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-rw-r--r--drivers/platform/x86/Kconfig11
-rw-r--r--drivers/platform/x86/Makefile1
-rw-r--r--drivers/platform/x86/asus-wmi.c12
-rw-r--r--drivers/platform/x86/eeepc-laptop.c12
-rw-r--r--drivers/platform/x86/i2c-multi-instantiate.c132
-rw-r--r--drivers/platform/x86/intel_punit_ipc.c1
6 files changed, 153 insertions, 16 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index ac4d48830415..107d336453b2 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -1218,6 +1218,17 @@ config INTEL_CHTDC_TI_PWRBTN
To compile this driver as a module, choose M here: the module
will be called intel_chtdc_ti_pwrbtn.
+config I2C_MULTI_INSTANTIATE
+ tristate "I2C multi instantiate pseudo device driver"
+ depends on I2C && ACPI
+ help
+ Some ACPI-based systems list multiple i2c-devices in a single ACPI
+ firmware-node. This driver will instantiate separate i2c-clients
+ for each device in the firmware-node.
+
+ To compile this driver as a module, choose M here: the module
+ will be called i2c-multi-instantiate.
+
endif # X86_PLATFORM_DEVICES
config PMC_ATOM
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 2ba6cb795338..50dc8f280914 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -91,3 +91,4 @@ obj-$(CONFIG_PMC_ATOM) += pmc_atom.o
obj-$(CONFIG_MLX_PLATFORM) += mlx-platform.o
obj-$(CONFIG_INTEL_TURBO_MAX_3) += intel_turbo_max_3.o
obj-$(CONFIG_INTEL_CHTDC_TI_PWRBTN) += intel_chtdc_ti_pwrbtn.o
+obj-$(CONFIG_I2C_MULTI_INSTANTIATE) += i2c-multi-instantiate.o
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 3d523ca64694..d67f32a29bb4 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -858,12 +858,6 @@ static int asus_get_adapter_status(struct hotplug_slot *hotplug_slot,
return 0;
}
-static void asus_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
-{
- kfree(hotplug_slot->info);
- kfree(hotplug_slot);
-}
-
static struct hotplug_slot_ops asus_hotplug_slot_ops = {
.owner = THIS_MODULE,
.get_adapter_status = asus_get_adapter_status,
@@ -905,7 +899,6 @@ static int asus_setup_pci_hotplug(struct asus_wmi *asus)
goto error_info;
asus->hotplug_slot->private = asus;
- asus->hotplug_slot->release = &asus_cleanup_pci_hotplug;
asus->hotplug_slot->ops = &asus_hotplug_slot_ops;
asus_get_adapter_status(asus->hotplug_slot,
&asus->hotplug_slot->info->adapter_status);
@@ -1051,8 +1044,11 @@ static void asus_wmi_rfkill_exit(struct asus_wmi *asus)
* asus_unregister_rfkill_notifier()
*/
asus_rfkill_hotplug(asus);
- if (asus->hotplug_slot)
+ if (asus->hotplug_slot) {
pci_hp_deregister(asus->hotplug_slot);
+ kfree(asus->hotplug_slot->info);
+ kfree(asus->hotplug_slot);
+ }
if (asus->hotplug_workqueue)
destroy_workqueue(asus->hotplug_workqueue);
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 4c38904a8a32..a4bbf6ecd1f0 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -726,12 +726,6 @@ static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
return 0;
}
-static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
-{
- kfree(hotplug_slot->info);
- kfree(hotplug_slot);
-}
-
static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
.owner = THIS_MODULE,
.get_adapter_status = eeepc_get_adapter_status,
@@ -758,7 +752,6 @@ static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
goto error_info;
eeepc->hotplug_slot->private = eeepc;
- eeepc->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
eeepc->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
eeepc_get_adapter_status(eeepc->hotplug_slot,
&eeepc->hotplug_slot->info->adapter_status);
@@ -837,8 +830,11 @@ static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
eeepc->wlan_rfkill = NULL;
}
- if (eeepc->hotplug_slot)
+ if (eeepc->hotplug_slot) {
pci_hp_deregister(eeepc->hotplug_slot);
+ kfree(eeepc->hotplug_slot->info);
+ kfree(eeepc->hotplug_slot);
+ }
if (eeepc->bluetooth_rfkill) {
rfkill_unregister(eeepc->bluetooth_rfkill);
diff --git a/drivers/platform/x86/i2c-multi-instantiate.c b/drivers/platform/x86/i2c-multi-instantiate.c
new file mode 100644
index 000000000000..5456581b473c
--- /dev/null
+++ b/drivers/platform/x86/i2c-multi-instantiate.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * I2C multi-instantiate driver, pseudo driver to instantiate multiple
+ * i2c-clients from a single fwnode.
+ *
+ * Copyright 2018 Hans de Goede <hdegoede@redhat.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+struct i2c_inst_data {
+ const char *type;
+ int gpio_irq_idx;
+};
+
+struct i2c_multi_inst_data {
+ int num_clients;
+ struct i2c_client *clients[0];
+};
+
+static int i2c_multi_inst_probe(struct platform_device *pdev)
+{
+ struct i2c_multi_inst_data *multi;
+ const struct acpi_device_id *match;
+ const struct i2c_inst_data *inst_data;
+ struct i2c_board_info board_info = {};
+ struct device *dev = &pdev->dev;
+ struct acpi_device *adev;
+ char name[32];
+ int i, ret;
+
+ match = acpi_match_device(dev->driver->acpi_match_table, dev);
+ if (!match) {
+ dev_err(dev, "Error ACPI match data is missing\n");
+ return -ENODEV;
+ }
+ inst_data = (const struct i2c_inst_data *)match->driver_data;
+
+ adev = ACPI_COMPANION(dev);
+
+ /* Count number of clients to instantiate */
+ for (i = 0; inst_data[i].type; i++) {}
+
+ multi = devm_kmalloc(dev,
+ offsetof(struct i2c_multi_inst_data, clients[i]),
+ GFP_KERNEL);
+ if (!multi)
+ return -ENOMEM;
+
+ multi->num_clients = i;
+
+ for (i = 0; i < multi->num_clients; i++) {
+ memset(&board_info, 0, sizeof(board_info));
+ strlcpy(board_info.type, inst_data[i].type, I2C_NAME_SIZE);
+ snprintf(name, sizeof(name), "%s-%s", match->id,
+ inst_data[i].type);
+ board_info.dev_name = name;
+ board_info.irq = 0;
+ if (inst_data[i].gpio_irq_idx != -1) {
+ ret = acpi_dev_gpio_irq_get(adev,
+ inst_data[i].gpio_irq_idx);
+ if (ret < 0) {
+ dev_err(dev, "Error requesting irq at index %d: %d\n",
+ inst_data[i].gpio_irq_idx, ret);
+ goto error;
+ }
+ board_info.irq = ret;
+ }
+ multi->clients[i] = i2c_acpi_new_device(dev, i, &board_info);
+ if (!multi->clients[i]) {
+ dev_err(dev, "Error creating i2c-client, idx %d\n", i);
+ ret = -ENODEV;
+ goto error;
+ }
+ }
+
+ platform_set_drvdata(pdev, multi);
+ return 0;
+
+error:
+ while (--i >= 0)
+ i2c_unregister_device(multi->clients[i]);
+
+ return ret;
+}
+
+static int i2c_multi_inst_remove(struct platform_device *pdev)
+{
+ struct i2c_multi_inst_data *multi = platform_get_drvdata(pdev);
+ int i;
+
+ for (i = 0; i < multi->num_clients; i++)
+ i2c_unregister_device(multi->clients[i]);
+
+ return 0;
+}
+
+static const struct i2c_inst_data bsg1160_data[] = {
+ { "bmc150_accel", 0 },
+ { "bmc150_magn", -1 },
+ { "bmg160", -1 },
+ {}
+};
+
+/*
+ * Note new device-ids must also be added to i2c_multi_instantiate_ids in
+ * drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
+ */
+static const struct acpi_device_id i2c_multi_inst_acpi_ids[] = {
+ { "BSG1160", (unsigned long)bsg1160_data },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, i2c_multi_inst_acpi_ids);
+
+static struct platform_driver i2c_multi_inst_driver = {
+ .driver = {
+ .name = "I2C multi instantiate pseudo device driver",
+ .acpi_match_table = ACPI_PTR(i2c_multi_inst_acpi_ids),
+ },
+ .probe = i2c_multi_inst_probe,
+ .remove = i2c_multi_inst_remove,
+};
+module_platform_driver(i2c_multi_inst_driver);
+
+MODULE_DESCRIPTION("I2C multi instantiate pseudo device driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/platform/x86/intel_punit_ipc.c b/drivers/platform/x86/intel_punit_ipc.c
index b5b890127479..f1afc0ebbc68 100644
--- a/drivers/platform/x86/intel_punit_ipc.c
+++ b/drivers/platform/x86/intel_punit_ipc.c
@@ -12,6 +12,7 @@
*/
#include <linux/module.h>
+#include <linux/mod_devicetable.h>
#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/bitops.h>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 20:15:23 +0300