From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Thu, 11 Oct 2012 11:55:31 +0000 (+0200)
Subject: mfd: twl6040: Correct Ready and Thermal interrupt handling
X-Git-Tag: firefly_0821_release~3680^2~1426^2~93
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1ac96265a6f35080083e85b0f58182cdc9c07d0e;p=firefly-linux-kernel-4.4.55.git

mfd: twl6040: Correct Ready and Thermal interrupt handling

Create new irq handler for thermal events in order to be able to handle the
event and clean up the code regarding to interrupt handling:
Use proper function names for the irq handlers
No need to read the INTD register anymore.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---

diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c
index 6d9db275b0f1..5817bc6d09dc 100644
--- a/drivers/mfd/twl6040-core.c
+++ b/drivers/mfd/twl6040-core.c
@@ -193,27 +193,27 @@ static void twl6040_power_down_manual(struct twl6040 *twl6040)
 	twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl);
 }
 
-static irqreturn_t twl6040_naudint_handler(int irq, void *data)
+static irqreturn_t twl6040_readyint_handler(int irq, void *data)
 {
 	struct twl6040 *twl6040 = data;
-	u8 intid, status;
 
-	intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID);
+	complete(&twl6040->ready);
 
-	if (intid & TWL6040_READYINT)
-		complete(&twl6040->ready);
+	return IRQ_HANDLED;
+}
 
-	if (intid & TWL6040_THINT) {
-		status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
-		if (status & TWL6040_TSHUTDET) {
-			dev_warn(twl6040->dev,
-				 "Thermal shutdown, powering-off");
-			twl6040_power(twl6040, 0);
-		} else {
-			dev_warn(twl6040->dev,
-				 "Leaving thermal shutdown, powering-on");
-			twl6040_power(twl6040, 1);
-		}
+static irqreturn_t twl6040_thint_handler(int irq, void *data)
+{
+	struct twl6040 *twl6040 = data;
+	u8 status;
+
+	status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS);
+	if (status & TWL6040_TSHUTDET) {
+		dev_warn(twl6040->dev, "Thermal shutdown, powering-off");
+		twl6040_power(twl6040, 0);
+	} else {
+		dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on");
+		twl6040_power(twl6040, 1);
 	}
 
 	return IRQ_HANDLED;
@@ -580,12 +580,19 @@ static int __devinit twl6040_probe(struct i2c_client *client,
 		goto irq_init_err;
 
 	ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_READY,
-				   NULL, twl6040_naudint_handler, IRQF_ONESHOT,
+				   NULL, twl6040_readyint_handler, IRQF_ONESHOT,
 				   "twl6040_irq_ready", twl6040);
 	if (ret) {
-		dev_err(twl6040->dev, "READY IRQ request failed: %d\n",
-			ret);
-		goto irq_err;
+		dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret);
+		goto readyirq_err;
+	}
+
+	ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_TH,
+				   NULL, twl6040_thint_handler, IRQF_ONESHOT,
+				   "twl6040_irq_th", twl6040);
+	if (ret) {
+		dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret);
+		goto thirq_err;
 	}
 
 	/* dual-access registers controlled by I2C only */
@@ -650,8 +657,10 @@ static int __devinit twl6040_probe(struct i2c_client *client,
 	return 0;
 
 mfd_err:
+	free_irq(twl6040->irq_base + TWL6040_IRQ_TH, twl6040);
+thirq_err:
 	free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040);
-irq_err:
+readyirq_err:
 	twl6040_irq_exit(twl6040);
 irq_init_err:
 	if (gpio_is_valid(twl6040->audpwron))
@@ -677,6 +686,7 @@ static int __devexit twl6040_remove(struct i2c_client *client)
 		gpio_free(twl6040->audpwron);
 
 	free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040);
+	free_irq(twl6040->irq_base + TWL6040_IRQ_TH, twl6040);
 	twl6040_irq_exit(twl6040);
 
 	mfd_remove_devices(&client->dev);