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/*
* linux/arch/arm/mach-omap2/usb-musb.c
*
* This file will contain the board specific details for the
* MENTOR USB OTG controller on OMAP3430
*
* Copyright (C) 2007-2008 Texas Instruments
* Copyright (C) 2008 Nokia Corporation
* Author: Vikram Pandita
*
* Generalization by:
* Felipe Balbi <felipe.balbi@nokia.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/usb/musb.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/am35xx.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
#include "mux.h"
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.num_eps = 16,
.ram_bits = 12,
};
static struct musb_hdrc_platform_data musb_plat = {
#ifdef CONFIG_USB_MUSB_OTG
.mode = MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
.mode = MUSB_HOST,
#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
.mode = MUSB_PERIPHERAL,
#endif
/* .clock is set dynamically */
.config = &musb_config,
/* REVISIT charge pump on TWL4030 can supply up to
* 100 mA ... but this value is board-specific, like
* "mode", and should be passed to usb_musb_init().
*/
.power = 50, /* up to 100 mA */
};
static u64 musb_dmamask = DMA_BIT_MASK(32);
static struct omap_device_pm_latency omap_musb_latency[] = {
{
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
static void usb_musb_mux_init(struct omap_musb_board_data *board_data)
{
switch (board_data->interface_type) {
case MUSB_INTERFACE_UTMI:
omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT);
omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT);
break;
case MUSB_INTERFACE_ULPI:
omap_mux_init_signal("usba0_ulpiphy_clk",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_stp",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dir",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_nxt",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat0",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat1",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat2",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat3",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat4",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat5",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat6",
OMAP_PIN_INPUT_PULLDOWN);
omap_mux_init_signal("usba0_ulpiphy_dat7",
OMAP_PIN_INPUT_PULLDOWN);
break;
default:
break;
}
}
static struct omap_musb_board_data musb_default_board_data = {
.interface_type = MUSB_INTERFACE_ULPI,
.mode = MUSB_OTG,
.power = 100,
};
void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
{
struct omap_hwmod *oh;
struct platform_device *pdev;
struct device *dev;
int bus_id = -1;
const char *oh_name, *name;
struct omap_musb_board_data *board_data;
if (musb_board_data)
board_data = musb_board_data;
else
board_data = &musb_default_board_data;
/*
* REVISIT: This line can be removed once all the platforms using
* musb_core.c have been converted to use use clkdev.
*/
musb_plat.clock = "ick";
musb_plat.board_data = board_data;
musb_plat.power = board_data->power >> 1;
musb_plat.mode = board_data->mode;
musb_plat.extvbus = board_data->extvbus;
if (cpu_is_omap3517() || cpu_is_omap3505()) {
oh_name = "am35x_otg_hs";
name = "musb-am35x";
} else {
oh_name = "usb_otg_hs";
name = "musb-omap2430";
}
oh = omap_hwmod_lookup(oh_name);
if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
__func__, oh_name))
return;
pdev = omap_device_build(name, bus_id, oh, &musb_plat,
sizeof(musb_plat), omap_musb_latency,
ARRAY_SIZE(omap_musb_latency), false);
if (IS_ERR(pdev)) {
pr_err("Could not build omap_device for %s %s\n",
name, oh_name);
return;
}
dev = &pdev->dev;
get_device(dev);
dev->dma_mask = &musb_dmamask;
dev->coherent_dma_mask = musb_dmamask;
put_device(dev);
if (cpu_is_omap44xx())
omap4430_phy_init(dev);
}
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