This provides an ASoC DAI interface for Tegra's I2S controller.
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
arch/arm/mach-tegra/Kconfig | 2 +
sound/soc/tegra/Kconfig | 13 ++
sound/soc/tegra/Makefile | 2 +
sound/soc/tegra/tegra_i2s.c | 468 +++++++++++++++++++++++++++++++++++++++++++
sound/soc/tegra/tegra_i2s.h | 166 +++++++++++++++
5 files changed, 651 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/tegra/tegra_i2s.c
create mode 100644 sound/soc/tegra/tegra_i2s.h
diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index d89d9b3..dedac6c 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -102,3 +102,5 @@ config TEGRA_I2S_AUDIO
default n
help
Say Y if you want to add support for i2s audio on tegra.
+
+ This option conflicts with SND_TEGRA_SOC_I2S.
diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index f568b2a..d6b0444 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -4,3 +4,16 @@ config SND_TEGRA_SOC
default m
help
Say Y or M here if you want support for SoC audio on Tegra.
+
+config SND_TEGRA_SOC_I2S
+ tristate
+ depends on SND_TEGRA_SOC
+ depends on !TEGRA_I2S_AUDIO
+ default m
+ help
+ Say Y or M if you want to add support for codecs attached to the
+ Tegra I2S interface. You will also need to select the individual
+ machine drivers to support below.
+
+ This option conflicts with TEGRA_I2S_AUDIO.
+
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
index 3c90e79..d7712a2 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -1,7 +1,9 @@
# Tegra platform Support
snd-soc-tegra-das-objs := tegra_das.o
snd-soc-tegra-pcm-objs := tegra_pcm.o
+snd-soc-tegra-i2s-objs := tegra_i2s.o
obj-$(CONFIG_SND_TEGRA_SOC) += snd-soc-tegra-das.o
obj-$(CONFIG_SND_TEGRA_SOC) += snd-soc-tegra-pcm.o
+obj-$(CONFIG_SND_TEGRA_SOC_I2S) += snd-soc-tegra-i2s.o
diff --git a/sound/soc/tegra/tegra_i2s.c b/sound/soc/tegra/tegra_i2s.c
new file mode 100644
index 0000000..dd6547f
--- /dev/null
+++ b/sound/soc/tegra/tegra_i2s.c
@@ -0,0 +1,468 @@
+/*
+ * tegra_i2s.c - Tegra I2S driver
+ *
+ * Author: Stephen Warren <swarren@xxxxxxxxxx>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@xxxxxxxxxx>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@xxxxxxxxxx>
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <mach/iomap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra_i2s.h"
+
+#define DRV_NAME "tegra-i2s"
+
+static inline void tegra_i2s_write(struct tegra_i2s *i2s, u32 reg, u32 val)
+{
+ __raw_writel(val, i2s->regs + reg);
+}
+
+static inline u32 tegra_i2s_read(struct tegra_i2s *i2s, u32 reg)
+{
+ return __raw_readl(i2s->regs + reg);
+}
+
+#ifdef CONFIG_DEBUG_FS
+static int tegra_i2s_show(struct seq_file *s, void *unused)
+{
+#define REG(r) { r, #r }
+ static const struct {
+ int offset;
+ const char *name;
+ } regs[] = {
+ REG(TEGRA_I2S_CTRL),
+ REG(TEGRA_I2S_STATUS),
+ REG(TEGRA_I2S_TIMING),
+ REG(TEGRA_I2S_FIFO_SCR),
+ REG(TEGRA_I2S_PCM_CTRL),
+ REG(TEGRA_I2S_NW_CTRL),
+ REG(TEGRA_I2S_TDM_CTRL),
+ REG(TEGRA_I2S_TDM_TX_RX_CTRL),
+ };
+#undef REG
+
+ struct tegra_i2s *i2s = s->private;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(regs); i++) {
+ u32 val = tegra_i2s_read(i2s, regs[i].offset);
+ seq_printf(s, "%s = %08x\n", regs[i].name, val);
+ }
+
+ return 0;
+}
+
+static int tegra_i2s_debug_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, tegra_i2s_show, inode->i_private);
+}
+
+static const struct file_operations tegra_i2s_debug_fops = {
+ .open = tegra_i2s_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void tegra_i2s_debug_add(struct tegra_i2s *i2s)
+{
+ char name[] = DRV_NAME ".0";
+
+ snprintf(name, sizeof(name), DRV_NAME".%1d", i2s->pdev->id);
+ i2s->debug = debugfs_create_file(name, S_IRUGO, NULL, i2s,
+ &tegra_i2s_debug_fops);
+}
+
+static void tegra_i2s_debug_remove(struct tegra_i2s *i2s)
+{
+ if (i2s->debug)
+ debugfs_remove(i2s->debug);
+}
+#else
+static inline void tegra_i2s_debug_add(struct tegra_i2s *i2s)
+{
+}
+
+static inline void tegra_i2s_debug_remove(struct tegra_i2s *i2s)
+{
+}
+#endif
+
+static int tegra_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
+ unsigned int freq, int dir)
+{
+ struct tegra_i2s *i2s = dai->private_data;
+
+ i2s->sysclk = freq;
+
+ return 0;
+}
+
+static int tegra_i2s_set_fmt(struct snd_soc_dai *dai,
+ unsigned int fmt)
+{
+ struct tegra_i2s *i2s = dai->private_data;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ case SND_SOC_DAIFMT_IB_NF:
+ case SND_SOC_DAIFMT_NB_IF:
+ /*
+ * Tegra does not support bit/frame clock inversion.
+ */
+ default:
+ return -EINVAL;
+ }
+
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_MASTER_ENABLE;
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_MASTER_ENABLE;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM:
+ case SND_SOC_DAIFMT_CBM_CFS:
+ /*
+ * Tegra does not support different combinations of
+ * master and slave for FSYNC and BCLK
+ */
+ default:
+ return -EINVAL;
+ }
+
+ i2s->reg_ctrl &= ~(TEGRA_I2S_CTRL_BIT_FORMAT_MASK |
+ TEGRA_I2S_CTRL_LRCK_MASK);
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_DSP;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_DSP;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_R_LOW;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_I2S;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_RJM;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_FORMAT_LJM;
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_LRCK_L_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tegra_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct tegra_i2s *i2s = dai->private_data;
+ u32 reg;
+ int srate;
+ int bitcnt;
+
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_BIT_SIZE_MASK;
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_16;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_24;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_BIT_SIZE_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ srate = params_rate(params);
+ bitcnt = (i2s->sysclk / (2 * srate)) - 1;
+ if (bitcnt < 0 || bitcnt > TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US)
+ return -EINVAL;
+ reg = bitcnt << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT;
+
+ if (i2s->sysclk % (2 * srate))
+ reg |= TEGRA_I2S_TIMING_NON_SYM_ENABLE;
+
+ tegra_i2s_write(i2s, TEGRA_I2S_TIMING, reg);
+
+ tegra_i2s_write(i2s, TEGRA_I2S_FIFO_SCR,
+ TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS |
+ TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS);
+
+ return 0;
+}
+
+static void tegra_i2s_start_playback(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_FIFO1_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_stop_playback(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_FIFO1_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_start_capture(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl |= TEGRA_I2S_CTRL_FIFO2_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static void tegra_i2s_stop_capture(struct tegra_i2s *i2s)
+{
+ i2s->reg_ctrl &= ~TEGRA_I2S_CTRL_FIFO2_ENABLE;
+ tegra_i2s_write(i2s, TEGRA_I2S_CTRL, i2s->reg_ctrl);
+}
+
+static int tegra_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct tegra_i2s *i2s = dai->private_data;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ tegra_i2s_start_playback(i2s);
+ else
+ tegra_i2s_start_capture(i2s);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ tegra_i2s_stop_playback(i2s);
+ else
+ tegra_i2s_stop_capture(i2s);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops tegra_i2s_dai_ops = {
+ .set_sysclk = tegra_i2s_set_sysclk,
+ .set_fmt = tegra_i2s_set_fmt,
+ .hw_params = tegra_i2s_hw_params,
+ .trigger = tegra_i2s_trigger,
+};
+
+struct snd_soc_dai tegra_i2s_dai[] = {
+ {
+ .name = DRV_NAME ".0",
+ .id = 0,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &tegra_i2s_dai_ops,
+ .symmetric_rates = 1,
+ },
+ {
+ .name = DRV_NAME ".1",
+ .id = 1,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .ops = &tegra_i2s_dai_ops,
+ .symmetric_rates = 1,
+ },
+};
+EXPORT_SYMBOL_GPL(tegra_i2s_dai);
+
+static int tegra_i2s_probe(struct platform_device *pdev)
+{
+ static struct tegra_i2s * i2s;
+ struct resource *mem, *memregion, *dmareq;
+ int ret = 0;
+
+ i2s = kzalloc(sizeof(struct tegra_i2s), GFP_KERNEL);
+ if (!i2s) {
+ dev_err(&pdev->dev, "Can't allocate tegra_i2s\n");
+ ret = -ENOMEM;
+ goto exit;
+ }
+ i2s->pdev = pdev;
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem) {
+ dev_err(&pdev->dev, "No memory resource\n");
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (!dmareq) {
+ dev_err(&pdev->dev, "No DMA resource\n");
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ memregion = request_mem_region(mem->start, resource_size(mem),
+ DRV_NAME);
+ if (!memregion) {
+ dev_err(&pdev->dev, "Memory region already claimed\n");
+ ret = -EBUSY;
+ goto err_free;
+ }
+
+ i2s->regs = ioremap(mem->start, resource_size(mem));
+ if (!i2s->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_release;
+ }
+
+ i2s->dma_params[0].addr = mem->start + TEGRA_I2S_FIFO2;
+ i2s->dma_params[0].wrap = 4;
+ i2s->dma_params[0].width = 32;
+ i2s->dma_params[0].req_sel = dmareq->start;
+
+ i2s->dma_params[1].addr = mem->start + TEGRA_I2S_FIFO1;
+ i2s->dma_params[1].wrap = 4;
+ i2s->dma_params[1].width = 32;
+ i2s->dma_params[1].req_sel = dmareq->start;
+
+ tegra_i2s_dai[pdev->id].private_data = i2s;
+ tegra_i2s_dai[pdev->id].capture.dma_data = &i2s->dma_params[0];
+ tegra_i2s_dai[pdev->id].playback.dma_data = &i2s->dma_params[1];
+ tegra_i2s_dai[pdev->id].dev = &pdev->dev;
+
+ ret = snd_soc_register_dai(&tegra_i2s_dai[pdev->id]);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
+ ret = -ENOMEM;
+ goto err_unmap;
+ }
+
+ tegra_i2s_debug_add(i2s);
+
+ platform_set_drvdata(pdev, i2s);
+
+ i2s->reg_ctrl = TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED;
+
+ return 0;
+
+err_unmap:
+ iounmap(i2s->regs);
+err_release:
+ release_mem_region(mem->start, resource_size(mem));
+err_free:
+ kfree(i2s);
+exit:
+ return ret;
+}
+
+static int tegra_i2s_remove(struct platform_device *pdev)
+{
+ struct tegra_i2s *i2s = platform_get_drvdata(pdev);
+ struct resource *res;
+
+ platform_set_drvdata(pdev, NULL);
+
+ tegra_i2s_debug_remove(i2s);
+
+ snd_soc_unregister_dai(&tegra_i2s_dai[pdev->id]);
+
+ iounmap(i2s->regs);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+
+ kfree(i2s);
+
+ return 0;
+}
+
+static struct platform_driver tegra_i2s_driver = {
+ .probe = tegra_i2s_probe,
+ .remove = tegra_i2s_remove,
+ .driver = {
+ .name = DRV_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init tegra_i2s_modinit(void)
+{
+ return platform_driver_register(&tegra_i2s_driver);
+}
+module_init(tegra_i2s_modinit);
+
+static void __exit tegra_i2s_modexit(void)
+{
+ platform_driver_unregister(&tegra_i2s_driver);
+}
+module_exit(tegra_i2s_modexit);
+
+MODULE_AUTHOR("Stephen Warren <swarren@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Tegra I2S ASoC driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/tegra/tegra_i2s.h b/sound/soc/tegra/tegra_i2s.h
new file mode 100644
index 0000000..2396221
--- /dev/null
+++ b/sound/soc/tegra/tegra_i2s.h
@@ -0,0 +1,166 @@
+/*
+ * tegra_i2s.h - Definitions for Tegra I2S driver
+ *
+ * Author: Stephen Warren <swarren@xxxxxxxxxx>
+ * Copyright (C) 2010 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Scott Peterson <speterson@xxxxxxxxxx>
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Iliyan Malchev <malchev@xxxxxxxxxx>
+ *
+ * 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.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_I2S_H__
+#define __TEGRA_I2S_H__
+
+#include "tegra_pcm.h"
+
+/* Register offsets from TEGRA_I2S1_BASE and TEGRA_I2S2_BASE */
+
+#define TEGRA_I2S_CTRL 0x00
+#define TEGRA_I2S_STATUS 0x04
+#define TEGRA_I2S_TIMING 0x08
+#define TEGRA_I2S_FIFO_SCR 0x0c
+#define TEGRA_I2S_PCM_CTRL 0x10
+#define TEGRA_I2S_NW_CTRL 0x14
+#define TEGRA_I2S_TDM_CTRL 0x20
+#define TEGRA_I2S_TDM_TX_RX_CTRL 0x24
+#define TEGRA_I2S_FIFO1 0x40
+#define TEGRA_I2S_FIFO2 0x80
+
+/* Fields in TEGRA_I2S_CTRL */
+
+#define TEGRA_I2S_CTRL_FIFO2_TX_ENABLE (1 << 30)
+#define TEGRA_I2S_CTRL_FIFO1_ENABLE (1 << 29)
+#define TEGRA_I2S_CTRL_FIFO2_ENABLE (1 << 28)
+#define TEGRA_I2S_CTRL_FIFO1_RX_ENABLE (1 << 27)
+#define TEGRA_I2S_CTRL_FIFO_LPBK_ENABLE (1 << 26)
+#define TEGRA_I2S_CTRL_MASTER_ENABLE (1 << 25)
+
+#define I2S_LRCK_LEFT_LOW 0
+#define I2S_LRCK_RIGHT_LOW 1
+#define I2S_LRCK_SHIFT 24
+
+#define TEGRA_I2S_CTRL_LRCK_MASK (1 << I2S_LRCK_SHIFT)
+#define TEGRA_I2S_CTRL_LRCK_L_LOW (I2S_LRCK_LEFT_LOW << I2S_LRCK_SHIFT)
+#define TEGRA_I2S_CTRL_LRCK_R_LOW (I2S_LRCK_RIGHT_LOW << I2S_LRCK_SHIFT)
+
+#define I2S_BIT_FORMAT_I2S 0
+#define I2S_BIT_FORMAT_RJM 1
+#define I2S_BIT_FORMAT_LJM 2
+#define I2S_BIT_FORMAT_DSP 3
+#define I2S_BIT_FORMAT_SHIFT 10
+
+#define TEGRA_I2S_CTRL_BIT_FORMAT_MASK (3 << I2S_BIT_FORMAT_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_I2S (I2S_BIT_FORMAT_I2S << 10)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_RJM (I2S_BIT_FORMAT_RJM << 10)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_LJM (I2S_BIT_FORMAT_LJM << 10)
+#define TEGRA_I2S_CTRL_BIT_FORMAT_DSP (I2S_BIT_FORMAT_DSP << 10)
+
+#define I2S_BIT_SIZE_16 0
+#define I2S_BIT_SIZE_20 1
+#define I2S_BIT_SIZE_24 2
+#define I2S_BIT_SIZE_32 3
+#define I2S_BIT_SIZE_SHIFT 8
+
+#define TEGRA_I2S_CTRL_BIT_SIZE_MASK (3 << I2S_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_16 (I2S_BIT_SIZE_16 << I2S_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_20 (I2S_BIT_SIZE_20 << I2S_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_24 (I2S_BIT_SIZE_24 << I2S_BIT_SIZE_SHIFT)
+#define TEGRA_I2S_CTRL_BIT_SIZE_32 (I2S_BIT_SIZE_32 << I2S_BIT_SIZE_SHIFT)
+
+#define I2S_FIFO_16_LSB 0
+#define I2S_FIFO_20_LSB 1
+#define I2S_FIFO_24_LSB 2
+#define I2S_FIFO_32 3
+#define I2S_FIFO_PACKED 7
+#define I2S_FIFO_SHIFT 4
+
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_MASK (7 << I2S_FIFO_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_16_LSB (I2S_FIFO_16_LSB << I2S_FIFO_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_20_LSB (I2S_FIFO_20_LSB << I2S_FIFO_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_24_LSB (I2S_FIFO_24_LSB << I2S_FIFO_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_32 (I2S_FIFO_32 << I2S_FIFO_SHIFT)
+#define TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED (I2S_FIFO_PACKED << I2S_FIFO_SHIFT)
+
+#define TEGRA_I2S_CTRL_IE_FIFO1_ERR (1 << 3)
+#define TEGRA_I2S_CTRL_IE_FIFO2_ERR (1 << 2)
+#define TEGRA_I2S_CTRL_QE_FIFO1 (1 << 1)
+#define TEGRA_I2S_CTRL_QE_FIFO2 (1 << 0)
+
+/* Fields in TEGRA_I2S_STATUS */
+
+#define TEGRA_I2S_STATUS_FIFO1_RDY (1 << 31)
+#define TEGRA_I2S_STATUS_FIFO2_RDY (1 << 30)
+#define TEGRA_I2S_STATUS_FIFO1_BSY (1 << 29)
+#define TEGRA_I2S_STATUS_FIFO2_BSY (1 << 28)
+#define TEGRA_I2S_STATUS_FIFO1_ERR (1 << 3)
+#define TEGRA_I2S_STATUS_FIFO2_ERR (1 << 2)
+#define TEGRA_I2S_STATUS_QS_FIFO1 (1 << 1)
+#define TEGRA_I2S_STATUS_QS_FIFO2 (1 << 0)
+
+/* Fields in TEGRA_I2S_TIMING */
+
+#define TEGRA_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff
+#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
+
+/* Fields in TEGRA_I2S_FIFO_SCR */
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_FULL_EMPTY_COUNT_SHIFT 24
+#define TEGRA_I2S_FIFO_SCR_FIFO1_FULL_EMPTY_COUNT_SHIFT 16
+#define TEGRA_I2S_FIFO_SCR_FIFO_FULL_EMPTY_COUNT_MASK 0x3f
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_CLR (1 << 12)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_CLR (1 << 8)
+
+#define I2S_FIFO_ATN_LVL_ONE_SLOT 0
+#define I2S_FIFO_ATN_LVL_FOUR_SLOTS 1
+#define I2S_FIFO_ATN_LVL_EIGHT_SLOTS 2
+#define I2S_FIFO_ATN_LVL_TWELVE_SLOTS 3
+#define I2S_FIFO2_ATN_LVL_SHIFT 4
+#define I2S_FIFO1_ATN_LVL_SHIFT 0
+
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_MASK (3 << I2S_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_ONE_SLOT (I2S_FIFO_ATN_LVL_ONE_SLOT << I2S_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS (I2S_FIFO_ATN_LVL_FOUR_SLOTS << I2S_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_EIGHT_SLOTS (I2S_FIFO_ATN_LVL_EIGHT_SLOTS << I2S_FIFO2_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_TWELVE_SLOTS (I2S_FIFO_ATN_LVL_TWELVE_SLOTS << I2S_FIFO2_ATN_LVL_SHIFT)
+
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_MASK (3 << I2S_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_ONE_SLOT (I2S_FIFO_ATN_LVL_ONE_SLOT << I2S_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS (I2S_FIFO_ATN_LVL_FOUR_SLOTS << I2S_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_EIGHT_SLOTS (I2S_FIFO_ATN_LVL_EIGHT_SLOTS << I2S_FIFO1_ATN_LVL_SHIFT)
+#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_TWELVE_SLOTS (I2S_FIFO_ATN_LVL_TWELVE_SLOTS << I2S_FIFO1_ATN_LVL_SHIFT)
+
+struct tegra_i2s {
+ struct platform_device *pdev;
+ struct tegra_pcm_dma_params dma_params[2];
+ void __iomem *regs;
+ struct dentry *debug;
+ unsigned int sysclk;
+ u32 reg_ctrl;
+};
+
+extern struct snd_soc_dai tegra_i2s_dai[];
+
+#endif
--
1.7.0.4
nvpublic
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