linux-kernel - [PATCH 6/9] power: supply: max77705

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Message-Id: <20250830-max77705_77976_charger_improvement-v1-6-e976db3fd432@gmail.com>
Date: Sat, 30 Aug 2025 23:45:19 +0300
From: Dzmitry Sankouski <dsankouski@...il.com>
To: Chanwoo Choi <cw00.choi@...sung.com>, 
 Krzysztof Kozlowski <krzk@...nel.org>, Lee Jones <lee@...nel.org>, 
 Sebastian Reichel <sre@...nel.org>, 
 Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Sebastian Reichel <sebastian.reichel@...labora.com>, 
 linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org, 
 Dzmitry Sankouski <dsankouski@...il.com>
Subject: [PATCH 6/9] power: supply: max77705_charger: rework interrupts

Current implementation uses handle_post_irq to actually handle chgin
irq. This is not how things are meant to work in regmap-irq.

Remove handle_post_irq, and request a threaded interrupt for chgin.

Fixes: a6a494c8e3ce ("power: supply: max77705: Add charger driver for Maxim 77705")

Signed-off-by: Dzmitry Sankouski <dsankouski@...il.com>
---
 drivers/power/supply/max77705_charger.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/power/supply/max77705_charger.c b/drivers/power/supply/max77705_charger.c
index de2184327ff8..a1b04ec8921e 100644
--- a/drivers/power/supply/max77705_charger.c
+++ b/drivers/power/supply/max77705_charger.c
@@ -40,13 +40,13 @@ static enum power_supply_property max77705_charger_props[] = {
 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 };
 
-static int max77705_chgin_irq(void *irq_drv_data)
+static irqreturn_t max77705_chgin_irq(int irq, void *irq_drv_data)
 {
 	struct max77705_charger_data *chg = irq_drv_data;
 
 	queue_work(chg->wqueue, &chg->chgin_work);
 
-	return 0;
+	return IRQ_HANDLED;
 }
 
 static const struct regmap_irq max77705_charger_irqs[] = {
@@ -64,7 +64,6 @@ static struct regmap_irq_chip max77705_charger_irq_chip = {
 	.name			= "max77705-charger",
 	.status_base		= MAX77705_CHG_REG_INT,
 	.mask_base		= MAX77705_CHG_REG_INT_MASK,
-	.handle_post_irq	= max77705_chgin_irq,
 	.num_regs		= 1,
 	.irqs			= max77705_charger_irqs,
 	.num_irqs		= ARRAY_SIZE(max77705_charger_irqs),
@@ -593,12 +592,6 @@ static int max77705_charger_probe(struct i2c_client *i2c)
 					     "cannot allocate regmap field\n");
 	}
 
-	ret = regmap_update_bits(chg->regmap,
-				MAX77705_CHG_REG_INT_MASK,
-				MAX77705_CHGIN_IM, 0);
-	if (ret)
-		return ret;
-
 	pscfg.fwnode = dev_fwnode(dev);
 	pscfg.drv_data = chg;
 
@@ -614,6 +607,15 @@ static int max77705_charger_probe(struct i2c_client *i2c)
 	if (ret)
 		return dev_err_probe(dev, ret, "failed to add irq chip\n");
 
+	ret = devm_request_threaded_irq(dev, regmap_irq_get_virq(irq_data, MAX77705_CHGIN_I),
+				 NULL, max77705_chgin_irq,
+				 IRQF_TRIGGER_HIGH,
+	"chgin-irq", chg);
+	if (ret) {
+		pr_err("%s: Failed to Request IRQ (%d)\n", __func__, ret);
+		return ret;
+	}
+
 	chg->wqueue = create_singlethread_workqueue(dev_name(dev));
 	if (!chg->wqueue)
 		return dev_err_probe(dev, -ENOMEM, "failed to create workqueue\n");

-- 
2.39.5