1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpigen.h>
4 #include <acpi/acpigen_dsm.h>
5
6 /* ------------------- I2C HID DSM ---------------------------- */
7
8 #define ACPI_DSM_I2C_HID_UUID "3CDFF6F7-4267-4555-AD05-B30A3D8938DE"
9
10 /* I2C HID currently supports revision 1 only, for which, only 1 additional
11 * function is supported. Thus, the query function should return 0x3:
12 * bit 0 = additional function supported
13 * bit 1 = function with index 1 supported
14 * All other revisions do not support additional functions and hence return 0
15 */
16
i2c_hid_func0_cb(void * arg)17 static void i2c_hid_func0_cb(void *arg)
18 {
19 /* ToInteger (Arg1, Local2) */
20 acpigen_write_to_integer(ARG1_OP, LOCAL2_OP);
21 /* If (LEqual (Local2, 0x1)) */
22 acpigen_write_if_lequal_op_int(LOCAL2_OP, 0x1);
23 /* Return (Buffer (One) { 0x3 }) */
24 acpigen_write_return_singleton_buffer(0x3);
25 /* Else */
26 acpigen_write_else();
27 /* Return (Buffer (One) { 0x0 }) */
28 acpigen_write_return_singleton_buffer(0x0);
29 acpigen_pop_len(); /* Pop : Else */
30 }
31
i2c_hid_func1_cb(void * arg)32 static void i2c_hid_func1_cb(void *arg)
33 {
34 struct dsm_i2c_hid_config *config = arg;
35 acpigen_write_return_byte(config->hid_desc_reg_offset);
36 }
37
38 static void (*i2c_hid_callbacks[2])(void *) = {
39 i2c_hid_func0_cb,
40 i2c_hid_func1_cb,
41 };
42
acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config * config)43 void acpigen_write_dsm_i2c_hid(struct dsm_i2c_hid_config *config)
44 {
45 acpigen_write_dsm(ACPI_DSM_I2C_HID_UUID, i2c_hid_callbacks,
46 ARRAY_SIZE(i2c_hid_callbacks), config);
47 }
48
49 /* ------------------- End: I2C HID DSM ------------------------- */
50
51 #define USB_DSM_UUID "CE2EE385-00E6-48CB-9F05-2EDB927C4899"
52
usb_dsm_func5_cb(void * arg)53 static void usb_dsm_func5_cb(void *arg)
54 {
55 struct dsm_usb_config *config = arg;
56 acpigen_write_return_byte(config->usb_lpm_incapable);
57 }
58
59 static void (*usb_dsm_callbacks[6])(void *) = {
60 NULL,
61 NULL,
62 NULL,
63 NULL,
64 NULL,
65 usb_dsm_func5_cb,
66 };
67
acpigen_write_dsm_usb(struct dsm_usb_config * config)68 void acpigen_write_dsm_usb(struct dsm_usb_config *config)
69 {
70 acpigen_write_dsm(USB_DSM_UUID, usb_dsm_callbacks,
71 ARRAY_SIZE(usb_dsm_callbacks), config);
72 }
73