add idl4k kernel firmware version 1.13.0.105

kernel/sound/soc/blackfin/Kconfig

@@ -0,0 +1,138 @@
+config SND_BF5XX_I2S
+	tristate "SoC I2S Audio for the ADI BF5xx chip"
+	depends on BLACKFIN
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the Blackfin SPORT (synchronous serial ports) interface in I2S
+	  mode (supports single stereo In/Out).
+	  You will also need to select the audio interfaces to support below.
+
+config SND_BF5XX_SOC_SSM2602
+	tristate "SoC SSM2602 Audio support for BF52x ezkit"
+	depends on SND_BF5XX_I2S
+	select SND_BF5XX_SOC_I2S
+	select SND_SOC_SSM2602
+	select I2C
+	help
+	  Say Y if you want to add support for SoC audio on BF527-EZKIT.
+
+config SND_BF5XX_SOC_AD73311
+	tristate "SoC AD73311 Audio support for Blackfin"
+	depends on SND_BF5XX_I2S
+	select SND_BF5XX_SOC_I2S
+	select SND_SOC_AD73311
+	help
+	  Say Y if you want to add support for AD73311 codec on Blackfin.
+
+config SND_BFIN_AD73311_SE
+	int "PF pin for AD73311L Chip Select"
+	depends on SND_BF5XX_SOC_AD73311
+	default 4
+	help
+	  Enter the GPIO used to control AD73311's SE pin. Acceptable
+	  values are 0 to 7
+
+config SND_BF5XX_TDM
+	tristate "SoC I2S(TDM mode) Audio for the ADI BF5xx chip"
+	depends on (BLACKFIN && SND_SOC)
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the Blackfin SPORT (synchronous serial ports) interface in TDM
+	  mode.
+	  You will also need to select the audio interfaces to support below.
+
+config SND_BF5XX_SOC_AD1836
+	tristate "SoC AD1836 Audio support for BF5xx"
+	depends on SND_BF5XX_TDM
+	select SND_BF5XX_SOC_TDM
+	select SND_SOC_AD1836
+	help
+	  Say Y if you want to add support for SoC audio on BF5xx STAMP/EZKIT.
+
+config SND_BF5XX_SOC_AD1938
+	tristate "SoC AD1938 Audio support for Blackfin"
+	depends on SND_BF5XX_TDM
+	select SND_BF5XX_SOC_TDM
+	select SND_SOC_AD1938
+	help
+	  Say Y if you want to add support for AD1938 codec on Blackfin.
+
+config SND_BF5XX_AC97
+	tristate "SoC AC97 Audio for the ADI BF5xx chip"
+	depends on BLACKFIN
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the Blackfin SPORT (synchronous serial ports) interface in slot 16
+	  mode (pseudo AC97 interface).
+	  You will also need to select the audio interfaces to support below.
+
+	  Note:
+	  AC97 codecs which do not implement the slot-16 mode will not function
+	  properly with this driver. This driver is known to work with the
+	  Analog Devices line of AC97 codecs.
+
+config SND_BF5XX_MMAP_SUPPORT
+	bool "Enable MMAP Support"
+	depends on SND_BF5XX_AC97
+	default y
+	help
+	  Say y if you want AC97 driver to support mmap mode.
+	  We introduce an intermediate buffer to simulate mmap.
+
+config SND_BF5XX_MULTICHAN_SUPPORT
+	bool "Enable Multichannel Support"
+	depends on SND_BF5XX_AC97
+	default n
+	help
+	  Say y if you want AC97 driver to support up to 5.1 channel audio.
+	  this mode will consume much more memory for DMA.
+
+config SND_BF5XX_HAVE_COLD_RESET
+	bool "BOARD has COLD Reset GPIO"
+	depends on SND_BF5XX_AC97
+	default y if BFIN548_EZKIT
+	default n if !BFIN548_EZKIT
+
+config SND_BF5XX_RESET_GPIO_NUM
+	int "Set a GPIO for cold reset"
+	depends on SND_BF5XX_HAVE_COLD_RESET
+	range 0 159
+	default 19 if BFIN548_EZKIT
+	default 5 if BFIN537_STAMP
+	default 0
+	help
+	  Set the correct GPIO for RESET the sound chip.
+
+config SND_BF5XX_SOC_AD1980
+	tristate "SoC AD1980/1 Audio support for BF5xx"
+	depends on SND_BF5XX_AC97
+	select SND_BF5XX_SOC_AC97
+	select SND_SOC_AD1980
+	help
+	  Say Y if you want to add support for SoC audio on BF5xx STAMP/EZKIT.
+
+config SND_BF5XX_SOC_SPORT
+	tristate
+
+config SND_BF5XX_SOC_I2S
+	tristate
+	select SND_BF5XX_SOC_SPORT
+
+config SND_BF5XX_SOC_TDM
+	tristate
+	select SND_BF5XX_SOC_SPORT
+
+config SND_BF5XX_SOC_AC97
+	tristate
+	select AC97_BUS
+	select SND_SOC_AC97_BUS
+	select SND_BF5XX_SOC_SPORT
+
+config SND_BF5XX_SPORT_NUM
+	int "Set a SPORT for Sound chip"
+	depends on (SND_BF5XX_I2S || SND_BF5XX_AC97 || SND_BF5XX_TDM)
+	range 0 3 if BF54x
+	range 0 1 if !BF54x
+	default 0
+	help
+	  Set the correct SPORT for sound chip.

kernel/sound/soc/blackfin/Makefile

@@ -0,0 +1,29 @@
+# Blackfin Platform Support
+snd-bf5xx-ac97-objs := bf5xx-ac97-pcm.o
+snd-bf5xx-i2s-objs := bf5xx-i2s-pcm.o
+snd-bf5xx-tdm-objs := bf5xx-tdm-pcm.o
+snd-soc-bf5xx-sport-objs := bf5xx-sport.o
+snd-soc-bf5xx-ac97-objs := bf5xx-ac97.o
+snd-soc-bf5xx-i2s-objs := bf5xx-i2s.o
+snd-soc-bf5xx-tdm-objs := bf5xx-tdm.o
+
+obj-$(CONFIG_SND_BF5XX_AC97) += snd-bf5xx-ac97.o
+obj-$(CONFIG_SND_BF5XX_I2S) += snd-bf5xx-i2s.o
+obj-$(CONFIG_SND_BF5XX_TDM) += snd-bf5xx-tdm.o
+obj-$(CONFIG_SND_BF5XX_SOC_SPORT) += snd-soc-bf5xx-sport.o
+obj-$(CONFIG_SND_BF5XX_SOC_AC97) += snd-soc-bf5xx-ac97.o
+obj-$(CONFIG_SND_BF5XX_SOC_I2S) += snd-soc-bf5xx-i2s.o
+obj-$(CONFIG_SND_BF5XX_SOC_TDM) += snd-soc-bf5xx-tdm.o
+
+# Blackfin Machine Support
+snd-ad1836-objs := bf5xx-ad1836.o
+snd-ad1980-objs := bf5xx-ad1980.o
+snd-ssm2602-objs := bf5xx-ssm2602.o
+snd-ad73311-objs := bf5xx-ad73311.o
+snd-ad1938-objs := bf5xx-ad1938.o
+
+obj-$(CONFIG_SND_BF5XX_SOC_AD1836) += snd-ad1836.o
+obj-$(CONFIG_SND_BF5XX_SOC_AD1980) += snd-ad1980.o
+obj-$(CONFIG_SND_BF5XX_SOC_SSM2602) += snd-ssm2602.o
+obj-$(CONFIG_SND_BF5XX_SOC_AD73311) += snd-ad73311.o
+obj-$(CONFIG_SND_BF5XX_SOC_AD1938) += snd-ad1938.o

kernel/sound/soc/blackfin/bf5xx-ac97-pcm.c

@@ -0,0 +1,468 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ac97-pcm.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Tue June 06 2008
+ * Description:  DMA Driver for AC97 sound chip
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <asm/dma.h>
+
+#include "bf5xx-ac97-pcm.h"
+#include "bf5xx-ac97.h"
+#include "bf5xx-sport.h"
+
+static unsigned int ac97_chan_mask[] = {
+	SP_FL, /* Mono */
+	SP_STEREO, /* Stereo */
+	SP_2DOT1, /* 2.1*/
+	SP_QUAD,/*Quadraquic*/
+	SP_FL | SP_FR | SP_FC | SP_SL | SP_SR,/*5 channels */
+	SP_5DOT1, /* 5.1 */
+};
+
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+static void bf5xx_mmap_copy(struct snd_pcm_substream *substream,
+	 snd_pcm_uframes_t count)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	unsigned int chan_mask = ac97_chan_mask[runtime->channels - 1];
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		bf5xx_pcm_to_ac97((struct ac97_frame *)sport->tx_dma_buf +
+		sport->tx_pos, (__u16 *)runtime->dma_area + sport->tx_pos *
+		runtime->channels, count, chan_mask);
+		sport->tx_pos += runtime->period_size;
+		if (sport->tx_pos >= runtime->buffer_size)
+			sport->tx_pos %= runtime->buffer_size;
+		sport->tx_delay_pos = sport->tx_pos;
+	} else {
+		bf5xx_ac97_to_pcm((struct ac97_frame *)sport->rx_dma_buf +
+		sport->rx_pos, (__u16 *)runtime->dma_area + sport->rx_pos *
+		runtime->channels, count);
+		sport->rx_pos += runtime->period_size;
+		if (sport->rx_pos >= runtime->buffer_size)
+			sport->rx_pos %= runtime->buffer_size;
+	}
+}
+#endif
+
+static void bf5xx_dma_irq(void *data)
+{
+	struct snd_pcm_substream *pcm = data;
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	struct snd_pcm_runtime *runtime = pcm->runtime;
+	struct sport_device *sport = runtime->private_data;
+	bf5xx_mmap_copy(pcm, runtime->period_size);
+	if (pcm->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (sport->once == 0) {
+			snd_pcm_period_elapsed(pcm);
+			bf5xx_mmap_copy(pcm, runtime->period_size);
+			sport->once = 1;
+		}
+	}
+#endif
+	snd_pcm_period_elapsed(pcm);
+}
+
+/* The memory size for pure pcm data is 128*1024 = 0x20000 bytes.
+ * The total rx/tx buffer is for ac97 frame to hold all pcm data
+ * is  0x20000 * sizeof(struct ac97_frame) / 4.
+ */
+static const struct snd_pcm_hardware bf5xx_pcm_hardware = {
+	.info			= SNDRV_PCM_INFO_INTERLEAVED |
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+				   SNDRV_PCM_INFO_MMAP |
+				   SNDRV_PCM_INFO_MMAP_VALID |
+#endif
+				   SNDRV_PCM_INFO_BLOCK_TRANSFER,
+
+	.formats		= SNDRV_PCM_FMTBIT_S16_LE,
+	.period_bytes_min	= 32,
+	.period_bytes_max	= 0x10000,
+	.periods_min		= 1,
+	.periods_max		= PAGE_SIZE/32,
+	.buffer_bytes_max	= 0x20000, /* 128 kbytes */
+	.fifo_size		= 16,
+};
+
+static int bf5xx_pcm_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max
+			* sizeof(struct ac97_frame) / 4;
+
+	snd_pcm_lib_malloc_pages(substream, size);
+
+	return 0;
+}
+
+static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		sport->once = 0;
+		if (runtime->dma_area)
+			memset(runtime->dma_area, 0, runtime->buffer_size);
+		memset(sport->tx_dma_buf, 0, runtime->buffer_size *
+			sizeof(struct ac97_frame));
+	} else
+		memset(sport->rx_dma_buf, 0, runtime->buffer_size *
+			sizeof(struct ac97_frame));
+#endif
+	snd_pcm_lib_free_pages(substream);
+	return 0;
+}
+
+static int bf5xx_pcm_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+
+	/* An intermediate buffer is introduced for implementing mmap for
+	 * SPORT working in TMD mode(include AC97).
+	 */
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		sport_set_tx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_tx_dma(sport, sport->tx_dma_buf, runtime->periods,
+			runtime->period_size * sizeof(struct ac97_frame));
+	} else {
+		sport_set_rx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_rx_dma(sport, sport->rx_dma_buf, runtime->periods,
+			runtime->period_size * sizeof(struct ac97_frame));
+	}
+#else
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		sport_set_tx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_tx_dma(sport, runtime->dma_area, runtime->periods,
+			runtime->period_size * sizeof(struct ac97_frame));
+	} else {
+		sport_set_rx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_rx_dma(sport, runtime->dma_area, runtime->periods,
+			runtime->period_size * sizeof(struct ac97_frame));
+	}
+#endif
+	return 0;
+}
+
+static int bf5xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	int ret = 0;
+
+	pr_debug("%s enter\n", __func__);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+			bf5xx_mmap_copy(substream, runtime->period_size);
+			sport->tx_delay_pos = 0;
+#endif
+			sport_tx_start(sport);
+		} else
+			sport_rx_start(sport);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+			sport->tx_pos = 0;
+#endif
+			sport_tx_stop(sport);
+		} else {
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+			sport->rx_pos = 0;
+#endif
+			sport_rx_stop(sport);
+		}
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	unsigned int curr;
+
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		curr = sport->tx_delay_pos;
+	else
+		curr = sport->rx_pos;
+#else
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		curr = sport_curr_offset_tx(sport) / sizeof(struct ac97_frame);
+	else
+		curr = sport_curr_offset_rx(sport) / sizeof(struct ac97_frame);
+
+#endif
+	return curr;
+}
+
+static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int ret;
+
+	pr_debug("%s enter\n", __func__);
+	snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware);
+
+	ret = snd_pcm_hw_constraint_integer(runtime,
+					    SNDRV_PCM_HW_PARAM_PERIODS);
+	if (ret < 0)
+		goto out;
+
+	if (sport_handle != NULL)
+		runtime->private_data = sport_handle;
+	else {
+		pr_err("sport_handle is NULL\n");
+		return -1;
+	}
+	return 0;
+
+ out:
+	return ret;
+}
+
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+static int bf5xx_pcm_mmap(struct snd_pcm_substream *substream,
+	struct vm_area_struct *vma)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	size_t size = vma->vm_end - vma->vm_start;
+	vma->vm_start = (unsigned long)runtime->dma_area;
+	vma->vm_end = vma->vm_start + size;
+	vma->vm_flags |=  VM_SHARED;
+	return 0 ;
+}
+#else
+static	int bf5xx_pcm_copy(struct snd_pcm_substream *substream, int channel,
+		    snd_pcm_uframes_t pos,
+		    void __user *buf, snd_pcm_uframes_t count)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int chan_mask = ac97_chan_mask[runtime->channels - 1];
+	pr_debug("%s copy pos:0x%lx count:0x%lx\n",
+			substream->stream ? "Capture" : "Playback", pos, count);
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		bf5xx_pcm_to_ac97((struct ac97_frame *)runtime->dma_area + pos,
+			(__u16 *)buf, count, chan_mask);
+	else
+		bf5xx_ac97_to_pcm((struct ac97_frame *)runtime->dma_area + pos,
+			(__u16 *)buf, count);
+	return 0;
+}
+#endif
+
+static struct snd_pcm_ops bf5xx_pcm_ac97_ops = {
+	.open		= bf5xx_pcm_open,
+	.ioctl		= snd_pcm_lib_ioctl,
+	.hw_params	= bf5xx_pcm_hw_params,
+	.hw_free	= bf5xx_pcm_hw_free,
+	.prepare	= bf5xx_pcm_prepare,
+	.trigger	= bf5xx_pcm_trigger,
+	.pointer	= bf5xx_pcm_pointer,
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	.mmap		= bf5xx_pcm_mmap,
+#else
+	.copy		= bf5xx_pcm_copy,
+#endif
+};
+
+static int bf5xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max
+			* sizeof(struct ac97_frame) / 4;
+
+	buf->dev.type = SNDRV_DMA_TYPE_DEV;
+	buf->dev.dev = pcm->card->dev;
+	buf->private_data = NULL;
+	buf->area = dma_alloc_coherent(pcm->card->dev, size,
+			&buf->addr, GFP_KERNEL);
+	if (!buf->area) {
+		pr_err("Failed to allocate dma memory\n");
+		pr_err("Please increase uncached DMA memory region\n");
+		return -ENOMEM;
+	}
+	buf->bytes = size;
+
+	pr_debug("%s, area:%p, size:0x%08lx\n", __func__,
+			buf->area, buf->bytes);
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		sport_handle->tx_buf = buf->area;
+	else
+		sport_handle->rx_buf = buf->area;
+
+/*
+ * Need to allocate local buffer when enable
+ * MMAP for SPORT working in TMD mode (include AC97).
+ */
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (!sport_handle->tx_dma_buf) {
+			sport_handle->tx_dma_buf = dma_alloc_coherent(NULL, \
+				size, &sport_handle->tx_dma_phy, GFP_KERNEL);
+			if (!sport_handle->tx_dma_buf) {
+				pr_err("Failed to allocate memory for tx dma \
+					buf - Please increase uncached DMA \
+					memory region\n");
+				return -ENOMEM;
+			} else
+				memset(sport_handle->tx_dma_buf, 0, size);
+		} else
+			memset(sport_handle->tx_dma_buf, 0, size);
+	} else {
+		if (!sport_handle->rx_dma_buf) {
+			sport_handle->rx_dma_buf = dma_alloc_coherent(NULL, \
+				size, &sport_handle->rx_dma_phy, GFP_KERNEL);
+			if (!sport_handle->rx_dma_buf) {
+				pr_err("Failed to allocate memory for rx dma \
+					buf - Please increase uncached DMA \
+					memory region\n");
+				return -ENOMEM;
+			} else
+				memset(sport_handle->rx_dma_buf, 0, size);
+		} else
+			memset(sport_handle->rx_dma_buf, 0, size);
+	}
+#endif
+	return 0;
+}
+
+static void bf5xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
+{
+	struct snd_pcm_substream *substream;
+	struct snd_dma_buffer *buf;
+	int stream;
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max *
+		sizeof(struct ac97_frame) / 4;
+#endif
+	for (stream = 0; stream < 2; stream++) {
+		substream = pcm->streams[stream].substream;
+		if (!substream)
+			continue;
+
+		buf = &substream->dma_buffer;
+		if (!buf->area)
+			continue;
+		dma_free_coherent(NULL, buf->bytes, buf->area, 0);
+		buf->area = NULL;
+#if defined(CONFIG_SND_BF5XX_MMAP_SUPPORT)
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		if (sport_handle->tx_dma_buf)
+			dma_free_coherent(NULL, size, \
+				sport_handle->tx_dma_buf, 0);
+		sport_handle->tx_dma_buf = NULL;
+	} else {
+
+		if (sport_handle->rx_dma_buf)
+			dma_free_coherent(NULL, size, \
+				sport_handle->rx_dma_buf, 0);
+		sport_handle->rx_dma_buf = NULL;
+	}
+#endif
+	}
+	if (sport_handle)
+		sport_done(sport_handle);
+}
+
+static u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32);
+
+int bf5xx_pcm_ac97_new(struct snd_card *card, struct snd_soc_dai *dai,
+	struct snd_pcm *pcm)
+{
+	int ret = 0;
+
+	pr_debug("%s enter\n", __func__);
+	if (!card->dev->dma_mask)
+		card->dev->dma_mask = &bf5xx_pcm_dmamask;
+	if (!card->dev->coherent_dma_mask)
+		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+
+	if (dai->playback.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_PLAYBACK);
+		if (ret)
+			goto out;
+	}
+
+	if (dai->capture.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_CAPTURE);
+		if (ret)
+			goto out;
+	}
+ out:
+	return ret;
+}
+
+struct snd_soc_platform bf5xx_ac97_soc_platform = {
+	.name		= "bf5xx-audio",
+	.pcm_ops 	= &bf5xx_pcm_ac97_ops,
+	.pcm_new	= bf5xx_pcm_ac97_new,
+	.pcm_free	= bf5xx_pcm_free_dma_buffers,
+};
+EXPORT_SYMBOL_GPL(bf5xx_ac97_soc_platform);
+
+static int __init bfin_ac97_init(void)
+{
+	return snd_soc_register_platform(&bf5xx_ac97_soc_platform);
+}
+module_init(bfin_ac97_init);
+
+static void __exit bfin_ac97_exit(void)
+{
+	snd_soc_unregister_platform(&bf5xx_ac97_soc_platform);
+}
+module_exit(bfin_ac97_exit);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ADI Blackfin AC97 PCM DMA module");
+MODULE_LICENSE("GPL");

kernel/sound/soc/blackfin/bf5xx-ac97-pcm.h

@@ -0,0 +1,29 @@
+/*
+ * linux/sound/arm/bf5xx-ac97-pcm.h -- ALSA PCM interface for the Blackfin
+ *
+ * Copyright 2007 Analog Device Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_AC97_PCM_H
+#define _BF5XX_AC97_PCM_H
+
+struct bf5xx_pcm_dma_params {
+	char *name;			/* stream identifier */
+};
+
+struct bf5xx_gpio {
+	u32 sys;
+	u32 rx;
+	u32 tx;
+	u32 clk;
+	u32 frm;
+};
+
+/* platform data */
+extern struct snd_soc_platform bf5xx_ac97_soc_platform;
+
+#endif

kernel/sound/soc/blackfin/bf5xx-ac97.c

@@ -0,0 +1,435 @@
+/*
+ * bf5xx-ac97.c -- AC97 support for the ADI blackfin chip.
+ *
+ * Author:	Roy Huang
+ * Created:	11th. June 2007
+ * Copyright:	Analog Device Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/delay.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <asm/irq.h>
+#include <asm/portmux.h>
+#include <linux/mutex.h>
+#include <linux/gpio.h>
+
+#include "bf5xx-sport.h"
+#include "bf5xx-ac97.h"
+
+/* Anomaly notes:
+ *  05000250 -	AD1980 is running in TDM mode and RFS/TFS are generated by SPORT
+ *		contrtoller. But, RFSDIV and TFSDIV are always set to 16*16-1,
+ *		while the max AC97 data size is 13*16. The DIV is always larger
+ *		than data size. AD73311 and ad2602 are not running in TDM mode.
+ *		AD1836 and AD73322 depend on external RFS/TFS only. So, this
+ *		anomaly does not affect blackfin sound drivers.
+*/
+
+static int *cmd_count;
+static int sport_num = CONFIG_SND_BF5XX_SPORT_NUM;
+
+#define SPORT_REQ(x) \
+	[x] = {P_SPORT##x##_TFS, P_SPORT##x##_DTPRI, P_SPORT##x##_TSCLK, \
+	       P_SPORT##x##_RFS, P_SPORT##x##_DRPRI, P_SPORT##x##_RSCLK, 0}
+static u16 sport_req[][7] = {
+#ifdef SPORT0_TCR1
+	SPORT_REQ(0),
+#endif
+#ifdef SPORT1_TCR1
+	SPORT_REQ(1),
+#endif
+#ifdef SPORT2_TCR1
+	SPORT_REQ(2),
+#endif
+#ifdef SPORT3_TCR1
+	SPORT_REQ(3),
+#endif
+};
+
+#define SPORT_PARAMS(x) \
+	[x] = { \
+		.dma_rx_chan = CH_SPORT##x##_RX, \
+		.dma_tx_chan = CH_SPORT##x##_TX, \
+		.err_irq     = IRQ_SPORT##x##_ERROR, \
+		.regs        = (struct sport_register *)SPORT##x##_TCR1, \
+	}
+static struct sport_param sport_params[4] = {
+#ifdef SPORT0_TCR1
+	SPORT_PARAMS(0),
+#endif
+#ifdef SPORT1_TCR1
+	SPORT_PARAMS(1),
+#endif
+#ifdef SPORT2_TCR1
+	SPORT_PARAMS(2),
+#endif
+#ifdef SPORT3_TCR1
+	SPORT_PARAMS(3),
+#endif
+};
+
+void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src,
+		size_t count, unsigned int chan_mask)
+{
+	while (count--) {
+		dst->ac97_tag = TAG_VALID;
+		if (chan_mask & SP_FL) {
+			dst->ac97_pcm_r = *src++;
+			dst->ac97_tag |= TAG_PCM_RIGHT;
+		}
+		if (chan_mask & SP_FR) {
+			dst->ac97_pcm_l = *src++;
+			dst->ac97_tag |= TAG_PCM_LEFT;
+
+		}
+#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
+		if (chan_mask & SP_SR) {
+			dst->ac97_sl = *src++;
+			dst->ac97_tag |= TAG_PCM_SL;
+		}
+		if (chan_mask & SP_SL) {
+			dst->ac97_sr = *src++;
+			dst->ac97_tag |= TAG_PCM_SR;
+		}
+		if (chan_mask & SP_LFE) {
+			dst->ac97_lfe = *src++;
+			dst->ac97_tag |= TAG_PCM_LFE;
+		}
+		if (chan_mask & SP_FC) {
+			dst->ac97_center = *src++;
+			dst->ac97_tag |= TAG_PCM_CENTER;
+		}
+#endif
+		dst++;
+	}
+}
+EXPORT_SYMBOL(bf5xx_pcm_to_ac97);
+
+void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst,
+		size_t count)
+{
+	while (count--) {
+		*(dst++) = src->ac97_pcm_l;
+		*(dst++) = src->ac97_pcm_r;
+		src++;
+	}
+}
+EXPORT_SYMBOL(bf5xx_ac97_to_pcm);
+
+static unsigned int sport_tx_curr_frag(struct sport_device *sport)
+{
+	return sport->tx_curr_frag = sport_curr_offset_tx(sport) /
+			sport->tx_fragsize;
+}
+
+static void enqueue_cmd(struct snd_ac97 *ac97, __u16 addr, __u16 data)
+{
+	struct sport_device *sport = sport_handle;
+	int nextfrag = sport_tx_curr_frag(sport);
+	struct ac97_frame *nextwrite;
+
+	sport_incfrag(sport, &nextfrag, 1);
+
+	nextwrite = (struct ac97_frame *)(sport->tx_buf +
+			nextfrag * sport->tx_fragsize);
+	pr_debug("sport->tx_buf:%p, nextfrag:0x%x nextwrite:%p, cmd_count:%d\n",
+		sport->tx_buf, nextfrag, nextwrite, cmd_count[nextfrag]);
+	nextwrite[cmd_count[nextfrag]].ac97_tag |= TAG_CMD;
+	nextwrite[cmd_count[nextfrag]].ac97_addr = addr;
+	nextwrite[cmd_count[nextfrag]].ac97_data = data;
+	++cmd_count[nextfrag];
+	pr_debug("ac97_sport: Inserting %02x/%04x into fragment %d\n",
+			addr >> 8, data, nextfrag);
+}
+
+static unsigned short bf5xx_ac97_read(struct snd_ac97 *ac97,
+	unsigned short reg)
+{
+	struct ac97_frame out_frame[2], in_frame[2];
+
+	pr_debug("%s enter 0x%x\n", __func__, reg);
+
+	/* When dma descriptor is enabled, the register should not be read */
+	if (sport_handle->tx_run || sport_handle->rx_run) {
+		pr_err("Could you send a mail to cliff.cai@analog.com "
+				"to report this?\n");
+		return -EFAULT;
+	}
+
+	memset(&out_frame, 0, 2 * sizeof(struct ac97_frame));
+	memset(&in_frame, 0, 2 * sizeof(struct ac97_frame));
+	out_frame[0].ac97_tag = TAG_VALID | TAG_CMD;
+	out_frame[0].ac97_addr = ((reg << 8) | 0x8000);
+	sport_send_and_recv(sport_handle, (unsigned char *)&out_frame,
+			(unsigned char *)&in_frame,
+			2 * sizeof(struct ac97_frame));
+	return in_frame[1].ac97_data;
+}
+
+void bf5xx_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
+	unsigned short val)
+{
+	pr_debug("%s enter 0x%x:0x%04x\n", __func__, reg, val);
+
+	if (sport_handle->tx_run) {
+		enqueue_cmd(ac97, (reg << 8), val); /* write */
+		enqueue_cmd(ac97, (reg << 8) | 0x8000, 0); /* read back */
+	} else {
+		struct ac97_frame frame;
+		memset(&frame, 0, sizeof(struct ac97_frame));
+		frame.ac97_tag = TAG_VALID | TAG_CMD;
+		frame.ac97_addr = (reg << 8);
+		frame.ac97_data = val;
+		sport_send_and_recv(sport_handle, (unsigned char *)&frame, \
+				NULL, sizeof(struct ac97_frame));
+	}
+}
+
+static void bf5xx_ac97_warm_reset(struct snd_ac97 *ac97)
+{
+#if defined(CONFIG_BF54x) || defined(CONFIG_BF561) || \
+ (defined(BF537_FAMILY) && (CONFIG_SND_BF5XX_SPORT_NUM == 1))
+
+#define CONCAT(a, b, c) a ## b ## c
+#define BFIN_SPORT_RFS(x) CONCAT(P_SPORT, x, _RFS)
+
+	u16 per = BFIN_SPORT_RFS(CONFIG_SND_BF5XX_SPORT_NUM);
+	u16 gpio = P_IDENT(BFIN_SPORT_RFS(CONFIG_SND_BF5XX_SPORT_NUM));
+
+	pr_debug("%s enter\n", __func__);
+
+	peripheral_free(per);
+	gpio_request(gpio, "bf5xx-ac97");
+	gpio_direction_output(gpio, 1);
+	udelay(2);
+	gpio_set_value(gpio, 0);
+	udelay(1);
+	gpio_free(gpio);
+	peripheral_request(per, "soc-audio");
+#else
+	pr_info("%s: Not implemented\n", __func__);
+#endif
+}
+
+static void bf5xx_ac97_cold_reset(struct snd_ac97 *ac97)
+{
+#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
+	pr_debug("%s enter\n", __func__);
+
+	/* It is specified for bf548-ezkit */
+	gpio_set_value(CONFIG_SND_BF5XX_RESET_GPIO_NUM, 0);
+	/* Keep reset pin low for 1 ms */
+	mdelay(1);
+	gpio_set_value(CONFIG_SND_BF5XX_RESET_GPIO_NUM, 1);
+	/* Wait for bit clock recover */
+	mdelay(1);
+#else
+	pr_info("%s: Not implemented\n", __func__);
+#endif
+}
+
+struct snd_ac97_bus_ops soc_ac97_ops = {
+	.read	= bf5xx_ac97_read,
+	.write	= bf5xx_ac97_write,
+	.warm_reset	= bf5xx_ac97_warm_reset,
+	.reset	= bf5xx_ac97_cold_reset,
+};
+EXPORT_SYMBOL_GPL(soc_ac97_ops);
+
+#ifdef CONFIG_PM
+static int bf5xx_ac97_suspend(struct snd_soc_dai *dai)
+{
+	struct sport_device *sport =
+		(struct sport_device *)dai->private_data;
+
+	pr_debug("%s : sport %d\n", __func__, dai->id);
+	if (!dai->active)
+		return 0;
+	if (dai->capture_active)
+		sport_rx_stop(sport);
+	if (dai->playback_active)
+		sport_tx_stop(sport);
+	return 0;
+}
+
+static int bf5xx_ac97_resume(struct snd_soc_dai *dai)
+{
+	int ret;
+	struct sport_device *sport =
+		(struct sport_device *)dai->private_data;
+
+	pr_debug("%s : sport %d\n", __func__, dai->id);
+	if (!dai->active)
+		return 0;
+
+#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
+	ret = sport_set_multichannel(sport, 16, 0x3FF, 1);
+#else
+	ret = sport_set_multichannel(sport, 16, 0x1F, 1);
+#endif
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		return -EBUSY;
+	}
+
+	ret = sport_config_rx(sport, IRFS, 0xF, 0, (16*16-1));
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		return -EBUSY;
+	}
+
+	ret = sport_config_tx(sport, ITFS, 0xF, 0, (16*16-1));
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+#else
+#define bf5xx_ac97_suspend	NULL
+#define bf5xx_ac97_resume	NULL
+#endif
+
+static int bf5xx_ac97_probe(struct platform_device *pdev,
+			    struct snd_soc_dai *dai)
+{
+	int ret = 0;
+	cmd_count = (int *)get_zeroed_page(GFP_KERNEL);
+	if (cmd_count == NULL)
+		return -ENOMEM;
+
+	if (peripheral_request_list(sport_req[sport_num], "soc-audio")) {
+		pr_err("Requesting Peripherals failed\n");
+		ret =  -EFAULT;
+		goto peripheral_err;
+	}
+
+#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
+	/* Request PB3 as reset pin */
+	if (gpio_request(CONFIG_SND_BF5XX_RESET_GPIO_NUM, "SND_AD198x RESET")) {
+		pr_err("Failed to request GPIO_%d for reset\n",
+				CONFIG_SND_BF5XX_RESET_GPIO_NUM);
+		ret =  -1;
+		goto gpio_err;
+	}
+	gpio_direction_output(CONFIG_SND_BF5XX_RESET_GPIO_NUM, 1);
+#endif
+	sport_handle = sport_init(&sport_params[sport_num], 2, \
+			sizeof(struct ac97_frame), NULL);
+	if (!sport_handle) {
+		ret = -ENODEV;
+		goto sport_err;
+	}
+	/*SPORT works in TDM mode to simulate AC97 transfers*/
+#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
+	ret = sport_set_multichannel(sport_handle, 16, 0x3FF, 1);
+#else
+	ret = sport_set_multichannel(sport_handle, 16, 0x1F, 1);
+#endif
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	ret = sport_config_rx(sport_handle, IRFS, 0xF, 0, (16*16-1));
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	ret = sport_config_tx(sport_handle, ITFS, 0xF, 0, (16*16-1));
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	return 0;
+
+sport_config_err:
+	kfree(sport_handle);
+sport_err:
+#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
+	gpio_free(CONFIG_SND_BF5XX_RESET_GPIO_NUM);
+gpio_err:
+#endif
+	peripheral_free_list(sport_req[sport_num]);
+peripheral_err:
+	free_page((unsigned long)cmd_count);
+	cmd_count = NULL;
+
+	return ret;
+}
+
+static void bf5xx_ac97_remove(struct platform_device *pdev,
+			      struct snd_soc_dai *dai)
+{
+	free_page((unsigned long)cmd_count);
+	cmd_count = NULL;
+	peripheral_free_list(sport_req[sport_num]);
+#ifdef CONFIG_SND_BF5XX_HAVE_COLD_RESET
+	gpio_free(CONFIG_SND_BF5XX_RESET_GPIO_NUM);
+#endif
+}
+
+struct snd_soc_dai bfin_ac97_dai = {
+	.name = "bf5xx-ac97",
+	.id = 0,
+	.ac97_control = 1,
+	.probe = bf5xx_ac97_probe,
+	.remove = bf5xx_ac97_remove,
+	.suspend = bf5xx_ac97_suspend,
+	.resume = bf5xx_ac97_resume,
+	.playback = {
+		.stream_name = "AC97 Playback",
+		.channels_min = 2,
+#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
+		.channels_max = 6,
+#else
+		.channels_max = 2,
+#endif
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
+	.capture = {
+		.stream_name = "AC97 Capture",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE, },
+};
+EXPORT_SYMBOL_GPL(bfin_ac97_dai);
+
+static int __init bfin_ac97_init(void)
+{
+	return snd_soc_register_dai(&bfin_ac97_dai);
+}
+module_init(bfin_ac97_init);
+
+static void __exit bfin_ac97_exit(void)
+{
+	snd_soc_unregister_dai(&bfin_ac97_dai);
+}
+module_exit(bfin_ac97_exit);
+
+MODULE_AUTHOR("Roy Huang");
+MODULE_DESCRIPTION("AC97 driver for ADI Blackfin");
+MODULE_LICENSE("GPL");

kernel/sound/soc/blackfin/bf5xx-ac97.h

@@ -0,0 +1,61 @@
+/*
+ * sound/soc/blackfin/bf5xx-ac97.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_AC97_H
+#define _BF5XX_AC97_H
+
+extern struct snd_ac97_bus_ops bf5xx_ac97_ops;
+extern struct snd_ac97 *ac97;
+/* Frame format in memory, only support stereo currently */
+struct ac97_frame {
+	u16 ac97_tag;		/* slot 0 */
+	u16 ac97_addr;		/* slot 1 */
+	u16 ac97_data;		/* slot 2 */
+	u16 ac97_pcm_l;		/*slot 3:front left*/
+	u16 ac97_pcm_r;		/*slot 4:front left*/
+#if defined(CONFIG_SND_BF5XX_MULTICHAN_SUPPORT)
+	u16 ac97_mdm_l1;
+	u16 ac97_center;	/*slot 6:center*/
+	u16 ac97_sl;		/*slot 7:surround left*/
+	u16 ac97_sr;		/*slot 8:surround right*/
+	u16 ac97_lfe;		/*slot 9:lfe*/
+#endif
+} __attribute__ ((packed));
+
+/* Speaker location */
+#define SP_FL		0x0001
+#define SP_FR		0x0010
+#define SP_FC		0x0002
+#define SP_LFE		0x0020
+#define SP_SL		0x0004
+#define SP_SR		0x0040
+
+#define SP_STEREO	(SP_FL | SP_FR)
+#define SP_2DOT1	(SP_FL | SP_FR | SP_LFE)
+#define SP_QUAD		(SP_FL | SP_FR | SP_SL | SP_SR)
+#define SP_5DOT1	(SP_FL | SP_FR | SP_FC | SP_LFE | SP_SL | SP_SR)
+
+#define TAG_VALID		0x8000
+#define TAG_CMD			0x6000
+#define TAG_PCM_LEFT		0x1000
+#define TAG_PCM_RIGHT		0x0800
+#define TAG_PCM_MDM_L1		0x0400
+#define TAG_PCM_CENTER		0x0200
+#define TAG_PCM_SL		0x0100
+#define TAG_PCM_SR		0x0080
+#define TAG_PCM_LFE		0x0040
+
+extern struct snd_soc_dai bfin_ac97_dai;
+
+void bf5xx_pcm_to_ac97(struct ac97_frame *dst, const __u16 *src, \
+		size_t count, unsigned int chan_mask);
+
+void bf5xx_ac97_to_pcm(const struct ac97_frame *src, __u16 *dst, \
+		size_t count);
+
+#endif

kernel/sound/soc/blackfin/bf5xx-ad1836.c

@@ -0,0 +1,128 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad1836.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Aug 4 2009
+ * Description:  Board driver for ad1836 sound chip
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad1836.h"
+#include "bf5xx-sport.h"
+
+#include "bf5xx-tdm-pcm.h"
+#include "bf5xx-tdm.h"
+
+static struct snd_soc_card bf5xx_ad1836;
+
+static int bf5xx_ad1836_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	cpu_dai->private_data = sport_handle;
+	return 0;
+}
+
+static int bf5xx_ad1836_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+	int ret = 0;
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
+		SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
+		SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct snd_soc_ops bf5xx_ad1836_ops = {
+	.startup = bf5xx_ad1836_startup,
+	.hw_params = bf5xx_ad1836_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad1836_dai = {
+	.name = "ad1836",
+	.stream_name = "AD1836",
+	.cpu_dai = &bf5xx_tdm_dai,
+	.codec_dai = &ad1836_dai,
+	.ops = &bf5xx_ad1836_ops,
+};
+
+static struct snd_soc_card bf5xx_ad1836 = {
+	.name = "bf5xx_ad1836",
+	.platform = &bf5xx_tdm_soc_platform,
+	.dai_link = &bf5xx_ad1836_dai,
+	.num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad1836_snd_devdata = {
+	.card = &bf5xx_ad1836,
+	.codec_dev = &soc_codec_dev_ad1836,
+};
+
+static struct platform_device *bfxx_ad1836_snd_device;
+
+static int __init bf5xx_ad1836_init(void)
+{
+	int ret;
+
+	bfxx_ad1836_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!bfxx_ad1836_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(bfxx_ad1836_snd_device, &bf5xx_ad1836_snd_devdata);
+	bf5xx_ad1836_snd_devdata.dev = &bfxx_ad1836_snd_device->dev;
+	ret = platform_device_add(bfxx_ad1836_snd_device);
+
+	if (ret)
+		platform_device_put(bfxx_ad1836_snd_device);
+
+	return ret;
+}
+
+static void __exit bf5xx_ad1836_exit(void)
+{
+	platform_device_unregister(bfxx_ad1836_snd_device);
+}
+
+module_init(bf5xx_ad1836_init);
+module_exit(bf5xx_ad1836_exit);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ALSA SoC AD1836 board driver");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-ad1938.c

@@ -0,0 +1,142 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad1938.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Thur June 4 2009
+ * Description:  Board driver for ad1938 sound chip
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad1938.h"
+#include "bf5xx-sport.h"
+
+#include "bf5xx-tdm-pcm.h"
+#include "bf5xx-tdm.h"
+
+static struct snd_soc_card bf5xx_ad1938;
+
+static int bf5xx_ad1938_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	cpu_dai->private_data = sport_handle;
+	return 0;
+}
+
+static int bf5xx_ad1938_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+	int ret = 0;
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
+		SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_DSP_A |
+		SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	/* set codec DAI slots, 8 channels, all channels are enabled */
+	ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xFF, 8);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct snd_soc_ops bf5xx_ad1938_ops = {
+	.startup = bf5xx_ad1938_startup,
+	.hw_params = bf5xx_ad1938_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad1938_dai = {
+	.name = "ad1938",
+	.stream_name = "AD1938",
+	.cpu_dai = &bf5xx_tdm_dai,
+	.codec_dai = &ad1938_dai,
+	.ops = &bf5xx_ad1938_ops,
+};
+
+static struct snd_soc_card bf5xx_ad1938 = {
+	.name = "bf5xx_ad1938",
+	.platform = &bf5xx_tdm_soc_platform,
+	.dai_link = &bf5xx_ad1938_dai,
+	.num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad1938_snd_devdata = {
+	.card = &bf5xx_ad1938,
+	.codec_dev = &soc_codec_dev_ad1938,
+};
+
+static struct platform_device *bfxx_ad1938_snd_device;
+
+static int __init bf5xx_ad1938_init(void)
+{
+	int ret;
+
+	bfxx_ad1938_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!bfxx_ad1938_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(bfxx_ad1938_snd_device, &bf5xx_ad1938_snd_devdata);
+	bf5xx_ad1938_snd_devdata.dev = &bfxx_ad1938_snd_device->dev;
+	ret = platform_device_add(bfxx_ad1938_snd_device);
+
+	if (ret)
+		platform_device_put(bfxx_ad1938_snd_device);
+
+	return ret;
+}
+
+static void __exit bf5xx_ad1938_exit(void)
+{
+	platform_device_unregister(bfxx_ad1938_snd_device);
+}
+
+module_init(bf5xx_ad1938_init);
+module_exit(bf5xx_ad1938_exit);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ALSA SoC AD1938 board driver");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-ad1980.c

@@ -0,0 +1,113 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad1980.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Tue June 06 2008
+ * Description:  Board driver for AD1980/1 audio codec
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <asm/dma.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <linux/gpio.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad1980.h"
+#include "bf5xx-sport.h"
+#include "bf5xx-ac97-pcm.h"
+#include "bf5xx-ac97.h"
+
+static struct snd_soc_card bf5xx_board;
+
+static int bf5xx_board_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	pr_debug("%s enter\n", __func__);
+	cpu_dai->private_data = sport_handle;
+	return 0;
+}
+
+static struct snd_soc_ops bf5xx_board_ops = {
+	.startup = bf5xx_board_startup,
+};
+
+static struct snd_soc_dai_link bf5xx_board_dai = {
+	.name = "AC97",
+	.stream_name = "AC97 HiFi",
+	.cpu_dai = &bfin_ac97_dai,
+	.codec_dai = &ad1980_dai,
+	.ops = &bf5xx_board_ops,
+};
+
+static struct snd_soc_card bf5xx_board = {
+	.name = "bf5xx-board",
+	.platform = &bf5xx_ac97_soc_platform,
+	.dai_link = &bf5xx_board_dai,
+	.num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_board_snd_devdata = {
+	.card = &bf5xx_board,
+	.codec_dev = &soc_codec_dev_ad1980,
+};
+
+static struct platform_device *bf5xx_board_snd_device;
+
+static int __init bf5xx_board_init(void)
+{
+	int ret;
+
+	bf5xx_board_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!bf5xx_board_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(bf5xx_board_snd_device, &bf5xx_board_snd_devdata);
+	bf5xx_board_snd_devdata.dev = &bf5xx_board_snd_device->dev;
+	ret = platform_device_add(bf5xx_board_snd_device);
+
+	if (ret)
+		platform_device_put(bf5xx_board_snd_device);
+
+	return ret;
+}
+
+static void __exit bf5xx_board_exit(void)
+{
+	platform_device_unregister(bf5xx_board_snd_device);
+}
+
+module_init(bf5xx_board_init);
+module_exit(bf5xx_board_exit);
+
+/* Module information */
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ALSA SoC AD1980/1 BF5xx board");
+MODULE_LICENSE("GPL");

kernel/sound/soc/blackfin/bf5xx-ad73311.c

@@ -0,0 +1,240 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad73311.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Thur Sep 25 2008
+ * Description:  Board driver for ad73311 sound chip
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad73311.h"
+#include "bf5xx-sport.h"
+#include "bf5xx-i2s-pcm.h"
+#include "bf5xx-i2s.h"
+
+#if CONFIG_SND_BF5XX_SPORT_NUM == 0
+#define bfin_write_SPORT_TCR1	bfin_write_SPORT0_TCR1
+#define bfin_read_SPORT_TCR1	bfin_read_SPORT0_TCR1
+#define bfin_write_SPORT_TCR2	bfin_write_SPORT0_TCR2
+#define bfin_write_SPORT_TX16	bfin_write_SPORT0_TX16
+#define bfin_read_SPORT_STAT	bfin_read_SPORT0_STAT
+#else
+#define bfin_write_SPORT_TCR1	bfin_write_SPORT1_TCR1
+#define bfin_read_SPORT_TCR1	bfin_read_SPORT1_TCR1
+#define bfin_write_SPORT_TCR2	bfin_write_SPORT1_TCR2
+#define bfin_write_SPORT_TX16	bfin_write_SPORT1_TX16
+#define bfin_read_SPORT_STAT	bfin_read_SPORT1_STAT
+#endif
+
+#define GPIO_SE CONFIG_SND_BFIN_AD73311_SE
+
+static struct snd_soc_card bf5xx_ad73311;
+
+static int snd_ad73311_startup(void)
+{
+	pr_debug("%s enter\n", __func__);
+
+	/* Pull up SE pin on AD73311L */
+	gpio_set_value(GPIO_SE, 1);
+	return 0;
+}
+
+static int snd_ad73311_configure(void)
+{
+	unsigned short ctrl_regs[6];
+	unsigned short status = 0;
+	int count = 0;
+
+	/* DMCLK = MCLK = 16.384 MHz
+	 * SCLK = DMCLK/8 = 2.048 MHz
+	 * Sample Rate = DMCLK/2048  = 8 KHz
+	 */
+	ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
+			REGB_SCDIV(0) | REGB_DIRATE(0);
+	ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
+			REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
+	ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
+			REGD_IGS(2);
+	ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
+	ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
+	ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;
+
+	local_irq_disable();
+	snd_ad73311_startup();
+	udelay(1);
+
+	bfin_write_SPORT_TCR1(TFSR);
+	bfin_write_SPORT_TCR2(0xF);
+	SSYNC();
+
+	/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
+	 * FIFO before enable SPORT to transfer the data
+	 */
+	for (count = 0; count < 6; count++)
+		bfin_write_SPORT_TX16(ctrl_regs[count]);
+	SSYNC();
+	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
+	SSYNC();
+
+	/* When TUVF is set, the data is already send out */
+	while (!(status & TUVF) && ++count < 10000) {
+		udelay(1);
+		status = bfin_read_SPORT_STAT();
+		SSYNC();
+	}
+	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
+	SSYNC();
+	local_irq_enable();
+
+	if (count >= 10000) {
+		printk(KERN_ERR "ad73311: failed to configure codec\n");
+		return -1;
+	}
+	return 0;
+}
+
+static int bf5xx_probe(struct platform_device *pdev)
+{
+	int err;
+	if (gpio_request(GPIO_SE, "AD73311_SE")) {
+		printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
+		return -EBUSY;
+	}
+
+	gpio_direction_output(GPIO_SE, 0);
+
+	err = snd_ad73311_configure();
+	if (err < 0)
+		return -EFAULT;
+
+	return 0;
+}
+
+static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	pr_debug("%s enter\n", __func__);
+	cpu_dai->private_data = sport_handle;
+	return 0;
+}
+
+static int bf5xx_ad73311_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+	int ret = 0;
+
+	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
+		params_format(params));
+
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
+		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+
+static struct snd_soc_ops bf5xx_ad73311_ops = {
+	.startup = bf5xx_ad73311_startup,
+	.hw_params = bf5xx_ad73311_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad73311_dai = {
+	.name = "ad73311",
+	.stream_name = "AD73311",
+	.cpu_dai = &bf5xx_i2s_dai,
+	.codec_dai = &ad73311_dai,
+	.ops = &bf5xx_ad73311_ops,
+};
+
+static struct snd_soc_card bf5xx_ad73311 = {
+	.name = "bf5xx_ad73311",
+	.platform = &bf5xx_i2s_soc_platform,
+	.probe = bf5xx_probe,
+	.dai_link = &bf5xx_ad73311_dai,
+	.num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
+	.card = &bf5xx_ad73311,
+	.codec_dev = &soc_codec_dev_ad73311,
+};
+
+static struct platform_device *bf5xx_ad73311_snd_device;
+
+static int __init bf5xx_ad73311_init(void)
+{
+	int ret;
+
+	pr_debug("%s enter\n", __func__);
+	bf5xx_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!bf5xx_ad73311_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(bf5xx_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
+	bf5xx_ad73311_snd_devdata.dev = &bf5xx_ad73311_snd_device->dev;
+	ret = platform_device_add(bf5xx_ad73311_snd_device);
+
+	if (ret)
+		platform_device_put(bf5xx_ad73311_snd_device);
+
+	return ret;
+}
+
+static void __exit bf5xx_ad73311_exit(void)
+{
+	pr_debug("%s enter\n", __func__);
+	platform_device_unregister(bf5xx_ad73311_snd_device);
+}
+
+module_init(bf5xx_ad73311_init);
+module_exit(bf5xx_ad73311_exit);
+
+/* Module information */
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-i2s-pcm.c

@@ -0,0 +1,300 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-i2s-pcm.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Tue June 06 2008
+ * Description:  DMA driver for i2s codec
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <asm/dma.h>
+
+#include "bf5xx-i2s-pcm.h"
+#include "bf5xx-i2s.h"
+#include "bf5xx-sport.h"
+
+static void bf5xx_dma_irq(void *data)
+{
+	struct snd_pcm_substream *pcm = data;
+	snd_pcm_period_elapsed(pcm);
+}
+
+static const struct snd_pcm_hardware bf5xx_pcm_hardware = {
+	.info			= SNDRV_PCM_INFO_INTERLEAVED |
+				   SNDRV_PCM_INFO_MMAP |
+				   SNDRV_PCM_INFO_MMAP_VALID |
+				   SNDRV_PCM_INFO_BLOCK_TRANSFER,
+	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
+				   SNDRV_PCM_FMTBIT_S24_LE |
+				   SNDRV_PCM_FMTBIT_S32_LE,
+	.period_bytes_min	= 32,
+	.period_bytes_max	= 0x10000,
+	.periods_min		= 1,
+	.periods_max		= PAGE_SIZE/32,
+	.buffer_bytes_max	= 0x20000, /* 128 kbytes */
+	.fifo_size		= 16,
+};
+
+static int bf5xx_pcm_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max;
+	snd_pcm_lib_malloc_pages(substream, size);
+
+	return 0;
+}
+
+static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+	snd_pcm_lib_free_pages(substream);
+
+	return 0;
+}
+
+static int bf5xx_pcm_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	int period_bytes = frames_to_bytes(runtime, runtime->period_size);
+
+	pr_debug("%s enter\n", __func__);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		sport_set_tx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_tx_dma(sport, runtime->dma_area,
+			runtime->periods, period_bytes);
+	} else {
+		sport_set_rx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_rx_dma(sport, runtime->dma_area,
+			runtime->periods, period_bytes);
+	}
+
+	return 0;
+}
+
+static int bf5xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	int ret = 0;
+
+	pr_debug("%s enter\n", __func__);
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			sport_tx_start(sport);
+		else
+			sport_rx_start(sport);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			sport_tx_stop(sport);
+		else
+			sport_rx_stop(sport);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	unsigned int diff;
+	snd_pcm_uframes_t frames;
+	pr_debug("%s enter\n", __func__);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		diff = sport_curr_offset_tx(sport);
+		frames = bytes_to_frames(substream->runtime, diff);
+	} else {
+		diff = sport_curr_offset_rx(sport);
+		frames = bytes_to_frames(substream->runtime, diff);
+	}
+	return frames;
+}
+
+static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int ret;
+
+	pr_debug("%s enter\n", __func__);
+	snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware);
+
+	ret = snd_pcm_hw_constraint_integer(runtime, \
+			SNDRV_PCM_HW_PARAM_PERIODS);
+	if (ret < 0)
+		goto out;
+
+	if (sport_handle != NULL)
+		runtime->private_data = sport_handle;
+	else {
+		pr_err("sport_handle is NULL\n");
+		return -1;
+	}
+	return 0;
+
+ out:
+	return ret;
+}
+
+static int bf5xx_pcm_mmap(struct snd_pcm_substream *substream,
+	struct vm_area_struct *vma)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	size_t size = vma->vm_end - vma->vm_start;
+	vma->vm_start = (unsigned long)runtime->dma_area;
+	vma->vm_end = vma->vm_start + size;
+	vma->vm_flags |=  VM_SHARED;
+
+	return 0 ;
+}
+
+static struct snd_pcm_ops bf5xx_pcm_i2s_ops = {
+	.open		= bf5xx_pcm_open,
+	.ioctl		= snd_pcm_lib_ioctl,
+	.hw_params	= bf5xx_pcm_hw_params,
+	.hw_free	= bf5xx_pcm_hw_free,
+	.prepare	= bf5xx_pcm_prepare,
+	.trigger	= bf5xx_pcm_trigger,
+	.pointer	= bf5xx_pcm_pointer,
+	.mmap		= bf5xx_pcm_mmap,
+};
+
+static int bf5xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max;
+
+	buf->dev.type = SNDRV_DMA_TYPE_DEV;
+	buf->dev.dev = pcm->card->dev;
+	buf->private_data = NULL;
+	buf->area = dma_alloc_coherent(pcm->card->dev, size,
+			&buf->addr, GFP_KERNEL);
+	if (!buf->area) {
+		pr_err("Failed to allocate dma memory \
+			Please increase uncached DMA memory region\n");
+		return -ENOMEM;
+	}
+	buf->bytes = size;
+
+	pr_debug("%s, area:%p, size:0x%08lx\n", __func__,
+		buf->area, buf->bytes);
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		sport_handle->tx_buf = buf->area;
+	else
+		sport_handle->rx_buf = buf->area;
+
+	return 0;
+}
+
+static void bf5xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
+{
+	struct snd_pcm_substream *substream;
+	struct snd_dma_buffer *buf;
+	int stream;
+
+	for (stream = 0; stream < 2; stream++) {
+		substream = pcm->streams[stream].substream;
+		if (!substream)
+			continue;
+
+		buf = &substream->dma_buffer;
+		if (!buf->area)
+			continue;
+		dma_free_coherent(NULL, buf->bytes, buf->area, 0);
+		buf->area = NULL;
+	}
+	if (sport_handle)
+		sport_done(sport_handle);
+}
+
+static u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32);
+
+int bf5xx_pcm_i2s_new(struct snd_card *card, struct snd_soc_dai *dai,
+	struct snd_pcm *pcm)
+{
+	int ret = 0;
+
+	pr_debug("%s enter\n", __func__);
+	if (!card->dev->dma_mask)
+		card->dev->dma_mask = &bf5xx_pcm_dmamask;
+	if (!card->dev->coherent_dma_mask)
+		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+
+	if (dai->playback.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_PLAYBACK);
+		if (ret)
+			goto out;
+	}
+
+	if (dai->capture.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_CAPTURE);
+		if (ret)
+			goto out;
+	}
+ out:
+	return ret;
+}
+
+struct snd_soc_platform bf5xx_i2s_soc_platform = {
+	.name		= "bf5xx-audio",
+	.pcm_ops 	= &bf5xx_pcm_i2s_ops,
+	.pcm_new	= bf5xx_pcm_i2s_new,
+	.pcm_free	= bf5xx_pcm_free_dma_buffers,
+};
+EXPORT_SYMBOL_GPL(bf5xx_i2s_soc_platform);
+
+static int __init bfin_i2s_init(void)
+{
+	return snd_soc_register_platform(&bf5xx_i2s_soc_platform);
+}
+module_init(bfin_i2s_init);
+
+static void __exit bfin_i2s_exit(void)
+{
+	snd_soc_unregister_platform(&bf5xx_i2s_soc_platform);
+}
+module_exit(bfin_i2s_exit);
+
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ADI Blackfin I2S PCM DMA module");
+MODULE_LICENSE("GPL");

kernel/sound/soc/blackfin/bf5xx-i2s-pcm.h

@@ -0,0 +1,29 @@
+/*
+ * linux/sound/arm/bf5xx-i2s-pcm.h -- ALSA PCM interface for the Blackfin
+ *
+ * Copyright 2007 Analog Device Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_I2S_PCM_H
+#define _BF5XX_I2S_PCM_H
+
+struct bf5xx_pcm_dma_params {
+	char *name;			/* stream identifier */
+};
+
+struct bf5xx_gpio {
+	u32 sys;
+	u32 rx;
+	u32 tx;
+	u32 clk;
+	u32 frm;
+};
+
+/* platform data */
+extern struct snd_soc_platform bf5xx_i2s_soc_platform;
+
+#endif

kernel/sound/soc/blackfin/bf5xx-i2s.c

@@ -0,0 +1,330 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-i2s.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Tue June 06 2008
+ * Description:  Blackfin I2S CPU DAI driver
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <asm/irq.h>
+#include <asm/portmux.h>
+#include <linux/mutex.h>
+#include <linux/gpio.h>
+
+#include "bf5xx-sport.h"
+#include "bf5xx-i2s.h"
+
+struct bf5xx_i2s_port {
+	u16 tcr1;
+	u16 rcr1;
+	u16 tcr2;
+	u16 rcr2;
+	int counter;
+	int configured;
+};
+
+static struct bf5xx_i2s_port bf5xx_i2s;
+static int sport_num = CONFIG_SND_BF5XX_SPORT_NUM;
+
+static struct sport_param sport_params[2] = {
+	{
+		.dma_rx_chan	= CH_SPORT0_RX,
+		.dma_tx_chan	= CH_SPORT0_TX,
+		.err_irq	= IRQ_SPORT0_ERROR,
+		.regs		= (struct sport_register *)SPORT0_TCR1,
+	},
+	{
+		.dma_rx_chan	= CH_SPORT1_RX,
+		.dma_tx_chan	= CH_SPORT1_TX,
+		.err_irq	= IRQ_SPORT1_ERROR,
+		.regs		= (struct sport_register *)SPORT1_TCR1,
+	}
+};
+
+/*
+ * Setting the TFS pin selector for SPORT 0 based on whether the selected
+ * port id F or G. If the port is F then no conflict should exist for the
+ * TFS. When Port G is selected and EMAC then there is a conflict between
+ * the PHY interrupt line and TFS.  Current settings prevent the conflict
+ * by ignoring the TFS pin when Port G is selected. This allows both
+ * codecs and EMAC using Port G concurrently.
+ */
+#ifdef CONFIG_BF527_SPORT0_PORTG
+#define LOCAL_SPORT0_TFS (0)
+#else
+#define LOCAL_SPORT0_TFS (P_SPORT0_TFS)
+#endif
+
+static u16 sport_req[][7] = { {P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
+		P_SPORT0_DRPRI, P_SPORT0_RSCLK, LOCAL_SPORT0_TFS, 0},
+		{P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS, P_SPORT1_DRPRI,
+		P_SPORT1_RSCLK, P_SPORT1_TFS, 0} };
+
+static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
+		unsigned int fmt)
+{
+	int ret = 0;
+
+	/* interface format:support I2S,slave mode */
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		bf5xx_i2s.tcr1 |= TFSR | TCKFE;
+		bf5xx_i2s.rcr1 |= RFSR | RCKFE;
+		bf5xx_i2s.tcr2 |= TSFSE;
+		bf5xx_i2s.rcr2 |= RSFSE;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		bf5xx_i2s.tcr1 |= TFSR;
+		bf5xx_i2s.rcr1 |= RFSR;
+		break;
+	case SND_SOC_DAIFMT_LEFT_J:
+		ret = -EINVAL;
+		break;
+	default:
+		printk(KERN_ERR "%s: Unknown DAI format type\n", __func__);
+		ret = -EINVAL;
+		break;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+	case SND_SOC_DAIFMT_CBM_CFS:
+	case SND_SOC_DAIFMT_CBS_CFM:
+		ret = -EINVAL;
+		break;
+	default:
+		printk(KERN_ERR "%s: Unknown DAI master type\n", __func__);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int bf5xx_i2s_startup(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai)
+{
+	pr_debug("%s enter\n", __func__);
+
+	/*this counter is used for counting how many pcm streams are opened*/
+	bf5xx_i2s.counter++;
+	return 0;
+}
+
+static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params,
+				struct snd_soc_dai *dai)
+{
+	int ret = 0;
+
+	bf5xx_i2s.tcr2 &= ~0x1f;
+	bf5xx_i2s.rcr2 &= ~0x1f;
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S16_LE:
+		bf5xx_i2s.tcr2 |= 15;
+		bf5xx_i2s.rcr2 |= 15;
+		sport_handle->wdsize = 2;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		bf5xx_i2s.tcr2 |= 23;
+		bf5xx_i2s.rcr2 |= 23;
+		sport_handle->wdsize = 3;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		bf5xx_i2s.tcr2 |= 31;
+		bf5xx_i2s.rcr2 |= 31;
+		sport_handle->wdsize = 4;
+		break;
+	}
+
+	if (!bf5xx_i2s.configured) {
+		/*
+		 * TX and RX are not independent,they are enabled at the
+		 * same time, even if only one side is running. So, we
+		 * need to configure both of them at the time when the first
+		 * stream is opened.
+		 *
+		 * CPU DAI:slave mode.
+		 */
+		bf5xx_i2s.configured = 1;
+		ret = sport_config_rx(sport_handle, bf5xx_i2s.rcr1,
+				      bf5xx_i2s.rcr2, 0, 0);
+		if (ret) {
+			pr_err("SPORT is busy!\n");
+			return -EBUSY;
+		}
+
+		ret = sport_config_tx(sport_handle, bf5xx_i2s.tcr1,
+				      bf5xx_i2s.tcr2, 0, 0);
+		if (ret) {
+			pr_err("SPORT is busy!\n");
+			return -EBUSY;
+		}
+	}
+
+	return 0;
+}
+
+static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream,
+			       struct snd_soc_dai *dai)
+{
+	pr_debug("%s enter\n", __func__);
+	bf5xx_i2s.counter--;
+	/* No active stream, SPORT is allowed to be configured again. */
+	if (!bf5xx_i2s.counter)
+		bf5xx_i2s.configured = 0;
+}
+
+static int bf5xx_i2s_probe(struct platform_device *pdev,
+			   struct snd_soc_dai *dai)
+{
+	pr_debug("%s enter\n", __func__);
+	if (peripheral_request_list(&sport_req[sport_num][0], "soc-audio")) {
+		pr_err("Requesting Peripherals failed\n");
+		return -EFAULT;
+	}
+
+	/* request DMA for SPORT */
+	sport_handle = sport_init(&sport_params[sport_num], 4, \
+			2 * sizeof(u32), NULL);
+	if (!sport_handle) {
+		peripheral_free_list(&sport_req[sport_num][0]);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static void bf5xx_i2s_remove(struct platform_device *pdev,
+			struct snd_soc_dai *dai)
+{
+	pr_debug("%s enter\n", __func__);
+	peripheral_free_list(&sport_req[sport_num][0]);
+}
+
+#ifdef CONFIG_PM
+static int bf5xx_i2s_suspend(struct snd_soc_dai *dai)
+{
+
+	pr_debug("%s : sport %d\n", __func__, dai->id);
+
+	if (dai->capture.active)
+		sport_rx_stop(sport_handle);
+	if (dai->playback.active)
+		sport_tx_stop(sport_handle);
+	return 0;
+}
+
+static int bf5xx_i2s_resume(struct snd_soc_dai *dai)
+{
+	int ret;
+
+	pr_debug("%s : sport %d\n", __func__, dai->id);
+
+	ret = sport_config_rx(sport_handle, bf5xx_i2s.rcr1,
+				      bf5xx_i2s.rcr2, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		return -EBUSY;
+	}
+
+	ret = sport_config_tx(sport_handle, bf5xx_i2s.tcr1,
+				      bf5xx_i2s.tcr2, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+#else
+#define bf5xx_i2s_suspend	NULL
+#define bf5xx_i2s_resume	NULL
+#endif
+
+#define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
+		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
+		SNDRV_PCM_RATE_96000)
+
+#define BF5XX_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
+	SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_ops bf5xx_i2s_dai_ops = {
+	.startup	= bf5xx_i2s_startup,
+	.shutdown	= bf5xx_i2s_shutdown,
+	.hw_params	= bf5xx_i2s_hw_params,
+	.set_fmt	= bf5xx_i2s_set_dai_fmt,
+};
+
+struct snd_soc_dai bf5xx_i2s_dai = {
+	.name = "bf5xx-i2s",
+	.id = 0,
+	.probe = bf5xx_i2s_probe,
+	.remove = bf5xx_i2s_remove,
+	.suspend = bf5xx_i2s_suspend,
+	.resume = bf5xx_i2s_resume,
+	.playback = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = BF5XX_I2S_RATES,
+		.formats = BF5XX_I2S_FORMATS,},
+	.capture = {
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = BF5XX_I2S_RATES,
+		.formats = BF5XX_I2S_FORMATS,},
+	.ops = &bf5xx_i2s_dai_ops,
+};
+EXPORT_SYMBOL_GPL(bf5xx_i2s_dai);
+
+static int __init bfin_i2s_init(void)
+{
+	return snd_soc_register_dai(&bf5xx_i2s_dai);
+}
+module_init(bfin_i2s_init);
+
+static void __exit bfin_i2s_exit(void)
+{
+	snd_soc_unregister_dai(&bf5xx_i2s_dai);
+}
+module_exit(bfin_i2s_exit);
+
+/* Module information */
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("I2S driver for ADI Blackfin");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-i2s.h

@@ -0,0 +1,14 @@
+/*
+ * sound/soc/blackfin/bf5xx-i2s.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_I2S_H
+#define _BF5XX_I2S_H
+
+extern struct snd_soc_dai bf5xx_i2s_dai;
+
+#endif

kernel/sound/soc/blackfin/bf5xx-sport.h

@@ -0,0 +1,194 @@
+/*
+ * File:         bf5xx_ac97_sport.h
+ * Based on:
+ * Author:       Roy Huang <roy.huang@analog.com>
+ *
+ * Created:
+ * Description:
+ *
+ *               Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#ifndef __BF5XX_SPORT_H__
+#define __BF5XX_SPORT_H__
+
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <asm/dma.h>
+
+struct sport_register {
+	u16 tcr1;	u16 reserved0;
+	u16 tcr2;	u16 reserved1;
+	u16 tclkdiv;	u16 reserved2;
+	u16 tfsdiv;	u16 reserved3;
+	u32 tx;
+	u32 reserved_l0;
+	u32 rx;
+	u32 reserved_l1;
+	u16 rcr1;	u16 reserved4;
+	u16 rcr2;	u16 reserved5;
+	u16 rclkdiv;	u16 reserved6;
+	u16 rfsdiv;	u16 reserved7;
+	u16 stat;	u16 reserved8;
+	u16 chnl;	u16 reserved9;
+	u16 mcmc1;	u16 reserved10;
+	u16 mcmc2;	u16 reserved11;
+	u32 mtcs0;
+	u32 mtcs1;
+	u32 mtcs2;
+	u32 mtcs3;
+	u32 mrcs0;
+	u32 mrcs1;
+	u32 mrcs2;
+	u32 mrcs3;
+};
+
+#define DESC_ELEMENT_COUNT 9
+
+struct sport_device {
+	int dma_rx_chan;
+	int dma_tx_chan;
+	int err_irq;
+	struct sport_register *regs;
+
+	unsigned char *rx_buf;
+	unsigned char *tx_buf;
+	unsigned int rx_fragsize;
+	unsigned int tx_fragsize;
+	unsigned int rx_frags;
+	unsigned int tx_frags;
+	unsigned int wdsize;
+
+	/* for dummy dma transfer */
+	void *dummy_buf;
+	unsigned int dummy_count;
+
+	/* DMA descriptor ring head of current audio stream*/
+	struct dmasg *dma_rx_desc;
+	struct dmasg *dma_tx_desc;
+	unsigned int rx_desc_bytes;
+	unsigned int tx_desc_bytes;
+
+	unsigned int rx_run:1; /* rx is running */
+	unsigned int tx_run:1; /* tx is running */
+
+	struct dmasg *dummy_rx_desc;
+	struct dmasg *dummy_tx_desc;
+
+	struct dmasg *curr_rx_desc;
+	struct dmasg *curr_tx_desc;
+
+	int rx_curr_frag;
+	int tx_curr_frag;
+
+	unsigned int rcr1;
+	unsigned int rcr2;
+	int rx_tdm_count;
+
+	unsigned int tcr1;
+	unsigned int tcr2;
+	int tx_tdm_count;
+
+	void (*rx_callback)(void *data);
+	void *rx_data;
+	void (*tx_callback)(void *data);
+	void *tx_data;
+	void (*err_callback)(void *data);
+	void *err_data;
+	unsigned char *tx_dma_buf;
+	unsigned char *rx_dma_buf;
+#ifdef CONFIG_SND_BF5XX_MMAP_SUPPORT
+	dma_addr_t tx_dma_phy;
+	dma_addr_t rx_dma_phy;
+	int tx_pos;/*pcm sample count*/
+	int rx_pos;
+	unsigned int tx_buffer_size;
+	unsigned int rx_buffer_size;
+	int tx_delay_pos;
+	int once;
+#endif
+	void *private_data;
+};
+
+extern struct sport_device *sport_handle;
+
+struct sport_param {
+	int dma_rx_chan;
+	int dma_tx_chan;
+	int err_irq;
+	struct sport_register *regs;
+};
+
+struct sport_device *sport_init(struct sport_param *param, unsigned wdsize,
+		unsigned dummy_count, void *private_data);
+
+void sport_done(struct sport_device *sport);
+
+/* first use these ...*/
+
+/* note: multichannel is in units of 8 channels, tdm_count is number of channels
+ *  NOT / 8 ! all channels are enabled by default */
+int sport_set_multichannel(struct sport_device *sport, int tdm_count,
+		u32 mask, int packed);
+
+int sport_config_rx(struct sport_device *sport,
+		unsigned int rcr1, unsigned int rcr2,
+		unsigned int clkdiv, unsigned int fsdiv);
+
+int sport_config_tx(struct sport_device *sport,
+		unsigned int tcr1, unsigned int tcr2,
+		unsigned int clkdiv, unsigned int fsdiv);
+
+/* ... then these: */
+
+/* buffer size (in bytes) == fragcount * fragsize_bytes */
+
+/* this is not a very general api, it sets the dma to 2d autobuffer mode */
+
+int sport_config_rx_dma(struct sport_device *sport, void *buf,
+		int fragcount, size_t fragsize_bytes);
+
+int sport_config_tx_dma(struct sport_device *sport, void *buf,
+		int fragcount, size_t fragsize_bytes);
+
+int sport_tx_start(struct sport_device *sport);
+int sport_tx_stop(struct sport_device *sport);
+int sport_rx_start(struct sport_device *sport);
+int sport_rx_stop(struct sport_device *sport);
+
+/* for use in interrupt handler */
+unsigned long sport_curr_offset_rx(struct sport_device *sport);
+unsigned long sport_curr_offset_tx(struct sport_device *sport);
+
+void sport_incfrag(struct sport_device *sport, int *frag, int tx);
+void sport_decfrag(struct sport_device *sport, int *frag, int tx);
+
+int sport_set_rx_callback(struct sport_device *sport,
+		       void (*rx_callback)(void *), void *rx_data);
+int sport_set_tx_callback(struct sport_device *sport,
+		       void (*tx_callback)(void *), void *tx_data);
+int sport_set_err_callback(struct sport_device *sport,
+		       void (*err_callback)(void *), void *err_data);
+
+int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \
+		u8 *in_data, int len);
+#endif /* BF53X_SPORT_H */

kernel/sound/soc/blackfin/bf5xx-ssm2602.c

@@ -0,0 +1,186 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ssm2602.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Tue June 06 2008
+ * Description:  board driver for SSM2602 sound chip
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/dma.h>
+#include <asm/portmux.h>
+#include <linux/gpio.h>
+#include "../codecs/ssm2602.h"
+#include "bf5xx-sport.h"
+#include "bf5xx-i2s-pcm.h"
+#include "bf5xx-i2s.h"
+
+static struct snd_soc_card bf5xx_ssm2602;
+
+static int bf5xx_ssm2602_startup(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+	pr_debug("%s enter\n", __func__);
+	cpu_dai->private_data = sport_handle;
+	return 0;
+}
+
+static int bf5xx_ssm2602_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	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;
+	unsigned int clk = 0;
+	int ret = 0;
+
+	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
+		params_format(params));
+	/*
+	 * If you are using a crystal source which frequency is not 12MHz
+	 * then modify the below case statement with frequency of the crystal.
+	 *
+	 * If you are using the SPORT to generate clocking then this is
+	 * where to do it.
+	 */
+
+	switch (params_rate(params)) {
+	case 8000:
+	case 16000:
+	case 48000:
+	case 96000:
+	case 11025:
+	case 22050:
+	case 44100:
+		clk = 12000000;
+		break;
+	}
+
+	/*
+	 * CODEC is master for BCLK and LRC in this configuration.
+	 */
+
+	/* set codec DAI configuration */
+	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
+		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+	/* set cpu DAI configuration */
+	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
+		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, SSM2602_SYSCLK, clk,
+		SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct snd_soc_ops bf5xx_ssm2602_ops = {
+	.startup = bf5xx_ssm2602_startup,
+	.hw_params = bf5xx_ssm2602_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ssm2602_dai = {
+	.name = "ssm2602",
+	.stream_name = "SSM2602",
+	.cpu_dai = &bf5xx_i2s_dai,
+	.codec_dai = &ssm2602_dai,
+	.ops = &bf5xx_ssm2602_ops,
+};
+
+/*
+ * SSM2602 2 wire address is determined by CSB
+ * state during powerup.
+ *    low  = 0x1a
+ *    high = 0x1b
+ */
+
+static struct ssm2602_setup_data bf5xx_ssm2602_setup = {
+	.i2c_bus = 0,
+	.i2c_address = 0x1b,
+};
+
+static struct snd_soc_card bf5xx_ssm2602 = {
+	.name = "bf5xx_ssm2602",
+	.platform = &bf5xx_i2s_soc_platform,
+	.dai_link = &bf5xx_ssm2602_dai,
+	.num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ssm2602_snd_devdata = {
+	.card = &bf5xx_ssm2602,
+	.codec_dev = &soc_codec_dev_ssm2602,
+	.codec_data = &bf5xx_ssm2602_setup,
+};
+
+static struct platform_device *bf5xx_ssm2602_snd_device;
+
+static int __init bf5xx_ssm2602_init(void)
+{
+	int ret;
+
+	pr_debug("%s enter\n", __func__);
+	bf5xx_ssm2602_snd_device = platform_device_alloc("soc-audio", -1);
+	if (!bf5xx_ssm2602_snd_device)
+		return -ENOMEM;
+
+	platform_set_drvdata(bf5xx_ssm2602_snd_device,
+				&bf5xx_ssm2602_snd_devdata);
+	bf5xx_ssm2602_snd_devdata.dev = &bf5xx_ssm2602_snd_device->dev;
+	ret = platform_device_add(bf5xx_ssm2602_snd_device);
+
+	if (ret)
+		platform_device_put(bf5xx_ssm2602_snd_device);
+
+	return ret;
+}
+
+static void __exit bf5xx_ssm2602_exit(void)
+{
+	pr_debug("%s enter\n", __func__);
+	platform_device_unregister(bf5xx_ssm2602_snd_device);
+}
+
+module_init(bf5xx_ssm2602_init);
+module_exit(bf5xx_ssm2602_exit);
+
+/* Module information */
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ALSA SoC SSM2602 BF527-EZKIT");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-tdm-pcm.c

@@ -0,0 +1,330 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-tdm-pcm.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Tue June 06 2009
+ * Description:  DMA driver for tdm codec
+ *
+ * Modified:
+ *               Copyright 2009 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <asm/dma.h>
+
+#include "bf5xx-tdm-pcm.h"
+#include "bf5xx-tdm.h"
+#include "bf5xx-sport.h"
+
+#define PCM_BUFFER_MAX  0x10000
+#define FRAGMENT_SIZE_MIN  (4*1024)
+#define FRAGMENTS_MIN  2
+#define FRAGMENTS_MAX  32
+
+static void bf5xx_dma_irq(void *data)
+{
+	struct snd_pcm_substream *pcm = data;
+	snd_pcm_period_elapsed(pcm);
+}
+
+static const struct snd_pcm_hardware bf5xx_pcm_hardware = {
+	.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		SNDRV_PCM_INFO_RESUME),
+	.formats =          SNDRV_PCM_FMTBIT_S32_LE,
+	.rates =            SNDRV_PCM_RATE_48000,
+	.channels_min =     2,
+	.channels_max =     8,
+	.buffer_bytes_max = PCM_BUFFER_MAX,
+	.period_bytes_min = FRAGMENT_SIZE_MIN,
+	.period_bytes_max = PCM_BUFFER_MAX/2,
+	.periods_min =      FRAGMENTS_MIN,
+	.periods_max =      FRAGMENTS_MAX,
+};
+
+static int bf5xx_pcm_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params)
+{
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max;
+	snd_pcm_lib_malloc_pages(substream, size * 4);
+
+	return 0;
+}
+
+static int bf5xx_pcm_hw_free(struct snd_pcm_substream *substream)
+{
+	snd_pcm_lib_free_pages(substream);
+
+	return 0;
+}
+
+static int bf5xx_pcm_prepare(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	int fragsize_bytes = frames_to_bytes(runtime, runtime->period_size);
+
+	fragsize_bytes /= runtime->channels;
+	/* inflate the fragsize to match the dma width of SPORT */
+	fragsize_bytes *= 8;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		sport_set_tx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_tx_dma(sport, runtime->dma_area,
+			runtime->periods, fragsize_bytes);
+	} else {
+		sport_set_rx_callback(sport, bf5xx_dma_irq, substream);
+		sport_config_rx_dma(sport, runtime->dma_area,
+			runtime->periods, fragsize_bytes);
+	}
+
+	return 0;
+}
+
+static int bf5xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	int ret = 0;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			sport_tx_start(sport);
+		else
+			sport_rx_start(sport);
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			sport_tx_stop(sport);
+		else
+			sport_rx_stop(sport);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct sport_device *sport = runtime->private_data;
+	unsigned int diff;
+	snd_pcm_uframes_t frames;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		diff = sport_curr_offset_tx(sport);
+		frames = diff / (8*4); /* 32 bytes per frame */
+	} else {
+		diff = sport_curr_offset_rx(sport);
+		frames = diff / (8*4);
+	}
+	return frames;
+}
+
+static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
+{
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int ret = 0;
+
+	snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware);
+
+	ret = snd_pcm_hw_constraint_integer(runtime,
+		SNDRV_PCM_HW_PARAM_PERIODS);
+	if (ret < 0)
+		goto out;
+
+	if (sport_handle != NULL)
+		runtime->private_data = sport_handle;
+	else {
+		pr_err("sport_handle is NULL\n");
+		ret = -ENODEV;
+	}
+out:
+	return ret;
+}
+
+static int bf5xx_pcm_copy(struct snd_pcm_substream *substream, int channel,
+	snd_pcm_uframes_t pos, void *buf, snd_pcm_uframes_t count)
+{
+	unsigned int *src;
+	unsigned int *dst;
+	int i;
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		src = buf;
+		dst = (unsigned int *)substream->runtime->dma_area;
+
+		dst += pos * 8;
+		while (count--) {
+			for (i = 0; i < substream->runtime->channels; i++)
+				*(dst + i) = *src++;
+			dst += 8;
+		}
+	} else {
+		src = (unsigned int *)substream->runtime->dma_area;
+		dst = buf;
+
+		src += pos * 8;
+		while (count--) {
+			for (i = 0; i < substream->runtime->channels; i++)
+				*dst++ = *(src+i);
+			src += 8;
+		}
+	}
+
+	return 0;
+}
+
+static int bf5xx_pcm_silence(struct snd_pcm_substream *substream,
+	int channel, snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
+{
+	unsigned char *buf = substream->runtime->dma_area;
+	buf += pos * 8 * 4;
+	memset(buf, '\0', count * 8 * 4);
+
+	return 0;
+}
+
+
+struct snd_pcm_ops bf5xx_pcm_tdm_ops = {
+	.open           = bf5xx_pcm_open,
+	.ioctl          = snd_pcm_lib_ioctl,
+	.hw_params      = bf5xx_pcm_hw_params,
+	.hw_free        = bf5xx_pcm_hw_free,
+	.prepare        = bf5xx_pcm_prepare,
+	.trigger        = bf5xx_pcm_trigger,
+	.pointer        = bf5xx_pcm_pointer,
+	.copy           = bf5xx_pcm_copy,
+	.silence        = bf5xx_pcm_silence,
+};
+
+static int bf5xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
+{
+	struct snd_pcm_substream *substream = pcm->streams[stream].substream;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
+	size_t size = bf5xx_pcm_hardware.buffer_bytes_max;
+
+	buf->dev.type = SNDRV_DMA_TYPE_DEV;
+	buf->dev.dev = pcm->card->dev;
+	buf->private_data = NULL;
+	buf->area = dma_alloc_coherent(pcm->card->dev, size * 4,
+		&buf->addr, GFP_KERNEL);
+	if (!buf->area) {
+		pr_err("Failed to allocate dma memory \
+			Please increase uncached DMA memory region\n");
+		return -ENOMEM;
+	}
+	buf->bytes = size;
+
+	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
+		sport_handle->tx_buf = buf->area;
+	else
+		sport_handle->rx_buf = buf->area;
+
+	return 0;
+}
+
+static void bf5xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
+{
+	struct snd_pcm_substream *substream;
+	struct snd_dma_buffer *buf;
+	int stream;
+
+	for (stream = 0; stream < 2; stream++) {
+		substream = pcm->streams[stream].substream;
+		if (!substream)
+			continue;
+
+		buf = &substream->dma_buffer;
+		if (!buf->area)
+			continue;
+		dma_free_coherent(NULL, buf->bytes, buf->area, 0);
+		buf->area = NULL;
+	}
+	if (sport_handle)
+		sport_done(sport_handle);
+}
+
+static u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32);
+
+static int bf5xx_pcm_tdm_new(struct snd_card *card, struct snd_soc_dai *dai,
+	struct snd_pcm *pcm)
+{
+	int ret = 0;
+
+	if (!card->dev->dma_mask)
+		card->dev->dma_mask = &bf5xx_pcm_dmamask;
+	if (!card->dev->coherent_dma_mask)
+		card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
+
+	if (dai->playback.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_PLAYBACK);
+		if (ret)
+			goto out;
+	}
+
+	if (dai->capture.channels_min) {
+		ret = bf5xx_pcm_preallocate_dma_buffer(pcm,
+			SNDRV_PCM_STREAM_CAPTURE);
+		if (ret)
+			goto out;
+	}
+out:
+	return ret;
+}
+
+struct snd_soc_platform bf5xx_tdm_soc_platform = {
+	.name           = "bf5xx-audio",
+	.pcm_ops        = &bf5xx_pcm_tdm_ops,
+	.pcm_new        = bf5xx_pcm_tdm_new,
+	.pcm_free       = bf5xx_pcm_free_dma_buffers,
+};
+EXPORT_SYMBOL_GPL(bf5xx_tdm_soc_platform);
+
+static int __init bfin_pcm_tdm_init(void)
+{
+	return snd_soc_register_platform(&bf5xx_tdm_soc_platform);
+}
+module_init(bfin_pcm_tdm_init);
+
+static void __exit bfin_pcm_tdm_exit(void)
+{
+	snd_soc_unregister_platform(&bf5xx_tdm_soc_platform);
+}
+module_exit(bfin_pcm_tdm_exit);
+
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("ADI Blackfin TDM PCM DMA module");
+MODULE_LICENSE("GPL");

kernel/sound/soc/blackfin/bf5xx-tdm-pcm.h

@@ -0,0 +1,21 @@
+/*
+ * sound/soc/blackfin/bf5xx-tdm-pcm.h -- ALSA PCM interface for the Blackfin
+ *
+ * Copyright 2009 Analog Device Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_TDM_PCM_H
+#define _BF5XX_TDM_PCM_H
+
+struct bf5xx_pcm_dma_params {
+	char *name;                     /* stream identifier */
+};
+
+/* platform data */
+extern struct snd_soc_platform bf5xx_tdm_soc_platform;
+
+#endif

kernel/sound/soc/blackfin/bf5xx-tdm.c

@@ -0,0 +1,343 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-tdm.c
+ * Author:       Barry Song <Barry.Song@analog.com>
+ *
+ * Created:      Thurs June 04 2009
+ * Description:  Blackfin I2S(TDM) CPU DAI driver
+ *              Even though TDM mode can be as part of I2S DAI, but there
+ *              are so much difference in configuration and data flow,
+ *              it's very ugly to integrate I2S and TDM into a module
+ *
+ * Modified:
+ *               Copyright 2009 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <asm/irq.h>
+#include <asm/portmux.h>
+#include <linux/mutex.h>
+#include <linux/gpio.h>
+
+#include "bf5xx-sport.h"
+#include "bf5xx-tdm.h"
+
+struct bf5xx_tdm_port {
+	u16 tcr1;
+	u16 rcr1;
+	u16 tcr2;
+	u16 rcr2;
+	int configured;
+};
+
+static struct bf5xx_tdm_port bf5xx_tdm;
+static int sport_num = CONFIG_SND_BF5XX_SPORT_NUM;
+
+static struct sport_param sport_params[2] = {
+	{
+		.dma_rx_chan    = CH_SPORT0_RX,
+		.dma_tx_chan    = CH_SPORT0_TX,
+		.err_irq        = IRQ_SPORT0_ERROR,
+		.regs           = (struct sport_register *)SPORT0_TCR1,
+	},
+	{
+		.dma_rx_chan    = CH_SPORT1_RX,
+		.dma_tx_chan    = CH_SPORT1_TX,
+		.err_irq        = IRQ_SPORT1_ERROR,
+		.regs           = (struct sport_register *)SPORT1_TCR1,
+	}
+};
+
+/*
+ * Setting the TFS pin selector for SPORT 0 based on whether the selected
+ * port id F or G. If the port is F then no conflict should exist for the
+ * TFS. When Port G is selected and EMAC then there is a conflict between
+ * the PHY interrupt line and TFS.  Current settings prevent the conflict
+ * by ignoring the TFS pin when Port G is selected. This allows both
+ * codecs and EMAC using Port G concurrently.
+ */
+#ifdef CONFIG_BF527_SPORT0_PORTG
+#define LOCAL_SPORT0_TFS (0)
+#else
+#define LOCAL_SPORT0_TFS (P_SPORT0_TFS)
+#endif
+
+static u16 sport_req[][7] = { {P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
+	P_SPORT0_DRPRI, P_SPORT0_RSCLK, LOCAL_SPORT0_TFS, 0},
+	   {P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS, P_SPORT1_DRPRI,
+		   P_SPORT1_RSCLK, P_SPORT1_TFS, 0} };
+
+static int bf5xx_tdm_set_dai_fmt(struct snd_soc_dai *cpu_dai,
+	unsigned int fmt)
+{
+	int ret = 0;
+
+	/* interface format:support TDM,slave mode */
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_DSP_A:
+		break;
+	default:
+		printk(KERN_ERR "%s: Unknown DAI format type\n", __func__);
+		ret = -EINVAL;
+		break;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM:
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+	case SND_SOC_DAIFMT_CBM_CFS:
+	case SND_SOC_DAIFMT_CBS_CFM:
+		ret = -EINVAL;
+		break;
+	default:
+		printk(KERN_ERR "%s: Unknown DAI master type\n", __func__);
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static int bf5xx_tdm_hw_params(struct snd_pcm_substream *substream,
+	struct snd_pcm_hw_params *params,
+	struct snd_soc_dai *dai)
+{
+	int ret = 0;
+
+	bf5xx_tdm.tcr2 &= ~0x1f;
+	bf5xx_tdm.rcr2 &= ~0x1f;
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_S32_LE:
+		bf5xx_tdm.tcr2 |= 31;
+		bf5xx_tdm.rcr2 |= 31;
+		sport_handle->wdsize = 4;
+		break;
+		/* at present, we only support 32bit transfer */
+	default:
+		pr_err("not supported PCM format yet\n");
+		return -EINVAL;
+		break;
+	}
+
+	if (!bf5xx_tdm.configured) {
+		/*
+		 * TX and RX are not independent,they are enabled at the
+		 * same time, even if only one side is running. So, we
+		 * need to configure both of them at the time when the first
+		 * stream is opened.
+		 *
+		 * CPU DAI:slave mode.
+		 */
+		ret = sport_config_rx(sport_handle, bf5xx_tdm.rcr1,
+			bf5xx_tdm.rcr2, 0, 0);
+		if (ret) {
+			pr_err("SPORT is busy!\n");
+			return -EBUSY;
+		}
+
+		ret = sport_config_tx(sport_handle, bf5xx_tdm.tcr1,
+			bf5xx_tdm.tcr2, 0, 0);
+		if (ret) {
+			pr_err("SPORT is busy!\n");
+			return -EBUSY;
+		}
+
+		bf5xx_tdm.configured = 1;
+	}
+
+	return 0;
+}
+
+static void bf5xx_tdm_shutdown(struct snd_pcm_substream *substream,
+	struct snd_soc_dai *dai)
+{
+	/* No active stream, SPORT is allowed to be configured again. */
+	if (!dai->active)
+		bf5xx_tdm.configured = 0;
+}
+
+#ifdef CONFIG_PM
+static int bf5xx_tdm_suspend(struct snd_soc_dai *dai)
+{
+	struct sport_device *sport =
+		(struct sport_device *)dai->private_data;
+
+	if (!dai->active)
+		return 0;
+	if (dai->capture.active)
+		sport_rx_stop(sport);
+	if (dai->playback.active)
+		sport_tx_stop(sport);
+	return 0;
+}
+
+static int bf5xx_tdm_resume(struct snd_soc_dai *dai)
+{
+	int ret;
+	struct sport_device *sport =
+		(struct sport_device *)dai->private_data;
+
+	if (!dai->active)
+		return 0;
+
+	ret = sport_set_multichannel(sport, 8, 0xFF, 1);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+	}
+
+	ret = sport_config_rx(sport, IRFS, 0x1F, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+	}
+
+	ret = sport_config_tx(sport, ITFS, 0x1F, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+	}
+
+	return 0;
+}
+
+#else
+#define bf5xx_tdm_suspend      NULL
+#define bf5xx_tdm_resume       NULL
+#endif
+
+static struct snd_soc_dai_ops bf5xx_tdm_dai_ops = {
+	.hw_params      = bf5xx_tdm_hw_params,
+	.set_fmt        = bf5xx_tdm_set_dai_fmt,
+	.shutdown       = bf5xx_tdm_shutdown,
+};
+
+struct snd_soc_dai bf5xx_tdm_dai = {
+	.name = "bf5xx-tdm",
+	.id = 0,
+	.suspend = bf5xx_tdm_suspend,
+	.resume = bf5xx_tdm_resume,
+	.playback = {
+		.channels_min = 2,
+		.channels_max = 8,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE,},
+	.capture = {
+		.channels_min = 2,
+		.channels_max = 8,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE,},
+	.ops = &bf5xx_tdm_dai_ops,
+};
+EXPORT_SYMBOL_GPL(bf5xx_tdm_dai);
+
+static int __devinit bfin_tdm_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	if (peripheral_request_list(&sport_req[sport_num][0], "soc-audio")) {
+		pr_err("Requesting Peripherals failed\n");
+		return -EFAULT;
+	}
+
+	/* request DMA for SPORT */
+	sport_handle = sport_init(&sport_params[sport_num], 4, \
+		8 * sizeof(u32), NULL);
+	if (!sport_handle) {
+		peripheral_free_list(&sport_req[sport_num][0]);
+		return -ENODEV;
+	}
+
+	/* SPORT works in TDM mode */
+	ret = sport_set_multichannel(sport_handle, 8, 0xFF, 1);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	ret = sport_config_rx(sport_handle, IRFS, 0x1F, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	ret = sport_config_tx(sport_handle, ITFS, 0x1F, 0, 0);
+	if (ret) {
+		pr_err("SPORT is busy!\n");
+		ret = -EBUSY;
+		goto sport_config_err;
+	}
+
+	ret = snd_soc_register_dai(&bf5xx_tdm_dai);
+	if (ret) {
+		pr_err("Failed to register DAI: %d\n", ret);
+		goto sport_config_err;
+	}
+	return 0;
+
+sport_config_err:
+	peripheral_free_list(&sport_req[sport_num][0]);
+	return ret;
+}
+
+static int __devexit bfin_tdm_remove(struct platform_device *pdev)
+{
+	peripheral_free_list(&sport_req[sport_num][0]);
+	snd_soc_unregister_dai(&bf5xx_tdm_dai);
+
+	return 0;
+}
+
+static struct platform_driver bfin_tdm_driver = {
+	.probe  = bfin_tdm_probe,
+	.remove = __devexit_p(bfin_tdm_remove),
+	.driver = {
+		.name   = "bfin-tdm",
+		.owner  = THIS_MODULE,
+	},
+};
+
+static int __init bfin_tdm_init(void)
+{
+	return platform_driver_register(&bfin_tdm_driver);
+}
+module_init(bfin_tdm_init);
+
+static void __exit bfin_tdm_exit(void)
+{
+	platform_driver_unregister(&bfin_tdm_driver);
+}
+module_exit(bfin_tdm_exit);
+
+/* Module information */
+MODULE_AUTHOR("Barry Song");
+MODULE_DESCRIPTION("TDM driver for ADI Blackfin");
+MODULE_LICENSE("GPL");
+

kernel/sound/soc/blackfin/bf5xx-tdm.h

@@ -0,0 +1,14 @@
+/*
+ * sound/soc/blackfin/bf5xx-tdm.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _BF5XX_TDM_H
+#define _BF5XX_TDM_H
+
+extern struct snd_soc_dai bf5xx_tdm_dai;
+
+#endif