@@ -21,24 +21,132 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
+#include <linux/clk.h>
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/slab.h>
+#include <asm/platform_sst_audio.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../../codecs/rt5651.h"
#include "../atom/sst-atom-controls.h"
+#include "../common/sst-acpi.h"
+
+enum {
+ BYT_RT5651_DMIC_MAP,
+ BYT_RT5651_IN1_MAP,
+};
+
+#define BYT_RT5651_MAP(quirk) ((quirk) & GENMASK(7, 0))
+#define BYT_RT5651_DMIC_EN BIT(16)
+#define BYT_RT5651_MCLK_EN BIT(17)
+#define BYT_RT5651_MCLK_25MHZ BIT(18)
+
+struct byt_rt5651_private {
+ struct clk *mclk;
+};
+
+static unsigned long byt_rt5651_quirk = BYT_RT5651_DMIC_MAP |
+ BYT_RT5651_DMIC_EN |
+ BYT_RT5651_MCLK_EN;
+
+static void log_quirks(struct device *dev)
+{
+ if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_DMIC_MAP)
+ dev_info(dev, "quirk DMIC_MAP enabled");
+ if (BYT_RT5651_MAP(byt_rt5651_quirk) == BYT_RT5651_IN1_MAP)
+ dev_info(dev, "quirk IN1_MAP enabled");
+ if (byt_rt5651_quirk & BYT_RT5651_DMIC_EN)
+ dev_info(dev, "quirk DMIC enabled");
+ if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
+ dev_info(dev, "quirk MCLK_EN enabled");
+ if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
+ dev_info(dev, "quirk MCLK_25MHZ enabled");
+}
+
+#define BYT_CODEC_DAI1 "rt5651-aif1"
+
+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;
+ }
+ 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_rt5651_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_rt5651_quirk & BYT_RT5651_MCLK_EN) {
+ 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, RT5651_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, RT5651_SCLK_S_RCCLK,
+ 48000 * 512,
+ SND_SOC_CLOCK_IN);
+ if (!ret)
+ if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN)
+ 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_rt5651_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_rt5651_audio_map[] = {
+ {"Headphone", NULL, "Platform Clock"},
+ {"Headset Mic", NULL, "Platform Clock"},
+ {"Internal Mic", NULL, "Platform Clock"},
+ {"Speaker", NULL, "Platform Clock"},
+
{"AIF1 Playback", NULL, "ssp2 Tx"},
{"ssp2 Tx", NULL, "codec_out0"},
{"ssp2 Tx", NULL, "codec_out1"},
@@ -64,18 +172,6 @@ static const struct snd_soc_dapm_route byt_rt5651_intmic_in1_map[] = {
{"IN1P", NULL, "Internal Mic"},
};
-enum {
- BYT_RT5651_DMIC1_MAP,
- BYT_RT5651_DMIC2_MAP,
- BYT_RT5651_IN1_MAP,
-};
-
-#define BYT_RT5651_MAP(quirk) ((quirk) & 0xff)
-#define BYT_RT5651_DMIC_EN BIT(16)
-
-static unsigned long byt_rt5651_quirk = BYT_RT5651_DMIC1_MAP |
- BYT_RT5651_DMIC_EN;
-
static const struct snd_kcontrol_new byt_rt5651_controls[] = {
SOC_DAPM_PIN_SWITCH("Headphone"),
SOC_DAPM_PIN_SWITCH("Headset Mic"),
@@ -100,9 +196,26 @@ static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
return ret;
}
- ret = snd_soc_dai_set_pll(codec_dai, 0, RT5651_PLL1_S_BCLK1,
- params_rate(params) * 50,
- params_rate(params) * 512);
+ if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) {
+ /* 2x25 bit slots on SSP2 */
+ ret = snd_soc_dai_set_pll(codec_dai, 0,
+ RT5651_PLL1_S_BCLK1,
+ params_rate(params) * 50,
+ params_rate(params) * 512);
+ } else {
+ if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) {
+ ret = snd_soc_dai_set_pll(codec_dai, 0,
+ RT5651_PLL1_S_MCLK,
+ 25000000,
+ params_rate(params) * 512);
+ } else {
+ ret = snd_soc_dai_set_pll(codec_dai, 0,
+ RT5651_PLL1_S_MCLK,
+ 19200000,
+ params_rate(params) * 512);
+ }
+ }
+
if (ret < 0) {
dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
return ret;
@@ -111,20 +224,35 @@ static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
return 0;
}
+static int byt_rt5651_quirk_cb(const struct dmi_system_id *id)
+{
+ byt_rt5651_quirk = (unsigned long)id->driver_data;
+ return 1;
+}
+
static const struct dmi_system_id byt_rt5651_quirk_table[] = {
+ {
+ .callback = byt_rt5651_quirk_cb,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Circuitco"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Minnowboard Max B3 PLATFORM"),
+ },
+ .driver_data = (void *)(BYT_RT5651_DMIC_MAP |
+ BYT_RT5651_DMIC_EN),
+ },
{}
};
static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
{
- int ret;
struct snd_soc_card *card = runtime->card;
+ struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
const struct snd_soc_dapm_route *custom_map;
int num_routes;
+ int ret;
card->dapm.idle_bias_off = true;
- dmi_check_system(byt_rt5651_quirk_table);
switch (BYT_RT5651_MAP(byt_rt5651_quirk)) {
case BYT_RT5651_IN1_MAP:
custom_map = byt_rt5651_intmic_in1_map;
@@ -147,6 +275,30 @@ static int byt_rt5651_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_rt5651_quirk & BYT_RT5651_MCLK_EN) {
+ /*
+ * 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_rt5651_quirk & BYT_RT5651_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;
}
@@ -292,13 +444,66 @@ static struct snd_soc_card byt_rt5651_card = {
.fully_routed = true,
};
+static char byt_rt5651_codec_name[16]; /* i2c-<HID>:00 with HID being 8 chars */
+
static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
{
+ struct byt_rt5651_private *priv;
+ struct sst_acpi_mach *mach;
+ const char *i2c_name = NULL;
int ret_val = 0;
+ int dai_index;
+ int i;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
+ if (!priv)
+ return -ENOMEM;
/* register the soc card */
byt_rt5651_card.dev = &pdev->dev;
+ mach = byt_rt5651_card.dev->platform_data;
+ snd_soc_card_set_drvdata(&byt_rt5651_card, priv);
+
+ /* fix index of codec dai */
+ dai_index = MERR_DPCM_COMPR + 1;
+ for (i = 0; i < ARRAY_SIZE(byt_rt5651_dais); i++) {
+ if (!strcmp(byt_rt5651_dais[i].codec_name, "i2c-10EC5651:00")) {
+ dai_index = i;
+ break;
+ }
+ }
+
+ /* fixup codec name based on HID */
+ i2c_name = sst_acpi_find_name_from_hid(mach->id);
+ if (i2c_name) {
+ snprintf(byt_rt5651_codec_name, sizeof(byt_rt5651_codec_name),
+ "%s%s", "i2c-", i2c_name);
+
+ byt_rt5651_dais[dai_index].codec_name = byt_rt5651_codec_name;
+ }
+
+ /* check quirks before creating card */
+ dmi_check_system(byt_rt5651_quirk_table);
+ log_quirks(&pdev->dev);
+
+ if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) {
+ 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));
+ /*
+ * Fall back to bit clock usage for -ENOENT (clock not
+ * available likely due to missing dependencies), bail
+ * for all other errors, including -EPROBE_DEFER
+ */
+ if (ret_val != -ENOENT)
+ return ret_val;
+ byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN;
+ }
+ }
+
ret_val = devm_snd_soc_register_card(&pdev->dev, &byt_rt5651_card);
if (ret_val) {