75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
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#include <stdio.h>
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#include <sys/ioctl.h>
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#include "apm.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "sonypi.h"
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signed int spicfd = -1;
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int sonypi_supported (void) {
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if ((spicfd = open("/dev/sonypi", O_RDWR)) == -1)
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return 0;
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else
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return 1;
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}
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inline int sonypi_ioctl(int ioctlno, void *param) {
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if (ioctl(spicfd, ioctlno, param) < 0)
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return 0;
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else
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return 1;
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}
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/* Read battery info from sonypi device and shove it into an apm_info
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* struct. */
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int sonypi_read (apm_info *info) {
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__u8 batflags;
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__u16 cap, rem;
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int havebatt = 0;
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info->using_minutes = info->battery_flags = 0;
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if (! sonypi_ioctl(SONYPI_IOCGBATFLAGS, &batflags)) {
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return 1;
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}
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info->ac_line_status = (batflags & SONYPI_BFLAGS_AC) != 0;
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if (batflags & SONYPI_BFLAGS_B1) {
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if (! sonypi_ioctl(SONYPI_IOCGBAT1CAP, &cap))
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return 1;
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if (! sonypi_ioctl(SONYPI_IOCGBAT1REM, &rem))
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return 1;
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havebatt = 1;
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}
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else if (batflags & SONYPI_BFLAGS_B2) {
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/* Not quite right, if there is a second battery I should
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* probably merge the two somehow.. */
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if (! sonypi_ioctl(SONYPI_IOCGBAT2CAP, &cap))
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return 1;
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if (! sonypi_ioctl(SONYPI_IOCGBAT2REM, &rem))
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return 1;
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havebatt = 1;
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}
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else {
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info->battery_percentage = 0;
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info->battery_status = BATTERY_STATUS_ABSENT;
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}
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if (havebatt) {
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info->battery_percentage = 100 * rem / cap;
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/* Guess at whether the battery is charging. */
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if (info->battery_percentage < 99 && info->ac_line_status == 1) {
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info->battery_flags = info->battery_flags | BATTERY_FLAGS_CHARGING;
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info->battery_status = BATTERY_STATUS_CHARGING;
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}
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}
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/* Sadly, there is no way to estimate this. */
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info->battery_time = 0;
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return 0;
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}
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