linux-kernel - [PATCH V10 4/9] mfd: pm8008: Add reset-gpios

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Message-ID: <1649939418-19861-5-git-send-email-quic_c_skakit@quicinc.com>
Date:   Thu, 14 Apr 2022 18:00:13 +0530
From:   Satya Priya <quic_c_skakit@...cinc.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Lee Jones <lee.jones@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <swboyd@...omium.org>,
        <quic_collinsd@...cinc.com>, <quic_subbaram@...cinc.com>,
        <quic_jprakash@...cinc.com>,
        Satya Priya <quic_c_skakit@...cinc.com>
Subject: [PATCH V10 4/9] mfd: pm8008: Add reset-gpios

Add the reset-gpio toggling in the pm8008_probe() to bring
pm8008 chip out of reset instead of doing it in DT node using
"output-high" property.

Signed-off-by: Satya Priya <quic_c_skakit@...cinc.com>
---
Changes in V10:
 - This has been split from [V9,3/6] as per comments here [1]
 [1] https://patchwork.kernel.org/project/linux-arm-msm/patch/1649166633-25872-4-git-send-email-quic_c_skakit@quicinc.com/#24803409

 drivers/mfd/qcom-pm8008.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/mfd/qcom-pm8008.c b/drivers/mfd/qcom-pm8008.c
index c472d7f..97a72da 100644
--- a/drivers/mfd/qcom-pm8008.c
+++ b/drivers/mfd/qcom-pm8008.c
@@ -4,6 +4,7 @@
  */
 
 #include <linux/bitops.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -57,6 +58,7 @@ enum {
 struct pm8008_data {
 	struct device *dev;
 	struct regmap *regmap;
+	struct gpio_desc *reset_gpio;
 	int irq;
 	struct regmap_irq_chip_data *irq_data;
 };
@@ -239,6 +241,13 @@ static int pm8008_probe(struct i2c_client *client)
 			dev_err(chip->dev, "Failed to probe irq periphs: %d\n", rc);
 	}
 
+	chip->reset_gpio = devm_gpiod_get(chip->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(chip->reset_gpio)) {
+		dev_err(chip->dev, "failed to acquire reset gpio\n");
+		return PTR_ERR(chip->reset_gpio);
+	}
+	gpiod_set_value(chip->reset_gpio, 1);
+
 	return devm_of_platform_populate(chip->dev);
 }
 
-- 
2.7.4