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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>
Ajay Kumar Gupta3a0d30b2010-10-19 10:08:11 +030031#include <mach/am35xx.h>
Tony Lindgrence491cf2009-10-20 09:40:47 -070032#include <plat/usb.h>
Hema HK18a26892011-02-17 12:07:21 +053033#include <plat/omap_device.h>
Anand Gadiyar2aae4222011-02-16 15:42:15 +053034#include "mux.h"
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070035
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070036static struct musb_hdrc_config musb_config = {
37 .multipoint = 1,
38 .dyn_fifo = 1,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070039 .num_eps = 16,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070040 .ram_bits = 12,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070041};
42
43static struct musb_hdrc_platform_data musb_plat = {
Tony Lindgren310018d2012-06-20 07:18:15 -070044#ifdef CONFIG_USB_GADGET_MUSB_HDRC
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070045 .mode = MUSB_OTG,
Tony Lindgren310018d2012-06-20 07:18:15 -070046#else
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070047 .mode = MUSB_HOST,
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070048#endif
49 /* .clock is set dynamically */
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070050 .config = &musb_config,
51
52 /* REVISIT charge pump on TWL4030 can supply up to
53 * 100 mA ... but this value is board-specific, like
54 * "mode", and should be passed to usb_musb_init().
55 */
56 .power = 50, /* up to 100 mA */
57};
58
Yang Hongyange9304382009-04-13 14:40:14 -070059static u64 musb_dmamask = DMA_BIT_MASK(32);
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070060
Mike Rapoport9e186302011-04-27 11:56:12 +030061static struct omap_musb_board_data musb_default_board_data = {
62 .interface_type = MUSB_INTERFACE_ULPI,
63 .mode = MUSB_OTG,
64 .power = 100,
65};
66
67void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070068{
Hema HK18a26892011-02-17 12:07:21 +053069 struct omap_hwmod *oh;
Hema HK18a26892011-02-17 12:07:21 +053070 struct platform_device *pdev;
71 struct device *dev;
72 int bus_id = -1;
73 const char *oh_name, *name;
Mike Rapoport9e186302011-04-27 11:56:12 +030074 struct omap_musb_board_data *board_data;
75
76 if (musb_board_data)
77 board_data = musb_board_data;
78 else
79 board_data = &musb_default_board_data;
Anand Gadiyar2aae4222011-02-16 15:42:15 +053080
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070081 /*
82 * REVISIT: This line can be removed once all the platforms using
83 * musb_core.c have been converted to use use clkdev.
84 */
85 musb_plat.clock = "ick";
Maulik Mankad884b83692010-02-17 14:09:30 -080086 musb_plat.board_data = board_data;
87 musb_plat.power = board_data->power >> 1;
88 musb_plat.mode = board_data->mode;
Ajay Kumar Gupta58815fa2010-03-25 13:25:27 +020089 musb_plat.extvbus = board_data->extvbus;
Felipe Balbi18cb7ac2009-03-23 18:34:06 -070090
Kevin Hilman68a88b92012-04-30 16:37:10 -070091 if (soc_is_am35xx()) {
Hema HK18a26892011-02-17 12:07:21 +053092 oh_name = "am35x_otg_hs";
93 name = "musb-am35x";
Ravi Babucada6912011-12-13 10:50:58 -080094 } else if (cpu_is_ti81xx()) {
95 oh_name = "usb_otg_hs";
96 name = "musb-ti81xx";
Hema HK18a26892011-02-17 12:07:21 +053097 } else {
98 oh_name = "usb_otg_hs";
99 name = "musb-omap2430";
100 }
101
Tony Lindgrenc541c152011-10-04 09:47:06 -0700102 oh = omap_hwmod_lookup(oh_name);
103 if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
104 __func__, oh_name))
105 return;
Hema HK18a26892011-02-17 12:07:21 +0530106
Tony Lindgrenc541c152011-10-04 09:47:06 -0700107 pdev = omap_device_build(name, bus_id, oh, &musb_plat,
Benoit Coussonf718e2c2011-08-10 15:30:09 +0200108 sizeof(musb_plat), NULL, 0, false);
Tony Lindgrenc541c152011-10-04 09:47:06 -0700109 if (IS_ERR(pdev)) {
Hema HK18a26892011-02-17 12:07:21 +0530110 pr_err("Could not build omap_device for %s %s\n",
111 name, oh_name);
112 return;
113 }
114
Hema HK18a26892011-02-17 12:07:21 +0530115 dev = &pdev->dev;
116 get_device(dev);
117 dev->dma_mask = &musb_dmamask;
118 dev->coherent_dma_mask = musb_dmamask;
119 put_device(dev);
Hema HK1f158482011-02-28 14:19:35 +0530120
121 if (cpu_is_omap44xx())
122 omap4430_phy_init(dev);
Felipe Balbi18cb7ac2009-03-23 18:34:06 -0700123}