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From: Hans de Goede <hdegoede@redhat.com>
To: Darren Hart <dvhart@infradead.org>,
	Andy Shevchenko <andy@infradead.org>,
	Wolfram Sang <wsa@the-dreams.de>,
	Sebastian Reichel <sre@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Guenter Roeck <linux@roeck-us.net>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Hans de Goede <hdegoede@redhat.com>,
	platform-driver-x86@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
	Liam Breck <liam@networkimprov.net>,
	Tony Lindgren <tony@atomide.com>,
	linux-pm@vger.kernel.org, devel@driverdev.osuosl.org
Subject: [PATCH 15/18] power: supply: bq24190_charger: Get input_current_limit from our supplier
Date: Sun,  6 Aug 2017 14:35:52 +0200	[thread overview]
Message-ID: <20170806123555.5124-16-hdegoede@redhat.com> (raw)
In-Reply-To: <20170806123555.5124-1-hdegoede@redhat.com>

On some devices the USB Type-C port power (USB PD 2.0) negotiation is
done by a separate port-controller IC, while the current limit is
controlled through another (charger) IC.

It has been decided to model this by modelling the external Type-C
power brick (adapter/charger) as a power-supply class device which
supplies the charger-IC, with its voltage-now and current-max representing
the negotiated voltage and max current draw.

This commit adds support for this to the bq24190_charger driver by calling
power_supply_set_input_current_limit_from_supplier helper if the
"input-current-limit-from-supplier" device-property is set.

Note this replaces the functionality to get the current-limit from an
extcon device, which will be removed in a follow-up commit.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/power/supply/bq24190_charger.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index d78e2c6dc127..1f6424f0772f 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -161,6 +161,7 @@ struct bq24190_dev_info {
 	char				model_name[I2C_NAME_SIZE];
 	bool				initialized;
 	bool				irq_event;
+	bool				input_current_limit_from_supplier;
 	struct mutex			f_reg_lock;
 	u8				f_reg;
 	u8				ss_reg;
@@ -1137,6 +1138,14 @@ static int bq24190_charger_property_is_writeable(struct power_supply *psy,
 	return ret;
 }
 
+static void bq24190_charger_external_power_changed(struct power_supply *psy)
+{
+	struct bq24190_dev_info *bdi = power_supply_get_drvdata(psy);
+
+	if (bdi->input_current_limit_from_supplier)
+		power_supply_set_input_current_limit_from_supplier(psy);
+}
+
 static enum power_supply_property bq24190_charger_properties[] = {
 	POWER_SUPPLY_PROP_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_HEALTH,
@@ -1165,6 +1174,7 @@ static const struct power_supply_desc bq24190_charger_desc = {
 	.get_property		= bq24190_charger_get_property,
 	.set_property		= bq24190_charger_set_property,
 	.property_is_writeable	= bq24190_charger_property_is_writeable,
+	.external_power_changed	= bq24190_charger_external_power_changed,
 };
 
 /* Battery power supply property routines */
@@ -1654,6 +1664,10 @@ static int bq24190_probe(struct i2c_client *client,
 		return -EINVAL;
 	}
 
+	bdi->input_current_limit_from_supplier =
+		device_property_read_bool(dev,
+					  "input-current-limit-from-supplier");
+
 	/*
 	 * Devicetree platforms should get extcon via phandle (not yet supported).
 	 * On ACPI platforms, extcon clients may invoke us with:
-- 
2.13.3

  parent reply	other threads:[~2017-08-06 12:36 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-06 12:35 [PATCH 00/18] Hookup typec power-negotation to the PMIC and charger Hans de Goede
2017-08-06 12:35 ` [PATCH 01/18] staging: typec: tcpm: Add get_usb2_current_limit tcpc_dev callback Hans de Goede
2017-08-06 14:18   ` Guenter Roeck
2017-08-06 14:29     ` Hans de Goede
2017-08-06 14:52       ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 02/18] staging: typec: tcpm: Add extcon helper functions for USB2 current limit detect Hans de Goede
2017-08-06 14:07   ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 03/18] staging: typec: tcpm: Split tcpm code into tcpm-core.c and tcpm-helpers.c Hans de Goede
2017-08-06 12:35 ` [PATCH 04/18] staging: typec: tcpm: Add helpers for exporting current-limit through a psy Hans de Goede
2017-08-06 14:13   ` Guenter Roeck
2017-08-06 14:21     ` Hans de Goede
2017-08-06 14:41       ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 05/18] staging: typec: fusb302: Set max supply voltage to 5V Hans de Goede
2017-08-06 12:35 ` [PATCH 06/18] staging: typec: fusb302: Get max snk mv/ma/mw from device-properties Hans de Goede
2017-08-06 14:03   ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 07/18] staging: typec: fusb302: Use client->irq as irq if set Hans de Goede
2017-08-06 12:35 ` [PATCH 08/18] staging: typec: fusb302: Add support for USB2 charger detection through extcon Hans de Goede
2017-08-06 14:22   ` Guenter Roeck
2017-08-06 14:36     ` Hans de Goede
2017-08-06 14:58       ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 09/18] staging: typec: fusb302: Use tcpm_set_current_limit_psy Hans de Goede
2017-08-06 14:24   ` Guenter Roeck
2017-08-06 12:35 ` [PATCH 10/18] staging: typec: fusb302: Add support for fcs,vbus-regulator-name device-property Hans de Goede
2017-08-06 14:30   ` Guenter Roeck
2017-08-06 14:52     ` Hans de Goede
2017-08-06 15:20       ` Guenter Roeck
2017-08-06 15:44     ` Hans de Goede
2017-08-07 11:10       ` Mark Brown
2017-08-07 14:41         ` Hans de Goede
2017-08-07 15:41           ` Mark Brown
2017-08-07 19:20             ` Hans de Goede
2017-08-08  9:39               ` Mark Brown
     [not found]                 ` <0b75c318-0f71-c536-7c7f-9ba16b215690@redhat.com>
     [not found]                   ` <20170808144217.c2fm25uge75p4lo2@sirena.org.uk>
2017-08-08 20:53                     ` Hans de Goede
2017-08-06 12:35 ` [PATCH 11/18] power: supply: Fix power_supply_am_i_supplied to return -ENODEV when apropriate Hans de Goede
2017-08-06 14:31   ` Guenter Roeck
2017-08-06 14:54     ` Hans de Goede
2017-08-06 12:35 ` [PATCH 12/18] power: supply: Add power_supply_set_input_current_limit_from_supplier helper Hans de Goede
2017-08-06 12:35 ` [PATCH 13/18] power: supply: bq24190_charger: Export 5V boost converter as regulator Hans de Goede
2017-08-08  4:15   ` Tony Lindgren
2017-08-08  8:39   ` Liam Breck
2017-08-08  9:00     ` Hans de Goede
2017-08-08 18:57       ` Liam Breck
2017-08-08 21:09         ` Hans de Goede
2017-08-06 12:35 ` [PATCH 14/18] power: supply: bq24190_charger: Add input_current_limit property Hans de Goede
2017-08-06 12:35 ` Hans de Goede [this message]
2017-08-08  8:24   ` [PATCH 15/18] power: supply: bq24190_charger: Get input_current_limit from our supplier Liam Breck
2017-08-08  9:11     ` Hans de Goede
2017-08-06 12:35 ` [PATCH 16/18] power: supply: bq24190_charger: Remove extcon handling Hans de Goede
2017-08-08  8:27   ` Liam Breck
2017-08-08  9:12     ` Hans de Goede
2017-08-06 12:35 ` [PATCH 17/18] platform/x86: intel_cht_int33fe Update fusb302 type string, add properties Hans de Goede
2017-08-06 12:35 ` [PATCH 18/18] i2c-cht-wc: Add device-properties for fusb302 integration Hans de Goede
2017-08-06 14:35   ` Guenter Roeck
2017-08-06 15:05     ` Hans de Goede
2017-08-06 16:29       ` Andy Shevchenko

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