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ypr0: Enable battery voltage read-out, charging monitoring and charger detection.
Voltage can be read using as3543 adc (i.e. ascodec api, on this target implemented via ioctl()). TODO: Look into possibly controlling charging more by re-using powermgmt-ascodec.c. However, charging seems to be controlled by the kernel, so may not be needed. Charger state can be read using /dev/minivet. It allows to differentiate between wall charger and usb charging, but that's not implemented (is it even worthwhile?) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31470 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz
parent
07605a659e
commit
05f12e0877
12 changed files with 195 additions and 108 deletions
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@ -17,117 +17,72 @@
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include <time.h>
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#include <sys/ioctl.h>
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#include "kernel.h"
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#include "powermgmt.h"
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#include "power.h"
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#include "file.h"
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#include "ascodec-target.h"
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#include "stdio.h"
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#include "as3514.h"
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#include "sc900776.h"
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#if 0 /*still unused*/
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/* The battery manufacturer's website shows discharge curves down to 3.0V,
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so 'dangerous' and 'shutoff' levels of 3.4V and 3.3V should be safe.
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*/
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3550
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3500
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};
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/* the OF shuts down at this voltage */
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3450
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
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/* FIXME: This is guessed. Make proper curve using battery_bench */
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const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
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{
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{ 3300, 3692, 3740, 3772, 3798, 3828, 3876, 3943, 4013, 4094, 4194 }
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{ 3450, 3692, 3740, 3772, 3798, 3828, 3876, 3943, 4013, 4094, 4194 }
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};
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#if CONFIG_CHARGING
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
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const unsigned short percent_to_volt_charge[11] =
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/* FIXME: This is guessed. Make proper curve using battery_bench */
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const unsigned short const percent_to_volt_charge[11] =
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{
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3417, 3802, 3856, 3888, 3905, 3931, 3973, 4025, 4084, 4161, 4219
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3600, 3802, 3856, 3888, 3905, 3931, 3973, 4025, 4084, 4161, 4219
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};
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#endif /* CONFIG_CHARGING */
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#endif
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#define BATT_MINMVOLT 3450 /* minimum millivolts of battery */
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#define BATT_MAXMVOLT 4150 /* maximum millivolts of battery */
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#define BATT_MAXRUNTIME (10 * 60) /* maximum runtime with full battery in
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minutes */
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extern void send_battery_level_event(void);
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extern int last_sent_battery_level;
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extern int battery_percent;
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static unsigned int battery_millivolts = BATT_MAXMVOLT;
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/* estimated remaining time in minutes */
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static int powermgmt_est_runningtime_min = BATT_MAXRUNTIME;
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static void battery_status_update(void)
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unsigned int power_input_status(void)
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{
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static time_t last_change = 0;
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time_t now;
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time(&now);
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if (last_change < now) {
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last_change = now;
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battery_percent = 100 * (battery_millivolts - BATT_MINMVOLT) /
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(BATT_MAXMVOLT - BATT_MINMVOLT);
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powermgmt_est_runningtime_min =
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battery_percent * BATT_MAXRUNTIME / 100;
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unsigned status = POWER_INPUT_NONE;
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int fd = open("/dev/minivet", O_RDONLY);
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if (fd >= 0)
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{
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if (ioctl(fd, IOCTL_MINIVET_DET_VBUS, NULL) > 0)
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status = POWER_INPUT_MAIN_CHARGER;
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close(fd);
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}
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send_battery_level_event();
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return status;
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}
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void battery_read_info(int *voltage, int *level)
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#endif /* CONFIG_CHARGING */
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/* Returns battery voltage from ADC [millivolts],
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* adc returns voltage in 5mV steps */
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unsigned int battery_adc_voltage(void)
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{
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battery_status_update();
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if (voltage)
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*voltage = battery_millivolts;
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if (level)
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*level = battery_percent;
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return adc_read(3) * 5;
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}
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unsigned int battery_voltage(void)
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bool charging_state(void)
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{
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battery_status_update();
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return battery_millivolts;
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}
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/* cannot make this static (initializer not constant error), but gcc
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* seems to calculate at compile time anyway */
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const unsigned short charged_thres =
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((percent_to_volt_charge[9] + percent_to_volt_charge[10]) / 2);
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int battery_level(void)
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{
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battery_status_update();
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return battery_percent;
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bool ret = (power_input_status() == POWER_INPUT_MAIN_CHARGER);
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/* dont indicate for > ~95% */
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return ret && (battery_adc_voltage() <= charged_thres);
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}
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int battery_time(void)
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{
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battery_status_update();
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return powermgmt_est_runningtime_min;
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}
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bool battery_level_safe(void)
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{
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return battery_level() >= 10;
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}
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void set_battery_capacity(int capacity)
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{
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(void)capacity;
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}
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#if BATTERY_TYPES_COUNT > 1
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void set_battery_type(int type)
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{
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(void)type;
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}
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#endif
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134
firmware/target/hosted/ypr0/sc900776.h
Normal file
134
firmware/target/hosted/ypr0/sc900776.h
Normal file
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@ -0,0 +1,134 @@
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/* This file originates from the linux kernel provided in Samsung's YP-R0 Open
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* Source package.
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*/
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/*
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* Bigbang project
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* Copyright (c) 2009 VPS R&D Group, Samsung Electronics, Inc.
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* All rights reserved.
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*/
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/**
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* This file defines data structures and APIs for Freescale SC900776
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*
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* @name sc900776.h
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* @author Eung Chan Kim (eungchan.kim@samsung.com)
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* @version 0.1
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* @see
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*/
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#ifndef __SC900776_H__
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#define __SC900776_H__
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typedef enum
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{
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SC900776_DEVICE_ID = 0x01, /* 01h R */
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SC900776_CONTROL, /* 02h R/W */
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SC900776_INTERRUPT1, /* 03h R/C */
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SC900776_INTERRUPT2, /* 04h R/C */
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SC900776_INTERRUPT_MASK1, /* 05h R/W */
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SC900776_INTERRUPT_MASK2, /* 06h R/W */
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SC900776_ADC_RESULT, /* 07h R */
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SC900776_TIMING_SET1, /* 08h R/W */
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SC900776_TIMING_SET2, /* 09h R/W */
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SC900776_DEVICE_TYPE1, /* 0Ah R */
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SC900776_DEVICE_TYPE2, /* 0Bh R */
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SC900776_BUTTON1, /* 0Ch R/C */
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SC900776_BUTTON2, /* 0Dh R/C */
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/* 0Eh ~ 12h : reserved */
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SC900776_MANUAL_SWITCH1 = 0x13, /* 13h R/W */
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SC900776_MANUAL_SWITCH2, /* 14h R/W */
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/* 15h ~ 1Fh : reserved */
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SC900776_FSL_STATUS = 0x20, /* 20h R */
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SC900776_FSL_CONTROL, /* 21h R/W */
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SC900776_TIME_DELAY, /* 22h R/W */
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SC900776_DEVICE_MODE, /* 23h R/W */
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SC900776_REG_MAX
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} eSc900776_register_t;
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typedef enum
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{
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DEVICETYPE1_UNDEFINED = 0,
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DEVICETYPE1_USB, // 0x04 0x00 // normal usb cable & ad200
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DEVICETYPE1_DEDICATED, // 0x40 0x00 // dedicated charger cable
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DEVICETYPE2_JIGUARTON, // 0x00 0x08 // Anygate_UART jig
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DEVICETYPE2_JIGUSBOFF, // 0x00 0x01 // USB jig(AS center)
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DEVICETYPE2_JIGUSBON, // 0x00 0x02 // Anygate_USB jig with boot-on, not tested
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} eMinivet_device_t;
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/*
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* sc900776 register bit definitions
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*/
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#define MINIVET_DEVICETYPE1_USBOTG 0x80 /* 1: a USBOTG device is attached */
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#define MINIVET_DEVICETYPE1_DEDICATED 0x40 /* 1: a dedicated charger is attached */
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#define MINIVET_DEVICETYPE1_USBCHG 0x20 /* 1: a USB charger is attached */
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#define MINIVET_DEVICETYPE1_5WCHG 0x10 /* 1: a 5-wire charger (type 1 or 2) is attached */
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#define MINIVET_DEVICETYPE1_UART 0x08 /* 1: a UART cable is attached */
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#define MINIVET_DEVICETYPE1_USB 0x04 /* 1: a USB host is attached */
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#define MINIVET_DEVICETYPE1_AUDIO2 0x02 /* 1: an audio accessory type 2 is attached */
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#define MINIVET_DEVICETYPE1_AUDIO1 0x01 /* 1: an audio accessory type 1 is attached */
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#define MINIVET_DEVICETYPE2_AV 0x40 /* 1: an audio/video cable is attached */
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#define MINIVET_DEVICETYPE2_TTY 0x20 /* 1: a TTY converter is attached */
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#define MINIVET_DEVICETYPE2_PPD 0x10 /* 1: a phone powered device is attached */
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#define MINIVET_DEVICETYPE2_JIGUARTON 0x08 /* 1: a UART jig cable with the BOOT-on option is attached */
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#define MINIVET_DEVICETYPE2_JIGUARTOFF 0x04 /* 1: a UART jig cable with the BOOT-off option is attached */
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#define MINIVET_DEVICETYPE2_JIGUSBON 0x02 /* 1: a USB jig cable with the BOOT-on option is attached */
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#define MINIVET_DEVICETYPE2_JIGUSBOFF 0x01 /* 1: a USB jig cable with the BOOT-off option is attached */
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#define MINIVET_FSLSTATUS_FETSTATUS 0x40 /* 1: The on status of the power MOSFET */
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#define MINIVET_FSLSTATUS_IDDETEND 0x20 /* 1: ID resistance detection finished */
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#define MINIVET_FSLSTATUS_VBUSDETEND 0x10 /* 1: VBUS power supply type identification completed */
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#define MINIVET_FSLSTATUS_IDGND 0x08 /* 1: ID pin is shorted to ground */
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#define MINIVET_FSLSTATUS_IDFLOAT 0x04 /* 1: ID line is floating */
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#define MINIVET_FSLSTATUS_VBUSDET 0x02 /* 1: VBUS voltage is higher than the POR */
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#define MINIVET_FSLSTATUS_ADCSTATUS 0x01 /* 1: ADC conversion completed */
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#define SC900776_I2C_SLAVE_ADDR 0x25
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typedef struct {
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unsigned char addr;
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unsigned char value;
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}__attribute__((packed)) sMinivet_t;
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#define DRV_IOCTL_MINIVET_MAGIC 'M'
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typedef enum
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{
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E_IOCTL_MINIVET_INIT = 0,
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E_IOCTL_MINIVET_WRITE_BYTE,
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E_IOCTL_MINIVET_READ_BYTE,
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E_IOCTL_MINIVET_DET_VBUS,
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E_IOCTL_MINIVET_MANUAL_USB,
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E_IOCTL_MINIVET_MANUAL_UART,
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E_IOCTL_MINIVET_MAX
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} eSc900776_ioctl_t;
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#define IOCTL_MINIVET_INIT _IO(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_INIT)
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#define IOCTL_MINIVET_WRITE_BYTE _IOW(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_WRITE_BYTE, sMinivet_t)
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#define IOCTL_MINIVET_READ_BYTE _IOR(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_READ_BYTE, sMinivet_t)
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#define IOCTL_MINIVET_DET_VBUS _IO(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_DET_VBUS)
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#define IOCTL_MINIVET_MANUAL_USB _IO(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_MANUAL_USB)
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#define IOCTL_MINIVET_MANUAL_UART _IO(DRV_IOCTL_MINIVET_MAGIC, E_IOCTL_MINIVET_MANUAL_UART)
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#ifndef __MINIVET_ENUM__
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#define __MINIVET_ENUM__
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enum
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{
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EXT_PWR_UNPLUGGED = 0,
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EXT_PWR_PLUGGED,
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EXT_PWR_NOT_OVP,
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EXT_PWR_OVP,
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};
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#endif /* __MINIVET_ENUM__ */
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#endif /* __MINIVET_IOCTL_H__ */
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@ -32,16 +32,11 @@
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#include "ascodec-target.h"
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void sim_do_exit(void)
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{
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exit(EXIT_SUCCESS);
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}
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void shutdown_hw(void)
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void power_off(void)
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{
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/* Something that we need to do before exit on our platform YPR0 */
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ascodec_close();
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sim_do_exit();
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exit(EXIT_SUCCESS);
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}
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uintptr_t *stackbegin;
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@ -62,7 +57,7 @@ void system_init(void)
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void system_reboot(void)
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{
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sim_do_exit();
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power_off();
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}
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void system_exception_wait(void)
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