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author | Andrew Ryabinin <ryabinin.a.a@gmail.com> | 2013-11-16 18:21:00 +0400 |
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committer | Andrew Ryabinin <ryabinin.a.a@gmail.com> | 2013-12-16 00:45:18 +0400 |
commit | 5b5f0755d6d7fd9e3fdfdb479caeb7fafd0a9960 (patch) | |
tree | 4b9c567df8a5aefb46ace938a034988b7fdb045d /firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c | |
parent | 04c59b8a15f96812081ea8730337825af679fbce (diff) | |
download | rockbox-5b5f0755d6d7fd9e3fdfdb479caeb7fafd0a9960.tar.gz rockbox-5b5f0755d6d7fd9e3fdfdb479caeb7fafd0a9960.zip |
Introduce IHIFI760/960 targets.
Change-Id: Ie36e48742c0ed9aa3fd6f49aa034a11d2492327c
Diffstat (limited to 'firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c')
-rw-r--r-- | firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c b/firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c new file mode 100644 index 0000000000..c8797c0a32 --- /dev/null +++ b/firmware/target/arm/rk27xx/ihifi/powermgmt-ihifi960.c | |||
@@ -0,0 +1,65 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright © 2013 Andrew Ryabinin | ||
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 HiFiMAN HM-60x. | ||
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 | /* TODO: this is just an initial guess */ | ||
38 | 7050, | ||
39 | }; | ||
40 | |||
41 | const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = | ||
42 | { | ||
43 | 7000, | ||
44 | }; | ||
45 | |||
46 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ | ||
47 | const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = | ||
48 | { | ||
49 | /* FIXME: Uncalibrated curve */ | ||
50 | { 7000, 7050, 7100, 7150, 7200, 7250, 7300, 7350, 7400, 7450, 7500 } | ||
51 | }; | ||
52 | |||
53 | /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ | ||
54 | const unsigned short percent_to_volt_charge[11] = | ||
55 | /* TODO: simple copy of discharge curve */ | ||
56 | { 7000, 7050, 7100, 7150, 7200, 7250, 7300, 7350, 7400, 7450, 7500 }; | ||
57 | |||
58 | /* full-scale ADC readout (2^10) in millivolt */ | ||
59 | #define BATTERY_SCALE_FACTOR 13000 | ||
60 | |||
61 | /* Returns battery voltage from ADC [millivolts] */ | ||
62 | int _battery_voltage(void) | ||
63 | { | ||
64 | return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 10; | ||
65 | } | ||