/*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define LOG_NIDEBUG 0
#include <errno.h>
#include <inttypes.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <stdlib.h>
#define LOG_TAG "QCOMPowerHAL"
#include <utils/Log.h>
#include <hardware/hardware.h>
#include <hardware/power.h>
#include "utils.h"
#include "metadata-defs.h"
#include "hint-data.h"
#include "performance.h"
#include "power-common.h"
#define BUS_SPEED_PATH "/sys/class/devfreq/qcom,gpubw.70/min_freq"
#define GPU_MAX_FREQ_PATH "/sys/class/kgsl/kgsl-3d0/devfreq/max_freq"
#define GPU_MIN_FREQ_PATH "/sys/class/kgsl/kgsl-3d0/devfreq/min_freq"
#define CPU4_ONLINE_PATH "/sys/devices/system/cpu/cpu4/online"
#define CPU5_ONLINE_PATH "/sys/devices/system/cpu/cpu5/online"
#define CPU6_ONLINE_PATH "/sys/devices/system/cpu/cpu6/online"
#define CPU7_ONLINE_PATH "/sys/devices/system/cpu/cpu7/online"
#define PLATFORM_SLEEP_MODES 2
#define XO_VOTERS 3
#define VMIN_VOTERS 0
#define RPM_PARAMETERS 4
#define NUM_PARAMETERS 10
#ifndef RPM_STAT
#define RPM_STAT "/d/rpm_stats"
#endif
#ifndef RPM_MASTER_STAT
#define RPM_MASTER_STAT "/d/rpm_master_stats"
#endif
/* RPM runs at 19.2Mhz. Divide by 19200 for msec */
#define RPM_CLK 19200
#define USINSEC 1000000L
#define NSINUS 1000L
const char *parameter_names[] = {
"vlow_count",
"accumulated_vlow_time",
"vmin_count",
"accumulated_vmin_time",
"xo_accumulated_duration",
"xo_count",
"xo_accumulated_duration",
"xo_count",
"xo_accumulated_duration",
"xo_count"};
static int saved_dcvs_cpu0_slack_max = -1;
static int saved_dcvs_cpu0_slack_min = -1;
static int saved_mpdecision_slack_max = -1;
static int saved_mpdecision_slack_min = -1;
static int saved_interactive_mode = -1;
static int slack_node_rw_failed = 0;
static int display_hint_sent;
static int sustained_performance_mode = 0;
static int vr_mode = 0;
int display_boost;
static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
static struct hw_module_methods_t power_module_methods = {
.open = NULL,
};
static void power_init(struct power_module *module)
{
ALOGI("QCOM power HAL initing.");
int fd;
char buf[10] = {0};
fd = open("/sys/devices/soc0/soc_id", O_RDONLY);
if (fd >= 0) {
if (read(fd, buf, sizeof(buf) - 1) == -1) {
ALOGW("Unable to read soc_id");
} else {
int soc_id = atoi(buf);
if (soc_id == 194 || (soc_id >= 208 && soc_id <= 218) || soc_id == 178) {
display_boost = 1;
}
}
close(fd);
}
}
static void process_video_decode_hint(void *metadata)
{
char governor[80];
struct video_decode_metadata_t video_decode_metadata;
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
if (metadata) {
ALOGI("Processing video decode hint. Metadata: %s", (char *)metadata);
}
/* Initialize encode metadata struct fields. */
memset(&video_decode_metadata, 0, sizeof(struct video_decode_metadata_t));
video_decode_metadata.state = -1;
video_decode_metadata.hint_id = DEFAULT_VIDEO_DECODE_HINT_ID;
if (metadata) {
if (parse_video_decode_metadata((char *)metadata, &video_decode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return;
}
} else {
return;
}
if (video_decode_metadata.state == 1) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_decode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_30, HISPEED_LOAD_90, HS_FREQ_1026, THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_decode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
}
} else if (video_decode_metadata.state == 0) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(video_decode_metadata.hint_id);
}
}
}
static void process_video_encode_hint(void *metadata)
{
char governor[80];
struct video_encode_metadata_t video_encode_metadata;
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
/* Initialize encode metadata struct fields. */
memset(&video_encode_metadata, 0, sizeof(struct video_encode_metadata_t));
video_encode_metadata.state = -1;
video_encode_metadata.hint_id = DEFAULT_VIDEO_ENCODE_HINT_ID;
if (metadata) {
if (parse_video_encode_metadata((char *)metadata, &video_encode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return;
}
} else {
return;
}
if (video_encode_metadata.state == 1) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {IO_BUSY_OFF, SAMPLING_DOWN_FACTOR_1, THREAD_MIGRATION_SYNC_OFF};
perform_hint_action(video_encode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_30, HISPEED_LOAD_90, HS_FREQ_1026, THREAD_MIGRATION_SYNC_OFF,
INTERACTIVE_IO_BUSY_OFF};
perform_hint_action(video_encode_metadata.hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
}
} else if (video_encode_metadata.state == 0) {
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
undo_hint_action(video_encode_metadata.hint_id);
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(video_encode_metadata.hint_id);
}
}
}
int __attribute__ ((weak)) power_hint_override(struct power_module *module, power_hint_t hint,
void *data)
{
return HINT_NONE;
}
/* Declare function before use */
int interaction(int duration, int num_args, int opt_list[]);
int interaction_with_handle(int lock_handle, int duration, int num_args, int opt_list[]);
static long long calc_timespan_us(struct timespec start, struct timespec end) {
long long diff_in_us = 0;
diff_in_us += (end.tv_sec - start.tv_sec) * USINSEC;
diff_in_us += (end.tv_nsec - start.tv_nsec) / NSINUS;
return diff_in_us;
}
static void power_hint(struct power_module *module, power_hint_t hint,
void *data)
{
static int handle_hotplug = 0;
int resources_hotplug[] = {0x3DFF};
/* Check if this hint has been overridden. */
if (power_hint_override(module, hint, data) == HINT_HANDLED) {
/* The power_hint has been handled. We can skip the rest. */
return;
}
switch(hint) {
case POWER_HINT_VSYNC:
break;
case POWER_HINT_INTERACTION:
{
int duration_hint = 0;
static struct timespec previous_boost_timespec = {0, 0};
// If we are in sustained performance mode or VR mode, touch boost
// should be ignored.
pthread_mutex_lock(&lock);
if (sustained_performance_mode || vr_mode) {
pthread_mutex_unlock(&lock);
return;
}
pthread_mutex_unlock(&lock);
// little core freq bump for 1.5s
int resources[] = {0x20C};
int duration = 1500;
static int handle_little = 0;
// big core freq bump for 500ms
int resources_big[] = {0x2312, 0x1F08};
int duration_big = 500;
static int handle_big = 0;
// sched_downmigrate lowered to 10 for 1s at most
// should be half of upmigrate
int resources_downmigrate[] = {0x4F00};
int duration_downmigrate = 1000;
static int handle_downmigrate = 0;
// sched_upmigrate lowered to at most 20 for 500ms
// set threshold based on elapsed time since last boost
int resources_upmigrate[] = {0x4E00};
int duration_upmigrate = 500;
static int handle_upmigrate = 0;
// set duration hint
if (data) {
duration_hint = *((int*)data);
}
struct timespec cur_boost_timespec;
clock_gettime(CLOCK_MONOTONIC, &cur_boost_timespec);
pthread_mutex_lock(&lock);
long long elapsed_time = calc_timespan_us(previous_boost_timespec, cur_boost_timespec);
if (elapsed_time > 750000)
elapsed_time = 750000;
// don't hint if it's been less than 250ms since last boost
// also detect if we're doing anything resembling a fling
// support additional boosting in case of flings
else if (elapsed_time < 250000 && duration_hint <= 750) {
pthread_mutex_unlock(&lock);
return;
}
previous_boost_timespec = cur_boost_timespec;
pthread_mutex_unlock(&lock);
// 95: default upmigrate for phone
// 20: upmigrate for sporadic touch
// 750ms: a completely arbitrary threshold for last touch
int upmigrate_value = 95 - (int)(75. * ((elapsed_time*elapsed_time) / (750000.*750000.)));
// keep sched_upmigrate high when flinging
if (duration_hint >= 750)
upmigrate_value = 20;
resources_upmigrate[0] = resources_upmigrate[0] | upmigrate_value;
resources_downmigrate[0] = resources_downmigrate[0] | (upmigrate_value / 2);
// modify downmigrate duration based on interaction data hint
// 1000 <= duration_downmigrate <= 5000
// extend little core freq bump past downmigrate to soften downmigrates
if (duration_hint > 1000) {
if (duration_hint < 5000) {
duration_downmigrate = duration_hint;
duration = duration_hint + 750;
} else {
duration_downmigrate = 5000;
duration = 5750;
}
}
handle_little = interaction_with_handle(handle_little,duration, sizeof(resources)/sizeof(resources[0]), resources);
handle_big = interaction_with_handle(handle_big, duration_big, sizeof(resources_big)/sizeof(resources_big[0]), resources_big);
handle_downmigrate = interaction_with_handle(handle_downmigrate, duration_downmigrate, sizeof(resources_downmigrate)/sizeof(resources_downmigrate[0]), resources_downmigrate);
handle_upmigrate = interaction_with_handle(handle_upmigrate, duration_upmigrate, sizeof(resources_upmigrate)/sizeof(resources_upmigrate[0]), resources_upmigrate);
}
break;
case POWER_HINT_VIDEO_ENCODE:
process_video_encode_hint(data);
break;
case POWER_HINT_VIDEO_DECODE:
process_video_decode_hint(data);
break;
/* While the system is Sustained Performance Mode:
* CPUfreq for the little cores are capped to 864MHz
* Big cores are hotplugged out
* GPU frequency is capped to 305 MHz
*/
case POWER_HINT_SUSTAINED_PERFORMANCE:
{
static int handle = 0;
pthread_mutex_lock(&lock);
if (data && sustained_performance_mode == 0) {
int resources[] = {0x1509};
int duration = 0;
handle = interaction_with_handle(handle, duration,
sizeof(resources)/sizeof(resources[0]),
resources);
sysfs_write(GPU_MAX_FREQ_PATH, "305000000");
if (vr_mode == 0) {
handle_hotplug = interaction_with_handle(handle_hotplug, duration,
sizeof(resources_hotplug)/sizeof(resources_hotplug[0]),
resources_hotplug);
}
sustained_performance_mode = 1;
} else if (sustained_performance_mode == 1){
release_request(handle);
sysfs_write(GPU_MAX_FREQ_PATH, "600000000");
if (vr_mode == 0) {
release_request(handle_hotplug);
}
sustained_performance_mode = 0;
}
pthread_mutex_unlock(&lock);
}
break;
case POWER_HINT_VR_MODE:
{
static int handle_vr = 0;
pthread_mutex_lock(&lock);
if (data && vr_mode == 0) {
int resources[] = {0x206};
int duration = 0;
handle_vr = interaction_with_handle(handle_vr, duration,
sizeof(resources)/sizeof(resources[0]),
resources);
sysfs_write(GPU_MIN_FREQ_PATH, "305000000");
sysfs_write(BUS_SPEED_PATH, "7904");
if (sustained_performance_mode == 0) {
handle_hotplug = interaction_with_handle(handle_hotplug, duration,
sizeof(resources_hotplug)/sizeof(resources_hotplug[0]),
resources_hotplug);
}
vr_mode = 1;
} else if (vr_mode == 1){
release_request(handle_vr);
sysfs_write(GPU_MIN_FREQ_PATH, "180000000");
sysfs_write(BUS_SPEED_PATH, "0");
if (sustained_performance_mode == 0) {
release_request(handle_hotplug);
}
vr_mode = 0;
}
pthread_mutex_unlock(&lock);
}
}
}
int __attribute__ ((weak)) set_interactive_override(struct power_module *module, int on)
{
return HINT_NONE;
}
void set_interactive(struct power_module *module, int on)
{
char governor[80];
char tmp_str[NODE_MAX];
struct video_encode_metadata_t video_encode_metadata;
int rc;
if (set_interactive_override(module, on) == HINT_HANDLED) {
return;
}
ALOGI("Got set_interactive hint");
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return;
}
if (!on) {
/* Display off. */
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
int resource_values[] = {DISPLAY_OFF, MS_500, THREAD_MIGRATION_SYNC_OFF};
if (!display_hint_sent) {
perform_hint_action(DISPLAY_STATE_HINT_ID,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
display_hint_sent = 1;
}
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
int resource_values[] = {TR_MS_50, THREAD_MIGRATION_SYNC_OFF};
if (!display_hint_sent) {
perform_hint_action(DISPLAY_STATE_HINT_ID,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
display_hint_sent = 1;
}
} else if ((strncmp(governor, MSMDCVS_GOVERNOR, strlen(MSMDCVS_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(MSMDCVS_GOVERNOR))) {
if (saved_interactive_mode == 1){
/* Display turned off. */
if (sysfs_read(DCVS_CPU0_SLACK_MAX_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
} else {
saved_dcvs_cpu0_slack_max = atoi(tmp_str);
}
if (sysfs_read(DCVS_CPU0_SLACK_MIN_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
} else {
saved_dcvs_cpu0_slack_min = atoi(tmp_str);
}
if (sysfs_read(MPDECISION_SLACK_MAX_NODE, tmp_str, NODE_MAX - 1)) {
if (!slack_node_rw_failed) {
ALOGE("Failed to read from %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
} else {
saved_mpdecision_slack_max = atoi(tmp_str);
}
if (sysfs_read(MPDECISION_SLACK_MIN_NODE, tmp_str, NODE_MAX - 1)) {
if(!slack_node_rw_failed) {
ALOGE("Failed to read from %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
} else {
saved_mpdecision_slack_min = atoi(tmp_str);
}
/* Write new values. */
if (saved_dcvs_cpu0_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_dcvs_cpu0_slack_max);
if (sysfs_write(DCVS_CPU0_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_dcvs_cpu0_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_dcvs_cpu0_slack_min);
if (sysfs_write(DCVS_CPU0_SLACK_MIN_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_mpdecision_slack_max);
if (sysfs_write(MPDECISION_SLACK_MAX_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", 10 * saved_mpdecision_slack_min);
if (sysfs_write(MPDECISION_SLACK_MIN_NODE, tmp_str) != 0) {
if(!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
}
}
}
slack_node_rw_failed = rc;
}
} else {
/* Display on. */
if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
undo_hint_action(DISPLAY_STATE_HINT_ID);
display_hint_sent = 0;
} else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(DISPLAY_STATE_HINT_ID);
display_hint_sent = 0;
} else if ((strncmp(governor, MSMDCVS_GOVERNOR, strlen(MSMDCVS_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(MSMDCVS_GOVERNOR))) {
if (saved_interactive_mode == -1 || saved_interactive_mode == 0) {
/* Display turned on. Restore if possible. */
if (saved_dcvs_cpu0_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_dcvs_cpu0_slack_max);
if (sysfs_write(DCVS_CPU0_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_dcvs_cpu0_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_dcvs_cpu0_slack_min);
if (sysfs_write(DCVS_CPU0_SLACK_MIN_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", DCVS_CPU0_SLACK_MIN_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_max != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_mpdecision_slack_max);
if (sysfs_write(MPDECISION_SLACK_MAX_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MAX_NODE);
}
rc = 1;
}
}
if (saved_mpdecision_slack_min != -1) {
snprintf(tmp_str, NODE_MAX, "%d", saved_mpdecision_slack_min);
if (sysfs_write(MPDECISION_SLACK_MIN_NODE, tmp_str) != 0) {
if (!slack_node_rw_failed) {
ALOGE("Failed to write to %s", MPDECISION_SLACK_MIN_NODE);
}
rc = 1;
}
}
}
slack_node_rw_failed = rc;
}
}
saved_interactive_mode = !!on;
}
static ssize_t get_number_of_platform_modes(struct power_module *module) {
return PLATFORM_SLEEP_MODES;
}
static int get_voter_list(struct power_module *module, size_t *voter) {
voter[0] = XO_VOTERS;
voter[1] = VMIN_VOTERS;
return 0;
}
static int extract_stats(uint64_t *list, char *file,
unsigned int num_parameters, unsigned int index) {
FILE *fp;
ssize_t read;
size_t len;
char *line;
int ret;
fp = fopen(file, "r");
if (fp == NULL) {
ret = -errno;
ALOGE("%s: failed to open: %s", __func__, strerror(errno));
return ret;
}
for (line = NULL, len = 0;
((read = getline(&line, &len, fp) != -1) && (index < num_parameters));
free(line), line = NULL, len = 0) {
uint64_t value;
char* offset;
size_t begin = strspn(line, " \t");
if (strncmp(line + begin, parameter_names[index], strlen(parameter_names[index]))) {
continue;
}
offset = memchr(line, ':', len);
if (!offset) {
continue;
}
if (!strcmp(file, RPM_MASTER_STAT)) {
/* RPM_MASTER_STAT is reported in hex */
sscanf(offset, ":%" SCNx64, &value);
/* Duration is reported in rpm SLEEP TICKS */
if (!strcmp(parameter_names[index], "xo_accumulated_duration")) {
value /= RPM_CLK;
}
} else {
/* RPM_STAT is reported in decimal */
sscanf(offset, ":%" SCNu64, &value);
}
list[index] = value;
index++;
}
free(line);
fclose(fp);
return 0;
}
static int get_platform_low_power_stats(struct power_module *module,
power_state_platform_sleep_state_t *list) {
uint64_t stats[sizeof(parameter_names)] = {0};
int ret;
if (!list) {
return -EINVAL;
}
ret = extract_stats(stats, RPM_STAT, RPM_PARAMETERS, 0);
if (ret) {
return ret;
}
ret = extract_stats(stats, RPM_MASTER_STAT, NUM_PARAMETERS, 4);
if (ret) {
return ret;
}
/* Update statistics for XO_shutdown */
strcpy(list[0].name, "XO_shutdown");
list[0].total_transitions = stats[0];
list[0].residency_in_msec_since_boot = stats[1];
list[0].supported_only_in_suspend = false;
list[0].number_of_voters = XO_VOTERS;
/* Update statistics for APSS voter */
strcpy(list[0].voters[0].name, "APSS");
list[0].voters[0].total_time_in_msec_voted_for_since_boot = stats[4];
list[0].voters[0].total_number_of_times_voted_since_boot = stats[5];
/* Update statistics for MPSS voter */
strcpy(list[0].voters[1].name, "MPSS");
list[0].voters[1].total_time_in_msec_voted_for_since_boot = stats[6];
list[0].voters[1].total_number_of_times_voted_since_boot = stats[7];
/* Update statistics for LPASS voter */
strcpy(list[0].voters[2].name, "LPASS");
list[0].voters[2].total_time_in_msec_voted_for_since_boot = stats[8];
list[0].voters[2].total_number_of_times_voted_since_boot = stats[9];
/* Update statistics for VMIN state */
strcpy(list[1].name, "VMIN");
list[1].total_transitions = stats[2];
list[1].residency_in_msec_since_boot = stats[3];
list[1].supported_only_in_suspend = false;
list[1].number_of_voters = VMIN_VOTERS;
return 0;
}
struct power_module HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = POWER_MODULE_API_VERSION_0_5,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = POWER_HARDWARE_MODULE_ID,
.name = "QCOM Power HAL",
.author = "Qualcomm",
.methods = &power_module_methods,
},
.init = power_init,
.powerHint = power_hint,
.setInteractive = set_interactive,
.get_number_of_platform_modes = get_number_of_platform_modes,
.get_platform_low_power_stats = get_platform_low_power_stats,
.get_voter_list = get_voter_list
};