From: Hans de Goede <hdegoede@redhat.com>
To: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Mark Gross <markgross@kernel.org>,
Andy Shevchenko <andy@infradead.org>,
Wolfram Sang <wsa@the-dreams.de>,
Sebastian Reichel <sre@kernel.org>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Ard Biesheuvel <ardb@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org, Yauhen Kharuzhy <jekhor@gmail.com>,
Tsuchiya Yuto <kitakar@gmail.com>,
platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org
Subject: [PATCH v3 19/20] extcon: intel-cht-wc: Add support for registering a power_supply class-device
Date: Sun, 28 Nov 2021 19:18:08 +0100 [thread overview]
Message-ID: <20211128181809.326736-20-hdegoede@redhat.com> (raw)
In-Reply-To: <20211128181809.326736-1-hdegoede@redhat.com>
The bq25890 used on the Yogabook YB1-X90 / -X91 models relies on
the extcon-driver's BC-1.2 charger detection, and the bq25890 driver
expect this info to be available through a parent power_supply
class-device which models the detected charger (idem to how the Type-C
TCPM code registers a power_supply classdev for the connected charger).
Add support for registering the power_supply class-device expected
by this setup.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v3:
- Some minor tweaks based on Andy's review
---
drivers/extcon/extcon-intel-cht-wc.c | 81 ++++++++++++++++++++++++++++
1 file changed, 81 insertions(+)
diff --git a/drivers/extcon/extcon-intel-cht-wc.c b/drivers/extcon/extcon-intel-cht-wc.c
index 150637bea417..144cb5d8cd47 100644
--- a/drivers/extcon/extcon-intel-cht-wc.c
+++ b/drivers/extcon/extcon-intel-cht-wc.c
@@ -14,6 +14,7 @@
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
+#include <linux/power_supply.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
@@ -106,6 +107,8 @@ struct cht_wc_extcon_data {
struct extcon_dev *edev;
struct usb_role_switch *role_sw;
struct regulator *vbus_boost;
+ struct power_supply *psy;
+ enum power_supply_usb_type usb_type;
unsigned int previous_cable;
bool usb_host;
bool vbus_boost_enabled;
@@ -170,18 +173,23 @@ static int cht_wc_extcon_get_charger(struct cht_wc_extcon_data *ext,
dev_warn(ext->dev,
"Unhandled charger type %d, defaulting to SDP\n",
ret);
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
return EXTCON_CHG_USB_SDP;
case CHT_WC_USBSRC_TYPE_SDP:
case CHT_WC_USBSRC_TYPE_FLOATING:
case CHT_WC_USBSRC_TYPE_OTHER:
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
return EXTCON_CHG_USB_SDP;
case CHT_WC_USBSRC_TYPE_CDP:
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_CDP;
return EXTCON_CHG_USB_CDP;
case CHT_WC_USBSRC_TYPE_DCP:
case CHT_WC_USBSRC_TYPE_DCP_EXTPHY:
case CHT_WC_USBSRC_TYPE_MHL: /* MHL2+ delivers upto 2A, treat as DCP */
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_DCP;
return EXTCON_CHG_USB_DCP;
case CHT_WC_USBSRC_TYPE_ACA:
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_ACA;
return EXTCON_CHG_USB_ACA;
}
}
@@ -266,6 +274,8 @@ static void cht_wc_extcon_pwrsrc_event(struct cht_wc_extcon_data *ext)
bool ignore_get_charger_errors = ext->usb_host;
enum usb_role role;
+ ext->usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+
ret = regmap_read(ext->regmap, CHT_WC_PWRSRC_STS, &pwrsrc_sts);
if (ret) {
dev_err(ext->dev, "Error reading pwrsrc status: %d\n", ret);
@@ -320,6 +330,9 @@ static void cht_wc_extcon_pwrsrc_event(struct cht_wc_extcon_data *ext)
ret = usb_role_switch_set_role(ext->role_sw, role);
if (ret)
dev_err(ext->dev, "Error setting USB-role: %d\n", ret);
+
+ if (ext->psy)
+ power_supply_changed(ext->psy);
}
static irqreturn_t cht_wc_extcon_isr(int irq, void *data)
@@ -420,6 +433,59 @@ static int cht_wc_extcon_get_role_sw_and_regulator(struct cht_wc_extcon_data *ex
return 0;
}
+static int cht_wc_extcon_psy_get_prop(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct cht_wc_extcon_data *ext = power_supply_get_drvdata(psy);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_USB_TYPE:
+ val->intval = ext->usb_type;
+ break;
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = ext->usb_type ? 1 : 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const enum power_supply_usb_type cht_wc_extcon_psy_usb_types[] = {
+ POWER_SUPPLY_USB_TYPE_SDP,
+ POWER_SUPPLY_USB_TYPE_CDP,
+ POWER_SUPPLY_USB_TYPE_DCP,
+ POWER_SUPPLY_USB_TYPE_ACA,
+ POWER_SUPPLY_USB_TYPE_UNKNOWN,
+};
+
+static const enum power_supply_property cht_wc_extcon_psy_props[] = {
+ POWER_SUPPLY_PROP_USB_TYPE,
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static const struct power_supply_desc cht_wc_extcon_psy_desc = {
+ .name = "cht_wcove_pwrsrc",
+ .type = POWER_SUPPLY_TYPE_USB,
+ .usb_types = cht_wc_extcon_psy_usb_types,
+ .num_usb_types = ARRAY_SIZE(cht_wc_extcon_psy_usb_types),
+ .properties = cht_wc_extcon_psy_props,
+ .num_properties = ARRAY_SIZE(cht_wc_extcon_psy_props),
+ .get_property = cht_wc_extcon_psy_get_prop,
+};
+
+static int cht_wc_extcon_register_psy(struct cht_wc_extcon_data *ext)
+{
+ struct power_supply_config psy_cfg = { .drv_data = ext };
+
+ ext->psy = devm_power_supply_register(ext->dev,
+ &cht_wc_extcon_psy_desc,
+ &psy_cfg);
+ return PTR_ERR_OR_ZERO(ext->psy);
+}
+
static int cht_wc_extcon_probe(struct platform_device *pdev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
@@ -463,6 +529,21 @@ static int cht_wc_extcon_probe(struct platform_device *pdev)
cht_wc_extcon_set_5v_boost(ext, false);
break;
case INTEL_CHT_WC_LENOVO_YOGABOOK1:
+ /* Do this first, as it may very well return -EPROBE_DEFER. */
+ ret = cht_wc_extcon_get_role_sw_and_regulator(ext);
+ if (ret)
+ return ret;
+ /*
+ * The bq25890 used here relies on this driver's BC-1.2 charger
+ * detection, and the bq25890 driver expect this info to be
+ * available through a parent power_supply class device which
+ * models the detected charger (idem to how the Type-C TCPM code
+ * registers a power_supply classdev for the connected charger).
+ */
+ ret = cht_wc_extcon_register_psy(ext);
+ if (ret)
+ return ret;
+ break;
case INTEL_CHT_WC_XIAOMI_MIPAD2:
ret = cht_wc_extcon_get_role_sw_and_regulator(ext);
if (ret)
--
2.33.1
next prev parent reply other threads:[~2021-11-28 18:22 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-28 18:17 [PATCH v3 00/20] power-suppy/i2c/extcon: Fix charger setup on Xiaomi Mi Pad 2 and Lenovo Yogabook Hans de Goede
2021-11-28 18:17 ` [PATCH v3 01/20] power: supply: core: Refactor power_supply_set_input_current_limit_from_supplier() Hans de Goede
2021-11-28 18:17 ` [PATCH v3 02/20] power: supply: bq25890: Rename IILIM field to IINLIM Hans de Goede
2021-11-28 18:17 ` [PATCH v3 03/20] power: supply: bq25890: Reduce reported CONSTANT_CHARGE_CURRENT_MAX for low temperatures Hans de Goede
2021-11-28 18:17 ` [PATCH v3 04/20] power: supply: bq25890: Add a bq25890_rw_init_data() helper Hans de Goede
2021-11-28 18:17 ` [PATCH v3 05/20] power: supply: bq25890: Add support to skip reset at probe() / remove() Hans de Goede
2021-11-28 18:17 ` [PATCH v3 06/20] power: supply: bq25890: Add support to read back the settings from the chip Hans de Goede
2021-11-28 18:17 ` [PATCH v3 07/20] power: supply: bq25890: Enable charging on boards where we skip reset Hans de Goede
2021-11-28 18:17 ` [PATCH v3 08/20] power: supply: bq25890: Drop dev->platform_data == NULL check Hans de Goede
2021-11-28 18:17 ` [PATCH v3 09/20] power: supply: bq25890: Add bq25890_set_otg_cfg() helper Hans de Goede
2021-11-28 18:17 ` [PATCH v3 10/20] power: supply: bq25890: Add support for registering the Vbus boost converter as a regulator Hans de Goede
2021-11-28 18:18 ` [PATCH v3 11/20] power: supply: bq25890: On the bq25892 set the IINLIM based on external charger detection Hans de Goede
2021-11-28 18:18 ` [PATCH v3 12/20] power: supply: bq25890: Support higher charging voltages through Pump Express+ protocol Hans de Goede
2021-11-28 18:18 ` [PATCH v3 13/20] power: supply: bq25890: Use the devm_regmap_field_bulk_alloc() helper Hans de Goede
2021-11-28 18:18 ` [PATCH v3 14/20] mfd: intel_soc_pmic_chtwc: Add cht_wc_model data to struct intel_soc_pmic Hans de Goede
2021-11-28 18:18 ` [PATCH v3 15/20] i2c: cht-wc: Make charger i2c-client instantiation board/device-model specific Hans de Goede
2021-11-28 18:18 ` [PATCH v3 16/20] extcon: intel-cht-wc: Use new cht_wc_model intel_soc_pmic field Hans de Goede
2021-11-28 18:18 ` [PATCH v3 17/20] extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C connectors Hans de Goede
2021-11-28 18:18 ` [PATCH v3 18/20] extcon: intel-cht-wc: Refactor cht_wc_extcon_get_charger() Hans de Goede
2021-11-28 18:18 ` Hans de Goede [this message]
2021-11-28 18:18 ` [PATCH v3 20/20] extcon: intel-cht-wc: Report RID_A for ACA adapters Hans de Goede
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