usb-ehci.c

/*
 * linux/arch/arm/mach-omap2/usb-ehci.c
 *
 * This file will contain the board specific details for the
 * Synopsys EHCI host controller on OMAP3430
 *
 * Copyright (C) 2007 Texas Instruments
 * Author: Vikram Pandita <vikram.pandita@ti.com>
 *
 * 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 <asm/io.h>
#include <plat/mux.h>

#include <mach/hardware.h>
#include <mach/irqs.h>
#include <plat/usb.h>

#include "mux.h"

#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)

static struct resource ehci_resources[] = {
	{
		.start	= OMAP34XX_EHCI_BASE,
		.end	= OMAP34XX_EHCI_BASE + SZ_1K - 1,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= OMAP34XX_UHH_CONFIG_BASE,
		.end	= OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= OMAP34XX_USBTLL_BASE,
		.end	= OMAP34XX_USBTLL_BASE + SZ_4K - 1,
		.flags	= IORESOURCE_MEM,
	},
	{         /* general IRQ */
		.start   = INT_34XX_EHCI_IRQ,
		.flags   = IORESOURCE_IRQ,
	}
};

static u64 ehci_dmamask = ~(u32)0;
static struct platform_device ehci_device = {
	.name           = "ehci-omap",
	.id             = 0,
	.dev = {
		.dma_mask               = &ehci_dmamask,
		.coherent_dma_mask      = 0xffffffff,
		.platform_data          = NULL,
	},
	.num_resources  = ARRAY_SIZE(ehci_resources),
	.resource       = ehci_resources,
};

/* MUX settings for EHCI pins */
/*
 * setup_ehci_io_mux - initialize IO pad mux for USBHOST
 */
static void setup_ehci_io_mux(enum ehci_hcd_omap_mode *port_mode)
{
	switch (port_mode[0]) {
	case EHCI_HCD_OMAP_MODE_PHY:
		omap_mux_init_signal("hsusb1_stp", OMAP_PIN_OUTPUT);
		omap_mux_init_signal("hsusb1_clk", OMAP_PIN_OUTPUT);
		omap_mux_init_signal("hsusb1_dir", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_nxt", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data0", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data1", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data2", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data3", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data4", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data5", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data6", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_data7", OMAP_PIN_INPUT_PULLDOWN);
		break;
	case EHCI_HCD_OMAP_MODE_TLL:
		omap_mux_init_signal("hsusb1_tll_stp",
			OMAP_PIN_INPUT_PULLUP);
		omap_mux_init_signal("hsusb1_tll_clk",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_dir",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_nxt",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data0",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data1",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data2",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data3",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data4",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data5",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data6",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb1_tll_data7",
			OMAP_PIN_INPUT_PULLDOWN);
		break;
	case EHCI_HCD_OMAP_MODE_UNKNOWN:
		/* FALLTHROUGH */
	default:
		break;
	}

	switch (port_mode[1]) {
	case EHCI_HCD_OMAP_MODE_PHY:
		omap_mux_init_signal("hsusb2_stp", OMAP_PIN_OUTPUT);
		omap_mux_init_signal("hsusb2_clk", OMAP_PIN_OUTPUT);
		omap_mux_init_signal("hsusb2_dir", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_nxt", OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data0",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data1",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data2",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data3",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data4",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data5",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data6",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_data7",
			OMAP_PIN_INPUT_PULLDOWN);
		break;
	case EHCI_HCD_OMAP_MODE_TLL:
		omap_mux_init_signal("hsusb2_tll_stp",
			OMAP_PIN_INPUT_PULLUP);
		omap_mux_init_signal("hsusb2_tll_clk",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_dir",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_nxt",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data0",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data1",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data2",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data3",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data4",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data5",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data6",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb2_tll_data7",
			OMAP_PIN_INPUT_PULLDOWN);
		break;
	case EHCI_HCD_OMAP_MODE_UNKNOWN:
		/* FALLTHROUGH */
	default:
		break;
	}

	switch (port_mode[2]) {
	case EHCI_HCD_OMAP_MODE_PHY:
		printk(KERN_WARNING "Port3 can't be used in PHY mode\n");
		break;
	case EHCI_HCD_OMAP_MODE_TLL:
		omap_mux_init_signal("hsusb3_tll_stp",
			OMAP_PIN_INPUT_PULLUP);
		omap_mux_init_signal("hsusb3_tll_clk",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_dir",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_nxt",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data0",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data1",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data2",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data3",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data4",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data5",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data6",
			OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("hsusb3_tll_data7",
			OMAP_PIN_INPUT_PULLDOWN);
		break;
	case EHCI_HCD_OMAP_MODE_UNKNOWN:
		/* FALLTHROUGH */
	default:
		break;
	}

	return;
}

void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata)
{
	platform_device_add_data(&ehci_device, pdata, sizeof(*pdata));

	/* Setup Pin IO MUX for EHCI */
	if (cpu_is_omap34xx())
		setup_ehci_io_mux(pdata->port_mode);

	if (platform_device_register(&ehci_device) < 0) {
		printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
		return;
	}
}

#else

void __init usb_ehci_init(struct ehci_hcd_omap_platform_data *pdata)

{
}

#endif /* CONFIG_USB_EHCI_HCD */