Release 4.14 arch/sh/boards/mach-hp6xx/hp6xx_apm.c
/*
* bios-less APM driver for hp680
*
* Copyright 2005 (c) Andriy Skulysh <askulysh@gmail.com>
* Copyright 2008 (c) Kristoffer Ericson <kristoffer.ericson@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/apm-emulation.h>
#include <linux/io.h>
#include <asm/adc.h>
#include <mach/hp6xx.h>
/* percentage values */
#define APM_CRITICAL 10
#define APM_LOW 30
/* resonably sane values */
#define HP680_BATTERY_MAX 898
#define HP680_BATTERY_MIN 486
#define HP680_BATTERY_AC_ON 1023
#define MODNAME "hp6x0_apm"
#define PGDR 0xa400012c
static void hp6x0_apm_get_power_status(struct apm_power_info *info)
{
int battery, backup, charging, percentage;
u8 pgdr;
battery = adc_single(ADC_CHANNEL_BATTERY);
backup = adc_single(ADC_CHANNEL_BACKUP);
charging = adc_single(ADC_CHANNEL_CHARGE);
percentage = 100 * (battery - HP680_BATTERY_MIN) /
(HP680_BATTERY_MAX - HP680_BATTERY_MIN);
/* % of full battery */
info->battery_life = percentage;
/* We want our estimates in minutes */
info->units = 0;
/* Extremely(!!) rough estimate, we will replace this with a datalist later on */
info->time = (2 * battery);
info->ac_line_status = (battery > HP680_BATTERY_AC_ON) ?
APM_AC_ONLINE : APM_AC_OFFLINE;
pgdr = __raw_readb(PGDR);
if (pgdr & PGDR_MAIN_BATTERY_OUT) {
info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
info->battery_flag = 0x80;
} else if (charging < 8) {
info->battery_status = APM_BATTERY_STATUS_CHARGING;
info->battery_flag = 0x08;
info->ac_line_status = 0x01;
} else if (percentage <= APM_CRITICAL) {
info->battery_status = APM_BATTERY_STATUS_CRITICAL;
info->battery_flag = 0x04;
} else if (percentage <= APM_LOW) {
info->battery_status = APM_BATTERY_STATUS_LOW;
info->battery_flag = 0x02;
} else {
info->battery_status = APM_BATTERY_STATUS_HIGH;
info->battery_flag = 0x01;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andriy Skulysh | 138 | 65.71% | 1 | 25.00% |
| Paul Mundt | 45 | 21.43% | 2 | 50.00% |
| Kristoffer Ericson | 27 | 12.86% | 1 | 25.00% |
| Total | 210 | 100.00% | 4 | 100.00% |
static irqreturn_t hp6x0_apm_interrupt(int irq, void *dev)
{
if (!APM_DISABLED)
apm_queue_event(APM_USER_SUSPEND);
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andriy Skulysh | 25 | 96.15% | 1 | 50.00% |
| Kristoffer Ericson | 1 | 3.85% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static int __init hp6x0_apm_init(void)
{
int ret;
ret = request_irq(HP680_BTN_IRQ, hp6x0_apm_interrupt,
0, MODNAME, NULL);
if (unlikely(ret < 0)) {
printk(KERN_ERR MODNAME ": IRQ %d request failed\n",
HP680_BTN_IRQ);
return ret;
}
apm_get_power_status = hp6x0_apm_get_power_status;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andriy Skulysh | 52 | 92.86% | 1 | 33.33% |
| Paul Mundt | 3 | 5.36% | 1 | 33.33% |
| Yong Zhang | 1 | 1.79% | 1 | 33.33% |
| Total | 56 | 100.00% | 3 | 100.00% |
static void __exit hp6x0_apm_exit(void)
{
free_irq(HP680_BTN_IRQ, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andriy Skulysh | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
module_init(hp6x0_apm_init);
module_exit(hp6x0_apm_exit);
MODULE_AUTHOR("Adriy Skulysh");
MODULE_DESCRIPTION("hp6xx Advanced Power Management");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andriy Skulysh | 298 | 76.80% | 1 | 12.50% |
| Paul Mundt | 55 | 14.18% | 4 | 50.00% |
| Kristoffer Ericson | 34 | 8.76% | 2 | 25.00% |
| Yong Zhang | 1 | 0.26% | 1 | 12.50% |
| Total | 388 | 100.00% | 8 | 100.00% |
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