
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.pcm_new = kirkwood_dma_new,
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.pcm_free = kirkwood_dma_free_dma_buffers,
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};
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EXPORT_SYMBOL_GPL(kirkwood_soc_platform);
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static int __init kirkwood_soc_platform_init(void)
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{
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return snd_soc_register_platform(&kirkwood_soc_platform);
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}
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module_init(kirkwood_soc_platform_init);
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static void __exit kirkwood_soc_platform_exit(void)
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{
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snd_soc_unregister_platform(&kirkwood_soc_platform);
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}
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module_exit(kirkwood_soc_platform_exit);
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MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>");
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MODULE_DESCRIPTION("Marvell Kirkwood Audio DMA module");
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MODULE_LICENSE("GPL");
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@ -0,0 +1,17 @@
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/*
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* kirkwood-dma.h
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*
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* (c) 2010 Arnaud Patard <apatard@mandriva.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _KIRKWOOD_DMA_H
|
||||
#define _KIRKWOOD_DMA_H
|
||||
|
||||
extern struct snd_soc_platform kirkwood_soc_platform;
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,485 @@
|
|||
/*
|
||||
* kirkwood-i2s.c
|
||||
*
|
||||
* (c) 2010 Arnaud Patard <apatard@mandriva.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; 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 <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
#include <sound/soc.h>
|
||||
#include <plat/audio.h>
|
||||
#include "kirkwood-i2s.h"
|
||||
#include "kirkwood.h"
|
||||
|
||||
#define DRV_NAME "kirkwood-i2s"
|
||||
|
||||
#define KIRKWOOD_I2S_RATES \
|
||||
(SNDRV_PCM_RATE_44100 | \
|
||||
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000)
|
||||
#define KIRKWOOD_I2S_FORMATS \
|
||||
(SNDRV_PCM_FMTBIT_S16_LE | \
|
||||
SNDRV_PCM_FMTBIT_S24_LE | \
|
||||
SNDRV_PCM_FMTBIT_S32_LE)
|
||||
|
||||
|
||||
struct snd_soc_dai kirkwood_i2s_dai;
|
||||
static struct kirkwood_dma_data *priv;
|
||||
|
||||
static int kirkwood_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
|
||||
unsigned int fmt)
|
||||
{
|
||||
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;
|
||||
} while (value == 0);
|
||||
}
|
||||
|
||||
static int kirkwood_i2s_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
unsigned int i2s_reg, reg;
|
||||
unsigned long i2s_value, value;
|
||||
|
||||
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||||
i2s_reg = KIRKWOOD_I2S_PLAYCTL;
|
||||
reg = KIRKWOOD_PLAYCTL;
|
||||
} else {
|
||||
i2s_reg = KIRKWOOD_I2S_RECCTL;
|
||||
reg = KIRKWOOD_RECCTL;
|
||||
}
|
||||
|
||||
/* set dco conf */
|
||||
kirkwood_set_dco(priv->io, params_rate(params));
|
||||
|
||||
i2s_value = readl(priv->io+i2s_reg);
|
||||
i2s_value &= ~KIRKWOOD_I2S_CTL_SIZE_MASK;
|
||||
|
||||
value = readl(priv->io+reg);
|
||||
value &= ~KIRKWOOD_PLAYCTL_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;
|
||||
value |= KIRKWOOD_PLAYCTL_SIZE_16_C;
|
||||
break;
|
||||
/*
|
||||
* doesn't work... S20_3LE != kirkwood 20bit format ?
|
||||
*
|
||||
case SNDRV_PCM_FORMAT_S20_3LE:
|
||||
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_20;
|
||||
value |= KIRKWOOD_PLAYCTL_SIZE_20;
|
||||
break;
|
||||
*/
|
||||
case SNDRV_PCM_FORMAT_S24_LE:
|
||||
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_24;
|
||||
value |= KIRKWOOD_PLAYCTL_SIZE_24;
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S32_LE:
|
||||
i2s_value |= KIRKWOOD_I2S_CTL_SIZE_32;
|
||||
value |= KIRKWOOD_PLAYCTL_SIZE_32;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
writel(i2s_value, priv->io+i2s_reg);
|
||||
writel(value, priv->io+reg);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int kirkwood_i2s_play_trigger(struct snd_pcm_substream *substream,
|
||||
int cmd, struct snd_soc_dai *dai)
|
||||
{
|
||||
unsigned long value;
|
||||
|
||||
/*
|
||||
* specs says KIRKWOOD_PLAYCTL must be read 2 times before
|
||||
* changing it. So read 1 time here and 1 later.
|
||||
*/
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
/* stop audio, enable interrupts */
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value |= KIRKWOOD_PLAYCTL_PAUSE;
|
||||
writel(value, priv->io + KIRKWOOD_PLAYCTL);
|
||||
|
||||
value = readl(priv->io + KIRKWOOD_INT_MASK);
|
||||
value |= KIRKWOOD_INT_CAUSE_PLAY_BYTES;
|
||||
writel(value, priv->io + KIRKWOOD_INT_MASK);
|
||||
|
||||
/* configure audio & enable i2s playback */
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value &= ~KIRKWOOD_PLAYCTL_BURST_MASK;
|
||||
value &= ~(KIRKWOOD_PLAYCTL_PAUSE|KIRKWOOD_PLAYCTL_SPDIF_EN);
|
||||
|
||||
if (priv->burst == 32)
|
||||
value |= KIRKWOOD_PLAYCTL_BURST_32;
|
||||
else
|
||||
value |= KIRKWOOD_PLAYCTL_BURST_128;
|
||||
value |= KIRKWOOD_PLAYCTL_I2S_EN;
|
||||
writel(value, priv->io + KIRKWOOD_PLAYCTL);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
/* stop audio, disable interrupts */
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value |= KIRKWOOD_PLAYCTL_PAUSE;
|
||||
writel(value, 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 */
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value &= ~(KIRKWOOD_PLAYCTL_I2S_EN | KIRKWOOD_PLAYCTL_SPDIF_EN);
|
||||
writel(value, priv->io + KIRKWOOD_PLAYCTL);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||||
case SNDRV_PCM_TRIGGER_SUSPEND:
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value |= KIRKWOOD_PLAYCTL_PAUSE;
|
||||
writel(value, priv->io + KIRKWOOD_PLAYCTL);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_RESUME:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||||
value = readl(priv->io + KIRKWOOD_PLAYCTL);
|
||||
value &= ~KIRKWOOD_PLAYCTL_PAUSE;
|
||||
writel(value, 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)
|
||||
{
|
||||
unsigned long value;
|
||||
|
||||
value = readl(priv->io + KIRKWOOD_RECCTL);
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
/* stop audio, enable interrupts */
|
||||
value = readl(priv->io + KIRKWOOD_RECCTL);
|
||||
value |= KIRKWOOD_RECCTL_PAUSE;
|
||||
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);
|
||||
|
||||
/* configure audio & enable i2s record */
|
||||
value = readl(priv->io + KIRKWOOD_RECCTL);
|
||||
value &= ~KIRKWOOD_RECCTL_BURST_MASK;
|
||||
value &= ~KIRKWOOD_RECCTL_MONO;
|
||||
value &= ~(KIRKWOOD_RECCTL_PAUSE | KIRKWOOD_RECCTL_SPDIF_EN);
|
||||
|
||||
if (priv->burst == 32)
|
||||
value |= KIRKWOOD_RECCTL_BURST_32;
|
||||
else
|
||||
value |= KIRKWOOD_RECCTL_BURST_128;
|
||||
value |= KIRKWOOD_RECCTL_I2S_EN;
|
||||
|
||||
writel(value, priv->io + KIRKWOOD_RECCTL);
|
||||
break;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
/* stop audio, disable interrupts */
|
||||
value = readl(priv->io + KIRKWOOD_RECCTL);
|
||||
value |= KIRKWOOD_RECCTL_PAUSE;
|
||||
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_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
|
||||
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;
|
||||
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;
|
||||
writel(value, priv->io + KIRKWOOD_RECCTL);
|
||||
break;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
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_probe(struct platform_device *pdev,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
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_I2S_EN|KIRKWOOD_PLAYCTL_SPDIF_EN);
|
||||
writel(value, priv->io + KIRKWOOD_PLAYCTL);
|
||||
|
||||
value = readl(priv->io + KIRKWOOD_RECCTL);
|
||||
value &= ~(KIRKWOOD_RECCTL_I2S_EN | KIRKWOOD_RECCTL_SPDIF_EN);
|
||||
writel(value, priv->io + KIRKWOOD_RECCTL);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
static void kirkwood_i2s_remove(struct platform_device *pdev,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
}
|
||||
|
||||
static struct snd_soc_dai_ops kirkwood_i2s_dai_ops = {
|
||||
.trigger = kirkwood_i2s_trigger,
|
||||
.hw_params = kirkwood_i2s_hw_params,
|
||||
.set_fmt = kirkwood_i2s_set_fmt,
|
||||
};
|
||||
|
||||
|
||||
struct snd_soc_dai kirkwood_i2s_dai = {
|
||||
.name = DRV_NAME,
|
||||
.id = 0,
|
||||
.probe = kirkwood_i2s_probe,
|
||||
.remove = kirkwood_i2s_remove,
|
||||
.playback = {
|
||||
.channels_min = 1,
|
||||
.channels_max = 2,
|
||||
.rates = KIRKWOOD_I2S_RATES,
|
||||
.formats = KIRKWOOD_I2S_FORMATS,},
|
||||
.capture = {
|
||||
.channels_min = 1,
|
||||
.channels_max = 2,
|
||||
.rates = KIRKWOOD_I2S_RATES,
|
||||
.formats = KIRKWOOD_I2S_FORMATS,},
|
||||
.ops = &kirkwood_i2s_dai_ops,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(kirkwood_i2s_dai);
|
||||
|
||||
static __devinit int kirkwood_i2s_dev_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct resource *mem;
|
||||
struct kirkwood_asoc_platform_data *data =
|
||||
pdev->dev.platform_data;
|
||||
int err;
|
||||
|
||||
priv = kzalloc(sizeof(struct kirkwood_dma_data), GFP_KERNEL);
|
||||
if (!priv) {
|
||||
dev_err(&pdev->dev, "allocation failed\n");
|
||||
err = -ENOMEM;
|
||||
goto error;
|
||||
}
|
||||
|
||||
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!mem) {
|
||||
dev_err(&pdev->dev, "platform_get_resource failed\n");
|
||||
err = -ENXIO;
|
||||
goto err_alloc;
|
||||
}
|
||||
|
||||
priv->mem = request_mem_region(mem->start, SZ_16K, DRV_NAME);
|
||||
if (!priv->mem) {
|
||||
dev_err(&pdev->dev, "request_mem_region failed\n");
|
||||
err = -EBUSY;
|
||||
goto error;
|
||||
}
|
||||
|
||||
priv->io = ioremap(priv->mem->start, SZ_16K);
|
||||
if (!priv->io) {
|
||||
dev_err(&pdev->dev, "ioremap failed\n");
|
||||
err = -ENOMEM;
|
||||
goto err_iomem;
|
||||
}
|
||||
|
||||
priv->irq = platform_get_irq(pdev, 0);
|
||||
if (priv->irq <= 0) {
|
||||
dev_err(&pdev->dev, "platform_get_irq failed\n");
|
||||
err = -ENXIO;
|
||||
goto err_ioremap;
|
||||
}
|
||||
|
||||
if (!data || !data->dram) {
|
||||
dev_err(&pdev->dev, "no platform data ?!\n");
|
||||
err = -EINVAL;
|
||||
goto err_ioremap;
|
||||
}
|
||||
|
||||
priv->dram = data->dram;
|
||||
priv->burst = data->burst;
|
||||
|
||||
kirkwood_i2s_dai.capture.dma_data = priv;
|
||||
kirkwood_i2s_dai.playback.dma_data = priv;
|
||||
|
||||
return snd_soc_register_dai(&kirkwood_i2s_dai);
|
||||
|
||||
err_ioremap:
|
||||
iounmap(priv->io);
|
||||
err_iomem:
|
||||
release_mem_region(priv->mem->start, SZ_16K);
|
||||
err_alloc:
|
||||
kfree(priv);
|
||||
error:
|
||||
return err;
|
||||
}
|
||||
|
||||
static __devexit int kirkwood_i2s_dev_remove(struct platform_device *pdev)
|
||||
{
|
||||
if (priv) {
|
||||
iounmap(priv->io);
|
||||
release_mem_region(priv->mem->start, SZ_16K);
|
||||
kfree(priv);
|
||||
}
|
||||
snd_soc_unregister_dai(&kirkwood_i2s_dai);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver kirkwood_i2s_driver = {
|
||||
.probe = kirkwood_i2s_dev_probe,
|
||||
.remove = kirkwood_i2s_dev_remove,
|
||||
.driver = {
|
||||
.name = DRV_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init kirkwood_i2s_init(void)
|
||||
{
|
||||
return platform_driver_register(&kirkwood_i2s_driver);
|
||||
}
|
||||
module_init(kirkwood_i2s_init);
|
||||
|
||||
static void __exit kirkwood_i2s_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&kirkwood_i2s_driver);
|
||||
}
|
||||
module_exit(kirkwood_i2s_exit);
|
||||
|
||||
/* Module information */
|
||||
MODULE_AUTHOR("Arnaud Patard, <apatard@mandriva.com>");
|
||||
MODULE_DESCRIPTION("Kirkwood I2S SoC Interface");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("platform:kirkwood-i2s");
|
||||
|
|
@ -0,0 +1,17 @@
|
|||
/*
|
||||
* kirkwood-i2s.h
|
||||
*
|
||||
* (c) 2010 Arnaud Patard <apatard@mandriva.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; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*/
|
||||
|
||||
#ifndef _KIRKWOOD_I2S_H
|
||||
#define _KIRKWOOD_I2S_H
|
||||
|
||||
extern struct snd_soc_dai kirkwood_i2s_dai;
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,126 @@
|
|||
/*
|
||||
* kirkwood.h
|
||||
*
|
||||
* (c) 2010 Arnaud Patard <apatard@mandriva.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; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*/
|
||||
|
||||
#ifndef _KIRKWOOD_AUDIO_H
|
||||
#define _KIRKWOOD_AUDIO_H
|
||||
|
||||
#define KIRKWOOD_RECORD_WIN 0
|
||||
#define KIRKWOOD_PLAYBACK_WIN 1
|
||||
#define KIRKWOOD_MAX_AUDIO_WIN 2
|
||||
|
||||
#define KIRKWOOD_AUDIO_WIN_BASE_REG(win) (0xA00 + ((win)<<3))
|
||||
#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win) (0xA04 + ((win)<<3))
|
||||
|
||||
|
||||
#define KIRKWOOD_RECCTL 0x1000
|
||||
#define KIRKWOOD_RECCTL_SPDIF_EN (1<<11)
|
||||
#define KIRKWOOD_RECCTL_I2S_EN (1<<10)
|
||||
#define KIRKWOOD_RECCTL_PAUSE (1<<9)
|
||||
#define KIRKWOOD_RECCTL_MUTE (1<<8)
|
||||
#define KIRKWOOD_RECCTL_BURST_MASK (3<<5)
|
||||
#define KIRKWOOD_RECCTL_BURST_128 (2<<5)
|
||||
#define KIRKWOOD_RECCTL_BURST_32 (1<<5)
|
||||
#define KIRKWOOD_RECCTL_MONO (1<<4)
|
||||
#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT (1<<3)
|
||||
#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT (0<<3)
|
||||
#define KIRKWOOD_RECCTL_SIZE_MASK (7<<0)
|
||||
#define KIRKWOOD_RECCTL_SIZE_16 (7<<0)
|
||||
#define KIRKWOOD_RECCTL_SIZE_16_C (3<<0)
|
||||
#define KIRKWOOD_RECCTL_SIZE_20 (2<<0)
|
||||
#define KIRKWOOD_RECCTL_SIZE_24 (1<<0)
|
||||
#define KIRKWOOD_RECCTL_SIZE_32 (0<<0)
|
||||
|
||||
#define KIRKWOOD_REC_BUF_ADDR 0x1004
|
||||
#define KIRKWOOD_REC_BUF_SIZE 0x1008
|
||||
#define KIRKWOOD_REC_BYTE_COUNT 0x100C
|
||||
|
||||
#define KIRKWOOD_PLAYCTL 0x1100
|
||||
#define KIRKWOOD_PLAYCTL_PLAY_BUSY (1<<16)
|
||||
#define KIRKWOOD_PLAYCTL_BURST_MASK (3<<11)
|
||||
#define KIRKWOOD_PLAYCTL_BURST_128 (2<<11)
|
||||
#define KIRKWOOD_PLAYCTL_BURST_32 (1<<11)
|
||||
#define KIRKWOOD_PLAYCTL_PAUSE (1<<9)
|
||||
#define KIRKWOOD_PLAYCTL_SPDIF_MUTE (1<<8)
|
||||
#define KIRKWOOD_PLAYCTL_I2S_MUTE (1<<7)
|
||||
#define KIRKWOOD_PLAYCTL_SPDIF_EN (1<<4)
|
||||
#define KIRKWOOD_PLAYCTL_I2S_EN (1<<3)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_MASK (7<<0)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_16 (7<<0)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_16_C (3<<0)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_20 (2<<0)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_24 (1<<0)
|
||||
#define KIRKWOOD_PLAYCTL_SIZE_32 (0<<0)
|
||||
|
||||
#define KIRKWOOD_PLAY_BUF_ADDR 0x1104
|
||||
#define KIRKWOOD_PLAY_BUF_SIZE 0x1108
|
||||
#define KIRKWOOD_PLAY_BYTE_COUNT 0x110C
|
||||
|
||||
#define KIRKWOOD_DCO_CTL 0x1204
|
||||
#define KIRKWOOD_DCO_CTL_OFFSET_MASK (0xFFF<<2)
|
||||
#define KIRKWOOD_DCO_CTL_OFFSET_0 (0x800<<2)
|
||||
#define KIRKWOOD_DCO_CTL_FREQ_MASK (3<<0)
|
||||
#define KIRKWOOD_DCO_CTL_FREQ_11 (0<<0)
|
||||
#define KIRKWOOD_DCO_CTL_FREQ_12 (1<<0)
|
||||
#define KIRKWOOD_DCO_CTL_FREQ_24 (2<<0)
|
||||
|
||||
#define KIRKWOOD_DCO_SPCR_STATUS 0x120c
|
||||
#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK (1<<16)
|
||||
|
||||
#define KIRKWOOD_ERR_CAUSE 0x1300
|
||||
#define KIRKWOOD_ERR_MASK 0x1304
|
||||
|
||||
#define KIRKWOOD_INT_CAUSE 0x1308
|
||||
#define KIRKWOOD_INT_MASK 0x130C
|
||||
#define KIRKWOOD_INT_CAUSE_PLAY_BYTES (1<<14)
|
||||
#define KIRKWOOD_INT_CAUSE_REC_BYTES (1<<13)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END (1<<7)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q (1<<6)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF (1<<5)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q (1<<4)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_REC_END (1<<3)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q (1<<2)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF (1<<1)
|
||||
#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q (1<<0)
|
||||
|
||||
#define KIRKWOOD_REC_BYTE_INT_COUNT 0x1310
|
||||
#define KIRKWOOD_PLAY_BYTE_INT_COUNT 0x1314
|
||||
#define KIRKWOOD_BYTE_INT_COUNT_MASK 0xffffff
|
||||
|
||||
#define KIRKWOOD_I2S_PLAYCTL 0x2508
|
||||
#define KIRKWOOD_I2S_RECCTL 0x2408
|
||||
#define KIRKWOOD_I2S_CTL_JUST_MASK (0xf<<26)
|
||||
#define KIRKWOOD_I2S_CTL_LJ (0<<26)
|
||||
#define KIRKWOOD_I2S_CTL_I2S (5<<26)
|
||||
#define KIRKWOOD_I2S_CTL_RJ (8<<26)
|
||||
#define KIRKWOOD_I2S_CTL_SIZE_MASK (3<<30)
|
||||
#define KIRKWOOD_I2S_CTL_SIZE_16 (3<<30)
|
||||
#define KIRKWOOD_I2S_CTL_SIZE_20 (2<<30)
|
||||
#define KIRKWOOD_I2S_CTL_SIZE_24 (1<<30)
|
||||
#define KIRKWOOD_I2S_CTL_SIZE_32 (0<<30)
|
||||
|
||||
#define KIRKWOOD_AUDIO_BUF_MAX (16*1024*1024)
|
||||
|
||||
/* Theses values come from the marvell alsa driver */
|
||||
/* need to find where they come from */
|
||||
#define KIRKWOOD_SND_MIN_PERIODS 8
|
||||
#define KIRKWOOD_SND_MAX_PERIODS 16
|
||||
#define KIRKWOOD_SND_MIN_PERIOD_BYTES 0x4000
|
||||
#define KIRKWOOD_SND_MAX_PERIOD_BYTES 0x4000
|
||||
|
||||
struct kirkwood_dma_data {
|
||||
struct resource *mem;
|
||||
void __iomem *io;
|
||||
int irq;
|
||||
int burst;
|
||||
struct mbus_dram_target_info *dram;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue