1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  OLPC XO-1.5 ebook switch driver
4  *  (based on generic ACPI button driver)
19 #define MODULE_NAME "xo15-ebook"
31 MODULE_DESCRIPTION("OLPC XO-1.5 ebook switch driver");
47 	struct ebook_switch *button = acpi_driver_data(device);  in ebook_send_state()  local
51 	status = acpi_evaluate_integer(device->handle, "EBK", NULL, &state);  in ebook_send_state()
53 		return -EIO;  in ebook_send_state()
56 	input_report_switch(button->input, SW_TABLET_MODE, !state);  in ebook_send_state()
57 	input_sync(button->input);  in ebook_send_state()
86 	struct ebook_switch *button;  in ebook_switch_add()  local
92 	button = kzalloc(sizeof(struct ebook_switch), GFP_KERNEL);  in ebook_switch_add()
93 	if (!button)  in ebook_switch_add()
94 		return -ENOMEM;  in ebook_switch_add()
96 	device->driver_data = button;  in ebook_switch_add()
98 	button->input = input = input_allocate_device();  in ebook_switch_add()
100 		error = -ENOMEM;  in ebook_switch_add()
109 		error = -ENODEV;  in ebook_switch_add()
116 	snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid);  in ebook_switch_add()
118 	input->name = name;  in ebook_switch_add()
119 	input->phys = button->phys;  in ebook_switch_add()
120 	input->id.bustype = BUS_HOST;  in ebook_switch_add()
121 	input->dev.parent = &device->dev;  in ebook_switch_add()
123 	input->evbit[0] = BIT_MASK(EV_SW);  in ebook_switch_add()
124 	set_bit(SW_TABLET_MODE, input->swbit);  in ebook_switch_add()
132 	if (device->wakeup.flags.valid) {  in ebook_switch_add()
133 		/* Button's GPE is run-wake GPE */  in ebook_switch_add()
134 		acpi_enable_gpe(device->wakeup.gpe_device,  in ebook_switch_add()
135 				device->wakeup.gpe_number);  in ebook_switch_add()
136 		device_set_wakeup_enable(&device->dev, true);  in ebook_switch_add()
144 	kfree(button);  in ebook_switch_add()
150 	struct ebook_switch *button = acpi_driver_data(device);  in ebook_switch_remove()  local
152 	input_unregister_device(button->input);  in ebook_switch_remove()
153 	kfree(button);  in ebook_switch_remove()