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ASoC: Intel: bytcr_rt5640: add MCLK support

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Use platform clocks "pmc_plt_clk_3" when MCLK quirk is defined.
By default always enable the 19.2 MHz PLL.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Irina Tirdea 2016-08-12 16:27:57 -05:00 committed by Mark Brown
parent 59e8b6520c
commit df1a2776a7
1 changed files with 171 additions and 14 deletions
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185
sound/soc/intel/boards/bytcr_rt5640.c
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@ -26,6 +26,7 @@
#include <linux/slab.h>
#include <asm/cpu_device_id.h>
#include <asm/platform_sst_audio.h>
#include <linux/clk.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
@ -49,18 +50,104 @@ enum {
#define BYT_RT5640_SSP2_AIF2 BIT(19) /* default is using AIF1 */
#define BYT_RT5640_SSP0_AIF1 BIT(20)
#define BYT_RT5640_SSP0_AIF2 BIT(21)
#define BYT_RT5640_MCLK_EN BIT(22)
#define BYT_RT5640_MCLK_25MHZ BIT(23)
struct byt_rt5640_private {
struct clk *mclk;
};
static unsigned long byt_rt5640_quirk = BYT_RT5640_DMIC1_MAP |
BYT_RT5640_DMIC_EN;
BYT_RT5640_DMIC_EN |
BYT_RT5640_MCLK_EN;
#define BYT_CODEC_DAI1 "rt5640-aif1"
#define BYT_CODEC_DAI2 "rt5640-aif2"
static inline struct snd_soc_dai *byt_get_codec_dai(struct snd_soc_card *card)
{
struct snd_soc_pcm_runtime *rtd;
list_for_each_entry(rtd, &card->rtd_list, list) {
if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI1,
strlen(BYT_CODEC_DAI1)))
return rtd->codec_dai;
if (!strncmp(rtd->codec_dai->name, BYT_CODEC_DAI2,
strlen(BYT_CODEC_DAI2)))
return rtd->codec_dai;
}
return NULL;
}
static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *k, int event)
{
struct snd_soc_dapm_context *dapm = w->dapm;
struct snd_soc_card *card = dapm->card;
struct snd_soc_dai *codec_dai;
struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
int ret;
codec_dai = byt_get_codec_dai(card);
if (!codec_dai) {
dev_err(card->dev,
"Codec dai not found; Unable to set platform clock\n");
return -EIO;
}
if (SND_SOC_DAPM_EVENT_ON(event)) {
if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk) {
ret = clk_prepare_enable(priv->mclk);
if (ret < 0) {
dev_err(card->dev,
"could not configure MCLK state");
return ret;
}
}
ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
48000 * 512,
SND_SOC_CLOCK_IN);
} else {
/*
* Set codec clock source to internal clock before
* turning off the platform clock. Codec needs clock
* for Jack detection and button press
*/
ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_RCCLK,
0,
SND_SOC_CLOCK_IN);
if (!ret) {
if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk)
clk_disable_unprepare(priv->mclk);
}
}
if (ret < 0) {
dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
return ret;
}
return 0;
}
static const struct snd_soc_dapm_widget byt_rt5640_widgets[] = {
SND_SOC_DAPM_HP("Headphone", NULL),
SND_SOC_DAPM_MIC("Headset Mic", NULL),
SND_SOC_DAPM_MIC("Internal Mic", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
platform_clock_control, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
};
static const struct snd_soc_dapm_route byt_rt5640_audio_map[] = {
{"Headphone", NULL, "Platform Clock"},
{"Headset Mic", NULL, "Platform Clock"},
{"Internal Mic", NULL, "Platform Clock"},
{"Speaker", NULL, "Platform Clock"},
{"Headset Mic", NULL, "MICBIAS1"},
{"IN2P", NULL, "Headset Mic"},
{"Headphone", NULL, "HPOL"},
@ -150,21 +237,41 @@ static int byt_rt5640_aif1_hw_params(struct snd_pcm_substream *substream,
ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
params_rate(params) * 512,
SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(rtd->dev, "can't set codec clock %d\n", ret);
return ret;
}
if ((byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) ||
(byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
if (!(byt_rt5640_quirk & BYT_RT5640_MCLK_EN)) {
/* use bitclock as PLL input */
if ((byt_rt5640_quirk & BYT_RT5640_SSP0_AIF1) ||
(byt_rt5640_quirk & BYT_RT5640_SSP0_AIF2)) {
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
params_rate(params) * 32, /* FIXME */
params_rate(params) * 512);
/* 2x16 bit slots on SSP0 */
ret = snd_soc_dai_set_pll(codec_dai, 0,
RT5640_PLL1_S_BCLK1,
params_rate(params) * 32,
params_rate(params) * 512);
} else {
/* 2x15 bit slots on SSP2 */
ret = snd_soc_dai_set_pll(codec_dai, 0,
RT5640_PLL1_S_BCLK1,
params_rate(params) * 50,
params_rate(params) * 512);
}
} else {
ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
params_rate(params) * 50,
params_rate(params) * 512);
if (byt_rt5640_quirk & BYT_RT5640_MCLK_25MHZ) {
ret = snd_soc_dai_set_pll(codec_dai, 0,
RT5640_PLL1_S_MCLK,
25000000,
params_rate(params) * 512);
} else {
ret = snd_soc_dai_set_pll(codec_dai, 0,
RT5640_PLL1_S_MCLK,
19200000,
params_rate(params) * 512);
}
}
if (ret < 0) {
@ -188,7 +295,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"),
},
.driver_data = (unsigned long *)BYT_RT5640_IN1_MAP,
.driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
BYT_RT5640_MCLK_EN),
},
{
.callback = byt_rt5640_quirk_cb,
@ -199,7 +307,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
.driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
BYT_RT5640_MONO_SPEAKER |
BYT_RT5640_DIFF_MIC |
BYT_RT5640_SSP0_AIF2
BYT_RT5640_SSP0_AIF2 |
BYT_RT5640_MCLK_EN
),
},
{
@ -209,7 +318,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Venue 8 Pro 5830"),
},
.driver_data = (unsigned long *)(BYT_RT5640_DMIC2_MAP |
BYT_RT5640_DMIC_EN),
BYT_RT5640_DMIC_EN |
BYT_RT5640_MCLK_EN),
},
{
.callback = byt_rt5640_quirk_cb,
@ -217,7 +327,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "HP ElitePad 1000 G2"),
},
.driver_data = (unsigned long *)BYT_RT5640_IN1_MAP,
.driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
BYT_RT5640_MCLK_EN),
},
{}
};
@ -228,13 +339,18 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
struct snd_soc_codec *codec = runtime->codec;
struct snd_soc_card *card = runtime->card;
const struct snd_soc_dapm_route *custom_map;
struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
int num_routes;
card->dapm.idle_bias_off = true;
rt5640_sel_asrc_clk_src(codec,
RT5640_DA_STEREO_FILTER |
RT5640_AD_STEREO_FILTER,
RT5640_DA_MONO_L_FILTER |
RT5640_DA_MONO_R_FILTER |
RT5640_AD_STEREO_FILTER |
RT5640_AD_MONO_L_FILTER |
RT5640_AD_MONO_R_FILTER,
RT5640_CLK_SEL_ASRC);
ret = snd_soc_add_card_controls(card, byt_rt5640_controls,
@ -312,6 +428,30 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
snd_soc_dapm_ignore_suspend(&card->dapm, "Speaker");
if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && priv->mclk) {
/*
* The firmware might enable the clock at
* boot (this information may or may not
* be reflected in the enable clock register).
* To change the rate we must disable the clock
* first to cover these cases. Due to common
* clock framework restrictions that do not allow
* to disable a clock that has not been enabled,
* we need to enable the clock first.
*/
ret = clk_prepare_enable(priv->mclk);
if (!ret)
clk_disable_unprepare(priv->mclk);
if (byt_rt5640_quirk & BYT_RT5640_MCLK_25MHZ)
ret = clk_set_rate(priv->mclk, 25000000);
else
ret = clk_set_rate(priv->mclk, 19200000);
if (ret)
dev_err(card->dev, "unable to set MCLK rate\n");
}
return ret;
}
@ -490,6 +630,7 @@ static bool is_valleyview(void)
return true;
}
static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
{
int ret_val = 0;
@ -497,10 +638,16 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
const char *i2c_name = NULL;
int i;
int dai_index;
struct byt_rt5640_private *priv;
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
if (!priv)
return -ENOMEM;
/* register the soc card */
byt_rt5640_card.dev = &pdev->dev;
mach = byt_rt5640_card.dev->platform_data;
snd_soc_card_set_drvdata(&byt_rt5640_card, priv);
/* fix index of codec dai */
dai_index = MERR_DPCM_COMPR + 1;
@ -561,6 +708,16 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
byt_rt5640_cpu_dai_name;
}
if ((byt_rt5640_quirk & BYT_RT5640_MCLK_EN) && (is_valleyview())) {
priv->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
if (IS_ERR(priv->mclk)) {
dev_err(&pdev->dev,
"Failed to get MCLK from pmc_plt_clk_3: %ld\n",
PTR_ERR(priv->mclk));
return PTR_ERR(priv->mclk);
}
}
ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5640_card);
if (ret_val) {