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