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18cb7aca FB |
1 | /* |
2 | * linux/arch/arm/mach-omap2/usb-musb.c | |
3 | * | |
4 | * This file will contain the board specific details for the | |
5 | * MENTOR USB OTG controller on OMAP3430 | |
6 | * | |
7 | * Copyright (C) 2007-2008 Texas Instruments | |
8 | * Copyright (C) 2008 Nokia Corporation | |
9 | * Author: Vikram Pandita | |
10 | * | |
11 | * Generalization by: | |
12 | * Felipe Balbi <felipe.balbi@nokia.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License version 2 as | |
16 | * published by the Free Software Foundation. | |
17 | */ | |
18 | ||
19 | #include <linux/types.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/clk.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/io.h> | |
26 | ||
27 | #include <linux/usb/musb.h> | |
28 | ||
29 | #include <mach/hardware.h> | |
30 | #include <mach/irqs.h> | |
3a0d30bc | 31 | #include <mach/am35xx.h> |
ce491cf8 | 32 | #include <plat/usb.h> |
18a26892 | 33 | #include <plat/omap_device.h> |
2aae4221 | 34 | #include "mux.h" |
18cb7aca | 35 | |
7c925546 | 36 | #if defined(CONFIG_USB_MUSB_OMAP2PLUS) || defined (CONFIG_USB_MUSB_AM35X) |
94a3ef6f | 37 | |
18cb7aca FB |
38 | static struct musb_hdrc_config musb_config = { |
39 | .multipoint = 1, | |
40 | .dyn_fifo = 1, | |
18cb7aca | 41 | .num_eps = 16, |
18cb7aca | 42 | .ram_bits = 12, |
18cb7aca FB |
43 | }; |
44 | ||
45 | static struct musb_hdrc_platform_data musb_plat = { | |
46 | #ifdef CONFIG_USB_MUSB_OTG | |
47 | .mode = MUSB_OTG, | |
48 | #elif defined(CONFIG_USB_MUSB_HDRC_HCD) | |
49 | .mode = MUSB_HOST, | |
50 | #elif defined(CONFIG_USB_GADGET_MUSB_HDRC) | |
51 | .mode = MUSB_PERIPHERAL, | |
52 | #endif | |
53 | /* .clock is set dynamically */ | |
18cb7aca FB |
54 | .config = &musb_config, |
55 | ||
56 | /* REVISIT charge pump on TWL4030 can supply up to | |
57 | * 100 mA ... but this value is board-specific, like | |
58 | * "mode", and should be passed to usb_musb_init(). | |
59 | */ | |
60 | .power = 50, /* up to 100 mA */ | |
61 | }; | |
62 | ||
e930438c | 63 | static u64 musb_dmamask = DMA_BIT_MASK(32); |
18cb7aca | 64 | |
18a26892 HH |
65 | static struct omap_device_pm_latency omap_musb_latency[] = { |
66 | { | |
67 | .deactivate_func = omap_device_idle_hwmods, | |
68 | .activate_func = omap_device_enable_hwmods, | |
69 | .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, | |
18cb7aca | 70 | }, |
18cb7aca FB |
71 | }; |
72 | ||
2aae4221 AG |
73 | static void usb_musb_mux_init(struct omap_musb_board_data *board_data) |
74 | { | |
75 | switch (board_data->interface_type) { | |
76 | case MUSB_INTERFACE_UTMI: | |
77 | omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT); | |
78 | omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT); | |
79 | break; | |
80 | case MUSB_INTERFACE_ULPI: | |
81 | omap_mux_init_signal("usba0_ulpiphy_clk", | |
82 | OMAP_PIN_INPUT_PULLDOWN); | |
83 | omap_mux_init_signal("usba0_ulpiphy_stp", | |
84 | OMAP_PIN_INPUT_PULLDOWN); | |
85 | omap_mux_init_signal("usba0_ulpiphy_dir", | |
86 | OMAP_PIN_INPUT_PULLDOWN); | |
87 | omap_mux_init_signal("usba0_ulpiphy_nxt", | |
88 | OMAP_PIN_INPUT_PULLDOWN); | |
89 | omap_mux_init_signal("usba0_ulpiphy_dat0", | |
90 | OMAP_PIN_INPUT_PULLDOWN); | |
91 | omap_mux_init_signal("usba0_ulpiphy_dat1", | |
92 | OMAP_PIN_INPUT_PULLDOWN); | |
93 | omap_mux_init_signal("usba0_ulpiphy_dat2", | |
94 | OMAP_PIN_INPUT_PULLDOWN); | |
95 | omap_mux_init_signal("usba0_ulpiphy_dat3", | |
96 | OMAP_PIN_INPUT_PULLDOWN); | |
97 | omap_mux_init_signal("usba0_ulpiphy_dat4", | |
98 | OMAP_PIN_INPUT_PULLDOWN); | |
99 | omap_mux_init_signal("usba0_ulpiphy_dat5", | |
100 | OMAP_PIN_INPUT_PULLDOWN); | |
101 | omap_mux_init_signal("usba0_ulpiphy_dat6", | |
102 | OMAP_PIN_INPUT_PULLDOWN); | |
103 | omap_mux_init_signal("usba0_ulpiphy_dat7", | |
104 | OMAP_PIN_INPUT_PULLDOWN); | |
105 | break; | |
106 | default: | |
107 | break; | |
108 | } | |
109 | } | |
18a26892 | 110 | |
884b8369 | 111 | void __init usb_musb_init(struct omap_musb_board_data *board_data) |
18cb7aca | 112 | { |
18a26892 HH |
113 | struct omap_hwmod *oh; |
114 | struct omap_device *od; | |
115 | struct platform_device *pdev; | |
116 | struct device *dev; | |
117 | int bus_id = -1; | |
118 | const char *oh_name, *name; | |
2aae4221 | 119 | |
18a26892 | 120 | if (cpu_is_omap3517() || cpu_is_omap3505()) { |
bce06683 | 121 | } else if (cpu_is_omap44xx()) { |
2aae4221 | 122 | usb_musb_mux_init(board_data); |
bce06683 | 123 | } |
18cb7aca FB |
124 | |
125 | /* | |
126 | * REVISIT: This line can be removed once all the platforms using | |
127 | * musb_core.c have been converted to use use clkdev. | |
128 | */ | |
129 | musb_plat.clock = "ick"; | |
884b8369 MM |
130 | musb_plat.board_data = board_data; |
131 | musb_plat.power = board_data->power >> 1; | |
132 | musb_plat.mode = board_data->mode; | |
58815fa3 | 133 | musb_plat.extvbus = board_data->extvbus; |
18cb7aca | 134 | |
fb91cde4 HH |
135 | if (cpu_is_omap44xx()) |
136 | omap4430_phy_init(dev); | |
137 | ||
18a26892 HH |
138 | if (cpu_is_omap3517() || cpu_is_omap3505()) { |
139 | oh_name = "am35x_otg_hs"; | |
140 | name = "musb-am35x"; | |
141 | } else { | |
142 | oh_name = "usb_otg_hs"; | |
143 | name = "musb-omap2430"; | |
144 | } | |
145 | ||
146 | oh = omap_hwmod_lookup(oh_name); | |
147 | if (!oh) { | |
148 | pr_err("Could not look up %s\n", oh_name); | |
149 | return; | |
150 | } | |
151 | ||
152 | od = omap_device_build(name, bus_id, oh, &musb_plat, | |
153 | sizeof(musb_plat), omap_musb_latency, | |
154 | ARRAY_SIZE(omap_musb_latency), false); | |
155 | if (IS_ERR(od)) { | |
156 | pr_err("Could not build omap_device for %s %s\n", | |
157 | name, oh_name); | |
158 | return; | |
159 | } | |
160 | ||
161 | pdev = &od->pdev; | |
162 | dev = &pdev->dev; | |
163 | get_device(dev); | |
164 | dev->dma_mask = &musb_dmamask; | |
165 | dev->coherent_dma_mask = musb_dmamask; | |
166 | put_device(dev); | |
94a3ef6f PDS |
167 | } |
168 | ||
169 | #else | |
884b8369 | 170 | void __init usb_musb_init(struct omap_musb_board_data *board_data) |
94a3ef6f | 171 | { |
18cb7aca | 172 | } |
94a3ef6f | 173 | #endif /* CONFIG_USB_MUSB_SOC */ |