NFC: st21nfcb: Remove gpio_irq field in static and dts configuration

- phy->gpio_irq is never done out of the request resources.
- irq_of_parse_and_map is already done in the i2c core so client->irq is
already set when entering in st21nfcb_hci_i2c_of_request_resources
- In case of static platform configuration client->irq can be set directly.
- It simplifies the code a bit.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/st21nfcb/i2c.c

@@ -50,7 +50,6 @@ struct st21nfcb_i2c_phy {
 	struct i2c_client *i2c_dev;
 	struct llt_ndlc *ndlc;
 
-	unsigned int gpio_irq;
 	unsigned int gpio_reset;
 	unsigned int irq_polarity;
 
@@ -262,15 +261,7 @@ static int st21nfcb_nci_i2c_of_request_resources(struct i2c_client *client)
 	}
 	phy->gpio_reset = gpio;
 
-	/* IRQ */
-	r = irq_of_parse_and_map(pp, 0);
-	if (r < 0) {
-		nfc_err(&client->dev, "Unable to get irq, error: %d\n", r);
-		return r;
-	}
-
-	phy->irq_polarity = irq_get_trigger_type(r);
-	client->irq = r;
+	phy->irq_polarity = irq_get_trigger_type(client->irq);
 
 	return 0;
 }
@@ -286,7 +277,6 @@ static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
 	struct st21nfcb_nfc_platform_data *pdata;
 	struct st21nfcb_i2c_phy *phy = i2c_get_clientdata(client);
 	int r;
-	int irq;
 
 	pdata = client->dev.platform_data;
 	if (pdata == NULL) {
@@ -295,17 +285,9 @@ static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
 	}
 
 	/* store for later use */
-	phy->gpio_irq = pdata->gpio_irq;
 	phy->gpio_reset = pdata->gpio_reset;
 	phy->irq_polarity = pdata->irq_polarity;
 
-	r = devm_gpio_request_one(&client->dev, phy->gpio_irq,
-				GPIOF_IN, "clf_irq");
-	if (r) {
-		pr_err("%s : gpio_request failed\n", __FILE__);
-		return -ENODEV;
-	}
-
 	r = devm_gpio_request_one(&client->dev,
 			phy->gpio_reset, GPIOF_OUT_INIT_HIGH, "clf_reset");
 	if (r) {
@@ -313,16 +295,6 @@ static int st21nfcb_nci_i2c_request_resources(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	/* IRQ */
-	irq = gpio_to_irq(phy->gpio_irq);
-	if (irq < 0) {
-		nfc_err(&client->dev,
-			"Unable to get irq number for GPIO %d error %d\n",
-			phy->gpio_irq, r);
-		return -ENODEV;
-	}
-	client->irq = irq;
-
 	return 0;
 }
 

include/linux/platform_data/st21nfcb.h

@@ -24,7 +24,6 @@
 #define ST21NFCB_NCI_DRIVER_NAME "st21nfcb_nci"
 
 struct st21nfcb_nfc_platform_data {
-	unsigned int gpio_irq;
 	unsigned int gpio_reset;
 	unsigned int irq_polarity;
 };