usb-musb.rar_The Mentor_mentor usb

/* * 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 "omap_device.h" #include "soc.h" #include "mux.h" #include "usb.h" static struct musb_hdrc_config musb_config = { .multipoint = 1, .dyn_fifo = 1, .num_eps = 16, .ram_bits = 12, }; static struct musb_hdrc_platform_data musb_plat = { .mode = MUSB_OTG, /* .clock is set dynamically */ .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 omap_musb_board_data musb_default_board_data = { .interface_type = MUSB_INTERFACE_ULPI, .mode = MUSB_OTG, .power = 100, }; void __init usb_musb_init(struct omap_musb_board_data *musb_board_data) { struct omap_hwmod *oh; struct platform_device *pdev; struct device *dev; int bus_id = -1; const char *oh_name, *name; struct omap_musb_board_data *board_data; if (musb_board_data) board_data = musb_board_data; else board_data = &musb_default_board_data; /* * 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"; musb_plat.board_data = board_data; musb_plat.power = board_data->power >> 1; musb_plat.mode = board_data->mode; musb_plat.extvbus = board_data->extvbus; if (soc_is_am35xx()) { oh_name = "am35x_otg_hs"; name = "musb-am35x"; } else if (cpu_is_ti81xx()) { oh_name = "usb_otg_hs"; name = "musb-ti81xx"; } else { oh_name = "usb_otg_hs"; name = "musb-omap2430"; } oh = omap_hwmod_lookup(oh_name); if (WARN(!oh, "%s: could not find omap_hwmod for %s\n", __func__, oh_name)) return; pdev = omap_device_build(name, bus_id, oh, &musb_plat, sizeof(musb_plat)); if (IS_ERR(pdev)) { pr_err("Could not build omap_device for %s %s\n", name, oh_name); return; } dev = &pdev->dev; get_device(dev); dev->dma_mask = &musb_dmamask; dev->coherent_dma_mask = musb_dmamask; put_device(dev); }