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35832e26 MSJ |
1 | /* |
2 | * The setup file for USB related hardware on PMC-Sierra MSP processors. | |
3 | * | |
5027070b | 4 | * Copyright 2006 PMC-Sierra, Inc. |
35832e26 MSJ |
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 | */ | |
5027070b | 26 | #if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET) |
35832e26 | 27 | |
35832e26 MSJ |
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> | |
5027070b A |
37 | #include <msp_usb.h> |
38 | ||
35832e26 MSJ |
39 | |
40 | #if defined(CONFIG_USB_EHCI_HCD) | |
5027070b A |
41 | static struct resource msp_usbhost0_resources[] = { |
42 | [0] = { /* EHCI-HS operational and capabilities registers */ | |
70342287 RB |
43 | .start = MSP_USB0_HS_START, |
44 | .end = MSP_USB0_HS_END, | |
45 | .flags = IORESOURCE_MEM, | |
35832e26 MSJ |
46 | }, |
47 | [1] = { | |
70342287 RB |
48 | .start = MSP_INT_USB, |
49 | .end = MSP_INT_USB, | |
50 | .flags = IORESOURCE_IRQ, | |
5027070b A |
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, | |
35832e26 MSJ |
61 | }, |
62 | }; | |
63 | ||
5027070b | 64 | static u64 msp_usbhost0_dma_mask = 0xffffffffUL; |
35832e26 | 65 | |
5027070b | 66 | static struct mspusb_device msp_usbhost0_device = { |
35832e26 | 67 | .dev = { |
5027070b A |
68 | .name = "pmcmsp-ehci", |
69 | .id = 0, | |
70 | .dev = { | |
71 | .dma_mask = &msp_usbhost0_dma_mask, | |
72 | .coherent_dma_mask = 0xffffffffUL, | |
73 | }, | |
70342287 RB |
74 | .num_resources = ARRAY_SIZE(msp_usbhost0_resources), |
75 | .resource = msp_usbhost0_resources, | |
35832e26 | 76 | }, |
35832e26 | 77 | }; |
5027070b | 78 | #endif /* CONFIG_USB_EHCI_HCD */ |
35832e26 | 79 | |
5027070b A |
80 | #if defined(CONFIG_USB_GADGET) |
81 | static struct resource msp_usbdev0_resources[] = { | |
82 | [0] = { /* EHCI-HS operational and capabilities registers */ | |
70342287 RB |
83 | .start = MSP_USB0_HS_START, |
84 | .end = MSP_USB0_HS_END, | |
85 | .flags = IORESOURCE_MEM, | |
5027070b A |
86 | }, |
87 | [1] = { | |
70342287 RB |
88 | .start = MSP_INT_USB, |
89 | .end = MSP_INT_USB, | |
90 | .flags = IORESOURCE_IRQ, | |
5027070b A |
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 | }; | |
35832e26 | 103 | |
5027070b A |
104 | static u64 msp_usbdev_dma_mask = 0xffffffffUL; |
105 | ||
106 | /* This may need to be converted to a mspusb_device, too. */ | |
107 | static struct mspusb_device msp_usbdev0_device = { | |
35832e26 | 108 | .dev = { |
5027070b A |
109 | .name = "msp71xx_udc", |
110 | .id = 0, | |
111 | .dev = { | |
112 | .dma_mask = &msp_usbdev_dma_mask, | |
113 | .coherent_dma_mask = 0xffffffffUL, | |
114 | }, | |
70342287 RB |
115 | .num_resources = ARRAY_SIZE(msp_usbdev0_resources), |
116 | .resource = msp_usbdev0_resources, | |
35832e26 | 117 | }, |
35832e26 | 118 | }; |
5027070b | 119 | #endif /* CONFIG_USB_GADGET */ |
35832e26 MSJ |
120 | |
121 | static int __init msp_usb_setup(void) | |
122 | { | |
5027070b A |
123 | char *strp; |
124 | char envstr[32]; | |
125 | struct platform_device *msp_devs[NUM_USB_DEVS]; | |
126 | unsigned int val; | |
35832e26 | 127 | |
5027070b A |
128 | /* construct environment name usbmode */ |
129 | /* set usbmode <host/device> as pmon environment var */ | |
35832e26 | 130 | /* |
5027070b A |
131 | * Could this perhaps be integrated into the "features" env var? |
132 | * Use the features key "U", and follow with "H" for host-mode, | |
70342287 | 133 | * "D" for device-mode. If it works for Ethernet, why not USB... |
5027070b | 134 | * -- hammtrev, 2007/03/22 |
35832e26 MSJ |
135 | */ |
136 | snprintf((char *)&envstr[0], sizeof(envstr), "usbmode"); | |
137 | ||
5027070b | 138 | /* set default host mode */ |
35832e26 | 139 | val = 1; |
35832e26 MSJ |
140 | |
141 | /* get environment string */ | |
142 | strp = prom_getenv((char *)&envstr[0]); | |
143 | if (strp) { | |
5027070b | 144 | /* compare string */ |
35832e26 MSJ |
145 | if (!strcmp(strp, "device")) |
146 | val = 0; | |
147 | } | |
148 | ||
149 | if (val) { | |
150 | #if defined(CONFIG_USB_EHCI_HCD) | |
5027070b A |
151 | msp_devs[0] = &msp_usbhost0_device.dev; |
152 | ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name); | |
5027070b A |
153 | #else |
154 | ppfinit("%s: echi_hcd not supported\n", __FILE__); | |
70342287 | 155 | #endif /* CONFIG_USB_EHCI_HCD */ |
5027070b | 156 | } else { |
35832e26 | 157 | #if defined(CONFIG_USB_GADGET) |
35832e26 | 158 | /* get device mode structure */ |
5027070b A |
159 | msp_devs[0] = &msp_usbdev0_device.dev; |
160 | ppfinit("platform add USB DEVICE done %s.\n" | |
161 | , msp_devs[0]->name); | |
5027070b A |
162 | #else |
163 | ppfinit("%s: usb_gadget not supported\n", __FILE__); | |
70342287 | 164 | #endif /* CONFIG_USB_GADGET */ |
35832e26 | 165 | } |
5027070b A |
166 | /* add device */ |
167 | platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs)); | |
35832e26 | 168 | |
5027070b | 169 | return 0; |
35832e26 MSJ |
170 | } |
171 | ||
172 | subsys_initcall(msp_usb_setup); | |
5027070b | 173 | #endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */ |