summaryrefslogtreecommitdiff
path: root/src/cpu/samsung/exynos5250/power.c
blob: ffba8c5f372f4012fdf76257e774bdd7e5b97c2f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
/*
 * Power setup code for EXYNOS5
 *
 * Copyright (C) 2012 Samsung Electronics
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <arch/hlt.h>
#include <arch/io.h>
#include <arch/hlt.h>
#include <console/console.h>
#include <cpu/samsung/exynos5250/cpu.h>
#include <cpu/samsung/exynos5250/power.h>
#include <cpu/samsung/exynos5250/sysreg.h>

static void ps_hold_setup(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	/* Set PS-Hold high */
	setbits_le32(&power->ps_hold_ctrl, POWER_PS_HOLD_CONTROL_DATA_HIGH);
}

void power_reset(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	/* Clear inform1 so there's no change we think we've got a wake reset */
	power->inform1 = 0;

	setbits_le32(&power->sw_reset, 1);
}

/* This function never returns */
void power_shutdown(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	clrbits_le32(&power->ps_hold_ctrl, POWER_PS_HOLD_CONTROL_DATA_HIGH);

	hlt();
}

void power_enable_dp_phy(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	setbits_le32(&power->dptx_phy_control, DPTX_PHY_ENABLE);
}

void power_enable_usb_phy(void)
{
	struct exynos5_sysreg *sysreg =
		samsung_get_base_sysreg();
	struct exynos5_power *power =
		samsung_get_base_power();
	unsigned int phy_cfg;

	/* Setting USB20PHY_CONFIG register to USB 2.0 HOST link */
	phy_cfg = readl(&sysreg->usb20_phy_cfg);
	if (phy_cfg & USB20_PHY_CFG_EN) {
		debug("USB 2.0 HOST link already selected\n");
	} else {
		phy_cfg |= USB20_PHY_CFG_EN;
		writel(phy_cfg, &sysreg->usb20_phy_cfg);
	}

	/* Enabling USBHOST_PHY */
	setbits_le32(&power->usb_host_phy_ctrl, POWER_USB_HOST_PHY_CTRL_EN);
}

void power_disable_usb_phy(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	/* Disabling USBHost_PHY */
	clrbits_le32(&power->usb_host_phy_ctrl, POWER_USB_HOST_PHY_CTRL_EN);
}

void power_enable_hw_thermal_trip(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	/* Enable HW thermal trip */
	setbits_le32(&power->ps_hold_ctrl, POWER_ENABLE_HW_TRIP);
}

uint32_t power_read_reset_status(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	return power->inform1;
}

void power_exit_wakeup(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();
	typedef void (*resume_func)(void);

	((resume_func)power->inform0)();
}

int power_init(void)
{
	ps_hold_setup();
	return 0;
}

void power_enable_xclkout(void)
{
	struct exynos5_power *power =
		samsung_get_base_power();

	/* use xxti for xclk out */
	clrsetbits_le32(&power->pmu_debug, PMU_DEBUG_CLKOUT_SEL_MASK,
				PMU_DEBUG_XXTI);
}