ASoC: rt5514: The DSP clock can be calibrated by the other clock source

Add the option for the DSP clock that can be calibrated by the other clock
source.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/rt5514.h b/include/sound/rt5514.h
index ef18494769ee1d9be57a2e973af3417e5df57ce4..64d027dbaaca9637cb230e3de22c153bbb4b26b6 100644 (file)
--- a/include/sound/rt5514.h
+++ b/include/sound/rt5514.h
@@ -14,6 +14,8 @@
 
 struct rt5514_platform_data {
        unsigned int dmic_init_delay;
+       const char *dsp_calib_clk_name;
+       unsigned int dsp_calib_clk_rate;
 };
 
 #endif

diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 12f2ecf3a4feeb3a6133012b33b5b10cad33999f..b90d6d5d7ff819df6b0a61f0803c9ad8dea4195e 100644 (file)
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -370,6 +370,7 @@ int rt5514_spi_burst_read(unsigned int addr, u8 *rxbuf, size_t len)
 
        return true;
 }
+EXPORT_SYMBOL_GPL(rt5514_spi_burst_read);
 
 /**
  * rt5514_spi_burst_write - Write data to SPI by rt5514 address.

diff --git a/sound/soc/codecs/rt5514.c b/sound/soc/codecs/rt5514.c
index 2a5b5d74e69714eeb966c6fc793021fcb7cd3a13..61ccbc62125b00fb5470d919b1e976cce49f2bab 100644 (file)
--- a/sound/soc/codecs/rt5514.c
+++ b/sound/soc/codecs/rt5514.c
@@ -295,6 +295,33 @@ static int rt5514_dsp_voice_wake_up_get(struct snd_kcontrol *kcontrol,
        return 0;
 }
 
+static int rt5514_calibration(struct rt5514_priv *rt5514, bool on)
+{
+       if (on) {
+               regmap_write(rt5514->regmap, RT5514_ANA_CTRL_PLL3, 0x0000000a);
+               regmap_update_bits(rt5514->regmap, RT5514_PLL_SOURCE_CTRL, 0xf,
+                       0xa);
+               regmap_update_bits(rt5514->regmap, RT5514_PWR_ANA1, 0x301,
+                       0x301);
+               regmap_write(rt5514->regmap, RT5514_PLL3_CALIB_CTRL4,
+                       0x80000000 | rt5514->pll3_cal_value);
+               regmap_write(rt5514->regmap, RT5514_PLL3_CALIB_CTRL1,
+                       0x8bb80800);
+               regmap_update_bits(rt5514->regmap, RT5514_PLL3_CALIB_CTRL5,
+                       0xc0000000, 0x80000000);
+               regmap_update_bits(rt5514->regmap, RT5514_PLL3_CALIB_CTRL5,
+                       0xc0000000, 0xc0000000);
+       } else {
+               regmap_update_bits(rt5514->regmap, RT5514_PLL3_CALIB_CTRL5,
+                       0xc0000000, 0x40000000);
+               regmap_update_bits(rt5514->regmap, RT5514_PWR_ANA1, 0x301, 0);
+               regmap_update_bits(rt5514->regmap, RT5514_PLL_SOURCE_CTRL, 0xf,
+                       0x4);
+       }
+
+       return 0;
+}
+
 static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol)
 {
@@ -302,6 +329,7 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
        struct rt5514_priv *rt5514 = snd_soc_component_get_drvdata(component);
        struct snd_soc_codec *codec = rt5514->codec;
        const struct firmware *fw = NULL;
+       u8 buf[8];
 
        if (ucontrol->value.integer.value[0] == rt5514->dsp_enabled)
                return 0;
@@ -310,6 +338,35 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
                rt5514->dsp_enabled = ucontrol->value.integer.value[0];
 
                if (rt5514->dsp_enabled) {
+                       if (rt5514->pdata.dsp_calib_clk_name &&
+                               !IS_ERR(rt5514->dsp_calib_clk)) {
+                               if (clk_set_rate(rt5514->dsp_calib_clk,
+                                       rt5514->pdata.dsp_calib_clk_rate))
+                                       dev_err(codec->dev,
+                                               "Can't set rate for mclk");
+
+                               if (clk_prepare_enable(rt5514->dsp_calib_clk))
+                                       dev_err(codec->dev,
+                                               "Can't enable dsp_calib_clk");
+
+                               rt5514_calibration(rt5514, true);
+
+                               msleep(20);
+#if IS_ENABLED(CONFIG_SND_SOC_RT5514_SPI)
+                               rt5514_spi_burst_read(RT5514_PLL3_CALIB_CTRL6 |
+                                       RT5514_DSP_MAPPING,
+                                       (u8 *)&buf, sizeof(buf));
+#else
+                               dev_err(codec->dev, "There is no SPI driver for"
+                                       " loading the firmware\n");
+#endif
+                               rt5514->pll3_cal_value = buf[0] | buf[1] << 8 |
+                                       buf[2] << 16 | buf[3] << 24;
+
+                               rt5514_calibration(rt5514, false);
+                               clk_disable_unprepare(rt5514->dsp_calib_clk);
+                       }
+
                        rt5514_enable_dsp_prepare(rt5514);
 
                        request_firmware(&fw, RT5514_FIRMWARE1, codec->dev);
@@ -341,6 +398,20 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
                        /* DSP run */
                        regmap_write(rt5514->i2c_regmap, 0x18002f00,
                                0x00055148);
+
+                       if (rt5514->pdata.dsp_calib_clk_name &&
+                               !IS_ERR(rt5514->dsp_calib_clk)) {
+                               msleep(20);
+
+                               regmap_write(rt5514->i2c_regmap, 0x1800211c,
+                                       rt5514->pll3_cal_value);
+                               regmap_write(rt5514->i2c_regmap, 0x18002124,
+                                       0x00220012);
+                               regmap_write(rt5514->i2c_regmap, 0x18002124,
+                                       0x80220042);
+                               regmap_write(rt5514->i2c_regmap, 0x18002124,
+                                       0xe0220042);
+                       }
                } else {
                        regmap_multi_reg_write(rt5514->i2c_regmap,
                                rt5514_i2c_patch, ARRAY_SIZE(rt5514_i2c_patch));
@@ -1024,12 +1095,22 @@ static int rt5514_set_bias_level(struct snd_soc_codec *codec,
 static int rt5514_probe(struct snd_soc_codec *codec)
 {
        struct rt5514_priv *rt5514 = snd_soc_codec_get_drvdata(codec);
+       struct platform_device *pdev = container_of(codec->dev,
+                                                  struct platform_device, dev);
 
        rt5514->mclk = devm_clk_get(codec->dev, "mclk");
        if (PTR_ERR(rt5514->mclk) == -EPROBE_DEFER)
                return -EPROBE_DEFER;
 
+       if (rt5514->pdata.dsp_calib_clk_name) {
+               rt5514->dsp_calib_clk = devm_clk_get(&pdev->dev,
+                               rt5514->pdata.dsp_calib_clk_name);
+               if (PTR_ERR(rt5514->dsp_calib_clk) == -EPROBE_DEFER)
+                       return -EPROBE_DEFER;
+       }
+
        rt5514->codec = codec;
+       rt5514->pll3_cal_value = 0x0078b000;
 
        return 0;
 }
@@ -1147,6 +1228,10 @@ static int rt5514_parse_dp(struct rt5514_priv *rt5514, struct device *dev)
 {
        device_property_read_u32(dev, "realtek,dmic-init-delay-ms",
                &rt5514->pdata.dmic_init_delay);
+       device_property_read_string(dev, "realtek,dsp-calib-clk-name",
+               &rt5514->pdata.dsp_calib_clk_name);
+       device_property_read_u32(dev, "realtek,dsp-calib-clk-rate",
+               &rt5514->pdata.dsp_calib_clk_rate);
 
        return 0;
 }

diff --git a/sound/soc/codecs/rt5514.h b/sound/soc/codecs/rt5514.h
index 2dc40e6d8b3f69835ded69ac71012cb765ac0a36..f0f3400ce6b15174dc5037274f372c615f8fa3d5 100644 (file)
--- a/sound/soc/codecs/rt5514.h
+++ b/sound/soc/codecs/rt5514.h
@@ -34,7 +34,9 @@
 #define RT5514_CLK_CTRL1                       0x2104
 #define RT5514_CLK_CTRL2                       0x2108
 #define RT5514_PLL3_CALIB_CTRL1                        0x2110
+#define RT5514_PLL3_CALIB_CTRL4                        0x2120
 #define RT5514_PLL3_CALIB_CTRL5                        0x2124
+#define RT5514_PLL3_CALIB_CTRL6                        0x2128
 #define RT5514_DELAY_BUF_CTRL1                 0x2140
 #define RT5514_DELAY_BUF_CTRL3                 0x2148
 #define RT5514_ASRC_IN_CTRL1                   0x2180
@@ -272,7 +274,7 @@ struct rt5514_priv {
        struct rt5514_platform_data pdata;
        struct snd_soc_codec *codec;
        struct regmap *i2c_regmap, *regmap;
-       struct clk *mclk;
+       struct clk *mclk, *dsp_calib_clk;
        int sysclk;
        int sysclk_src;
        int lrck;
@@ -281,6 +283,7 @@ struct rt5514_priv {
        int pll_in;
        int pll_out;
        int dsp_enabled;
+       unsigned int pll3_cal_value;
 };
 
 #endif /* __RT5514_H__ */