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Find the battery profile by serial number

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Support the way to find the battery profile by serial
number of battery in battid utags.

Change-Id: I05b3368e151b153ba20417b34cd1c73cfe3c9754
Signed-off-by: yanyh2 <yanyh2@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1178205
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Lu Chai <chailu1@motorola.com>
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
Reviewed-on: https://gerrit.mot.com/1338748
Reviewed-by: Huosheng Liao <liaohs@motorola.com>
Reviewed-by: Haijian Ma <mahj8@motorola.com>
Reviewed-on: https://gerrit.mot.com/1447561
Reviewed-on: https://gerrit.mot.com/1771166
This commit is contained in:
yanyh2 2018-05-22 14:58:35 +08:00 • committed by Xiaojun Ji
commit 7cd790dd94
1 changed files with 86 additions and 0 deletions
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86
drivers/power/supply/qcom/battery-profile-loader.c
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@ -42,6 +42,88 @@ static int of_batterydata_read_batt_id_kohm(const struct device_node *np,
return 0;
}
static const char *get_battery_serialnumber(void)
{
struct device_node *np = of_find_node_by_path("/chosen");
const char *battsn_buf;
int retval;
battsn_buf = NULL;
if (np)
retval = of_property_read_string(np, "mmi,battid",
&battsn_buf);
else
return NULL;
if ((retval == -EINVAL) || !battsn_buf) {
pr_err("Battsn unused\n");
of_node_put(np);
return NULL;
} else
pr_err("Battsn = %s\n", battsn_buf);
of_node_put(np);
return battsn_buf;
}
static struct device_node *get_profile_by_serialnumber(
const struct device_node *np)
{
struct device_node *node, *df_node, *sn_node;
const char *sn_buf, *df_sn, *dev_sn;
int rc;
if (!np)
return NULL;
dev_sn = NULL;
df_sn = NULL;
sn_buf = NULL;
df_node = NULL;
sn_node = NULL;
dev_sn = get_battery_serialnumber();
rc = of_property_read_string(np, "df-serialnum",
&df_sn);
if (rc)
pr_warn("No Default Serial Number defined\n");
else if (df_sn)
pr_info("Default Serial Number %s\n", df_sn);
for_each_child_of_node(np, node) {
rc = of_property_read_string(node, "serialnum",
&sn_buf);
if (!rc && sn_buf) {
if (dev_sn)
if (strnstr(dev_sn, sn_buf, 32))
sn_node = node;
if (df_sn)
if (strnstr(df_sn, sn_buf, 32))
df_node = node;
}
}
if (sn_node) {
node = sn_node;
df_node = NULL;
pr_info("Battery Match Found using %s\n", sn_node->name);
} else if (df_node) {
node = df_node;
sn_node = NULL;
pr_info("Battery Match Found using default %s\n",
df_node->name);
} else {
pr_warn("No Battery Match Found!\n");
return NULL;
}
return node;
}
struct device_node *of_batterydata_get_best_profile(
const struct device_node *batterydata_container_node,
int batt_id_kohm, const char *batt_type)
@ -66,6 +148,10 @@ struct device_node *of_batterydata_get_best_profile(
}
}
best_node = get_profile_by_serialnumber(batterydata_container_node);
if (best_node)
return best_node;
/*
* Find the battery data with a battery id resistor closest to this one
*/