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ASoC: madera: Read device tree configuration

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Read the configuration of the Madera ASoC driver from device tree.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20190722135209.30302-1-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2019-07-22 14:52:09 +01:00 committed by Mark Brown
parent b6319b061b
commit 748fd07e2b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 97 additions and 0 deletions
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97
sound/soc/codecs/madera.c
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@ -300,6 +300,100 @@ int madera_free_overheat(struct madera_priv *priv)
}
EXPORT_SYMBOL_GPL(madera_free_overheat);
static int madera_get_variable_u32_array(struct device *dev,
const char *propname,
u32 *dest, int n_max,
int multiple)
{
int n, ret;
n = device_property_count_u32(dev, propname);
if (n < 0) {
if (n == -EINVAL)
return 0; /* missing, ignore */
dev_warn(dev, "%s malformed (%d)\n", propname, n);
return n;
} else if ((n % multiple) != 0) {
dev_warn(dev, "%s not a multiple of %d entries\n",
propname, multiple);
return -EINVAL;
}
if (n > n_max)
n = n_max;
ret = device_property_read_u32_array(dev, propname, dest, n);
if (ret < 0)
return ret;
return n;
}
static void madera_prop_get_inmode(struct madera_priv *priv)
{
struct madera *madera = priv->madera;
struct madera_codec_pdata *pdata = &madera->pdata.codec;
u32 tmp[MADERA_MAX_INPUT * MADERA_MAX_MUXED_CHANNELS];
int n, i, in_idx, ch_idx;
BUILD_BUG_ON(ARRAY_SIZE(pdata->inmode) != MADERA_MAX_INPUT);
BUILD_BUG_ON(ARRAY_SIZE(pdata->inmode[0]) != MADERA_MAX_MUXED_CHANNELS);
n = madera_get_variable_u32_array(madera->dev, "cirrus,inmode",
tmp, ARRAY_SIZE(tmp),
MADERA_MAX_MUXED_CHANNELS);
if (n < 0)
return;
in_idx = 0;
ch_idx = 0;
for (i = 0; i < n; ++i) {
pdata->inmode[in_idx][ch_idx] = tmp[i];
if (++ch_idx == MADERA_MAX_MUXED_CHANNELS) {
ch_idx = 0;
++in_idx;
}
}
}
static void madera_prop_get_pdata(struct madera_priv *priv)
{
struct madera *madera = priv->madera;
struct madera_codec_pdata *pdata = &madera->pdata.codec;
u32 out_mono[ARRAY_SIZE(pdata->out_mono)];
int i, n;
madera_prop_get_inmode(priv);
n = madera_get_variable_u32_array(madera->dev, "cirrus,out-mono",
out_mono, ARRAY_SIZE(out_mono), 1);
if (n > 0)
for (i = 0; i < n; ++i)
pdata->out_mono[i] = !!out_mono[i];
madera_get_variable_u32_array(madera->dev,
"cirrus,max-channels-clocked",
pdata->max_channels_clocked,
ARRAY_SIZE(pdata->max_channels_clocked),
1);
madera_get_variable_u32_array(madera->dev, "cirrus,pdm-fmt",
pdata->pdm_fmt,
ARRAY_SIZE(pdata->pdm_fmt), 1);
madera_get_variable_u32_array(madera->dev, "cirrus,pdm-mute",
pdata->pdm_mute,
ARRAY_SIZE(pdata->pdm_mute), 1);
madera_get_variable_u32_array(madera->dev, "cirrus,dmic-ref",
pdata->dmic_ref,
ARRAY_SIZE(pdata->dmic_ref), 1);
}
int madera_core_init(struct madera_priv *priv)
{
int i;
@ -308,6 +402,9 @@ int madera_core_init(struct madera_priv *priv)
BUILD_BUG_ON(!madera_mixer_texts[MADERA_NUM_MIXER_INPUTS - 1]);
BUILD_BUG_ON(!madera_mixer_values[MADERA_NUM_MIXER_INPUTS - 1]);
if (!dev_get_platdata(priv->madera->dev))
madera_prop_get_pdata(priv);
mutex_init(&priv->rate_lock);
for (i = 0; i < MADERA_MAX_HP_OUTPUT; i++)