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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>
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070026#include <linux/usb/musb.h>
27
Tony Lindgrence491cf2009-10-20 09:40:47 -070028#include <plat/usb.h>
Tony Lindgren25c7d492012-10-02 17:25:48 -070029#include "omap_device.h"
Tony Lindgrendbc04162012-08-31 10:59:07 -070030
Tony Lindgrene4c060d2012-10-05 13:25:59 -070031#include "soc.h"
Anand Gadiyar2aae4222011-02-16 15:42:15 +053032#include "mux.h"
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070033
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070034static struct musb_hdrc_config musb_config = {
35 .multipoint = 1,
36 .dyn_fifo = 1,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070037 .num_eps = 16,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070038 .ram_bits = 12,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070039};
40
41static struct musb_hdrc_platform_data musb_plat = {
Tony Lindgren310018d2012-06-20 07:18:15 -070042#ifdef CONFIG_USB_GADGET_MUSB_HDRC
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070043 .mode = MUSB_OTG,
Tony Lindgren310018d2012-06-20 07:18:15 -070044#else
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070045 .mode = MUSB_HOST,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070046#endif
47 /* .clock is set dynamically */
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070048 .config = &musb_config,
49
50 /* REVISIT charge pump on TWL4030 can supply up to
51 * 100 mA ... but this value is board-specific, like
52 * "mode", and should be passed to usb_musb_init().
53 */
54 .power = 50, /* up to 100 mA */
55};
56
Yang Hongyange9304382009-04-13 14:40:14 -070057static u64 musb_dmamask = DMA_BIT_MASK(32);
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070058
Mike Rapoport9e186302011-04-27 11:56:12 +030059static struct omap_musb_board_data musb_default_board_data = {
60 .interface_type = MUSB_INTERFACE_ULPI,
61 .mode = MUSB_OTG,
62 .power = 100,
63};
64
65void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070066{
Hema HK18a26892011-02-17 12:07:21 +053067 struct omap_hwmod *oh;
Hema HK18a26892011-02-17 12:07:21 +053068 struct platform_device *pdev;
69 struct device *dev;
70 int bus_id = -1;
71 const char *oh_name, *name;
Mike Rapoport9e186302011-04-27 11:56:12 +030072 struct omap_musb_board_data *board_data;
73
74 if (musb_board_data)
75 board_data = musb_board_data;
76 else
77 board_data = &musb_default_board_data;
Anand Gadiyar2aae4222011-02-16 15:42:15 +053078
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070079 /*
80 * REVISIT: This line can be removed once all the platforms using
81 * musb_core.c have been converted to use use clkdev.
82 */
83 musb_plat.clock = "ick";
Maulik Mankad884b8362010-02-17 14:09:30 -080084 musb_plat.board_data = board_data;
85 musb_plat.power = board_data->power >> 1;
86 musb_plat.mode = board_data->mode;
Ajay Kumar Gupta58815fa2010-03-25 13:25:27 +020087 musb_plat.extvbus = board_data->extvbus;
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070088
Kevin Hilman68a88b92012-04-30 16:37:10 -070089 if (soc_is_am35xx()) {
Hema HK18a26892011-02-17 12:07:21 +053090 oh_name = "am35x_otg_hs";
91 name = "musb-am35x";
Ravi Babucada6912011-12-13 10:50:58 -080092 } else if (cpu_is_ti81xx()) {
93 oh_name = "usb_otg_hs";
94 name = "musb-ti81xx";
Hema HK18a26892011-02-17 12:07:21 +053095 } else {
96 oh_name = "usb_otg_hs";
97 name = "musb-omap2430";
98 }
99
Tony Lindgrenc541c152011-10-04 09:47:06 -0700100 oh = omap_hwmod_lookup(oh_name);
101 if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
102 __func__, oh_name))
103 return;
Hema HK18a26892011-02-17 12:07:21 +0530104
Tony Lindgrenc541c152011-10-04 09:47:06 -0700105 pdev = omap_device_build(name, bus_id, oh, &musb_plat,
Benoit Coussonf718e2c2011-08-10 15:30:09 +0200106 sizeof(musb_plat), NULL, 0, false);
Tony Lindgrenc541c152011-10-04 09:47:06 -0700107 if (IS_ERR(pdev)) {
Hema HK18a26892011-02-17 12:07:21 +0530108 pr_err("Could not build omap_device for %s %s\n",
109 name, oh_name);
110 return;
111 }
112
Hema HK18a26892011-02-17 12:07:21 +0530113 dev = &pdev->dev;
114 get_device(dev);
115 dev->dma_mask = &musb_dmamask;
116 dev->coherent_dma_mask = musb_dmamask;
117 put_device(dev);
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700118}