Release 4.14 arch/mips/pmcs-msp71xx/msp_usb.c
/*
* 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;
}
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subsys_initcall(msp_usb_setup);
#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
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