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[PATCH 3/3] MIPS: Add platform device and Kconfig for Octeon USB EHCI/OH

To: ralf@linux-mips.org, linux-mips@linux-mips.org, linux-usb@vger.kernel.org, gregkh@suse.de, dbrownell@users.sourceforge.net
Subject: [PATCH 3/3] MIPS: Add platform device and Kconfig for Octeon USB EHCI/OHCI
From: David Daney <ddaney@caviumnetworks.com>
Date: Fri, 8 Oct 2010 14:47:53 -0700
Cc: David Daney <ddaney@caviumnetworks.com>
In-reply-to: <1286574473-23098-1-git-send-email-ddaney@caviumnetworks.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1286574473-23098-1-git-send-email-ddaney@caviumnetworks.com>
Sender: linux-mips-bounce@linux-mips.org
Declare that OCTEON reference boards have both OHCI and EHCI.

Add platform devices for the corresponding hardware.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
---
 arch/mips/Kconfig                         |    2 +
 arch/mips/cavium-octeon/octeon-platform.c |  105 ++++++++++++++++++++++++++++-
 2 files changed, 106 insertions(+), 1 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e68b89f..fbaf08e 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -696,6 +696,8 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
        select HW_HAS_PCI
        select ARCH_SUPPORTS_MSI
        select ZONE_DMA32
+       select USB_ARCH_HAS_OHCI
+       select USB_ARCH_HAS_EHCI
        help
          This option supports all of the Octeon reference boards from Cavium
          Networks. It builds a kernel that dynamically determines the Octeon
diff --git a/arch/mips/cavium-octeon/octeon-platform.c 
b/arch/mips/cavium-octeon/octeon-platform.c
index 49c3320..cecaf62 100644
--- a/arch/mips/cavium-octeon/octeon-platform.c
+++ b/arch/mips/cavium-octeon/octeon-platform.c
@@ -3,13 +3,14 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 2004-2009 Cavium Networks
+ * Copyright (C) 2004-2010 Cavium Networks
  * Copyright (C) 2008 Wind River Systems
  */
 
 #include <linux/init.h>
 #include <linux/irq.h>
 #include <linux/i2c.h>
+#include <linux/usb.h>
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -337,6 +338,108 @@ out:
 }
 device_initcall(octeon_mgmt_device_init);
 
+#ifdef CONFIG_USB
+
+static int __init octeon_ehci_device_init(void)
+{
+       struct platform_device *pd;
+       int ret = 0;
+
+       struct resource usb_resources[] = {
+               {
+                       .flags  = IORESOURCE_MEM,
+               }, {
+                       .flags  = IORESOURCE_IRQ,
+               }
+       };
+
+       /* Only Octeon2 has ehci/ohci */
+       if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
+               return 0;
+
+       if (octeon_is_simulation() || usb_disabled())
+               return 0; /* No USB in the simulator. */
+
+       pd = platform_device_alloc("octeon-ehci", 0);
+       if (!pd) {
+               ret = -ENOMEM;
+               goto out;
+       }
+
+       usb_resources[0].start = 0x00016F0000000000ULL;
+       usb_resources[0].end = usb_resources[0].start + 0x100;
+
+       usb_resources[1].start = OCTEON_IRQ_USB0;
+       usb_resources[1].end = OCTEON_IRQ_USB0;
+
+       ret = platform_device_add_resources(pd, usb_resources,
+                                           ARRAY_SIZE(usb_resources));
+       if (ret)
+               goto fail;
+
+       ret = platform_device_add(pd);
+       if (ret)
+               goto fail;
+
+       return ret;
+fail:
+       platform_device_put(pd);
+out:
+       return ret;
+}
+device_initcall(octeon_ehci_device_init);
+
+static int __init octeon_ohci_device_init(void)
+{
+       struct platform_device *pd;
+       int ret = 0;
+
+       struct resource usb_resources[] = {
+               {
+                       .flags  = IORESOURCE_MEM,
+               }, {
+                       .flags  = IORESOURCE_IRQ,
+               }
+       };
+
+       /* Only Octeon2 has ehci/ohci */
+       if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
+               return 0;
+
+       if (octeon_is_simulation() || usb_disabled())
+               return 0; /* No USB in the simulator. */
+
+       pd = platform_device_alloc("octeon-ohci", 0);
+       if (!pd) {
+               ret = -ENOMEM;
+               goto out;
+       }
+
+       usb_resources[0].start = 0x00016F0000000400ULL;
+       usb_resources[0].end = usb_resources[0].start + 0x100;
+
+       usb_resources[1].start = OCTEON_IRQ_USB0;
+       usb_resources[1].end = OCTEON_IRQ_USB0;
+
+       ret = platform_device_add_resources(pd, usb_resources,
+                                           ARRAY_SIZE(usb_resources));
+       if (ret)
+               goto fail;
+
+       ret = platform_device_add(pd);
+       if (ret)
+               goto fail;
+
+       return ret;
+fail:
+       platform_device_put(pd);
+out:
+       return ret;
+}
+device_initcall(octeon_ohci_device_init);
+
+#endif /* CONFIG_USB */
+
 MODULE_AUTHOR("David Daney <ddaney@caviumnetworks.com>");
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Platform driver for Octeon SOC");
-- 
1.7.2.3


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