USB: ohci: add support for tmio-ohci cell

Some Toshiba Mobile I/O chips have OHCI controller built in.
E.g. the tc6393xb chip found in several Toshiba e-Series PDAs
and in Sharp Zaurus SL-6000 PDA. This adds platform glue
to support OHCI function of the chip.

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: Ian Molton <spyro@f2s.com>
Cc: Ian Molton <spyro@f2s.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/Kconfig

@@ -36,7 +36,8 @@ config USB_ARCH_HAS_OHCI
 	default y if PXA3xx
 	default y if ARCH_EP93XX
 	default y if ARCH_AT91
-	default y if ARCH_PNX4008
+	default y if ARCH_PNX4008 && I2C
+	default y if MFD_TC6393XB
 	# PPC:
 	default y if STB03xxx
 	default y if PPC_MPC52xx

drivers/usb/host/Kconfig

@@ -138,7 +138,6 @@ config USB_OHCI_HCD
 	tristate "OHCI HCD support"
 	depends on USB && USB_ARCH_HAS_OHCI
 	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
-	select I2C if ARCH_PNX4008
 	---help---
 	  The Open Host Controller Interface (OHCI) is a standard for accessing
 	  USB 1.1 host controller hardware.  It does more in hardware than Intel's

drivers/usb/host/ohci-hcd.c

@@ -1075,12 +1075,18 @@ MODULE_LICENSE ("GPL");
 #define SM501_OHCI_DRIVER	ohci_hcd_sm501_driver
 #endif
 
+#ifdef CONFIG_MFD_TC6393XB
+#include "ohci-tmio.c"
+#define TMIO_OHCI_DRIVER	ohci_hcd_tmio_driver
+#endif
+
 #if	!defined(PCI_DRIVER) &&		\
 	!defined(PLATFORM_DRIVER) &&	\
 	!defined(OF_PLATFORM_DRIVER) &&	\
 	!defined(SA1111_DRIVER) &&	\
 	!defined(PS3_SYSTEM_BUS_DRIVER) && \
 	!defined(SM501_OHCI_DRIVER) && \
+	!defined(TMIO_OHCI_DRIVER) && \
 	!defined(SSB_OHCI_DRIVER)
 #error "missing bus glue for ohci-hcd"
 #endif
@@ -1147,13 +1153,25 @@ static int __init ohci_hcd_mod_init(void)
 		goto error_sm501;
 #endif
 
+#ifdef TMIO_OHCI_DRIVER
+	retval = platform_driver_register(&TMIO_OHCI_DRIVER);
+	if (retval < 0)
+		goto error_tmio;
+#endif
+
 	return retval;
 
 	/* Error path */
+#ifdef TMIO_OHCI_DRIVER
+	platform_driver_unregister(&TMIO_OHCI_DRIVER);
+ error_tmio:
+#endif
 #ifdef SM501_OHCI_DRIVER
+	platform_driver_unregister(&SM501_OHCI_DRIVER);
  error_sm501:
 #endif
 #ifdef SSB_OHCI_DRIVER
+	ssb_driver_unregister(&SSB_OHCI_DRIVER);
  error_ssb:
 #endif
 #ifdef PCI_DRIVER
@@ -1189,6 +1207,9 @@ module_init(ohci_hcd_mod_init);
 
 static void __exit ohci_hcd_mod_exit(void)
 {
+#ifdef TMIO_OHCI_DRIVER
+	platform_driver_unregister(&TMIO_OHCI_DRIVER);
+#endif
 #ifdef SM501_OHCI_DRIVER
 	platform_driver_unregister(&SM501_OHCI_DRIVER);
 #endif