// SPDX-License-Identifier: GPL-2.0
/*
* mtk-afe-fe-dais.c -- Mediatek afe fe dai operator
*
* Copyright (c) 2016 MediaTek Inc.
* Author: Garlic Tseng <[email protected]>
*/
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include "mtk-afe-platform-driver.h"
#include <sound/pcm_params.h>
#include "mtk-afe-fe-dai.h"
#include "mtk-base-afe.h"
#define AFE_BASE_END_OFFSET 8
static int mtk_regmap_update_bits(struct regmap *map, int reg,
unsigned int mask,
unsigned int val, int shift)
{
if (reg < 0 || WARN_ON_ONCE(shift < 0))
return 0;
return regmap_update_bits(map, reg, mask << shift, val << shift);
}
static 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 = snd_soc_substream_to_rtd(substream);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct snd_pcm_runtime *runtime = substream->runtime;
int memif_num = snd_soc_rtd_to_cpu(rtd, 0)->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, 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 = snd_soc_substream_to_rtd(substream);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
struct mtk_base_afe_memif *memif = &afe->memif[snd_soc_rtd_to_cpu(rtd, 0)->id];
int irq_id;
irq_id = memif->irq_usage;
mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
1, 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 = snd_soc_substream_to_rtd(substream);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
struct mtk_base_afe_memif *memif = &afe->memif[id];
int ret;
unsigned int channels = params_channels(params);
unsigned int rate = params_rate(params);
snd_pcm_format_t format = params_format(params);
if (afe->request_dram_resource)
afe->request_dram_resource(afe->dev);
dev_dbg(afe->dev, "%s(), %s, ch %d, rate %d, fmt %d, dma_addr %pad, dma_area %p, dma_bytes 0x%zx\n",
__func__, memif->data->name,
channels, rate, format,
&substream->runtime->dma_addr,
substream->runtime->dma_area,
substream->runtime->dma_bytes);
memset_io((void __force __iomem *)substream->runtime->dma_area, 0,
substream->runtime->dma_bytes);
/* set addr */
ret = mtk_memif_set_addr(afe, id,
substream->runtime->dma_area,
substream->runtime->dma_addr,
substream->runtime->dma_bytes);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, set addr, ret %d\n",
__func__, id, ret);
return ret;
}
/* set channel */
ret = mtk_memif_set_channel(afe, id, channels);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, set channel %d, ret %d\n",
__func__, id, channels, ret);
return ret;
}
/* set rate */
ret = mtk_memif_set_rate_substream(substream, id, rate);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, set rate %d, ret %d\n",
__func__, id, rate, ret);
return ret;
}
/* set format */
ret = mtk_memif_set_format(afe, id, format);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, set format %d, ret %d\n",
__func__, id, format, ret);
return ret;
}
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)
{
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
if (afe->release_dram_resource)
afe->release_dram_resource(afe->dev);
return 0;
}
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 = snd_soc_substream_to_rtd(substream);
struct snd_pcm_runtime * const runtime = substream->runtime;
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
struct mtk_base_afe_memif *memif = &afe->memif[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;
int ret;
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:
ret = mtk_memif_set_enable(afe, id);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
__func__, id, ret);
return ret;
}
/* set irq counter */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg,
irq_data->irq_cnt_maskbit, 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, fs,
irq_data->irq_fs_shift);
/* enable interrupt */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
1, 1, irq_data->irq_en_shift);
return 0;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
ret = mtk_memif_set_disable(afe, id);
if (ret) {
dev_err(afe->dev, "%s(), error, id %d, memif enable, ret %d\n",
__func__, id, ret);
}
/* disable interrupt */
mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
1, 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 ret;
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 = snd_soc_substream_to_rtd(substream);
struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
int pbuf_size;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (afe->get_memif_pbuf_size) {
pbuf_size = afe->get_memif_pbuf_size(substream);
mtk_memif_set_pbuf_size(afe, id, pbuf_size);
}
}
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);
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_suspend(struct snd_soc_component *component)
{
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
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);
if (afe->reg_back_up) {
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_suspend);
int mtk_afe_resume(struct snd_soc_component *component)
{
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
struct device *dev = afe->dev;
struct regmap *regmap = afe->regmap;
int i;
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__);
} else {
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_resume);
int mtk_memif_set_enable(struct mtk_base_afe *afe, int id)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
if (memif->data->enable_shift < 0) {
dev_warn(afe->dev, "%s(), error, id %d, enable_shift < 0\n",
__func__, id);
return 0;
}
return mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
1, 1, memif->data->enable_shift);
}
EXPORT_SYMBOL_GPL(mtk_memif_set_enable);
int mtk_memif_set_disable(struct mtk_base_afe *afe, int id)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
if (memif->data->enable_shift < 0) {
dev_warn(afe->dev, "%s(), error, id %d, enable_shift < 0\n",
__func__, id);
return 0;
}
return mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
1, 0, memif->data->enable_shift);
}
EXPORT_SYMBOL_GPL(mtk_memif_set_disable);
int mtk_memif_set_addr(struct mtk_base_afe *afe, int id,
unsigned char *dma_area,
dma_addr_t dma_addr,
size_t dma_bytes)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
int msb_at_bit33 = upper_32_bits(dma_addr) ? 1 : 0;
unsigned int phys_buf_addr = lower_32_bits(dma_addr);
unsigned int phys_buf_addr_upper_32 = upper_32_bits(dma_addr);
memif->dma_area = dma_area;
memif->dma_addr = dma_addr;
memif->dma_bytes = dma_bytes;
/* start */
mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base,
phys_buf_addr);
/* end */
if (memif->data->reg_ofs_end)
mtk_regmap_write(afe->regmap,
memif->data->reg_ofs_end,
phys_buf_addr + dma_bytes - 1);
else
mtk_regmap_write(afe->regmap,
memif->data->reg_ofs_base +
AFE_BASE_END_OFFSET,
phys_buf_addr + dma_bytes - 1);
/* set start, end, upper 32 bits */
if (memif->data->reg_ofs_base_msb) {
mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base_msb,
phys_buf_addr_upper_32);
mtk_regmap_write(afe->regmap,
memif->data->reg_ofs_end_msb,
phys_buf_addr_upper_32);
}
/*
* set MSB to 33-bit, for memif address
* only for memif base address, if msb_end_reg exists
*/
if (memif->data->msb_reg)
mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg,
1, msb_at_bit33, memif->data->msb_shift);
/* set MSB to 33-bit, for memif end address */
if (memif->data->msb_end_reg)
mtk_regmap_update_bits(afe->regmap, memif->data->msb_end_reg,
1, msb_at_bit33,
memif->data->msb_end_shift);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_memif_set_addr);
int mtk_memif_set_channel(struct mtk_base_afe *afe,
int id, unsigned int channel)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
unsigned int mono;
if (memif->data->mono_shift < 0)
return 0;
if (memif->data->quad_ch_mask) {
unsigned int quad_ch = (channel == 4) ? 1 : 0;
mtk_regmap_update_bits(afe->regmap, memif->data->quad_ch_reg,
memif->data->quad_ch_mask,
quad_ch, memif->data->quad_ch_shift);
}
if (memif->data->mono_invert)
mono = (channel == 1) ? 0 : 1;
else
mono = (channel == 1) ? 1 : 0;
/* for specific configuration of memif mono mode */
if (memif->data->int_odd_flag_reg)
mtk_regmap_update_bits(afe->regmap,
memif->data->int_odd_flag_reg,
1, mono,
memif->data->int_odd_flag_shift);
return mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg,
1, mono, memif->data->mono_shift);
}
EXPORT_SYMBOL_GPL(mtk_memif_set_channel);
static int mtk_memif_set_rate_fs(struct mtk_base_afe *afe,
int id, int fs)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
if (memif->data->fs_shift >= 0)
mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg,
memif->data->fs_maskbit,
fs, memif->data->fs_shift);
return 0;
}
int mtk_memif_set_rate(struct mtk_base_afe *afe,
int id, unsigned int rate)
{
int fs = 0;
if (!afe->get_dai_fs) {
dev_err(afe->dev, "%s(), error, afe->get_dai_fs == NULL\n",
__func__);
return -EINVAL;
}
fs = afe->get_dai_fs(afe, id, rate);
if (fs < 0)
return -EINVAL;
return mtk_memif_set_rate_fs(afe, id, fs);
}
EXPORT_SYMBOL_GPL(mtk_memif_set_rate);
int mtk_memif_set_rate_substream(struct snd_pcm_substream *substream,
int id, unsigned int rate)
{
struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
int fs = 0;
if (!afe->memif_fs) {
dev_err(afe->dev, "%s(), error, afe->memif_fs == NULL\n",
__func__);
return -EINVAL;
}
fs = afe->memif_fs(substream, rate);
if (fs < 0)
return -EINVAL;
return mtk_memif_set_rate_fs(afe, id, fs);
}
EXPORT_SYMBOL_GPL(mtk_memif_set_rate_substream);
int mtk_memif_set_format(struct mtk_base_afe *afe,
int id, snd_pcm_format_t format)
{
struct mtk_base_afe_memif *memif = &afe->memif[id];
int hd_audio = 0;
int hd_align = 0;
/* set hd mode */
switch (format) {
case SNDRV_PCM_FORMAT_S16_LE:
case SNDRV_PCM_FORMAT_U16_LE:
hd_audio = 0;
break;
case SNDRV_PCM_FORMAT_S32_LE:
case SNDRV_PCM_FORMAT_U32_LE:
if (afe->memif_32bit_supported) {
hd_audio = 2;
hd_align = 0;
} else {
hd_audio = 1;
hd_align = 1;
}
break;
case SNDRV_PCM_FORMAT_S24_LE:
case SNDRV_PCM_FORMAT_U24_LE:
hd_audio = 1;
break;
default:
dev_err(afe->dev, "%s() error: unsupported format %d\n",
__func__, format);
break;
}
mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg,
0x3, hd_audio, memif->data->hd_shift);
mtk_regmap_update_bits(afe->regmap, memif->data->hd_align_reg,
0x1, hd_align, memif->data->hd_align_mshift);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_memif_set_format);
int mtk_memif_set_pbuf_size(struct mtk_base_afe *afe,
int id, int pbuf_size)
{
const struct mtk_base_memif_data *memif_data = afe->memif[id].data;
if (memif_data->pbuf_mask == 0 || memif_data->minlen_mask == 0)
return 0;
mtk_regmap_update_bits(afe->regmap, memif_data->pbuf_reg,
memif_data->pbuf_mask,
pbuf_size, memif_data->pbuf_shift);
mtk_regmap_update_bits(afe->regmap, memif_data->minlen_reg,
memif_data->minlen_mask,
pbuf_size, memif_data->minlen_shift);
return 0;
}
EXPORT_SYMBOL_GPL(mtk_memif_set_pbuf_size);
MODULE_DESCRIPTION("Mediatek simple fe dai operator");
MODULE_AUTHOR("Garlic Tseng <[email protected]>");
MODULE_LICENSE("GPL v2");
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