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Felipe Balbi18cb7ac2009-03-23 18:34:06 -07001/*
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>
Tony Lindgrence491cf2009-10-20 09:40:47 -070031#include <plat/mux.h>
32#include <plat/usb.h>
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070033
Peter 'p2' De Schrijver94a3ef62009-01-19 19:09:22 +020034#ifdef CONFIG_USB_MUSB_SOC
35
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070036static struct resource musb_resources[] = {
37 [0] = { /* start and end set dynamically */
38 .flags = IORESOURCE_MEM,
39 },
40 [1] = { /* general IRQ */
41 .start = INT_243X_HS_USB_MC,
42 .flags = IORESOURCE_IRQ,
43 },
44 [2] = { /* DMA IRQ */
45 .start = INT_243X_HS_USB_DMA,
46 .flags = IORESOURCE_IRQ,
47 },
48};
49
50static int clk_on;
51
52static int musb_set_clock(struct clk *clk, int state)
53{
54 if (state) {
55 if (clk_on > 0)
56 return -ENODEV;
57
58 clk_enable(clk);
59 clk_on = 1;
60 } else {
61 if (clk_on == 0)
62 return -ENODEV;
63
64 clk_disable(clk);
65 clk_on = 0;
66 }
67
68 return 0;
69}
70
71static struct musb_hdrc_eps_bits musb_eps[] = {
72 { "ep1_tx", 10, },
73 { "ep1_rx", 10, },
74 { "ep2_tx", 9, },
75 { "ep2_rx", 9, },
76 { "ep3_tx", 3, },
77 { "ep3_rx", 3, },
78 { "ep4_tx", 3, },
79 { "ep4_rx", 3, },
80 { "ep5_tx", 3, },
81 { "ep5_rx", 3, },
82 { "ep6_tx", 3, },
83 { "ep6_rx", 3, },
84 { "ep7_tx", 3, },
85 { "ep7_rx", 3, },
86 { "ep8_tx", 2, },
87 { "ep8_rx", 2, },
88 { "ep9_tx", 2, },
89 { "ep9_rx", 2, },
90 { "ep10_tx", 2, },
91 { "ep10_rx", 2, },
92 { "ep11_tx", 2, },
93 { "ep11_rx", 2, },
94 { "ep12_tx", 2, },
95 { "ep12_rx", 2, },
96 { "ep13_tx", 2, },
97 { "ep13_rx", 2, },
98 { "ep14_tx", 2, },
99 { "ep14_rx", 2, },
100 { "ep15_tx", 2, },
101 { "ep15_rx", 2, },
102};
103
104static struct musb_hdrc_config musb_config = {
105 .multipoint = 1,
106 .dyn_fifo = 1,
107 .soft_con = 1,
108 .dma = 1,
109 .num_eps = 16,
110 .dma_channels = 7,
111 .dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
112 .ram_bits = 12,
113 .eps_bits = musb_eps,
114};
115
116static struct musb_hdrc_platform_data musb_plat = {
117#ifdef CONFIG_USB_MUSB_OTG
118 .mode = MUSB_OTG,
119#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
120 .mode = MUSB_HOST,
121#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
122 .mode = MUSB_PERIPHERAL,
123#endif
124 /* .clock is set dynamically */
125 .set_clock = musb_set_clock,
126 .config = &musb_config,
127
128 /* REVISIT charge pump on TWL4030 can supply up to
129 * 100 mA ... but this value is board-specific, like
130 * "mode", and should be passed to usb_musb_init().
131 */
132 .power = 50, /* up to 100 mA */
133};
134
Yang Hongyange9304382009-04-13 14:40:14 -0700135static u64 musb_dmamask = DMA_BIT_MASK(32);
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700136
137static struct platform_device musb_device = {
138 .name = "musb_hdrc",
139 .id = -1,
140 .dev = {
141 .dma_mask = &musb_dmamask,
Yang Hongyange9304382009-04-13 14:40:14 -0700142 .coherent_dma_mask = DMA_BIT_MASK(32),
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700143 .platform_data = &musb_plat,
144 },
145 .num_resources = ARRAY_SIZE(musb_resources),
146 .resource = musb_resources,
147};
148
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700149void __init usb_musb_init(void)
150{
151 if (cpu_is_omap243x())
152 musb_resources[0].start = OMAP243X_HS_BASE;
153 else
154 musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE;
155 musb_resources[0].end = musb_resources[0].start + SZ_8K - 1;
156
157 /*
158 * REVISIT: This line can be removed once all the platforms using
159 * musb_core.c have been converted to use use clkdev.
160 */
161 musb_plat.clock = "ick";
162
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700163 if (platform_device_register(&musb_device) < 0) {
164 printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n");
165 return;
166 }
167}
Peter 'p2' De Schrijver94a3ef62009-01-19 19:09:22 +0200168
169#else
170void __init usb_musb_init(void)
171{
Peter 'p2' De Schrijver94a3ef62009-01-19 19:09:22 +0200172}
173#endif /* CONFIG_USB_MUSB_SOC */