Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  Driver for the LID cover switch of the Surface 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (c) 2016 Red Hat Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@redhat.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) MODULE_DESCRIPTION("Surface 3 platform driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define ACPI_BUTTON_HID_LID		"PNP0C0D"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define SPI_CTL_OBJ_NAME		"SPI"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define SPI_TS_OBJ_NAME			"NTRG"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define SURFACE3_LID_GUID "F7CC25EC-D20B-404C-8903-0ED4359C18AE"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) MODULE_ALIAS("wmi:" SURFACE3_LID_GUID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static const struct dmi_system_id surface3_dmi_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #if defined(CONFIG_X86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 		.matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 			DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 			DMI_MATCH(DMI_PRODUCT_NAME, "Surface 3"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) struct surface3_wmi {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	struct acpi_device *touchscreen_adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	struct acpi_device *pnp0c0d_adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	struct acpi_hotplug_context hp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) static struct platform_device *s3_wmi_pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) static struct surface3_wmi s3_wmi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static DEFINE_MUTEX(s3_wmi_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) static int s3_wmi_query_block(const char *guid, int instance, int *ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	mutex_lock(&s3_wmi_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	status = wmi_query_block(guid, instance, &output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	obj = output.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (!obj || obj->type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		if (obj) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			pr_err("query block returned object type: %d - buffer length:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 			       obj->type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			       obj->type == ACPI_TYPE_BUFFER ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 						obj->buffer.length : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		error = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		goto out_free_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	*ret = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80)  out_free_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	kfree(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	mutex_unlock(&s3_wmi_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) static inline int s3_wmi_query_lid(int *ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	return s3_wmi_query_block(SURFACE3_LID_GUID, 0, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) static int s3_wmi_send_lid_state(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	int ret, lid_sw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	ret = s3_wmi_query_lid(&lid_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	input_report_switch(s3_wmi.input, SW_LID, lid_sw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	input_sync(s3_wmi.input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int s3_wmi_hp_notify(struct acpi_device *adev, u32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	return s3_wmi_send_lid_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static acpi_status s3_wmi_attach_spi_device(acpi_handle handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 					    u32 level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 					    void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 					    void **return_value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	struct acpi_device *adev, **ts_adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	if (acpi_bus_get_device(handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 		return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	ts_adev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	if (strncmp(acpi_device_bid(adev), SPI_TS_OBJ_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	    strlen(SPI_TS_OBJ_NAME)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	if (*ts_adev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		pr_err("duplicate entry %s\n", SPI_TS_OBJ_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	*ts_adev = adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int s3_wmi_check_platform_device(struct device *dev, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	struct acpi_device *adev, *ts_adev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	acpi_handle handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	/* ignore non ACPI devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	if (!handle || acpi_bus_get_device(handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/* check for LID ACPI switch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	if (!strcmp(ACPI_BUTTON_HID_LID, acpi_device_hid(adev))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		s3_wmi.pnp0c0d_adev = adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	/* ignore non SPI controllers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (strncmp(acpi_device_bid(adev), SPI_CTL_OBJ_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	    strlen(SPI_CTL_OBJ_NAME)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 				     s3_wmi_attach_spi_device, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 				     &ts_adev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		dev_warn(dev, "failed to enumerate SPI slaves\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	if (!ts_adev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	s3_wmi.touchscreen_adev = ts_adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int s3_wmi_create_and_register_input(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	input = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	if (!input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	input->name = "Lid Switch";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	input->phys = "button/input0";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	input->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	input->id.product = 0x0005;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	input_set_capability(input, EV_SW, SW_LID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	error = input_register_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 		goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	s3_wmi.input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)  out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	input_free_device(s3_wmi.input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static int __init s3_wmi_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	if (!dmi_check_system(surface3_dmi_table))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	memset(&s3_wmi, 0, sizeof(s3_wmi));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	bus_for_each_dev(&platform_bus_type, NULL, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 			 s3_wmi_check_platform_device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (!s3_wmi.touchscreen_adev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	acpi_bus_trim(s3_wmi.pnp0c0d_adev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	error = s3_wmi_create_and_register_input(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		goto restore_acpi_lid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	acpi_initialize_hp_context(s3_wmi.touchscreen_adev, &s3_wmi.hp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 				   s3_wmi_hp_notify, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	s3_wmi_send_lid_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)  restore_acpi_lid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	acpi_bus_scan(s3_wmi.pnp0c0d_adev->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int s3_wmi_remove(struct platform_device *device)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	/* remove the hotplug context from the acpi device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	s3_wmi.touchscreen_adev->hp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	/* reinstall the actual PNPC0C0D LID default handle */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	acpi_bus_scan(s3_wmi.pnp0c0d_adev->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int __maybe_unused s3_wmi_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	s3_wmi_send_lid_state();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static SIMPLE_DEV_PM_OPS(s3_wmi_pm, NULL, s3_wmi_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static struct platform_driver s3_wmi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		.name = "surface3-wmi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 		.pm = &s3_wmi_pm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	.remove = s3_wmi_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static int __init s3_wmi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	s3_wmi_pdev = platform_device_alloc("surface3-wmi", -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (!s3_wmi_pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	error = platform_device_add(s3_wmi_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		goto err_device_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	error = platform_driver_probe(&s3_wmi_driver, s3_wmi_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		goto err_device_del;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	pr_info("Surface 3 WMI Extras loaded\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)  err_device_del:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	platform_device_del(s3_wmi_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)  err_device_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	platform_device_put(s3_wmi_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static void __exit s3_wmi_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	platform_device_unregister(s3_wmi_pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	platform_driver_unregister(&s3_wmi_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) module_init(s3_wmi_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) module_exit(s3_wmi_exit);