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-rw-r--r--sound/soc/fsl/Kconfig27
-rw-r--r--sound/soc/fsl/Makefile11
-rw-r--r--sound/soc/fsl/efika-audio-fabric.c20
-rw-r--r--sound/soc/fsl/fsl_dma.c458
-rw-r--r--sound/soc/fsl/fsl_dma.h20
-rw-r--r--sound/soc/fsl/fsl_ssi.c298
-rw-r--r--sound/soc/fsl/fsl_ssi.h26
-rw-r--r--sound/soc/fsl/mpc5200_dma.c66
-rw-r--r--sound/soc/fsl/mpc5200_dma.h5
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.c34
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.h2
-rw-r--r--sound/soc/fsl/mpc5200_psc_i2s.c19
-rw-r--r--sound/soc/fsl/mpc8610_hpcd.c660
-rw-r--r--sound/soc/fsl/p1022_ds.c591
-rw-r--r--sound/soc/fsl/pcm030-audio-fabric.c21
-rw-r--r--sound/soc/fsl/soc-of-simple.c172
16 files changed, 1486 insertions, 944 deletions
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 8cb65ccad35f..d754d34d68a6 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -1,27 +1,36 @@
-config SND_SOC_OF_SIMPLE
- tristate
-
config SND_MPC52xx_DMA
tristate
-# ASoC platform support for the Freescale MPC8610 SOC. This compiles drivers
-# for the SSI and the Elo DMA controller. You will still need to select
-# a platform driver and a codec driver.
-config SND_SOC_MPC8610
+# ASoC platform support for the Freescale PowerPC SOCs that have an SSI and
+# an Elo DMA controller, such as the MPC8610 and P1022. You will still need to
+# select a platform driver and a codec driver.
+config SND_SOC_POWERPC_SSI
tristate
- depends on MPC8610
+ depends on FSL_SOC
config SND_SOC_MPC8610_HPCD
tristate "ALSA SoC support for the Freescale MPC8610 HPCD board"
# I2C is necessary for the CS4270 driver
depends on MPC8610_HPCD && I2C
- select SND_SOC_MPC8610
+ select SND_SOC_POWERPC_SSI
select SND_SOC_CS4270
select SND_SOC_CS4270_VD33_ERRATA
default y if MPC8610_HPCD
help
Say Y if you want to enable audio on the Freescale MPC8610 HPCD.
+config SND_SOC_P1022_DS
+ tristate "ALSA SoC support for the Freescale P1022 DS board"
+ # I2C is necessary for the WM8776 driver
+ depends on P1022_DS && I2C
+ select SND_SOC_POWERPC_SSI
+ select SND_SOC_WM8776
+ default y if P1022_DS
+ help
+ Say Y if you want to enable audio on the Freescale P1022 DS board.
+ This will also include the Wolfson Microelectronics WM8776 codec
+ driver.
+
config SND_SOC_MPC5200_I2S
tristate "Freescale MPC5200 PSC in I2S mode driver"
depends on PPC_MPC52xx && PPC_BESTCOMM
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index a83a73967ec6..b4a38c0ac58c 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -1,14 +1,15 @@
-# Simple machine driver that extracts configuration from the OF device tree
-obj-$(CONFIG_SND_SOC_OF_SIMPLE) += soc-of-simple.o
-
# MPC8610 HPCD Machine Support
snd-soc-mpc8610-hpcd-objs := mpc8610_hpcd.o
obj-$(CONFIG_SND_SOC_MPC8610_HPCD) += snd-soc-mpc8610-hpcd.o
-# MPC8610 Platform Support
+# P1022 DS Machine Support
+snd-soc-p1022-ds-objs := p1022_ds.o
+obj-$(CONFIG_SND_SOC_P1022_DS) += snd-soc-p1022-ds.o
+
+# Freescale PowerPC SSI/DMA Platform Support
snd-soc-fsl-ssi-objs := fsl_ssi.o
snd-soc-fsl-dma-objs := fsl_dma.o
-obj-$(CONFIG_SND_SOC_MPC8610) += snd-soc-fsl-ssi.o snd-soc-fsl-dma.o
+obj-$(CONFIG_SND_SOC_POWERPC_SSI) += snd-soc-fsl-ssi.o snd-soc-fsl-dma.o
# MPC5200 Platform Support
obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o
diff --git a/sound/soc/fsl/efika-audio-fabric.c b/sound/soc/fsl/efika-audio-fabric.c
index 1a5b8e0d6a34..53251e6b5bd5 100644
--- a/sound/soc/fsl/efika-audio-fabric.c
+++ b/sound/soc/fsl/efika-audio-fabric.c
@@ -24,7 +24,6 @@
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
-#include <sound/soc-of-simple.h>
#include "mpc5200_dma.h"
#include "mpc5200_psc_ac97.h"
@@ -32,21 +31,24 @@
#define DRV_NAME "efika-audio-fabric"
-static struct snd_soc_device device;
static struct snd_soc_card card;
static struct snd_soc_dai_link efika_fabric_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 Analog",
- .codec_dai = &stac9766_dai[STAC9766_DAI_AC97_ANALOG],
- .cpu_dai = &psc_ac97_dai[MPC5200_AC97_NORMAL],
+ .codec_dai_name = "stac9766-hifi-analog",
+ .cpu_dai_name = "mpc5200-psc-ac97.0",
+ .platform_name = "mpc5200-pcm-audio",
+ .codec_name = "stac9766-codec",
},
{
.name = "AC97",
.stream_name = "AC97 IEC958",
- .codec_dai = &stac9766_dai[STAC9766_DAI_AC97_DIGITAL],
- .cpu_dai = &psc_ac97_dai[MPC5200_AC97_SPDIF],
+ .codec_dai_name = "stac9766-hifi-IEC958",
+ .cpu_dai_name = "mpc5200-psc-ac97.1",
+ .platform_name = "mpc5200-pcm-audio",
+ .codec_name = "stac9766-codec",
},
};
@@ -58,13 +60,10 @@ static __init int efika_fabric_init(void)
if (!of_machine_is_compatible("bplan,efika"))
return -ENODEV;
- card.platform = &mpc5200_audio_dma_platform;
card.name = "Efika";
card.dai_link = efika_fabric_dai;
card.num_links = ARRAY_SIZE(efika_fabric_dai);
- device.card = &card;
- device.codec_dev = &soc_codec_dev_stac9766;
pdev = platform_device_alloc("soc-audio", 1);
if (!pdev) {
@@ -72,8 +71,7 @@ static __init int efika_fabric_init(void)
return -ENODEV;
}
- platform_set_drvdata(pdev, &device);
- device.dev = &pdev->dev;
+ platform_set_drvdata(pdev, &card);
rc = platform_device_add(pdev);
if (rc) {
diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c
index 410c7496a18d..4cf98c03af22 100644
--- a/sound/soc/fsl/fsl_dma.c
+++ b/sound/soc/fsl/fsl_dma.c
@@ -3,10 +3,11 @@
*
* Author: Timur Tabi <timur@freescale.com>
*
- * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed
- * under the terms of the GNU General Public License version 2. This
- * program is licensed "as is" without any warranty of any kind, whether
- * express or implied.
+ * Copyright 2007-2010 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
*
* This driver implements ASoC support for the Elo DMA controller, which is
* the DMA controller on Freescale 83xx, 85xx, and 86xx SOCs. In ALSA terms,
@@ -20,6 +21,9 @@
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/gfp.h>
+#include <linux/of_platform.h>
+#include <linux/list.h>
+#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -29,6 +33,7 @@
#include <asm/io.h>
#include "fsl_dma.h"
+#include "fsl_ssi.h" /* For the offset of stx0 and srx0 */
/*
* The formats that the DMA controller supports, which is anything
@@ -52,26 +57,16 @@
#define FSLDMA_PCM_RATES (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_192000 | \
SNDRV_PCM_RATE_CONTINUOUS)
-/* DMA global data. This structure is used by fsl_dma_open() to determine
- * which DMA channels to assign to a substream. Unfortunately, ASoC V1 does
- * not allow the machine driver to provide this information to the PCM
- * driver in advance, and there's no way to differentiate between the two
- * DMA controllers. So for now, this driver only supports one SSI device
- * using two DMA channels. We cannot support multiple DMA devices.
- *
- * ssi_stx_phys: bus address of SSI STX register
- * ssi_srx_phys: bus address of SSI SRX register
- * dma_channel: pointer to the DMA channel's registers
- * irq: IRQ for this DMA channel
- * assigned: set to 1 if that DMA channel is assigned to a substream
- */
-static struct {
+struct dma_object {
+ struct snd_soc_platform_driver dai;
dma_addr_t ssi_stx_phys;
dma_addr_t ssi_srx_phys;
- struct ccsr_dma_channel __iomem *dma_channel[2];
- unsigned int irq[2];
- unsigned int assigned[2];
-} dma_global_data;
+ unsigned int ssi_fifo_depth;
+ struct ccsr_dma_channel __iomem *channel;
+ unsigned int irq;
+ bool assigned;
+ char path[1];
+};
/*
* The number of DMA links to use. Two is the bare minimum, but if you
@@ -88,8 +83,6 @@ static struct {
* structure.
*
* @link[]: array of link descriptors
- * @controller_id: which DMA controller (0, 1, ...)
- * @channel_id: which DMA channel on the controller (0, 1, 2, ...)
* @dma_channel: pointer to the DMA channel's registers
* @irq: IRQ for this DMA channel
* @substream: pointer to the substream object, needed by the ISR
@@ -104,12 +97,11 @@ static struct {
*/
struct fsl_dma_private {
struct fsl_dma_link_descriptor link[NUM_DMA_LINKS];
- unsigned int controller_id;
- unsigned int channel_id;
struct ccsr_dma_channel __iomem *dma_channel;
unsigned int irq;
struct snd_pcm_substream *substream;
dma_addr_t ssi_sxx_phys;
+ unsigned int ssi_fifo_depth;
dma_addr_t ld_buf_phys;
unsigned int current_link;
dma_addr_t dma_buf_phys;
@@ -185,13 +177,23 @@ static void fsl_dma_update_pointers(struct fsl_dma_private *dma_private)
struct fsl_dma_link_descriptor *link =
&dma_private->link[dma_private->current_link];
- /* Update our link descriptors to point to the next period */
- if (dma_private->substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- link->source_addr =
- cpu_to_be32(dma_private->dma_buf_next);
- else
- link->dest_addr =
- cpu_to_be32(dma_private->dma_buf_next);
+ /* Update our link descriptors to point to the next period. On a 36-bit
+ * system, we also need to update the ESAD bits. We also set (keep) the
+ * snoop bits. See the comments in fsl_dma_hw_params() about snooping.
+ */
+ if (dma_private->substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ link->source_addr = cpu_to_be32(dma_private->dma_buf_next);
+#ifdef CONFIG_PHYS_64BIT
+ link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP |
+ upper_32_bits(dma_private->dma_buf_next));
+#endif
+ } else {
+ link->dest_addr = cpu_to_be32(dma_private->dma_buf_next);
+#ifdef CONFIG_PHYS_64BIT
+ link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP |
+ upper_32_bits(dma_private->dma_buf_next));
+#endif
+ }
/* Update our variables for next time */
dma_private->dma_buf_next += dma_private->period_size;
@@ -212,6 +214,9 @@ static void fsl_dma_update_pointers(struct fsl_dma_private *dma_private)
static irqreturn_t fsl_dma_isr(int irq, void *dev_id)
{
struct fsl_dma_private *dma_private = dev_id;
+ struct snd_pcm_substream *substream = dma_private->substream;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->platform->dev;
struct ccsr_dma_channel __iomem *dma_channel = dma_private->dma_channel;
irqreturn_t ret = IRQ_NONE;
u32 sr, sr2 = 0;
@@ -222,11 +227,8 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id)
sr = in_be32(&dma_channel->sr);
if (sr & CCSR_DMA_SR_TE) {
- dev_err(dma_private->substream->pcm->card->dev,
- "DMA transmit error (controller=%u channel=%u irq=%u\n",
- dma_private->controller_id,
- dma_private->channel_id, irq);
- fsl_dma_abort_stream(dma_private->substream);
+ dev_err(dev, "dma transmit error\n");
+ fsl_dma_abort_stream(substream);
sr2 |= CCSR_DMA_SR_TE;
ret = IRQ_HANDLED;
}
@@ -235,11 +237,8 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id)
ret = IRQ_HANDLED;
if (sr & CCSR_DMA_SR_PE) {
- dev_err(dma_private->substream->pcm->card->dev,
- "DMA%u programming error (channel=%u irq=%u)\n",
- dma_private->controller_id,
- dma_private->channel_id, irq);
- fsl_dma_abort_stream(dma_private->substream);
+ dev_err(dev, "dma programming error\n");
+ fsl_dma_abort_stream(substream);
sr2 |= CCSR_DMA_SR_PE;
ret = IRQ_HANDLED;
}
@@ -253,8 +252,6 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id)
ret = IRQ_HANDLED;
if (sr & CCSR_DMA_SR_EOSI) {
- struct snd_pcm_substream *substream = dma_private->substream;
-
/* Tell ALSA we completed a period. */
snd_pcm_period_elapsed(substream);
@@ -288,11 +285,19 @@ static irqreturn_t fsl_dma_isr(int irq, void *dev_id)
* This function is called when the codec driver calls snd_soc_new_pcms(),
* once for each .dai_link in the machine driver's snd_soc_card
* structure.
+ *
+ * snd_dma_alloc_pages() is just a front-end to dma_alloc_coherent(), which
+ * (currently) always allocates the DMA buffer in lowmem, even if GFP_HIGHMEM
+ * is specified. Therefore, any DMA buffers we allocate will always be in low
+ * memory, but we support for 36-bit physical addresses anyway.
+ *
+ * Regardless of where the memory is actually allocated, since the device can
+ * technically DMA to any 36-bit address, we do need to set the DMA mask to 36.
*/
static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
struct snd_pcm *pcm)
{
- static u64 fsl_dma_dmamask = DMA_BIT_MASK(32);
+ static u64 fsl_dma_dmamask = DMA_BIT_MASK(36);
int ret;
if (!card->dev->dma_mask)
@@ -301,25 +306,29 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
if (!card->dev->coherent_dma_mask)
card->dev->coherent_dma_mask = fsl_dma_dmamask;
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
- fsl_dma_hardware.buffer_bytes_max,
- &pcm->streams[0].substream->dma_buffer);
- if (ret) {
- dev_err(card->dev,
- "Can't allocate playback DMA buffer (size=%u)\n",
- fsl_dma_hardware.buffer_bytes_max);
- return -ENOMEM;
+ /* Some codecs have separate DAIs for playback and capture, so we
+ * should allocate a DMA buffer only for the streams that are valid.
+ */
+
+ if (dai->driver->playback.channels_min) {
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
+ fsl_dma_hardware.buffer_bytes_max,
+ &pcm->streams[0].substream->dma_buffer);
+ if (ret) {
+ dev_err(card->dev, "can't alloc playback dma buffer\n");
+ return ret;
+ }
}
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
- fsl_dma_hardware.buffer_bytes_max,
- &pcm->streams[1].substream->dma_buffer);
- if (ret) {
- snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
- dev_err(card->dev,
- "Can't allocate capture DMA buffer (size=%u)\n",
- fsl_dma_hardware.buffer_bytes_max);
- return -ENOMEM;
+ if (dai->driver->capture.channels_min) {
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, card->dev,
+ fsl_dma_hardware.buffer_bytes_max,
+ &pcm->streams[1].substream->dma_buffer);
+ if (ret) {
+ snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
+ dev_err(card->dev, "can't alloc capture dma buffer\n");
+ return ret;
+ }
}
return 0;
@@ -390,6 +399,10 @@ static int fsl_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
static int fsl_dma_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->platform->dev;
+ struct dma_object *dma =
+ container_of(rtd->platform->driver, struct dma_object, dai);
struct fsl_dma_private *dma_private;
struct ccsr_dma_channel __iomem *dma_channel;
dma_addr_t ld_buf_phys;
@@ -407,52 +420,45 @@ static int fsl_dma_open(struct snd_pcm_substream *substream)
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
- dev_err(substream->pcm->card->dev, "invalid buffer size\n");
+ dev_err(dev, "invalid buffer size\n");
return ret;
}
channel = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1;
- if (dma_global_data.assigned[channel]) {
- dev_err(substream->pcm->card->dev,
- "DMA channel already assigned\n");
+ if (dma->assigned) {
+ dev_err(dev, "dma channel already assigned\n");
return -EBUSY;
}
- dma_private = dma_alloc_coherent(substream->pcm->card->dev,
- sizeof(struct fsl_dma_private), &ld_buf_phys, GFP_KERNEL);
+ dma_private = dma_alloc_coherent(dev, sizeof(struct fsl_dma_private),
+ &ld_buf_phys, GFP_KERNEL);
if (!dma_private) {
- dev_err(substream->pcm->card->dev,
- "can't allocate DMA private data\n");
+ dev_err(dev, "can't allocate dma private data\n");
return -ENOMEM;
}
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- dma_private->ssi_sxx_phys = dma_global_data.ssi_stx_phys;
+ dma_private->ssi_sxx_phys = dma->ssi_stx_phys;
else
- dma_private->ssi_sxx_phys = dma_global_data.ssi_srx_phys;
+ dma_private->ssi_sxx_phys = dma->ssi_srx_phys;
- dma_private->dma_channel = dma_global_data.dma_channel[channel];
- dma_private->irq = dma_global_data.irq[channel];
+ dma_private->ssi_fifo_depth = dma->ssi_fifo_depth;
+ dma_private->dma_channel = dma->channel;
+ dma_private->irq = dma->irq;
dma_private->substream = substream;
dma_private->ld_buf_phys = ld_buf_phys;
dma_private->dma_buf_phys = substream->dma_buffer.addr;
- /* We only support one DMA controller for now */
- dma_private->controller_id = 0;
- dma_private->channel_id = channel;
-
ret = request_irq(dma_private->irq, fsl_dma_isr, 0, "DMA", dma_private);
if (ret) {
- dev_err(substream->pcm->card->dev,
- "can't register ISR for IRQ %u (ret=%i)\n",
+ dev_err(dev, "can't register ISR for IRQ %u (ret=%i)\n",
dma_private->irq, ret);
- dma_free_coherent(substream->pcm->card->dev,
- sizeof(struct fsl_dma_private),
+ dma_free_coherent(dev, sizeof(struct fsl_dma_private),
dma_private, dma_private->ld_buf_phys);
return ret;
}
- dma_global_data.assigned[channel] = 1;
+ dma->assigned = 1;
snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
snd_soc_set_runtime_hwparams(substream, &fsl_dma_hardware);
@@ -546,13 +552,15 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_dma_private *dma_private = runtime->private_data;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->platform->dev;
/* Number of bits per sample */
- unsigned int sample_size =
+ unsigned int sample_bits =
snd_pcm_format_physical_width(params_format(hw_params));
/* Number of bytes per frame */
- unsigned int frame_size = 2 * (sample_size / 8);
+ unsigned int sample_bytes = sample_bits / 8;
/* Bus address of SSI STX register */
dma_addr_t ssi_sxx_phys = dma_private->ssi_sxx_phys;
@@ -592,7 +600,7 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
* that offset here. While we're at it, also tell the DMA controller
* how much data to transfer per sample.
*/
- switch (sample_size) {
+ switch (sample_bits) {
case 8:
mr |= CCSR_DMA_MR_DAHTS_1 | CCSR_DMA_MR_SAHTS_1;
ssi_sxx_phys += 3;
@@ -606,23 +614,42 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
break;
default:
/* We should never get here */
- dev_err(substream->pcm->card->dev,
- "unsupported sample size %u\n", sample_size);
+ dev_err(dev, "unsupported sample size %u\n", sample_bits);
return -EINVAL;
}
/*
- * BWC should always be a multiple of the frame size. BWC determines
- * how many bytes are sent/received before the DMA controller checks the
- * SSI to see if it needs to stop. For playback, the transmit FIFO can
- * hold three frames, so we want to send two frames at a time. For
- * capture, the receive FIFO is triggered when it contains one frame, so
- * we want to receive one frame at a time.
+ * BWC determines how many bytes are sent/received before the DMA
+ * controller checks the SSI to see if it needs to stop. BWC should
+ * always be a multiple of the frame size, so that we always transmit
+ * whole frames. Each frame occupies two slots in the FIFO. The
+ * parameter for CCSR_DMA_MR_BWC() is rounded down the next power of two
+ * (MR[BWC] can only represent even powers of two).
+ *
+ * To simplify the process, we set BWC to the largest value that is
+ * less than or equal to the FIFO watermark. For playback, this ensures
+ * that we transfer the maximum amount without overrunning the FIFO.
+ * For capture, this ensures that we transfer the maximum amount without
+ * underrunning the FIFO.
+ *
+ * f = SSI FIFO depth
+ * w = SSI watermark value (which equals f - 2)
+ * b = DMA bandwidth count (in bytes)
+ * s = sample size (in bytes, which equals frame_size * 2)
+ *
+ * For playback, we never transmit more than the transmit FIFO
+ * watermark, otherwise we might write more data than the FIFO can hold.
+ * The watermark is equal to the FIFO depth minus two.
+ *
+ * For capture, two equations must hold:
+ * w > f - (b / s)
+ * w >= b / s
+ *
+ * So, b > 2 * s, but b must also be <= s * w. To simplify, we set
+ * b = s * w, which is equal to
+ * (dma_private->ssi_fifo_depth - 2) * sample_bytes.
*/
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- mr |= CCSR_DMA_MR_BWC(2 * frame_size);
- else
- mr |= CCSR_DMA_MR_BWC(frame_size);
+ mr |= CCSR_DMA_MR_BWC((dma_private->ssi_fifo_depth - 2) * sample_bytes);
out_be32(&dma_channel->mr, mr);
@@ -631,12 +658,7 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
link->count = cpu_to_be32(period_size);
- /* Even though the DMA controller supports 36-bit addressing,
- * for simplicity we allow only 32-bit addresses for the audio
- * buffer itself. This was enforced in fsl_dma_new() with the
- * DMA mask.
- *
- * The snoop bit tells the DMA controller whether it should tell
+ /* The snoop bit tells the DMA controller whether it should tell
* the ECM to snoop during a read or write to an address. For
* audio, we use DMA to transfer data between memory and an I/O
* device (the SSI's STX0 or SRX0 register). Snooping is only
@@ -651,20 +673,24 @@ static int fsl_dma_hw_params(struct snd_pcm_substream *substream,
* flush out the data for the previous period. So if you
* increased period_bytes_min to a large enough size, you might
* get more performance by not snooping, and you'll still be
- * okay.
+ * okay. You'll need to update fsl_dma_update_pointers() also.
*/
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
link->source_addr = cpu_to_be32(temp_addr);
- link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP);
+ link->source_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP |
+ upper_32_bits(temp_addr));
link->dest_addr = cpu_to_be32(ssi_sxx_phys);
- link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP);
+ link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP |
+ upper_32_bits(ssi_sxx_phys));
} else {
link->source_addr = cpu_to_be32(ssi_sxx_phys);
- link->source_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP);
+ link->source_attr = cpu_to_be32(CCSR_DMA_ATR_NOSNOOP |
+ upper_32_bits(ssi_sxx_phys));
link->dest_addr = cpu_to_be32(temp_addr);
- link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP);
+ link->dest_attr = cpu_to_be32(CCSR_DMA_ATR_SNOOP |
+ upper_32_bits(temp_addr));
}
temp_addr += period_size;
@@ -689,14 +715,29 @@ static snd_pcm_uframes_t fsl_dma_pointer(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_dma_private *dma_private = runtime->private_data;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->platform->dev;
struct ccsr_dma_channel __iomem *dma_channel = dma_private->dma_channel;
dma_addr_t position;
snd_pcm_uframes_t frames;
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ /* Obtain the current DMA pointer, but don't read the ESAD bits if we
+ * only have 32-bit DMA addresses. This function is typically called
+ * in interrupt context, so we need to optimize it.
+ */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
position = in_be32(&dma_channel->sar);
- else
+#ifdef CONFIG_PHYS_64BIT
+ position |= (u64)(in_be32(&dma_channel->satr) &
+ CCSR_DMA_ATR_ESAD_MASK) << 32;
+#endif
+ } else {
position = in_be32(&dma_channel->dar);
+#ifdef CONFIG_PHYS_64BIT
+ position |= (u64)(in_be32(&dma_channel->datr) &
+ CCSR_DMA_ATR_ESAD_MASK) << 32;
+#endif
+ }
/*
* When capture is started, the SSI immediately starts to fill its FIFO.
@@ -710,8 +751,7 @@ static snd_pcm_uframes_t fsl_dma_pointer(struct snd_pcm_substream *substream)
if ((position < dma_private->dma_buf_phys) ||
(position > dma_private->dma_buf_end)) {
- dev_err(substream->pcm->card->dev,
- "dma pointer is out of range, halting stream\n");
+ dev_err(dev, "dma pointer is out of range, halting stream\n");
return SNDRV_PCM_POS_XRUN;
}
@@ -772,26 +812,28 @@ static int fsl_dma_close(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct fsl_dma_private *dma_private = runtime->private_data;
- int dir = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ? 0 : 1;
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct device *dev = rtd->platform->dev;
+ struct dma_object *dma =
+ container_of(rtd->platform->driver, struct dma_object, dai);
if (dma_private) {
if (dma_private->irq)
free_irq(dma_private->irq, dma_private);
if (dma_private->ld_buf_phys) {
- dma_unmap_single(substream->pcm->card->dev,
- dma_private->ld_buf_phys,
- sizeof(dma_private->link), DMA_TO_DEVICE);
+ dma_unmap_single(dev, dma_private->ld_buf_phys,
+ sizeof(dma_private->link),
+ DMA_TO_DEVICE);
}
/* Deallocate the fsl_dma_private structure */
- dma_free_coherent(substream->pcm->card->dev,
- sizeof(struct fsl_dma_private),
- dma_private, dma_private->ld_buf_phys);
+ dma_free_coherent(dev, sizeof(struct fsl_dma_private),
+ dma_private, dma_private->ld_buf_phys);
substream->runtime->private_data = NULL;
}
- dma_global_data.assigned[dir] = 0;
+ dma->assigned = 0;
return 0;
}
@@ -814,6 +856,37 @@ static void fsl_dma_free_dma_buffers(struct snd_pcm *pcm)
}
}
+/**
+ * find_ssi_node -- returns the SSI node that points to his DMA channel node
+ *
+ * Although this DMA driver attempts to operate independently of the other
+ * devices, it still needs to determine some information about the SSI device
+ * that it's working with. Unfortunately, the device tree does not contain
+ * a pointer from the DMA channel node to the SSI node -- the pointer goes the
+ * other way. So we need to scan the device tree for SSI nodes until we find
+ * the one that points to the given DMA channel node. It's ugly, but at least
+ * it's contained in this one function.
+ */
+static struct device_node *find_ssi_node(struct device_node *dma_channel_np)
+{
+ struct device_node *ssi_np, *np;
+
+ for_each_compatible_node(ssi_np, NULL, "fsl,mpc8610-ssi") {
+ /* Check each DMA phandle to see if it points to us. We
+ * assume that device_node pointers are a valid comparison.
+ */
+ np = of_parse_phandle(ssi_np, "fsl,playback-dma", 0);
+ if (np == dma_channel_np)
+ return ssi_np;
+
+ np = of_parse_phandle(ssi_np, "fsl,capture-dma", 0);
+ if (np == dma_channel_np)
+ return ssi_np;
+ }
+
+ return NULL;
+}
+
static struct snd_pcm_ops fsl_dma_ops = {
.open = fsl_dma_open,
.close = fsl_dma_close,
@@ -823,59 +896,114 @@ static struct snd_pcm_ops fsl_dma_ops = {
.pointer = fsl_dma_pointer,
};
-struct snd_soc_platform fsl_soc_platform = {
- .name = "fsl-dma",
- .pcm_ops = &fsl_dma_ops,
- .pcm_new = fsl_dma_new,
- .pcm_free = fsl_dma_free_dma_buffers,
-};
-EXPORT_SYMBOL_GPL(fsl_soc_platform);
+static int __devinit fsl_soc_dma_probe(struct platform_device *pdev,
+ const struct of_device_id *match)
+ {
+ struct dma_object *dma;
+ struct device_node *np = pdev->dev.of_node;
+ struct device_node *ssi_np;
+ struct resource res;
+ const uint32_t *iprop;
+ int ret;
-/**
- * fsl_dma_configure: store the DMA parameters from the fabric driver.
- *
- * This function is called by the ASoC fabric driver to give us the DMA and
- * SSI channel information.
- *
- * Unfortunately, ASoC V1 does make it possible to determine the DMA/SSI
- * data when a substream is created, so for now we need to store this data
- * into a global variable. This means that we can only support one DMA
- * controller, and hence only one SSI.
- */
-int fsl_dma_configure(struct fsl_dma_info *dma_info)
+ /* Find the SSI node that points to us. */
+ ssi_np = find_ssi_node(np);
+ if (!ssi_np) {
+ dev_err(&pdev->dev, "cannot find parent SSI node\n");
+ return -ENODEV;
+ }
+
+ ret = of_address_to_resource(ssi_np, 0, &res);
+ if (ret) {
+ dev_err(&pdev->dev, "could not determine resources for %s\n",
+ ssi_np->full_name);
+ of_node_put(ssi_np);
+ return ret;
+ }
+
+ dma = kzalloc(sizeof(*dma) + strlen(np->full_name), GFP_KERNEL);
+ if (!dma) {
+ dev_err(&pdev->dev, "could not allocate dma object\n");
+ of_node_put(ssi_np);
+ return -ENOMEM;
+ }
+
+ strcpy(dma->path, np->full_name);
+ dma->dai.ops = &fsl_dma_ops;
+ dma->dai.pcm_new = fsl_dma_new;
+ dma->dai.pcm_free = fsl_dma_free_dma_buffers;
+
+ /* Store the SSI-specific information that we need */
+ dma->ssi_stx_phys = res.start + offsetof(struct ccsr_ssi, stx0);
+ dma->ssi_srx_phys = res.start + offsetof(struct ccsr_ssi, srx0);
+
+ iprop = of_get_property(ssi_np, "fsl,fifo-depth", NULL);
+ if (iprop)
+ dma->ssi_fifo_depth = *iprop;
+ else
+ /* Older 8610 DTs didn't have the fifo-depth property */
+ dma->ssi_fifo_depth = 8;
+
+ of_node_put(ssi_np);
+
+ ret = snd_soc_register_platform(&pdev->dev, &dma->dai);
+ if (ret) {
+ dev_err(&pdev->dev, "could not register platform\n");
+ kfree(dma);
+ return ret;
+ }
+
+ dma->channel = of_iomap(np, 0);
+ dma->irq = irq_of_parse_and_map(np, 0);
+
+ dev_set_drvdata(&pdev->dev, dma);
+
+ return 0;
+}
+
+static int __devexit fsl_soc_dma_remove(struct platform_device *pdev)
{
- static int initialized;
+ struct dma_object *dma = dev_get_drvdata(&pdev->dev);
- /* We only support one DMA controller for now */
- if (initialized)
- return 0;
+ snd_soc_unregister_platform(&pdev->dev);
+ iounmap(dma->channel);
+ irq_dispose_mapping(dma->irq);
+ kfree(dma);
- dma_global_data.ssi_stx_phys = dma_info->ssi_stx_phys;
- dma_global_data.ssi_srx_phys = dma_info->ssi_srx_phys;
- dma_global_data.dma_channel[0] = dma_info->dma_channel[0];
- dma_global_data.dma_channel[1] = dma_info->dma_channel[1];
- dma_global_data.irq[0] = dma_info->dma_irq[0];
- dma_global_data.irq[1] = dma_info->dma_irq[1];
- dma_global_data.assigned[0] = 0;
- dma_global_data.assigned[1] = 0;
-
- initialized = 1;
- return 1;
+ return 0;
}
-EXPORT_SYMBOL_GPL(fsl_dma_configure);
-static int __init fsl_soc_platform_init(void)
+static const struct of_device_id fsl_soc_dma_ids[] = {
+ { .compatible = "fsl,ssi-dma-channel", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_soc_dma_ids);
+
+static struct of_platform_driver fsl_soc_dma_driver = {
+ .driver = {
+ .name = "fsl-pcm-audio",
+ .owner = THIS_MODULE,
+ .of_match_table = fsl_soc_dma_ids,
+ },
+ .probe = fsl_soc_dma_probe,
+ .remove = __devexit_p(fsl_soc_dma_remove),
+};
+
+static int __init fsl_soc_dma_init(void)
{
- return snd_soc_register_platform(&fsl_soc_platform);
+ pr_info("Freescale Elo DMA ASoC PCM Driver\n");
+
+ return of_register_platform_driver(&fsl_soc_dma_driver);
}
-module_init(fsl_soc_platform_init);
-static void __exit fsl_soc_platform_exit(void)
+static void __exit fsl_soc_dma_exit(void)
{
- snd_soc_unregister_platform(&fsl_soc_platform);
+ of_unregister_platform_driver(&fsl_soc_dma_driver);
}
-module_exit(fsl_soc_platform_exit);
+
+module_init(fsl_soc_dma_init);
+module_exit(fsl_soc_dma_exit);
MODULE_AUTHOR("Timur Tabi <timur@freescale.com>");
-MODULE_DESCRIPTION("Freescale Elo DMA ASoC PCM module");
-MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Freescale Elo DMA ASoC PCM Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/fsl/fsl_dma.h b/sound/soc/fsl/fsl_dma.h
index 385d4a42603c..78fee97e8036 100644
--- a/sound/soc/fsl/fsl_dma.h
+++ b/sound/soc/fsl/fsl_dma.h
@@ -126,24 +126,4 @@ struct fsl_dma_link_descriptor {
u8 res[4]; /* Reserved */
} __attribute__ ((aligned(32), packed));
-/* DMA information needed to create a snd_soc_dai object
- *
- * ssi_stx_phys: bus address of SSI STX register to use
- * ssi_srx_phys: bus address of SSI SRX register to use
- * dma[0]: points to the DMA channel to use for playback
- * dma[1]: points to the DMA channel to use for capture
- * dma_irq[0]: IRQ of the DMA channel to use for playback
- * dma_irq[1]: IRQ of the DMA channel to use for capture
- */
-struct fsl_dma_info {
- dma_addr_t ssi_stx_phys;
- dma_addr_t ssi_srx_phys;
- struct ccsr_dma_channel __iomem *dma_channel[2];
- unsigned int dma_irq[2];
-};
-
-extern struct snd_soc_platform fsl_soc_platform;
-
-int fsl_dma_configure(struct fsl_dma_info *dma_info);
-
#endif
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 762c1b8e8e4e..4cc167a7aeb8 100644
--- a/sound/soc/fsl/fsl_ssi.c
+++ b/sound/soc/fsl/fsl_ssi.c
@@ -3,10 +3,11 @@
*
* Author: Timur Tabi <timur@freescale.com>
*
- * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed
- * under the terms of the GNU General Public License version 2. This
- * program is licensed "as is" without any warranty of any kind, whether
- * express or implied.
+ * Copyright 2007-2010 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
*/
#include <linux/init.h>
@@ -15,6 +16,7 @@
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/slab.h>
+#include <linux/of_platform.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -22,8 +24,6 @@
#include <sound/initval.h>
#include <sound/soc.h>
-#include <asm/immap_86xx.h>
-
#include "fsl_ssi.h"
/**
@@ -71,33 +71,32 @@
/**
* fsl_ssi_private: per-SSI private data
*
- * @name: short name for this device ("SSI0", "SSI1", etc)
* @ssi: pointer to the SSI's registers
* @ssi_phys: physical address of the SSI registers
* @irq: IRQ of this SSI
* @first_stream: pointer to the stream that was opened first
* @second_stream: pointer to second stream
- * @dev: struct device pointer
* @playback: the number of playback streams opened
* @capture: the number of capture streams opened
* @asynchronous: 0=synchronous mode, 1=asynchronous mode
* @cpu_dai: the CPU DAI for this device
* @dev_attr: the sysfs device attribute structure
* @stats: SSI statistics
+ * @name: name for this device
*/
struct fsl_ssi_private {
- char name[8];
struct ccsr_ssi __iomem *ssi;
dma_addr_t ssi_phys;
unsigned int irq;
struct snd_pcm_substream *first_stream;
struct snd_pcm_substream *second_stream;
- struct device *dev;
unsigned int playback;
unsigned int capture;
int asynchronous;
- struct snd_soc_dai cpu_dai;
+ unsigned int fifo_depth;
+ struct snd_soc_dai_driver cpu_dai_drv;
struct device_attribute dev_attr;
+ struct platform_device *pdev;
struct {
unsigned int rfrc;
@@ -122,6 +121,8 @@ struct fsl_ssi_private {
unsigned int tfe1;
unsigned int tfe0;
} stats;
+
+ char name[1];
};
/**
@@ -280,7 +281,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data;
+ struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai);
/*
* If this is the first stream opened, then request the IRQ
@@ -290,6 +291,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
struct ccsr_ssi __iomem *ssi = ssi_private->ssi;
int ret;
+ /* The 'name' should not have any slashes in it. */
ret = request_irq(ssi_private->irq, fsl_ssi_isr, 0,
ssi_private->name, ssi_private);
if (ret < 0) {
@@ -336,11 +338,20 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
/*
* Set the watermark for transmit FIFI 0 and receive FIFO 0. We
- * don't use FIFO 1. Since the SSI only supports stereo, the
- * watermark should never be an odd number.
+ * don't use FIFO 1. We program the transmit water to signal a
+ * DMA transfer if there are only two (or fewer) elements left
+ * in the FIFO. Two elements equals one frame (left channel,
+ * right channel). This value, however, depends on the depth of
+ * the transmit buffer.
+ *
+ * We program the receive FIFO to notify us if at least two
+ * elements (one frame) have been written to the FIFO. We could
+ * make this value larger (and maybe we should), but this way
+ * data will be written to memory as soon as it's available.
*/
out_be32(&ssi->sfcsr,
- CCSR_SSI_SFCSR_TFWM0(6) | CCSR_SSI_SFCSR_RFWM0(2));
+ CCSR_SSI_SFCSR_TFWM0(ssi_private->fifo_depth - 2) |
+ CCSR_SSI_SFCSR_RFWM0(ssi_private->fifo_depth - 2));
/*
* We keep the SSI disabled because if we enable it, then the
@@ -422,7 +433,7 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream,
static int fsl_ssi_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params, struct snd_soc_dai *cpu_dai)
{
- struct fsl_ssi_private *ssi_private = cpu_dai->private_data;
+ struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai);
if (substream == ssi_private->first_stream) {
struct ccsr_ssi __iomem *ssi = ssi_private->ssi;
@@ -458,7 +469,7 @@ static int fsl_ssi_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data;
+ struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct ccsr_ssi __iomem *ssi = ssi_private->ssi;
switch (cmd) {
@@ -497,7 +508,7 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct fsl_ssi_private *ssi_private = rtd->dai->cpu_dai->private_data;
+ struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(rtd->cpu_dai);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
ssi_private->playback--;
@@ -523,56 +534,15 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream,
}
}
-/**
- * fsl_ssi_set_sysclk: set the clock frequency and direction
- *
- * This function is called by the machine driver to tell us what the clock
- * frequency and direction are.
- *
- * Currently, we only support operating as a clock slave (SND_SOC_CLOCK_IN),
- * and we don't care about the frequency. Return an error if the direction
- * is not SND_SOC_CLOCK_IN.
- *
- * @clk_id: reserved, should be zero
- * @freq: the frequency of the given clock ID, currently ignored
- * @dir: SND_SOC_CLOCK_IN (clock slave) or SND_SOC_CLOCK_OUT (clock master)
- */
-static int fsl_ssi_set_sysclk(struct snd_soc_dai *cpu_dai,
- int clk_id, unsigned int freq, int dir)
-{
-
- return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
-}
-
-/**
- * fsl_ssi_set_fmt: set the serial format.
- *
- * This function is called by the machine driver to tell us what serial
- * format to use.
- *
- * Currently, we only support I2S mode. Return an error if the format is
- * not SND_SOC_DAIFMT_I2S.
- *
- * @format: one of SND_SOC_DAIFMT_xxx
- */
-static int fsl_ssi_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
-{
- return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
-}
-
-/**
- * fsl_ssi_dai_template: template CPU DAI for the SSI
- */
static struct snd_soc_dai_ops fsl_ssi_dai_ops = {
.startup = fsl_ssi_startup,
.hw_params = fsl_ssi_hw_params,
.shutdown = fsl_ssi_shutdown,
.trigger = fsl_ssi_trigger,
- .set_sysclk = fsl_ssi_set_sysclk,
- .set_fmt = fsl_ssi_set_fmt,
};
-static struct snd_soc_dai fsl_ssi_dai_template = {
+/* Template for the CPU dai driver structure */
+static struct snd_soc_dai_driver fsl_ssi_dai_template = {
.playback = {
/* The SSI does not support monaural audio. */
.channels_min = 2,
@@ -640,95 +610,195 @@ static ssize_t fsl_sysfs_ssi_show(struct device *dev,
}
/**
- * fsl_ssi_create_dai: create a snd_soc_dai structure
- *
- * This function is called by the machine driver to create a snd_soc_dai
- * structure. The function creates an ssi_private object, which contains
- * the snd_soc_dai. It also creates the sysfs statistics device.
+ * Make every character in a string lower-case
*/
-struct snd_soc_dai *fsl_ssi_create_dai(struct fsl_ssi_info *ssi_info)
+static void make_lowercase(char *s)
+{
+ char *p = s;
+ char c;
+
+ while ((c = *p)) {
+ if ((c >= 'A') && (c <= 'Z'))
+ *p = c + ('a' - 'A');
+ p++;
+ }
+}
+
+static int __devinit fsl_ssi_probe(struct platform_device *pdev,
+ const struct of_device_id *match)
{
- struct snd_soc_dai *fsl_ssi_dai;
struct fsl_ssi_private *ssi_private;
int ret = 0;
- struct device_attribute *dev_attr;
+ struct device_attribute *dev_attr = NULL;
+ struct device_node *np = pdev->dev.of_node;
+ const char *p, *sprop;
+ const uint32_t *iprop;
+ struct resource res;
+ char name[64];
+
+ /* SSIs that are not connected on the board should have a
+ * status = "disabled"
+ * property in their device tree nodes.
+ */
+ if (!of_device_is_available(np))
+ return -ENODEV;
+
+ /* Check for a codec-handle property. */
+ if (!of_get_property(np, "codec-handle", NULL)) {
+ dev_err(&pdev->dev, "missing codec-handle property\n");
+ return -ENODEV;
+ }
- ssi_private = kzalloc(sizeof(struct fsl_ssi_private), GFP_KERNEL);
+ /* We only support the SSI in "I2S Slave" mode */
+ sprop = of_get_property(np, "fsl,mode", NULL);
+ if (!sprop || strcmp(sprop, "i2s-slave")) {
+ dev_notice(&pdev->dev, "mode %s is unsupported\n", sprop);
+ return -ENODEV;
+ }
+
+ /* The DAI name is the last part of the full name of the node. */
+ p = strrchr(np->full_name, '/') + 1;
+ ssi_private = kzalloc(sizeof(struct fsl_ssi_private) + strlen(p),
+ GFP_KERNEL);
if (!ssi_private) {
- dev_err(ssi_info->dev, "could not allocate DAI object\n");
- return NULL;
+ dev_err(&pdev->dev, "could not allocate DAI object\n");
+ return -ENOMEM;
}
- memcpy(&ssi_private->cpu_dai, &fsl_ssi_dai_template,
- sizeof(struct snd_soc_dai));
- fsl_ssi_dai = &ssi_private->cpu_dai;
- dev_attr = &ssi_private->dev_attr;
+ strcpy(ssi_private->name, p);
- sprintf(ssi_private->name, "ssi%u", (u8) ssi_info->id);
- ssi_private->ssi = ssi_info->ssi;
- ssi_private->ssi_phys = ssi_info->ssi_phys;
- ssi_private->irq = ssi_info->irq;
- ssi_private->dev = ssi_info->dev;
- ssi_private->asynchronous = ssi_info->asynchronous;
+ /* Initialize this copy of the CPU DAI driver structure */
+ memcpy(&ssi_private->cpu_dai_drv, &fsl_ssi_dai_template,
+ sizeof(fsl_ssi_dai_template));
+ ssi_private->cpu_dai_drv.name = ssi_private->name;
- dev_set_drvdata(ssi_private->dev, fsl_ssi_dai);
+ /* Get the addresses and IRQ */
+ ret = of_address_to_resource(np, 0, &res);
+ if (ret) {
+ dev_err(&pdev->dev, "could not determine device resources\n");
+ kfree(ssi_private);
+ return ret;
+ }
+ ssi_private->ssi = ioremap(res.start, 1 + res.end - res.start);
+ ssi_private->ssi_phys = res.start;
+ ssi_private->irq = irq_of_parse_and_map(np, 0);
+
+ /* Are the RX and the TX clocks locked? */
+ if (of_find_property(np, "fsl,ssi-asynchronous", NULL))
+ ssi_private->asynchronous = 1;
+ else
+ ssi_private->cpu_dai_drv.symmetric_rates = 1;
+
+ /* Determine the FIFO depth. */
+ iprop = of_get_property(np, "fsl,fifo-depth", NULL);
+ if (iprop)
+ ssi_private->fifo_depth = *iprop;
+ else
+ /* Older 8610 DTs didn't have the fifo-depth property */
+ ssi_private->fifo_depth = 8;
/* Initialize the the device_attribute structure */
- dev_attr->attr.name = "ssi-stats";
+ dev_attr = &ssi_private->dev_attr;
+ dev_attr->attr.name = "statistics";
dev_attr->attr.mode = S_IRUGO;
dev_attr->show = fsl_sysfs_ssi_show;
- ret = device_create_file(ssi_private->dev, dev_attr);
+ ret = device_create_file(&pdev->dev, dev_attr);
if (ret) {
- dev_err(ssi_info->dev, "could not create sysfs %s file\n",
+ dev_err(&pdev->dev, "could not create sysfs %s file\n",
ssi_private->dev_attr.attr.name);
- kfree(fsl_ssi_dai);
- return NULL;
+ goto error;
}
- fsl_ssi_dai->private_data = ssi_private;
- fsl_ssi_dai->name = ssi_private->name;
- fsl_ssi_dai->id = ssi_info->id;
- fsl_ssi_dai->dev = ssi_info->dev;
- fsl_ssi_dai->symmetric_rates = 1;
+ /* Register with ASoC */
+ dev_set_drvdata(&pdev->dev, ssi_private);
+
+ ret = snd_soc_register_dai(&pdev->dev, &ssi_private->cpu_dai_drv);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register DAI: %d\n", ret);
+ goto error;
+ }
- ret = snd_soc_register_dai(fsl_ssi_dai);
- if (ret != 0) {
- dev_err(ssi_info->dev, "failed to register DAI: %d\n", ret);
- kfree(fsl_ssi_dai);
- return NULL;
+ /* Trigger the machine driver's probe function. The platform driver
+ * name of the machine driver is taken from the /model property of the
+ * device tree. We also pass the address of the CPU DAI driver
+ * structure.
+ */
+ sprop = of_get_property(of_find_node_by_path("/"), "model", NULL);
+ /* Sometimes the model name has a "fsl," prefix, so we strip that. */
+ p = strrchr(sprop, ',');
+ if (p)
+ sprop = p + 1;
+ snprintf(name, sizeof(name), "snd-soc-%s", sprop);
+ make_lowercase(name);
+
+ ssi_private->pdev =
+ platform_device_register_data(&pdev->dev, name, 0, NULL, 0);
+ if (IS_ERR(ssi_private->pdev)) {
+ ret = PTR_ERR(ssi_private->pdev);
+ dev_err(&pdev->dev, "failed to register platform: %d\n", ret);
+ goto error;
}
- return fsl_ssi_dai;
+ return 0;
+
+error:
+ snd_soc_unregister_dai(&pdev->dev);
+ dev_set_drvdata(&pdev->dev, NULL);
+ if (dev_attr)
+ device_remove_file(&pdev->dev, dev_attr);
+ irq_dispose_mapping(ssi_private->irq);
+ iounmap(ssi_private->ssi);
+ kfree(ssi_private);
+
+ return ret;
}
-EXPORT_SYMBOL_GPL(fsl_ssi_create_dai);
-/**
- * fsl_ssi_destroy_dai: destroy the snd_soc_dai object
- *
- * This function undoes the operations of fsl_ssi_create_dai()
- */
-void fsl_ssi_destroy_dai(struct snd_soc_dai *fsl_ssi_dai)
+static int fsl_ssi_remove(struct platform_device *pdev)
{
- struct fsl_ssi_private *ssi_private =
- container_of(fsl_ssi_dai, struct fsl_ssi_private, cpu_dai);
-
- device_remove_file(ssi_private->dev, &ssi_private->dev_attr);
+ struct fsl_ssi_private *ssi_private = dev_get_drvdata(&pdev->dev);
- snd_soc_unregister_dai(&ssi_private->cpu_dai);
+ platform_device_unregister(ssi_private->pdev);
+ snd_soc_unregister_dai(&pdev->dev);
+ device_remove_file(&pdev->dev, &ssi_private->dev_attr);
kfree(ssi_private);
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(fsl_ssi_destroy_dai);
+
+static const struct of_device_id fsl_ssi_ids[] = {
+ { .compatible = "fsl,mpc8610-ssi", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, fsl_ssi_ids);
+
+static struct of_platform_driver fsl_ssi_driver = {
+ .driver = {
+ .name = "fsl-ssi-dai",
+ .owner = THIS_MODULE,
+ .of_match_table = fsl_ssi_ids,
+ },
+ .probe = fsl_ssi_probe,
+ .remove = fsl_ssi_remove,
+};
static int __init fsl_ssi_init(void)
{
printk(KERN_INFO "Freescale Synchronous Serial Interface (SSI) ASoC Driver\n");
- return 0;
+ return of_register_platform_driver(&fsl_ssi_driver);
}
+
+static void __exit fsl_ssi_exit(void)
+{
+ of_unregister_platform_driver(&fsl_ssi_driver);
+}
+
module_init(fsl_ssi_init);
+module_exit(fsl_ssi_exit);
MODULE_AUTHOR("Timur Tabi <timur@freescale.com>");
MODULE_DESCRIPTION("Freescale Synchronous Serial Interface (SSI) ASoC Driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h
index eade01feaab6..217300029b5b 100644
--- a/sound/soc/fsl/fsl_ssi.h
+++ b/sound/soc/fsl/fsl_ssi.h
@@ -196,31 +196,5 @@ struct ccsr_ssi {
#define CCSR_SSI_SOR_WAIT(x) (((x) & 3) << CCSR_SSI_SOR_WAIT_SHIFT)
#define CCSR_SSI_SOR_SYNRST 0x00000001
-/* Instantiation data for an SSI interface
- *
- * This structure contains all the information that the the SSI driver needs
- * to instantiate an SSI interface with ALSA. The machine driver should
- * create this structure, fill it in, call fsl_ssi_create_dai(), and then
- * delete the structure.
- *
- * id: which SSI this is (0, 1, etc. )
- * ssi: pointer to the SSI's registers
- * ssi_phys: physical address of the SSI registers
- * irq: IRQ of this SSI
- * dev: struct device, used to create the sysfs statistics file
- * asynchronous: 0=synchronous mode, 1=asynchronous mode
-*/
-struct fsl_ssi_info {
- unsigned int id;
- struct ccsr_ssi __iomem *ssi;
- dma_addr_t ssi_phys;
- unsigned int irq;
- struct device *dev;
- int asynchronous;
-};
-
-struct snd_soc_dai *fsl_ssi_create_dai(struct fsl_ssi_info *ssi_info);
-void fsl_ssi_destroy_dai(struct snd_soc_dai *fsl_ssi_dai);
-
#endif
diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index 3dcd1469f283..dce6b551cd78 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -9,6 +9,8 @@
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
#include <sound/soc.h>
@@ -107,7 +109,7 @@ static int psc_dma_hw_free(struct snd_pcm_substream *substream)
static int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct snd_pcm_runtime *runtime = substream->runtime;
struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
@@ -212,7 +214,7 @@ static int psc_dma_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct psc_dma_stream *s;
int rc;
@@ -239,7 +241,7 @@ static int psc_dma_open(struct snd_pcm_substream *substream)
static int psc_dma_close(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;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct psc_dma_stream *s;
dev_dbg(psc_dma->dev, "psc_dma_close(substream=%p)\n", substream);
@@ -264,7 +266,7 @@ static snd_pcm_uframes_t
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;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
struct psc_dma_stream *s;
dma_addr_t count;
@@ -302,11 +304,11 @@ 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;
- struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
size_t size = psc_dma_hardware.buffer_bytes_max;
int rc = 0;
- dev_dbg(rtd->socdev->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
+ dev_dbg(rtd->platform->dev, "psc_dma_new(card=%p, dai=%p, pcm=%p)\n",
card, dai, pcm);
if (!card->dev->dma_mask)
@@ -328,8 +330,8 @@ static int psc_dma_new(struct snd_card *card, struct snd_soc_dai *dai,
goto capture_alloc_err;
}
- if (rtd->socdev->card->codec->ac97)
- rtd->socdev->card->codec->ac97->private_data = psc_dma;
+ if (rtd->codec->ac97)
+ rtd->codec->ac97->private_data = psc_dma;
return 0;
@@ -349,7 +351,7 @@ static void psc_dma_free(struct snd_pcm *pcm)
struct snd_pcm_substream *substream;
int stream;
- dev_dbg(rtd->socdev->dev, "psc_dma_free(pcm=%p)\n", pcm);
+ dev_dbg(rtd->platform->dev, "psc_dma_free(pcm=%p)\n", pcm);
for (stream = 0; stream < 2; stream++) {
substream = pcm->streams[stream].substream;
@@ -361,15 +363,14 @@ static void psc_dma_free(struct snd_pcm *pcm)
}
}
-struct snd_soc_platform mpc5200_audio_dma_platform = {
- .name = "mpc5200-psc-audio",
- .pcm_ops = &psc_dma_ops,
+static struct snd_soc_platform_driver mpc5200_audio_dma_platform = {
+ .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 platform_device *op)
+static int mpc5200_hpcd_probe(struct of_device *op,
+ const struct of_device_id *match)
{
phys_addr_t fifo;
struct psc_dma *psc_dma;
@@ -475,7 +476,7 @@ int mpc5200_audio_dma_create(struct platform_device *op)
dev_set_drvdata(&op->dev, psc_dma);
/* Tell the ASoC OF helpers about it */
- return snd_soc_register_platform(&mpc5200_audio_dma_platform);
+ return snd_soc_register_platform(&op->dev, &mpc5200_audio_dma_platform);
out_irq:
free_irq(psc_dma->irq, psc_dma);
free_irq(psc_dma->capture.irq, &psc_dma->capture);
@@ -486,15 +487,14 @@ out_unmap:
iounmap(regs);
return ret;
}
-EXPORT_SYMBOL_GPL(mpc5200_audio_dma_create);
-int mpc5200_audio_dma_destroy(struct platform_device *op)
+static int mpc5200_hpcd_remove(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);
+ snd_soc_unregister_platform(&op->dev);
bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
@@ -510,7 +510,35 @@ int mpc5200_audio_dma_destroy(struct platform_device *op)
return 0;
}
-EXPORT_SYMBOL_GPL(mpc5200_audio_dma_destroy);
+
+static struct of_device_id mpc5200_hpcd_match[] = {
+ {
+ .compatible = "fsl,mpc5200-pcm",
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mpc5200_hpcd_match);
+
+static struct of_platform_driver mpc5200_hpcd_of_driver = {
+ .owner = THIS_MODULE,
+ .name = "mpc5200-pcm-audio",
+ .match_table = mpc5200_hpcd_match,
+ .probe = mpc5200_hpcd_probe,
+ .remove = mpc5200_hpcd_remove,
+};
+
+static int __init mpc5200_hpcd_init(void)
+{
+ return of_register_platform_driver(&mpc5200_hpcd_of_driver);
+}
+
+static void __exit mpc5200_hpcd_exit(void)
+{
+ of_unregister_platform_driver(&mpc5200_hpcd_of_driver);
+}
+
+module_init(mpc5200_hpcd_init);
+module_exit(mpc5200_hpcd_exit);
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
index ca99586f2ad9..a3c0cd5382fb 100644
--- a/sound/soc/fsl/mpc5200_dma.h
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -81,9 +81,4 @@ to_psc_dma_stream(struct snd_pcm_substream *substream, struct psc_dma *psc_dma)
return &psc_dma->playback;
}
-int mpc5200_audio_dma_create(struct platform_device *op);
-int mpc5200_audio_dma_destroy(struct platform_device *op);
-
-extern struct snd_soc_platform mpc5200_audio_dma_platform;
-
#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index a9560235daee..40acc8e2b1ca 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -143,7 +143,7 @@ static int psc_ac97_hw_analog_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
- struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai);
struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
@@ -166,7 +166,7 @@ static int psc_ac97_hw_digital_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
- struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai);
dev_dbg(psc_dma->dev, "%s(substream=%p)\n", __func__, substream);
@@ -181,8 +181,7 @@ static int psc_ac97_hw_digital_params(struct snd_pcm_substream *substream,
static int psc_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(dai);
struct psc_dma_stream *s = to_psc_dma_stream(substream, psc_dma);
switch (cmd) {
@@ -207,10 +206,9 @@ static int psc_ac97_trigger(struct snd_pcm_substream *substream, int cmd,
return 0;
}
-static int psc_ac97_probe(struct platform_device *pdev,
- struct snd_soc_dai *cpu_dai)
+static int psc_ac97_probe(struct snd_soc_dai *cpu_dai)
{
- struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai);
struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
/* Go */
@@ -237,9 +235,8 @@ static struct snd_soc_dai_ops psc_ac97_digital_ops = {
.hw_params = psc_ac97_hw_digital_params,
};
-struct snd_soc_dai psc_ac97_dai[] = {
+static struct snd_soc_dai_driver psc_ac97_dai[] = {
{
- .name = "AC97",
.ac97_control = 1,
.probe = psc_ac97_probe,
.playback = {
@@ -257,7 +254,6 @@ struct snd_soc_dai psc_ac97_dai[] = {
.ops = &psc_ac97_analog_ops,
},
{
- .name = "SPDIF",
.ac97_control = 1,
.playback = {
.channels_min = 1,
@@ -268,7 +264,6 @@ struct snd_soc_dai psc_ac97_dai[] = {
},
.ops = &psc_ac97_digital_ops,
} };
-EXPORT_SYMBOL_GPL(psc_ac97_dai);
@@ -280,18 +275,11 @@ EXPORT_SYMBOL_GPL(psc_ac97_dai);
static int __devinit psc_ac97_of_probe(struct platform_device *op,
const struct of_device_id *match)
{
- int rc, i;
+ int rc;
struct snd_ac97 ac97;
struct mpc52xx_psc __iomem *regs;
- rc = mpc5200_audio_dma_create(op);
- if (rc != 0)
- return rc;
-
- for (i = 0; i < ARRAY_SIZE(psc_ac97_dai); i++)
- psc_ac97_dai[i].dev = &op->dev;
-
- rc = snd_soc_register_dais(psc_ac97_dai, ARRAY_SIZE(psc_ac97_dai));
+ rc = snd_soc_register_dais(&op->dev, psc_ac97_dai, ARRAY_SIZE(psc_ac97_dai));
if (rc != 0) {
dev_err(&op->dev, "Failed to register DAI\n");
return rc;
@@ -301,9 +289,6 @@ static int __devinit psc_ac97_of_probe(struct platform_device *op,
regs = psc_dma->psc_regs;
ac97.private_data = psc_dma;
- for (i = 0; i < ARRAY_SIZE(psc_ac97_dai); i++)
- psc_ac97_dai[i].private_data = psc_dma;
-
psc_dma->imr = 0;
out_be16(&psc_dma->psc_regs->isr_imr.imr, psc_dma->imr);
@@ -319,7 +304,8 @@ static int __devinit psc_ac97_of_probe(struct platform_device *op,
static int __devexit psc_ac97_of_remove(struct platform_device *op)
{
- return mpc5200_audio_dma_destroy(op);
+ snd_soc_unregister_dais(&op->dev, ARRAY_SIZE(psc_ac97_dai));
+ return 0;
}
/* Match table for of_platform binding */
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.h b/sound/soc/fsl/mpc5200_psc_ac97.h
index 4bc18c35c369..e881e784b270 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.h
+++ b/sound/soc/fsl/mpc5200_psc_ac97.h
@@ -7,8 +7,6 @@
#ifndef __SOUND_SOC_FSL_MPC52xx_PSC_AC97_H__
#define __SOUND_SOC_FSL_MPC52xx_PSC_AC97_H__
-extern struct snd_soc_dai psc_ac97_dai[];
-
#define MPC5200_AC97_NORMAL 0
#define MPC5200_AC97_SPDIF 1
diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
index 534f04cb15d7..74ffed41340f 100644
--- a/sound/soc/fsl/mpc5200_psc_i2s.c
+++ b/sound/soc/fsl/mpc5200_psc_i2s.c
@@ -40,7 +40,7 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(rtd->cpu_dai);
u32 mode;
dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
@@ -88,7 +88,7 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
int clk_id, unsigned int freq, int dir)
{
- struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai);
dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",
cpu_dai, dir);
return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
@@ -107,7 +107,7 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
*/
static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
{
- struct psc_dma *psc_dma = cpu_dai->private_data;
+ struct psc_dma *psc_dma = snd_soc_dai_get_drvdata(cpu_dai);
dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",
cpu_dai, format);
return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
@@ -129,8 +129,7 @@ static struct snd_soc_dai_ops psc_i2s_dai_ops = {
.set_fmt = psc_i2s_set_fmt,
};
-struct snd_soc_dai psc_i2s_dai[] = {{
- .name = "I2S",
+static struct snd_soc_dai_driver psc_i2s_dai[] = {{
.playback = {
.channels_min = 2,
.channels_max = 2,
@@ -145,7 +144,6 @@ struct snd_soc_dai psc_i2s_dai[] = {{
},
.ops = &psc_i2s_dai_ops,
} };
-EXPORT_SYMBOL_GPL(psc_i2s_dai);
/* ---------------------------------------------------------------------
* OF platform bus binding code:
@@ -159,11 +157,7 @@ static int __devinit psc_i2s_of_probe(struct platform_device *op,
struct psc_dma *psc_dma;
struct mpc52xx_psc __iomem *regs;
- rc = mpc5200_audio_dma_create(op);
- if (rc != 0)
- return rc;
-
- rc = snd_soc_register_dais(psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai));
+ rc = snd_soc_register_dais(&op->dev, psc_i2s_dai, ARRAY_SIZE(psc_i2s_dai));
if (rc != 0) {
pr_err("Failed to register DAI\n");
return 0;
@@ -207,7 +201,8 @@ static int __devinit psc_i2s_of_probe(struct platform_device *op,
static int __devexit psc_i2s_of_remove(struct platform_device *op)
{
- return mpc5200_audio_dma_destroy(op);
+ snd_soc_unregister_dais(&op->dev, ARRAY_SIZE(psc_i2s_dai));
+ return 0;
}
/* Match table for of_platform binding */
diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c
index 3b13b8d65262..0d7dcf1e4863 100644
--- a/sound/soc/fsl/mpc8610_hpcd.c
+++ b/sound/soc/fsl/mpc8610_hpcd.c
@@ -1,85 +1,97 @@
/**
- * Freescale MPC8610HPCD ALSA SoC Fabric driver
+ * Freescale MPC8610HPCD ALSA SoC Machine driver
*
* Author: Timur Tabi <timur@freescale.com>
*
- * Copyright 2007-2008 Freescale Semiconductor, Inc. This file is licensed
- * under the terms of the GNU General Public License version 2. This
- * program is licensed "as is" without any warranty of any kind, whether
- * express or implied.
+ * Copyright 2007-2010 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
*/
-#include <linux/slab.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/of_device.h>
-#include <linux/of_platform.h>
+#include <linux/slab.h>
#include <sound/soc.h>
-#include <asm/immap_86xx.h>
+#include <asm/fsl_guts.h>
-#include "../codecs/cs4270.h"
#include "fsl_dma.h"
#include "fsl_ssi.h"
+/* There's only one global utilities register */
+static phys_addr_t guts_phys;
+
+#define DAI_NAME_SIZE 32
+
/**
- * mpc8610_hpcd_data: fabric-specific ASoC device data
+ * mpc8610_hpcd_data: machine-specific ASoC device data
*
* This structure contains data for a single sound platform device on an
* MPC8610 HPCD. Some of the data is taken from the device tree.
*/
struct mpc8610_hpcd_data {
- struct snd_soc_device sound_devdata;
- struct snd_soc_dai_link dai;
- struct snd_soc_card machine;
+ struct snd_soc_dai_link dai[2];
+ struct snd_soc_card card;
unsigned int dai_format;
unsigned int codec_clk_direction;
unsigned int cpu_clk_direction;
unsigned int clk_frequency;
- struct ccsr_guts __iomem *guts;
- struct ccsr_ssi __iomem *ssi;
- unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */
- unsigned int ssi_irq;
- unsigned int dma_id; /* 0 = DMA1, 1 = DMA2, etc */
- unsigned int dma_irq[2];
- struct ccsr_dma_channel __iomem *dma[2];
+ unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */
+ unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */
unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/
+ char codec_dai_name[DAI_NAME_SIZE];
+ char codec_name[DAI_NAME_SIZE];
+ char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */
};
/**
* mpc8610_hpcd_machine_probe: initialize the board
*
- * This function is called when platform_device_add() is called. It is used
- * to initialize the board-specific hardware.
+ * This function is used to initialize the board-specific hardware.
*
* Here we program the DMACR and PMUXCR registers.
*/
static int mpc8610_hpcd_machine_probe(struct platform_device *sound_device)
{
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
struct mpc8610_hpcd_data *machine_data =
- sound_device->dev.platform_data;
+ container_of(card, struct mpc8610_hpcd_data, card);
+ struct ccsr_guts_86xx __iomem *guts;
- /* Program the signal routing between the SSI and the DMA */
- guts_set_dmacr(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[0], CCSR_GUTS_DMACR_DEV_SSI);
- guts_set_dmacr(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[1], CCSR_GUTS_DMACR_DEV_SSI);
+ guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx));
+ if (!guts) {
+ dev_err(card->dev, "could not map global utilities\n");
+ return -ENOMEM;
+ }
- guts_set_pmuxcr_dma(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[0], 0);
- guts_set_pmuxcr_dma(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[1], 0);
+ /* Program the signal routing between the SSI and the DMA */
+ guts_set_dmacr(guts, machine_data->dma_id[0],
+ machine_data->dma_channel_id[0],
+ CCSR_GUTS_DMACR_DEV_SSI);
+ guts_set_dmacr(guts, machine_data->dma_id[1],
+ machine_data->dma_channel_id[1],
+ CCSR_GUTS_DMACR_DEV_SSI);
+
+ guts_set_pmuxcr_dma(guts, machine_data->dma_id[0],
+ machine_data->dma_channel_id[0], 0);
+ guts_set_pmuxcr_dma(guts, machine_data->dma_id[1],
+ machine_data->dma_channel_id[1], 0);
switch (machine_data->ssi_id) {
case 0:
- clrsetbits_be32(&machine_data->guts->pmuxcr,
+ clrsetbits_be32(&guts->pmuxcr,
CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI);
break;
case 1:
- clrsetbits_be32(&machine_data->guts->pmuxcr,
+ clrsetbits_be32(&guts->pmuxcr,
CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI);
break;
}
+ iounmap(guts);
+
return 0;
}
@@ -93,38 +105,15 @@ static int mpc8610_hpcd_machine_probe(struct platform_device *sound_device)
static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
- struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct mpc8610_hpcd_data *machine_data =
- rtd->socdev->dev->platform_data;
+ container_of(rtd->card, struct mpc8610_hpcd_data, card);
+ struct device *dev = rtd->card->dev;
int ret = 0;
- /* Tell the CPU driver what the serial protocol is. */
- ret = snd_soc_dai_set_fmt(cpu_dai, machine_data->dai_format);
- if (ret < 0) {
- dev_err(substream->pcm->card->dev,
- "could not set CPU driver audio format\n");
- return ret;
- }
-
/* Tell the codec driver what the serial protocol is. */
- ret = snd_soc_dai_set_fmt(codec_dai, machine_data->dai_format);
+ ret = snd_soc_dai_set_fmt(rtd->codec_dai, machine_data->dai_format);
if (ret < 0) {
- dev_err(substream->pcm->card->dev,
- "could not set codec driver audio format\n");
- return ret;
- }
-
- /*
- * Tell the CPU driver what the clock frequency is, and whether it's a
- * slave or master.
- */
- ret = snd_soc_dai_set_sysclk(cpu_dai, 0,
- machine_data->clk_frequency,
- machine_data->cpu_clk_direction);
- if (ret < 0) {
- dev_err(substream->pcm->card->dev,
- "could not set CPU driver clock parameters\n");
+ dev_err(dev, "could not set codec driver audio format\n");
return ret;
}
@@ -132,12 +121,11 @@ static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream)
* Tell the codec driver what the MCLK frequency is, and whether it's
* a slave or master.
*/
- ret = snd_soc_dai_set_sysclk(codec_dai, 0,
- machine_data->clk_frequency,
- machine_data->codec_clk_direction);
+ ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0,
+ machine_data->clk_frequency,
+ machine_data->codec_clk_direction);
if (ret < 0) {
- dev_err(substream->pcm->card->dev,
- "could not set codec driver clock params\n");
+ dev_err(dev, "could not set codec driver clock params\n");
return ret;
}
@@ -150,116 +138,255 @@ static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream)
* This function is called to remove the sound device for one SSI. We
* de-program the DMACR and PMUXCR register.
*/
-int mpc8610_hpcd_machine_remove(struct platform_device *sound_device)
+static int mpc8610_hpcd_machine_remove(struct platform_device *sound_device)
{
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
struct mpc8610_hpcd_data *machine_data =
- sound_device->dev.platform_data;
+ container_of(card, struct mpc8610_hpcd_data, card);
+ struct ccsr_guts_86xx __iomem *guts;
+
+ guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx));
+ if (!guts) {
+ dev_err(card->dev, "could not map global utilities\n");
+ return -ENOMEM;
+ }
/* Restore the signal routing */
- guts_set_dmacr(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[0], 0);
- guts_set_dmacr(machine_data->guts, machine_data->dma_id,
- machine_data->dma_channel_id[1], 0);
+ guts_set_dmacr(guts, machine_data->dma_id[0],
+ machine_data->dma_channel_id[0], 0);
+ guts_set_dmacr(guts, machine_data->dma_id[1],
+ machine_data->dma_channel_id[1], 0);
switch (machine_data->ssi_id) {
case 0:
- clrsetbits_be32(&machine_data->guts->pmuxcr,
+ clrsetbits_be32(&guts->pmuxcr,
CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA);
break;
case 1:
- clrsetbits_be32(&machine_data->guts->pmuxcr,
+ clrsetbits_be32(&guts->pmuxcr,
CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA);
break;
}
+ iounmap(guts);
+
return 0;
}
/**
- * mpc8610_hpcd_ops: ASoC fabric driver operations
+ * mpc8610_hpcd_ops: ASoC machine driver operations
*/
static struct snd_soc_ops mpc8610_hpcd_ops = {
.startup = mpc8610_hpcd_startup,
};
/**
- * mpc8610_hpcd_probe: OF probe function for the fabric driver
+ * get_node_by_phandle_name - get a node by its phandle name
*
- * This function gets called when an SSI node is found in the device tree.
+ * This function takes a node, the name of a property in that node, and a
+ * compatible string. Assuming the property is a phandle to another node,
+ * it returns that node, (optionally) if that node is compatible.
*
- * Although this is a fabric driver, the SSI node is the "master" node with
- * respect to audio hardware connections. Therefore, we create a new ASoC
- * device for each new SSI node that has a codec attached.
+ * If the property is not a phandle, or the node it points to is not compatible
+ * with the specific string, then NULL is returned.
+ */
+static struct device_node *get_node_by_phandle_name(struct device_node *np,
+ const char *name,
+ const char *compatible)
+{
+ const phandle *ph;
+ int len;
+
+ ph = of_get_property(np, name, &len);
+ if (!ph || (len != sizeof(phandle)))
+ return NULL;
+
+ np = of_find_node_by_phandle(*ph);
+ if (!np)
+ return NULL;
+
+ if (compatible && !of_device_is_compatible(np, compatible)) {
+ of_node_put(np);
+ return NULL;
+ }
+
+ return np;
+}
+
+/**
+ * get_parent_cell_index -- return the cell-index of the parent of a node
+ *
+ * Return the value of the cell-index property of the parent of the given
+ * node. This is used for DMA channel nodes that need to know the DMA ID
+ * of the controller they are on.
+ */
+static int get_parent_cell_index(struct device_node *np)
+{
+ struct device_node *parent = of_get_parent(np);
+ const u32 *iprop;
+
+ if (!parent)
+ return -1;
+
+ iprop = of_get_property(parent, "cell-index", NULL);
+ of_node_put(parent);
+
+ if (!iprop)
+ return -1;
+
+ return *iprop;
+}
+
+/**
+ * codec_node_dev_name - determine the dev_name for a codec node
*
- * FIXME: Currently, we only support one DMA controller, so if there are
- * multiple SSI nodes with codecs, only the first will be supported.
+ * This function determines the dev_name for an I2C node. This is the name
+ * that would be returned by dev_name() if this device_node were part of a
+ * 'struct device' It's ugly and hackish, but it works.
*
- * FIXME: Even if we did support multiple DMA controllers, we have no
- * mechanism for assigning DMA controllers and channels to the individual
- * SSI devices. We also probably aren't compatible with the generic Elo DMA
- * device driver.
+ * The dev_name for such devices include the bus number and I2C address. For
+ * example, "cs4270-codec.0-004f".
*/
-static int mpc8610_hpcd_probe(struct platform_device *ofdev,
- const struct of_device_id *match)
+static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
{
- struct device_node *np = ofdev->dev.of_node;
- struct device_node *codec_np = NULL;
- struct device_node *guts_np = NULL;
- struct device_node *dma_np = NULL;
- struct device_node *dma_channel_np = NULL;
- const phandle *codec_ph;
- const char *sprop;
const u32 *iprop;
+ int bus, addr;
+ char temp[DAI_NAME_SIZE];
+
+ of_modalias_node(np, temp, DAI_NAME_SIZE);
+
+ iprop = of_get_property(np, "reg", NULL);
+ if (!iprop)
+ return -EINVAL;
+
+ addr = *iprop;
+
+ bus = get_parent_cell_index(np);
+ if (bus < 0)
+ return bus;
+
+ snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr);
+
+ return 0;
+}
+
+static int get_dma_channel(struct device_node *ssi_np,
+ const char *compatible,
+ struct snd_soc_dai_link *dai,
+ unsigned int *dma_channel_id,
+ unsigned int *dma_id)
+{
struct resource res;
+ struct device_node *dma_channel_np;
+ const u32 *iprop;
+ int ret;
+
+ dma_channel_np = get_node_by_phandle_name(ssi_np, compatible,
+ "fsl,ssi-dma-channel");
+ if (!dma_channel_np)
+ return -EINVAL;
+
+ /* Determine the dev_name for the device_node. This code mimics the
+ * behavior of of_device_make_bus_id(). We need this because ASoC uses
+ * the dev_name() of the device to match the platform (DMA) device with
+ * the CPU (SSI) device. It's all ugly and hackish, but it works (for
+ * now).
+ *
+ * dai->platform name should already point to an allocated buffer.
+ */
+ ret = of_address_to_resource(dma_channel_np, 0, &res);
+ if (ret)
+ return ret;
+ snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s",
+ (unsigned long long) res.start, dma_channel_np->name);
+
+ iprop = of_get_property(dma_channel_np, "cell-index", NULL);
+ if (!iprop) {
+ of_node_put(dma_channel_np);
+ return -EINVAL;
+ }
+
+ *dma_channel_id = *iprop;
+ *dma_id = get_parent_cell_index(dma_channel_np);
+ of_node_put(dma_channel_np);
+
+ return 0;
+}
+
+/**
+ * mpc8610_hpcd_probe: platform probe function for the machine driver
+ *
+ * Although this is a machine driver, the SSI node is the "master" node with
+ * respect to audio hardware connections. Therefore, we create a new ASoC
+ * device for each new SSI node that has a codec attached.
+ */
+static int mpc8610_hpcd_probe(struct platform_device *pdev)
+{
+ struct device *dev = pdev->dev.parent;
+ /* ssi_pdev is the platform device for the SSI node that probed us */
+ struct platform_device *ssi_pdev =
+ container_of(dev, struct platform_device, dev);
+ struct device_node *np = ssi_pdev->dev.of_node;
+ struct device_node *codec_np = NULL;
struct platform_device *sound_device = NULL;
struct mpc8610_hpcd_data *machine_data;
- struct fsl_ssi_info ssi_info;
- struct fsl_dma_info dma_info;
int ret = -ENODEV;
- unsigned int playback_dma_channel;
- unsigned int capture_dma_channel;
+ const char *sprop;
+ const u32 *iprop;
+
+ /* We are only interested in SSIs with a codec phandle in them,
+ * so let's make sure this SSI has one. The MPC8610 HPCD only
+ * knows about the CS4270 codec, so reject anything else.
+ */
+ codec_np = get_node_by_phandle_name(np, "codec-handle",
+ "cirrus,cs4270");
+ if (!codec_np) {
+ dev_err(dev, "invalid codec node\n");
+ return -EINVAL;
+ }
machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL);
if (!machine_data)
return -ENOMEM;
- memset(&ssi_info, 0, sizeof(ssi_info));
- memset(&dma_info, 0, sizeof(dma_info));
+ machine_data->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev);
+ machine_data->dai[0].ops = &mpc8610_hpcd_ops;
- ssi_info.dev = &ofdev->dev;
-
- /*
- * We are only interested in SSIs with a codec phandle in them, so let's
- * make sure this SSI has one.
- */
- codec_ph = of_get_property(np, "codec-handle", NULL);
- if (!codec_ph)
+ /* Determine the codec name, it will be used as the codec DAI name */
+ ret = codec_node_dev_name(codec_np, machine_data->codec_name,
+ DAI_NAME_SIZE);
+ if (ret) {
+ dev_err(&pdev->dev, "invalid codec node %s\n",
+ codec_np->full_name);
+ ret = -EINVAL;
goto error;
+ }
+ machine_data->dai[0].codec_name = machine_data->codec_name;
- codec_np = of_find_node_by_phandle(*codec_ph);
- if (!codec_np)
- goto error;
+ /* The DAI name from the codec (snd_soc_dai_driver.name) */
+ machine_data->dai[0].codec_dai_name = "cs4270-hifi";
- /* The MPC8610 HPCD only knows about the CS4270 codec, so reject
- anything else. */
- if (!of_device_is_compatible(codec_np, "cirrus,cs4270"))
- goto error;
+ /* We register two DAIs per SSI, one for playback and the other for
+ * capture. Currently, we only support codecs that have one DAI for
+ * both playback and capture.
+ */
+ memcpy(&machine_data->dai[1], &machine_data->dai[0],
+ sizeof(struct snd_soc_dai_link));
/* Get the device ID */
iprop = of_get_property(np, "cell-index", NULL);
if (!iprop) {
- dev_err(&ofdev->dev, "cell-index property not found\n");
+ dev_err(&pdev->dev, "cell-index property not found\n");
ret = -EINVAL;
goto error;
}
machine_data->ssi_id = *iprop;
- ssi_info.id = *iprop;
/* Get the serial format and clock direction. */
sprop = of_get_property(np, "fsl,mode", NULL);
if (!sprop) {
- dev_err(&ofdev->dev, "fsl,mode property not found\n");
+ dev_err(&pdev->dev, "fsl,mode property not found\n");
ret = -EINVAL;
goto error;
}
@@ -269,15 +396,14 @@ static int mpc8610_hpcd_probe(struct platform_device *ofdev,
machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT;
machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN;
- /*
- * In i2s-slave mode, the codec has its own clock source, so we
+ /* In i2s-slave mode, the codec has its own clock source, so we
* need to get the frequency from the device tree and pass it to
* the codec driver.
*/
iprop = of_get_property(codec_np, "clock-frequency", NULL);
if (!iprop || !*iprop) {
- dev_err(&ofdev->dev, "codec bus-frequency property "
- "is missing or invalid\n");
+ dev_err(&pdev->dev, "codec bus-frequency "
+ "property is missing or invalid\n");
ret = -EINVAL;
goto error;
}
@@ -311,317 +437,153 @@ static int mpc8610_hpcd_probe(struct platform_device *ofdev,
machine_data->codec_clk_direction = SND_SOC_CLOCK_IN;
machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT;
} else {
- dev_err(&ofdev->dev,
- "unrecognized fsl,mode property \"%s\"\n", sprop);
+ dev_err(&pdev->dev,
+ "unrecognized fsl,mode property '%s'\n", sprop);
ret = -EINVAL;
goto error;
}
if (!machine_data->clk_frequency) {
- dev_err(&ofdev->dev, "unknown clock frequency\n");
+ dev_err(&pdev->dev, "unknown clock frequency\n");
ret = -EINVAL;
goto error;
}
- /* Read the SSI information from the device tree */
- ret = of_address_to_resource(np, 0, &res);
+ /* Find the playback DMA channel to use. */
+ machine_data->dai[0].platform_name = machine_data->platform_name[0];
+ ret = get_dma_channel(np, "fsl,playback-dma", &machine_data->dai[0],
+ &machine_data->dma_channel_id[0],
+ &machine_data->dma_id[0]);
if (ret) {
- dev_err(&ofdev->dev, "could not obtain SSI address\n");
- goto error;
- }
- if (!res.start) {
- dev_err(&ofdev->dev, "invalid SSI address\n");
- goto error;
- }
- ssi_info.ssi_phys = res.start;
-
- machine_data->ssi = ioremap(ssi_info.ssi_phys, sizeof(struct ccsr_ssi));
- if (!machine_data->ssi) {
- dev_err(&ofdev->dev, "could not map SSI address %x\n",
- ssi_info.ssi_phys);
- ret = -EINVAL;
- goto error;
- }
- ssi_info.ssi = machine_data->ssi;
-
-
- /* Get the IRQ of the SSI */
- machine_data->ssi_irq = irq_of_parse_and_map(np, 0);
- if (!machine_data->ssi_irq) {
- dev_err(&ofdev->dev, "could not get SSI IRQ\n");
- ret = -EINVAL;
- goto error;
- }
- ssi_info.irq = machine_data->ssi_irq;
-
- /* Do we want to use asynchronous mode? */
- ssi_info.asynchronous =
- of_find_property(np, "fsl,ssi-asynchronous", NULL) ? 1 : 0;
- if (ssi_info.asynchronous)
- dev_info(&ofdev->dev, "using asynchronous mode\n");
-
- /* Map the global utilities registers. */
- guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts");
- if (!guts_np) {
- dev_err(&ofdev->dev, "could not obtain address of GUTS\n");
- ret = -EINVAL;
- goto error;
- }
- machine_data->guts = of_iomap(guts_np, 0);
- of_node_put(guts_np);
- if (!machine_data->guts) {
- dev_err(&ofdev->dev, "could not map GUTS\n");
- ret = -EINVAL;
- goto error;
- }
-
- /* Find the DMA channels to use. Both SSIs need to use the same DMA
- * controller, so let's use DMA#1.
- */
- for_each_compatible_node(dma_np, NULL, "fsl,mpc8610-dma") {
- iprop = of_get_property(dma_np, "cell-index", NULL);
- if (iprop && (*iprop == 0)) {
- of_node_put(dma_np);
- break;
- }
- }
- if (!dma_np) {
- dev_err(&ofdev->dev, "could not find DMA node\n");
- ret = -EINVAL;
- goto error;
- }
- machine_data->dma_id = *iprop;
-
- /* SSI1 needs to use DMA Channels 0 and 1, and SSI2 needs to use DMA
- * channels 2 and 3. This is just how the MPC8610 is wired
- * internally.
- */
- playback_dma_channel = (machine_data->ssi_id == 0) ? 0 : 2;
- capture_dma_channel = (machine_data->ssi_id == 0) ? 1 : 3;
-
- /*
- * Find the DMA channels to use.
- */
- while ((dma_channel_np = of_get_next_child(dma_np, dma_channel_np))) {
- iprop = of_get_property(dma_channel_np, "cell-index", NULL);
- if (iprop && (*iprop == playback_dma_channel)) {
- /* dma_channel[0] and dma_irq[0] are for playback */
- dma_info.dma_channel[0] = of_iomap(dma_channel_np, 0);
- dma_info.dma_irq[0] =
- irq_of_parse_and_map(dma_channel_np, 0);
- machine_data->dma_channel_id[0] = *iprop;
- continue;
- }
- if (iprop && (*iprop == capture_dma_channel)) {
- /* dma_channel[1] and dma_irq[1] are for capture */
- dma_info.dma_channel[1] = of_iomap(dma_channel_np, 0);
- dma_info.dma_irq[1] =
- irq_of_parse_and_map(dma_channel_np, 0);
- machine_data->dma_channel_id[1] = *iprop;
- continue;
- }
- }
- if (!dma_info.dma_channel[0] || !dma_info.dma_channel[1] ||
- !dma_info.dma_irq[0] || !dma_info.dma_irq[1]) {
- dev_err(&ofdev->dev, "could not find DMA channels\n");
- ret = -EINVAL;
+ dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n");
goto error;
}
- dma_info.ssi_stx_phys = ssi_info.ssi_phys +
- offsetof(struct ccsr_ssi, stx0);
- dma_info.ssi_srx_phys = ssi_info.ssi_phys +
- offsetof(struct ccsr_ssi, srx0);
-
- /* We have the DMA information, so tell the DMA driver what it is */
- if (!fsl_dma_configure(&dma_info)) {
- dev_err(&ofdev->dev, "could not instantiate DMA device\n");
- ret = -EBUSY;
+ /* Find the capture DMA channel to use. */
+ machine_data->dai[1].platform_name = machine_data->platform_name[1];
+ ret = get_dma_channel(np, "fsl,capture-dma", &machine_data->dai[1],
+ &machine_data->dma_channel_id[1],
+ &machine_data->dma_id[1]);
+ if (ret) {
+ dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n");
goto error;
}
- /*
- * Initialize our DAI data structure. We should probably get this
- * information from the device tree.
- */
- machine_data->dai.name = "CS4270";
- machine_data->dai.stream_name = "CS4270";
-
- machine_data->dai.cpu_dai = fsl_ssi_create_dai(&ssi_info);
- machine_data->dai.codec_dai = &cs4270_dai; /* The codec_dai we want */
- machine_data->dai.ops = &mpc8610_hpcd_ops;
+ /* Initialize our DAI data structure. */
+ machine_data->dai[0].stream_name = "playback";
+ machine_data->dai[1].stream_name = "capture";
+ machine_data->dai[0].name = machine_data->dai[0].stream_name;
+ machine_data->dai[1].name = machine_data->dai[1].stream_name;
- machine_data->machine.probe = mpc8610_hpcd_machine_probe;
- machine_data->machine.remove = mpc8610_hpcd_machine_remove;
- machine_data->machine.name = "MPC8610 HPCD";
- machine_data->machine.num_links = 1;
- machine_data->machine.dai_link = &machine_data->dai;
+ machine_data->card.probe = mpc8610_hpcd_machine_probe;
+ machine_data->card.remove = mpc8610_hpcd_machine_remove;
+ machine_data->card.name = pdev->name; /* The platform driver name */
+ machine_data->card.num_links = 2;
+ machine_data->card.dai_link = machine_data->dai;
/* Allocate a new audio platform device structure */
sound_device = platform_device_alloc("soc-audio", -1);
if (!sound_device) {
- dev_err(&ofdev->dev, "platform device allocation failed\n");
+ dev_err(&pdev->dev, "platform device alloc failed\n");
ret = -ENOMEM;
goto error;
}
- machine_data->sound_devdata.card = &machine_data->machine;
- machine_data->sound_devdata.codec_dev = &soc_codec_device_cs4270;
- machine_data->machine.platform = &fsl_soc_platform;
-
- sound_device->dev.platform_data = machine_data;
-
+ /* Associate the card data with the sound device */
+ platform_set_drvdata(sound_device, &machine_data->card);
- /* Set the platform device and ASoC device to point to each other */
- platform_set_drvdata(sound_device, &machine_data->sound_devdata);
-
- machine_data->sound_devdata.dev = &sound_device->dev;
-
-
- /* Tell ASoC to probe us. This will call mpc8610_hpcd_machine.probe(),
- if it exists. */
+ /* Register with ASoC */
ret = platform_device_add(sound_device);
-
if (ret) {
- dev_err(&ofdev->dev, "platform device add failed\n");
+ dev_err(&pdev->dev, "platform device add failed\n");
goto error;
}
- dev_set_drvdata(&ofdev->dev, sound_device);
+ of_node_put(codec_np);
return 0;
error:
of_node_put(codec_np);
- of_node_put(guts_np);
- of_node_put(dma_np);
- of_node_put(dma_channel_np);
if (sound_device)
platform_device_unregister(sound_device);
- if (machine_data->dai.cpu_dai)
- fsl_ssi_destroy_dai(machine_data->dai.cpu_dai);
-
- if (ssi_info.ssi)
- iounmap(ssi_info.ssi);
-
- if (ssi_info.irq)
- irq_dispose_mapping(ssi_info.irq);
-
- if (dma_info.dma_channel[0])
- iounmap(dma_info.dma_channel[0]);
-
- if (dma_info.dma_channel[1])
- iounmap(dma_info.dma_channel[1]);
-
- if (dma_info.dma_irq[0])
- irq_dispose_mapping(dma_info.dma_irq[0]);
-
- if (dma_info.dma_irq[1])
- irq_dispose_mapping(dma_info.dma_irq[1]);
-
- if (machine_data->guts)
- iounmap(machine_data->guts);
-
kfree(machine_data);
return ret;
}
/**
- * mpc8610_hpcd_remove: remove the OF device
+ * mpc8610_hpcd_remove: remove the platform device
*
- * This function is called when the OF device is removed.
+ * This function is called when the platform device is removed.
*/
-static int mpc8610_hpcd_remove(struct platform_device *ofdev)
+static int __devexit mpc8610_hpcd_remove(struct platform_device *pdev)
{
- struct platform_device *sound_device = dev_get_drvdata(&ofdev->dev);
+ struct platform_device *sound_device = dev_get_drvdata(&pdev->dev);
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
struct mpc8610_hpcd_data *machine_data =
- sound_device->dev.platform_data;
+ container_of(card, struct mpc8610_hpcd_data, card);
platform_device_unregister(sound_device);
- if (machine_data->dai.cpu_dai)
- fsl_ssi_destroy_dai(machine_data->dai.cpu_dai);
-
- if (machine_data->ssi)
- iounmap(machine_data->ssi);
-
- if (machine_data->dma[0])
- iounmap(machine_data->dma[0]);
-
- if (machine_data->dma[1])
- iounmap(machine_data->dma[1]);
-
- if (machine_data->dma_irq[0])
- irq_dispose_mapping(machine_data->dma_irq[0]);
-
- if (machine_data->dma_irq[1])
- irq_dispose_mapping(machine_data->dma_irq[1]);
-
- if (machine_data->guts)
- iounmap(machine_data->guts);
-
kfree(machine_data);
sound_device->dev.platform_data = NULL;
- dev_set_drvdata(&ofdev->dev, NULL);
+ dev_set_drvdata(&pdev->dev, NULL);
return 0;
}
-static struct of_device_id mpc8610_hpcd_match[] = {
- {
- .compatible = "fsl,mpc8610-ssi",
- },
- {}
-};
-MODULE_DEVICE_TABLE(of, mpc8610_hpcd_match);
-
-static struct of_platform_driver mpc8610_hpcd_of_driver = {
+static struct platform_driver mpc8610_hpcd_driver = {
+ .probe = mpc8610_hpcd_probe,
+ .remove = __devexit_p(mpc8610_hpcd_remove),
.driver = {
- .name = "mpc8610_hpcd",
+ /* The name must match the 'model' property in the device tree,
+ * in lowercase letters.
+ */
+ .name = "snd-soc-mpc8610hpcd",
.owner = THIS_MODULE,
- .of_match_table = mpc8610_hpcd_match,
},
- .probe = mpc8610_hpcd_probe,
- .remove = mpc8610_hpcd_remove,
};
/**
- * mpc8610_hpcd_init: fabric driver initialization.
+ * mpc8610_hpcd_init: machine driver initialization.
*
* This function is called when this module is loaded.
*/
static int __init mpc8610_hpcd_init(void)
{
- int ret;
-
- printk(KERN_INFO "Freescale MPC8610 HPCD ALSA SoC fabric driver\n");
+ struct device_node *guts_np;
+ struct resource res;
- ret = of_register_platform_driver(&mpc8610_hpcd_of_driver);
+ pr_info("Freescale MPC8610 HPCD ALSA SoC machine driver\n");
- if (ret)
- printk(KERN_ERR
- "mpc8610-hpcd: failed to register platform driver\n");
+ /* Get the physical address of the global utilities registers */
+ guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts");
+ if (of_address_to_resource(guts_np, 0, &res)) {
+ pr_err("mpc8610-hpcd: missing/invalid global utilities node\n");
+ return -EINVAL;
+ }
+ guts_phys = res.start;
- return ret;
+ return platform_driver_register(&mpc8610_hpcd_driver);
}
/**
- * mpc8610_hpcd_exit: fabric driver exit
+ * mpc8610_hpcd_exit: machine driver exit
*
* This function is called when this driver is unloaded.
*/
static void __exit mpc8610_hpcd_exit(void)
{
- of_unregister_platform_driver(&mpc8610_hpcd_of_driver);
+ platform_driver_unregister(&mpc8610_hpcd_driver);
}
module_init(mpc8610_hpcd_init);
module_exit(mpc8610_hpcd_exit);
MODULE_AUTHOR("Timur Tabi <timur@freescale.com>");
-MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC fabric driver");
-MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC machine driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c
new file mode 100644
index 000000000000..63b9eaa1ebc2
--- /dev/null
+++ b/sound/soc/fsl/p1022_ds.c
@@ -0,0 +1,591 @@
+/**
+ * Freescale P1022DS ALSA SoC Machine driver
+ *
+ * Author: Timur Tabi <timur@freescale.com>
+ *
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/of_device.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <asm/fsl_guts.h>
+
+#include "fsl_dma.h"
+#include "fsl_ssi.h"
+
+/* P1022-specific PMUXCR and DMUXCR bit definitions */
+
+#define CCSR_GUTS_PMUXCR_UART0_I2C1_MASK 0x0001c000
+#define CCSR_GUTS_PMUXCR_UART0_I2C1_UART0_SSI 0x00010000
+#define CCSR_GUTS_PMUXCR_UART0_I2C1_SSI 0x00018000
+
+#define CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK 0x00000c00
+#define CCSR_GUTS_PMUXCR_SSI_DMA_TDM_SSI 0x00000000
+
+#define CCSR_GUTS_DMUXCR_PAD 1 /* DMA controller/channel set to pad */
+#define CCSR_GUTS_DMUXCR_SSI 2 /* DMA controller/channel set to SSI */
+
+/*
+ * Set the DMACR register in the GUTS
+ *
+ * The DMACR register determines the source of initiated transfers for each
+ * channel on each DMA controller. Rather than have a bunch of repetitive
+ * macros for the bit patterns, we just have a function that calculates
+ * them.
+ *
+ * guts: Pointer to GUTS structure
+ * co: The DMA controller (0 or 1)
+ * ch: The channel on the DMA controller (0, 1, 2, or 3)
+ * device: The device to set as the target (CCSR_GUTS_DMUXCR_xxx)
+ */
+static inline void guts_set_dmuxcr(struct ccsr_guts_85xx __iomem *guts,
+ unsigned int co, unsigned int ch, unsigned int device)
+{
+ unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch));
+
+ clrsetbits_be32(&guts->dmuxcr, 3 << shift, device << shift);
+}
+
+/* There's only one global utilities register */
+static phys_addr_t guts_phys;
+
+#define DAI_NAME_SIZE 32
+
+/**
+ * machine_data: machine-specific ASoC device data
+ *
+ * This structure contains data for a single sound platform device on an
+ * P1022 DS. Some of the data is taken from the device tree.
+ */
+struct machine_data {
+ struct snd_soc_dai_link dai[2];
+ struct snd_soc_card card;
+ unsigned int dai_format;
+ unsigned int codec_clk_direction;
+ unsigned int cpu_clk_direction;
+ unsigned int clk_frequency;
+ unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */
+ unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */
+ unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/
+ char codec_name[DAI_NAME_SIZE];
+ char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */
+};
+
+/**
+ * p1022_ds_machine_probe: initialize the board
+ *
+ * This function is used to initialize the board-specific hardware.
+ *
+ * Here we program the DMACR and PMUXCR registers.
+ */
+static int p1022_ds_machine_probe(struct platform_device *sound_device)
+{
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
+ struct machine_data *mdata =
+ container_of(card, struct machine_data, card);
+ struct ccsr_guts_85xx __iomem *guts;
+
+ guts = ioremap(guts_phys, sizeof(struct ccsr_guts_85xx));
+ if (!guts) {
+ dev_err(card->dev, "could not map global utilities\n");
+ return -ENOMEM;
+ }
+
+ /* Enable SSI Tx signal */
+ clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_UART0_I2C1_MASK,
+ CCSR_GUTS_PMUXCR_UART0_I2C1_UART0_SSI);
+
+ /* Enable SSI Rx signal */
+ clrsetbits_be32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK,
+ CCSR_GUTS_PMUXCR_SSI_DMA_TDM_SSI);
+
+ /* Enable DMA Channel for SSI */
+ guts_set_dmuxcr(guts, mdata->dma_id[0], mdata->dma_channel_id[0],
+ CCSR_GUTS_DMUXCR_SSI);
+
+ guts_set_dmuxcr(guts, mdata->dma_id[1], mdata->dma_channel_id[1],
+ CCSR_GUTS_DMUXCR_SSI);
+
+ iounmap(guts);
+
+ return 0;
+}
+
+/**
+ * p1022_ds_startup: program the board with various hardware parameters
+ *
+ * This function takes board-specific information, like clock frequencies
+ * and serial data formats, and passes that information to the codec and
+ * transport drivers.
+ */
+static int p1022_ds_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct machine_data *mdata =
+ container_of(rtd->card, struct machine_data, card);
+ struct device *dev = rtd->card->dev;
+ int ret = 0;
+
+ /* Tell the codec driver what the serial protocol is. */
+ ret = snd_soc_dai_set_fmt(rtd->codec_dai, mdata->dai_format);
+ if (ret < 0) {
+ dev_err(dev, "could not set codec driver audio format\n");
+ return ret;
+ }
+
+ /*
+ * Tell the codec driver what the MCLK frequency is, and whether it's
+ * a slave or master.
+ */
+ ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0, mdata->clk_frequency,
+ mdata->codec_clk_direction);
+ if (ret < 0) {
+ dev_err(dev, "could not set codec driver clock params\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * p1022_ds_machine_remove: Remove the sound device
+ *
+ * This function is called to remove the sound device for one SSI. We
+ * de-program the DMACR and PMUXCR register.
+ */
+static int p1022_ds_machine_remove(struct platform_device *sound_device)
+{
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
+ struct machine_data *mdata =
+ container_of(card, struct machine_data, card);
+ struct ccsr_guts_85xx __iomem *guts;
+
+ guts = ioremap(guts_phys, sizeof(struct ccsr_guts_85xx));
+ if (!guts) {
+ dev_err(card->dev, "could not map global utilities\n");
+ return -ENOMEM;
+ }
+
+ /* Restore the signal routing */
+ clrbits32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_UART0_I2C1_MASK);
+ clrbits32(&guts->pmuxcr, CCSR_GUTS_PMUXCR_SSI_DMA_TDM_MASK);
+ guts_set_dmuxcr(guts, mdata->dma_id[0], mdata->dma_channel_id[0], 0);
+ guts_set_dmuxcr(guts, mdata->dma_id[1], mdata->dma_channel_id[1], 0);
+
+ iounmap(guts);
+
+ return 0;
+}
+
+/**
+ * p1022_ds_ops: ASoC machine driver operations
+ */
+static struct snd_soc_ops p1022_ds_ops = {
+ .startup = p1022_ds_startup,
+};
+
+/**
+ * get_node_by_phandle_name - get a node by its phandle name
+ *
+ * This function takes a node, the name of a property in that node, and a
+ * compatible string. Assuming the property is a phandle to another node,
+ * it returns that node, (optionally) if that node is compatible.
+ *
+ * If the property is not a phandle, or the node it points to is not compatible
+ * with the specific string, then NULL is returned.
+ */
+static struct device_node *get_node_by_phandle_name(struct device_node *np,
+ const char *name, const char *compatible)
+{
+ np = of_parse_phandle(np, name, 0);
+ if (!np)
+ return NULL;
+
+ if (!of_device_is_compatible(np, compatible)) {
+ of_node_put(np);
+ return NULL;
+ }
+
+ return np;
+}
+
+/**
+ * get_parent_cell_index -- return the cell-index of the parent of a node
+ *
+ * Return the value of the cell-index property of the parent of the given
+ * node. This is used for DMA channel nodes that need to know the DMA ID
+ * of the controller they are on.
+ */
+static int get_parent_cell_index(struct device_node *np)
+{
+ struct device_node *parent = of_get_parent(np);
+ const u32 *iprop;
+ int ret = -1;
+
+ if (!parent)
+ return -1;
+
+ iprop = of_get_property(parent, "cell-index", NULL);
+ if (iprop)
+ ret = *iprop;
+
+ of_node_put(parent);
+
+ return ret;
+}
+
+/**
+ * codec_node_dev_name - determine the dev_name for a codec node
+ *
+ * This function determines the dev_name for an I2C node. This is the name
+ * that would be returned by dev_name() if this device_node were part of a
+ * 'struct device' It's ugly and hackish, but it works.
+ *
+ * The dev_name for such devices include the bus number and I2C address. For
+ * example, "cs4270-codec.0-004f".
+ */
+static int codec_node_dev_name(struct device_node *np, char *buf, size_t len)
+{
+ const u32 *iprop;
+ int bus, addr;
+ char temp[DAI_NAME_SIZE];
+
+ of_modalias_node(np, temp, DAI_NAME_SIZE);
+
+ iprop = of_get_property(np, "reg", NULL);
+ if (!iprop)
+ return -EINVAL;
+
+ addr = *iprop;
+
+ bus = get_parent_cell_index(np);
+ if (bus < 0)
+ return bus;
+
+ snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr);
+
+ return 0;
+}
+
+static int get_dma_channel(struct device_node *ssi_np,
+ const char *compatible,
+ struct snd_soc_dai_link *dai,
+ unsigned int *dma_channel_id,
+ unsigned int *dma_id)
+{
+ struct resource res;
+ struct device_node *dma_channel_np;
+ const u32 *iprop;
+ int ret;
+
+ dma_channel_np = get_node_by_phandle_name(ssi_np, compatible,
+ "fsl,ssi-dma-channel");
+ if (!dma_channel_np)
+ return -EINVAL;
+
+ /* Determine the dev_name for the device_node. This code mimics the
+ * behavior of of_device_make_bus_id(). We need this because ASoC uses
+ * the dev_name() of the device to match the platform (DMA) device with
+ * the CPU (SSI) device. It's all ugly and hackish, but it works (for
+ * now).
+ *
+ * dai->platform name should already point to an allocated buffer.
+ */
+ ret = of_address_to_resource(dma_channel_np, 0, &res);
+ if (ret)
+ return ret;
+ snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s",
+ (unsigned long long) res.start, dma_channel_np->name);
+
+ iprop = of_get_property(dma_channel_np, "cell-index", NULL);
+ if (!iprop) {
+ of_node_put(dma_channel_np);
+ return -EINVAL;
+ }
+
+ *dma_channel_id = *iprop;
+ *dma_id = get_parent_cell_index(dma_channel_np);
+ of_node_put(dma_channel_np);
+
+ return 0;
+}
+
+/**
+ * p1022_ds_probe: platform probe function for the machine driver
+ *
+ * Although this is a machine driver, the SSI node is the "master" node with
+ * respect to audio hardware connections. Therefore, we create a new ASoC
+ * device for each new SSI node that has a codec attached.
+ */
+static int p1022_ds_probe(struct platform_device *pdev)
+{
+ struct device *dev = pdev->dev.parent;
+ /* ssi_pdev is the platform device for the SSI node that probed us */
+ struct platform_device *ssi_pdev =
+ container_of(dev, struct platform_device, dev);
+ struct device_node *np = ssi_pdev->dev.of_node;
+ struct device_node *codec_np = NULL;
+ struct platform_device *sound_device = NULL;
+ struct machine_data *mdata;
+ int ret = -ENODEV;
+ const char *sprop;
+ const u32 *iprop;
+
+ /* Find the codec node for this SSI. */
+ codec_np = of_parse_phandle(np, "codec-handle", 0);
+ if (!codec_np) {
+ dev_err(dev, "could not find codec node\n");
+ return -EINVAL;
+ }
+
+ mdata = kzalloc(sizeof(struct machine_data), GFP_KERNEL);
+ if (!mdata) {
+ ret = -ENOMEM;
+ goto error_put;
+ }
+
+ mdata->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev);
+ mdata->dai[0].ops = &p1022_ds_ops;
+
+ /* Determine the codec name, it will be used as the codec DAI name */
+ ret = codec_node_dev_name(codec_np, mdata->codec_name, DAI_NAME_SIZE);
+ if (ret) {
+ dev_err(&pdev->dev, "invalid codec node %s\n",
+ codec_np->full_name);
+ ret = -EINVAL;
+ goto error;
+ }
+ mdata->dai[0].codec_name = mdata->codec_name;
+
+ /* We register two DAIs per SSI, one for playback and the other for
+ * capture. We support codecs that have separate DAIs for both playback
+ * and capture.
+ */
+ memcpy(&mdata->dai[1], &mdata->dai[0], sizeof(struct snd_soc_dai_link));
+
+ /* The DAI names from the codec (snd_soc_dai_driver.name) */
+ mdata->dai[0].codec_dai_name = "wm8776-hifi-playback";
+ mdata->dai[1].codec_dai_name = "wm8776-hifi-capture";
+
+ /* Get the device ID */
+ iprop = of_get_property(np, "cell-index", NULL);
+ if (!iprop) {
+ dev_err(&pdev->dev, "cell-index property not found\n");
+ ret = -EINVAL;
+ goto error;
+ }
+ mdata->ssi_id = *iprop;
+
+ /* Get the serial format and clock direction. */
+ sprop = of_get_property(np, "fsl,mode", NULL);
+ if (!sprop) {
+ dev_err(&pdev->dev, "fsl,mode property not found\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ if (strcasecmp(sprop, "i2s-slave") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_I2S;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_OUT;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_IN;
+
+ /* In i2s-slave mode, the codec has its own clock source, so we
+ * need to get the frequency from the device tree and pass it to
+ * the codec driver.
+ */
+ iprop = of_get_property(codec_np, "clock-frequency", NULL);
+ if (!iprop || !*iprop) {
+ dev_err(&pdev->dev, "codec bus-frequency "
+ "property is missing or invalid\n");
+ ret = -EINVAL;
+ goto error;
+ }
+ mdata->clk_frequency = *iprop;
+ } else if (strcasecmp(sprop, "i2s-master") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_I2S;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_IN;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT;
+ } else if (strcasecmp(sprop, "lj-slave") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_LEFT_J;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_OUT;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_IN;
+ } else if (strcasecmp(sprop, "lj-master") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_LEFT_J;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_IN;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT;
+ } else if (strcasecmp(sprop, "rj-slave") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_RIGHT_J;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_OUT;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_IN;
+ } else if (strcasecmp(sprop, "rj-master") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_RIGHT_J;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_IN;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT;
+ } else if (strcasecmp(sprop, "ac97-slave") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_AC97;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_OUT;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_IN;
+ } else if (strcasecmp(sprop, "ac97-master") == 0) {
+ mdata->dai_format = SND_SOC_DAIFMT_AC97;
+ mdata->codec_clk_direction = SND_SOC_CLOCK_IN;
+ mdata->cpu_clk_direction = SND_SOC_CLOCK_OUT;
+ } else {
+ dev_err(&pdev->dev,
+ "unrecognized fsl,mode property '%s'\n", sprop);
+ ret = -EINVAL;
+ goto error;
+ }
+
+ if (!mdata->clk_frequency) {
+ dev_err(&pdev->dev, "unknown clock frequency\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ /* Find the playback DMA channel to use. */
+ mdata->dai[0].platform_name = mdata->platform_name[0];
+ ret = get_dma_channel(np, "fsl,playback-dma", &mdata->dai[0],
+ &mdata->dma_channel_id[0],
+ &mdata->dma_id[0]);
+ if (ret) {
+ dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n");
+ goto error;
+ }
+
+ /* Find the capture DMA channel to use. */
+ mdata->dai[1].platform_name = mdata->platform_name[1];
+ ret = get_dma_channel(np, "fsl,capture-dma", &mdata->dai[1],
+ &mdata->dma_channel_id[1],
+ &mdata->dma_id[1]);
+ if (ret) {
+ dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n");
+ goto error;
+ }
+
+ /* Initialize our DAI data structure. */
+ mdata->dai[0].stream_name = "playback";
+ mdata->dai[1].stream_name = "capture";
+ mdata->dai[0].name = mdata->dai[0].stream_name;
+ mdata->dai[1].name = mdata->dai[1].stream_name;
+
+ mdata->card.probe = p1022_ds_machine_probe;
+ mdata->card.remove = p1022_ds_machine_remove;
+ mdata->card.name = pdev->name; /* The platform driver name */
+ mdata->card.num_links = 2;
+ mdata->card.dai_link = mdata->dai;
+
+ /* Allocate a new audio platform device structure */
+ sound_device = platform_device_alloc("soc-audio", -1);
+ if (!sound_device) {
+ dev_err(&pdev->dev, "platform device alloc failed\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ /* Associate the card data with the sound device */
+ platform_set_drvdata(sound_device, &mdata->card);
+
+ /* Register with ASoC */
+ ret = platform_device_add(sound_device);
+ if (ret) {
+ dev_err(&pdev->dev, "platform device add failed\n");
+ goto error;
+ }
+
+ of_node_put(codec_np);
+
+ return 0;
+
+error:
+ if (sound_device)
+ platform_device_unregister(sound_device);
+
+ kfree(mdata);
+error_put:
+ of_node_put(codec_np);
+ return ret;
+}
+
+/**
+ * p1022_ds_remove: remove the platform device
+ *
+ * This function is called when the platform device is removed.
+ */
+static int __devexit p1022_ds_remove(struct platform_device *pdev)
+{
+ struct platform_device *sound_device = dev_get_drvdata(&pdev->dev);
+ struct snd_soc_card *card = platform_get_drvdata(sound_device);
+ struct machine_data *mdata =
+ container_of(card, struct machine_data, card);
+
+ platform_device_unregister(sound_device);
+
+ kfree(mdata);
+ sound_device->dev.platform_data = NULL;
+
+ dev_set_drvdata(&pdev->dev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver p1022_ds_driver = {
+ .probe = p1022_ds_probe,
+ .remove = __devexit_p(p1022_ds_remove),
+ .driver = {
+ /* The name must match the 'model' property in the device tree,
+ * in lowercase letters, but only the part after that last
+ * comma. This is because some model properties have a "fsl,"
+ * prefix.
+ */
+ .name = "snd-soc-p1022",
+ .owner = THIS_MODULE,
+ },
+};
+
+/**
+ * p1022_ds_init: machine driver initialization.
+ *
+ * This function is called when this module is loaded.
+ */
+static int __init p1022_ds_init(void)
+{
+ struct device_node *guts_np;
+ struct resource res;
+
+ pr_info("Freescale P1022 DS ALSA SoC machine driver\n");
+
+ /* Get the physical address of the global utilities registers */
+ guts_np = of_find_compatible_node(NULL, NULL, "fsl,p1022-guts");
+ if (of_address_to_resource(guts_np, 0, &res)) {
+ pr_err("p1022-ds: missing/invalid global utilities node\n");
+ return -EINVAL;
+ }
+ guts_phys = res.start;
+ of_node_put(guts_np);
+
+ return platform_driver_register(&p1022_ds_driver);
+}
+
+/**
+ * p1022_ds_exit: machine driver exit
+ *
+ * This function is called when this driver is unloaded.
+ */
+static void __exit p1022_ds_exit(void)
+{
+ platform_driver_unregister(&p1022_ds_driver);
+}
+
+module_init(p1022_ds_init);
+module_exit(p1022_ds_exit);
+
+MODULE_AUTHOR("Timur Tabi <timur@freescale.com>");
+MODULE_DESCRIPTION("Freescale P1022 DS ALSA SoC machine driver");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/fsl/pcm030-audio-fabric.c b/sound/soc/fsl/pcm030-audio-fabric.c
index 6644cba7cbf2..fe15bb26e484 100644
--- a/sound/soc/fsl/pcm030-audio-fabric.c
+++ b/sound/soc/fsl/pcm030-audio-fabric.c
@@ -32,21 +32,24 @@
#define DRV_NAME "pcm030-audio-fabric"
-static struct snd_soc_device device;
static struct snd_soc_card card;
static struct snd_soc_dai_link pcm030_fabric_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 Analog",
- .codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
- .cpu_dai = &psc_ac97_dai[MPC5200_AC97_NORMAL],
+ .codec_dai_name = "wm9712-hifi",
+ .cpu_dai_name = "mpc5200-psc-ac97.0",
+ .platform_name = "mpc5200-pcm-audio",
+ .codec_name = "wm9712-codec",
},
{
.name = "AC97",
.stream_name = "AC97 IEC958",
- .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
- .cpu_dai = &psc_ac97_dai[MPC5200_AC97_SPDIF],
+ .codec_dai_name = "wm9712-aux",
+ .cpu_dai_name = "mpc5200-psc-ac97.1",
+ .platform_name = "mpc5200-pcm-audio",
+ ..codec_name = "wm9712-codec",
},
};
@@ -58,22 +61,18 @@ static __init int pcm030_fabric_init(void)
if (!of_machine_is_compatible("phytec,pcm030"))
return -ENODEV;
- card.platform = &mpc5200_audio_dma_platform;
+
card.name = "pcm030";
card.dai_link = pcm030_fabric_dai;
card.num_links = ARRAY_SIZE(pcm030_fabric_dai);
- device.card = &card;
- device.codec_dev = &soc_codec_dev_wm9712;
-
pdev = platform_device_alloc("soc-audio", 1);
if (!pdev) {
pr_err("pcm030_fabric_init: platform_device_alloc() failed\n");
return -ENODEV;
}
- platform_set_drvdata(pdev, &device);
- device.dev = &pdev->dev;
+ platform_set_drvdata(pdev, &card);
rc = platform_device_add(pdev);
if (rc) {
diff --git a/sound/soc/fsl/soc-of-simple.c b/sound/soc/fsl/soc-of-simple.c
deleted file mode 100644
index 3bc13fd89096..000000000000
--- a/sound/soc/fsl/soc-of-simple.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * OF helpers for ALSA SoC Layer
- *
- * Copyright (C) 2008, Secret Lab Technologies Ltd.
- */
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/pm.h>
-#include <linux/bitops.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <sound/core.h>
-#include <sound/pcm.h>
-#include <sound/pcm_params.h>
-#include <sound/soc.h>
-#include <sound/soc-of-simple.h>
-#include <sound/initval.h>
-
-MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("ALSA SoC OpenFirmware bindings");
-
-static DEFINE_MUTEX(of_snd_soc_mutex);
-static LIST_HEAD(of_snd_soc_device_list);
-static int of_snd_soc_next_index;
-
-struct of_snd_soc_device {
- int id;
- struct list_head list;
- struct snd_soc_device device;
- struct snd_soc_card card;
- struct snd_soc_dai_link dai_link;
- struct platform_device *pdev;
- struct device_node *platform_node;
- struct device_node *codec_node;
-};
-
-static struct snd_soc_ops of_snd_soc_ops = {
-};
-
-static struct of_snd_soc_device *
-of_snd_soc_get_device(struct device_node *codec_node)
-{
- struct of_snd_soc_device *of_soc;
-
- list_for_each_entry(of_soc, &of_snd_soc_device_list, list) {
- if (of_soc->codec_node == codec_node)
- return of_soc;
- }
-
- of_soc = kzalloc(sizeof(struct of_snd_soc_device), GFP_KERNEL);
- if (!of_soc)
- return NULL;
-
- /* Initialize the structure and add it to the global list */
- of_soc->codec_node = codec_node;
- of_soc->id = of_snd_soc_next_index++;
- of_soc->card.dai_link = &of_soc->dai_link;
- of_soc->card.num_links = 1;
- of_soc->device.card = &of_soc->card;
- of_soc->dai_link.ops = &of_snd_soc_ops;
- list_add(&of_soc->list, &of_snd_soc_device_list);
-
- return of_soc;
-}
-
-static void of_snd_soc_register_device(struct of_snd_soc_device *of_soc)
-{
- struct platform_device *pdev;
- int rc;
-
- /* Only register the device if both the codec and platform have
- * been registered */
- if ((!of_soc->device.codec_data) || (!of_soc->platform_node))
- return;
-
- pr_info("platform<-->codec match achieved; registering machine\n");
-
- pdev = platform_device_alloc("soc-audio", of_soc->id);
- if (!pdev) {
- pr_err("of_soc: platform_device_alloc() failed\n");
- return;
- }
-
- pdev->dev.platform_data = of_soc;
- platform_set_drvdata(pdev, &of_soc->device);
- of_soc->device.dev = &pdev->dev;
-
- /* The ASoC device is complete; register it */
- rc = platform_device_add(pdev);
- if (rc) {
- pr_err("of_soc: platform_device_add() failed\n");
- return;
- }
-
-}
-
-int of_snd_soc_register_codec(struct snd_soc_codec_device *codec_dev,
- void *codec_data, struct snd_soc_dai *dai,
- struct device_node *node)
-{
- struct of_snd_soc_device *of_soc;
- int rc = 0;
-
- pr_info("registering ASoC codec driver: %s\n", node->full_name);
-
- mutex_lock(&of_snd_soc_mutex);
- of_soc = of_snd_soc_get_device(node);
- if (!of_soc) {
- rc = -ENOMEM;
- goto out;
- }
-
- /* Store the codec data */
- of_soc->device.codec_data = codec_data;
- of_soc->device.codec_dev = codec_dev;
- of_soc->dai_link.name = (char *)node->name;
- of_soc->dai_link.stream_name = (char *)node->name;
- of_soc->dai_link.codec_dai = dai;
-
- /* Now try to register the SoC device */
- of_snd_soc_register_device(of_soc);
-
- out:
- mutex_unlock(&of_snd_soc_mutex);
- return rc;
-}
-EXPORT_SYMBOL_GPL(of_snd_soc_register_codec);
-
-int of_snd_soc_register_platform(struct snd_soc_platform *platform,
- struct device_node *node,
- struct snd_soc_dai *cpu_dai)
-{
- struct of_snd_soc_device *of_soc;
- struct device_node *codec_node;
- const phandle *handle;
- int len, rc = 0;
-
- pr_info("registering ASoC platform driver: %s\n", node->full_name);
-
- handle = of_get_property(node, "codec-handle", &len);
- if (!handle || len < sizeof(handle))
- return -ENODEV;
- codec_node = of_find_node_by_phandle(*handle);
- if (!codec_node)
- return -ENODEV;
- pr_info("looking for codec: %s\n", codec_node->full_name);
-
- mutex_lock(&of_snd_soc_mutex);
- of_soc = of_snd_soc_get_device(codec_node);
- if (!of_soc) {
- rc = -ENOMEM;
- goto out;
- }
-
- of_soc->platform_node = node;
- of_soc->dai_link.cpu_dai = cpu_dai;
- of_soc->card.platform = platform;
- of_soc->card.name = of_soc->dai_link.cpu_dai->name;
-
- /* Now try to register the SoC device */
- of_snd_soc_register_device(of_soc);
-
- out:
- mutex_unlock(&of_snd_soc_mutex);
- return rc;
-}
-EXPORT_SYMBOL_GPL(of_snd_soc_register_platform);