1/* 2 * The setup file for USB related hardware on PMC-Sierra MSP processors. 3 * 4 * Copyright 2006 PMC-Sierra, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; either version 2 of the License, or (at your 9 * option) any later version. 10 * 11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 12 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 14 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 15 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 16 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 17 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 18 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 19 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 20 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 21 * 22 * You should have received a copy of the GNU General Public License along 23 * with this program; if not, write to the Free Software Foundation, Inc., 24 * 675 Mass Ave, Cambridge, MA 02139, USA. 25 */ 26#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET) 27 28#include <linux/init.h> 29#include <linux/ioport.h> 30#include <linux/platform_device.h> 31 32#include <asm/mipsregs.h> 33 34#include <msp_regs.h> 35#include <msp_int.h> 36#include <msp_prom.h> 37#include <msp_usb.h> 38 39 40#if defined(CONFIG_USB_EHCI_HCD) 41static struct resource msp_usbhost0_resources[] = { 42 [0] = { /* EHCI-HS operational and capabilities registers */ 43 .start = MSP_USB0_HS_START, 44 .end = MSP_USB0_HS_END, 45 .flags = IORESOURCE_MEM, 46 }, 47 [1] = { 48 .start = MSP_INT_USB, 49 .end = MSP_INT_USB, 50 .flags = IORESOURCE_IRQ, 51 }, 52 [2] = { /* MSBus-to-AMBA bridge register space */ 53 .start = MSP_USB0_MAB_START, 54 .end = MSP_USB0_MAB_END, 55 .flags = IORESOURCE_MEM, 56 }, 57 [3] = { /* Identification and general hardware parameters */ 58 .start = MSP_USB0_ID_START, 59 .end = MSP_USB0_ID_END, 60 .flags = IORESOURCE_MEM, 61 }, 62}; 63 64static u64 msp_usbhost0_dma_mask = 0xffffffffUL; 65 66static struct mspusb_device msp_usbhost0_device = { 67 .dev = { 68 .name = "pmcmsp-ehci", 69 .id = 0, 70 .dev = { 71 .dma_mask = &msp_usbhost0_dma_mask, 72 .coherent_dma_mask = 0xffffffffUL, 73 }, 74 .num_resources = ARRAY_SIZE(msp_usbhost0_resources), 75 .resource = msp_usbhost0_resources, 76 }, 77}; 78#endif /* CONFIG_USB_EHCI_HCD */ 79 80#if defined(CONFIG_USB_GADGET) 81static struct resource msp_usbdev0_resources[] = { 82 [0] = { /* EHCI-HS operational and capabilities registers */ 83 .start = MSP_USB0_HS_START, 84 .end = MSP_USB0_HS_END, 85 .flags = IORESOURCE_MEM, 86 }, 87 [1] = { 88 .start = MSP_INT_USB, 89 .end = MSP_INT_USB, 90 .flags = IORESOURCE_IRQ, 91 }, 92 [2] = { /* MSBus-to-AMBA bridge register space */ 93 .start = MSP_USB0_MAB_START, 94 .end = MSP_USB0_MAB_END, 95 .flags = IORESOURCE_MEM, 96 }, 97 [3] = { /* Identification and general hardware parameters */ 98 .start = MSP_USB0_ID_START, 99 .end = MSP_USB0_ID_END, 100 .flags = IORESOURCE_MEM, 101 }, 102}; 103 104static u64 msp_usbdev_dma_mask = 0xffffffffUL; 105 106/* This may need to be converted to a mspusb_device, too. */ 107static struct mspusb_device msp_usbdev0_device = { 108 .dev = { 109 .name = "msp71xx_udc", 110 .id = 0, 111 .dev = { 112 .dma_mask = &msp_usbdev_dma_mask, 113 .coherent_dma_mask = 0xffffffffUL, 114 }, 115 .num_resources = ARRAY_SIZE(msp_usbdev0_resources), 116 .resource = msp_usbdev0_resources, 117 }, 118}; 119#endif /* CONFIG_USB_GADGET */ 120 121static int __init msp_usb_setup(void) 122{ 123 char *strp; 124 char envstr[32]; 125 struct platform_device *msp_devs[NUM_USB_DEVS]; 126 unsigned int val; 127 128 /* construct environment name usbmode */ 129 /* set usbmode <host/device> as pmon environment var */ 130 /* 131 * Could this perhaps be integrated into the "features" env var? 132 * Use the features key "U", and follow with "H" for host-mode, 133 * "D" for device-mode. If it works for Ethernet, why not USB... 134 * -- hammtrev, 2007/03/22 135 */ 136 snprintf((char *)&envstr[0], sizeof(envstr), "usbmode"); 137 138 /* set default host mode */ 139 val = 1; 140 141 /* get environment string */ 142 strp = prom_getenv((char *)&envstr[0]); 143 if (strp) { 144 /* compare string */ 145 if (!strcmp(strp, "device")) 146 val = 0; 147 } 148 149 if (val) { 150#if defined(CONFIG_USB_EHCI_HCD) 151 msp_devs[0] = &msp_usbhost0_device.dev; 152 ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name); 153#else 154 ppfinit("%s: echi_hcd not supported\n", __FILE__); 155#endif /* CONFIG_USB_EHCI_HCD */ 156 } else { 157#if defined(CONFIG_USB_GADGET) 158 /* get device mode structure */ 159 msp_devs[0] = &msp_usbdev0_device.dev; 160 ppfinit("platform add USB DEVICE done %s.\n" 161 , msp_devs[0]->name); 162#else 163 ppfinit("%s: usb_gadget not supported\n", __FILE__); 164#endif /* CONFIG_USB_GADGET */ 165 } 166 /* add device */ 167 platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs)); 168 169 return 0; 170} 171 172subsys_initcall(msp_usb_setup); 173#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */ 174