^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Lemote loongson2f family machines' specific suspend support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2009 Lemote Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Wu Zhangjin <wuzhangjin@gmail.com>
^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/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/i8042.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/i8259.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <loongson.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <cs5536/cs5536_mfgpt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "ec_kb3310b.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define I8042_KBD_IRQ 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define I8042_CTR_KBDINT 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define I8042_CTR_KBDDIS 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static unsigned char i8042_ctr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int i8042_enable_kbd_port(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) if (i8042_command(&i8042_ctr, I8042_CMD_CTL_RCTR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) pr_err("i8042.c: Can't read CTR while enabling i8042 kbd port."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) "\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) i8042_ctr &= ~I8042_CTR_KBDDIS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) i8042_ctr |= I8042_CTR_KBDINT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) if (i8042_command(&i8042_ctr, I8042_CMD_CTL_WCTR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) i8042_ctr &= ~I8042_CTR_KBDINT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) i8042_ctr |= I8042_CTR_KBDDIS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) pr_err("i8042.c: Failed to enable KBD port.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) void setup_wakeup_events(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int irq_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) switch (mips_machtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) case MACH_LEMOTE_ML2F7:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) case MACH_LEMOTE_YL2F89:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* open the keyboard irq in i8259A */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) outb((0xff & ~(1 << I8042_KBD_IRQ)), PIC_MASTER_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) irq_mask = inb(PIC_MASTER_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* enable keyboard port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) i8042_enable_kbd_port();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* Wakeup CPU via SCI lid open event */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) outb(irq_mask & ~(1 << PIC_CASCADE_IR), PIC_MASTER_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) inb(PIC_MASTER_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) outb(0xff & ~(1 << (SCI_IRQ_NUM - 8)), PIC_SLAVE_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) inb(PIC_SLAVE_IMR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static struct delayed_work lid_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* yeeloong_report_lid_status will be implemented in yeeloong_laptop.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) sci_handler yeeloong_report_lid_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) EXPORT_SYMBOL(yeeloong_report_lid_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static void yeeloong_lid_update_task(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (yeeloong_report_lid_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) yeeloong_report_lid_status(BIT_LID_DETECT_ON);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int wakeup_loongson(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* query the interrupt number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) irq = mach_i8259_irq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (irq < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) printk(KERN_INFO "%s: irq = %d\n", __func__, irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (irq == I8042_KBD_IRQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) else if (irq == SCI_IRQ_NUM) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) int ret, sci_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* query the event number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ret = ec_query_seq(CMD_GET_EVENT_NUM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) sci_event = ec_get_event_num();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (sci_event < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (sci_event == EVENT_LID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int lid_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* check the LID status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) lid_status = ec_read(REG_LID_DETECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /* wakeup cpu when people open the LID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (lid_status == BIT_LID_DETECT_ON) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* If we call it directly here, the WARNING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * will be sent out by getnstimeofday
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * via "WARN_ON(timekeeping_suspended);"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * because we can not schedule in suspend mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (initialized == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) INIT_DELAYED_WORK(&lid_task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) yeeloong_lid_update_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) initialized = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) schedule_delayed_work(&lid_task, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) void __weak mach_suspend(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) disable_mfgpt0_counter();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) void __weak mach_resume(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) enable_mfgpt0_counter();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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