Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Alchemy Development Board example suspend userspace interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * (c) 2008 Manuel Lauss <mano@roarinelk.homelinux.net>
^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) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/kobject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/sysfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <asm/mach-au1x00/au1000.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <asm/mach-au1x00/gpio-au1000.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <asm/mach-db1x00/bcsr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17)  * Generic suspend userspace interface for Alchemy development boards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18)  * This code exports a few sysfs nodes under /sys/power/db1x/ which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19)  * can be used by userspace to en/disable all au1x-provided wakeup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * sources and configure the timeout after which the the TOYMATCH2 irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * is to trigger a wakeup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static unsigned long db1x_pm_sleep_secs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) static unsigned long db1x_pm_wakemsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static unsigned long db1x_pm_last_wakesrc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) static int db1x_pm_enter(suspend_state_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	unsigned short bcsrs[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	int i, j, hasint;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	/* save CPLD regs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	hasint = bcsr_read(BCSR_WHOAMI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	hasint = BCSR_WHOAMI_BOARD(hasint) >= BCSR_WHOAMI_DB1200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	j = (hasint) ? BCSR_MASKSET : BCSR_SYSTEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	for (i = BCSR_STATUS; i <= j; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 		bcsrs[i] = bcsr_read(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	/* shut off hexleds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	bcsr_write(BCSR_HEXCLEAR, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	/* enable GPIO based wakeup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	alchemy_gpio1_input_enable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	/* clear and setup wake cause and source */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	alchemy_wrsys(db1x_pm_wakemsk, AU1000_SYS_WAKEMSK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	/* setup 1Hz-timer-based wakeup: wait for reg access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		asm volatile ("nop");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	alchemy_wrsys(alchemy_rdsys(AU1000_SYS_TOYREAD) + db1x_pm_sleep_secs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		      AU1000_SYS_TOYMATCH2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	/* wait for value to really hit the register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	while (alchemy_rdsys(AU1000_SYS_CNTRCTRL) & SYS_CNTRL_M20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		asm volatile ("nop");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* ...and now the sandman can come! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	au_sleep();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	/* restore CPLD regs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	for (i = BCSR_STATUS; i <= BCSR_SYSTEM; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		bcsr_write(i, bcsrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	/* restore CPLD int registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	if (hasint) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		bcsr_write(BCSR_INTCLR, 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 		bcsr_write(BCSR_MASKCLR, 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		bcsr_write(BCSR_INTSTAT, 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		bcsr_write(BCSR_INTSET, bcsrs[BCSR_INTSET]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		bcsr_write(BCSR_MASKSET, bcsrs[BCSR_MASKSET]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	/* light up hexleds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	bcsr_write(BCSR_HEXCLEAR, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) static int db1x_pm_begin(suspend_state_t state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (!db1x_pm_wakemsk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		printk(KERN_ERR "db1x: no wakeup source activated!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) static void db1x_pm_end(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	/* read and store wakeup source, the clear the register. To
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	 * be able to clear it, WAKEMSK must be cleared first.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static const struct platform_suspend_ops db1x_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	.valid		= suspend_valid_only_mem,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	.begin		= db1x_pm_begin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	.enter		= db1x_pm_enter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	.end		= db1x_pm_end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define ATTRCMP(x) (0 == strcmp(attr->attr.name, #x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static ssize_t db1x_pmattr_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 				struct kobj_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 				char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (ATTRCMP(timer_timeout))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		return sprintf(buf, "%lu\n", db1x_pm_sleep_secs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	else if (ATTRCMP(timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 		return sprintf(buf, "%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 				!!(db1x_pm_wakemsk & SYS_WAKEMSK_M2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	else if (ATTRCMP(wakesrc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		return sprintf(buf, "%lu\n", db1x_pm_last_wakesrc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 		 ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		 ATTRCMP(gpio6) || ATTRCMP(gpio7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		idx = (attr->attr.name)[4] - '0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		return sprintf(buf, "%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			!!(db1x_pm_wakemsk & SYS_WAKEMSK_GPIO(idx)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	} else if (ATTRCMP(wakemsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return sprintf(buf, "%08lx\n", db1x_pm_wakemsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static ssize_t db1x_pmattr_store(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 				 struct kobj_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 				 const char *instr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 				 size_t bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	unsigned long l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (ATTRCMP(timer_timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		tmp = kstrtoul(instr, 0, &l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		if (tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 			return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		db1x_pm_sleep_secs = l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	} else if (ATTRCMP(timer)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		if (instr[0] != '0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 			db1x_pm_wakemsk |= SYS_WAKEMSK_M2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 			db1x_pm_wakemsk &= ~SYS_WAKEMSK_M2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	} else if (ATTRCMP(gpio0) || ATTRCMP(gpio1) || ATTRCMP(gpio2) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		   ATTRCMP(gpio3) || ATTRCMP(gpio4) || ATTRCMP(gpio5) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		   ATTRCMP(gpio6) || ATTRCMP(gpio7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		tmp = (attr->attr.name)[4] - '0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		if (instr[0] != '0') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 			db1x_pm_wakemsk |= SYS_WAKEMSK_GPIO(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 			db1x_pm_wakemsk &= ~SYS_WAKEMSK_GPIO(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	} else if (ATTRCMP(wakemsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		tmp = kstrtoul(instr, 0, &l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 		if (tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 			return tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		db1x_pm_wakemsk = l & 0x0000003f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	} else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		bytes = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) #define ATTR(x)							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	static struct kobj_attribute x##_attribute =		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		__ATTR(x, 0664, db1x_pmattr_show,		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 				db1x_pmattr_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) ATTR(gpio0)		/* GPIO-based wakeup enable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) ATTR(gpio1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) ATTR(gpio2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) ATTR(gpio3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) ATTR(gpio4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) ATTR(gpio5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) ATTR(gpio6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) ATTR(gpio7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ATTR(timer)		/* TOYMATCH2-based wakeup enable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) ATTR(timer_timeout)	/* timer-based wakeup timeout value, in seconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) ATTR(wakesrc)		/* contents of SYS_WAKESRC after last wakeup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ATTR(wakemsk)		/* direct access to SYS_WAKEMSK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #define ATTR_LIST(x)	& x ## _attribute.attr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static struct attribute *db1x_pmattrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	ATTR_LIST(gpio0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	ATTR_LIST(gpio1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	ATTR_LIST(gpio2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	ATTR_LIST(gpio3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	ATTR_LIST(gpio4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	ATTR_LIST(gpio5),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	ATTR_LIST(gpio6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	ATTR_LIST(gpio7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	ATTR_LIST(timer),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	ATTR_LIST(timer_timeout),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	ATTR_LIST(wakesrc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	ATTR_LIST(wakemsk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	NULL,		/* terminator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static struct attribute_group db1x_pmattr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	.name	= "db1x",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	.attrs	= db1x_pmattrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) };
^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)  * Initialize suspend interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static int __init pm_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	/* init TOY to tick at 1Hz if not already done. No need to wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	 * for confirmation since there's plenty of time from here to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	 * the next suspend cycle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (alchemy_rdsys(AU1000_SYS_TOYTRIM) != 32767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		alchemy_wrsys(32767, AU1000_SYS_TOYTRIM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	db1x_pm_last_wakesrc = alchemy_rdsys(AU1000_SYS_WAKESRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	alchemy_wrsys(0, AU1000_SYS_WAKESRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	alchemy_wrsys(0, AU1000_SYS_WAKEMSK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	suspend_set_ops(&db1x_pm_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	return sysfs_create_group(power_kobj, &db1x_pmattr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) late_initcall(pm_init);