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Message-Id: <20170806123555.5124-14-hdegoede@redhat.com>
Date: Sun, 6 Aug 2017 14:35:50 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>,
Wolfram Sang <wsa@...-dreams.de>,
Sebastian Reichel <sre@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Guenter Roeck <linux@...ck-us.net>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: Hans de Goede <hdegoede@...hat.com>,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-i2c@...r.kernel.org, Liam Breck <liam@...workimprov.net>,
Tony Lindgren <tony@...mide.com>, linux-pm@...r.kernel.org,
devel@...verdev.osuosl.org
Subject: [PATCH 13/18] power: supply: bq24190_charger: Export 5V boost converter as regulator
Register the 5V boost converter as a regulator named
"regulator-bq24190-usb-vbus". Note the name includes "bq24190" because
the bq24190 family is also used on ACPI devices where there are no
device-tree phandles, so regulator_get will fallback to the name and thus
it must be unique on the system.
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
drivers/power/supply/bq24190_charger.c | 121 +++++++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index d5a707e14526..f25ea9c4acca 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -16,6 +16,8 @@
#include <linux/of_device.h>
#include <linux/pm_runtime.h>
#include <linux/power_supply.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
#include <linux/workqueue.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
@@ -504,6 +506,121 @@ static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {}
#endif
+#ifdef CONFIG_REGULATOR
+static int bq24190_vbus_enable(struct regulator_dev *dev)
+{
+ struct bq24190_dev_info *bdi = rdev_get_drvdata(dev);
+ int ret;
+
+ ret = pm_runtime_get_sync(bdi->dev);
+ if (ret < 0) {
+ dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
+ pm_runtime_put_noidle(bdi->dev);
+ return ret;
+ }
+
+ ret = bq24190_write_mask(bdi, BQ24190_REG_POC,
+ BQ24190_REG_POC_CHG_CONFIG_MASK,
+ BQ24190_REG_POC_CHG_CONFIG_SHIFT,
+ BQ24190_REG_POC_CHG_CONFIG_OTG);
+
+ pm_runtime_mark_last_busy(bdi->dev);
+ pm_runtime_put_autosuspend(bdi->dev);
+
+ return ret;
+}
+
+static int bq24190_vbus_disable(struct regulator_dev *dev)
+{
+ struct bq24190_dev_info *bdi = rdev_get_drvdata(dev);
+ int ret;
+
+ ret = pm_runtime_get_sync(bdi->dev);
+ if (ret < 0) {
+ dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
+ pm_runtime_put_noidle(bdi->dev);
+ return ret;
+ }
+
+ ret = bq24190_write_mask(bdi, BQ24190_REG_POC,
+ BQ24190_REG_POC_CHG_CONFIG_MASK,
+ BQ24190_REG_POC_CHG_CONFIG_SHIFT,
+ BQ24190_REG_POC_CHG_CONFIG_CHARGE);
+
+ pm_runtime_mark_last_busy(bdi->dev);
+ pm_runtime_put_autosuspend(bdi->dev);
+
+ return ret;
+}
+
+static int bq24190_vbus_is_enabled(struct regulator_dev *dev)
+{
+ struct bq24190_dev_info *bdi = rdev_get_drvdata(dev);
+ int ret;
+ u8 val;
+
+ ret = pm_runtime_get_sync(bdi->dev);
+ if (ret < 0) {
+ dev_warn(bdi->dev, "pm_runtime_get failed: %i\n", ret);
+ pm_runtime_put_noidle(bdi->dev);
+ return ret;
+ }
+
+ ret = bq24190_read_mask(bdi, BQ24190_REG_POC,
+ BQ24190_REG_POC_CHG_CONFIG_MASK,
+ BQ24190_REG_POC_CHG_CONFIG_SHIFT, &val);
+
+ pm_runtime_mark_last_busy(bdi->dev);
+ pm_runtime_put_autosuspend(bdi->dev);
+
+ return ret ? ret : val == BQ24190_REG_POC_CHG_CONFIG_OTG;
+}
+
+static const struct regulator_ops bq24190_vbus_ops = {
+ .enable = bq24190_vbus_enable,
+ .disable = bq24190_vbus_disable,
+ .is_enabled = bq24190_vbus_is_enabled,
+};
+
+static const struct regulator_desc bq24190_vbus_desc = {
+ .name = "regulator-bq24190-usb-vbus",
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .ops = &bq24190_vbus_ops,
+ .fixed_uV = 5000000,
+ .n_voltages = 1,
+};
+
+static const struct regulator_init_data bq24190_vbus_init_data = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+};
+
+static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi)
+{
+ struct regulator_config cfg = { };
+ struct regulator_dev *reg;
+ int ret = 0;
+
+ cfg.dev = bdi->dev;
+ cfg.init_data = &bq24190_vbus_init_data;
+ cfg.driver_data = bdi;
+ reg = devm_regulator_register(bdi->dev, &bq24190_vbus_desc, &cfg);
+ if (IS_ERR(reg)) {
+ ret = PTR_ERR(reg);
+ dev_err(bdi->dev, "Can't register regulator: %d\n", ret);
+ }
+
+ return ret;
+}
+#else
+static int bq24190_register_vbus_regulator(struct bq24190_dev_info *bdi)
+{
+ return 0;
+}
+#endif
+
/*
* According to the "Host Mode and default Mode" section of the
* manual, a write to any register causes the bq24190 to switch
@@ -1530,6 +1647,10 @@ static int bq24190_probe(struct i2c_client *client,
goto out_pmrt;
}
+ ret = bq24190_register_vbus_regulator(bdi);
+ if (ret < 0)
+ goto out_pmrt;
+
ret = bq24190_hw_init(bdi);
if (ret < 0) {
dev_err(dev, "Hardware init failed\n");
--
2.13.3
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