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