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1 | /* |
2 | * linux/arch/arm/mach-omap2/usb-ehci.c | |
3 | * | |
4 | * This file will contain the board specific details for the | |
5 | * Synopsys EHCI host controller on OMAP3430 | |
6 | * | |
7 | * Copyright (C) 2007 Texas Instruments | |
8 | * Author: Vikram Pandita <vikram.pandita@ti.com> | |
9 | * | |
10 | * Generalization by: | |
11 | * Felipe Balbi <felipe.balbi@nokia.com> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 as | |
15 | * published by the Free Software Foundation. | |
16 | */ | |
17 | ||
18 | #include <linux/types.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/delay.h> | |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/clk.h> | |
23 | #include <asm/io.h> | |
24 | #include <plat/mux.h> | |
25 | ||
26 | #include <mach/hardware.h> | |
27 | #include <mach/irqs.h> | |
28 | #include <plat/usb.h> | |
29 | ||
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30 | #include "mux.h" |
31 | ||
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32 | #if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE) |
33 | ||
34 | static struct resource ehci_resources[] = { | |
35 | { | |
36 | .start = OMAP34XX_EHCI_BASE, | |
37 | .end = OMAP34XX_EHCI_BASE + SZ_1K - 1, | |
38 | .flags = IORESOURCE_MEM, | |
39 | }, | |
40 | { | |
41 | .start = OMAP34XX_UHH_CONFIG_BASE, | |
42 | .end = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1, | |
43 | .flags = IORESOURCE_MEM, | |
44 | }, | |
45 | { | |
46 | .start = OMAP34XX_USBTLL_BASE, | |
47 | .end = OMAP34XX_USBTLL_BASE + SZ_4K - 1, | |
48 | .flags = IORESOURCE_MEM, | |
49 | }, | |
50 | { /* general IRQ */ | |
51 | .start = INT_34XX_EHCI_IRQ, | |
52 | .flags = IORESOURCE_IRQ, | |
53 | } | |
54 | }; | |
55 | ||
56 | static u64 ehci_dmamask = ~(u32)0; | |
57 | static struct platform_device ehci_device = { | |
58 | .name = "ehci-omap", | |
59 | .id = 0, | |
60 | .dev = { | |
61 | .dma_mask = &ehci_dmamask, | |
62 | .coherent_dma_mask = 0xffffffff, | |
63 | .platform_data = NULL, | |
64 | }, | |
65 | .num_resources = ARRAY_SIZE(ehci_resources), | |
66 | .resource = ehci_resources, | |
67 | }; | |
68 | ||
69 | /* MUX settings for EHCI pins */ | |
70 | /* | |
71 | * setup_ehci_io_mux - initialize IO pad mux for USBHOST | |
72 | */ | |
6f69a181 | 73 | static void setup_ehci_io_mux(const enum ehci_hcd_omap_mode *port_mode) |
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74 | { |
75 | switch (port_mode[0]) { | |
76 | case EHCI_HCD_OMAP_MODE_PHY: | |
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77 | omap_mux_init_signal("hsusb1_stp", OMAP_PIN_OUTPUT); |
78 | omap_mux_init_signal("hsusb1_clk", OMAP_PIN_OUTPUT); | |
79 | omap_mux_init_signal("hsusb1_dir", OMAP_PIN_INPUT_PULLDOWN); | |
80 | omap_mux_init_signal("hsusb1_nxt", OMAP_PIN_INPUT_PULLDOWN); | |
81 | omap_mux_init_signal("hsusb1_data0", OMAP_PIN_INPUT_PULLDOWN); | |
82 | omap_mux_init_signal("hsusb1_data1", OMAP_PIN_INPUT_PULLDOWN); | |
83 | omap_mux_init_signal("hsusb1_data2", OMAP_PIN_INPUT_PULLDOWN); | |
84 | omap_mux_init_signal("hsusb1_data3", OMAP_PIN_INPUT_PULLDOWN); | |
85 | omap_mux_init_signal("hsusb1_data4", OMAP_PIN_INPUT_PULLDOWN); | |
86 | omap_mux_init_signal("hsusb1_data5", OMAP_PIN_INPUT_PULLDOWN); | |
87 | omap_mux_init_signal("hsusb1_data6", OMAP_PIN_INPUT_PULLDOWN); | |
88 | omap_mux_init_signal("hsusb1_data7", OMAP_PIN_INPUT_PULLDOWN); | |
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89 | break; |
90 | case EHCI_HCD_OMAP_MODE_TLL: | |
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91 | omap_mux_init_signal("hsusb1_tll_stp", |
92 | OMAP_PIN_INPUT_PULLUP); | |
93 | omap_mux_init_signal("hsusb1_tll_clk", | |
94 | OMAP_PIN_INPUT_PULLDOWN); | |
95 | omap_mux_init_signal("hsusb1_tll_dir", | |
96 | OMAP_PIN_INPUT_PULLDOWN); | |
97 | omap_mux_init_signal("hsusb1_tll_nxt", | |
98 | OMAP_PIN_INPUT_PULLDOWN); | |
99 | omap_mux_init_signal("hsusb1_tll_data0", | |
100 | OMAP_PIN_INPUT_PULLDOWN); | |
101 | omap_mux_init_signal("hsusb1_tll_data1", | |
102 | OMAP_PIN_INPUT_PULLDOWN); | |
103 | omap_mux_init_signal("hsusb1_tll_data2", | |
104 | OMAP_PIN_INPUT_PULLDOWN); | |
105 | omap_mux_init_signal("hsusb1_tll_data3", | |
106 | OMAP_PIN_INPUT_PULLDOWN); | |
107 | omap_mux_init_signal("hsusb1_tll_data4", | |
108 | OMAP_PIN_INPUT_PULLDOWN); | |
109 | omap_mux_init_signal("hsusb1_tll_data5", | |
110 | OMAP_PIN_INPUT_PULLDOWN); | |
111 | omap_mux_init_signal("hsusb1_tll_data6", | |
112 | OMAP_PIN_INPUT_PULLDOWN); | |
113 | omap_mux_init_signal("hsusb1_tll_data7", | |
114 | OMAP_PIN_INPUT_PULLDOWN); | |
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115 | break; |
116 | case EHCI_HCD_OMAP_MODE_UNKNOWN: | |
117 | /* FALLTHROUGH */ | |
118 | default: | |
119 | break; | |
120 | } | |
121 | ||
122 | switch (port_mode[1]) { | |
123 | case EHCI_HCD_OMAP_MODE_PHY: | |
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124 | omap_mux_init_signal("hsusb2_stp", OMAP_PIN_OUTPUT); |
125 | omap_mux_init_signal("hsusb2_clk", OMAP_PIN_OUTPUT); | |
126 | omap_mux_init_signal("hsusb2_dir", OMAP_PIN_INPUT_PULLDOWN); | |
127 | omap_mux_init_signal("hsusb2_nxt", OMAP_PIN_INPUT_PULLDOWN); | |
128 | omap_mux_init_signal("hsusb2_data0", | |
129 | OMAP_PIN_INPUT_PULLDOWN); | |
130 | omap_mux_init_signal("hsusb2_data1", | |
131 | OMAP_PIN_INPUT_PULLDOWN); | |
132 | omap_mux_init_signal("hsusb2_data2", | |
133 | OMAP_PIN_INPUT_PULLDOWN); | |
134 | omap_mux_init_signal("hsusb2_data3", | |
135 | OMAP_PIN_INPUT_PULLDOWN); | |
136 | omap_mux_init_signal("hsusb2_data4", | |
137 | OMAP_PIN_INPUT_PULLDOWN); | |
138 | omap_mux_init_signal("hsusb2_data5", | |
139 | OMAP_PIN_INPUT_PULLDOWN); | |
140 | omap_mux_init_signal("hsusb2_data6", | |
141 | OMAP_PIN_INPUT_PULLDOWN); | |
142 | omap_mux_init_signal("hsusb2_data7", | |
143 | OMAP_PIN_INPUT_PULLDOWN); | |
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144 | break; |
145 | case EHCI_HCD_OMAP_MODE_TLL: | |
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146 | omap_mux_init_signal("hsusb2_tll_stp", |
147 | OMAP_PIN_INPUT_PULLUP); | |
148 | omap_mux_init_signal("hsusb2_tll_clk", | |
149 | OMAP_PIN_INPUT_PULLDOWN); | |
150 | omap_mux_init_signal("hsusb2_tll_dir", | |
151 | OMAP_PIN_INPUT_PULLDOWN); | |
152 | omap_mux_init_signal("hsusb2_tll_nxt", | |
153 | OMAP_PIN_INPUT_PULLDOWN); | |
154 | omap_mux_init_signal("hsusb2_tll_data0", | |
155 | OMAP_PIN_INPUT_PULLDOWN); | |
156 | omap_mux_init_signal("hsusb2_tll_data1", | |
157 | OMAP_PIN_INPUT_PULLDOWN); | |
158 | omap_mux_init_signal("hsusb2_tll_data2", | |
159 | OMAP_PIN_INPUT_PULLDOWN); | |
160 | omap_mux_init_signal("hsusb2_tll_data3", | |
161 | OMAP_PIN_INPUT_PULLDOWN); | |
162 | omap_mux_init_signal("hsusb2_tll_data4", | |
163 | OMAP_PIN_INPUT_PULLDOWN); | |
164 | omap_mux_init_signal("hsusb2_tll_data5", | |
165 | OMAP_PIN_INPUT_PULLDOWN); | |
166 | omap_mux_init_signal("hsusb2_tll_data6", | |
167 | OMAP_PIN_INPUT_PULLDOWN); | |
168 | omap_mux_init_signal("hsusb2_tll_data7", | |
169 | OMAP_PIN_INPUT_PULLDOWN); | |
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170 | break; |
171 | case EHCI_HCD_OMAP_MODE_UNKNOWN: | |
172 | /* FALLTHROUGH */ | |
173 | default: | |
174 | break; | |
175 | } | |
176 | ||
177 | switch (port_mode[2]) { | |
178 | case EHCI_HCD_OMAP_MODE_PHY: | |
179 | printk(KERN_WARNING "Port3 can't be used in PHY mode\n"); | |
180 | break; | |
181 | case EHCI_HCD_OMAP_MODE_TLL: | |
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182 | omap_mux_init_signal("hsusb3_tll_stp", |
183 | OMAP_PIN_INPUT_PULLUP); | |
184 | omap_mux_init_signal("hsusb3_tll_clk", | |
185 | OMAP_PIN_INPUT_PULLDOWN); | |
186 | omap_mux_init_signal("hsusb3_tll_dir", | |
187 | OMAP_PIN_INPUT_PULLDOWN); | |
188 | omap_mux_init_signal("hsusb3_tll_nxt", | |
189 | OMAP_PIN_INPUT_PULLDOWN); | |
190 | omap_mux_init_signal("hsusb3_tll_data0", | |
191 | OMAP_PIN_INPUT_PULLDOWN); | |
192 | omap_mux_init_signal("hsusb3_tll_data1", | |
193 | OMAP_PIN_INPUT_PULLDOWN); | |
194 | omap_mux_init_signal("hsusb3_tll_data2", | |
195 | OMAP_PIN_INPUT_PULLDOWN); | |
196 | omap_mux_init_signal("hsusb3_tll_data3", | |
197 | OMAP_PIN_INPUT_PULLDOWN); | |
198 | omap_mux_init_signal("hsusb3_tll_data4", | |
199 | OMAP_PIN_INPUT_PULLDOWN); | |
200 | omap_mux_init_signal("hsusb3_tll_data5", | |
201 | OMAP_PIN_INPUT_PULLDOWN); | |
202 | omap_mux_init_signal("hsusb3_tll_data6", | |
203 | OMAP_PIN_INPUT_PULLDOWN); | |
204 | omap_mux_init_signal("hsusb3_tll_data7", | |
205 | OMAP_PIN_INPUT_PULLDOWN); | |
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206 | break; |
207 | case EHCI_HCD_OMAP_MODE_UNKNOWN: | |
208 | /* FALLTHROUGH */ | |
209 | default: | |
210 | break; | |
211 | } | |
212 | ||
213 | return; | |
214 | } | |
215 | ||
6f69a181 | 216 | void __init usb_ehci_init(const struct ehci_hcd_omap_platform_data *pdata) |
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217 | { |
218 | platform_device_add_data(&ehci_device, pdata, sizeof(*pdata)); | |
219 | ||
220 | /* Setup Pin IO MUX for EHCI */ | |
221 | if (cpu_is_omap34xx()) | |
222 | setup_ehci_io_mux(pdata->port_mode); | |
223 | ||
224 | if (platform_device_register(&ehci_device) < 0) { | |
225 | printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n"); | |
226 | return; | |
227 | } | |
228 | } | |
229 | ||
230 | #else | |
231 | ||
6f69a181 | 232 | void __init usb_ehci_init(const struct ehci_hcd_omap_platform_data *pdata) |
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233 | |
234 | { | |
235 | } | |
236 | ||
237 | #endif /* CONFIG_USB_EHCI_HCD */ | |
238 |