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Commit 9ee43ead authored by Ashay Jaiswal's avatar Ashay Jaiswal Committed by Guru Das Srinagesh
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power: smb1390-psy: add support to expose chip version 



Add support to read chip version from rev-id peripheral and
expose it to userspace via power_supply property.

Change-Id: Ic522ec7dd7e6849f9f599cfba07e22c59878ce84
Signed-off-by: default avatarAshay Jaiswal <ashayj@codeaurora.org>
Signed-off-by: default avatarGuru Das Srinagesh <gurus@codeaurora.org>
parent 3b313491

drivers/power/supply/qcom/smb1390-charger-psy.c

+29 −2
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include <linux/device.h>

#include <linux/interrupt.h>

#include <linux/module.h>

#include <linux/qpnp/qpnp-revid.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/of_irq.h>
@@ -130,6 +131,7 @@ struct smb1390 { 
	struct notifier_block	nb;

	struct wakeup_source	*cp_ws;

	struct dentry		*dfs_root;

	struct pmic_revid_data	*pmic_rev_id;



	/* work structs */

	struct work_struct	status_change_work;
@@ -687,6 +689,7 @@ static enum power_supply_property smb1390_charge_pump_props[] = { 
	POWER_SUPPLY_PROP_CP_TOGGLE_SWITCHER,

	POWER_SUPPLY_PROP_CP_IRQ_STATUS,

	POWER_SUPPLY_PROP_CP_ILIM,

	POWER_SUPPLY_PROP_CHIP_VERSION,

};



static int smb1390_get_prop(struct power_supply *psy,
@@ -758,6 +761,9 @@ static int smb1390_get_prop(struct power_supply *psy, 
			val->intval = ((status & CFG_ILIM_MASK) * 100000)

					+ 500000;

		break;

	case POWER_SUPPLY_PROP_CHIP_VERSION:

		val->intval = chip->pmic_rev_id->rev4;

		break;

	default:

		smb1390_dbg(chip, PR_MISC, "charge pump power supply get prop %d not supported\n",

			prop);
@@ -1023,8 +1029,28 @@ static void smb1390_create_debugfs(struct smb1390 *chip) 
static int smb1390_probe(struct platform_device *pdev)

{

	struct smb1390 *chip;

	struct device_node *revid_dev_node;

	struct pmic_revid_data *pmic_rev_id;

	int rc;



	revid_dev_node = of_parse_phandle(pdev->dev.of_node,

					  "qcom,pmic-revid", 0);

	if (!revid_dev_node) {

		pr_err("Missing qcom,pmic-revid property\n");

		return -EINVAL;

	}



	pmic_rev_id = get_revid_data(revid_dev_node);

	of_node_put(revid_dev_node);

	if (IS_ERR_OR_NULL(pmic_rev_id)) {

		/*

		 * the revid peripheral must be registered, any failure

		 * here only indicates that the rev-id module has not

		 * probed yet.

		 */

		return -EPROBE_DEFER;

	}



	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);

	if (!chip)

		return -ENOMEM;
@@ -1033,6 +1059,7 @@ static int smb1390_probe(struct platform_device *pdev) 
	spin_lock_init(&chip->status_change_lock);

	mutex_init(&chip->die_chan_lock);

	chip->die_temp = -ENODATA;

	chip->pmic_rev_id = pmic_rev_id;

	platform_set_drvdata(pdev, chip);



	chip->regmap = dev_get_regmap(chip->dev->parent, NULL);
@@ -1087,8 +1114,8 @@ static int smb1390_probe(struct platform_device *pdev) 


	smb1390_create_debugfs(chip);



	pr_debug("smb1390 probed successfully\n");



	pr_debug("smb1390 probed successfully chip_version=%d\n",

			chip->pmic_rev_id->rev4);

	return 0;



out_notifier: