drivers: thermal: tsens: Add debugfs support (7c938f48) · Commits · 戴 / test

drivers/thermal/qcom/tsens-common.c

+83 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,7 @@
		* Copyright (c) 2015, The Linux Foundation. All rights reserved.
		*/

		#include <linux/debugfs.h>
		#include <linux/err.h>
		#include <linux/io.h>
		#include <linux/nvmem-consumer.h>
		@@ -139,6 +140,77 @@ int get_temp_common(struct tsens_sensor s, int temp)
		return 0;
		}

		#ifdef CONFIG_DEBUG_FS
		static int dbg_sensors_show(struct seq_file s, void data)
		{
		struct platform_device *pdev = s->private;
		struct tsens_priv *priv = platform_get_drvdata(pdev);
		int i;

		seq_printf(s, "max: %2d\nnum: %2d\n\n",
		priv->feat->max_sensors, priv->num_sensors);

		seq_puts(s, " id slope offset\n--------------------------\n");
		for (i = 0; i < priv->num_sensors; i++) {
		seq_printf(s, "%8d %8d %8d\n", priv->sensor[i].hw_id,
		priv->sensor[i].slope, priv->sensor[i].offset);
		}

		return 0;
		}

		static int dbg_version_show(struct seq_file s, void data)
		{
		struct platform_device *pdev = s->private;
		struct tsens_priv *priv = platform_get_drvdata(pdev);
		u32 maj_ver, min_ver, step_ver;
		int ret;

		if (tsens_ver(priv) > VER_0_1) {
		ret = regmap_field_read(priv->rf[VER_MAJOR], &maj_ver);
		if (ret)
		return ret;
		ret = regmap_field_read(priv->rf[VER_MINOR], &min_ver);
		if (ret)
		return ret;
		ret = regmap_field_read(priv->rf[VER_STEP], &step_ver);
		if (ret)
		return ret;
		seq_printf(s, "%d.%d.%d\n", maj_ver, min_ver, step_ver);
		} else {
		seq_puts(s, "0.1.0\n");
		}

		return 0;
		}

		DEFINE_SHOW_ATTRIBUTE(dbg_version);
		DEFINE_SHOW_ATTRIBUTE(dbg_sensors);

		static void tsens_debug_init(struct platform_device *pdev)
		{
		struct tsens_priv *priv = platform_get_drvdata(pdev);
		struct dentry root, file;

		root = debugfs_lookup("tsens", NULL);
		if (!root)
		priv->debug_root = debugfs_create_dir("tsens", NULL);
		else
		priv->debug_root = root;

		file = debugfs_lookup("version", priv->debug_root);
		if (!file)
		debugfs_create_file("version", 0444, priv->debug_root,
		pdev, &dbg_version_fops);

		/* 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);
		}
		#else
		static inline void tsens_debug_init(struct platform_device *pdev) {}
		#endif

		static const struct regmap_config tsens_config = {
		.name = "tm",
		.reg_bits = 32,
		@@ -199,6 +271,15 @@ int __init init_common(struct tsens_priv *priv)
		goto err_put_device;
		}

		if (tsens_ver(priv) > VER_0_1) {
		for (i = VER_MAJOR; i <= VER_STEP; i++) {
		priv->rf[i] = devm_regmap_field_alloc(dev, priv->srot_map,
		priv->fields[i]);
		if (IS_ERR(priv->rf[i]))
		return PTR_ERR(priv->rf[i]);
		}
		}

		priv->rf[TSENS_EN] = devm_regmap_field_alloc(dev, priv->srot_map,
		priv->fields[TSENS_EN]);
		if (IS_ERR(priv->rf[TSENS_EN])) {
		@@ -238,6 +319,8 @@ int __init init_common(struct tsens_priv *priv)
		}
		}

		tsens_debug_init(op);

		return 0;

		err_put_device:

drivers/thermal/qcom/tsens.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,7 @@
		* Copyright (c) 2015, The Linux Foundation. All rights reserved.
		*/

		#include <linux/debugfs.h>
		#include <linux/err.h>
		#include <linux/module.h>
		#include <linux/of.h>
		@@ -176,6 +177,7 @@ static int tsens_remove(struct platform_device *pdev)
		{
		struct tsens_priv *priv = platform_get_drvdata(pdev);

		debugfs_remove_recursive(priv->debug_root);
		if (priv->ops->disable)
		priv->ops->disable(priv);

drivers/thermal/qcom/tsens.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -293,6 +293,8 @@ struct tsens_context {
		* @feat: features of the IP
		* @fields: bitfield locations
		* @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
		* @sensor: list of sensors attached to this device
		*/
		struct tsens_priv {
		@@ -306,6 +308,10 @@ struct tsens_priv {
		const struct tsens_features *feat;
		const struct reg_field *fields;
		const struct tsens_ops *ops;

		struct dentry *debug_root;
		struct dentry *debug;

		struct tsens_sensor sensor[0];
		};

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