usb: renesas_usbhs: Add a common function for the .get_id

All platform related codes (rcar[23].c and rza{2}.c) has its own
.get_id function as "USBHS_GADGET". So, we can use a common
function for it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/renesas_usbhs/common.c

@@ -84,6 +84,11 @@ struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
 	return dev_get_drvdata(&pdev->dev);
 }
 
+int usbhs_get_id_as_gadget(struct platform_device *pdev)
+{
+	return USBHS_GADGET;
+}
+
 /*
  *		syscfg functions
  */

drivers/usb/renesas_usbhs/common.h

@@ -297,6 +297,8 @@ void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data);
 #define usbhs_lock(p, f) spin_lock_irqsave(usbhs_priv_to_lock(p), f)
 #define usbhs_unlock(p, f) spin_unlock_irqrestore(usbhs_priv_to_lock(p), f)
 
+int usbhs_get_id_as_gadget(struct platform_device *pdev);
+
 /*
  * sysconfig
  */

drivers/usb/renesas_usbhs/rcar2.c

@@ -3,6 +3,7 @@
  * Renesas USB driver R-Car Gen. 2 initialization and power control
  *
  * Copyright (C) 2014 Ulrich Hecht
+ * Copyright (C) 2019 Renesas Electronics Corporation
  */
 
 #include <linux/gpio.h>
@@ -62,14 +63,9 @@ static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
 	return retval;
 }
 
-static int usbhs_rcar2_get_id(struct platform_device *pdev)
-{
-	return USBHS_GADGET;
-}
-
 const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
 	.hardware_init = usbhs_rcar2_hardware_init,
 	.hardware_exit = usbhs_rcar2_hardware_exit,
 	.power_ctrl = usbhs_rcar2_power_ctrl,
-	.get_id = usbhs_rcar2_get_id,
+	.get_id = usbhs_get_id_as_gadget,
 };

drivers/usb/renesas_usbhs/rcar3.c

@@ -2,7 +2,7 @@
 /*
  * Renesas USB driver R-Car Gen. 3 initialization and power control
  *
- * Copyright (C) 2016 Renesas Electronics Corporation
+ * Copyright (C) 2016-2019 Renesas Electronics Corporation
  */
 
 #include <linux/delay.h>
@@ -95,17 +95,12 @@ static int usbhs_rcar3_power_and_pll_ctrl(struct platform_device *pdev,
 	return 0;
 }
 
-static int usbhs_rcar3_get_id(struct platform_device *pdev)
-{
-	return USBHS_GADGET;
-}
-
 const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = {
 	.power_ctrl = usbhs_rcar3_power_ctrl,
-	.get_id = usbhs_rcar3_get_id,
+	.get_id = usbhs_get_id_as_gadget,
 };
 
 const struct renesas_usbhs_platform_callback usbhs_rcar3_with_pll_ops = {
 	.power_ctrl = usbhs_rcar3_power_and_pll_ctrl,
-	.get_id = usbhs_rcar3_get_id,
+	.get_id = usbhs_get_id_as_gadget,
 };

drivers/usb/renesas_usbhs/rza.c

@@ -3,7 +3,7 @@
  * Renesas USB driver RZ/A initialization and power control
  *
  * Copyright (C) 2018 Chris Brandt
- * Copyright (C) 2018 Renesas Electronics Corporation
+ * Copyright (C) 2018-2019 Renesas Electronics Corporation
  */
 
 #include <linux/delay.h>
@@ -41,12 +41,7 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev)
 	return 0;
 }
 
-static int usbhs_rza_get_id(struct platform_device *pdev)
-{
-	return USBHS_GADGET;
-}
-
 const struct renesas_usbhs_platform_callback usbhs_rza1_ops = {
 	.hardware_init = usbhs_rza1_hardware_init,
-	.get_id = usbhs_rza_get_id,
+	.get_id = usbhs_get_id_as_gadget,
 };

drivers/usb/renesas_usbhs/rza2.c

@@ -59,14 +59,9 @@ static int usbhs_rza2_power_ctrl(struct platform_device *pdev,
 	return retval;
 }
 
-static int usbhs_rza2_get_id(struct platform_device *pdev)
-{
-	return USBHS_GADGET;
-}
-
 const struct renesas_usbhs_platform_callback usbhs_rza2_ops = {
 	.hardware_init = usbhs_rza2_hardware_init,
 	.hardware_exit = usbhs_rza2_hardware_exit,
 	.power_ctrl = usbhs_rza2_power_ctrl,
-	.get_id = usbhs_rza2_get_id,
+	.get_id = usbhs_get_id_as_gadget,
 };