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) 2011 Wolfson Microelectronics, plc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) // Copyright (c) 2011 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) //		http://www.samsung.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/kernel.h>
^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/cpuidle.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/cpuidle.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "cpu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "map.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "regs-sys-s3c64xx.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "regs-syscon-power-s3c64xx.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static int s3c64xx_enter_idle(struct cpuidle_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 			      struct cpuidle_driver *drv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 			      int index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	/* Setup PWRCFG to enter idle mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	tmp = __raw_readl(S3C64XX_PWR_CFG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	tmp &= ~S3C64XX_PWRCFG_CFG_WFI_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	tmp |= S3C64XX_PWRCFG_CFG_WFI_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	__raw_writel(tmp, S3C64XX_PWR_CFG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	cpu_do_idle();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	return index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static struct cpuidle_driver s3c64xx_cpuidle_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.name	= "s3c64xx_cpuidle",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	.owner  = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	.states = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 			.enter            = s3c64xx_enter_idle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			.exit_latency     = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 			.target_residency = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			.name             = "IDLE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 			.desc             = "System active, ARM gated",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	.state_count = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static int __init s3c64xx_init_cpuidle(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	if (soc_is_s3c64xx())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		return cpuidle_register(&s3c64xx_cpuidle_driver, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) device_initcall(s3c64xx_init_cpuidle);