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-rw-r--r--arch/mips/pmcs-msp71xx/msp_usb.c263
1 files changed, 263 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 000000000000..4dab915696e7
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+++ b/arch/mips/pmcs-msp71xx/msp_usb.c
@@ -0,0 +1,263 @@
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
79/* MSP7140/MSP82XX has two USB2 hosts. */
80#ifdef CONFIG_MSP_HAS_DUAL_USB
81static u64 msp_usbhost1_dma_mask = 0xffffffffUL;
82
83static struct resource msp_usbhost1_resources[] = {
84 [0] = { /* EHCI-HS operational and capabilities registers */
85 .start = MSP_USB1_HS_START,
86 .end = MSP_USB1_HS_END,
87 .flags = IORESOURCE_MEM,
88 },
89 [1] = {
90 .start = MSP_INT_USB,
91 .end = MSP_INT_USB,
92 .flags = IORESOURCE_IRQ,
93 },
94 [2] = { /* MSBus-to-AMBA bridge register space */
95 .start = MSP_USB1_MAB_START,
96 .end = MSP_USB1_MAB_END,
97 .flags = IORESOURCE_MEM,
98 },
99 [3] = { /* Identification and general hardware parameters */
100 .start = MSP_USB1_ID_START,
101 .end = MSP_USB1_ID_END,
102 .flags = IORESOURCE_MEM,
103 },
104};
105
106static struct mspusb_device msp_usbhost1_device = {
107 .dev = {
108 .name = "pmcmsp-ehci",
109 .id = 1,
110 .dev = {
111 .dma_mask = &msp_usbhost1_dma_mask,
112 .coherent_dma_mask = 0xffffffffUL,
113 },
114 .num_resources = ARRAY_SIZE(msp_usbhost1_resources),
115 .resource = msp_usbhost1_resources,
116 },
117};
118#endif /* CONFIG_MSP_HAS_DUAL_USB */
119#endif /* CONFIG_USB_EHCI_HCD */
120
121#if defined(CONFIG_USB_GADGET)
122static struct resource msp_usbdev0_resources[] = {
123 [0] = { /* EHCI-HS operational and capabilities registers */
124 .start = MSP_USB0_HS_START,
125 .end = MSP_USB0_HS_END,
126 .flags = IORESOURCE_MEM,
127 },
128 [1] = {
129 .start = MSP_INT_USB,
130 .end = MSP_INT_USB,
131 .flags = IORESOURCE_IRQ,
132 },
133 [2] = { /* MSBus-to-AMBA bridge register space */
134 .start = MSP_USB0_MAB_START,
135 .end = MSP_USB0_MAB_END,
136 .flags = IORESOURCE_MEM,
137 },
138 [3] = { /* Identification and general hardware parameters */
139 .start = MSP_USB0_ID_START,
140 .end = MSP_USB0_ID_END,
141 .flags = IORESOURCE_MEM,
142 },
143};
144
145static u64 msp_usbdev_dma_mask = 0xffffffffUL;
146
147/* This may need to be converted to a mspusb_device, too. */
148static struct mspusb_device msp_usbdev0_device = {
149 .dev = {
150 .name = "msp71xx_udc",
151 .id = 0,
152 .dev = {
153 .dma_mask = &msp_usbdev_dma_mask,
154 .coherent_dma_mask = 0xffffffffUL,
155 },
156 .num_resources = ARRAY_SIZE(msp_usbdev0_resources),
157 .resource = msp_usbdev0_resources,
158 },
159};
160
161#ifdef CONFIG_MSP_HAS_DUAL_USB
162static struct resource msp_usbdev1_resources[] = {
163 [0] = { /* EHCI-HS operational and capabilities registers */
164 .start = MSP_USB1_HS_START,
165 .end = MSP_USB1_HS_END,
166 .flags = IORESOURCE_MEM,
167 },
168 [1] = {
169 .start = MSP_INT_USB,
170 .end = MSP_INT_USB,
171 .flags = IORESOURCE_IRQ,
172 },
173 [2] = { /* MSBus-to-AMBA bridge register space */
174 .start = MSP_USB1_MAB_START,
175 .end = MSP_USB1_MAB_END,
176 .flags = IORESOURCE_MEM,
177 },
178 [3] = { /* Identification and general hardware parameters */
179 .start = MSP_USB1_ID_START,
180 .end = MSP_USB1_ID_END,
181 .flags = IORESOURCE_MEM,
182 },
183};
184
185/* This may need to be converted to a mspusb_device, too. */
186static struct mspusb_device msp_usbdev1_device = {
187 .dev = {
188 .name = "msp71xx_udc",
189 .id = 0,
190 .dev = {
191 .dma_mask = &msp_usbdev_dma_mask,
192 .coherent_dma_mask = 0xffffffffUL,
193 },
194 .num_resources = ARRAY_SIZE(msp_usbdev1_resources),
195 .resource = msp_usbdev1_resources,
196 },
197};
198
199#endif /* CONFIG_MSP_HAS_DUAL_USB */
200#endif /* CONFIG_USB_GADGET */
201
202static int __init msp_usb_setup(void)
203{
204 char *strp;
205 char envstr[32];
206 struct platform_device *msp_devs[NUM_USB_DEVS];
207 unsigned int val;
208
209 /* construct environment name usbmode */
210 /* set usbmode <host/device> as pmon environment var */
211 /*
212 * Could this perhaps be integrated into the "features" env var?
213 * Use the features key "U", and follow with "H" for host-mode,
214 * "D" for device-mode. If it works for Ethernet, why not USB...
215 * -- hammtrev, 2007/03/22
216 */
217 snprintf((char *)&envstr[0], sizeof(envstr), "usbmode");
218
219 /* set default host mode */
220 val = 1;
221
222 /* get environment string */
223 strp = prom_getenv((char *)&envstr[0]);
224 if (strp) {
225 /* compare string */
226 if (!strcmp(strp, "device"))
227 val = 0;
228 }
229
230 if (val) {
231#if defined(CONFIG_USB_EHCI_HCD)
232 msp_devs[0] = &msp_usbhost0_device.dev;
233 ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name);
234#ifdef CONFIG_MSP_HAS_DUAL_USB
235 msp_devs[1] = &msp_usbhost1_device.dev;
236 ppfinit("platform add USB HOST done %s.\n", msp_devs[1]->name);
237#endif
238#else
239 ppfinit("%s: echi_hcd not supported\n", __FILE__);
240#endif /* CONFIG_USB_EHCI_HCD */
241 } else {
242#if defined(CONFIG_USB_GADGET)
243 /* get device mode structure */
244 msp_devs[0] = &msp_usbdev0_device.dev;
245 ppfinit("platform add USB DEVICE done %s.\n"
246 , msp_devs[0]->name);
247#ifdef CONFIG_MSP_HAS_DUAL_USB
248 msp_devs[1] = &msp_usbdev1_device.dev;
249 ppfinit("platform add USB DEVICE done %s.\n"
250 , msp_devs[1]->name);
251#endif
252#else
253 ppfinit("%s: usb_gadget not supported\n", __FILE__);
254#endif /* CONFIG_USB_GADGET */
255 }
256 /* add device */
257 platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
258
259 return 0;
260}
261
262subsys_initcall(msp_usb_setup);
263#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
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