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Commit 39552d7a authored by Anatol Pomozov's avatar Anatol Pomozov Committed by Mark Brown
Browse files

ASoC: ts3a227e: Add dts property that allows to specify micbias voltage



The voltage controls key press threshold.

Signed-off-by: default avatarAnatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ddf9ea21
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+5 −0
Original line number Diff line number Diff line
@@ -13,6 +13,11 @@ Required properties:
 - interrupt-parent:	The parent interrupt controller
 - interrupts:		Interrupt number for /INT pin from the 227e

Optional properies:
 - ti,micbias:   Intended MICBIAS voltage (datasheet section 9.6.7).
      Select 0/1/2/3/4/5/6/7 to specify MACBIAS voltage
      2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V
      Default value is "1" (2.2V).

Examples:

+27 −0
Original line number Diff line number Diff line
@@ -79,6 +79,10 @@ static const int ts3a227e_buttons[] = {
/* TS3A227E_REG_SETTING_2 0x05 */
#define KP_ENABLE 0x04

/* TS3A227E_REG_SETTING_3 0x06 */
#define MICBIAS_SETTING_SFT (3)
#define MICBIAS_SETTING_MASK (0x7 << MICBIAS_SETTING_SFT)

/* TS3A227E_REG_ACCESSORY_STATUS  0x0b */
#define TYPE_3_POLE 0x01
#define TYPE_4_POLE_OMTP 0x02
@@ -248,6 +252,21 @@ static const struct regmap_config ts3a227e_regmap_config = {
	.num_reg_defaults = ARRAY_SIZE(ts3a227e_reg_defaults),
};

static int ts3a227e_parse_dt(struct ts3a227e *ts3a227e, struct device_node *np)
{
	u32 micbias;
	int err;

	err = of_property_read_u32(np, "ti,micbias", &micbias);
	if (!err) {
		regmap_update_bits(ts3a227e->regmap, TS3A227E_REG_SETTING_3,
			MICBIAS_SETTING_MASK,
			(micbias & 0x07) << MICBIAS_SETTING_SFT);
	}

	return 0;
}

static int ts3a227e_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
@@ -265,6 +284,14 @@ static int ts3a227e_i2c_probe(struct i2c_client *i2c,
	if (IS_ERR(ts3a227e->regmap))
		return PTR_ERR(ts3a227e->regmap);

	if (dev->of_node) {
		ret = ts3a227e_parse_dt(ts3a227e, dev->of_node);
		if (ret) {
			dev_err(dev, "Failed to parse device tree: %d\n", ret);
			return ret;
		}
	}

	ret = devm_request_threaded_irq(dev, i2c->irq, NULL, ts3a227e_interrupt,
					IRQF_TRIGGER_LOW | IRQF_ONESHOT,
					"TS3A227E", ts3a227e);