[deliverable/linux.git] / arch / arm / mach-omap2 / usb-musb.c

/*
 * 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 <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/am35xx.h>
#include <plat/usb.h>
#include <plat/omap_device.h>
#include "mux.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 = {
#ifdef CONFIG_USB_MUSB_OTG
	.mode		= MUSB_OTG,
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
	.mode		= MUSB_HOST,
#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
	.mode		= MUSB_PERIPHERAL,
#endif
	/* .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_device_pm_latency omap_musb_latency[] = {
	{
		.deactivate_func	= omap_device_idle_hwmods,
		.activate_func		= omap_device_enable_hwmods,
		.flags			= OMAP_DEVICE_LATENCY_AUTO_ADJUST,
	},
};

static void usb_musb_mux_init(struct omap_musb_board_data *board_data)
{
	switch (board_data->interface_type) {
	case MUSB_INTERFACE_UTMI:
		omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT);
		omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT);
		break;
	case MUSB_INTERFACE_ULPI:
		omap_mux_init_signal("usba0_ulpiphy_clk",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_stp",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dir",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_nxt",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat0",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat1",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat2",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat3",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat4",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat5",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat6",
						OMAP_PIN_INPUT_PULLDOWN);
		omap_mux_init_signal("usba0_ulpiphy_dat7",
						OMAP_PIN_INPUT_PULLDOWN);
		break;
	default:
		break;
	}
}

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 omap_device		*od;
	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 (cpu_is_omap3517() || cpu_is_omap3505()) {
		oh_name = "am35x_otg_hs";
		name = "musb-am35x";
	} else {
		oh_name = "usb_otg_hs";
		name = "musb-omap2430";
	}

	oh = omap_hwmod_lookup(oh_name);
	if (!oh) {
		pr_err("Could not look up %s\n", oh_name);
		return;
	}

	od = omap_device_build(name, bus_id, oh, &musb_plat,
			       sizeof(musb_plat), omap_musb_latency,
			       ARRAY_SIZE(omap_musb_latency), false);
	if (IS_ERR(od)) {
		pr_err("Could not build omap_device for %s %s\n",
						name, oh_name);
		return;
	}

	pdev = &od->pdev;
	dev = &pdev->dev;
	get_device(dev);
	dev->dma_mask = &musb_dmamask;
	dev->coherent_dma_mask = musb_dmamask;
	put_device(dev);

	if (cpu_is_omap44xx())
		omap4430_phy_init(dev);
}
Commit	Line	Data
18cb7aca FB	1	/*
	2	* linux/arch/arm/mach-omap2/usb-musb.c
	3	*
	4	* This file will contain the board specific details for the
	5	* MENTOR USB OTG controller on OMAP3430
	6	*
	7	* Copyright (C) 2007-2008 Texas Instruments
	8	* Copyright (C) 2008 Nokia Corporation
	9	* Author: Vikram Pandita
	10	*
	11	* Generalization by:
	12	* Felipe Balbi <felipe.balbi@nokia.com>
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License version 2 as
	16	* published by the Free Software Foundation.
	17	*/
	18
	19	#include <linux/types.h>
	20	#include <linux/errno.h>
	21	#include <linux/delay.h>
	22	#include <linux/platform_device.h>
	23	#include <linux/clk.h>
	24	#include <linux/dma-mapping.h>
	25	#include <linux/io.h>
	26
	27	#include <linux/usb/musb.h>
	28
	29	#include <mach/hardware.h>
	30	#include <mach/irqs.h>
3a0d30bc	31	#include <mach/am35xx.h>
ce491cf8	32	#include <plat/usb.h>
18a26892	33	#include <plat/omap_device.h>
2aae4221	34	#include "mux.h"
18cb7aca	35
18cb7aca FB	36	static struct musb_hdrc_config musb_config = {
	37	.multipoint = 1,
	38	.dyn_fifo = 1,
18cb7aca	39	.num_eps = 16,
18cb7aca	40	.ram_bits = 12,
18cb7aca FB	41	};
	42
	43	static struct musb_hdrc_platform_data musb_plat = {
	44	#ifdef CONFIG_USB_MUSB_OTG
	45	.mode = MUSB_OTG,
	46	#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
	47	.mode = MUSB_HOST,
	48	#elif defined(CONFIG_USB_GADGET_MUSB_HDRC)
	49	.mode = MUSB_PERIPHERAL,
	50	#endif
	51	/* .clock is set dynamically */
18cb7aca FB	52	.config = &musb_config,
	53
	54	/* REVISIT charge pump on TWL4030 can supply up to
	55	* 100 mA ... but this value is board-specific, like
	56	* "mode", and should be passed to usb_musb_init().
	57	*/
	58	.power = 50, /* up to 100 mA */
	59	};
	60
e930438c	61	static u64 musb_dmamask = DMA_BIT_MASK(32);
18cb7aca	62
18a26892 HH	63	static struct omap_device_pm_latency omap_musb_latency[] = {
	64	{
	65	.deactivate_func = omap_device_idle_hwmods,
	66	.activate_func = omap_device_enable_hwmods,
	67	.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
18cb7aca	68	},
18cb7aca FB	69	};
18cb7aca FB	70
2aae4221 AG	71	static void usb_musb_mux_init(struct omap_musb_board_data *board_data)
	72	{
	73	switch (board_data->interface_type) {
	74	case MUSB_INTERFACE_UTMI:
	75	omap_mux_init_signal("usba0_otg_dp", OMAP_PIN_INPUT);
	76	omap_mux_init_signal("usba0_otg_dm", OMAP_PIN_INPUT);
	77	break;
	78	case MUSB_INTERFACE_ULPI:
	79	omap_mux_init_signal("usba0_ulpiphy_clk",
	80	OMAP_PIN_INPUT_PULLDOWN);
	81	omap_mux_init_signal("usba0_ulpiphy_stp",
	82	OMAP_PIN_INPUT_PULLDOWN);
	83	omap_mux_init_signal("usba0_ulpiphy_dir",
	84	OMAP_PIN_INPUT_PULLDOWN);
	85	omap_mux_init_signal("usba0_ulpiphy_nxt",
	86	OMAP_PIN_INPUT_PULLDOWN);
	87	omap_mux_init_signal("usba0_ulpiphy_dat0",
	88	OMAP_PIN_INPUT_PULLDOWN);
	89	omap_mux_init_signal("usba0_ulpiphy_dat1",
	90	OMAP_PIN_INPUT_PULLDOWN);
	91	omap_mux_init_signal("usba0_ulpiphy_dat2",
	92	OMAP_PIN_INPUT_PULLDOWN);
	93	omap_mux_init_signal("usba0_ulpiphy_dat3",
	94	OMAP_PIN_INPUT_PULLDOWN);
	95	omap_mux_init_signal("usba0_ulpiphy_dat4",
	96	OMAP_PIN_INPUT_PULLDOWN);
	97	omap_mux_init_signal("usba0_ulpiphy_dat5",
	98	OMAP_PIN_INPUT_PULLDOWN);
	99	omap_mux_init_signal("usba0_ulpiphy_dat6",
	100	OMAP_PIN_INPUT_PULLDOWN);
	101	omap_mux_init_signal("usba0_ulpiphy_dat7",
	102	OMAP_PIN_INPUT_PULLDOWN);
	103	break;
	104	default:
	105	break;
	106	}
	107	}
18a26892	108
9e18630b MR	109	static struct omap_musb_board_data musb_default_board_data = {
	110	.interface_type = MUSB_INTERFACE_ULPI,
	111	.mode = MUSB_OTG,
	112	.power = 100,
	113	};
	114
	115	void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
18cb7aca	116	{
18a26892 HH	117	struct omap_hwmod *oh;
	118	struct omap_device *od;
	119	struct platform_device *pdev;
	120	struct device *dev;
	121	int bus_id = -1;
	122	const char oh_name, name;
9e18630b MR	123	struct omap_musb_board_data *board_data;
	124
	125	if (musb_board_data)
	126	board_data = musb_board_data;
	127	else
	128	board_data = &musb_default_board_data;
2aae4221	129
18cb7aca FB	130	/*
	131	* REVISIT: This line can be removed once all the platforms using
	132	* musb_core.c have been converted to use use clkdev.
	133	*/
	134	musb_plat.clock = "ick";
884b8369 MM	135	musb_plat.board_data = board_data;
	136	musb_plat.power = board_data->power >> 1;
	137	musb_plat.mode = board_data->mode;
58815fa3	138	musb_plat.extvbus = board_data->extvbus;
18cb7aca	139
18a26892 HH	140	if (cpu_is_omap3517() \|\| cpu_is_omap3505()) {
	141	oh_name = "am35x_otg_hs";
	142	name = "musb-am35x";
	143	} else {
	144	oh_name = "usb_otg_hs";
	145	name = "musb-omap2430";
	146	}
	147
	148	oh = omap_hwmod_lookup(oh_name);
	149	if (!oh) {
	150	pr_err("Could not look up %s\n", oh_name);
	151	return;
	152	}
	153
	154	od = omap_device_build(name, bus_id, oh, &musb_plat,
	155	sizeof(musb_plat), omap_musb_latency,
	156	ARRAY_SIZE(omap_musb_latency), false);
	157	if (IS_ERR(od)) {
	158	pr_err("Could not build omap_device for %s %s\n",
	159	name, oh_name);
	160	return;
	161	}
	162
	163	pdev = &od->pdev;
	164	dev = &pdev->dev;
	165	get_device(dev);
	166	dev->dma_mask = &musb_dmamask;
	167	dev->coherent_dma_mask = musb_dmamask;
	168	put_device(dev);
1f158488 HH	169
	170	if (cpu_is_omap44xx())
	171	omap4430_phy_init(dev);
94a3ef6f	172	}