[J-u-boot.git] / drivers / power / mt6323.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2019 Frank Wunderlich <[email protected]>
 */

#include <command.h>
#include <asm/io.h>
#include <linux/delay.h>

#define PWRAP_BASE		0x1000d000
#define PWRAP_WACS2_CMD		0x9c

#define PWRAP_CALC(adr, wdata) ((1 << 31) | (((adr) >> 1) << 16) | (wdata))

#define MT6323_PWRC_BASE	0x8000
#define RTC_BBPU		0x0000
#define RTC_BBPU_KEY		(0x43 << 8)
#define RTC_WRTGR		0x003c

int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
	u32 addr, val;

	addr = PWRAP_BASE + PWRAP_WACS2_CMD;
	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_BBPU, RTC_BBPU_KEY);
	writel(val, addr);

	mdelay(10);

	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_WRTGR, 1);
	writel(val, addr);

	// wait some time and then print error
	mdelay(10000);
	printf("Failed to power off!!!\n");
	return 1;
}
Commit	Line	Data
36b8b5d3 FW	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright (C) 2019 Frank Wunderlich <[email protected]>
	4	*/
	5
36b8b5d3 FW	6	#include <command.h>
36b8b5d3 FW	7	#include <asm/io.h>
c05ed00a	8	#include <linux/delay.h>
36b8b5d3 FW	9
	10	#define PWRAP_BASE 0x1000d000
	11	#define PWRAP_WACS2_CMD 0x9c
	12
	13	#define PWRAP_CALC(adr, wdata) ((1 << 31) \| (((adr) >> 1) << 16) \| (wdata))
	14
	15	#define MT6323_PWRC_BASE 0x8000
	16	#define RTC_BBPU 0x0000
	17	#define RTC_BBPU_KEY (0x43 << 8)
	18	#define RTC_WRTGR 0x003c
	19
09140113	20	int do_poweroff(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])
36b8b5d3 FW	21	{
	22	u32 addr, val;
	23
	24	addr = PWRAP_BASE + PWRAP_WACS2_CMD;
	25	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_BBPU, RTC_BBPU_KEY);
	26	writel(val, addr);
	27
	28	mdelay(10);
	29
	30	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_WRTGR, 1);
	31	writel(val, addr);
	32
	33	// wait some time and then print error
	34	mdelay(10000);
	35	printf("Failed to power off!!!\n");
	36	return 1;
	37	}