USB: ohci: Add Kconfig entries for ohci-omap3

On OMAP systems, we have two different OHCI controllers. The legacy
one is present in OMAP1/2 chips, and the newer one comes bundled as
a companion to the EHCI controller on OMAP3 and newer chips.

We may have multi-omap configurations where OMAP2 and OMAP3
support may be enabled in the same kernel, and need a mechanism
to keep both drivers around.

This patch adds a Kconfig entry for each of these drivers.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 44 insertions, 2 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 8d3df0397de3..f865be2276d4 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -207,6 +207,21 @@ config USB_OHCI_HCD
           To compile this driver as a module, choose M here: the
           module will be called ohci-hcd.
 
+config USB_OHCI_HCD_OMAP1
+        bool "OHCI support for OMAP1/2 chips"
+        depends on USB_OHCI_HCD && (ARCH_OMAP1 || ARCH_OMAP2)
+        default y
+        ---help---
+          Enables support for the OHCI controller on OMAP1/2 chips.
+
+config USB_OHCI_HCD_OMAP3
+        bool "OHCI support for OMAP3 and later chips"
+        depends on USB_OHCI_HCD && (ARCH_OMAP3 || ARCH_OMAP4)
+        default y
+        ---help---
+          Enables support for the on-chip OHCI controller on
+          OMAP3 and later chips.
+
 config USB_OHCI_HCD_PPC_SOC
         bool "OHCI support for on-chip PPC USB controller"
         depends on USB_OHCI_HCD && (STB03xxx || PPC_MPC52xx)
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index d15d2478493e..fc576557d8a5 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1006,9 +1006,14 @@ MODULE_LICENSE ("GPL");
 #define PLATFORM_DRIVER         ohci_hcd_s3c2410_driver
 #endif
 
-#ifdef CONFIG_ARCH_OMAP
+#ifdef CONFIG_USB_OHCI_HCD_OMAP1
 #include "ohci-omap.c"
-#define PLATFORM_DRIVER         ohci_hcd_omap_driver
+#define OMAP1_PLATFORM_DRIVER   ohci_hcd_omap_driver
+#endif
+
+#ifdef CONFIG_USB_OHCI_HCD_OMAP3
+#include "ohci-omap3.c"
+#define OMAP3_PLATFORM_DRIVER   ohci_hcd_omap3_driver
 #endif
 
 #ifdef CONFIG_ARCH_LH7A404
@@ -1092,6 +1097,8 @@ MODULE_LICENSE ("GPL");
 
 #if     !defined(PCI_DRIVER) &&         \
         !defined(PLATFORM_DRIVER) &&    \
+        !defined(OMAP1_PLATFORM_DRIVER) &&      \
+        !defined(OMAP3_PLATFORM_DRIVER) &&      \
         !defined(OF_PLATFORM_DRIVER) && \
         !defined(SA1111_DRIVER) &&      \
         !defined(PS3_SYSTEM_BUS_DRIVER) && \
@@ -1133,6 +1140,18 @@ static int __init ohci_hcd_mod_init(void)
                 goto error_platform;
 #endif
 
+#ifdef OMAP1_PLATFORM_DRIVER
+        retval = platform_driver_register(&OMAP1_PLATFORM_DRIVER);
+        if (retval < 0)
+                goto error_omap1_platform;
+#endif
+
+#ifdef OMAP3_PLATFORM_DRIVER
+        retval = platform_driver_register(&OMAP3_PLATFORM_DRIVER);
+        if (retval < 0)
+                goto error_omap3_platform;
+#endif
+
 #ifdef OF_PLATFORM_DRIVER
         retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
         if (retval < 0)
@@ -1200,6 +1219,14 @@ static int __init ohci_hcd_mod_init(void)
         platform_driver_unregister(&PLATFORM_DRIVER);
  error_platform:
 #endif
+#ifdef OMAP1_PLATFORM_DRIVER
+        platform_driver_unregister(&OMAP1_PLATFORM_DRIVER);
+ error_omap1_platform:
+#endif
+#ifdef OMAP3_PLATFORM_DRIVER
+        platform_driver_unregister(&OMAP3_PLATFORM_DRIVER);
+ error_omap3_platform:
+#endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
         ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
  error_ps3: