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ASoC: tegra: add tegra30-i2s driver

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This provides an ASoC DAI interface for Tegra 30's I2S controller.

Includes a squashed bugfix from Sumit Bhattacharya <sumitb@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2012-04-10 16:32:00 -06:00 committed by Mark Brown
parent be944d42cc
commit 4fb0384f3d
3 changed files with 793 additions and 0 deletions
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15
Documentation/devicetree/bindings/sound/nvidia,tegra30-i2s.txt Normal file
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NVIDIA Tegra30 I2S controller
Required properties:
- compatible : "nvidia,tegra30-i2s"
- reg : Should contain I2S registers location and length
- nvidia,ahub-cif-ids : The list of AHUB CIF IDs for this port, rx (playback)
first, tx (capture) second. See nvidia,tegra30-ahub.txt for values.
Example:
i2s@70002800 {
compatible = "nvidia,tegra30-i2s";
reg = <0x70080300 0x100>;
nvidia,ahub-cif-ids = <4 4>;
};

536
sound/soc/tegra/tegra30_i2s.c Normal file
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/*
* tegra30_i2s.c - Tegra30 I2S driver
*
* Author: Stephen Warren <swarren@nvidia.com>
* Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
*
* Based on code copyright/by:
*
* Copyright (c) 2009-2010, NVIDIA Corporation.
* Scott Peterson <speterson@nvidia.com>
*
* Copyright (C) 2010 Google, Inc.
* Iliyan Malchev <malchev@google.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 <http://www.gnu.org/licenses/>.
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "tegra30_ahub.h"
#include "tegra30_i2s.h"
#define DRV_NAME "tegra30-i2s"
static inline void tegra30_i2s_write(struct tegra30_i2s *i2s, u32 reg, u32 val)
{
regmap_write(i2s->regmap, reg, val);
}
static inline u32 tegra30_i2s_read(struct tegra30_i2s *i2s, u32 reg)
{
u32 val;
regmap_read(i2s->regmap, reg, &val);
return val;
}
static int tegra30_i2s_runtime_suspend(struct device *dev)
{
struct tegra30_i2s *i2s = dev_get_drvdata(dev);
regcache_cache_only(i2s->regmap, true);
clk_disable(i2s->clk_i2s);
return 0;
}
static int tegra30_i2s_runtime_resume(struct device *dev)
{
struct tegra30_i2s *i2s = dev_get_drvdata(dev);
int ret;
ret = clk_enable(i2s->clk_i2s);
if (ret) {
dev_err(dev, "clk_enable failed: %d\n", ret);
return ret;
}
regcache_cache_only(i2s->regmap, false);
return 0;
}
int tegra30_i2s_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
int ret;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
ret = tegra30_ahub_allocate_tx_fifo(&i2s->playback_fifo_cif,
&i2s->playback_dma_data.addr,
&i2s->playback_dma_data.req_sel);
i2s->playback_dma_data.wrap = 4;
i2s->playback_dma_data.width = 32;
tegra30_ahub_set_rx_cif_source(i2s->playback_i2s_cif,
i2s->playback_fifo_cif);
} else {
ret = tegra30_ahub_allocate_rx_fifo(&i2s->capture_fifo_cif,
&i2s->capture_dma_data.addr,
&i2s->capture_dma_data.req_sel);
i2s->capture_dma_data.wrap = 4;
i2s->capture_dma_data.width = 32;
tegra30_ahub_set_rx_cif_source(i2s->capture_fifo_cif,
i2s->capture_i2s_cif);
}
return ret;
}
void tegra30_i2s_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
tegra30_ahub_unset_rx_cif_source(i2s->playback_i2s_cif);
tegra30_ahub_free_tx_fifo(i2s->playback_fifo_cif);
} else {
tegra30_ahub_unset_rx_cif_source(i2s->capture_fifo_cif);
tegra30_ahub_free_rx_fifo(i2s->capture_fifo_cif);
}
}
static int tegra30_i2s_set_fmt(struct snd_soc_dai *dai,
unsigned int fmt)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
default:
return -EINVAL;
}
i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_MASTER_ENABLE;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_MASTER_ENABLE;
break;
case SND_SOC_DAIFMT_CBM_CFM:
break;
default:
return -EINVAL;
}
i2s->reg_ctrl &= ~(TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK |
TEGRA30_I2S_CTRL_LRCK_MASK);
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_DSP_B:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC;
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_R_LOW;
break;
case SND_SOC_DAIFMT_I2S:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_RIGHT_J:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
case SND_SOC_DAIFMT_LEFT_J:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK;
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_LRCK_L_LOW;
break;
default:
return -EINVAL;
}
return 0;
}
static int tegra30_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct device *dev = substream->pcm->card->dev;
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
u32 val;
int ret, sample_size, srate, i2sclock, bitcnt;
if (params_channels(params) != 2)
return -EINVAL;
i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_BIT_SIZE_MASK;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_BIT_SIZE_16;
sample_size = 16;
break;
default:
return -EINVAL;
}
srate = params_rate(params);
/* Final "* 2" required by Tegra hardware */
i2sclock = srate * params_channels(params) * sample_size * 2;
bitcnt = (i2sclock / (2 * srate)) - 1;
if (bitcnt < 0 || bitcnt > TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US)
return -EINVAL;
ret = clk_set_rate(i2s->clk_i2s, i2sclock);
if (ret) {
dev_err(dev, "Can't set I2S clock rate: %d\n", ret);
return ret;
}
val = bitcnt << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT;
if (i2sclock % (2 * srate))
val |= TEGRA30_I2S_TIMING_NON_SYM_ENABLE;
tegra30_i2s_write(i2s, TEGRA30_I2S_TIMING, val);
val = (0 << TEGRA30_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT) |
(1 << TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT) |
(1 << TEGRA30_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT) |
TEGRA30_AUDIOCIF_CTRL_AUDIO_BITS_16 |
TEGRA30_AUDIOCIF_CTRL_CLIENT_BITS_16;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
val |= TEGRA30_AUDIOCIF_CTRL_DIRECTION_RX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CIF_RX_CTRL, val);
} else {
val |= TEGRA30_AUDIOCIF_CTRL_DIRECTION_TX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CIF_TX_CTRL, val);
}
val = (1 << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT) |
(1 << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT);
tegra30_i2s_write(i2s, TEGRA30_I2S_OFFSET, val);
return 0;
}
static void tegra30_i2s_start_playback(struct tegra30_i2s *i2s)
{
tegra30_ahub_enable_tx_fifo(i2s->playback_fifo_cif);
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_XFER_EN_TX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
}
static void tegra30_i2s_stop_playback(struct tegra30_i2s *i2s)
{
tegra30_ahub_disable_tx_fifo(i2s->playback_fifo_cif);
i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_TX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
}
static void tegra30_i2s_start_capture(struct tegra30_i2s *i2s)
{
tegra30_ahub_enable_rx_fifo(i2s->capture_fifo_cif);
i2s->reg_ctrl |= TEGRA30_I2S_CTRL_XFER_EN_RX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
}
static void tegra30_i2s_stop_capture(struct tegra30_i2s *i2s)
{
tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif);
i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_RX;
tegra30_i2s_write(i2s, TEGRA30_I2S_CTRL, i2s->reg_ctrl);
}
static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
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)
tegra30_i2s_start_playback(i2s);
else
tegra30_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)
tegra30_i2s_stop_playback(i2s);
else
tegra30_i2s_stop_capture(i2s);
break;
default:
return -EINVAL;
}
return 0;
}
static int tegra30_i2s_probe(struct snd_soc_dai *dai)
{
struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai);
dai->capture_dma_data = &i2s->capture_dma_data;
dai->playback_dma_data = &i2s->playback_dma_data;
return 0;
}
static struct snd_soc_dai_ops tegra30_i2s_dai_ops = {
.startup = tegra30_i2s_startup,
.shutdown = tegra30_i2s_shutdown,
.set_fmt = tegra30_i2s_set_fmt,
.hw_params = tegra30_i2s_hw_params,
.trigger = tegra30_i2s_trigger,
};
static const struct snd_soc_dai_driver tegra30_i2s_dai_template = {
.probe = tegra30_i2s_probe,
.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 = &tegra30_i2s_dai_ops,
.symmetric_rates = 1,
};
static bool tegra30_i2s_wr_rd_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA30_I2S_CTRL:
case TEGRA30_I2S_TIMING:
case TEGRA30_I2S_OFFSET:
case TEGRA30_I2S_CH_CTRL:
case TEGRA30_I2S_SLOT_CTRL:
case TEGRA30_I2S_CIF_RX_CTRL:
case TEGRA30_I2S_CIF_TX_CTRL:
case TEGRA30_I2S_FLOWCTL:
case TEGRA30_I2S_TX_STEP:
case TEGRA30_I2S_FLOW_STATUS:
case TEGRA30_I2S_FLOW_TOTAL:
case TEGRA30_I2S_FLOW_OVER:
case TEGRA30_I2S_FLOW_UNDER:
case TEGRA30_I2S_LCOEF_1_4_0:
case TEGRA30_I2S_LCOEF_1_4_1:
case TEGRA30_I2S_LCOEF_1_4_2:
case TEGRA30_I2S_LCOEF_1_4_3:
case TEGRA30_I2S_LCOEF_1_4_4:
case TEGRA30_I2S_LCOEF_1_4_5:
case TEGRA30_I2S_LCOEF_2_4_0:
case TEGRA30_I2S_LCOEF_2_4_1:
case TEGRA30_I2S_LCOEF_2_4_2:
return true;
default:
return false;
};
}
static bool tegra30_i2s_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA30_I2S_FLOW_STATUS:
case TEGRA30_I2S_FLOW_TOTAL:
case TEGRA30_I2S_FLOW_OVER:
case TEGRA30_I2S_FLOW_UNDER:
return true;
default:
return false;
};
}
static const struct regmap_config tegra30_i2s_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = TEGRA30_I2S_LCOEF_2_4_2,
.writeable_reg = tegra30_i2s_wr_rd_reg,
.readable_reg = tegra30_i2s_wr_rd_reg,
.volatile_reg = tegra30_i2s_volatile_reg,
.cache_type = REGCACHE_RBTREE,
};
static __devinit int tegra30_i2s_platform_probe(struct platform_device *pdev)
{
struct tegra30_i2s *i2s;
u32 cif_ids[2];
struct resource *mem, *memregion;
void __iomem *regs;
int ret;
i2s = devm_kzalloc(&pdev->dev, sizeof(struct tegra30_i2s), GFP_KERNEL);
if (!i2s) {
dev_err(&pdev->dev, "Can't allocate tegra30_i2s\n");
ret = -ENOMEM;
goto err;
}
dev_set_drvdata(&pdev->dev, i2s);
i2s->dai = tegra30_i2s_dai_template;
i2s->dai.name = dev_name(&pdev->dev);
ret = of_property_read_u32_array(pdev->dev.of_node,
"nvidia,ahub-cif-ids", cif_ids,
ARRAY_SIZE(cif_ids));
if (ret < 0)
goto err;
i2s->playback_i2s_cif = cif_ids[0];
i2s->capture_i2s_cif = cif_ids[1];
i2s->clk_i2s = clk_get(&pdev->dev, NULL);
if (IS_ERR(i2s->clk_i2s)) {
dev_err(&pdev->dev, "Can't retrieve i2s clock\n");
ret = PTR_ERR(i2s->clk_i2s);
goto err;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem) {
dev_err(&pdev->dev, "No memory resource\n");
ret = -ENODEV;
goto err_clk_put;
}
memregion = devm_request_mem_region(&pdev->dev, mem->start,
resource_size(mem), DRV_NAME);
if (!memregion) {
dev_err(&pdev->dev, "Memory region already claimed\n");
ret = -EBUSY;
goto err_clk_put;
}
regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!regs) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -ENOMEM;
goto err_clk_put;
}
i2s->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&tegra30_i2s_regmap_config);
if (IS_ERR(i2s->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
ret = PTR_ERR(i2s->regmap);
goto err_clk_put;
}
regcache_cache_only(i2s->regmap, true);
pm_runtime_enable(&pdev->dev);
if (!pm_runtime_enabled(&pdev->dev)) {
ret = tegra30_i2s_runtime_resume(&pdev->dev);
if (ret)
goto err_pm_disable;
}
ret = snd_soc_register_dai(&pdev->dev, &i2s->dai);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
ret = -ENOMEM;
goto err_suspend;
}
ret = tegra_pcm_platform_register(&pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
goto err_unregister_dai;
}
return 0;
err_unregister_dai:
snd_soc_unregister_dai(&pdev->dev);
err_suspend:
if (!pm_runtime_status_suspended(&pdev->dev))
tegra30_i2s_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
err_clk_put:
clk_put(i2s->clk_i2s);
err:
return ret;
}
static int __devexit tegra30_i2s_platform_remove(struct platform_device *pdev)
{
struct tegra30_i2s *i2s = dev_get_drvdata(&pdev->dev);
pm_runtime_disable(&pdev->dev);
if (!pm_runtime_status_suspended(&pdev->dev))
tegra30_i2s_runtime_suspend(&pdev->dev);
tegra_pcm_platform_unregister(&pdev->dev);
snd_soc_unregister_dai(&pdev->dev);
clk_put(i2s->clk_i2s);
return 0;
}
static const struct of_device_id tegra30_i2s_of_match[] __devinitconst = {
{ .compatible = "nvidia,tegra30-i2s", },
{},
};
static const struct dev_pm_ops tegra30_i2s_pm_ops __devinitconst = {
SET_RUNTIME_PM_OPS(tegra30_i2s_runtime_suspend,
tegra30_i2s_runtime_resume, NULL)
};
static struct platform_driver tegra30_i2s_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
.of_match_table = tegra30_i2s_of_match,
.pm = &tegra30_i2s_pm_ops,
},
.probe = tegra30_i2s_platform_probe,
.remove = __devexit_p(tegra30_i2s_platform_remove),
};
module_platform_driver(tegra30_i2s_driver);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra30 I2S ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra30_i2s_of_match);

242
sound/soc/tegra/tegra30_i2s.h Normal file
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/*
* tegra30_i2s.h - Definitions for Tegra30 I2S driver
*
* Copyright (c) 2011,2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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 <http://www.gnu.org/licenses/>.
*/
#ifndef __TEGRA30_I2S_H__
#define __TEGRA30_I2S_H__
#include "tegra_pcm.h"
/* Register offsets from TEGRA30_I2S*_BASE */
#define TEGRA30_I2S_CTRL 0x0
#define TEGRA30_I2S_TIMING 0x4
#define TEGRA30_I2S_OFFSET 0x08
#define TEGRA30_I2S_CH_CTRL 0x0c
#define TEGRA30_I2S_SLOT_CTRL 0x10
#define TEGRA30_I2S_CIF_RX_CTRL 0x14
#define TEGRA30_I2S_CIF_TX_CTRL 0x18
#define TEGRA30_I2S_FLOWCTL 0x1c
#define TEGRA30_I2S_TX_STEP 0x20
#define TEGRA30_I2S_FLOW_STATUS 0x24
#define TEGRA30_I2S_FLOW_TOTAL 0x28
#define TEGRA30_I2S_FLOW_OVER 0x2c
#define TEGRA30_I2S_FLOW_UNDER 0x30
#define TEGRA30_I2S_LCOEF_1_4_0 0x34
#define TEGRA30_I2S_LCOEF_1_4_1 0x38
#define TEGRA30_I2S_LCOEF_1_4_2 0x3c
#define TEGRA30_I2S_LCOEF_1_4_3 0x40
#define TEGRA30_I2S_LCOEF_1_4_4 0x44
#define TEGRA30_I2S_LCOEF_1_4_5 0x48
#define TEGRA30_I2S_LCOEF_2_4_0 0x4c
#define TEGRA30_I2S_LCOEF_2_4_1 0x50
#define TEGRA30_I2S_LCOEF_2_4_2 0x54
/* Fields in TEGRA30_I2S_CTRL */
#define TEGRA30_I2S_CTRL_XFER_EN_TX (1 << 31)
#define TEGRA30_I2S_CTRL_XFER_EN_RX (1 << 30)
#define TEGRA30_I2S_CTRL_CG_EN (1 << 29)
#define TEGRA30_I2S_CTRL_SOFT_RESET (1 << 28)
#define TEGRA30_I2S_CTRL_TX_FLOWCTL_EN (1 << 27)
#define TEGRA30_I2S_CTRL_OBS_SEL_SHIFT 24
#define TEGRA30_I2S_CTRL_OBS_SEL_MASK (7 << TEGRA30_I2S_CTRL_OBS_SEL_SHIFT)
#define TEGRA30_I2S_FRAME_FORMAT_LRCK 0
#define TEGRA30_I2S_FRAME_FORMAT_FSYNC 1
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT 12
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK (7 << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK (TEGRA30_I2S_FRAME_FORMAT_LRCK << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC (TEGRA30_I2S_FRAME_FORMAT_FSYNC << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_MASTER_ENABLE (1 << 10)
#define TEGRA30_I2S_LRCK_LEFT_LOW 0
#define TEGRA30_I2S_LRCK_RIGHT_LOW 1
#define TEGRA30_I2S_CTRL_LRCK_SHIFT 9
#define TEGRA30_I2S_CTRL_LRCK_MASK (1 << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LRCK_L_LOW (TEGRA30_I2S_LRCK_LEFT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LRCK_R_LOW (TEGRA30_I2S_LRCK_RIGHT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LPBK_ENABLE (1 << 8)
#define TEGRA30_I2S_BIT_CODE_LINEAR 0
#define TEGRA30_I2S_BIT_CODE_ULAW 1
#define TEGRA30_I2S_BIT_CODE_ALAW 2
#define TEGRA30_I2S_CTRL_BIT_CODE_SHIFT 4
#define TEGRA30_I2S_CTRL_BIT_CODE_MASK (3 << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_LINEAR (TEGRA30_I2S_BIT_CODE_LINEAR << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_ULAW (TEGRA30_I2S_BIT_CODE_ULAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_ALAW (TEGRA30_I2S_BIT_CODE_ALAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_BITS_8 1
#define TEGRA30_I2S_BITS_12 2
#define TEGRA30_I2S_BITS_16 3
#define TEGRA30_I2S_BITS_20 4
#define TEGRA30_I2S_BITS_24 5
#define TEGRA30_I2S_BITS_28 6
#define TEGRA30_I2S_BITS_32 7
/* Sample container size; see {RX,TX}_MASK field in CH_CTRL below */
#define TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT 0
#define TEGRA30_I2S_CTRL_BIT_SIZE_MASK (7 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_8 (TEGRA30_I2S_BITS_8 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_12 (TEGRA30_I2S_BITS_12 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_16 (TEGRA30_I2S_BITS_16 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_20 (TEGRA30_I2S_BITS_20 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_24 (TEGRA30_I2S_BITS_24 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_28 (TEGRA30_I2S_BITS_28 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_32 (TEGRA30_I2S_BITS_32 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
/* Fields in TEGRA30_I2S_TIMING */
#define TEGRA30_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
/* Fields in TEGRA30_I2S_OFFSET */
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT 16
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US 0x7ff
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT)
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT 0
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US 0x7ff
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT)
/* Fields in TEGRA30_I2S_CH_CTRL */
/* (FSYNC width - 1) in bit clocks */
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT 24
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US 0xff
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK (TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US << TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT)
#define TEGRA30_I2S_HIGHZ_NO 0
#define TEGRA30_I2S_HIGHZ_YES 1
#define TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK 2
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT 12
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_MASK (3 << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_NO (TEGRA30_I2S_HIGHZ_NO << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_YES (TEGRA30_I2S_HIGHZ_YES << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_ON_HALF_BIT_CLK (TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_MSB_FIRST 0
#define TEGRA30_I2S_LSB_FIRST 1
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT 10
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT 9
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_POS_EDGE 0
#define TEGRA30_I2S_NEG_EDGE 1
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT 8
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_MASK (1 << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_POS_EDGE (TEGRA30_I2S_POS_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_NEG_EDGE (TEGRA30_I2S_NEG_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
/* Sample size is # bits from BIT_SIZE minus this field */
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT 4
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US 7
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT 0
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US 7
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT)
/* Fields in TEGRA30_I2S_SLOT_CTRL */
/* Number of slots in frame, minus 1 */
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT 16
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK_US 7
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK (TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_MASK_US << TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_SHIFT)
/* TDM mode slot enable bitmask */
#define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT 8
#define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT)
#define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT 0
#define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT)
/* Fields in TEGRA30_I2S_CIF_RX_CTRL */
/* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
/* Fields in TEGRA30_I2S_CIF_TX_CTRL */
/* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
/* Fields in TEGRA30_I2S_FLOWCTL */
#define TEGRA30_I2S_FILTER_LINEAR 0
#define TEGRA30_I2S_FILTER_QUAD 1
#define TEGRA30_I2S_FLOWCTL_FILTER_SHIFT 31
#define TEGRA30_I2S_FLOWCTL_FILTER_MASK (1 << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
#define TEGRA30_I2S_FLOWCTL_FILTER_LINEAR (TEGRA30_I2S_FILTER_LINEAR << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
#define TEGRA30_I2S_FLOWCTL_FILTER_QUAD (TEGRA30_I2S_FILTER_QUAD << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
/* Fields in TEGRA30_I2S_TX_STEP */
#define TEGRA30_I2S_TX_STEP_SHIFT 0
#define TEGRA30_I2S_TX_STEP_MASK_US 0xffff
#define TEGRA30_I2S_TX_STEP_MASK (TEGRA30_I2S_TX_STEP_MASK_US << TEGRA30_I2S_TX_STEP_SHIFT)
/* Fields in TEGRA30_I2S_FLOW_STATUS */
#define TEGRA30_I2S_FLOW_STATUS_UNDERFLOW (1 << 31)
#define TEGRA30_I2S_FLOW_STATUS_OVERFLOW (1 << 30)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_INT_EN (1 << 4)
#define TEGRA30_I2S_FLOW_STATUS_COUNTER_CLR (1 << 3)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_CLR (1 << 2)
#define TEGRA30_I2S_FLOW_STATUS_COUNTER_EN (1 << 1)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_EN (1 << 0)
/*
* There are no fields in TEGRA30_I2S_FLOW_TOTAL, TEGRA30_I2S_FLOW_OVER,
* TEGRA30_I2S_FLOW_UNDER; they are counters taking the whole register.
*/
/* Fields in TEGRA30_I2S_LCOEF_* */
#define TEGRA30_I2S_LCOEF_COEF_SHIFT 0
#define TEGRA30_I2S_LCOEF_COEF_MASK_US 0xffff
#define TEGRA30_I2S_LCOEF_COEF_MASK (TEGRA30_I2S_LCOEF_COEF_MASK_US << TEGRA30_I2S_LCOEF_COEF_SHIFT)
struct tegra30_i2s {
struct snd_soc_dai_driver dai;
int cif_id;
struct clk *clk_i2s;
enum tegra30_ahub_txcif capture_i2s_cif;
enum tegra30_ahub_rxcif capture_fifo_cif;
struct tegra_pcm_dma_params capture_dma_data;
enum tegra30_ahub_rxcif playback_i2s_cif;
enum tegra30_ahub_txcif playback_fifo_cif;
struct tegra_pcm_dma_params playback_dma_data;
struct regmap *regmap;
u32 reg_ctrl;
};
#endif