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ASoC: da7213: add default clock handling

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This adds default clock/PLL configuration to the driver
for usage with generic drivers like simple-card for usage
with a fixed rate clock.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Link: https://lore.kernel.org/r/20200626164623.87894-1-sebastian.reichel@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sebastian Reichel 2020-06-26 18:46:23 +02:00 committed by Mark Brown
parent 68d1abe186
commit 5146b6a92c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 80 additions and 5 deletions
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83
sound/soc/codecs/da7213.c
View File

@ -1156,6 +1156,7 @@ static int da7213_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
u8 dai_ctrl = 0;
u8 fs;
@ -1181,33 +1182,43 @@ static int da7213_hw_params(struct snd_pcm_substream *substream,
switch (params_rate(params)) {
case 8000:
fs = DA7213_SR_8000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
case 11025:
fs = DA7213_SR_11025;
da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800;
break;
case 12000:
fs = DA7213_SR_12000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
case 16000:
fs = DA7213_SR_16000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
case 22050:
fs = DA7213_SR_22050;
da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800;
break;
case 32000:
fs = DA7213_SR_32000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
case 44100:
fs = DA7213_SR_44100;
da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800;
break;
case 48000:
fs = DA7213_SR_48000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
case 88200:
fs = DA7213_SR_88200;
da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800;
break;
case 96000:
fs = DA7213_SR_96000;
da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000;
break;
default:
return -EINVAL;
@ -1392,9 +1403,9 @@ static int da7213_set_component_sysclk(struct snd_soc_component *component,
}
/* Supported PLL input frequencies are 32KHz, 5MHz - 54MHz. */
static int da7213_set_component_pll(struct snd_soc_component *component,
int pll_id, int source,
unsigned int fref, unsigned int fout)
static int _da7213_set_component_pll(struct snd_soc_component *component,
int pll_id, int source,
unsigned int fref, unsigned int fout)
{
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
@ -1503,6 +1514,16 @@ static int da7213_set_component_pll(struct snd_soc_component *component,
return 0;
}
static int da7213_set_component_pll(struct snd_soc_component *component,
int pll_id, int source,
unsigned int fref, unsigned int fout)
{
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
da7213->fixed_clk_auto_pll = false;
return _da7213_set_component_pll(component, pll_id, source, fref, fout);
}
/* DAI operations */
static const struct snd_soc_dai_ops da7213_dai_ops = {
.hw_params = da7213_hw_params,
@ -1532,6 +1553,50 @@ static struct snd_soc_dai_driver da7213_dai = {
.symmetric_rates = 1,
};
static int da7213_set_auto_pll(struct snd_soc_component *component, bool enable)
{
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
int mode;
if (!da7213->fixed_clk_auto_pll)
return 0;
da7213->mclk_rate = clk_get_rate(da7213->mclk);
if (enable) {
/* Slave mode needs SRM for non-harmonic frequencies */
if (da7213->master)
mode = DA7213_SYSCLK_PLL;
else
mode = DA7213_SYSCLK_PLL_SRM;
/* PLL is not required for harmonic frequencies */
switch (da7213->out_rate) {
case DA7213_PLL_FREQ_OUT_90316800:
if (da7213->mclk_rate == 11289600 ||
da7213->mclk_rate == 22579200 ||
da7213->mclk_rate == 45158400)
mode = DA7213_SYSCLK_MCLK;
break;
case DA7213_PLL_FREQ_OUT_98304000:
if (da7213->mclk_rate == 12288000 ||
da7213->mclk_rate == 24576000 ||
da7213->mclk_rate == 49152000)
mode = DA7213_SYSCLK_MCLK;
break;
default:
return -1;
}
} else {
/* Disable PLL in standby */
mode = DA7213_SYSCLK_MCLK;
}
return _da7213_set_component_pll(component, 0, mode,
da7213->mclk_rate, da7213->out_rate);
}
static int da7213_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
@ -1551,6 +1616,8 @@ static int da7213_set_bias_level(struct snd_soc_component *component,
"Failed to enable mclk\n");
return ret;
}
da7213_set_auto_pll(component, true);
}
}
break;
@ -1562,8 +1629,10 @@ static int da7213_set_bias_level(struct snd_soc_component *component,
DA7213_VMID_EN | DA7213_BIAS_EN);
} else {
/* Remove MCLK */
if (da7213->mclk)
if (da7213->mclk) {
da7213_set_auto_pll(component, false);
clk_disable_unprepare(da7213->mclk);
}
}
break;
case SND_SOC_BIAS_OFF:
@ -1693,7 +1762,6 @@ static struct da7213_platform_data
return pdata;
}
static int da7213_probe(struct snd_soc_component *component)
{
struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
@ -1829,6 +1897,11 @@ static int da7213_probe(struct snd_soc_component *component)
return PTR_ERR(da7213->mclk);
else
da7213->mclk = NULL;
} else {
/* Do automatic PLL handling assuming fixed clock until
* set_pll() has been called. This makes the codec usable
* with the simple-audio-card driver. */
da7213->fixed_clk_auto_pll = true;
}
return 0;

2
sound/soc/codecs/da7213.h
View File

@ -535,10 +535,12 @@ struct da7213_priv {
struct regulator_bulk_data supplies[DA7213_NUM_SUPPLIES];
struct clk *mclk;
unsigned int mclk_rate;
unsigned int out_rate;
int clk_src;
bool master;
bool alc_calib_auto;
bool alc_en;
bool fixed_clk_auto_pll;
struct da7213_platform_data *pdata;
};