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>

#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_cfg_reg(Y9_3430_USB1HS_PHY_STP);
		omap_cfg_reg(Y8_3430_USB1HS_PHY_CLK);
		omap_cfg_reg(AA14_3430_USB1HS_PHY_DIR);
		omap_cfg_reg(AA11_3430_USB1HS_PHY_NXT);
		omap_cfg_reg(W13_3430_USB1HS_PHY_DATA0);
		omap_cfg_reg(W12_3430_USB1HS_PHY_DATA1);
		omap_cfg_reg(W11_3430_USB1HS_PHY_DATA2);
		omap_cfg_reg(Y11_3430_USB1HS_PHY_DATA3);
		omap_cfg_reg(W9_3430_USB1HS_PHY_DATA4);
		omap_cfg_reg(Y12_3430_USB1HS_PHY_DATA5);
		omap_cfg_reg(W8_3430_USB1HS_PHY_DATA6);
		omap_cfg_reg(Y13_3430_USB1HS_PHY_DATA7);
		break;
	case EHCI_HCD_OMAP_MODE_TLL:
		omap_cfg_reg(Y9_3430_USB1HS_TLL_STP);
		omap_cfg_reg(Y8_3430_USB1HS_TLL_CLK);
		omap_cfg_reg(AA14_3430_USB1HS_TLL_DIR);
		omap_cfg_reg(AA11_3430_USB1HS_TLL_NXT);
		omap_cfg_reg(W13_3430_USB1HS_TLL_DATA0);
		omap_cfg_reg(W12_3430_USB1HS_TLL_DATA1);
		omap_cfg_reg(W11_3430_USB1HS_TLL_DATA2);
		omap_cfg_reg(Y11_3430_USB1HS_TLL_DATA3);
		omap_cfg_reg(W9_3430_USB1HS_TLL_DATA4);
		omap_cfg_reg(Y12_3430_USB1HS_TLL_DATA5);
		omap_cfg_reg(W8_3430_USB1HS_TLL_DATA6);
		omap_cfg_reg(Y13_3430_USB1HS_TLL_DATA7);
		break;
	case EHCI_HCD_OMAP_MODE_UNKNOWN:
		/* FALLTHROUGH */
	default:
		break;
	}

	switch (port_mode[1]) {
	case EHCI_HCD_OMAP_MODE_PHY:
		omap_cfg_reg(AA10_3430_USB2HS_PHY_STP);
		omap_cfg_reg(AA8_3430_USB2HS_PHY_CLK);
		omap_cfg_reg(AA9_3430_USB2HS_PHY_DIR);
		omap_cfg_reg(AB11_3430_USB2HS_PHY_NXT);
		omap_cfg_reg(AB10_3430_USB2HS_PHY_DATA0);
		omap_cfg_reg(AB9_3430_USB2HS_PHY_DATA1);
		omap_cfg_reg(W3_3430_USB2HS_PHY_DATA2);
		omap_cfg_reg(T4_3430_USB2HS_PHY_DATA3);
		omap_cfg_reg(T3_3430_USB2HS_PHY_DATA4);
		omap_cfg_reg(R3_3430_USB2HS_PHY_DATA5);
		omap_cfg_reg(R4_3430_USB2HS_PHY_DATA6);
		omap_cfg_reg(T2_3430_USB2HS_PHY_DATA7);
		break;
	case EHCI_HCD_OMAP_MODE_TLL:
		omap_cfg_reg(AA10_3430_USB2HS_TLL_STP);
		omap_cfg_reg(AA8_3430_USB2HS_TLL_CLK);
		omap_cfg_reg(AA9_3430_USB2HS_TLL_DIR);
		omap_cfg_reg(AB11_3430_USB2HS_TLL_NXT);
		omap_cfg_reg(AB10_3430_USB2HS_TLL_DATA0);
		omap_cfg_reg(AB9_3430_USB2HS_TLL_DATA1);
		omap_cfg_reg(W3_3430_USB2HS_TLL_DATA2);
		omap_cfg_reg(T4_3430_USB2HS_TLL_DATA3);
		omap_cfg_reg(T3_3430_USB2HS_TLL_DATA4);
		omap_cfg_reg(R3_3430_USB2HS_TLL_DATA5);
		omap_cfg_reg(R4_3430_USB2HS_TLL_DATA6);
		omap_cfg_reg(T2_3430_USB2HS_TLL_DATA7);
		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_cfg_reg(AB3_3430_USB3HS_TLL_STP);
		omap_cfg_reg(AA6_3430_USB3HS_TLL_CLK);
		omap_cfg_reg(AA3_3430_USB3HS_TLL_DIR);
		omap_cfg_reg(Y3_3430_USB3HS_TLL_NXT);
		omap_cfg_reg(AA5_3430_USB3HS_TLL_DATA0);
		omap_cfg_reg(Y4_3430_USB3HS_TLL_DATA1);
		omap_cfg_reg(Y5_3430_USB3HS_TLL_DATA2);
		omap_cfg_reg(W5_3430_USB3HS_TLL_DATA3);
		omap_cfg_reg(AB12_3430_USB3HS_TLL_DATA4);
		omap_cfg_reg(AB13_3430_USB3HS_TLL_DATA5);
		omap_cfg_reg(AA13_3430_USB3HS_TLL_DATA6);
		omap_cfg_reg(AA12_3430_USB3HS_TLL_DATA7);
		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 */