Merge branch 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspen...
[pandora-kernel.git] / arch / mips / pmc-sierra / msp71xx / msp_usb.c
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)
41 static 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
64 static u64 msp_usbhost0_dma_mask = 0xffffffffUL;
65
66 static 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
81 static u64 msp_usbhost1_dma_mask = 0xffffffffUL;
82
83 static 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
106 static 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)
122 static 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
145 static u64 msp_usbdev_dma_mask = 0xffffffffUL;
146
147 /* This may need to be converted to a mspusb_device, too. */
148 static 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
162 static 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. */
186 static 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
202 static 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
262 subsys_initcall(msp_usb_setup);
263 #endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */