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ASoC: Main rewite of the mpc5200 audio DMA code
Rewrite the mpc5200 audio DMA code to support both I2S and AC97. Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
parent
0f89bdcac6
commit
dbcc347562
5 changed files with 341 additions and 388 deletions
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@ -25,7 +25,6 @@ config SND_SOC_MPC8610_HPCD
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config SND_SOC_MPC5200_I2S
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tristate "Freescale MPC5200 PSC in I2S mode driver"
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depends on PPC_MPC52xx && PPC_BESTCOMM
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select SND_SOC_OF_SIMPLE
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select SND_MPC52xx_DMA
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select PPC_BESTCOMM_GEN_BD
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help
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@ -3,23 +3,13 @@
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* ALSA SoC Platform driver
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*
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* Copyright (C) 2008 Secret Lab Technologies Ltd.
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* Copyright (C) 2009 Jon Smirl, Digispeaker
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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/interrupt.h>
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#include <linux/device.h>
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#include <linux/delay.h>
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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#include <linux/dma-mapping.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <sound/soc-of-simple.h>
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#include <sysdev/bestcomm/bestcomm.h>
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#include <sysdev/bestcomm/gen_bd.h>
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@ -27,10 +17,6 @@
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#include "mpc5200_dma.h"
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MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
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MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
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MODULE_LICENSE("GPL");
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/*
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* Interrupt handlers
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*/
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@ -50,7 +36,7 @@ static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
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if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
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psc_dma->stats.overrun_count++;
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out_8(®s->command, 4 << 4); /* reset the error status */
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out_8(®s->command, MPC52xx_PSC_RST_ERR_STAT);
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return IRQ_HANDLED;
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}
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@ -81,21 +67,36 @@ static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
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s->period_next_pt = s->period_start;
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}
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static void psc_dma_bcom_enqueue_tx(struct psc_dma_stream *s)
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{
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while (s->appl_ptr < s->runtime->control->appl_ptr) {
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if (bcom_queue_full(s->bcom_task))
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return;
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s->appl_ptr += s->period_size;
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psc_dma_bcom_enqueue_next_buffer(s);
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}
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}
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/* Bestcomm DMA irq handler */
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static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
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static irqreturn_t psc_dma_bcom_irq_tx(int irq, void *_psc_dma_stream)
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{
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struct psc_dma_stream *s = _psc_dma_stream;
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spin_lock(&s->psc_dma->lock);
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/* For each finished period, dequeue the completed period buffer
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* and enqueue a new one in it's place. */
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while (bcom_buffer_done(s->bcom_task)) {
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bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
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s->period_current_pt += s->period_bytes;
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if (s->period_current_pt >= s->period_end)
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s->period_current_pt = s->period_start;
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psc_dma_bcom_enqueue_next_buffer(s);
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bcom_enable(s->bcom_task);
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}
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psc_dma_bcom_enqueue_tx(s);
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spin_unlock(&s->psc_dma->lock);
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/* If the stream is active, then also inform the PCM middle layer
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* of the period finished event. */
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@ -105,49 +106,33 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
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return IRQ_HANDLED;
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}
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/**
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* psc_dma_startup: create a new substream
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*
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* This is the first function called when a stream is opened.
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*
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* If this is the first stream open, then grab the IRQ and program most of
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* the PSC registers.
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*/
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int psc_dma_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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static irqreturn_t psc_dma_bcom_irq_rx(int irq, void *_psc_dma_stream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
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int rc;
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struct psc_dma_stream *s = _psc_dma_stream;
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dev_dbg(psc_dma->dev, "psc_dma_startup(substream=%p)\n", substream);
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spin_lock(&s->psc_dma->lock);
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/* For each finished period, dequeue the completed period buffer
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* and enqueue a new one in it's place. */
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while (bcom_buffer_done(s->bcom_task)) {
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bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
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if (!psc_dma->playback.active &&
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!psc_dma->capture.active) {
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/* Setup the IRQs */
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rc = request_irq(psc_dma->irq, &psc_dma_status_irq, IRQF_SHARED,
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"psc-dma-status", psc_dma);
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rc |= request_irq(psc_dma->capture.irq,
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&psc_dma_bcom_irq, IRQF_SHARED,
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"psc-dma-capture", &psc_dma->capture);
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rc |= request_irq(psc_dma->playback.irq,
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&psc_dma_bcom_irq, IRQF_SHARED,
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"psc-dma-playback", &psc_dma->playback);
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if (rc) {
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free_irq(psc_dma->irq, psc_dma);
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free_irq(psc_dma->capture.irq,
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&psc_dma->capture);
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free_irq(psc_dma->playback.irq,
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&psc_dma->playback);
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return -ENODEV;
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}
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s->period_current_pt += s->period_bytes;
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if (s->period_current_pt >= s->period_end)
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s->period_current_pt = s->period_start;
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psc_dma_bcom_enqueue_next_buffer(s);
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}
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spin_unlock(&s->psc_dma->lock);
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return 0;
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/* If the stream is active, then also inform the PCM middle layer
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* of the period finished event. */
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if (s->active)
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snd_pcm_period_elapsed(s->stream);
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return IRQ_HANDLED;
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}
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int psc_dma_hw_free(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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static int psc_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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@ -159,8 +144,7 @@ int psc_dma_hw_free(struct snd_pcm_substream *substream,
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* This function is called by ALSA to start, stop, pause, and resume the DMA
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* transfer of data.
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*/
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int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
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struct snd_soc_dai *dai)
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static int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
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@ -168,8 +152,8 @@ int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
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struct psc_dma_stream *s;
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struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
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u16 imr;
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u8 psc_cmd;
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unsigned long flags;
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int i;
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
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s = &psc_dma->capture;
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@ -189,68 +173,48 @@ int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
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(s->period_bytes * runtime->periods);
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s->period_next_pt = s->period_start;
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s->period_current_pt = s->period_start;
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s->period_size = runtime->period_size;
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s->active = 1;
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/* First; reset everything */
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/* track appl_ptr so that we have a better chance of detecting
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* end of stream and not over running it.
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*/
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s->runtime = runtime;
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s->appl_ptr = s->runtime->control->appl_ptr -
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(runtime->period_size * runtime->periods);
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/* Fill up the bestcomm bd queue and enable DMA.
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* This will begin filling the PSC's fifo.
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*/
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spin_lock_irqsave(&psc_dma->lock, flags);
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
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out_8(®s->command, MPC52xx_PSC_RST_RX);
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out_8(®s->command, MPC52xx_PSC_RST_ERR_STAT);
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bcom_gen_bd_rx_reset(s->bcom_task);
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for (i = 0; i < runtime->periods; i++)
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if (!bcom_queue_full(s->bcom_task))
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psc_dma_bcom_enqueue_next_buffer(s);
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} else {
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out_8(®s->command, MPC52xx_PSC_RST_TX);
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out_8(®s->command, MPC52xx_PSC_RST_ERR_STAT);
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bcom_gen_bd_tx_reset(s->bcom_task);
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psc_dma_bcom_enqueue_tx(s);
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}
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/* Next, fill up the bestcomm bd queue and enable DMA.
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* This will begin filling the PSC's fifo. */
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
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bcom_gen_bd_rx_reset(s->bcom_task);
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else
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bcom_gen_bd_tx_reset(s->bcom_task);
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while (!bcom_queue_full(s->bcom_task))
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psc_dma_bcom_enqueue_next_buffer(s);
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bcom_enable(s->bcom_task);
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/* Due to errata in the dma mode; need to line up enabling
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* the transmitter with a transition on the frame sync
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* line */
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spin_lock_irqsave(&psc_dma->lock, flags);
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/* first make sure it is low */
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while ((in_8(®s->ipcr_acr.ipcr) & 0x80) != 0)
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;
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/* then wait for the transition to high */
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while ((in_8(®s->ipcr_acr.ipcr) & 0x80) == 0)
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;
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/* Finally, enable the PSC.
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* Receiver must always be enabled; even when we only want
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* transmit. (see 15.3.2.3 of MPC5200B User's Guide) */
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psc_cmd = MPC52xx_PSC_RX_ENABLE;
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if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK)
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psc_cmd |= MPC52xx_PSC_TX_ENABLE;
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out_8(®s->command, psc_cmd);
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spin_unlock_irqrestore(&psc_dma->lock, flags);
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out_8(®s->command, MPC52xx_PSC_RST_ERR_STAT);
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break;
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case SNDRV_PCM_TRIGGER_STOP:
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/* Turn off the PSC */
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s->active = 0;
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
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if (!psc_dma->playback.active) {
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out_8(®s->command, 2 << 4); /* reset rx */
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out_8(®s->command, 3 << 4); /* reset tx */
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out_8(®s->command, 4 << 4); /* reset err */
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}
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} else {
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out_8(®s->command, 3 << 4); /* reset tx */
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out_8(®s->command, 4 << 4); /* reset err */
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if (!psc_dma->capture.active)
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out_8(®s->command, 2 << 4); /* reset rx */
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}
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spin_lock_irqsave(&psc_dma->lock, flags);
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bcom_disable(s->bcom_task);
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while (!bcom_queue_empty(s->bcom_task))
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bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
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bcom_gen_bd_rx_reset(s->bcom_task);
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else
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bcom_gen_bd_tx_reset(s->bcom_task);
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spin_unlock_irqrestore(&psc_dma->lock, flags);
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break;
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@ -265,44 +229,11 @@ int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
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imr |= MPC52xx_PSC_IMR_TXEMP;
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if (psc_dma->capture.active)
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imr |= MPC52xx_PSC_IMR_ORERR;
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out_be16(®s->isr_imr.imr, imr);
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out_be16(®s->isr_imr.imr, psc_dma->imr | imr);
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return 0;
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}
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/**
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* psc_dma_shutdown: shutdown the data transfer on a stream
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*
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* Shutdown the PSC if there are no other substreams open.
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*/
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void psc_dma_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
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dev_dbg(psc_dma->dev, "psc_dma_shutdown(substream=%p)\n", substream);
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/*
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* If this is the last active substream, disable the PSC and release
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* the IRQ.
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*/
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if (!psc_dma->playback.active &&
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!psc_dma->capture.active) {
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/* Disable all interrupts and reset the PSC */
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out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
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out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset tx */
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out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset rx */
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out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
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out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
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/* Release irqs */
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free_irq(psc_dma->irq, psc_dma);
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free_irq(psc_dma->capture.irq, &psc_dma->capture);
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free_irq(psc_dma->playback.irq, &psc_dma->playback);
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}
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}
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/* ---------------------------------------------------------------------
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* The PSC DMA 'ASoC platform' driver
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@ -312,62 +243,78 @@ void psc_dma_shutdown(struct snd_pcm_substream *substream,
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* interaction with the attached codec
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*/
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static const struct snd_pcm_hardware psc_dma_pcm_hardware = {
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static const struct snd_pcm_hardware psc_dma_hardware = {
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.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
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SNDRV_PCM_INFO_BATCH,
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.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
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SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE,
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SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE,
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.rate_min = 8000,
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.rate_max = 48000,
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.channels_min = 2,
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.channels_min = 1,
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.channels_max = 2,
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.period_bytes_max = 1024 * 1024,
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.period_bytes_min = 32,
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.periods_min = 2,
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.periods_max = 256,
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.buffer_bytes_max = 2 * 1024 * 1024,
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.fifo_size = 0,
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.fifo_size = 512,
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};
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static int psc_dma_pcm_open(struct snd_pcm_substream *substream)
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static int psc_dma_open(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 *rtd = substream->private_data;
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struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
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struct psc_dma_stream *s;
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int rc;
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dev_dbg(psc_dma->dev, "psc_dma_pcm_open(substream=%p)\n", substream);
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dev_dbg(psc_dma->dev, "psc_dma_open(substream=%p)\n", substream);
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
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s = &psc_dma->capture;
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else
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s = &psc_dma->playback;
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snd_soc_set_runtime_hwparams(substream, &psc_dma_pcm_hardware);
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snd_soc_set_runtime_hwparams(substream, &psc_dma_hardware);
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rc = snd_pcm_hw_constraint_integer(runtime,
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SNDRV_PCM_HW_PARAM_PERIODS);
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if (rc < 0) {
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dev_err(substream->pcm->card->dev, "invalid buffer size\n");
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return rc;
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}
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s->stream = substream;
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return 0;
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}
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static int psc_dma_pcm_close(struct snd_pcm_substream *substream)
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static int psc_dma_close(struct snd_pcm_substream *substream)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
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struct psc_dma_stream *s;
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dev_dbg(psc_dma->dev, "psc_dma_pcm_close(substream=%p)\n", substream);
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dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream);
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if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
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s = &psc_dma->capture;
|
||||
else
|
||||
s = &psc_dma->playback;
|
||||
|
||||
if (!psc_dma->playback.active &&
|
||||
!psc_dma->capture.active) {
|
||||
|
||||
/* Disable all interrupts and reset the PSC */
|
||||
out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr);
|
||||
out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
|
||||
}
|
||||
s->stream = NULL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t
|
||||
psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
|
||||
psc_dma_pointer(struct snd_pcm_substream *substream)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||||
struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
|
||||
|
@ -384,60 +331,78 @@ psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
|
|||
return bytes_to_frames(substream->runtime, count);
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops psc_dma_pcm_ops = {
|
||||
.open = psc_dma_pcm_open,
|
||||
.close = psc_dma_pcm_close,
|
||||
static int
|
||||
psc_dma_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params)
|
||||
{
|
||||
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops psc_dma_ops = {
|
||||
.open = psc_dma_open,
|
||||
.close = psc_dma_close,
|
||||
.hw_free = psc_dma_hw_free,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.pointer = psc_dma_pcm_pointer,
|
||||
.pointer = psc_dma_pointer,
|
||||
.trigger = psc_dma_trigger,
|
||||
.hw_params = psc_dma_hw_params,
|
||||
};
|
||||
|
||||
static u64 psc_dma_pcm_dmamask = 0xffffffff;
|
||||
static int psc_dma_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
|
||||
static u64 psc_dma_dmamask = 0xffffffff;
|
||||
static int psc_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
|
||||
struct snd_pcm *pcm)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = pcm->private_data;
|
||||
size_t size = psc_dma_pcm_hardware.buffer_bytes_max;
|
||||
struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
|
||||
size_t size = psc_dma_hardware.buffer_bytes_max;
|
||||
int rc = 0;
|
||||
|
||||
dev_dbg(rtd->socdev->dev, "psc_dma_pcm_new(card=%p, dai=%p, pcm=%p)\n",
|
||||
dev_dbg(rtd->socdev->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
|
||||
card, dai, pcm);
|
||||
|
||||
if (!card->dev->dma_mask)
|
||||
card->dev->dma_mask = &psc_dma_pcm_dmamask;
|
||||
card->dev->dma_mask = &psc_dma_dmamask;
|
||||
if (!card->dev->coherent_dma_mask)
|
||||
card->dev->coherent_dma_mask = 0xffffffff;
|
||||
|
||||
if (pcm->streams[0].substream) {
|
||||
rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
|
||||
&pcm->streams[0].substream->dma_buffer);
|
||||
rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->card->dev,
|
||||
size, &pcm->streams[0].substream->dma_buffer);
|
||||
if (rc)
|
||||
goto playback_alloc_err;
|
||||
}
|
||||
|
||||
if (pcm->streams[1].substream) {
|
||||
rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
|
||||
&pcm->streams[1].substream->dma_buffer);
|
||||
rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->card->dev,
|
||||
size, &pcm->streams[1].substream->dma_buffer);
|
||||
if (rc)
|
||||
goto capture_alloc_err;
|
||||
}
|
||||
|
||||
if (rtd->socdev->card->codec->ac97)
|
||||
rtd->socdev->card->codec->ac97->private_data = psc_dma;
|
||||
|
||||
return 0;
|
||||
|
||||
capture_alloc_err:
|
||||
if (pcm->streams[0].substream)
|
||||
snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
|
||||
|
||||
playback_alloc_err:
|
||||
dev_err(card->dev, "Cannot allocate buffer(s)\n");
|
||||
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
static void psc_dma_pcm_free(struct snd_pcm *pcm)
|
||||
static void psc_dma_free(struct snd_pcm *pcm)
|
||||
{
|
||||
struct snd_soc_pcm_runtime *rtd = pcm->private_data;
|
||||
struct snd_pcm_substream *substream;
|
||||
int stream;
|
||||
|
||||
dev_dbg(rtd->socdev->dev, "psc_dma_pcm_free(pcm=%p)\n", pcm);
|
||||
dev_dbg(rtd->socdev->dev, "psc_dma_free(pcm=%p)\n", pcm);
|
||||
|
||||
for (stream = 0; stream < 2; stream++) {
|
||||
substream = pcm->streams[stream].substream;
|
||||
|
@ -449,10 +414,151 @@ static void psc_dma_pcm_free(struct snd_pcm *pcm)
|
|||
}
|
||||
}
|
||||
|
||||
struct snd_soc_platform psc_dma_pcm_soc_platform = {
|
||||
struct snd_soc_platform mpc5200_audio_dma_platform = {
|
||||
.name = "mpc5200-psc-audio",
|
||||
.pcm_ops = &psc_dma_pcm_ops,
|
||||
.pcm_new = &psc_dma_pcm_new,
|
||||
.pcm_free = &psc_dma_pcm_free,
|
||||
.pcm_ops = &psc_dma_ops,
|
||||
.pcm_new = &psc_dma_new,
|
||||
.pcm_free = &psc_dma_free,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(mpc5200_audio_dma_platform);
|
||||
|
||||
int mpc5200_audio_dma_create(struct of_device *op)
|
||||
{
|
||||
phys_addr_t fifo;
|
||||
struct psc_dma *psc_dma;
|
||||
struct resource res;
|
||||
int size, irq, rc;
|
||||
const __be32 *prop;
|
||||
void __iomem *regs;
|
||||
|
||||
/* Fetch the registers and IRQ of the PSC */
|
||||
irq = irq_of_parse_and_map(op->node, 0);
|
||||
if (of_address_to_resource(op->node, 0, &res)) {
|
||||
dev_err(&op->dev, "Missing reg property\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
regs = ioremap(res.start, 1 + res.end - res.start);
|
||||
if (!regs) {
|
||||
dev_err(&op->dev, "Could not map registers\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Allocate and initialize the driver private data */
|
||||
psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL);
|
||||
if (!psc_dma) {
|
||||
iounmap(regs);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* Get the PSC ID */
|
||||
prop = of_get_property(op->node, "cell-index", &size);
|
||||
if (!prop || size < sizeof *prop)
|
||||
return -ENODEV;
|
||||
|
||||
spin_lock_init(&psc_dma->lock);
|
||||
psc_dma->id = be32_to_cpu(*prop);
|
||||
psc_dma->irq = irq;
|
||||
psc_dma->psc_regs = regs;
|
||||
psc_dma->fifo_regs = regs + sizeof *psc_dma->psc_regs;
|
||||
psc_dma->dev = &op->dev;
|
||||
psc_dma->playback.psc_dma = psc_dma;
|
||||
psc_dma->capture.psc_dma = psc_dma;
|
||||
snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_dma->id);
|
||||
|
||||
/* Find the address of the fifo data registers and setup the
|
||||
* DMA tasks */
|
||||
fifo = res.start + offsetof(struct mpc52xx_psc, buffer.buffer_32);
|
||||
psc_dma->capture.bcom_task =
|
||||
bcom_psc_gen_bd_rx_init(psc_dma->id, 10, fifo, 512);
|
||||
psc_dma->playback.bcom_task =
|
||||
bcom_psc_gen_bd_tx_init(psc_dma->id, 10, fifo);
|
||||
if (!psc_dma->capture.bcom_task ||
|
||||
!psc_dma->playback.bcom_task) {
|
||||
dev_err(&op->dev, "Could not allocate bestcomm tasks\n");
|
||||
iounmap(regs);
|
||||
kfree(psc_dma);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Disable all interrupts and reset the PSC */
|
||||
out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr);
|
||||
/* reset receiver */
|
||||
out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_RX);
|
||||
/* reset transmitter */
|
||||
out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_TX);
|
||||
/* reset error */
|
||||
out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_RST_ERR_STAT);
|
||||
/* reset mode */
|
||||
out_8(&psc_dma->psc_regs->command, MPC52xx_PSC_SEL_MODE_REG_1);
|
||||
|
||||
/* Set up mode register;
|
||||
* First write: RxRdy (FIFO Alarm) generates rx FIFO irq
|
||||
* Second write: register Normal mode for non loopback
|
||||
*/
|
||||
out_8(&psc_dma->psc_regs->mode, 0);
|
||||
out_8(&psc_dma->psc_regs->mode, 0);
|
||||
|
||||
/* Set the TX and RX fifo alarm thresholds */
|
||||
out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
|
||||
out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
|
||||
out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
|
||||
out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
|
||||
|
||||
/* Lookup the IRQ numbers */
|
||||
psc_dma->playback.irq =
|
||||
bcom_get_task_irq(psc_dma->playback.bcom_task);
|
||||
psc_dma->capture.irq =
|
||||
bcom_get_task_irq(psc_dma->capture.bcom_task);
|
||||
|
||||
rc = request_irq(psc_dma->irq, &psc_dma_status_irq, IRQF_SHARED,
|
||||
"psc-dma-status", psc_dma);
|
||||
rc |= request_irq(psc_dma->capture.irq,
|
||||
&psc_dma_bcom_irq_rx, IRQF_SHARED,
|
||||
"psc-dma-capture", &psc_dma->capture);
|
||||
rc |= request_irq(psc_dma->playback.irq,
|
||||
&psc_dma_bcom_irq_tx, IRQF_SHARED,
|
||||
"psc-dma-playback", &psc_dma->playback);
|
||||
if (rc) {
|
||||
free_irq(psc_dma->irq, psc_dma);
|
||||
free_irq(psc_dma->capture.irq,
|
||||
&psc_dma->capture);
|
||||
free_irq(psc_dma->playback.irq,
|
||||
&psc_dma->playback);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Save what we've done so it can be found again later */
|
||||
dev_set_drvdata(&op->dev, psc_dma);
|
||||
|
||||
/* Tell the ASoC OF helpers about it */
|
||||
return snd_soc_register_platform(&mpc5200_audio_dma_platform);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(mpc5200_audio_dma_create);
|
||||
|
||||
int mpc5200_audio_dma_destroy(struct of_device *op)
|
||||
{
|
||||
struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
|
||||
|
||||
dev_dbg(&op->dev, "mpc5200_audio_dma_destroy()\n");
|
||||
|
||||
snd_soc_unregister_platform(&mpc5200_audio_dma_platform);
|
||||
|
||||
bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
|
||||
bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
|
||||
|
||||
/* Release irqs */
|
||||
free_irq(psc_dma->irq, psc_dma);
|
||||
free_irq(psc_dma->capture.irq, &psc_dma->capture);
|
||||
free_irq(psc_dma->playback.irq, &psc_dma->playback);
|
||||
|
||||
iounmap(psc_dma->psc_regs);
|
||||
kfree(psc_dma);
|
||||
dev_set_drvdata(&op->dev, NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(mpc5200_audio_dma_destroy);
|
||||
|
||||
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
|
||||
MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
|
@ -5,8 +5,10 @@
|
|||
#ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__
|
||||
#define __SOUND_SOC_FSL_MPC5200_DMA_H__
|
||||
|
||||
#define PSC_STREAM_NAME_LEN 32
|
||||
|
||||
/**
|
||||
* psc_dma_stream - Data specific to a single stream (playback or capture)
|
||||
* psc_ac97_stream - Data specific to a single stream (playback or capture)
|
||||
* @active: flag indicating if the stream is active
|
||||
* @psc_dma: pointer back to parent psc_dma data structure
|
||||
* @bcom_task: bestcomm task structure
|
||||
|
@ -17,6 +19,9 @@
|
|||
* @period_bytes: size of DMA period in bytes
|
||||
*/
|
||||
struct psc_dma_stream {
|
||||
struct snd_pcm_runtime *runtime;
|
||||
snd_pcm_uframes_t appl_ptr;
|
||||
|
||||
int active;
|
||||
struct psc_dma *psc_dma;
|
||||
struct bcom_task *bcom_task;
|
||||
|
@ -27,6 +32,7 @@ struct psc_dma_stream {
|
|||
dma_addr_t period_next_pt;
|
||||
dma_addr_t period_current_pt;
|
||||
int period_bytes;
|
||||
int period_size;
|
||||
};
|
||||
|
||||
/**
|
||||
|
@ -48,9 +54,12 @@ struct psc_dma {
|
|||
struct mpc52xx_psc_fifo __iomem *fifo_regs;
|
||||
unsigned int irq;
|
||||
struct device *dev;
|
||||
struct snd_soc_dai dai;
|
||||
spinlock_t lock;
|
||||
u32 sicr;
|
||||
uint sysclk;
|
||||
int imr;
|
||||
int id;
|
||||
unsigned int slots;
|
||||
|
||||
/* per-stream data */
|
||||
struct psc_dma_stream playback;
|
||||
|
@ -58,24 +67,14 @@ struct psc_dma {
|
|||
|
||||
/* Statistics */
|
||||
struct {
|
||||
int overrun_count;
|
||||
int underrun_count;
|
||||
unsigned long overrun_count;
|
||||
unsigned long underrun_count;
|
||||
} stats;
|
||||
};
|
||||
|
||||
int mpc5200_audio_dma_create(struct of_device *op);
|
||||
int mpc5200_audio_dma_destroy(struct of_device *op);
|
||||
|
||||
int psc_dma_startup(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai);
|
||||
|
||||
int psc_dma_hw_free(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai);
|
||||
|
||||
void psc_dma_shutdown(struct snd_pcm_substream *substream,
|
||||
struct snd_soc_dai *dai);
|
||||
|
||||
int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
|
||||
struct snd_soc_dai *dai);
|
||||
|
||||
extern struct snd_soc_platform psc_dma_pcm_soc_platform;
|
||||
extern struct snd_soc_platform mpc5200_audio_dma_platform;
|
||||
|
||||
#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
|
||||
|
|
|
@ -3,34 +3,22 @@
|
|||
* ALSA SoC Digital Audio Interface (DAI) driver
|
||||
*
|
||||
* Copyright (C) 2008 Secret Lab Technologies Ltd.
|
||||
* Copyright (C) 2009 Jon Smirl, Digispeaker
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/of_device.h>
|
||||
#include <linux/of_platform.h>
|
||||
#include <linux/dma-mapping.h>
|
||||
|
||||
#include <sound/core.h>
|
||||
#include <sound/pcm.h>
|
||||
#include <sound/pcm_params.h>
|
||||
#include <sound/initval.h>
|
||||
#include <sound/soc.h>
|
||||
#include <sound/soc-of-simple.h>
|
||||
|
||||
#include <sysdev/bestcomm/bestcomm.h>
|
||||
#include <sysdev/bestcomm/gen_bd.h>
|
||||
#include <asm/mpc52xx_psc.h>
|
||||
|
||||
#include "mpc5200_psc_i2s.h"
|
||||
#include "mpc5200_dma.h"
|
||||
|
||||
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
|
||||
MODULE_DESCRIPTION("Freescale MPC5200 PSC in I2S mode ASoC Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
/**
|
||||
* PSC_I2S_RATES: sample rates supported by the I2S
|
||||
*
|
||||
|
@ -46,8 +34,7 @@ MODULE_LICENSE("GPL");
|
|||
* PSC_I2S_FORMATS: audio formats supported by the PSC I2S mode
|
||||
*/
|
||||
#define PSC_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE | \
|
||||
SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE | \
|
||||
SNDRV_PCM_FMTBIT_S32_BE)
|
||||
SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE)
|
||||
|
||||
static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
|
@ -82,8 +69,6 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
|
|||
}
|
||||
out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);
|
||||
|
||||
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -140,16 +125,13 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
|
|||
* psc_i2s_dai_template: template CPU Digital Audio Interface
|
||||
*/
|
||||
static struct snd_soc_dai_ops psc_i2s_dai_ops = {
|
||||
.startup = psc_dma_startup,
|
||||
.hw_params = psc_i2s_hw_params,
|
||||
.hw_free = psc_dma_hw_free,
|
||||
.shutdown = psc_dma_shutdown,
|
||||
.trigger = psc_dma_trigger,
|
||||
.set_sysclk = psc_i2s_set_sysclk,
|
||||
.set_fmt = psc_i2s_set_fmt,
|
||||
};
|
||||
|
||||
static struct snd_soc_dai psc_i2s_dai_template = {
|
||||
struct snd_soc_dai psc_i2s_dai[] = {{
|
||||
.name = "I2S",
|
||||
.playback = {
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
|
@ -163,71 +145,8 @@ static struct snd_soc_dai psc_i2s_dai_template = {
|
|||
.formats = PSC_I2S_FORMATS,
|
||||
},
|
||||
.ops = &psc_i2s_dai_ops,
|
||||
};
|
||||
|
||||
/* ---------------------------------------------------------------------
|
||||
* Sysfs attributes for debugging
|
||||
*/
|
||||
|
||||
static ssize_t psc_i2s_status_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct psc_dma *psc_dma = dev_get_drvdata(dev);
|
||||
|
||||
return sprintf(buf, "status=%.4x sicr=%.8x rfnum=%i rfstat=0x%.4x "
|
||||
"tfnum=%i tfstat=0x%.4x\n",
|
||||
in_be16(&psc_dma->psc_regs->sr_csr.status),
|
||||
in_be32(&psc_dma->psc_regs->sicr),
|
||||
in_be16(&psc_dma->fifo_regs->rfnum) & 0x1ff,
|
||||
in_be16(&psc_dma->fifo_regs->rfstat),
|
||||
in_be16(&psc_dma->fifo_regs->tfnum) & 0x1ff,
|
||||
in_be16(&psc_dma->fifo_regs->tfstat));
|
||||
}
|
||||
|
||||
static int *psc_i2s_get_stat_attr(struct psc_dma *psc_dma, const char *name)
|
||||
{
|
||||
if (strcmp(name, "playback_underrun") == 0)
|
||||
return &psc_dma->stats.underrun_count;
|
||||
if (strcmp(name, "capture_overrun") == 0)
|
||||
return &psc_dma->stats.overrun_count;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static ssize_t psc_i2s_stat_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct psc_dma *psc_dma = dev_get_drvdata(dev);
|
||||
int *attrib;
|
||||
|
||||
attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
|
||||
if (!attrib)
|
||||
return 0;
|
||||
|
||||
return sprintf(buf, "%i\n", *attrib);
|
||||
}
|
||||
|
||||
static ssize_t psc_i2s_stat_store(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf,
|
||||
size_t count)
|
||||
{
|
||||
struct psc_dma *psc_dma = dev_get_drvdata(dev);
|
||||
int *attrib;
|
||||
|
||||
attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
|
||||
if (!attrib)
|
||||
return 0;
|
||||
|
||||
*attrib = simple_strtoul(buf, NULL, 0);
|
||||
return count;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(status, 0644, psc_i2s_status_show, NULL);
|
||||
static DEVICE_ATTR(playback_underrun, 0644, psc_i2s_stat_show,
|
||||
psc_i2s_stat_store);
|
||||
static DEVICE_ATTR(capture_overrun, 0644, psc_i2s_stat_show,
|
||||
psc_i2s_stat_store);
|
||||
} };
|
||||
EXPORT_SYMBOL_GPL(psc_i2s_dai);
|
||||
|
||||
/* ---------------------------------------------------------------------
|
||||
* OF platform bus binding code:
|
||||
|
@ -237,82 +156,26 @@ static DEVICE_ATTR(capture_overrun, 0644, psc_i2s_stat_show,
|
|||
static int __devinit psc_i2s_of_probe(struct of_device *op,
|
||||
const struct of_device_id *match)
|
||||
{
|
||||
phys_addr_t fifo;
|
||||
int rc;
|
||||
struct psc_dma *psc_dma;
|
||||
struct resource res;
|
||||
int size, psc_id, irq, rc;
|
||||
const __be32 *prop;
|
||||
void __iomem *regs;
|
||||
struct mpc52xx_psc __iomem *regs;
|
||||
|
||||
dev_dbg(&op->dev, "probing psc i2s device\n");
|
||||
rc = mpc5200_audio_dma_create(op);
|
||||
if (rc != 0)
|
||||
return rc;
|
||||
|
||||
/* Get the PSC ID */
|
||||
prop = of_get_property(op->node, "cell-index", &size);
|
||||
if (!prop || size < sizeof *prop)
|
||||
return -ENODEV;
|
||||
psc_id = be32_to_cpu(*prop);
|
||||
|
||||
/* Fetch the registers and IRQ of the PSC */
|
||||
irq = irq_of_parse_and_map(op->node, 0);
|
||||
if (of_address_to_resource(op->node, 0, &res)) {
|
||||
dev_err(&op->dev, "Missing reg property\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
regs = ioremap(res.start, 1 + res.end - res.start);
|
||||
if (!regs) {
|
||||
dev_err(&op->dev, "Could not map registers\n");
|
||||
return -ENODEV;
|
||||
rc = snd_soc_register_dais(psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai));
|
||||
if (rc != 0) {
|
||||
pr_err("Failed to register DAI\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Allocate and initialize the driver private data */
|
||||
psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL);
|
||||
if (!psc_dma) {
|
||||
iounmap(regs);
|
||||
return -ENOMEM;
|
||||
}
|
||||
spin_lock_init(&psc_dma->lock);
|
||||
psc_dma->irq = irq;
|
||||
psc_dma->psc_regs = regs;
|
||||
psc_dma->fifo_regs = regs + sizeof *psc_dma->psc_regs;
|
||||
psc_dma->dev = &op->dev;
|
||||
psc_dma->playback.psc_dma = psc_dma;
|
||||
psc_dma->capture.psc_dma = psc_dma;
|
||||
snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_id+1);
|
||||
|
||||
/* Fill out the CPU DAI structure */
|
||||
memcpy(&psc_dma->dai, &psc_i2s_dai_template, sizeof psc_dma->dai);
|
||||
psc_dma->dai.private_data = psc_dma;
|
||||
psc_dma->dai.name = psc_dma->name;
|
||||
psc_dma->dai.id = psc_id;
|
||||
|
||||
/* Find the address of the fifo data registers and setup the
|
||||
* DMA tasks */
|
||||
fifo = res.start + offsetof(struct mpc52xx_psc, buffer.buffer_32);
|
||||
psc_dma->capture.bcom_task =
|
||||
bcom_psc_gen_bd_rx_init(psc_id, 10, fifo, 512);
|
||||
psc_dma->playback.bcom_task =
|
||||
bcom_psc_gen_bd_tx_init(psc_id, 10, fifo);
|
||||
if (!psc_dma->capture.bcom_task ||
|
||||
!psc_dma->playback.bcom_task) {
|
||||
dev_err(&op->dev, "Could not allocate bestcomm tasks\n");
|
||||
iounmap(regs);
|
||||
kfree(psc_dma);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/* Disable all interrupts and reset the PSC */
|
||||
out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
|
||||
out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset transmitter */
|
||||
out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset receiver */
|
||||
out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
|
||||
out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
|
||||
psc_dma = dev_get_drvdata(&op->dev);
|
||||
regs = psc_dma->psc_regs;
|
||||
|
||||
/* Configure the serial interface mode; defaulting to CODEC8 mode */
|
||||
psc_dma->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
|
||||
MPC52xx_PSC_SICR_CLKPOL;
|
||||
if (of_get_property(op->node, "fsl,cellslave", NULL))
|
||||
psc_dma->sicr |= MPC52xx_PSC_SICR_CELLSLAVE |
|
||||
MPC52xx_PSC_SICR_GENCLK;
|
||||
out_be32(&psc_dma->psc_regs->sicr,
|
||||
psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);
|
||||
|
||||
|
@ -321,66 +184,37 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
|
|||
if (!of_get_property(op->node, "codec-handle", NULL))
|
||||
return 0;
|
||||
|
||||
/* Set up mode register;
|
||||
* First write: RxRdy (FIFO Alarm) generates rx FIFO irq
|
||||
* Second write: register Normal mode for non loopback
|
||||
*/
|
||||
out_8(&psc_dma->psc_regs->mode, 0);
|
||||
out_8(&psc_dma->psc_regs->mode, 0);
|
||||
/* Due to errata in the dma mode; need to line up enabling
|
||||
* the transmitter with a transition on the frame sync
|
||||
* line */
|
||||
|
||||
/* Set the TX and RX fifo alarm thresholds */
|
||||
out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
|
||||
out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
|
||||
out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
|
||||
out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
|
||||
/* first make sure it is low */
|
||||
while ((in_8(®s->ipcr_acr.ipcr) & 0x80) != 0)
|
||||
;
|
||||
/* then wait for the transition to high */
|
||||
while ((in_8(®s->ipcr_acr.ipcr) & 0x80) == 0)
|
||||
;
|
||||
/* Finally, enable the PSC.
|
||||
* Receiver must always be enabled; even when we only want
|
||||
* transmit. (see 15.3.2.3 of MPC5200B User's Guide) */
|
||||
|
||||
/* Lookup the IRQ numbers */
|
||||
psc_dma->playback.irq =
|
||||
bcom_get_task_irq(psc_dma->playback.bcom_task);
|
||||
psc_dma->capture.irq =
|
||||
bcom_get_task_irq(psc_dma->capture.bcom_task);
|
||||
|
||||
/* Save what we've done so it can be found again later */
|
||||
dev_set_drvdata(&op->dev, psc_dma);
|
||||
|
||||
/* Register the SYSFS files */
|
||||
rc = device_create_file(psc_dma->dev, &dev_attr_status);
|
||||
rc |= device_create_file(psc_dma->dev, &dev_attr_capture_overrun);
|
||||
rc |= device_create_file(psc_dma->dev, &dev_attr_playback_underrun);
|
||||
if (rc)
|
||||
dev_info(psc_dma->dev, "error creating sysfs files\n");
|
||||
|
||||
snd_soc_register_platform(&psc_dma_pcm_soc_platform);
|
||||
|
||||
/* Tell the ASoC OF helpers about it */
|
||||
of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op->node,
|
||||
&psc_dma->dai);
|
||||
/* Go */
|
||||
out_8(&psc_dma->psc_regs->command,
|
||||
MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
static int __devexit psc_i2s_of_remove(struct of_device *op)
|
||||
{
|
||||
struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
|
||||
|
||||
dev_dbg(&op->dev, "psc_i2s_remove()\n");
|
||||
|
||||
snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
|
||||
|
||||
bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
|
||||
bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
|
||||
|
||||
iounmap(psc_dma->psc_regs);
|
||||
iounmap(psc_dma->fifo_regs);
|
||||
kfree(psc_dma);
|
||||
dev_set_drvdata(&op->dev, NULL);
|
||||
|
||||
return 0;
|
||||
return mpc5200_audio_dma_destroy(op);
|
||||
}
|
||||
|
||||
/* Match table for of_platform binding */
|
||||
static struct of_device_id psc_i2s_match[] __devinitdata = {
|
||||
{ .compatible = "fsl,mpc5200-psc-i2s", },
|
||||
{ .compatible = "fsl,mpc5200b-psc-i2s", },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, psc_i2s_match);
|
||||
|
@ -411,4 +245,7 @@ static void __exit psc_i2s_exit(void)
|
|||
}
|
||||
module_exit(psc_i2s_exit);
|
||||
|
||||
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
|
||||
MODULE_DESCRIPTION("Freescale MPC5200 PSC in I2S mode ASoC Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
|
|
12
sound/soc/fsl/mpc5200_psc_i2s.h
Normal file
12
sound/soc/fsl/mpc5200_psc_i2s.h
Normal file
|
@ -0,0 +1,12 @@
|
|||
/*
|
||||
* Freescale MPC5200 PSC in I2S mode
|
||||
* ALSA SoC Digital Audio Interface (DAI) driver
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__
|
||||
#define __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__
|
||||
|
||||
extern struct snd_soc_dai psc_i2s_dai[];
|
||||
|
||||
#endif /* __SOUND_SOC_FSL_MPC52xx_PSC_I2S_H__ */
|
Loading…
Reference in a new issue