summaryrefslogtreecommitdiff
path: root/arch/mips/pmcs-msp71xx/msp_usb.c
blob: 4dab915696e7749e8743b0bf2b5b21c47e09a102 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
/*
 * 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,
	},
};

/* MSP7140/MSP82XX has two USB2 hosts. */
#ifdef CONFIG_MSP_HAS_DUAL_USB
static u64 msp_usbhost1_dma_mask = 0xffffffffUL;

static struct resource msp_usbhost1_resources[] = {
	[0] = { /* EHCI-HS operational and capabilities registers */
		.start	= MSP_USB1_HS_START,
		.end	= MSP_USB1_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_USB1_MAB_START,
		.end	= MSP_USB1_MAB_END,
		.flags	= IORESOURCE_MEM,
	},
	[3] = { /* Identification and general hardware parameters */
		.start	= MSP_USB1_ID_START,
		.end	= MSP_USB1_ID_END,
		.flags	= IORESOURCE_MEM,
	},
};

static struct mspusb_device msp_usbhost1_device = {
	.dev	= {
		.name	= "pmcmsp-ehci",
		.id	= 1,
		.dev	= {
			.dma_mask = &msp_usbhost1_dma_mask,
			.coherent_dma_mask = 0xffffffffUL,
		},
		.num_resources	= ARRAY_SIZE(msp_usbhost1_resources),
		.resource	= msp_usbhost1_resources,
	},
};
#endif /* CONFIG_MSP_HAS_DUAL_USB */
#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,
	},
};

#ifdef CONFIG_MSP_HAS_DUAL_USB
static struct resource msp_usbdev1_resources[] = {
	[0] = { /* EHCI-HS operational and capabilities registers */
		.start	= MSP_USB1_HS_START,
		.end	= MSP_USB1_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_USB1_MAB_START,
		.end	= MSP_USB1_MAB_END,
		.flags	= IORESOURCE_MEM,
	},
	[3] = { /* Identification and general hardware parameters */
		.start	= MSP_USB1_ID_START,
		.end	= MSP_USB1_ID_END,
		.flags	= IORESOURCE_MEM,
	},
};

/* This may need to be converted to a mspusb_device, too. */
static struct mspusb_device msp_usbdev1_device = {
	.dev	= {
		.name	= "msp71xx_udc",
		.id	= 0,
		.dev	= {
			.dma_mask = &msp_usbdev_dma_mask,
			.coherent_dma_mask = 0xffffffffUL,
		},
		.num_resources	= ARRAY_SIZE(msp_usbdev1_resources),
		.resource	= msp_usbdev1_resources,
	},
};

#endif /* CONFIG_MSP_HAS_DUAL_USB */
#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);
#ifdef CONFIG_MSP_HAS_DUAL_USB
		msp_devs[1] = &msp_usbhost1_device.dev;
		ppfinit("platform add USB HOST done %s.\n", msp_devs[1]->name);
#endif
#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);
#ifdef CONFIG_MSP_HAS_DUAL_USB
		msp_devs[1] = &msp_usbdev1_device.dev;
		ppfinit("platform add USB DEVICE done %s.\n"
					, msp_devs[1]->name);
#endif
#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 */