Merge remote-tracking branches 'asoc/topic/rl6231' and 'asoc/topic/rt5514' into asoc...
authorMark Brown <broonie@kernel.org>
Fri, 26 Jan 2018 15:27:28 +0000 (15:27 +0000)
committerMark Brown <broonie@kernel.org>
Fri, 26 Jan 2018 15:27:28 +0000 (15:27 +0000)
include/sound/rt5514.h
sound/soc/codecs/rl6231.c
sound/soc/codecs/rt5514-spi.c
sound/soc/codecs/rt5514.c
sound/soc/codecs/rt5514.h

index ef18494769ee1d9be57a2e973af3417e5df57ce4..64d027dbaaca9637cb230e3de22c153bbb4b26b6 100644 (file)
@@ -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
index 974a9040651db37da519ccb1e2cf5e2ff8d55ac2..7ef3b5476bcc2ecc3f291d151e99ce534230183e 100644 (file)
@@ -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");
index 64bf26cec20d535314551ae542f8c28ed25352dc..2144edca97b0959430be176feeec47ad0c6f265b 100644 (file)
@@ -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.
index 2dd6e9f990a4c4c7a2377c5f159987a046220b7a..198df016802f826dff3681d5f6496c4484d3e431 100644 (file)
@@ -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;
 }
index 2dc40e6d8b3f69835ded69ac71012cb765ac0a36..f0f3400ce6b15174dc5037274f372c615f8fa3d5 100644 (file)
@@ -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__ */