From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753585AbdHOUGs (ORCPT ); Tue, 15 Aug 2017 16:06:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42704 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751224AbdHOUGp (ORCPT ); Tue, 15 Aug 2017 16:06:45 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com C14B672D7D Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx09.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=hdegoede@redhat.com From: Hans de Goede To: Wolfram Sang , Guenter Roeck , Heikki Krogerus , Sebastian Reichel , Darren Hart , Andy Shevchenko , Greg Kroah-Hartman Cc: Hans de Goede , Liam Breck , Tony Lindgren , linux-i2c@vger.kernel.org, linux-pm@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org Subject: [PATCH v2 14/14] platform/x86: intel_cht_int33fe: Update fusb302 type string, add properties Date: Tue, 15 Aug 2017 22:05:02 +0200 Message-Id: <20170815200502.17339-15-hdegoede@redhat.com> In-Reply-To: <20170815200502.17339-1-hdegoede@redhat.com> References: <20170815200502.17339-1-hdegoede@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Tue, 15 Aug 2017 20:06:45 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The fusb302 driver as merged in staging uses "typec_fusb302" as i2c-id rather then just "fusb302" and needs us to set a number of device- properties, adjust the intel_cht_int33fe driver accordingly. One of the properties set is max-snk-mv which makes the fusb302 driver negotiate up to 12V charging voltage, which is a bad idea on boards which are not setup to handle this, so this commit also adds 2 extra sanity checks to make sure that the expected Whiskey Cove PMIC + TI bq24292i charger combo, which can handle 12V, is present. Signed-off-by: Hans de Goede --- Changes in v2: -Set board_info.dev_name -Adjust for changes in other patches in this patch-set --- drivers/platform/x86/Kconfig | 6 ++++- drivers/platform/x86/intel_cht_int33fe.c | 44 +++++++++++++++++++++++++++++++- 2 files changed, 48 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index ef73860..2e412a3 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -793,7 +793,7 @@ config ACPI_CMPC config INTEL_CHT_INT33FE tristate "Intel Cherry Trail ACPI INT33FE Driver" - depends on X86 && ACPI && I2C + depends on X86 && ACPI && I2C && REGULATOR ---help--- This driver add support for the INT33FE ACPI device found on some Intel Cherry Trail devices. @@ -804,6 +804,10 @@ config INTEL_CHT_INT33FE This driver instantiates i2c-clients for these, so that standard i2c drivers for these chips can bind to the them. + If you enable this driver it is advised to also select + CONFIG_CHARGER_BQ24190=m, CONFIG_BATTERY_MAX17042=m and + CONFIG_TYPEC_FUSB302=m (currently in drivers/staging). + config INTEL_INT0002_VGPIO tristate "Intel ACPI INT0002 Virtual GPIO driver" depends on GPIOLIB && ACPI diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe.c index 5f1924f..6edfbed 100644 --- a/drivers/platform/x86/intel_cht_int33fe.c +++ b/drivers/platform/x86/intel_cht_int33fe.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #define EXPECTED_PTYPE 4 @@ -70,12 +71,21 @@ static const struct property_entry max17047_props[] = { { } }; +static const struct property_entry fusb302_props[] = { + PROPERTY_ENTRY_STRING("fcs,extcon-name", "cht_wcove_pwrsrc"), + PROPERTY_ENTRY_U32("fcs,max-snk-microvolt", 12000000), + PROPERTY_ENTRY_U32("fcs,max-snk-microamp", 3000000), + PROPERTY_ENTRY_U32("fcs,max-snk-microwatt", 36000000), + { } +}; + static int cht_int33fe_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct i2c_board_info board_info; struct cht_int33fe_data *data; struct i2c_client *max17047; + struct regulator *regulator; unsigned long long ptyp; acpi_status status; int ret, fusb302_irq; @@ -93,6 +103,34 @@ static int cht_int33fe_probe(struct i2c_client *client) if (ptyp != EXPECTED_PTYPE) return -ENODEV; + /* Check presence of INT34D3 (hardware-rev 3) expected for ptype == 4 */ + if (!acpi_dev_present("INT34D3", "1", 3)) { + dev_err(dev, "Error PTYPE == %d, but no INT34D3 device\n", + EXPECTED_PTYPE); + return -ENODEV; + } + + /* + * We expect the WC PMIC to be paired with a TI bq24292i charger-IC. + * We check for the bq24292i vbus regulator here, this has 2 purposes: + * 1) The bq24292i allows charging with up to 12V, setting the fusb302's + * max-snk voltage to 12V with another charger-IC is not good. + * 2) For the fusb302 driver to get the bq24292i vbus regulator, the + * regulator-map, which is part of the bq24292i regulator_init_data, + * must be registered before the fusb302 is instantiated, otherwise + * it will end up with a dummy-regulator. + * Note "cht_wc_usb_typec_vbus" comes from the regulator_init_data + * which is defined in i2c-cht-wc.c from where the bq24292i i2c-client + * gets instantiated. We use regulator_get_optional here so that we + * don't end up getting a dummy-regulator ourselves. + */ + regulator = regulator_get_optional(dev, "cht_wc_usb_typec_vbus"); + if (IS_ERR(regulator)) { + ret = PTR_ERR(regulator); + return (ret == -ENODEV) ? -EPROBE_DEFER : ret; + } + regulator_put(regulator); + /* The FUSB302 uses the irq at index 1 and is the only irq user */ fusb302_irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 1); if (fusb302_irq < 0) { @@ -119,6 +157,7 @@ static int cht_int33fe_probe(struct i2c_client *client) } else { memset(&board_info, 0, sizeof(board_info)); strlcpy(board_info.type, "max17047", I2C_NAME_SIZE); + board_info.dev_name = "max17047"; board_info.properties = max17047_props; data->max17047 = i2c_acpi_new_device(dev, 1, &board_info); if (!data->max17047) @@ -126,7 +165,9 @@ static int cht_int33fe_probe(struct i2c_client *client) } memset(&board_info, 0, sizeof(board_info)); - strlcpy(board_info.type, "fusb302", I2C_NAME_SIZE); + strlcpy(board_info.type, "typec_fusb302", I2C_NAME_SIZE); + board_info.dev_name = "fusb302"; + board_info.properties = fusb302_props; board_info.irq = fusb302_irq; data->fusb302 = i2c_acpi_new_device(dev, 2, &board_info); @@ -134,6 +175,7 @@ static int cht_int33fe_probe(struct i2c_client *client) goto out_unregister_max17047; memset(&board_info, 0, sizeof(board_info)); + board_info.dev_name = "pi3usb30532"; strlcpy(board_info.type, "pi3usb30532", I2C_NAME_SIZE); data->pi3usb30532 = i2c_acpi_new_device(dev, 3, &board_info); -- 2.9.4