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)  * Copyright (c) 2007 Simtec Electronics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *	Ben Dooks <ben@simtec.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * S3C2412 Power Manager low-level sleep support
^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/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/assembler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "map.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "regs-irq.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	.text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	.global	s3c2412_sleep_enter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) s3c2412_sleep_enter:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	mov	r0, #0			/* argument for coprocessors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	ldr	r1, =S3C2410_INTPND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	ldr	r2, =S3C2410_SRCPND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	ldr	r3, =S3C2410_EINTPEND
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	teq	r0, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	bl	s3c2412_sleep_enter1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	teq	pc, r0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	bl	s3c2412_sleep_enter1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	.align	5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	/* this is called twice, first with the Z flag to ensure that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	 * instructions have been loaded into the cache, and the second
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	 * time to try and suspend the system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) s3c2412_sleep_enter1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	mcr	p15, 0, r0, c7, c10, 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	mcrne	p15, 0, r0, c7, c0, 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	/* if we return from here, it is because an interrupt was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	 * active when we tried to shutdown. Try and ack the IRQ and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	 * retry, as simply returning causes the system to lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	ldrne	r9, [r1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	strne	r9, [r1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	ldrne	r9, [r2]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	strne	r9, [r2]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	ldrne	r9, [r3]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	strne	r9, [r3]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	bne	s3c2412_sleep_enter1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	ret	lr