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From: Leonard Crestez <leonard.crestez@nxp.com>
To: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
	Lee Jones <lee.jones@linaro.org>, Mark Brown <broonie@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Aisheng Dong <aisheng.dong@nxp.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	Angus Ainslie <angus@akkea.ca>, Rob Herring <robh+dt@kernel.org>,
	dl-linux-imx <linux-imx@nxp.com>,
	"kernel@pengutronix.de" <kernel@pengutronix.de>,
	Fabio Estevam <fabio.estevam@nxp.com>,
	Robin Gong <yibin.gong@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v2 3/3] mfd: bd718x7: Make power button press duration configurable
Date: Tue, 21 May 2019 20:41:14 +0000
Message-ID: <bada813d7c3818f86851e9a31b19a7251da441f5.1558471150.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1558471150.git.leonard.crestez@nxp.com>

Allow overwriting the values in BD718XX_REG_PWRONCONFIG0 and
BD718XX_REG_PWRONCONFIG1 via devicetree. Read values in milliseconds and
attempt to round them to something supported by the hardware.

Keep existing values (from bootloader or OTP) if property is not
present.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-By: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
 drivers/mfd/rohm-bd718x7.c | 42 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/mfd/rohm-bd718x7.c b/drivers/mfd/rohm-bd718x7.c
index cdbef83884f0..c061c3f421fc 100644
--- a/drivers/mfd/rohm-bd718x7.c
+++ b/drivers/mfd/rohm-bd718x7.c
@@ -79,10 +79,48 @@ static const struct regmap_config bd718xx_regmap_config = {
 	.volatile_table = &volatile_regs,
 	.max_register = BD718XX_MAX_REGISTER - 1,
 	.cache_type = REGCACHE_RBTREE,
 };
 
+static int bd718xx_init_press_duration(struct bd718xx *bd718xx)
+{
+	struct device* dev = bd718xx->dev;
+	u32 short_press_ms, long_press_ms;
+	u32 short_press_value, long_press_value;
+	int ret;
+
+	ret = of_property_read_u32(dev->of_node, "rohm,short-press-ms",
+				   &short_press_ms);
+	if (!ret) {
+		short_press_value = min(15u, (short_press_ms + 250) / 500);
+		ret = regmap_update_bits(bd718xx->regmap,
+					 BD718XX_REG_PWRONCONFIG0,
+					 BD718XX_PWRBTN_PRESS_DURATION_MASK,
+					 short_press_value);
+		if (ret) {
+			dev_err(dev, "Failed to init pwron short press\n");
+			return ret;
+		}
+	}
+
+	ret = of_property_read_u32(dev->of_node, "rohm,long-press-ms",
+				   &long_press_ms);
+	if (!ret) {
+		long_press_value = min(15u, (long_press_ms + 500) / 1000);
+		ret = regmap_update_bits(bd718xx->regmap,
+					 BD718XX_REG_PWRONCONFIG1,
+					 BD718XX_PWRBTN_PRESS_DURATION_MASK,
+					 long_press_value);
+		if (ret) {
+			dev_err(dev, "Failed to init pwron long press\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 static int bd718xx_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
 	struct bd718xx *bd718xx;
 	int ret;
@@ -115,10 +153,14 @@ static int bd718xx_i2c_probe(struct i2c_client *i2c,
 	if (ret) {
 		dev_err(&i2c->dev, "Failed to add irq_chip\n");
 		return ret;
 	}
 
+	ret = bd718xx_init_press_duration(bd718xx);
+	if (ret)
+		return ret;
+
 	ret = regmap_irq_get_virq(bd718xx->irq_data, BD718XX_INT_PWRBTN_S);
 
 	if (ret < 0) {
 		dev_err(&i2c->dev, "Failed to get the IRQ\n");
 		return ret;
-- 
2.17.1


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  parent reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-21 20:41 [PATCH v2 0/3] mfd: bd718x7: Set button press duration via dt only Leonard Crestez
2019-05-21 20:41 ` [PATCH v2 1/3] mfd: bd718x7: Remove hardcoded config for button press duration Leonard Crestez
2019-06-03 12:51   ` Lee Jones
2019-05-21 20:41 ` [PATCH v2 2/3] dt-bindings: mfd: Document short/long press duration for bd718x7 Leonard Crestez
2019-06-03 12:51   ` Lee Jones
2019-06-14 16:42   ` Rob Herring
2019-05-21 20:41 ` Leonard Crestez [this message]
2019-06-03 12:51   ` [PATCH v2 3/3] mfd: bd718x7: Make power button press duration configurable Lee Jones

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