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#include <linux/usb/musb.h>
27
28#include "omap_device.h"
29#include "soc.h"
30#include "mux.h"
31#include "usb.h"
32
33static struct musb_hdrc_config musb_config = {
34	.multipoint	= 1,
35	.dyn_fifo	= 1,
36	.num_eps	= 16,
37	.ram_bits	= 12,
38};
39
40static struct musb_hdrc_platform_data musb_plat = {
41	.mode		= MUSB_OTG,
42
43	/* .clock is set dynamically */
44	.config		= &musb_config,
45
46	/* REVISIT charge pump on TWL4030 can supply up to
47	 * 100 mA ... but this value is board-specific, like
48	 * "mode", and should be passed to usb_musb_init().
49	 */
50	.power		= 50,			/* up to 100 mA */
51};
52
53static u64 musb_dmamask = DMA_BIT_MASK(32);
54
55static struct omap_musb_board_data musb_default_board_data = {
56	.interface_type		= MUSB_INTERFACE_ULPI,
57	.mode			= MUSB_OTG,
58	.power			= 100,
59};
60
61void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
62{
63	struct omap_hwmod		*oh;
64	struct platform_device		*pdev;
65	struct device			*dev;
66	int				bus_id = -1;
67	const char			*oh_name, *name;
68	struct omap_musb_board_data	*board_data;
69
70	if (musb_board_data)
71		board_data = musb_board_data;
72	else
73		board_data = &musb_default_board_data;
74
75	/*
76	 * REVISIT: This line can be removed once all the platforms using
77	 * musb_core.c have been converted to use use clkdev.
78	 */
79	musb_plat.clock = "ick";
80	musb_plat.board_data = board_data;
81	musb_plat.power = board_data->power >> 1;
82	musb_plat.mode = board_data->mode;
83	musb_plat.extvbus = board_data->extvbus;
84
85	oh_name = "usb_otg_hs";
86	name = "musb-omap2430";
87
88        oh = omap_hwmod_lookup(oh_name);
89        if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
90                 __func__, oh_name))
91                return;
92
93	pdev = omap_device_build(name, bus_id, oh, &musb_plat,
94				 sizeof(musb_plat));
95	if (IS_ERR(pdev)) {
96		pr_err("Could not build omap_device for %s %s\n",
97						name, oh_name);
98		return;
99	}
100
101	dev = &pdev->dev;
102	get_device(dev);
103	dev->dma_mask = &musb_dmamask;
104	dev->coherent_dma_mask = musb_dmamask;
105	put_device(dev);
106}
107