Commit 283b6124 authored by Garlic Tseng's avatar Garlic Tseng Committed by Mark Brown
Browse files

ASoC: mediatek: implement mediatek common structure



implement mediatek basic structure, include common private data,
afe fe dai operator and afe platform driver.
Signed-off-by: default avatarGarlic Tseng <garlic.tseng@mediatek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0d1d7a66
/*
* mtk-afe-fe-dais.c -- Mediatek afe fe dai operator
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "mtk-afe-fe-dai.h"
#include "mtk-base-afe.h"
#define AFE_BASE_END_OFFSET 8
int mtk_regmap_update_bits(struct regmap *map, int reg, unsigned int mask,
unsigned int val)
{
if (reg < 0)
return 0;
return regmap_update_bits(map, reg, mask, val);
}
int mtk_regmap_write(struct regmap *map, int reg, unsigned int val)
{
if (reg < 0)
return 0;
return regmap_write(map, reg, val);
}
int mtk_afe_fe_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct snd_pcm_runtime *runtime = substream->runtime;
int memif_num = rtd->cpu_dai->id;
struct mtk_base_afe_memif *memif = &afe->memif[memif_num];
const struct snd_pcm_hardware *mtk_afe_hardware = afe->mtk_afe_hardware;
int ret;
memif->substream = substream;
snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 16);
/* enable agent */
mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
1 << memif->data->agent_disable_shift,
0 << memif->data->agent_disable_shift);
snd_soc_set_runtime_hwparams(substream, mtk_afe_hardware);
/*
* Capture cannot use ping-pong buffer since hw_ptr at IRQ may be
* smaller than period_size due to AFE's internal buffer.
* This easily leads to overrun when avail_min is period_size.
* One more period can hold the possible unread buffer.
*/
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
int periods_max = mtk_afe_hardware->periods_max;
ret = snd_pcm_hw_constraint_minmax(runtime,
SNDRV_PCM_HW_PARAM_PERIODS,
3, periods_max);
if (ret < 0) {
dev_err(afe->dev, "hw_constraint_minmax failed\n");
return ret;
}
}
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0)
dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n");
/* dynamic allocate irq to memif */
if (memif->irq_usage < 0) {
int irq_id = mtk_dynamic_irq_acquire(afe);
if (irq_id != afe->irqs_size) {
/* link */
memif->irq_usage = irq_id;
} else {
dev_err(afe->dev, "%s() error: no more asys irq\n",
__func__);
ret = -EBUSY;
}
}
return ret;
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_startup);
void mtk_afe_fe_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
int irq_id;
irq_id = memif->irq_usage;
mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
1 << memif->data->agent_disable_shift,
1 << memif->data->agent_disable_shift);
if (!memif->const_irq) {
mtk_dynamic_irq_release(afe, irq_id);
memif->irq_usage = -1;
memif->substream = NULL;
}
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_shutdown);
int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
int msb_at_bit33 = 0;
int ret, fs = 0;
ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
if (ret < 0)
return ret;
msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0;
memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr);
memif->buffer_size = substream->runtime->dma_bytes;
/* start */
mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base,
memif->phys_buf_addr);
/* end */
mtk_regmap_write(afe->regmap,
memif->data->reg_ofs_base + AFE_BASE_END_OFFSET,
memif->phys_buf_addr + memif->buffer_size - 1);
/* set MSB to 33-bit */
mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg,
1 << memif->data->msb_shift,
msb_at_bit33 << memif->data->msb_shift);
/* set channel */
if (memif->data->mono_shift >= 0) {
unsigned int mono = (params_channels(params) == 1) ? 1 : 0;
mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg,
1 << memif->data->mono_shift,
mono << memif->data->mono_shift);
}
/* set rate */
if (memif->data->fs_shift < 0)
return 0;
fs = afe->memif_fs(substream, params_rate(params));
if (fs < 0)
return -EINVAL;
mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg,
memif->data->fs_maskbit << memif->data->fs_shift,
fs << memif->data->fs_shift);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_params);
int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
return snd_pcm_lib_free_pages(substream);
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_free);
int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_pcm_runtime * const runtime = substream->runtime;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
struct mtk_base_afe_irq *irqs = &afe->irqs[memif->irq_usage];
const struct mtk_base_irq_data *irq_data = irqs->irq_data;
unsigned int counter = runtime->period_size;
int fs;
dev_dbg(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
if (memif->data->enable_shift >= 0)
mtk_regmap_update_bits(afe->regmap,
memif->data->enable_reg,
1 << memif->data->enable_shift,
1 << memif->data->enable_shift);
/* set irq counter */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg,
irq_data->irq_cnt_maskbit
<< irq_data->irq_cnt_shift,
counter << irq_data->irq_cnt_shift);
/* set irq fs */
fs = afe->irq_fs(substream, runtime->rate);
if (fs < 0)
return -EINVAL;
mtk_regmap_update_bits(afe->regmap, irq_data->irq_fs_reg,
irq_data->irq_fs_maskbit
<< irq_data->irq_fs_shift,
fs << irq_data->irq_fs_shift);
/* enable interrupt */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
1 << irq_data->irq_en_shift,
1 << irq_data->irq_en_shift);
return 0;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
1 << memif->data->enable_shift, 0);
/* disable interrupt */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
1 << irq_data->irq_en_shift,
0 << irq_data->irq_en_shift);
/* and clear pending IRQ */
mtk_regmap_write(afe->regmap, irq_data->irq_clr_reg,
1 << irq_data->irq_clr_shift);
return 0;
default:
return -EINVAL;
}
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_trigger);
int mtk_afe_fe_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
int hd_audio = 0;
/* set hd mode */
switch (substream->runtime->format) {
case SNDRV_PCM_FORMAT_S16_LE:
hd_audio = 0;
break;
case SNDRV_PCM_FORMAT_S32_LE:
hd_audio = 1;
break;
case SNDRV_PCM_FORMAT_S24_LE:
hd_audio = 1;
break;
default:
dev_err(afe->dev, "%s() error: unsupported format %d\n",
__func__, substream->runtime->format);
break;
}
mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg,
1 << memif->data->hd_shift,
hd_audio << memif->data->hd_shift);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_afe_fe_prepare);
const struct snd_soc_dai_ops mtk_afe_fe_ops = {
.startup = mtk_afe_fe_startup,
.shutdown = mtk_afe_fe_shutdown,
.hw_params = mtk_afe_fe_hw_params,
.hw_free = mtk_afe_fe_hw_free,
.prepare = mtk_afe_fe_prepare,
.trigger = mtk_afe_fe_trigger,
};
EXPORT_SYMBOL_GPL(mtk_afe_fe_ops);
static DEFINE_MUTEX(irqs_lock);
int mtk_dynamic_irq_acquire(struct mtk_base_afe *afe)
{
int i;
mutex_lock(&afe->irq_alloc_lock);
for (i = 0; i < afe->irqs_size; ++i) {
if (afe->irqs[i].irq_occupyed == 0) {
afe->irqs[i].irq_occupyed = 1;
mutex_unlock(&afe->irq_alloc_lock);
return i;
}
}
mutex_unlock(&afe->irq_alloc_lock);
return afe->irqs_size;
}
EXPORT_SYMBOL_GPL(mtk_dynamic_irq_acquire);
int mtk_dynamic_irq_release(struct mtk_base_afe *afe, int irq_id)
{
mutex_lock(&afe->irq_alloc_lock);
if (irq_id >= 0 && irq_id < afe->irqs_size) {
afe->irqs[irq_id].irq_occupyed = 0;
mutex_unlock(&afe->irq_alloc_lock);
return 0;
}
mutex_unlock(&afe->irq_alloc_lock);
return -EINVAL;
}
EXPORT_SYMBOL_GPL(mtk_dynamic_irq_release);
int mtk_afe_dai_suspend(struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
struct device *dev = afe->dev;
struct regmap *regmap = afe->regmap;
int i;
if (pm_runtime_status_suspended(dev) || afe->suspended)
return 0;
if (!afe->reg_back_up)
afe->reg_back_up =
devm_kcalloc(dev, afe->reg_back_up_list_num,
sizeof(unsigned int), GFP_KERNEL);
for (i = 0; i < afe->reg_back_up_list_num; i++)
regmap_read(regmap, afe->reg_back_up_list[i],
&afe->reg_back_up[i]);
afe->suspended = true;
afe->runtime_suspend(dev);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_afe_dai_suspend);
int mtk_afe_dai_resume(struct snd_soc_dai *dai)
{
struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
struct device *dev = afe->dev;
struct regmap *regmap = afe->regmap;
int i = 0;
if (pm_runtime_status_suspended(dev) || !afe->suspended)
return 0;
afe->runtime_resume(dev);
if (!afe->reg_back_up)
dev_dbg(dev, "%s no reg_backup\n", __func__);
for (i = 0; i < afe->reg_back_up_list_num; i++)
mtk_regmap_write(regmap, afe->reg_back_up_list[i],
afe->reg_back_up[i]);
afe->suspended = false;
return 0;
}
EXPORT_SYMBOL_GPL(mtk_afe_dai_resume);
MODULE_DESCRIPTION("Mediatek simple fe dai operator");
MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>");
MODULE_LICENSE("GPL v2");
/*
* mtk-afe-fe-dais.h -- Mediatek afe fe dai operator definition
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#ifndef _MTK_AFE_FE_DAI_H_
#define _MTK_AFE_FE_DAI_H_
struct snd_soc_dai_ops;
struct mtk_base_afe;
struct mtk_base_afe_memif;
int mtk_afe_fe_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai);
void mtk_afe_fe_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai);
int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai);
int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai);
int mtk_afe_fe_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai);
int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai);
extern const struct snd_soc_dai_ops mtk_afe_fe_ops;
int mtk_dynamic_irq_acquire(struct mtk_base_afe *afe);
int mtk_dynamic_irq_release(struct mtk_base_afe *afe, int irq_id);
int mtk_afe_dai_suspend(struct snd_soc_dai *dai);
int mtk_afe_dai_resume(struct snd_soc_dai *dai);
#endif
/*
* mtk-afe-platform-driver.c -- Mediatek afe platform driver
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <sound/soc.h>
#include "mtk-afe-platform-driver.h"
#include "mtk-base-afe.h"
static snd_pcm_uframes_t mtk_afe_pcm_pointer
(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
const struct mtk_base_memif_data *memif_data = memif->data;
struct regmap *regmap = afe->regmap;
struct device *dev = afe->dev;
int reg_ofs_base = memif_data->reg_ofs_base;
int reg_ofs_cur = memif_data->reg_ofs_cur;
unsigned int hw_ptr = 0, hw_base = 0;
int ret, pcm_ptr_bytes;
ret = regmap_read(regmap, reg_ofs_cur, &hw_ptr);
if (ret || hw_ptr == 0) {
dev_err(dev, "%s hw_ptr err\n", __func__);
pcm_ptr_bytes = 0;
goto POINTER_RETURN_FRAMES;
}
ret = regmap_read(regmap, reg_ofs_base, &hw_base);
if (ret || hw_base == 0) {
dev_err(dev, "%s hw_ptr err\n", __func__);
pcm_ptr_bytes = 0;
goto POINTER_RETURN_FRAMES;
}
pcm_ptr_bytes = hw_ptr - hw_base;
POINTER_RETURN_FRAMES:
return bytes_to_frames(substream->runtime, pcm_ptr_bytes);
}
static const struct snd_pcm_ops mtk_afe_pcm_ops = {
.ioctl = snd_pcm_lib_ioctl,
.pointer = mtk_afe_pcm_pointer,
};
static int mtk_afe_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
size_t size;
struct snd_card *card = rtd->card->snd_card;
struct snd_pcm *pcm = rtd->pcm;
struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
size = afe->mtk_afe_hardware->buffer_bytes_max;
return snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
card->dev, size, size);
}
static void mtk_afe_pcm_free(struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_free_for_all(pcm);
}
const struct snd_soc_platform_driver mtk_afe_pcm_platform = {
.ops = &mtk_afe_pcm_ops,
.pcm_new = mtk_afe_pcm_new,
.pcm_free = mtk_afe_pcm_free,
};
EXPORT_SYMBOL_GPL(mtk_afe_pcm_platform);
MODULE_DESCRIPTION("Mediatek simple platform driver");
MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>");
MODULE_LICENSE("GPL v2");
/*
* mtk-afe-platform-driver.h -- Mediatek afe platform driver definition
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#ifndef _MTK_AFE_PLATFORM_DRIVER_H_
#define _MTK_AFE_PLATFORM_DRIVER_H_
extern const struct snd_soc_platform_driver mtk_afe_pcm_platform;
#endif
/*
* mtk-base-afe.h -- Mediatek base afe structure
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <garlic.tseng@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only 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.
*/
#ifndef _MTK_BASE_AFE_H_
#define _MTK_BASE_AFE_H_
struct mtk_base_memif_data {
int id;
const char *name;
int reg_ofs_base;
int reg_ofs_cur;
int fs_reg;
int fs_shift;
int fs_maskbit;
int mono_reg;
int mono_shift;
int enable_reg;
int enable_shift;
int hd_reg;
int hd_shift;
int msb_reg;
int msb_shift;
int agent_disable_reg;
int agent_disable_shift;
};
struct mtk_base_irq_data {
int id;
int irq_cnt_reg;
int irq_cnt_shift;
int irq_cnt_maskbit;
int irq_fs_reg;
int irq_fs_shift;
int irq_fs_maskbit;
int irq_en_reg;
int irq_en_shift;
int irq_clr_reg;
int irq_clr_shift;
};
struct device;
struct mtk_base_afe_memif;
struct mtk_base_afe_irq;
struct regmap;
struct snd_pcm_substream;
struct snd_soc_dai;
struct mtk_base_afe {
void __iomem *base_addr;
struct device *dev;
struct regmap *regmap;
struct mutex irq_alloc_lock; /* dynamic alloc irq lock */
unsigned int const *reg_back_up_list;