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author | Solomon Peachy <pizza@shaftnet.org> | 2018-06-29 16:09:28 -0400 |
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committer | Solomon Peachy <pizza@shaftnet.org> | 2019-01-02 08:10:01 -0500 |
commit | d4942cc74c82c465ea395637c77ed06565b8b497 (patch) | |
tree | 8c1fa737c93f8a2ade5a1566857dc4dc8f578bd6 /firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c | |
parent | af9459a7992596e932c6d8cc0a6366ff0f0b0fca (diff) | |
download | rockbox-d4942cc74c82c465ea395637c77ed06565b8b497.tar.gz rockbox-d4942cc74c82c465ea395637c77ed06565b8b497.zip |
Add Xuelin iHIFI 770/770C/800 support
Taken from the xvortex fork (Roman Stolyarov)
Ported, rebased, and cleaned up by myself.
Change-Id: I7b2bca2d29502f2e4544e42f3d122786dd4b7978
Diffstat (limited to 'firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c')
-rw-r--r-- | firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c b/firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c new file mode 100644 index 0000000000..b0ff4f5a7b --- /dev/null +++ b/firmware/target/arm/rk27xx/ihifi2/powermgmt-ihifi770.c | |||
@@ -0,0 +1,64 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2016 by Roman Stolyarov | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "config.h" | ||
23 | #include "adc.h" | ||
24 | #include "adc-target.h" | ||
25 | #include "powermgmt.h" | ||
26 | |||
27 | /* Battery voltage calculation and discharge/charge curves for the iHiFi 770 | ||
28 | |||
29 | Battery voltage is calculated under the assumption that the adc full-scale | ||
30 | readout represents 3.00V and that the battery ADC channel is fed with | ||
31 | exactly half of the battery voltage (through a resistive divider). | ||
32 | Charge curve have not been calibrated yet. | ||
33 | */ | ||
34 | |||
35 | const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = | ||
36 | { | ||
37 | /* 5% */ | ||
38 | 3500, | ||
39 | }; | ||
40 | |||
41 | const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = | ||
42 | { | ||
43 | /* 0% */ | ||
44 | 3300, | ||
45 | }; | ||
46 | |||
47 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ | ||
48 | const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = | ||
49 | { | ||
50 | { 3300, 3570, 3660, 3696, 3712, 3742, 3798, 3865, 3935, 4020, 4130 } | ||
51 | }; | ||
52 | |||
53 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ | ||
54 | const unsigned short percent_to_volt_charge[11] = | ||
55 | { 3300, 3570, 3660, 3696, 3712, 3742, 3798, 3865, 3935, 4020, 4130 }; | ||
56 | |||
57 | /* full-scale ADC readout (2^10) in millivolt */ | ||
58 | #define BATTERY_SCALE_FACTOR 6296 | ||
59 | |||
60 | /* Returns battery voltage from ADC [millivolts] */ | ||
61 | int _battery_voltage(void) | ||
62 | { | ||
63 | return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 10; | ||
64 | } | ||