Initial import

1 files changed, 173 insertions, 0 deletions

diff --git a/arch/mips/pmcs-msp71xx/msp_usb.c b/arch/mips/pmcs-msp71xx/msp_usb.c
new file mode 100644
index 000000000..c87c5f810
--- /dev/null
+++ b/arch/mips/pmcs-msp71xx/msp_usb.c
@@ -0,0 +1,173 @@
+/*
+ * The setup file for USB related hardware on PMC-Sierra MSP processors.
+ *
+ * Copyright 2006 PMC-Sierra, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
+ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
+ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
+
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+
+#include <asm/mipsregs.h>
+
+#include <msp_regs.h>
+#include <msp_int.h>
+#include <msp_prom.h>
+#include <msp_usb.h>
+
+
+#if defined(CONFIG_USB_EHCI_HCD)
+static struct resource msp_usbhost0_resources[] = {
+	[0] = { /* EHCI-HS operational and capabilities registers */
+		.start	= MSP_USB0_HS_START,
+		.end	= MSP_USB0_HS_END,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= MSP_INT_USB,
+		.end	= MSP_INT_USB,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = { /* MSBus-to-AMBA bridge register space */
+		.start	= MSP_USB0_MAB_START,
+		.end	= MSP_USB0_MAB_END,
+		.flags	= IORESOURCE_MEM,
+	},
+	[3] = { /* Identification and general hardware parameters */
+		.start	= MSP_USB0_ID_START,
+		.end	= MSP_USB0_ID_END,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static u64 msp_usbhost0_dma_mask = 0xffffffffUL;
+
+static struct mspusb_device msp_usbhost0_device = {
+	.dev	= {
+		.name	= "pmcmsp-ehci",
+		.id	= 0,
+		.dev	= {
+			.dma_mask = &msp_usbhost0_dma_mask,
+			.coherent_dma_mask = 0xffffffffUL,
+		},
+		.num_resources	= ARRAY_SIZE(msp_usbhost0_resources),
+		.resource	= msp_usbhost0_resources,
+	},
+};
+#endif /* CONFIG_USB_EHCI_HCD */
+
+#if defined(CONFIG_USB_GADGET)
+static struct resource msp_usbdev0_resources[] = {
+	[0] = { /* EHCI-HS operational and capabilities registers */
+		.start	= MSP_USB0_HS_START,
+		.end	= MSP_USB0_HS_END,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= MSP_INT_USB,
+		.end	= MSP_INT_USB,
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = { /* MSBus-to-AMBA bridge register space */
+		.start	= MSP_USB0_MAB_START,
+		.end	= MSP_USB0_MAB_END,
+		.flags	= IORESOURCE_MEM,
+	},
+	[3] = { /* Identification and general hardware parameters */
+		.start	= MSP_USB0_ID_START,
+		.end	= MSP_USB0_ID_END,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+static u64 msp_usbdev_dma_mask = 0xffffffffUL;
+
+/* This may need to be converted to a mspusb_device, too. */
+static struct mspusb_device msp_usbdev0_device = {
+	.dev	= {
+		.name	= "msp71xx_udc",
+		.id	= 0,
+		.dev	= {
+			.dma_mask = &msp_usbdev_dma_mask,
+			.coherent_dma_mask = 0xffffffffUL,
+		},
+		.num_resources	= ARRAY_SIZE(msp_usbdev0_resources),
+		.resource	= msp_usbdev0_resources,
+	},
+};
+#endif /* CONFIG_USB_GADGET */
+
+static int __init msp_usb_setup(void)
+{
+	char		*strp;
+	char		envstr[32];
+	struct platform_device *msp_devs[NUM_USB_DEVS];
+	unsigned int val;
+
+	/* construct environment name usbmode */
+	/* set usbmode <host/device> as pmon environment var */
+	/*
+	 * Could this perhaps be integrated into the "features" env var?
+	 * Use the features key "U", and follow with "H" for host-mode,
+	 * "D" for device-mode.	 If it works for Ethernet, why not USB...
+	 *  -- hammtrev, 2007/03/22
+	 */
+	snprintf((char *)&envstr[0], sizeof(envstr), "usbmode");
+
+	/* set default host mode */
+	val = 1;
+
+	/* get environment string */
+	strp = prom_getenv((char *)&envstr[0]);
+	if (strp) {
+		/* compare string */
+		if (!strcmp(strp, "device"))
+			val = 0;
+	}
+
+	if (val) {
+#if defined(CONFIG_USB_EHCI_HCD)
+		msp_devs[0] = &msp_usbhost0_device.dev;
+		ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name);
+#else
+		ppfinit("%s: echi_hcd not supported\n", __FILE__);
+#endif	/* CONFIG_USB_EHCI_HCD */
+	} else {
+#if defined(CONFIG_USB_GADGET)
+		/* get device mode structure */
+		msp_devs[0] = &msp_usbdev0_device.dev;
+		ppfinit("platform add USB DEVICE done %s.\n"
+					, msp_devs[0]->name);
+#else
+		ppfinit("%s: usb_gadget not supported\n", __FILE__);
+#endif	/* CONFIG_USB_GADGET */
+	}
+	/* add device */
+	platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
+
+	return 0;
+}
+
+subsys_initcall(msp_usb_setup);
+#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */