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drivers: thermal: Add ipc logging support for tsens driver

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Add ipc logging support to tsens driver. It enables two separate ipc
logging circular buffer for tsens. The first one dumps different
temperature sensor read value whenever there is a read request.
The second one dumps different sensor thresholds, interrupt status etc.
whenever there is tsens interrupt trigger or set trip call from
thermal framework.

Change-Id: Ib7964571547c222838b1fa45a19b3bdb7b837116
Signed-off-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
This commit is contained in:
Manaf Meethalavalappu Pallikunhi 2021-12-16 23:23:39 +05:30 committed by Rashid Zafar
parent 240423ee6b
commit 70627fa6e2
2 changed files with 50 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/thermal/qcom/tsens.c
View File

@ -2,6 +2,7 @@
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
* Copyright (c) 2019, 2020, Linaro Ltd.
* Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/debugfs.h>
@ -264,7 +265,7 @@ static void tsens_set_interrupt_v2(struct tsens_priv *priv, u32 hw_id,
static void tsens_set_interrupt(struct tsens_priv *priv, u32 hw_id,
enum tsens_irq_type irq_type, bool enable)
{
dev_dbg(priv->dev, "[%u] %s: %s -> %s\n", hw_id, __func__,
TSENS_DBG_1(priv, "[%u] %s: %s -> %s\n", hw_id, __func__,
irq_type ? ((irq_type == 1) ? "UP" : "CRITICAL") : "LOW",
enable ? "en" : "dis");
if (tsens_version(priv) > VER_1_X)
@ -348,7 +349,7 @@ static int tsens_read_irq_state(struct tsens_priv *priv, u32 hw_id,
d->up_thresh = tsens_hw_to_mC(s, UP_THRESH_0 + hw_id);
d->low_thresh = tsens_hw_to_mC(s, LOW_THRESH_0 + hw_id);
dev_dbg(priv->dev, "[%u] %s%s: status(%u|%u|%u) | clr(%u|%u|%u) | mask(%u|%u|%u)\n",
TSENS_DBG_1(priv, "[%u] %s%s: status(%u|%u|%u) | clr(%u|%u|%u) | mask(%u|%u|%u)\n",
hw_id, __func__,
(d->up_viol || d->low_viol || d->crit_viol) ? "(V)" : "",
d->low_viol, d->up_viol, d->crit_viol,
@ -407,7 +408,7 @@ static irqreturn_t tsens_critical_irq_thread(int irq, void *data)
if (ret)
return ret;
if (wdog_count)
dev_dbg(priv->dev, "%s: watchdog count: %d\n",
TSENS_DBG_1(priv, "%s: watchdog count: %d\n",
__func__, wdog_count);
/* Fall through to handle critical interrupts if any */
@ -528,6 +529,7 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
break;
}
}
TSENS_DBG_1(priv, "%s: irq[%d] exit", __func__, irq);
return IRQ_HANDLED;
}
@ -570,7 +572,7 @@ static int tsens_set_trips(void *_sensor, int low, int high)
spin_unlock_irqrestore(&priv->ul_lock, flags);
dev_dbg(dev, "[%u] %s: (%d:%d)->(%d:%d)\n",
TSENS_DBG_1(priv, "[%u] %s: (%d:%d)->(%d:%d)\n",
hw_id, __func__, d.low_thresh, d.up_thresh, cl_low, cl_high);
return 0;
@ -622,6 +624,8 @@ int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp)
/* Valid bit is set, OK to read the temperature */
*temp = tsens_hw_to_mC(s, temp_idx);
TSENS_DBG(priv, "Sensor_id: %d temp: %d", hw_id, *temp);
return 0;
}
@ -648,6 +652,8 @@ int get_temp_common(const struct tsens_sensor *s, int *temp)
*temp = code_to_degc(last_temp, s) * 1000;
TSENS_DBG(priv, "Sensor_id: %d temp: %d", hw_id, *temp);
return 0;
} while (time_before(jiffies, timeout));
@ -705,6 +711,7 @@ static void tsens_debug_init(struct platform_device *pdev)
{
struct tsens_priv *priv = platform_get_drvdata(pdev);
struct dentry *root, *file;
char tsens_name[32];
root = debugfs_lookup("tsens", NULL);
if (!root)
@ -720,6 +727,20 @@ static void tsens_debug_init(struct platform_device *pdev)
/* A directory for each instance of the TSENS IP */
priv->debug = debugfs_create_dir(dev_name(&pdev->dev), priv->debug_root);
debugfs_create_file("sensors", 0444, priv->debug, pdev, &dbg_sensors_fops);
/* Enable TSENS IPC logging context */
snprintf(tsens_name, sizeof(tsens_name), "%s_0", dev_name(&pdev->dev));
priv->ipc_log = ipc_log_context_create(IPC_LOGPAGES, tsens_name, 0);
if (!priv->ipc_log)
dev_err(&pdev->dev, "%s: unable to create IPC Logging for %s\n",
__func__, tsens_name);
snprintf(tsens_name, sizeof(tsens_name), "%s_1", dev_name(&pdev->dev));
priv->ipc_log1 = ipc_log_context_create(IPC_LOGPAGES, tsens_name, 0);
if (!priv->ipc_log1)
dev_err(&pdev->dev, "%s: unable to create IPC Logging for %s\n",
__func__, tsens_name);
}
#else
static inline void tsens_debug_init(struct platform_device *pdev) {}

25
drivers/thermal/qcom/tsens.h
View File

@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
* Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef __QCOM_TSENS_H__
@ -21,6 +22,7 @@
#include <linux/thermal.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/ipc_logging.h>
struct tsens_priv;
@ -145,6 +147,25 @@ struct tsens_ops {
[_name##_##14] = REG_FIELD(_offset, 30, 30), \
[_name##_##15] = REG_FIELD(_offset, 31, 31)
#define IPC_LOGPAGES 10
#define TSENS_DBG(dev, msg, args...) do { \
pr_debug("%s:" msg, __func__, args); \
if ((dev) && (dev)->ipc_log) { \
ipc_log_string((dev)->ipc_log, \
"%s: " msg " [%s]\n", \
__func__, args, current->comm); \
} \
} while (0)
#define TSENS_DBG_1(priv, msg, args...) do { \
dev_dbg((priv)->dev, "%s:" msg, __func__, args); \
if ((priv) && (priv)->ipc_log1) { \
ipc_log_string((priv)->ipc_log1, \
"%s: " msg " [%s]\n", \
__func__, args, current->comm); \
} \
} while (0)
/*
* reg_field IDs to use as an index into an array
* If you change the order of the entries, check the devm_regmap_field_alloc()
@ -551,6 +572,8 @@ struct tsens_context {
* @ops: pointer to list of callbacks supported by this device
* @debug_root: pointer to debugfs dentry for all tsens
* @debug: pointer to debugfs dentry for tsens controller
* @ipc_log: pointer for first ipc log context id
* @ipc_log1: pointer for second ipc log context id
* @sensor: list of sensors attached to this device
*/
struct tsens_priv {
@ -571,6 +594,8 @@ struct tsens_priv {
struct dentry *debug_root;
struct dentry *debug;
void *ipc_log;
void *ipc_log1;
struct tsens_sensor sensor[];
};