diff options
Diffstat (limited to 'arch/mips/pmcs-msp71xx/msp_usb.c')
| -rw-r--r-- | arch/mips/pmcs-msp71xx/msp_usb.c | 173 |
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 */ |