1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <arch/io.h>
4 #include <console/console.h>
5 #include <cpu/x86/smm.h>
6 #include <southbridge/intel/common/pmutil.h>
7 #include <northbridge/intel/ironlake/ironlake.h>
8 #include <ec/acpi/ec.h>
9 #include <ec/lenovo/h8/h8.h>
10 #include <delay.h>
11 #include "dock.h"
12
13 #define GPE_EC_SCI 1
14 #define GPE_EC_WAKE 13
15
mainboard_smi_handle_ec_sci(void)16 static void mainboard_smi_handle_ec_sci(void)
17 {
18 u8 status = inb(EC_SC);
19 u8 event;
20
21 if (!(status & EC_SCI_EVT))
22 return;
23
24 event = ec_query();
25 printk(BIOS_DEBUG, "EC event %#02x\n", event);
26
27 switch (event) {
28 case 0x18:
29 /* Fn-F9 key */
30 case 0x27:
31 /* Power loss */
32 case 0x50:
33 /* Undock Key */
34 ec_clr_bit(0x03, 2);
35 dock_disconnect();
36 break;
37 case 0x37:
38 case 0x58:
39 /* Dock Event */
40 ec_clr_bit(0x03, 2);
41 mdelay(250);
42 dock_connect();
43 ec_set_bit(0x03, 2);
44 /* set dock LED to indicate status */
45 ec_write(0x0c, 0x09);
46 ec_write(0x0c, 0x88);
47 break;
48 default:
49 break;
50 }
51 }
52
mainboard_smi_gpi(u32 gpi_sts)53 void mainboard_smi_gpi(u32 gpi_sts)
54 {
55 if (gpi_sts & (1 << GPE_EC_SCI))
56 mainboard_smi_handle_ec_sci();
57 }
58
mainboard_smi_apmc(u8 data)59 int mainboard_smi_apmc(u8 data)
60 {
61 switch (data) {
62 case APM_CNT_ACPI_ENABLE:
63 /* use 0x1600/0x1604 to prevent races with userspace */
64 ec_set_ports(0x1604, 0x1600);
65 /* route H8SCI to SCI */
66 gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
67 /* discard all events, and enable attention */
68 ec_write(0x80, 0x01);
69 break;
70 case APM_CNT_ACPI_DISABLE:
71 /* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
72 provide a EC query function */
73 ec_set_ports(0x66, 0x62);
74 /* route H8SCI# to SMI */
75 gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
76 /* discard all events, and enable attention */
77 ec_write(0x80, 0x01);
78 break;
79 default:
80 break;
81 }
82 return 0;
83 }
84
mainboard_smi_sleep(u8 slp_typ)85 void mainboard_smi_sleep(u8 slp_typ)
86 {
87 if (slp_typ == 3) {
88 u8 ec_wake = ec_read(0x32);
89 /* If EC wake events are enabled, enable wake on EC WAKE GPE. */
90 if (ec_wake & 0x14) {
91 /* Redirect EC WAKE GPE to SCI. */
92 gpi_route_interrupt(GPE_EC_WAKE, GPI_IS_SCI);
93 }
94 }
95 }
96