Merge remote-tracking branches 'asoc/topic/rl6231' and 'asoc/topic/rt5514' into asoc-next

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

sound/soc/codecs/rl6231.c

@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 
+#include <linux/gcd.h>
 #include "rl6231.h"
 
 /**
@@ -106,6 +107,25 @@ static const struct pll_calc_map pll_preset_table[] = {
 	{19200000,  24576000,  3, 30, 3, false},
 };
 
+static unsigned int find_best_div(unsigned int in,
+	unsigned int max, unsigned int div)
+{
+	unsigned int d;
+
+	if (in <= max)
+		return 1;
+
+	d = in / max;
+	if (in % max)
+		d++;
+
+	while (div % d != 0)
+		d++;
+
+
+	return d;
+}
+
 /**
  * rl6231_pll_calc - Calcualte PLL M/N/K code.
  * @freq_in: external clock provided to codec.
@@ -120,9 +140,11 @@ int rl6231_pll_calc(const unsigned int freq_in,
 	const unsigned int freq_out, struct rl6231_pll_code *pll_code)
 {
 	int max_n = RL6231_PLL_N_MAX, max_m = RL6231_PLL_M_MAX;
-	int i, k, red, n_t, pll_out, in_t, out_t;
-	int n = 0, m = 0, m_t = 0;
-	int red_t = abs(freq_out - freq_in);
+	int i, k, n_t;
+	int k_t, min_k, max_k, n = 0, m = 0, m_t = 0;
+	unsigned int red, pll_out, in_t, out_t, div, div_t;
+	unsigned int red_t = abs(freq_out - freq_in);
+	unsigned int f_in, f_out, f_max;
 	bool bypass = false;
 
 	if (RL6231_PLL_INP_MAX < freq_in || RL6231_PLL_INP_MIN > freq_in)
@@ -140,39 +162,52 @@ int rl6231_pll_calc(const unsigned int freq_in,
 		}
 	}
 
-	k = 100000000 / freq_out - 2;
-	if (k > RL6231_PLL_K_MAX)
-		k = RL6231_PLL_K_MAX;
-	for (n_t = 0; n_t <= max_n; n_t++) {
-		in_t = freq_in / (k + 2);
-		pll_out = freq_out / (n_t + 2);
-		if (in_t < 0)
-			continue;
-		if (in_t == pll_out) {
-			bypass = true;
-			n = n_t;
-			goto code_find;
-		}
-		red = abs(in_t - pll_out);
-		if (red < red_t) {
-			bypass = true;
-			n = n_t;
-			m = m_t;
-			if (red == 0)
+	min_k = 80000000 / freq_out - 2;
+	max_k = 150000000 / freq_out - 2;
+	if (max_k > RL6231_PLL_K_MAX)
+		max_k = RL6231_PLL_K_MAX;
+	if (min_k > RL6231_PLL_K_MAX)
+		min_k = max_k = RL6231_PLL_K_MAX;
+	div_t = gcd(freq_in, freq_out);
+	f_max = 0xffffffff / RL6231_PLL_N_MAX;
+	div = find_best_div(freq_in, f_max, div_t);
+	f_in = freq_in / div;
+	f_out = freq_out / div;
+	k = min_k;
+	for (k_t = min_k; k_t <= max_k; k_t++) {
+		for (n_t = 0; n_t <= max_n; n_t++) {
+			in_t = f_in * (n_t + 2);
+			pll_out = f_out * (k_t + 2);
+			if (in_t == pll_out) {
+				bypass = true;
+				n = n_t;
+				k = k_t;
 				goto code_find;
-			red_t = red;
-		}
-		for (m_t = 0; m_t <= max_m; m_t++) {
-			out_t = in_t / (m_t + 2);
-			red = abs(out_t - pll_out);
+			}
+			out_t = in_t / (k_t + 2);
+			red = abs(f_out - out_t);
 			if (red < red_t) {
-				bypass = false;
+				bypass = true;
 				n = n_t;
-				m = m_t;
+				m = 0;
+				k = k_t;
 				if (red == 0)
 					goto code_find;
 				red_t = red;
 			}
+			for (m_t = 0; m_t <= max_m; m_t++) {
+				out_t = in_t / ((m_t + 2) * (k_t + 2));
+				red = abs(f_out - out_t);
+				if (red < red_t) {
+					bypass = false;
+					n = n_t;
+					m = m_t;
+					k = k_t;
+					if (red == 0)
+						goto code_find;
+					red_t = red;
+				}
+			}
 		}
 	}
 	pr_debug("Only get approximation about PLL\n");

sound/soc/codecs/rt5514-spi.c

@@ -381,6 +381,7 @@ 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.

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;
 }

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__ */