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extcon: int3496: Add GPIO ACPI mapping table
In order to make GPIO ACPI library stricter prepare users of gpiod_get_index() to correctly behave when there no mapping is provided by firmware. Here we add explicit mapping between _CRS GpioIo() resources and their names used in the driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
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@ -20,3 +20,8 @@ Index 1: The output gpio for enabling Vbus output from the device to the otg
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Index 2: The output gpio for muxing of the data pins between the USB host and
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the USB peripheral controller, write 1 to mux to the peripheral
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controller
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There is a mapping between indices and GPIO connection IDs as follows
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id index 0
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vbus index 1
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mux index 2
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@ -45,6 +45,17 @@ static const unsigned int int3496_cable[] = {
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EXTCON_NONE,
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};
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static const struct acpi_gpio_params id_gpios = { INT3496_GPIO_USB_ID, 0, false };
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static const struct acpi_gpio_params vbus_gpios = { INT3496_GPIO_VBUS_EN, 0, false };
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static const struct acpi_gpio_params mux_gpios = { INT3496_GPIO_USB_MUX, 0, false };
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static const struct acpi_gpio_mapping acpi_int3496_default_gpios[] = {
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{ "id-gpios", &id_gpios, 1 },
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{ "vbus-gpios", &vbus_gpios, 1 },
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{ "mux-gpios", &mux_gpios, 1 },
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{ },
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};
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static void int3496_do_usb_id(struct work_struct *work)
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{
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struct int3496_data *data =
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@ -83,6 +94,13 @@ static int int3496_probe(struct platform_device *pdev)
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struct int3496_data *data;
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int ret;
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ret = acpi_dev_add_driver_gpios(ACPI_COMPANION(dev),
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acpi_int3496_default_gpios);
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if (ret) {
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dev_err(dev, "can't add GPIO ACPI mapping\n");
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return ret;
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}
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data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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@ -154,6 +172,8 @@ static int int3496_remove(struct platform_device *pdev)
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devm_free_irq(&pdev->dev, data->usb_id_irq, data);
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cancel_delayed_work_sync(&data->work);
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acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev));
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return 0;
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}
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