#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>
#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"},
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)) {
-
- ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
- params_rate(params) * 32, /* FIXME */
- params_rate(params) * 512);
+ 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)) {
+
+ /* 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) {
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,
.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
),
},
{
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,
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),
},
{}
};
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,
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;
}
return true;
}
+
static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
{
int ret_val = 0;
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;
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) {
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