usb: ohci-da8xx: remove unused platform data

We no longer support any board files for DaVinci in mainline and so
struct da8xx_ohci_root_hub is no longer used. Remove it together with
all the code it's used for.

Signed-off-by: Bartosz Golaszewski <[e-mail]>
Acked-by: Alan Stern <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/host/ohci-da8xx.c

···
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
-#include <linux/platform_data/usb-davinci.h>
 #include <linux/regulator/consumer.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
···
 	return 0;
 }
 
-static int ohci_da8xx_has_potpgt(struct usb_hcd *hcd)
-{
-	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
-
-	if (hub && hub->potpgt)
-		return 1;
-
-	return 0;
-}
-
 static int ohci_da8xx_regulator_event(struct notifier_block *nb,
 				unsigned long event, void *data)
 {
···
 static int ohci_da8xx_reset(struct usb_hcd *hcd)
 {
 	struct device *dev		= hcd->self.controller;
-	struct da8xx_ohci_root_hub *hub	= dev_get_platdata(dev);
 	struct ohci_hcd	*ohci		= hcd_to_ohci(hcd);
 	int result;
 	u32 rh_a;
···
 	if (ohci_da8xx_has_oci(hcd)) {
 		rh_a &= ~RH_A_NOCP;
 		rh_a |=  RH_A_OCPM;
-	}
-	if (ohci_da8xx_has_potpgt(hcd)) {
-		rh_a &= ~RH_A_POTPGT;
-		rh_a |= hub->potpgt << 24;
 	}
 	ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
 

include/linux/platform_data/usb-davinci.h

···
-/*
- * USB related definitions
- *
- * Copyright (C) 2009 MontaVista Software, Inc. <[e-mail]>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#ifndef __ASM_ARCH_USB_H
-#define __ASM_ARCH_USB_H
-
-/* Passed as the platform data to the OHCI driver */
-struct	da8xx_ohci_root_hub {
-	/* Time from power on to power good (in 2 ms units) */
-	u8	potpgt;
-};
-
-void davinci_setup_usb(unsigned mA, unsigned potpgt_ms);
-
-#endif	/* ifndef __ASM_ARCH_USB_H */