Existing intel_cht_int33fe ACPI pseudo-device driver assumes that
hardware has TypeC connector and register related devices described as
I2C connections in the _CRS resource.
There at least one hardware (Lenovo Yoga Book YB1-91L/F) with microUSB
connector exists. It has INT33FE device in the DSDT table but there are
only two I2C connection described: PMIC and BQ27452 battery fuel gauge.
Splitting existing INT33FE driver allow to maintain code for microUSB
variant separately and make it simpler.
Signed-off-by: Yauhen Kharuzhy <jekhor@xxxxxxxxx>
---
drivers/platform/x86/Kconfig | 24 +++-
drivers/platform/x86/Makefile | 5 +-
.../platform/x86/intel_cht_int33fe_common.c | 93 ++++++++++++++++
.../platform/x86/intel_cht_int33fe_common.h | 23 ++++
drivers/platform/x86/intel_cht_int33fe_musb.c | 105 ++++++++++++++++++
...ht_int33fe.c => intel_cht_int33fe_typec.c} | 26 +----
6 files changed, 249 insertions(+), 27 deletions(-)
create mode 100644 drivers/platform/x86/intel_cht_int33fe_common.c
create mode 100644 drivers/platform/x86/intel_cht_int33fe_common.h
create mode 100644 drivers/platform/x86/intel_cht_int33fe_musb.c
rename drivers/platform/x86/{intel_cht_int33fe.c => intel_cht_int33fe_typec.c} (94%)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 1b67bb578f9f..a34c5615d6ef 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -920,15 +920,15 @@ config ACPI_CMPC
keys as input device, backlight device, tablet and accelerometer
devices.
-config INTEL_CHT_INT33FE
- tristate "Intel Cherry Trail ACPI INT33FE Driver"
+config INTEL_CHT_INT33FE_TYPEC
+ tristate "Intel Cherry Trail ACPI INT33FE Driver (typeC connector)"
depends on X86 && ACPI && I2C && REGULATOR
depends on CHARGER_BQ24190=y || (CHARGER_BQ24190=m && m)
depends on USB_ROLES_INTEL_XHCI=y || (USB_ROLES_INTEL_XHCI=m && m)
depends on TYPEC_MUX_PI3USB30532=y || (TYPEC_MUX_PI3USB30532=m && m)
- ---help---
+ help
This driver add support for the INT33FE ACPI device found on
- some Intel Cherry Trail devices.
+ some Intel Cherry Trail devices with USB TypeC connector.
The INT33FE ACPI device has a CRS table with I2cSerialBusV2
resources for 3 devices: Maxim MAX17047 Fuel Gauge Controller,
@@ -939,6 +939,22 @@ config INTEL_CHT_INT33FE
If you enable this driver it is advised to also select
CONFIG_TYPEC_FUSB302=m and CONFIG_BATTERY_MAX17042=m.
+config INTEL_CHT_INT33FE_MUSB
+ tristate "Intel Cherry Trail ACPI INT33FE Driver (mUSB connector)"
+ depends on X86 && ACPI && I2C
+ depends on USB_ROLES_INTEL_XHCI=y || (USB_ROLES_INTEL_XHCI=m && m)
+ help
+ This driver add support for the INT33FE ACPI device found on
+ some Intel Cherry Trail devices with microUSB connector.
+
+ The INT33FE ACPI device has a CRS table with I2cSerialBusV2
+ resources for TI BQ27452 Fuel Gauge Controller.
+ This driver instantiates i2c-client for it, so that standard
+ i2c driver for these chip can bind to the it.
+
+ If you enable this driver it is advised to also select
+ CONFIG_BATTERY_BQ27XXX=m and CONFIG_BATTERY_BQ27XXX_I2C=m.
+
config INTEL_INT0002_VGPIO
tristate "Intel ACPI INT0002 Virtual GPIO driver"
depends on GPIOLIB && ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 415104033060..d21532bba125 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -60,7 +60,10 @@ obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
obj-$(CONFIG_TOSHIBA_BT_RFKILL) += toshiba_bluetooth.o
obj-$(CONFIG_TOSHIBA_HAPS) += toshiba_haps.o
obj-$(CONFIG_TOSHIBA_WMI) += toshiba-wmi.o
-obj-$(CONFIG_INTEL_CHT_INT33FE) += intel_cht_int33fe.o
+obj-$(CONFIG_INTEL_CHT_INT33FE_TYPEC) += intel_cht_int33fe_typec.o \
+ intel_cht_int33fe_common.o
+obj-$(CONFIG_INTEL_CHT_INT33FE_MUSB) += intel_cht_int33fe_musb.o \
+ intel_cht_int33fe_common.o
obj-$(CONFIG_INTEL_INT0002_VGPIO) += intel_int0002_vgpio.o
obj-$(CONFIG_INTEL_HID_EVENT) += intel-hid.o
obj-$(CONFIG_INTEL_VBTN) += intel-vbtn.o
diff --git a/drivers/platform/x86/intel_cht_int33fe_common.c b/drivers/platform/x86/intel_cht_int33fe_common.c
new file mode 100644
index 000000000000..91c1b599dda8
--- /dev/null
+++ b/drivers/platform/x86/intel_cht_int33fe_common.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common code for Intel Cherry Trail ACPI INT33FE pseudo device drivers
+ * (microUSB and TypeC connector variants)
+ *
+ * Copyright (c) 2019 Yauhen Kharuzhy <jekhor@xxxxxxxxx>
+ */
+
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include "intel_cht_int33fe_common.h"
+
+#define EXPECTED_PTYPE 4
+
+static int cht_int33fe_i2c_res_filter(struct acpi_resource *ares, void *data)
+{
+ struct acpi_resource_i2c_serialbus *sb;
+ int *count = data;
+
+ if (i2c_acpi_get_i2c_resource(ares, &sb))
+ (*count)++;
+
+ return 1;
+}
+
+static int cht_int33fe_count_i2c_clients(struct device *dev)
+{
+ struct acpi_device *adev;
+ LIST_HEAD(resource_list);
+ int count = 0;
+
+ adev = ACPI_COMPANION(dev);
+ if (!adev)
+ return -EINVAL;
+
+ acpi_dev_get_resources(adev, &resource_list,
+ cht_int33fe_i2c_res_filter, &count);
+
+ acpi_dev_free_resource_list(&resource_list);
+
+ return count;
+}
+
+int cht_int33fe_check_hw_compatible(struct device *dev,
+ enum int33fe_hw_type hw_type)
+{
+ unsigned long long ptyp;
+ acpi_status status;
+ int i2c_expected;
+ int ret;
+
+ i2c_expected = (hw_type == INT33FE_HW_TYPEC) ? 4 : 2;
+
+ status = acpi_evaluate_integer(ACPI_HANDLE(dev), "PTYP", NULL, &ptyp);
+ if (ACPI_FAILURE(status)) {
+ dev_err(dev, "Error getting PTYPE\n");
+ return -ENODEV;
+ }
+
+ /*
+ * The same ACPI HID is used for different configurations check PTYP
+ * to ensure that we are dealing with the expected config.
+ */
+ 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;
+ }
+
+ ret = cht_int33fe_count_i2c_clients(dev);
+ if (ret < 0)
+ return ret;
+
+ if (ret != i2c_expected) {
+ dev_info(dev, "I2C clients count (%d) is not %d, ignore (probably %s hardware)",
+ ret, i2c_expected,
+ (hw_type == INT33FE_HW_TYPEC) ? "microUSB" : "Type C");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cht_int33fe_check_hw_compatible);
+
+MODULE_DESCRIPTION("Intel Cherry Trail ACPI INT33FE pseudo device driver (common part)");
+MODULE_AUTHOR("Yauhen Kharuzhy <jekhor@xxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/intel_cht_int33fe_common.h b/drivers/platform/x86/intel_cht_int33fe_common.h
new file mode 100644
index 000000000000..6bdae4a23f9b
--- /dev/null
+++ b/drivers/platform/x86/intel_cht_int33fe_common.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Common code for Intel Cherry Trail ACPI INT33FE pseudo device drivers
+ * (microUSB and TypeC connector variants), header file
+ *
+ * Copyright (c) 2019 Yauhen Kharuzhy <jekhor@xxxxxxxxx>
+ */
+
+#ifndef _INTEL_CHT_INT33FE_COMMON_H
+#define _INTEL_CHT_INT33FE_COMMON_H
+
+#include <linux/device.h>
+
+enum int33fe_hw_type {
+ INT33FE_HW_TYPEC,
+ INT33FE_HW_MUSB,
+};
+
+int cht_int33fe_check_hw_compatible(struct device *dev,
+ enum int33fe_hw_type hw_type);
+
+#endif /* _INTEL_CHT_INT33FE_COMMON_H */
+
diff --git a/drivers/platform/x86/intel_cht_int33fe_musb.c b/drivers/platform/x86/intel_cht_int33fe_musb.c
new file mode 100644
index 000000000000..49a8d34ac666
--- /dev/null
+++ b/drivers/platform/x86/intel_cht_int33fe_musb.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intel Cherry Trail ACPI INT33FE pseudo device driver for devices with
+ * microUSB connector (e.g. without of FUSB302 USB Type-C controller)
+ *
+ * Copyright (C) 2019 Yauhen Kharuzhy <jekhor@xxxxxxxxx>
+ *
+ * At least one Intel Cherry Trail based device which ship with Windows 10
+ * (Lenovo YogaBook YB1-X91L/F tablet), have this weird INT33FE ACPI device
+ * with a CRS table with 2 I2cSerialBusV2 resources, for 2 different chips
+ * attached to various i2c busses:
+ * 1. The Whiskey Cove pmic, which is also described by the INT34D3 ACPI device
+ * 2. TI BQ27542 Fuel Gauge Controller
+ *
+ * So this driver is a stub / pseudo driver whose only purpose is to
+ * instantiate i2c-client for battery fuel gauge, so that standard i2c driver
+ * for these chip can bind to the it.
+ */
+
+#define DEBUG
+
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/usb/pd.h>
+
+#include "intel_cht_int33fe_common.h"
+
+struct cht_int33fe_data {
+ struct i2c_client *battery_fg;
+};
+
+static const char * const bq27xxx_suppliers[] = { "bq25890-charger" };
+
+static const struct property_entry bq27xxx_props[] = {
+ PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq27xxx_suppliers),
+ { }
+};
+
+static int cht_int33fe_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct i2c_board_info board_info;
+ struct cht_int33fe_data *data;
+ int ret;
+
+ ret = cht_int33fe_check_hw_compatible(dev, INT33FE_HW_MUSB);
+ if (ret < 0)
+ return ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ memset(&board_info, 0, sizeof(board_info));
+ stracpy(board_info.type, "bq27542");
+ board_info.dev_name = "bq27542";
+ board_info.properties = bq27xxx_props;
+ data->battery_fg = i2c_acpi_new_device(dev, 1, &board_info);
+
+ if (IS_ERR(data->battery_fg)) {
+ dev_err(dev, "Failed to register battery fuel gauge: %ld\n",
+ PTR_ERR(data->battery_fg));
+ return PTR_ERR(data->battery_fg);
+ }
+
+ platform_set_drvdata(pdev, data);
+
+ return 0;
+}
+
+static int cht_int33fe_remove(struct platform_device *pdev)
+{
+ struct cht_int33fe_data *data = platform_get_drvdata(pdev);
+
+ i2c_unregister_device(data->battery_fg);
+
+ return 0;
+}
+
+static const struct acpi_device_id cht_int33fe_acpi_ids[] = {
+ { "INT33FE", },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, cht_int33fe_acpi_ids);
+
+static struct platform_driver cht_int33fe_driver = {
+ .driver = {
+ .name = "Intel Cherry Trail ACPI INT33FE mUSB driver",
+ .acpi_match_table = ACPI_PTR(cht_int33fe_acpi_ids),
+ },
+ .probe = cht_int33fe_probe,
+ .remove = cht_int33fe_remove,
+};
+
+module_platform_driver(cht_int33fe_driver);
+
+MODULE_DESCRIPTION("Intel Cherry Trail ACPI INT33FE pseudo device driver (microUSB conn)");
+MODULE_AUTHOR("Yauhen Kharuzhy <jekhor@xxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/platform/x86/intel_cht_int33fe.c b/drivers/platform/x86/intel_cht_int33fe_typec.c
similarity index 94%
rename from drivers/platform/x86/intel_cht_int33fe.c
rename to drivers/platform/x86/intel_cht_int33fe_typec.c
index 4fbdff48a4b5..6444d0673bef 100644
--- a/drivers/platform/x86/intel_cht_int33fe.c
+++ b/drivers/platform/x86/intel_cht_int33fe_typec.c
@@ -27,7 +27,7 @@
#include <linux/slab.h>
#include <linux/usb/pd.h>
-#define EXPECTED_PTYPE 4
+#include "intel_cht_int33fe_common.h"
enum {
INT33FE_NODE_FUSB302,
@@ -300,30 +300,12 @@ static int cht_int33fe_probe(struct platform_device *pdev)
struct cht_int33fe_data *data;
struct fwnode_handle *fwnode;
struct regulator *regulator;
- unsigned long long ptyp;
- acpi_status status;
int fusb302_irq;
int ret;
- status = acpi_evaluate_integer(ACPI_HANDLE(dev), "PTYP", NULL, &ptyp);
- if (ACPI_FAILURE(status)) {
- dev_err(dev, "Error getting PTYPE\n");
- return -ENODEV;
- }
-
- /*
- * The same ACPI HID is used for different configurations check PTYP
- * to ensure that we are dealing with the expected config.
- */
- 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;
- }
+ ret = cht_int33fe_check_hw_compatible(dev, INT33FE_HW_TYPEC);
+ if (ret < 0)
+ return ret;
/*
* We expect the WC PMIC to be paired with a TI bq24292i charger-IC.
--
2.23.0.rc0
