forked from Minki/linux
Merge remote-tracking branch 'asoc/topic/tas5086' into asoc-next
This commit is contained in:
Mark Brown
commit
7524be376d
@ -37,6 +37,7 @@
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_gpio.h>
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#include <sound/pcm.h>
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@ -244,6 +245,8 @@ struct tas5086_private {
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unsigned int mclk, sclk;
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unsigned int format;
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bool deemph;
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unsigned int charge_period;
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unsigned int pwm_start_mid_z;
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/* Current sample rate for de-emphasis control */
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int rate;
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/* GPIO driving Reset pin, if any */
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@ -456,6 +459,75 @@ static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
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return regmap_write(priv->regmap, TAS5086_SOFT_MUTE, val);
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}
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static void tas5086_reset(struct tas5086_private *priv)
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{
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if (gpio_is_valid(priv->gpio_nreset)) {
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/* Reset codec - minimum assertion time is 400ns */
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gpio_direction_output(priv->gpio_nreset, 0);
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udelay(1);
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gpio_set_value(priv->gpio_nreset, 1);
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/* Codec needs ~15ms to wake up */
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msleep(15);
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}
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}
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/* charge period values in microseconds */
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static const int tas5086_charge_period[] = {
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13000, 16900, 23400, 31200, 41600, 54600, 72800, 96200,
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130000, 156000, 234000, 312000, 416000, 546000, 728000, 962000,
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1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000,
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};
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static int tas5086_init(struct device *dev, struct tas5086_private *priv)
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{
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int ret, i;
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/*
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* If any of the channels is configured to start in Mid-Z mode,
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* configure 'part 1' of the PWM starts to use Mid-Z, and tell
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* all configured mid-z channels to start start under 'part 1'.
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*/
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if (priv->pwm_start_mid_z)
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regmap_write(priv->regmap, TAS5086_PWM_START,
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TAS5086_PWM_START_MIDZ_FOR_START_1 |
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priv->pwm_start_mid_z);
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/* lookup and set split-capacitor charge period */
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if (priv->charge_period == 0) {
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regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0);
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} else {
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i = index_in_array(tas5086_charge_period,
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ARRAY_SIZE(tas5086_charge_period),
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priv->charge_period);
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if (i >= 0)
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regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,
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i + 0x08);
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else
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dev_warn(dev,
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"Invalid split-cap charge period of %d ns.\n",
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priv->charge_period);
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}
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/* enable factory trim */
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ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00);
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if (ret < 0)
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return ret;
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/* start all channels */
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ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);
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if (ret < 0)
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return ret;
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/* mute all channels for now */
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ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,
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TAS5086_SOFT_MUTE_ALL);
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if (ret < 0)
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return ret;
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return 0;
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}
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/* TAS5086 controls */
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static const DECLARE_TLV_DB_SCALE(tas5086_dac_tlv, -10350, 50, 1);
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@ -691,14 +763,39 @@ static struct snd_soc_dai_driver tas5086_dai = {
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};
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#ifdef CONFIG_PM
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static int tas5086_soc_suspend(struct snd_soc_codec *codec)
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{
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struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
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int ret;
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/* Shut down all channels */
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ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x60);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int tas5086_soc_resume(struct snd_soc_codec *codec)
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{
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struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
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int ret;
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/* Restore codec state */
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return regcache_sync(priv->regmap);
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tas5086_reset(priv);
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regcache_mark_dirty(priv->regmap);
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ret = tas5086_init(codec->dev, priv);
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if (ret < 0)
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return ret;
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ret = regcache_sync(priv->regmap);
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if (ret < 0)
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return ret;
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return 0;
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}
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#else
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#define tas5086_soc_suspend NULL
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#define tas5086_soc_resume NULL
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#endif /* CONFIG_PM */
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@ -710,23 +807,19 @@ static const struct of_device_id tas5086_dt_ids[] = {
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MODULE_DEVICE_TABLE(of, tas5086_dt_ids);
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#endif
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/* charge period values in microseconds */
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static const int tas5086_charge_period[] = {
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13000, 16900, 23400, 31200, 41600, 54600, 72800, 96200,
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130000, 156000, 234000, 312000, 416000, 546000, 728000, 962000,
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1300000, 169000, 2340000, 3120000, 4160000, 5460000, 7280000, 9620000,
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};
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static int tas5086_probe(struct snd_soc_codec *codec)
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{
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struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
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int charge_period = 1300000; /* hardware default is 1300 ms */
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u8 pwm_start_mid_z = 0;
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int i, ret;
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priv->pwm_start_mid_z = 0;
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priv->charge_period = 1300000; /* hardware default is 1300 ms */
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if (of_match_device(of_match_ptr(tas5086_dt_ids), codec->dev)) {
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struct device_node *of_node = codec->dev->of_node;
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of_property_read_u32(of_node, "ti,charge-period", &charge_period);
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of_property_read_u32(of_node, "ti,charge-period",
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&priv->charge_period);
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for (i = 0; i < 6; i++) {
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char name[25];
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@ -735,43 +828,11 @@ static int tas5086_probe(struct snd_soc_codec *codec)
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"ti,mid-z-channel-%d", i + 1);
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if (of_get_property(of_node, name, NULL) != NULL)
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pwm_start_mid_z |= 1 << i;
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priv->pwm_start_mid_z |= 1 << i;
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}
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}
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/*
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* If any of the channels is configured to start in Mid-Z mode,
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* configure 'part 1' of the PWM starts to use Mid-Z, and tell
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* all configured mid-z channels to start start under 'part 1'.
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*/
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if (pwm_start_mid_z)
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regmap_write(priv->regmap, TAS5086_PWM_START,
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TAS5086_PWM_START_MIDZ_FOR_START_1 |
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pwm_start_mid_z);
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/* lookup and set split-capacitor charge period */
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if (charge_period == 0) {
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regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE, 0);
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} else {
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i = index_in_array(tas5086_charge_period,
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ARRAY_SIZE(tas5086_charge_period),
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charge_period);
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if (i >= 0)
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regmap_write(priv->regmap, TAS5086_SPLIT_CAP_CHARGE,
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i + 0x08);
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else
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dev_warn(codec->dev,
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"Invalid split-cap charge period of %d ns.\n",
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charge_period);
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}
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/* enable factory trim */
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ret = regmap_write(priv->regmap, TAS5086_OSC_TRIM, 0x00);
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if (ret < 0)
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return ret;
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/* start all channels */
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ret = regmap_write(priv->regmap, TAS5086_SYS_CONTROL_2, 0x20);
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ret = tas5086_init(codec->dev, priv);
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if (ret < 0)
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return ret;
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@ -780,12 +841,6 @@ static int tas5086_probe(struct snd_soc_codec *codec)
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if (ret < 0)
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return ret;
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/* mute all channels for now */
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ret = regmap_write(priv->regmap, TAS5086_SOFT_MUTE,
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TAS5086_SOFT_MUTE_ALL);
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if (ret < 0)
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return ret;
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return 0;
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}
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@ -803,6 +858,7 @@ static int tas5086_remove(struct snd_soc_codec *codec)
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static struct snd_soc_codec_driver soc_codec_dev_tas5086 = {
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.probe = tas5086_probe,
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.remove = tas5086_remove,
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.suspend = tas5086_soc_suspend,
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.resume = tas5086_soc_resume,
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.controls = tas5086_controls,
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.num_controls = ARRAY_SIZE(tas5086_controls),
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@ -862,17 +918,8 @@ static int tas5086_i2c_probe(struct i2c_client *i2c,
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if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
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gpio_nreset = -EINVAL;
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if (gpio_is_valid(gpio_nreset)) {
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/* Reset codec - minimum assertion time is 400ns */
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gpio_direction_output(gpio_nreset, 0);
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udelay(1);
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gpio_set_value(gpio_nreset, 1);
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/* Codec needs ~15ms to wake up */
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msleep(15);
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}
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priv->gpio_nreset = gpio_nreset;
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tas5086_reset(priv);
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/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
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ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
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