// SPDX-License-Identifier: GPL-2.0
// Copyright 2018 NXP
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/kobject.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/sysfs.h>
#include <linux/types.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/core.h>
#include "fsl_micfil.h"
#include "imx-pcm.h"
#define FSL_MICFIL_RATES SNDRV_PCM_RATE_8000_48000
#define FSL_MICFIL_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
struct fsl_micfil {
struct platform_device *pdev;
struct regmap *regmap;
const struct fsl_micfil_soc_data *soc;
struct clk *mclk;
struct snd_dmaengine_dai_dma_data dma_params_rx;
unsigned int dataline;
char name[32];
int irq[MICFIL_IRQ_LINES];
unsigned int mclk_streams;
int quality; /*QUALITY 2-0 bits */
bool slave_mode;
int channel_gain[8];
};
struct fsl_micfil_soc_data {
unsigned int fifos;
unsigned int fifo_depth;
unsigned int dataline;
bool imx;
};
static struct fsl_micfil_soc_data fsl_micfil_imx8mm = {
.imx = true,
.fifos = 8,
.fifo_depth = 8,
.dataline = 0xf,
};
static const struct of_device_id fsl_micfil_dt_ids[] = {
{ .compatible = "fsl,imx8mm-micfil", .data = &fsl_micfil_imx8mm },
{}
};
MODULE_DEVICE_TABLE(of, fsl_micfil_dt_ids);
/* Table 5. Quality Modes
* Medium 0 0 0
* High 0 0 1
* Very Low 2 1 0 0
* Very Low 1 1 0 1
* Very Low 0 1 1 0
* Low 1 1 1
*/
static const char * const micfil_quality_select_texts[] = {
"Medium", "High",
"N/A", "N/A",
"VLow2", "VLow1",
"VLow0", "Low",
};
static const struct soc_enum fsl_micfil_quality_enum =
SOC_ENUM_SINGLE(REG_MICFIL_CTRL2,
MICFIL_CTRL2_QSEL_SHIFT,
ARRAY_SIZE(micfil_quality_select_texts),
micfil_quality_select_texts);
static DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0);
static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
SOC_SINGLE_SX_TLV("CH0 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(0), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH1 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(1), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH2 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(2), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH3 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(3), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH4 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(4), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH5 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(5), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH6 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(6), 0xF, 0x7, gain_tlv),
SOC_SINGLE_SX_TLV("CH7 Volume", REG_MICFIL_OUT_CTRL,
MICFIL_OUTGAIN_CHX_SHIFT(7), 0xF, 0x7, gain_tlv),
SOC_ENUM_EXT("MICFIL Quality Select",
fsl_micfil_quality_enum,
snd_soc_get_enum_double, snd_soc_put_enum_double),
};
static inline int get_pdm_clk(struct fsl_micfil *micfil,
unsigned int rate)
{
u32 ctrl2_reg;
int qsel, osr;
int bclk;
regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK)
>> MICFIL_CTRL2_CICOSR_SHIFT);
regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
qsel = ctrl2_reg & MICFIL_CTRL2_QSEL_MASK;
switch (qsel) {
case MICFIL_HIGH_QUALITY:
bclk = rate * 8 * osr / 2; /* kfactor = 0.5 */
break;
case MICFIL_MEDIUM_QUALITY:
case MICFIL_VLOW0_QUALITY:
bclk = rate * 4 * osr * 1; /* kfactor = 1 */
break;
case MICFIL_LOW_QUALITY:
case MICFIL_VLOW1_QUALITY:
bclk = rate * 2 * osr * 2; /* kfactor = 2 */
break;
case MICFIL_VLOW2_QUALITY:
bclk = rate * osr * 4; /* kfactor = 4 */
break;
default:
dev_err(&micfil->pdev->dev,
"Please make sure you select a valid quality.\n");
bclk = -1;
break;
}
return bclk;
}
static inline int get_clk_div(struct fsl_micfil *micfil,
unsigned int rate)
{
u32 ctrl2_reg;
long mclk_rate;
int clk_div;
regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
mclk_rate = clk_get_rate(micfil->mclk);
clk_div = mclk_rate / (get_pdm_clk(micfil, rate) * 2);
return clk_div;
}
/* The SRES is a self-negated bit which provides the CPU with the
* capability to initialize the PDM Interface module through the
* slave-bus interface. This bit always reads as zero, and this
* bit is only effective when MDIS is cleared
*/
static int fsl_micfil_reset(struct device *dev)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
int ret;
ret = regmap_update_bits(micfil->regmap,
REG_MICFIL_CTRL1,
MICFIL_CTRL1_MDIS_MASK,
0);
if (ret) {
dev_err(dev, "failed to clear MDIS bit %d\n", ret);
return ret;
}
ret = regmap_update_bits(micfil->regmap,
REG_MICFIL_CTRL1,
MICFIL_CTRL1_SRES_MASK,
MICFIL_CTRL1_SRES);
if (ret) {
dev_err(dev, "failed to reset MICFIL: %d\n", ret);
return ret;
}
return 0;
}
static int fsl_micfil_set_mclk_rate(struct fsl_micfil *micfil,
unsigned int freq)
{
struct device *dev = &micfil->pdev->dev;
int ret;
clk_disable_unprepare(micfil->mclk);
ret = clk_set_rate(micfil->mclk, freq * 1024);
if (ret)
dev_warn(dev, "failed to set rate (%u): %d\n",
freq * 1024, ret);
clk_prepare_enable(micfil->mclk);
return ret;
}
static int fsl_micfil_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
if (!micfil) {
dev_err(dai->dev,
"micfil dai priv_data not set\n");
return -EINVAL;
}
return 0;
}
static int fsl_micfil_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
struct device *dev = &micfil->pdev->dev;
int ret;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
ret = fsl_micfil_reset(dev);
if (ret) {
dev_err(dev, "failed to soft reset\n");
return ret;
}
/* DMA Interrupt Selection - DISEL bits
* 00 - DMA and IRQ disabled
* 01 - DMA req enabled
* 10 - IRQ enabled
* 11 - reserved
*/
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
MICFIL_CTRL1_DISEL_MASK,
(1 << MICFIL_CTRL1_DISEL_SHIFT));
if (ret) {
dev_err(dev, "failed to update DISEL bits\n");
return ret;
}
/* Enable the module */
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
MICFIL_CTRL1_PDMIEN_MASK,
MICFIL_CTRL1_PDMIEN);
if (ret) {
dev_err(dev, "failed to enable the module\n");
return ret;
}
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
/* Disable the module */
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
MICFIL_CTRL1_PDMIEN_MASK,
0);
if (ret) {
dev_err(dev, "failed to enable the module\n");
return ret;
}
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
MICFIL_CTRL1_DISEL_MASK,
(0 << MICFIL_CTRL1_DISEL_SHIFT));
if (ret) {
dev_err(dev, "failed to update DISEL bits\n");
return ret;
}
break;
default:
return -EINVAL;
}
return 0;
}
static int fsl_set_clock_params(struct device *dev, unsigned int rate)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
int clk_div;
int ret = 0;
ret = fsl_micfil_set_mclk_rate(micfil, rate);
if (ret < 0)
dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
clk_get_rate(micfil->mclk), rate);
/* set CICOSR */
ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
MICFIL_CTRL2_CICOSR_MASK,
MICFIL_CTRL2_OSR_DEFAULT);
if (ret)
dev_err(dev, "failed to set CICOSR in reg 0x%X\n",
REG_MICFIL_CTRL2);
/* set CLK_DIV */
clk_div = get_clk_div(micfil, rate);
if (clk_div < 0)
ret = -EINVAL;
ret |= regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
MICFIL_CTRL2_CLKDIV_MASK, clk_div);
if (ret)
dev_err(dev, "failed to set CLKDIV in reg 0x%X\n",
REG_MICFIL_CTRL2);
return ret;
}
static int fsl_micfil_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
unsigned int channels = params_channels(params);
unsigned int rate = params_rate(params);
struct device *dev = &micfil->pdev->dev;
int ret;
/* 1. Disable the module */
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
MICFIL_CTRL1_PDMIEN_MASK, 0);
if (ret) {
dev_err(dev, "failed to disable the module\n");
return ret;
}
/* enable channels */
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL1,
0xFF, ((1 << channels) - 1));
if (ret) {
dev_err(dev, "failed to enable channels %d, reg 0x%X\n", ret,
REG_MICFIL_CTRL1);
return ret;
}
ret = fsl_set_clock_params(dev, rate);
if (ret < 0) {
dev_err(dev, "Failed to set clock parameters [%d]\n", ret);
return ret;
}
micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;
return 0;
}
static int fsl_micfil_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct fsl_micfil *micfil = snd_soc_dai_get_drvdata(dai);
struct device *dev = &micfil->pdev->dev;
int ret;
if (!freq)
return 0;
ret = fsl_micfil_set_mclk_rate(micfil, freq);
if (ret < 0)
dev_err(dev, "failed to set mclk[%lu] to rate %u\n",
clk_get_rate(micfil->mclk), freq);
return ret;
}
static struct snd_soc_dai_ops fsl_micfil_dai_ops = {
.startup = fsl_micfil_startup,
.trigger = fsl_micfil_trigger,
.hw_params = fsl_micfil_hw_params,
.set_sysclk = fsl_micfil_set_dai_sysclk,
};
static int fsl_micfil_dai_probe(struct snd_soc_dai *cpu_dai)
{
struct fsl_micfil *micfil = dev_get_drvdata(cpu_dai->dev);
struct device *dev = cpu_dai->dev;
unsigned int val;
int ret;
int i;
/* set qsel to medium */
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
MICFIL_CTRL2_QSEL_MASK, MICFIL_MEDIUM_QUALITY);
if (ret) {
dev_err(dev, "failed to set quality mode bits, reg 0x%X\n",
REG_MICFIL_CTRL2);
return ret;
}
/* set default gain to max_gain */
regmap_write(micfil->regmap, REG_MICFIL_OUT_CTRL, 0x77777777);
for (i = 0; i < 8; i++)
micfil->channel_gain[i] = 0xF;
snd_soc_dai_init_dma_data(cpu_dai, NULL,
&micfil->dma_params_rx);
/* FIFO Watermark Control - FIFOWMK*/
val = MICFIL_FIFO_CTRL_FIFOWMK(micfil->soc->fifo_depth) - 1;
ret = regmap_update_bits(micfil->regmap, REG_MICFIL_FIFO_CTRL,
MICFIL_FIFO_CTRL_FIFOWMK_MASK,
val);
if (ret) {
dev_err(dev, "failed to set FIFOWMK\n");
return ret;
}
snd_soc_dai_set_drvdata(cpu_dai, micfil);
return 0;
}
static struct snd_soc_dai_driver fsl_micfil_dai = {
.probe = fsl_micfil_dai_probe,
.capture = {
.stream_name = "CPU-Capture",
.channels_min = 1,
.channels_max = 8,
.rates = FSL_MICFIL_RATES,
.formats = FSL_MICFIL_FORMATS,
},
.ops = &fsl_micfil_dai_ops,
};
static const struct snd_soc_component_driver fsl_micfil_component = {
.name = "fsl-micfil-dai",
.controls = fsl_micfil_snd_controls,
.num_controls = ARRAY_SIZE(fsl_micfil_snd_controls),
};
/* REGMAP */
static const struct reg_default fsl_micfil_reg_defaults[] = {
{REG_MICFIL_CTRL1, 0x00000000},
{REG_MICFIL_CTRL2, 0x00000000},
{REG_MICFIL_STAT, 0x00000000},
{REG_MICFIL_FIFO_CTRL, 0x00000007},
{REG_MICFIL_FIFO_STAT, 0x00000000},
{REG_MICFIL_DATACH0, 0x00000000},
{REG_MICFIL_DATACH1, 0x00000000},
{REG_MICFIL_DATACH2, 0x00000000},
{REG_MICFIL_DATACH3, 0x00000000},
{REG_MICFIL_DATACH4, 0x00000000},
{REG_MICFIL_DATACH5, 0x00000000},
{REG_MICFIL_DATACH6, 0x00000000},
{REG_MICFIL_DATACH7, 0x00000000},
{REG_MICFIL_DC_CTRL, 0x00000000},
{REG_MICFIL_OUT_CTRL, 0x00000000},
{REG_MICFIL_OUT_STAT, 0x00000000},
{REG_MICFIL_VAD0_CTRL1, 0x00000000},
{REG_MICFIL_VAD0_CTRL2, 0x000A0000},
{REG_MICFIL_VAD0_STAT, 0x00000000},
{REG_MICFIL_VAD0_SCONFIG, 0x00000000},
{REG_MICFIL_VAD0_NCONFIG, 0x80000000},
{REG_MICFIL_VAD0_NDATA, 0x00000000},
{REG_MICFIL_VAD0_ZCD, 0x00000004},
};
static bool fsl_micfil_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case REG_MICFIL_CTRL1:
case REG_MICFIL_CTRL2:
case REG_MICFIL_STAT:
case REG_MICFIL_FIFO_CTRL:
case REG_MICFIL_FIFO_STAT:
case REG_MICFIL_DATACH0:
case REG_MICFIL_DATACH1:
case REG_MICFIL_DATACH2:
case REG_MICFIL_DATACH3:
case REG_MICFIL_DATACH4:
case REG_MICFIL_DATACH5:
case REG_MICFIL_DATACH6:
case REG_MICFIL_DATACH7:
case REG_MICFIL_DC_CTRL:
case REG_MICFIL_OUT_CTRL:
case REG_MICFIL_OUT_STAT:
case REG_MICFIL_VAD0_CTRL1:
case REG_MICFIL_VAD0_CTRL2:
case REG_MICFIL_VAD0_STAT:
case REG_MICFIL_VAD0_SCONFIG:
case REG_MICFIL_VAD0_NCONFIG:
case REG_MICFIL_VAD0_NDATA:
case REG_MICFIL_VAD0_ZCD:
return true;
default:
return false;
}
}
static bool fsl_micfil_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case REG_MICFIL_CTRL1:
case REG_MICFIL_CTRL2:
case REG_MICFIL_STAT: /* Write 1 to Clear */
case REG_MICFIL_FIFO_CTRL:
case REG_MICFIL_FIFO_STAT: /* Write 1 to Clear */
case REG_MICFIL_DC_CTRL:
case REG_MICFIL_OUT_CTRL:
case REG_MICFIL_OUT_STAT: /* Write 1 to Clear */
case REG_MICFIL_VAD0_CTRL1:
case REG_MICFIL_VAD0_CTRL2:
case REG_MICFIL_VAD0_STAT: /* Write 1 to Clear */
case REG_MICFIL_VAD0_SCONFIG:
case REG_MICFIL_VAD0_NCONFIG:
case REG_MICFIL_VAD0_ZCD:
return true;
default:
return false;
}
}
static bool fsl_micfil_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case REG_MICFIL_STAT:
case REG_MICFIL_DATACH0:
case REG_MICFIL_DATACH1:
case REG_MICFIL_DATACH2:
case REG_MICFIL_DATACH3:
case REG_MICFIL_DATACH4:
case REG_MICFIL_DATACH5:
case REG_MICFIL_DATACH6:
case REG_MICFIL_DATACH7:
case REG_MICFIL_VAD0_STAT:
case REG_MICFIL_VAD0_NDATA:
return true;
default:
return false;
}
}
static const struct regmap_config fsl_micfil_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = REG_MICFIL_VAD0_ZCD,
.reg_defaults = fsl_micfil_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(fsl_micfil_reg_defaults),
.readable_reg = fsl_micfil_readable_reg,
.volatile_reg = fsl_micfil_volatile_reg,
.writeable_reg = fsl_micfil_writeable_reg,
.cache_type = REGCACHE_RBTREE,
};
/* END OF REGMAP */
static irqreturn_t micfil_isr(int irq, void *devid)
{
struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
struct platform_device *pdev = micfil->pdev;
u32 stat_reg;
u32 fifo_stat_reg;
u32 ctrl1_reg;
bool dma_enabled;
int i;
regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
regmap_read(micfil->regmap, REG_MICFIL_CTRL1, &ctrl1_reg);
regmap_read(micfil->regmap, REG_MICFIL_FIFO_STAT, &fifo_stat_reg);
dma_enabled = MICFIL_DMA_ENABLED(ctrl1_reg);
/* Channel 0-7 Output Data Flags */
for (i = 0; i < MICFIL_OUTPUT_CHANNELS; i++) {
if (stat_reg & MICFIL_STAT_CHXF_MASK(i))
dev_dbg(&pdev->dev,
"Data available in Data Channel %d\n", i);
/* if DMA is not enabled, field must be written with 1
* to clear
*/
if (!dma_enabled)
regmap_write_bits(micfil->regmap,
REG_MICFIL_STAT,
MICFIL_STAT_CHXF_MASK(i),
1);
}
for (i = 0; i < MICFIL_FIFO_NUM; i++) {
if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_OVER_MASK(i))
dev_dbg(&pdev->dev,
"FIFO Overflow Exception flag for channel %d\n",
i);
if (fifo_stat_reg & MICFIL_FIFO_STAT_FIFOX_UNDER_MASK(i))
dev_dbg(&pdev->dev,
"FIFO Underflow Exception flag for channel %d\n",
i);
}
return IRQ_HANDLED;
}
static irqreturn_t micfil_err_isr(int irq, void *devid)
{
struct fsl_micfil *micfil = (struct fsl_micfil *)devid;
struct platform_device *pdev = micfil->pdev;
u32 stat_reg;
regmap_read(micfil->regmap, REG_MICFIL_STAT, &stat_reg);
if (stat_reg & MICFIL_STAT_BSY_FIL_MASK)
dev_dbg(&pdev->dev, "isr: Decimation Filter is running\n");
if (stat_reg & MICFIL_STAT_FIR_RDY_MASK)
dev_dbg(&pdev->dev, "isr: FIR Filter Data ready\n");
if (stat_reg & MICFIL_STAT_LOWFREQF_MASK) {
dev_dbg(&pdev->dev, "isr: ipg_clk_app is too low\n");
regmap_write_bits(micfil->regmap, REG_MICFIL_STAT,
MICFIL_STAT_LOWFREQF_MASK, 1);
}
return IRQ_HANDLED;
}
static int fsl_micfil_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
const struct of_device_id *of_id;
struct fsl_micfil *micfil;
struct resource *res;
void __iomem *regs;
int ret, i;
unsigned long irqflag = 0;
micfil = devm_kzalloc(&pdev->dev, sizeof(*micfil), GFP_KERNEL);
if (!micfil)
return -ENOMEM;
micfil->pdev = pdev;
strncpy(micfil->name, np->name, sizeof(micfil->name) - 1);
of_id = of_match_device(fsl_micfil_dt_ids, &pdev->dev);
if (!of_id || !of_id->data)
return -EINVAL;
micfil->soc = of_id->data;
/* ipg_clk is used to control the registers
* ipg_clk_app is used to operate the filter
*/
micfil->mclk = devm_clk_get(&pdev->dev, "ipg_clk_app");
if (IS_ERR(micfil->mclk)) {
dev_err(&pdev->dev, "failed to get core clock: %ld\n",
PTR_ERR(micfil->mclk));
return PTR_ERR(micfil->mclk);
}
/* init regmap */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
micfil->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
"ipg_clk",
regs,
&fsl_micfil_regmap_config);
if (IS_ERR(micfil->regmap)) {
dev_err(&pdev->dev, "failed to init MICFIL regmap: %ld\n",
PTR_ERR(micfil->regmap));
return PTR_ERR(micfil->regmap);
}
/* dataline mask for RX */
ret = of_property_read_u32_index(np,
"fsl,dataline",
0,
&micfil->dataline);
if (ret)
micfil->dataline = 1;
if (micfil->dataline & ~micfil->soc->dataline) {
dev_err(&pdev->dev, "dataline setting error, Mask is 0x%X\n",
micfil->soc->dataline);
return -EINVAL;
}
/* get IRQs */
for (i = 0; i < MICFIL_IRQ_LINES; i++) {
micfil->irq[i] = platform_get_irq(pdev, i);
dev_err(&pdev->dev, "GET IRQ: %d\n", micfil->irq[i]);
if (micfil->irq[i] < 0) {
dev_err(&pdev->dev, "no irq for node %s\n", pdev->name);
return micfil->irq[i];
}
}
if (of_property_read_bool(np, "fsl,shared-interrupt"))
irqflag = IRQF_SHARED;
/* Digital Microphone interface interrupt - IRQ 109 */
ret = devm_request_irq(&pdev->dev, micfil->irq[0],
micfil_isr, irqflag,
micfil->name, micfil);
if (ret) {
dev_err(&pdev->dev, "failed to claim mic interface irq %u\n",
micfil->irq[0]);
return ret;
}
/* Digital Microphone interface error interrupt - IRQ 110 */
ret = devm_request_irq(&pdev->dev, micfil->irq[1],
micfil_err_isr, irqflag,
micfil->name, micfil);
if (ret) {
dev_err(&pdev->dev, "failed to claim mic interface error irq %u\n",
micfil->irq[1]);
return ret;
}
micfil->dma_params_rx.chan_name = "rx";
micfil->dma_params_rx.addr = res->start + REG_MICFIL_DATACH0;
micfil->dma_params_rx.maxburst = MICFIL_DMA_MAXBURST_RX;
platform_set_drvdata(pdev, micfil);
pm_runtime_enable(&pdev->dev);
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_micfil_component,
&fsl_micfil_dai, 1);
if (ret) {
dev_err(&pdev->dev, "failed to register component %s\n",
fsl_micfil_component.name);
return ret;
}
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (ret)
dev_err(&pdev->dev, "failed to pcm register\n");
return ret;
}
#ifdef CONFIG_PM
static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
regcache_cache_only(micfil->regmap, true);
clk_disable_unprepare(micfil->mclk);
return 0;
}
static int __maybe_unused fsl_micfil_runtime_resume(struct device *dev)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(micfil->mclk);
if (ret < 0)
return ret;
regcache_cache_only(micfil->regmap, false);
regcache_mark_dirty(micfil->regmap);
regcache_sync(micfil->regmap);
return 0;
}
#endif /* CONFIG_PM*/
#ifdef CONFIG_PM_SLEEP
static int __maybe_unused fsl_micfil_suspend(struct device *dev)
{
pm_runtime_force_suspend(dev);
return 0;
}
static int __maybe_unused fsl_micfil_resume(struct device *dev)
{
pm_runtime_force_resume(dev);
return 0;
}
#endif /* CONFIG_PM_SLEEP */
static const struct dev_pm_ops fsl_micfil_pm_ops = {
SET_RUNTIME_PM_OPS(fsl_micfil_runtime_suspend,
fsl_micfil_runtime_resume,
NULL)
SET_SYSTEM_SLEEP_PM_OPS(fsl_micfil_suspend,
fsl_micfil_resume)
};
static struct platform_driver fsl_micfil_driver = {
.probe = fsl_micfil_probe,
.driver = {
.name = "fsl-micfil-dai",
.pm = &fsl_micfil_pm_ops,
.of_match_table = fsl_micfil_dt_ids,
},
};
module_platform_driver(fsl_micfil_driver);
MODULE_AUTHOR("Cosmin-Gabriel Samoila <cosmin.samoila@nxp.com>");
MODULE_DESCRIPTION("NXP PDM Microphone Interface (MICFIL) driver");
MODULE_LICENSE("GPL v2");