cada691f86
Added musb support for ti81xx platform which has two instances of musb interface and uses CPPI4.1 DMA. The current patch set adds support for single instance and in PIO mode only. Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com> Signed-off-by: Ravi Babu <ravibabu@ti.com> Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
125 lines
3.1 KiB
C
125 lines
3.1 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_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 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 if (cpu_is_ti81xx()) {
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oh_name = "usb_otg_hs";
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name = "musb-ti81xx";
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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 (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
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__func__, oh_name))
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return;
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pdev = omap_device_build(name, bus_id, oh, &musb_plat,
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sizeof(musb_plat), NULL, 0, false);
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if (IS_ERR(pdev)) {
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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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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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