/*
* 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/mux.h>
#include <mach/usb.h>
#define OTG_SYSCONFIG (OMAP34XX_HSUSB_OTG_BASE + 0x404)
static void __init usb_musb_pm_init(void)
{
/* Ensure force-idle mode for OTG controller */
if (cpu_is_omap34xx())
omap_writel(0, OTG_SYSCONFIG);
}
#ifdef CONFIG_USB_MUSB_SOC
static struct resource musb_resources[] = {
[0] = { /* start and end set dynamically */
.flags = IORESOURCE_MEM,
},
[1] = { /* general IRQ */
.start = INT_243X_HS_USB_MC,
.flags = IORESOURCE_IRQ,
},
[2] = { /* DMA IRQ */
.start = INT_243X_HS_USB_DMA,
.flags = IORESOURCE_IRQ,
},
};
static int clk_on;
static int musb_set_clock(struct clk *clk, int state)
{
if (state) {
if (clk_on > 0)
return -ENODEV;
clk_enable(clk);
clk_on = 1;
} else {
if (clk_on == 0)
return -ENODEV;
clk_disable(clk);
clk_on = 0;
}
return 0;
}
static struct musb_hdrc_eps_bits musb_eps[] = {
{ "ep1_tx", 10, },
{ "ep1_rx", 10, },
{ "ep2_tx", 9, },
{ "ep2_rx", 9, },
{ "ep3_tx", 3, },
{ "ep3_rx", 3, },
{ "ep4_tx", 3, },
{ "ep4_rx", 3, },
{ "ep5_tx", 3, },
{ "ep5_rx", 3, },
{ "ep6_tx", 3, },
{ "ep6_rx", 3, },
{ "ep7_tx", 3, },
{ "ep7_rx", 3, },
{ "ep8_tx", 2, },
{ "ep8_rx", 2, },
{ "ep9_tx", 2, },
{ "ep9_rx", 2, },
{ "ep10_tx", 2, },
{ "ep10_rx", 2, },
{ "ep11_tx", 2, },
{ "ep11_rx", 2, },
{ "ep12_tx", 2, },
{ "ep12_rx", 2, },
{ "ep13_tx", 2, },
{ "ep13_rx", 2, },
{ "ep14_tx", 2, },
{ "ep14_rx", 2, },
{ "ep15_tx", 2, },
{ "ep15_rx", 2, },
};
static struct musb_hdrc_config musb_config = {
.multipoint = 1,
.dyn_fifo = 1,
.soft_con = 1,
.dma = 1,
.num_eps = 16,
.dma_channels = 7,
.dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
.ram_bits = 12,
.eps_bits = musb_eps,
};
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 */
.set_clock = musb_set_clock,
.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 platform_device musb_device = {
.name = "musb_hdrc",
.id = -1,
.dev = {
.dma_mask = &musb_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &musb_plat,
},
.num_resources = ARRAY_SIZE(musb_resources),
.resource = musb_resources,
};
#ifdef CONFIG_NOP_USB_XCEIV
static u64 nop_xceiv_dmamask = DMA_BIT_MASK(32);
static struct platform_device nop_xceiv_device = {
.name = "nop_usb_xceiv",
.id = -1,
.dev = {
.dma_mask = &nop_xceiv_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = NULL,
},
};
#endif
void __init usb_musb_init(void)
{
if (cpu_is_omap243x())
musb_resources[0].start = OMAP243X_HS_BASE;
else
musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE;
musb_resources[0].end = musb_resources[0].start + SZ_8K - 1;
/*
* 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";
#ifdef CONFIG_NOP_USB_XCEIV
if (platform_device_register(&nop_xceiv_device) < 0) {
printk(KERN_ERR "Unable to register NOP-XCEIV device\n");
return;
}
#endif
if (platform_device_register(&musb_device) < 0) {
printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n");
return;
}
usb_musb_pm_init();
}
#else
void __init usb_musb_init(void)
{
usb_musb_pm_init();
}
#endif /* CONFIG_USB_MUSB_SOC */
