blob: 934bc55f8b6342f402c3c82019bebf72cf7c8341 [file] [log] [blame] [edit]
/*
* NXP AMIX ALSA SoC Digital Audio Interface (DAI) driver
*
* Copyright 2017 NXP
*
* Author: Viorel Suman <viorel.suman@nxp.com>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include "fsl_amix.h"
#define SOC_ENUM_SINGLE_S(xreg, xshift, xtexts) \
SOC_ENUM_SINGLE(xreg, xshift, ARRAY_SIZE(xtexts), xtexts)
typedef int (*fsl_amix_state_handler)(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr);
static const char
*tdm_sel[] = { "TDM1", "TDM2", },
*mode_sel[] = { "Disabled", "TDM1", "TDM2", "Mixed", },
*width_sel[] = { "16b", "18b", "20b", "24b", "32b", },
*pol_sel[] = { "Positive edge", "Negative edge", },
*endis_sel[] = { "Disabled", "Enabled", },
*updn_sel[] = { "Downward", "Upward", },
*mask_sel[] = { "Unmask", "Mask", };
static const struct soc_enum fsl_amix_enum[] = {
/* FSL_AMIX_CTR enums */
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_MIXCLK_SHIFT, tdm_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_OUTSRC_SHIFT, mode_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_OUTWIDTH_SHIFT, width_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_OUTCKPOL_SHIFT, pol_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_MASKRTDF_SHIFT, mask_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_MASKCKDF_SHIFT, mask_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_SYNCMODE_SHIFT, endis_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_CTR, FSL_AMIX_CTR_SYNCSRC_SHIFT, tdm_sel),
/* FSL_AMIX_ATCR0 enums */
SOC_ENUM_SINGLE_S(FSL_AMIX_ATCR0, 0, endis_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_ATCR0, 1, updn_sel),
/* FSL_AMIX_ATCR1 enums */
SOC_ENUM_SINGLE_S(FSL_AMIX_ATCR1, 0, endis_sel),
SOC_ENUM_SINGLE_S(FSL_AMIX_ATCR1, 1, updn_sel),
};
static int fsl_amix_state_dis_tdm1(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce the proper TDM is started */
if (!(priv->tdms & BIT(0))) {
dev_err(comp->dev, "DIS->TDM1: TDM1 is not started!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(0);
return 0;
}
static int fsl_amix_state_dis_tdm2(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce the proper TDM is started */
if (!(priv->tdms & BIT(1))) {
dev_err(comp->dev, "DIS->TDM2: TDM2 is not started!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(1);
return 0;
}
static int fsl_amix_state_tdm1_dis(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce the proper TDM is started */
if (!(priv->tdms & BIT(0))) {
dev_err(comp->dev, "TDM1->DIS: TDM1 is not started!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static int fsl_amix_state_tdm2_dis(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce the proper TDM is started */
if (!(priv->tdms & BIT(1))) {
dev_err(comp->dev, "TDM2->DIS: TDM2 is not started!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static int fsl_amix_state_dis_mix(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "DIS->MIX: Please start both TDMs!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static int fsl_amix_state_tdm1_tdm2(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "TDM1->TDM2: Please start both TDMs!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(1);
return 0;
}
static int fsl_amix_state_tdm2_tdm1(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "TDM2->TDM1: Please start both TDMs!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(0);
return 0;
}
static int fsl_amix_state_tdm1_mix(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "TDM1->MIX: Please start both TDMs!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static int fsl_amix_state_tdm2_mix(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "TDM2->MIX: Please start both TDMs!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static int fsl_amix_state_mix_tdm1(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "MIX->TDM1: Please start both TDMs!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(0);
return 0;
}
static int fsl_amix_state_mix_tdm2(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "MIX->TDM2: Please start both TDMs!\n");
return -EINVAL;
}
/* Set mix clock */
(*mask) |= FSL_AMIX_CTR_MIXCLK_MASK;
(*ctr) |= FSL_AMIX_CTR_MIXCLK(1);
return 0;
}
static int fsl_amix_state_mix_dis(struct snd_soc_component *comp,
unsigned int *mask, unsigned int *ctr)
{
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
/* Enforce all TDMs are started */
if (priv->tdms != 3) {
dev_err(comp->dev, "MIX->DIS: Please start both TDMs!\n");
return -EINVAL;
}
/* Keep mix clock unchanged */
return 0;
}
static const fsl_amix_state_handler state_machine[4][4] = {
/* From Disabled */
{
0, /* To Disabled, do nothing */
fsl_amix_state_dis_tdm1, /* To TDM1*/
fsl_amix_state_dis_tdm2, /* To TDM2 */
fsl_amix_state_dis_mix /* To Mixed */
},
/* From TDM1 */
{
fsl_amix_state_tdm1_dis, /* To Disabled */
0, /* To TDM1, do nothing */
fsl_amix_state_tdm1_tdm2, /* To TDM2 */
fsl_amix_state_tdm1_mix /* To Mixed */
},
/* From TDM2 */
{
fsl_amix_state_tdm2_dis, /* To Disabled */
fsl_amix_state_tdm2_tdm1, /* To TDM1 */
0, /* To TDM2, do nothing */
fsl_amix_state_tdm2_mix /* To Mixed */
},
/* From Mixed */
{
fsl_amix_state_mix_dis, /* To Disabled */
fsl_amix_state_mix_tdm1, /* To TDM1 */
fsl_amix_state_mix_tdm2, /* To TDM2 */
0 /* To Mixed, do nothing */
}
};
static int fsl_amix_put_mix_clk_src(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int *item = ucontrol->value.enumerated.item;
unsigned int reg_val, val, mix_clk;
int ret = 0;
/* Get current state */
ret = snd_soc_component_read(comp, FSL_AMIX_CTR, &reg_val);
if (ret)
return ret;
mix_clk = reg_val & 1;
val = snd_soc_enum_item_to_val(e, item[0]);
dev_dbg(comp->dev, "[%s]: TDMs=x%08x, val=x%08x\n", __func__, priv->tdms, val);
/**
* Ensure the current selected mixer clock is available
* for configuration propagation
*/
if (!(priv->tdms & BIT(mix_clk))) {
dev_err(comp->dev, "MIXCLK: A started TDM%d is required "
"for configuration propagation!\n", mix_clk + 1);
return -EINVAL;
}
if (!(priv->tdms & BIT(val))) {
dev_err(comp->dev, "The selected clock source has "
"no TDM%d enabled!\n", val + 1);
return -EINVAL;
}
return snd_soc_put_enum_double(kcontrol, ucontrol);
}
static int fsl_amix_put_out_src(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *comp = snd_kcontrol_chip(kcontrol);
struct fsl_amix *priv = snd_soc_component_get_drvdata(comp);
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int *item = ucontrol->value.enumerated.item;
u32 out_src, mix_clk;
unsigned int reg_val, val, mask = 0, ctr = 0;
int ret = 0;
/* Get current state */
ret = snd_soc_component_read(comp, FSL_AMIX_CTR, &reg_val);
if (ret)
return ret;
/* "From" state */
out_src = ((reg_val & FSL_AMIX_CTR_OUTSRC_MASK) >> FSL_AMIX_CTR_OUTSRC_SHIFT);
mix_clk = reg_val & 1;
/* "To" state */
val = snd_soc_enum_item_to_val(e, item[0]);
dev_dbg(comp->dev, "[%s]: TDMs=x%08x, val=x%08x\n", __func__, priv->tdms, val);
/* Check if state is changing ... */
if (!state_machine[out_src][val])
return 0;
/**
* Ensure the current selected mixer clock is available
* for configuration propagation
*/
if (!(priv->tdms & BIT(mix_clk))) {
dev_err(comp->dev, "MIXCLK: A started TDM%d is required "
"for configuration propagation!\n", mix_clk + 1);
return -EINVAL;
}
/* Check state transition constraints */
ret = state_machine[out_src][val](comp, &mask, &ctr);
if (ret)
return ret;
/* Complete transition to new state */
mask |= FSL_AMIX_CTR_OUTSRC_MASK;
ctr |= FSL_AMIX_CTR_OUTSRC(val);
return snd_soc_component_update_bits(comp, FSL_AMIX_CTR, mask, ctr);
}
static const struct snd_kcontrol_new fsl_amix_snd_controls[] = {
/* FSL_AMIX_CTR controls */
SOC_ENUM_EXT("Mixing Clock Source", fsl_amix_enum[0],
snd_soc_get_enum_double, fsl_amix_put_mix_clk_src),
SOC_ENUM_EXT("Output Source", fsl_amix_enum[1],
snd_soc_get_enum_double, fsl_amix_put_out_src),
SOC_ENUM("Output Width", fsl_amix_enum[2]),
SOC_ENUM("Output Clock Polarity", fsl_amix_enum[3]),
SOC_ENUM("Frame Rate Diff Error", fsl_amix_enum[4]),
SOC_ENUM("Clock Freq Diff Error", fsl_amix_enum[5]),
SOC_ENUM("Sync Mode Config", fsl_amix_enum[6]),
SOC_ENUM("Sync Mode Clk Source", fsl_amix_enum[7]),
/* TDM1 Attenuation controls */
SOC_ENUM("TDM1 Attenuation", fsl_amix_enum[8]),
SOC_ENUM("TDM1 Attenuation Direction", fsl_amix_enum[9]),
SOC_SINGLE("TDM1 Attenuation Step Divider", FSL_AMIX_ATCR0,
2, 0x00fff, 0),
SOC_SINGLE("TDM1 Attenuation Initial Value", FSL_AMIX_ATIVAL0,
0, 0x3ffff, 0),
SOC_SINGLE("TDM1 Attenuation Step Up Factor", FSL_AMIX_ATSTPUP0,
0, 0x3ffff, 0),
SOC_SINGLE("TDM1 Attenuation Step Down Factor", FSL_AMIX_ATSTPDN0,
0, 0x3ffff, 0),
SOC_SINGLE("TDM1 Attenuation Step Target", FSL_AMIX_ATSTPTGT0,
0, 0x3ffff, 0),
/* TDM2 Attenuation controls */
SOC_ENUM("TDM2 Attenuation", fsl_amix_enum[10]),
SOC_ENUM("TDM2 Attenuation Direction", fsl_amix_enum[11]),
SOC_SINGLE("TDM2 Attenuation Step Divider", FSL_AMIX_ATCR1,
2, 0x00fff, 0),
SOC_SINGLE("TDM2 Attenuation Initial Value", FSL_AMIX_ATIVAL1,
0, 0x3ffff, 0),
SOC_SINGLE("TDM2 Attenuation Step Up Factor", FSL_AMIX_ATSTPUP1,
0, 0x3ffff, 0),
SOC_SINGLE("TDM2 Attenuation Step Down Factor", FSL_AMIX_ATSTPDN1,
0, 0x3ffff, 0),
SOC_SINGLE("TDM2 Attenuation Step Target", FSL_AMIX_ATSTPTGT1,
0, 0x3ffff, 0),
};
static int fsl_amix_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct fsl_amix *priv = snd_soc_dai_get_drvdata(dai);
u32 mask = 0, ctr = 0;
/* AMIX is working in DSP_A format only */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
break;
default:
return -EINVAL;
}
/* For playback the AMIX is slave, and for record is master */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_IB_NF:
/* Output data will be written on positive edge of the clock */
ctr |= FSL_AMIX_CTR_OUTCKPOL(0);
break;
case SND_SOC_DAIFMT_NB_NF:
/* Output data will be written on negative edge of the clock */
ctr |= FSL_AMIX_CTR_OUTCKPOL(1);
break;
default:
return -EINVAL;
}
mask |= FSL_AMIX_CTR_OUTCKPOL_MASK;
return regmap_update_bits(priv->regmap, FSL_AMIX_CTR, mask, ctr);
}
static int fsl_amix_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct fsl_amix *priv = snd_soc_dai_get_drvdata(dai);
/* Capture stream shall not be handled */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
return 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
priv->tdms |= BIT(dai->driver->id);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
priv->tdms &= ~BIT(dai->driver->id);
break;
default:
return -EINVAL;
}
return 0;
}
static struct snd_soc_dai_ops fsl_amix_dai_ops = {
.set_fmt = fsl_amix_dai_set_fmt,
.trigger = fsl_amix_dai_trigger,
};
static struct snd_soc_dai_driver fsl_amix_dai[] = {
{
.id = 0,
.name = "amix-0",
.playback = {
.stream_name = "AMIX-Playback-0",
.channels_min = 8,
.channels_max = 8,
.rate_min = 8000,
.rate_max = 96000,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = FSL_AMIX_FORMATS,
},
.capture = {
.stream_name = "AMIX-Capture-0",
.channels_min = 8,
.channels_max = 8,
.rate_min = 8000,
.rate_max = 96000,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = FSL_AMIX_FORMATS,
},
.ops = &fsl_amix_dai_ops,
},
{
.id = 1,
.name = "amix-1",
.playback = {
.stream_name = "AMIX-Playback-1",
.channels_min = 8,
.channels_max = 8,
.rate_min = 8000,
.rate_max = 96000,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = FSL_AMIX_FORMATS,
},
.capture = {
.stream_name = "AMIX-Capture-1",
.channels_min = 8,
.channels_max = 8,
.rate_min = 8000,
.rate_max = 96000,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = FSL_AMIX_FORMATS,
},
.ops = &fsl_amix_dai_ops,
},
};
static const struct snd_soc_component_driver fsl_amix_component = {
.name = "fsl-amix-dai",
.controls = fsl_amix_snd_controls,
.num_controls = ARRAY_SIZE(fsl_amix_snd_controls),
};
static bool fsl_amix_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case FSL_AMIX_CTR:
case FSL_AMIX_STR:
case FSL_AMIX_ATCR0:
case FSL_AMIX_ATIVAL0:
case FSL_AMIX_ATSTPUP0:
case FSL_AMIX_ATSTPDN0:
case FSL_AMIX_ATSTPTGT0:
case FSL_AMIX_ATTNVAL0:
case FSL_AMIX_ATSTP0:
case FSL_AMIX_ATCR1:
case FSL_AMIX_ATIVAL1:
case FSL_AMIX_ATSTPUP1:
case FSL_AMIX_ATSTPDN1:
case FSL_AMIX_ATSTPTGT1:
case FSL_AMIX_ATTNVAL1:
case FSL_AMIX_ATSTP1:
return true;
default:
return false;
}
}
static bool fsl_amix_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case FSL_AMIX_CTR:
case FSL_AMIX_ATCR0:
case FSL_AMIX_ATIVAL0:
case FSL_AMIX_ATSTPUP0:
case FSL_AMIX_ATSTPDN0:
case FSL_AMIX_ATSTPTGT0:
case FSL_AMIX_ATCR1:
case FSL_AMIX_ATIVAL1:
case FSL_AMIX_ATSTPUP1:
case FSL_AMIX_ATSTPDN1:
case FSL_AMIX_ATSTPTGT1:
return true;
default:
return false;
}
}
static struct reg_default fsl_amix_reg[] = {
{ FSL_AMIX_CTR, 0x00060 },
{ FSL_AMIX_STR, 0x00003 },
{ FSL_AMIX_ATCR0, 0x00000 },
{ FSL_AMIX_ATIVAL0, 0x3FFFF },
{ FSL_AMIX_ATSTPUP0, 0x2AAAA },
{ FSL_AMIX_ATSTPDN0, 0x30000 },
{ FSL_AMIX_ATSTPTGT0, 0x00010 },
{ FSL_AMIX_ATTNVAL0, 0x00000 },
{ FSL_AMIX_ATSTP0, 0x00000 },
{ FSL_AMIX_ATCR1, 0x00000 },
{ FSL_AMIX_ATIVAL1, 0x3FFFF },
{ FSL_AMIX_ATSTPUP1, 0x2AAAA },
{ FSL_AMIX_ATSTPDN1, 0x30000 },
{ FSL_AMIX_ATSTPTGT1, 0x00010 },
{ FSL_AMIX_ATTNVAL1, 0x00000 },
{ FSL_AMIX_ATSTP1, 0x00000 },
};
static const struct regmap_config fsl_amix_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = FSL_AMIX_ATSTP1,
.reg_defaults = fsl_amix_reg,
.num_reg_defaults = ARRAY_SIZE(fsl_amix_reg),
.readable_reg = fsl_amix_readable_reg,
.writeable_reg = fsl_amix_writeable_reg,
.cache_type = REGCACHE_FLAT,
};
static int fsl_amix_probe(struct platform_device *pdev)
{
struct fsl_amix *priv;
struct resource *res;
void __iomem *regs;
int ret;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->pdev = pdev;
/* Get the addresses */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(regs))
return PTR_ERR(regs);
priv->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "ipg", regs,
&fsl_amix_regmap_config);
if (IS_ERR(priv->regmap)) {
dev_err(&pdev->dev, "failed to init regmap\n");
return PTR_ERR(priv->regmap);
}
priv->ipg_clk = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(priv->ipg_clk)) {
dev_err(&pdev->dev, "failed to get ipg clock\n");
return PTR_ERR(priv->ipg_clk);
}
platform_set_drvdata(pdev, priv);
pm_runtime_enable(&pdev->dev);
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_amix_component,
fsl_amix_dai, ARRAY_SIZE(fsl_amix_dai));
if (ret) {
dev_err(&pdev->dev, "failed to register ASoC DAI\n");
return ret;
}
return 0;
}
#ifdef CONFIG_PM
static int fsl_amix_runtime_resume(struct device *dev)
{
struct fsl_amix *priv = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(priv->ipg_clk);
if (ret) {
dev_err(dev, "Failed to enable IPG clock: %d\n", ret);
return ret;
}
regcache_cache_only(priv->regmap, false);
regcache_mark_dirty(priv->regmap);
return regcache_sync(priv->regmap);
}
static int fsl_amix_runtime_suspend(struct device *dev)
{
struct fsl_amix *priv = dev_get_drvdata(dev);
regcache_cache_only(priv->regmap, true);
clk_disable_unprepare(priv->ipg_clk);
return 0;
}
#endif /* CONFIG_PM */
static const struct dev_pm_ops fsl_amix_pm = {
SET_RUNTIME_PM_OPS(fsl_amix_runtime_suspend, fsl_amix_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
};
static const struct of_device_id fsl_amix_ids[] = {
{ .compatible = "fsl,imx8qm-amix", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, fsl_amix_ids);
static struct platform_driver fsl_amix_driver = {
.probe = fsl_amix_probe,
.driver = {
.name = "fsl-amix",
.of_match_table = fsl_amix_ids,
.pm = &fsl_amix_pm,
},
};
module_platform_driver(fsl_amix_driver);
MODULE_DESCRIPTION("NXP AMIX ASoC DAI driver");
MODULE_AUTHOR("Viorel Suman <viorel.suman@nxp.com>");
MODULE_ALIAS("platform:fsl-amix");
MODULE_LICENSE("GPL v2");