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soc: qcom: qti_battery_debug: add support for 2S battery context dump

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Currently, qti_battery_debug driver supports collecting QBG
context dump only for 1S battery. Add support to collect QBG
context dump for more than single cell to support 2S battery.
User can set "battery_cell_id" to select the QBG context dump
they would like to receive from the charger firmware that runs
on a remote subsystem.

Change-Id: I863b908a8c5bfae441431d31ac4dc8a491a0310c
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2021-01-07 20:31:32 -08:00 committed by Anjelique Melendez
parent d9197e1de2
commit ad98e248e2
1 changed files with 58 additions and 16 deletions
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74
drivers/soc/qcom/qti_battery_debug.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "BATTERY_DBG: %s: " fmt, __func__
@ -57,6 +57,7 @@ struct votable {
struct qbg_context_req_msg {
struct pmic_glink_hdr hdr;
u32 battery_cell_id;
};
struct qbg_context_resp_msg {
@ -101,6 +102,7 @@ struct battery_dbg_dev {
struct all_votables_data all_data;
struct votable *votable;
u8 override_voter_id;
u32 battery_cell_id;
};
static int battery_dbg_write(struct battery_dbg_dev *bd, void *data, size_t len)
@ -263,18 +265,6 @@ static int battery_dbg_callback(void *priv, void *data, size_t len)
return 0;
}
static int get_qbg_context_write(void *data, u64 val)
{
struct battery_dbg_dev *bd = data;
struct qbg_context_req_msg req_msg = { { 0 } };
req_msg.hdr.owner = MSG_OWNER_BD;
req_msg.hdr.type = MSG_TYPE_REQ_RESP;
req_msg.hdr.opcode = BD_QBG_DUMP_REQ;
return battery_dbg_write(bd, &req_msg, sizeof(req_msg));
}
#ifdef CONFIG_DEBUG_FS
static int battery_dbg_request_read_votable(struct battery_dbg_dev *bd,
u32 id)
@ -658,6 +648,19 @@ static void battery_dbg_add_debugfs(struct battery_dbg_dev *bd)
}
#endif
static int get_qbg_context_write(void *data, u64 val)
{
struct battery_dbg_dev *bd = data;
struct qbg_context_req_msg req_msg = { { 0 } };
req_msg.hdr.owner = MSG_OWNER_BD;
req_msg.hdr.type = MSG_TYPE_REQ_RESP;
req_msg.hdr.opcode = BD_QBG_DUMP_REQ;
req_msg.battery_cell_id = bd->battery_cell_id;
return battery_dbg_write(bd, &req_msg, sizeof(req_msg));
}
static ssize_t qbg_blob_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t pos, size_t count)
@ -693,6 +696,44 @@ static struct bin_attribute qbg_blob = {
.write = qbg_blob_write,
};
static ssize_t battery_cell_id_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct battery_dbg_dev *bd = dev_get_drvdata(dev);
return scnprintf(buf, PAGE_SIZE, "%u\n", bd->battery_cell_id);
}
static ssize_t battery_cell_id_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct battery_dbg_dev *bd = dev_get_drvdata(dev);
if (kstrtou32(buf, 0, &bd->battery_cell_id))
return -EINVAL;
return count;
}
static DEVICE_ATTR_RW(battery_cell_id);
static struct attribute *battery_dbg_attrs[] = {
&dev_attr_battery_cell_id.attr,
NULL,
};
static struct bin_attribute *battery_dbg_bin_attrs[] = {
&qbg_blob,
NULL,
};
static const struct attribute_group battery_dbg_group = {
.attrs = battery_dbg_attrs,
.bin_attrs = battery_dbg_bin_attrs,
};
static int battery_dbg_add_dev_attr(struct battery_dbg_dev *bd)
{
int rc;
@ -700,10 +741,10 @@ static int battery_dbg_add_dev_attr(struct battery_dbg_dev *bd)
bd->qbg_blob.data = bd->qbg_dump.buf;
bd->qbg_blob.size = 0;
rc = device_create_bin_file(bd->dev, &qbg_blob);
rc = sysfs_create_group(&bd->dev->kobj, &battery_dbg_group);
if (rc)
dev_err(bd->dev, "Failed to create qbg_context bin file: %d\n",
rc);
dev_err(bd->dev, "Failed to create sysfs files for qbg_context: %d\n",
rc);
return rc;
}
@ -754,6 +795,7 @@ static int battery_dbg_remove(struct platform_device *pdev)
struct battery_dbg_dev *bd = platform_get_drvdata(pdev);
int rc;
sysfs_remove_group(&bd->dev->kobj, &battery_dbg_group);
debugfs_remove_recursive(bd->debugfs_dir);
rc = pmic_glink_unregister_client(bd->client);
if (rc < 0) {