// SPDX-License-Identifier: GPL-2.0+
/*
- * I2C multi-instantiate driver, pseudo driver to instantiate multiple
- * i2c-clients from a single fwnode.
+ * Serial multi-instantiate driver, pseudo driver to instantiate multiple
+ * client devices from a single fwnode.
*
* Copyright 2018 Hans de Goede <hdegoede@redhat.com>
*/
#define IRQ_RESOURCE_GPIO 1
#define IRQ_RESOURCE_APIC 2
-struct i2c_inst_data {
+struct smi_instance {
const char *type;
unsigned int flags;
int irq_idx;
};
-struct i2c_multi_inst_data {
- int num_clients;
- struct i2c_client *clients[];
+struct smi {
+ int i2c_num;
+ struct i2c_client *i2c_devs[];
};
-static int i2c_multi_inst_probe(struct platform_device *pdev)
+static int smi_probe(struct platform_device *pdev)
{
- struct i2c_multi_inst_data *multi;
- const struct i2c_inst_data *inst_data;
struct i2c_board_info board_info = {};
+ const struct smi_instance *inst;
struct device *dev = &pdev->dev;
struct acpi_device *adev;
+ struct smi *smi;
char name[32];
int i, ret;
- inst_data = device_get_match_data(dev);
- if (!inst_data) {
+ inst = device_get_match_data(dev);
+ if (!inst) {
dev_err(dev, "Error ACPI match data is missing\n");
return -ENODEV;
}
if (ret < 0)
return ret;
- multi = devm_kmalloc(dev, struct_size(multi, clients, ret), GFP_KERNEL);
- if (!multi)
+ smi = devm_kmalloc(dev, struct_size(smi, i2c_devs, ret), GFP_KERNEL);
+ if (!smi)
return -ENOMEM;
- multi->num_clients = ret;
+ smi->i2c_num = ret;
- for (i = 0; i < multi->num_clients && inst_data[i].type; i++) {
+ for (i = 0; i < smi->i2c_num && inst[i].type; 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.%d", dev_name(dev),
- inst_data[i].type, i);
+ strlcpy(board_info.type, inst[i].type, I2C_NAME_SIZE);
+ snprintf(name, sizeof(name), "%s-%s.%d", dev_name(dev), inst[i].type, i);
board_info.dev_name = name;
- switch (inst_data[i].flags & IRQ_RESOURCE_TYPE) {
+ switch (inst[i].flags & IRQ_RESOURCE_TYPE) {
case IRQ_RESOURCE_GPIO:
- ret = acpi_dev_gpio_irq_get(adev, inst_data[i].irq_idx);
+ ret = acpi_dev_gpio_irq_get(adev, inst[i].irq_idx);
if (ret < 0) {
dev_err(dev, "Error requesting irq at index %d: %d\n",
- inst_data[i].irq_idx, ret);
+ inst[i].irq_idx, ret);
goto error;
}
board_info.irq = ret;
break;
case IRQ_RESOURCE_APIC:
- ret = platform_get_irq(pdev, inst_data[i].irq_idx);
+ ret = platform_get_irq(pdev, inst[i].irq_idx);
if (ret < 0) {
dev_dbg(dev, "Error requesting irq at index %d: %d\n",
- inst_data[i].irq_idx, ret);
+ inst[i].irq_idx, ret);
goto error;
}
board_info.irq = ret;
board_info.irq = 0;
break;
}
- multi->clients[i] = i2c_acpi_new_device(dev, i, &board_info);
- if (IS_ERR(multi->clients[i])) {
- ret = dev_err_probe(dev, PTR_ERR(multi->clients[i]),
+ smi->i2c_devs[i] = i2c_acpi_new_device(dev, i, &board_info);
+ if (IS_ERR(smi->i2c_devs[i])) {
+ ret = dev_err_probe(dev, PTR_ERR(smi->i2c_devs[i]),
"Error creating i2c-client, idx %d\n", i);
goto error;
}
}
- if (i < multi->num_clients) {
+ if (i < smi->i2c_num) {
dev_err(dev, "Error finding driver, idx %d\n", i);
ret = -ENODEV;
goto error;
}
- platform_set_drvdata(pdev, multi);
+ platform_set_drvdata(pdev, smi);
return 0;
error:
while (--i >= 0)
- i2c_unregister_device(multi->clients[i]);
+ i2c_unregister_device(smi->i2c_devs[i]);
return ret;
}
-static int i2c_multi_inst_remove(struct platform_device *pdev)
+static int smi_remove(struct platform_device *pdev)
{
- struct i2c_multi_inst_data *multi = platform_get_drvdata(pdev);
+ struct smi *smi = platform_get_drvdata(pdev);
int i;
- for (i = 0; i < multi->num_clients; i++)
- i2c_unregister_device(multi->clients[i]);
+ for (i = 0; i < smi->i2c_num; i++)
+ i2c_unregister_device(smi->i2c_devs[i]);
return 0;
}
-static const struct i2c_inst_data bsg1160_data[] = {
+static const struct smi_instance bsg1160_data[] = {
{ "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
{ "bmc150_magn" },
{ "bmg160" },
{}
};
-static const struct i2c_inst_data bsg2150_data[] = {
+static const struct smi_instance bsg2150_data[] = {
{ "bmc150_accel", IRQ_RESOURCE_GPIO, 0 },
{ "bmc150_magn" },
/* The resources describe a 3th client, but it is not really there. */
{}
};
-static const struct i2c_inst_data int3515_data[] = {
+static const struct smi_instance int3515_data[] = {
{ "tps6598x", IRQ_RESOURCE_APIC, 0 },
{ "tps6598x", IRQ_RESOURCE_APIC, 1 },
{ "tps6598x", IRQ_RESOURCE_APIC, 2 },
};
/*
- * Note new device-ids must also be added to i2c_multi_instantiate_ids in
+ * Note new device-ids must also be added to ignore_serial_bus_ids in
* drivers/acpi/scan.c: acpi_device_enumeration_by_parent().
*/
-static const struct acpi_device_id i2c_multi_inst_acpi_ids[] = {
+static const struct acpi_device_id smi_acpi_ids[] = {
{ "BSG1160", (unsigned long)bsg1160_data },
{ "BSG2150", (unsigned long)bsg2150_data },
{ "INT3515", (unsigned long)int3515_data },
{ }
};
-MODULE_DEVICE_TABLE(acpi, i2c_multi_inst_acpi_ids);
+MODULE_DEVICE_TABLE(acpi, smi_acpi_ids);
-static struct platform_driver i2c_multi_inst_driver = {
+static struct platform_driver smi_driver = {
.driver = {
- .name = "I2C multi instantiate pseudo device driver",
- .acpi_match_table = i2c_multi_inst_acpi_ids,
+ .name = "Serial bus multi instantiate pseudo device driver",
+ .acpi_match_table = smi_acpi_ids,
},
- .probe = i2c_multi_inst_probe,
- .remove = i2c_multi_inst_remove,
+ .probe = smi_probe,
+ .remove = smi_remove,
};
-module_platform_driver(i2c_multi_inst_driver);
+module_platform_driver(smi_driver);
-MODULE_DESCRIPTION("I2C multi instantiate pseudo device driver");
+MODULE_DESCRIPTION("Serial multi instantiate pseudo device driver");
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_LICENSE("GPL");
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