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power:bat:trats: Break battery charging with ctrl+C
[karo-tx-uboot.git] / drivers / power / battery / bat_trats.c
1 /*
2  *  Copyright (C) 2012 Samsung Electronics
3  *  Lukasz Majewski <l.majewski@samsung.com>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #include <common.h>
25 #include <power/pmic.h>
26 #include <power/battery.h>
27 #include <power/max8997_pmic.h>
28 #include <errno.h>
29
30 static struct battery battery_trats;
31
32 static int power_battery_charge(struct pmic *bat)
33 {
34         struct power_battery *p_bat = bat->pbat;
35         struct battery *battery = p_bat->bat;
36         int k;
37
38         if (bat->chrg->chrg_state(p_bat->chrg, CHARGER_ENABLE, 450))
39                 return -1;
40
41         for (k = 0; bat->chrg->chrg_bat_present(p_bat->chrg) &&
42                      bat->chrg->chrg_type(p_bat->muic) &&
43                      battery->state_of_chrg < 100; k++) {
44                 udelay(2000000);
45                 if (!(k % 5))
46                         puts(".");
47                 bat->fg->fg_battery_update(p_bat->fg, bat);
48
49                 if (k == 200) {
50                         debug(" %d [V]", battery->voltage_uV);
51                         puts("\n");
52                         k = 0;
53                 }
54
55                 if (ctrlc()) {
56                         printf("\nCharging disabled on request.\n");
57                         goto exit;
58                 }
59         }
60  exit:
61         bat->chrg->chrg_state(p_bat->chrg, CHARGER_DISABLE, 0);
62
63         return 0;
64 }
65
66 static int power_battery_init_trats(struct pmic *bat_,
67                                     struct pmic *fg_,
68                                     struct pmic *chrg_,
69                                     struct pmic *muic_)
70 {
71         bat_->pbat->fg = fg_;
72         bat_->pbat->chrg = chrg_;
73         bat_->pbat->muic = muic_;
74
75         bat_->fg = fg_->fg;
76         bat_->chrg = chrg_->chrg;
77         bat_->chrg->chrg_type = muic_->chrg->chrg_type;
78         return 0;
79 }
80
81 static struct power_battery power_bat_trats = {
82         .bat = &battery_trats,
83         .battery_init = power_battery_init_trats,
84         .battery_charge = power_battery_charge,
85 };
86
87 int power_bat_init(unsigned char bus)
88 {
89         static const char name[] = "BAT_TRATS";
90         struct pmic *p = pmic_alloc();
91
92         if (!p) {
93                 printf("%s: POWER allocation error!\n", __func__);
94                 return -ENOMEM;
95         }
96
97         debug("Board BAT init\n");
98
99         p->interface = PMIC_NONE;
100         p->name = name;
101         p->bus = bus;
102
103         p->pbat = &power_bat_trats;
104         return 0;
105 }