Merge tag 'asoc-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v4.8

Not really any framework work this time around (though we have seen one
of the Analog Devices drivers move more to the clock API which is good
to see) but rather a lot of new drivers:

 - Lots of updates for the Intel drivers, mostly board support and bug
   fixing, and to the NAU8825 driver.
 - Work on generalizing bits of simple-card to allow more code sharing
   with the Renesas rsrc-card (which can't use simple-card due to DPCM).
 - Removal of the Odroid X2 driver due to replacement with simple-card.
 - Support for several new Mediatek platforms and associated boards.
 - New drivers for Allwinner A10, Analog Devices ADAU7002, Broadcom
   Cygnus, Cirrus Logic CS35L33 and CS53L30, Maxim MAX8960 and MAX98504,
   Realtek RT5514 and Wolfson WM8758

1 files changed, 162 insertions, 89 deletions

diff --git a/sound/soc/codecs/adau17x1.c b/sound/soc/codecs/adau17x1.c
index fcf05b254ecd..439aa3ff1f99 100644
--- a/sound/soc/codecs/adau17x1.c
+++ b/sound/soc/codecs/adau17x1.c
@@ -9,6 +9,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <sound/core.h>
@@ -23,6 +24,7 @@
 
 #include "sigmadsp.h"
 #include "adau17x1.h"
+#include "adau-utils.h"
 
 static const char * const adau17x1_capture_mixer_boost_text[] = {
 	"Normal operation", "Boost Level 1", "Boost Level 2", "Boost Level 3",
@@ -302,6 +304,116 @@ bool adau17x1_has_dsp(struct adau *adau)
 }
 EXPORT_SYMBOL_GPL(adau17x1_has_dsp);
 
+static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
+	int source, unsigned int freq_in, unsigned int freq_out)
+{
+	struct snd_soc_codec *codec = dai->codec;
+	struct adau *adau = snd_soc_codec_get_drvdata(codec);
+	int ret;
+
+	if (freq_in < 8000000 || freq_in > 27000000)
+		return -EINVAL;
+
+	ret = adau_calc_pll_cfg(freq_in, freq_out, adau->pll_regs);
+	if (ret < 0)
+		return ret;
+
+	/* The PLL register is 6 bytes long and can only be written at once. */
+	ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
+			adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
+	if (ret)
+		return ret;
+
+	adau->pll_freq = freq_out;
+
+	return 0;
+}
+
+static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
+		int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
+	struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
+	bool is_pll;
+	bool was_pll;
+
+	switch (clk_id) {
+	case ADAU17X1_CLK_SRC_MCLK:
+		is_pll = false;
+		break;
+	case ADAU17X1_CLK_SRC_PLL_AUTO:
+		if (!adau->mclk)
+			return -EINVAL;
+		/* Fall-through */
+	case ADAU17X1_CLK_SRC_PLL:
+		is_pll = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (adau->clk_src) {
+	case ADAU17X1_CLK_SRC_MCLK:
+		was_pll = false;
+		break;
+	case ADAU17X1_CLK_SRC_PLL:
+	case ADAU17X1_CLK_SRC_PLL_AUTO:
+		was_pll = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	adau->sysclk = freq;
+
+	if (is_pll != was_pll) {
+		if (is_pll) {
+			snd_soc_dapm_add_routes(dapm,
+				&adau17x1_dapm_pll_route, 1);
+		} else {
+			snd_soc_dapm_del_routes(dapm,
+				&adau17x1_dapm_pll_route, 1);
+		}
+	}
+
+	adau->clk_src = clk_id;
+
+	return 0;
+}
+
+static int adau17x1_auto_pll(struct snd_soc_dai *dai,
+	struct snd_pcm_hw_params *params)
+{
+	struct adau *adau = snd_soc_dai_get_drvdata(dai);
+	unsigned int pll_rate;
+
+	switch (params_rate(params)) {
+	case 48000:
+	case 8000:
+	case 12000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 96000:
+		pll_rate = 48000 * 1024;
+		break;
+	case 44100:
+	case 7350:
+	case 11025:
+	case 14700:
+	case 22050:
+	case 29400:
+	case 88200:
+		pll_rate = 44100 * 1024;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return adau17x1_set_dai_pll(dai, ADAU17X1_PLL, ADAU17X1_PLL_SRC_MCLK,
+		clk_get_rate(adau->mclk), pll_rate);
+}
+
 static int adau17x1_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
@@ -311,10 +423,19 @@ static int adau17x1_hw_params(struct snd_pcm_substream *substream,
 	unsigned int freq;
 	int ret;
 
-	if (adau->clk_src == ADAU17X1_CLK_SRC_PLL)
+	switch (adau->clk_src) {
+	case ADAU17X1_CLK_SRC_PLL_AUTO:
+		ret = adau17x1_auto_pll(dai, params);
+		if (ret)
+			return ret;
+		/* Fall-through */
+	case ADAU17X1_CLK_SRC_PLL:
 		freq = adau->pll_freq;
-	else
+		break;
+	default:
 		freq = adau->sysclk;
+		break;
+	}
 
 	if (freq % params_rate(params) != 0)
 		return -EINVAL;
@@ -386,93 +507,6 @@ static int adau17x1_hw_params(struct snd_pcm_substream *substream,
 			ADAU17X1_SERIAL_PORT1_DELAY_MASK, val);
 }
 
-static int adau17x1_set_dai_pll(struct snd_soc_dai *dai, int pll_id,
-	int source, unsigned int freq_in, unsigned int freq_out)
-{
-	struct snd_soc_codec *codec = dai->codec;
-	struct adau *adau = snd_soc_codec_get_drvdata(codec);
-	unsigned int r, n, m, i, j;
-	unsigned int div;
-	int ret;
-
-	if (freq_in < 8000000 || freq_in > 27000000)
-		return -EINVAL;
-
-	if (!freq_out) {
-		r = 0;
-		n = 0;
-		m = 0;
-		div = 0;
-	} else {
-		if (freq_out % freq_in != 0) {
-			div = DIV_ROUND_UP(freq_in, 13500000);
-			freq_in /= div;
-			r = freq_out / freq_in;
-			i = freq_out % freq_in;
-			j = gcd(i, freq_in);
-			n = i / j;
-			m = freq_in / j;
-			div--;
-		} else {
-			r = freq_out / freq_in;
-			n = 0;
-			m = 0;
-			div = 0;
-		}
-		if (n > 0xffff || m > 0xffff || div > 3 || r > 8 || r < 2)
-			return -EINVAL;
-	}
-
-	adau->pll_regs[0] = m >> 8;
-	adau->pll_regs[1] = m & 0xff;
-	adau->pll_regs[2] = n >> 8;
-	adau->pll_regs[3] = n & 0xff;
-	adau->pll_regs[4] = (r << 3) | (div << 1);
-	if (m != 0)
-		adau->pll_regs[4] |= 1; /* Fractional mode */
-
-	/* The PLL register is 6 bytes long and can only be written at once. */
-	ret = regmap_raw_write(adau->regmap, ADAU17X1_PLL_CONTROL,
-			adau->pll_regs, ARRAY_SIZE(adau->pll_regs));
-	if (ret)
-		return ret;
-
-	adau->pll_freq = freq_out;
-
-	return 0;
-}
-
-static int adau17x1_set_dai_sysclk(struct snd_soc_dai *dai,
-		int clk_id, unsigned int freq, int dir)
-{
-	struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(dai->codec);
-	struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
-
-	switch (clk_id) {
-	case ADAU17X1_CLK_SRC_MCLK:
-	case ADAU17X1_CLK_SRC_PLL:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	adau->sysclk = freq;
-
-	if (adau->clk_src != clk_id) {
-		if (clk_id == ADAU17X1_CLK_SRC_PLL) {
-			snd_soc_dapm_add_routes(dapm,
-				&adau17x1_dapm_pll_route, 1);
-		} else {
-			snd_soc_dapm_del_routes(dapm,
-				&adau17x1_dapm_pll_route, 1);
-		}
-	}
-
-	adau->clk_src = clk_id;
-
-	return 0;
-}
-
 static int adau17x1_set_dai_fmt(struct snd_soc_dai *dai,
 		unsigned int fmt)
 {
@@ -857,6 +891,10 @@ int adau17x1_add_routes(struct snd_soc_codec *codec)
 		ret = snd_soc_dapm_add_routes(dapm, adau17x1_no_dsp_dapm_routes,
 			ARRAY_SIZE(adau17x1_no_dsp_dapm_routes));
 	}
+
+	if (adau->clk_src != ADAU17X1_CLK_SRC_MCLK)
+		snd_soc_dapm_add_routes(dapm, &adau17x1_dapm_pll_route, 1);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(adau17x1_add_routes);
@@ -879,6 +917,7 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
 	const char *firmware_name)
 {
 	struct adau *adau;
+	int ret;
 
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
@@ -887,6 +926,30 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
 	if (!adau)
 		return -ENOMEM;
 
+	adau->mclk = devm_clk_get(dev, "mclk");
+	if (IS_ERR(adau->mclk)) {
+		if (PTR_ERR(adau->mclk) != -ENOENT)
+			return PTR_ERR(adau->mclk);
+		/* Clock is optional (for the driver) */
+		adau->mclk = NULL;
+	} else if (adau->mclk) {
+		adau->clk_src = ADAU17X1_CLK_SRC_PLL_AUTO;
+
+		/*
+		 * Any valid PLL output rate will work at this point, use one
+		 * that is likely to be chosen later as well. The register will
+		 * be written when the PLL is powered up for the first time.
+		 */
+		ret = adau_calc_pll_cfg(clk_get_rate(adau->mclk), 48000 * 1024,
+				adau->pll_regs);
+		if (ret < 0)
+			return ret;
+
+		ret = clk_prepare_enable(adau->mclk);
+		if (ret)
+			return ret;
+	}
+
 	adau->regmap = regmap;
 	adau->switch_mode = switch_mode;
 	adau->type = type;
@@ -910,6 +973,16 @@ int adau17x1_probe(struct device *dev, struct regmap *regmap,
 }
 EXPORT_SYMBOL_GPL(adau17x1_probe);
 
+void adau17x1_remove(struct device *dev)
+{
+	struct adau *adau = dev_get_drvdata(dev);
+
+	snd_soc_unregister_codec(dev);
+	if (adau->mclk)
+		clk_disable_unprepare(adau->mclk);
+}
+EXPORT_SYMBOL_GPL(adau17x1_remove);
+
 MODULE_DESCRIPTION("ASoC ADAU1X61/ADAU1X81 common code");
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_LICENSE("GPL");