174 lines
3.7 KiB
C
174 lines
3.7 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/mux.h>
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#include <mach/usb.h>
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#ifdef CONFIG_USB_MUSB_SOC
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static struct resource musb_resources[] = {
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[0] = { /* start and end set dynamically */
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.flags = IORESOURCE_MEM,
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},
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[1] = { /* general IRQ */
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.start = INT_243X_HS_USB_MC,
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.flags = IORESOURCE_IRQ,
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},
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[2] = { /* DMA IRQ */
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.start = INT_243X_HS_USB_DMA,
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.flags = IORESOURCE_IRQ,
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},
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};
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static int clk_on;
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static int musb_set_clock(struct clk *clk, int state)
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{
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if (state) {
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if (clk_on > 0)
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return -ENODEV;
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clk_enable(clk);
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clk_on = 1;
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} else {
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if (clk_on == 0)
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return -ENODEV;
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clk_disable(clk);
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clk_on = 0;
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}
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return 0;
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}
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static struct musb_hdrc_eps_bits musb_eps[] = {
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{ "ep1_tx", 10, },
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{ "ep1_rx", 10, },
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{ "ep2_tx", 9, },
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{ "ep2_rx", 9, },
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{ "ep3_tx", 3, },
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{ "ep3_rx", 3, },
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{ "ep4_tx", 3, },
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{ "ep4_rx", 3, },
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{ "ep5_tx", 3, },
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{ "ep5_rx", 3, },
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{ "ep6_tx", 3, },
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{ "ep6_rx", 3, },
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{ "ep7_tx", 3, },
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{ "ep7_rx", 3, },
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{ "ep8_tx", 2, },
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{ "ep8_rx", 2, },
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{ "ep9_tx", 2, },
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{ "ep9_rx", 2, },
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{ "ep10_tx", 2, },
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{ "ep10_rx", 2, },
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{ "ep11_tx", 2, },
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{ "ep11_rx", 2, },
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{ "ep12_tx", 2, },
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{ "ep12_rx", 2, },
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{ "ep13_tx", 2, },
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{ "ep13_rx", 2, },
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{ "ep14_tx", 2, },
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{ "ep14_rx", 2, },
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{ "ep15_tx", 2, },
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{ "ep15_rx", 2, },
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};
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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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.soft_con = 1,
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.dma = 1,
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.num_eps = 16,
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.dma_channels = 7,
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.dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3),
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.ram_bits = 12,
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.eps_bits = musb_eps,
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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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.set_clock = musb_set_clock,
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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 platform_device musb_device = {
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.name = "musb_hdrc",
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.id = -1,
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.dev = {
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.dma_mask = &musb_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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.platform_data = &musb_plat,
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},
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.num_resources = ARRAY_SIZE(musb_resources),
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.resource = musb_resources,
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};
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void __init usb_musb_init(void)
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{
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if (cpu_is_omap243x())
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musb_resources[0].start = OMAP243X_HS_BASE;
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else
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musb_resources[0].start = OMAP34XX_HSUSB_OTG_BASE;
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musb_resources[0].end = musb_resources[0].start + SZ_8K - 1;
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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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if (platform_device_register(&musb_device) < 0) {
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printk(KERN_ERR "Unable to register HS-USB (MUSB) device\n");
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return;
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}
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}
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#else
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void __init usb_musb_init(void)
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{
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}
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#endif /* CONFIG_USB_MUSB_SOC */
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