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power: qti_battery_charger: support configuring wireless FW update time

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Currently, during wireless FW update process, qti_battery_charger
driver waits for FW update status for a period of 1 second after
sending all of the FW chunks. This wireless FW update time depends
on the wireless transceiver being used. E.g. IDT9412 needed only
1 second but IDT9415 requires up to 2 seconds as computing and
validating the CRC seems to be consuming more time. To support
such variance in wireless FW update time, add a parameter which
can be configured at runtime.

This can be configured (in ms) as below.

  echo 2000 > /sys/class/qcom-battery/wireless_fw_update_time_ms

Change-Id: Ifa8104544138254e1029ab1fcaa9f40e61cc0961
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2021-04-13 14:28:57 -07:00 committed by Anjelique Melendez
parent 4ee00f5530
commit 648cd70546
1 changed files with 30 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/power/supply/qti_battery_charger.c
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@ -235,6 +235,7 @@ struct battery_chg_dev {
bool wls_fw_update_reqd;
u32 wls_fw_version;
u16 wls_fw_crc;
u32 wls_fw_update_time_ms;
struct notifier_block reboot_notifier;
u32 thermal_fcc_ua;
u32 restrict_fcc_ua;
@ -1335,13 +1336,16 @@ static int wireless_fw_update(struct battery_chg_dev *bcdev, bool force)
goto release_fw;
}
pr_debug("Waiting for fw_update_ack\n");
rc = wait_for_completion_timeout(&bcdev->fw_update_ack,
msecs_to_jiffies(WLS_FW_UPDATE_TIME_MS));
msecs_to_jiffies(bcdev->wls_fw_update_time_ms));
if (!rc) {
pr_err("Error, timed out updating firmware\n");
rc = -ETIMEDOUT;
goto release_fw;
} else {
pr_debug("Waited for %d ms\n",
bcdev->wls_fw_update_time_ms - jiffies_to_msecs(rc));
rc = 0;
}
@ -1356,6 +1360,29 @@ static int wireless_fw_update(struct battery_chg_dev *bcdev, bool force)
return rc;
}
static ssize_t wireless_fw_update_time_ms_store(struct class *c,
struct class_attribute *attr,
const char *buf, size_t count)
{
struct battery_chg_dev *bcdev = container_of(c, struct battery_chg_dev,
battery_class);
if (kstrtou32(buf, 0, &bcdev->wls_fw_update_time_ms))
return -EINVAL;
return count;
}
static ssize_t wireless_fw_update_time_ms_show(struct class *c,
struct class_attribute *attr, char *buf)
{
struct battery_chg_dev *bcdev = container_of(c, struct battery_chg_dev,
battery_class);
return scnprintf(buf, PAGE_SIZE, "%u\n", bcdev->wls_fw_update_time_ms);
}
static CLASS_ATTR_RW(wireless_fw_update_time_ms);
static ssize_t wireless_fw_crc_store(struct class *c,
struct class_attribute *attr,
const char *buf, size_t count)
@ -1719,6 +1746,7 @@ static struct attribute *battery_class_attrs[] = {
&class_attr_wireless_fw_force_update.attr,
&class_attr_wireless_fw_version.attr,
&class_attr_wireless_fw_crc.attr,
&class_attr_wireless_fw_update_time_ms.attr,
&class_attr_ship_mode_en.attr,
&class_attr_restrict_chg.attr,
&class_attr_restrict_cur.attr,
@ -1948,6 +1976,7 @@ static int battery_chg_probe(struct platform_device *pdev)
goto error;
}
bcdev->wls_fw_update_time_ms = WLS_FW_UPDATE_TIME_MS;
battery_chg_add_debugfs(bcdev);
battery_chg_notify_enable(bcdev);
device_init_wakeup(bcdev->dev, true);