[deliverable/linux.git] / arch / arm / mach-omap2 / usb-tusb6010.c

/*
 * linux/arch/arm/mach-omap2/usb-tusb6010.c
 *
 * Copyright (C) 2006 Nokia Corporation
 *
 * 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/gpio.h>

#include <linux/usb/musb.h>

#include <plat/gpmc.h>

#include "mux.h"

static u8		async_cs, sync_cs;
static unsigned		refclk_psec;


/* t2_ps, when quantized to fclk units, must happen no earlier than
 * the clock after after t1_NS.
 *
 * Return a possibly updated value of t2_ps, converted to nsec.
 */
static unsigned
next_clk(unsigned t1_NS, unsigned t2_ps, unsigned fclk_ps)
{
	unsigned	t1_ps = t1_NS * 1000;
	unsigned	t1_f, t2_f;

	if ((t1_ps + fclk_ps) < t2_ps)
		return t2_ps / 1000;

	t1_f = (t1_ps + fclk_ps - 1) / fclk_ps;
	t2_f = (t2_ps + fclk_ps - 1) / fclk_ps;

	if (t1_f >= t2_f)
		t2_f = t1_f + 1;

	return (t2_f * fclk_ps) / 1000;
}

/* NOTE:  timings are from tusb 6010 datasheet Rev 1.8, 12-Sept 2006 */

static int tusb_set_async_mode(unsigned sysclk_ps, unsigned fclk_ps)
{
	struct gpmc_timings	t;
	unsigned		t_acsnh_advnh = sysclk_ps + 3000;
	unsigned		tmp;

	memset(&t, 0, sizeof(t));

	/* CS_ON = t_acsnh_acsnl */
	t.cs_on = 8;
	/* ADV_ON = t_acsnh_advnh - t_advn */
	t.adv_on = next_clk(t.cs_on, t_acsnh_advnh - 7000, fclk_ps);

	/*
	 * READ ... from omap2420 TRM fig 12-13
	 */

	/* ADV_RD_OFF = t_acsnh_advnh */
	t.adv_rd_off = next_clk(t.adv_on, t_acsnh_advnh, fclk_ps);

	/* OE_ON = t_acsnh_advnh + t_advn_oen (then wait for nRDY) */
	t.oe_on = next_clk(t.adv_on, t_acsnh_advnh + 1000, fclk_ps);

	/* ACCESS = counters continue only after nRDY */
	tmp = t.oe_on * 1000 + 300;
	t.access = next_clk(t.oe_on, tmp, fclk_ps);

	/* OE_OFF = after data gets sampled */
	tmp = t.access * 1000;
	t.oe_off = next_clk(t.access, tmp, fclk_ps);

	t.cs_rd_off = t.oe_off;

	tmp = t.cs_rd_off * 1000 + 7000 /* t_acsn_rdy_z */;
	t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps);

	/*
	 * WRITE ... from omap2420 TRM fig 12-15
	 */

	/* ADV_WR_OFF = t_acsnh_advnh */
	t.adv_wr_off = t.adv_rd_off;

	/* WE_ON = t_acsnh_advnh + t_advn_wen (then wait for nRDY) */
	t.we_on = next_clk(t.adv_wr_off, t_acsnh_advnh + 1000, fclk_ps);

	/* WE_OFF = after data gets sampled */
	tmp = t.we_on * 1000 + 300;
	t.we_off = next_clk(t.we_on, tmp, fclk_ps);

	t.cs_wr_off = t.we_off;

	tmp = t.cs_wr_off * 1000 + 7000 /* t_acsn_rdy_z */;
	t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps);

	return gpmc_cs_set_timings(async_cs, &t);
}

static int tusb_set_sync_mode(unsigned sysclk_ps, unsigned fclk_ps)
{
	struct gpmc_timings	t;
	unsigned		t_scsnh_advnh = sysclk_ps + 3000;
	unsigned		tmp;

	memset(&t, 0, sizeof(t));
	t.cs_on = 8;

	/* ADV_ON = t_acsnh_advnh - t_advn */
	t.adv_on = next_clk(t.cs_on, t_scsnh_advnh - 7000, fclk_ps);

	/* GPMC_CLK rate = fclk rate / div */
	t.sync_clk = 11100 /* 11.1 nsec */;
	tmp = (t.sync_clk + fclk_ps - 1) / fclk_ps;
	if (tmp > 4)
		return -ERANGE;
	if (tmp <= 0)
		tmp = 1;
	t.page_burst_access = (fclk_ps * tmp) / 1000;

	/*
	 * READ ... based on omap2420 TRM fig 12-19, 12-20
	 */

	/* ADV_RD_OFF = t_scsnh_advnh */
	t.adv_rd_off = next_clk(t.adv_on, t_scsnh_advnh, fclk_ps);

	/* OE_ON = t_scsnh_advnh + t_advn_oen * fclk_ps (then wait for nRDY) */
	tmp = (t.adv_rd_off * 1000) + (3 * fclk_ps);
	t.oe_on = next_clk(t.adv_on, tmp, fclk_ps);

	/* ACCESS = number of clock cycles after t_adv_eon */
	tmp = (t.oe_on * 1000) + (5 * fclk_ps);
	t.access = next_clk(t.oe_on, tmp, fclk_ps);

	/* OE_OFF = after data gets sampled */
	tmp = (t.access * 1000) + (1 * fclk_ps);
	t.oe_off = next_clk(t.access, tmp, fclk_ps);

	t.cs_rd_off = t.oe_off;

	tmp = t.cs_rd_off * 1000 + 7000 /* t_scsn_rdy_z */;
	t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps);

	/*
	 * WRITE ... based on omap2420 TRM fig 12-21
	 */

	/* ADV_WR_OFF = t_scsnh_advnh */
	t.adv_wr_off = t.adv_rd_off;

	/* WE_ON = t_scsnh_advnh + t_advn_wen * fclk_ps (then wait for nRDY) */
	tmp = (t.adv_wr_off * 1000) + (3 * fclk_ps);
	t.we_on = next_clk(t.adv_wr_off, tmp, fclk_ps);

	/* WE_OFF = number of clock cycles after t_adv_wen */
	tmp = (t.we_on * 1000) + (6 * fclk_ps);
	t.we_off = next_clk(t.we_on, tmp, fclk_ps);

	t.cs_wr_off = t.we_off;

	tmp = t.cs_wr_off * 1000 + 7000 /* t_scsn_rdy_z */;
	t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps);

	return gpmc_cs_set_timings(sync_cs, &t);
}

extern unsigned long gpmc_get_fclk_period(void);

/* tusb driver calls this when it changes the chip's clocking */
int tusb6010_platform_retime(unsigned is_refclk)
{
	static const char	error[] =
		KERN_ERR "tusb6010 %s retime error %d\n";

	unsigned	fclk_ps = gpmc_get_fclk_period();
	unsigned	sysclk_ps;
	int		status;

	if (!refclk_psec || fclk_ps == 0)
		return -ENODEV;

	sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60;

	status = tusb_set_async_mode(sysclk_ps, fclk_ps);
	if (status < 0) {
		printk(error, "async", status);
		goto done;
	}
	status = tusb_set_sync_mode(sysclk_ps, fclk_ps);
	if (status < 0)
		printk(error, "sync", status);
done:
	return status;
}
EXPORT_SYMBOL_GPL(tusb6010_platform_retime);

static struct resource tusb_resources[] = {
	/* Order is significant!  The start/end fields
	 * are updated during setup..
	 */
	{ /* Asynchronous access */
		.flags	= IORESOURCE_MEM,
	},
	{ /* Synchronous access */
		.flags	= IORESOURCE_MEM,
	},
	{ /* IRQ */
		.name	= "mc",
		.flags	= IORESOURCE_IRQ,
	},
};

static u64 tusb_dmamask = ~(u32)0;

static struct platform_device tusb_device = {
	.name		= "musb-tusb",
	.id		= -1,
	.dev = {
		.dma_mask		= &tusb_dmamask,
		.coherent_dma_mask	= 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(tusb_resources),
	.resource	= tusb_resources,
};


/* this may be called only from board-*.c setup code */
int __init
tusb6010_setup_interface(struct musb_hdrc_platform_data *data,
		unsigned ps_refclk, unsigned waitpin,
		unsigned async, unsigned sync,
		unsigned irq, unsigned dmachan)
{
	int		status;
	static char	error[] __initdata =
		KERN_ERR "tusb6010 init error %d, %d\n";

	/* ASYNC region, primarily for PIO */
	status = gpmc_cs_request(async, SZ_16M, (unsigned long *)
				&tusb_resources[0].start);
	if (status < 0) {
		printk(error, 1, status);
		return status;
	}
	tusb_resources[0].end = tusb_resources[0].start + 0x9ff;
	async_cs = async;
	gpmc_cs_write_reg(async, GPMC_CS_CONFIG1,
			  GPMC_CONFIG1_PAGE_LEN(2)
			| GPMC_CONFIG1_WAIT_READ_MON
			| GPMC_CONFIG1_WAIT_WRITE_MON
			| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
			| GPMC_CONFIG1_READTYPE_ASYNC
			| GPMC_CONFIG1_WRITETYPE_ASYNC
			| GPMC_CONFIG1_DEVICESIZE_16
			| GPMC_CONFIG1_DEVICETYPE_NOR
			| GPMC_CONFIG1_MUXADDDATA);


	/* SYNC region, primarily for DMA */
	status = gpmc_cs_request(sync, SZ_16M, (unsigned long *)
				&tusb_resources[1].start);
	if (status < 0) {
		printk(error, 2, status);
		return status;
	}
	tusb_resources[1].end = tusb_resources[1].start + 0x9ff;
	sync_cs = sync;
	gpmc_cs_write_reg(sync, GPMC_CS_CONFIG1,
			  GPMC_CONFIG1_READMULTIPLE_SUPP
			| GPMC_CONFIG1_READTYPE_SYNC
			| GPMC_CONFIG1_WRITEMULTIPLE_SUPP
			| GPMC_CONFIG1_WRITETYPE_SYNC
			| GPMC_CONFIG1_CLKACTIVATIONTIME(1)
			| GPMC_CONFIG1_PAGE_LEN(2)
			| GPMC_CONFIG1_WAIT_READ_MON
			| GPMC_CONFIG1_WAIT_WRITE_MON
			| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
			| GPMC_CONFIG1_DEVICESIZE_16
			| GPMC_CONFIG1_DEVICETYPE_NOR
			| GPMC_CONFIG1_MUXADDDATA
			/* fclk divider gets set later */
			);

	/* IRQ */
	status = gpio_request(irq, "TUSB6010 irq");
	if (status < 0) {
		printk(error, 3, status);
		return status;
	}
	gpio_direction_input(irq);
	tusb_resources[2].start = irq + IH_GPIO_BASE;

	/* set up memory timings ... can speed them up later */
	if (!ps_refclk) {
		printk(error, 4, status);
		return -ENODEV;
	}
	refclk_psec = ps_refclk;
	status = tusb6010_platform_retime(1);
	if (status < 0) {
		printk(error, 5, status);
		return status;
	}

	/* finish device setup ... */
	if (!data) {
		printk(error, 6, status);
		return -ENODEV;
	}
	tusb_device.dev.platform_data = data;

	/* REVISIT let the driver know what DMA channels work */
	if (!dmachan)
		tusb_device.dev.dma_mask = NULL;
	else {
		/* assume OMAP 2420 ES2.0 and later */
		if (dmachan & (1 << 0))
			omap_mux_init_signal("sys_ndmareq0", 0);
		if (dmachan & (1 << 1))
			omap_mux_init_signal("sys_ndmareq1", 0);
		if (dmachan & (1 << 2))
			omap_mux_init_signal("sys_ndmareq2", 0);
		if (dmachan & (1 << 3))
			omap_mux_init_signal("sys_ndmareq3", 0);
		if (dmachan & (1 << 4))
			omap_mux_init_signal("sys_ndmareq4", 0);
		if (dmachan & (1 << 5))
			omap_mux_init_signal("sys_ndmareq5", 0);
	}

	/* so far so good ... register the device */
	status = platform_device_register(&tusb_device);
	if (status < 0) {
		printk(error, 7, status);
		return status;
	}
	return 0;
}
Commit	Line	Data
c1ed6407 DB	1	/*
	2	* linux/arch/arm/mach-omap2/usb-tusb6010.c
	3	*
	4	* Copyright (C) 2006 Nokia Corporation
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*/
	10
	11	#include <linux/types.h>
	12	#include <linux/errno.h>
	13	#include <linux/delay.h>
	14	#include <linux/platform_device.h>
f2d18fea	15	#include <linux/gpio.h>
c1ed6407 DB	16
	17	#include <linux/usb/musb.h>
	18
ce491cf8	19	#include <plat/gpmc.h>
c1ed6407	20
f99bf16d	21	#include "mux.h"
c1ed6407 DB	22
	23	static u8 async_cs, sync_cs;
	24	static unsigned refclk_psec;
	25
	26
	27	/* t2_ps, when quantized to fclk units, must happen no earlier than
	28	* the clock after after t1_NS.
	29	*
	30	* Return a possibly updated value of t2_ps, converted to nsec.
	31	*/
	32	static unsigned
	33	next_clk(unsigned t1_NS, unsigned t2_ps, unsigned fclk_ps)
	34	{
	35	unsigned t1_ps = t1_NS * 1000;
	36	unsigned t1_f, t2_f;
	37
	38	if ((t1_ps + fclk_ps) < t2_ps)
	39	return t2_ps / 1000;
	40
	41	t1_f = (t1_ps + fclk_ps - 1) / fclk_ps;
	42	t2_f = (t2_ps + fclk_ps - 1) / fclk_ps;
	43
	44	if (t1_f >= t2_f)
	45	t2_f = t1_f + 1;
	46
	47	return (t2_f * fclk_ps) / 1000;
	48	}
	49
	50	/* NOTE: timings are from tusb 6010 datasheet Rev 1.8, 12-Sept 2006 */
	51
	52	static int tusb_set_async_mode(unsigned sysclk_ps, unsigned fclk_ps)
	53	{
	54	struct gpmc_timings t;
	55	unsigned t_acsnh_advnh = sysclk_ps + 3000;
	56	unsigned tmp;
	57
	58	memset(&t, 0, sizeof(t));
	59
	60	/* CS_ON = t_acsnh_acsnl */
	61	t.cs_on = 8;
	62	/* ADV_ON = t_acsnh_advnh - t_advn */
	63	t.adv_on = next_clk(t.cs_on, t_acsnh_advnh - 7000, fclk_ps);
	64
	65	/*
	66	* READ ... from omap2420 TRM fig 12-13
	67	*/
	68
	69	/* ADV_RD_OFF = t_acsnh_advnh */
	70	t.adv_rd_off = next_clk(t.adv_on, t_acsnh_advnh, fclk_ps);
	71
	72	/* OE_ON = t_acsnh_advnh + t_advn_oen (then wait for nRDY) */
	73	t.oe_on = next_clk(t.adv_on, t_acsnh_advnh + 1000, fclk_ps);
	74
	75	/* ACCESS = counters continue only after nRDY */
	76	tmp = t.oe_on * 1000 + 300;
	77	t.access = next_clk(t.oe_on, tmp, fclk_ps);
	78
	79	/* OE_OFF = after data gets sampled */
	80	tmp = t.access * 1000;
	81	t.oe_off = next_clk(t.access, tmp, fclk_ps);
	82
	83	t.cs_rd_off = t.oe_off;
	84
	85	tmp = t.cs_rd_off * 1000 + 7000 /* t_acsn_rdy_z */;
86	t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps);
87
88	/*
89	* WRITE ... from omap2420 TRM fig 12-15
90	*/
91
92	/* ADV_WR_OFF = t_acsnh_advnh */
93	t.adv_wr_off = t.adv_rd_off;
94
95	/* WE_ON = t_acsnh_advnh + t_advn_wen (then wait for nRDY) */
96	t.we_on = next_clk(t.adv_wr_off, t_acsnh_advnh + 1000, fclk_ps);
97
98	/* WE_OFF = after data gets sampled */
99	tmp = t.we_on * 1000 + 300;
100	t.we_off = next_clk(t.we_on, tmp, fclk_ps);
101
102	t.cs_wr_off = t.we_off;
103
104	tmp = t.cs_wr_off * 1000 + 7000 /* t_acsn_rdy_z */;
105	t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps);
106
107	return gpmc_cs_set_timings(async_cs, &t);
108	}
109
110	static int tusb_set_sync_mode(unsigned sysclk_ps, unsigned fclk_ps)
111	{
112	struct gpmc_timings t;
113	unsigned t_scsnh_advnh = sysclk_ps + 3000;
114	unsigned tmp;
115
116	memset(&t, 0, sizeof(t));
117	t.cs_on = 8;
118
119	/* ADV_ON = t_acsnh_advnh - t_advn */
120	t.adv_on = next_clk(t.cs_on, t_scsnh_advnh - 7000, fclk_ps);
121
122	/* GPMC_CLK rate = fclk rate / div */
a3551f5b AH	123	t.sync_clk = 11100 /* 11.1 nsec */;
a3551f5b AH	124	tmp = (t.sync_clk + fclk_ps - 1) / fclk_ps;
c1ed6407 DB	125	if (tmp > 4)
	126	return -ERANGE;
	127	if (tmp <= 0)
	128	tmp = 1;
	129	t.page_burst_access = (fclk_ps * tmp) / 1000;
	130
	131	/*
	132	* READ ... based on omap2420 TRM fig 12-19, 12-20
	133	*/
	134
	135	/* ADV_RD_OFF = t_scsnh_advnh */
	136	t.adv_rd_off = next_clk(t.adv_on, t_scsnh_advnh, fclk_ps);
	137
	138	/* OE_ON = t_scsnh_advnh + t_advn_oen * fclk_ps (then wait for nRDY) */
	139	tmp = (t.adv_rd_off * 1000) + (3 * fclk_ps);
	140	t.oe_on = next_clk(t.adv_on, tmp, fclk_ps);
	141
	142	/* ACCESS = number of clock cycles after t_adv_eon */
	143	tmp = (t.oe_on * 1000) + (5 * fclk_ps);
	144	t.access = next_clk(t.oe_on, tmp, fclk_ps);
	145
	146	/* OE_OFF = after data gets sampled */
	147	tmp = (t.access * 1000) + (1 * fclk_ps);
	148	t.oe_off = next_clk(t.access, tmp, fclk_ps);
	149
	150	t.cs_rd_off = t.oe_off;
	151
	152	tmp = t.cs_rd_off * 1000 + 7000 /* t_scsn_rdy_z */;
	153	t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps);
	154
	155	/*
	156	* WRITE ... based on omap2420 TRM fig 12-21
	157	*/
	158
	159	/* ADV_WR_OFF = t_scsnh_advnh */
	160	t.adv_wr_off = t.adv_rd_off;
	161
	162	/* WE_ON = t_scsnh_advnh + t_advn_wen * fclk_ps (then wait for nRDY) */
	163	tmp = (t.adv_wr_off * 1000) + (3 * fclk_ps);
	164	t.we_on = next_clk(t.adv_wr_off, tmp, fclk_ps);
	165
	166	/* WE_OFF = number of clock cycles after t_adv_wen */
	167	tmp = (t.we_on * 1000) + (6 * fclk_ps);
	168	t.we_off = next_clk(t.we_on, tmp, fclk_ps);
	169
	170	t.cs_wr_off = t.we_off;
	171
	172	tmp = t.cs_wr_off * 1000 + 7000 /* t_scsn_rdy_z */;
	173	t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps);
	174
	175	return gpmc_cs_set_timings(sync_cs, &t);
	176	}
	177
	178	extern unsigned long gpmc_get_fclk_period(void);
	179
	180	/* tusb driver calls this when it changes the chip's clocking */
	181	int tusb6010_platform_retime(unsigned is_refclk)
	182	{
	183	static const char error[] =
	184	KERN_ERR "tusb6010 %s retime error %d\n";
	185
	186	unsigned fclk_ps = gpmc_get_fclk_period();
	187	unsigned sysclk_ps;
	188	int status;
189
eaf9393b	190	if (!refclk_psec \|\| fclk_ps == 0)
c1ed6407 DB	191	return -ENODEV;
	192
	193	sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60;
	194
	195	status = tusb_set_async_mode(sysclk_ps, fclk_ps);
	196	if (status < 0) {
	197	printk(error, "async", status);
	198	goto done;
	199	}
	200	status = tusb_set_sync_mode(sysclk_ps, fclk_ps);
	201	if (status < 0)
	202	printk(error, "sync", status);
	203	done:
	204	return status;
	205	}
	206	EXPORT_SYMBOL_GPL(tusb6010_platform_retime);
	207
	208	static struct resource tusb_resources[] = {
	209	/* Order is significant! The start/end fields
	210	* are updated during setup..
	211	*/
	212	{ /* Asynchronous access */
	213	.flags = IORESOURCE_MEM,
	214	},
	215	{ /* Synchronous access */
	216	.flags = IORESOURCE_MEM,
	217	},
	218	{ /* IRQ */
6ec1e077	219	.name = "mc",
c1ed6407 DB	220	.flags = IORESOURCE_IRQ,
	221	},
	222	};
	223
	224	static u64 tusb_dmamask = ~(u32)0;
	225
	226	static struct platform_device tusb_device = {
18688fbe	227	.name = "musb-tusb",
c1ed6407 DB	228	.id = -1,
	229	.dev = {
	230	.dma_mask = &tusb_dmamask,
	231	.coherent_dma_mask = 0xffffffff,
	232	},
	233	.num_resources = ARRAY_SIZE(tusb_resources),
	234	.resource = tusb_resources,
	235	};
	236
	237
	238	/* this may be called only from board-.c setup code /
	239	int __init
	240	tusb6010_setup_interface(struct musb_hdrc_platform_data *data,
	241	unsigned ps_refclk, unsigned waitpin,
	242	unsigned async, unsigned sync,
	243	unsigned irq, unsigned dmachan)
	244	{
	245	int status;
	246	static char error[] __initdata =
	247	KERN_ERR "tusb6010 init error %d, %d\n";
	248
	249	/* ASYNC region, primarily for PIO */
	250	status = gpmc_cs_request(async, SZ_16M, (unsigned long *)
	251	&tusb_resources[0].start);
	252	if (status < 0) {
	253	printk(error, 1, status);
	254	return status;
	255	}
	256	tusb_resources[0].end = tusb_resources[0].start + 0x9ff;
	257	async_cs = async;
	258	gpmc_cs_write_reg(async, GPMC_CS_CONFIG1,
	259	GPMC_CONFIG1_PAGE_LEN(2)
	260	\| GPMC_CONFIG1_WAIT_READ_MON
	261	\| GPMC_CONFIG1_WAIT_WRITE_MON
	262	\| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
	263	\| GPMC_CONFIG1_READTYPE_ASYNC
	264	\| GPMC_CONFIG1_WRITETYPE_ASYNC
	265	\| GPMC_CONFIG1_DEVICESIZE_16
	266	\| GPMC_CONFIG1_DEVICETYPE_NOR
	267	\| GPMC_CONFIG1_MUXADDDATA);
	268
	269
	270	/* SYNC region, primarily for DMA */
	271	status = gpmc_cs_request(sync, SZ_16M, (unsigned long *)
	272	&tusb_resources[1].start);
	273	if (status < 0) {
	274	printk(error, 2, status);
	275	return status;
	276	}
	277	tusb_resources[1].end = tusb_resources[1].start + 0x9ff;
	278	sync_cs = sync;
	279	gpmc_cs_write_reg(sync, GPMC_CS_CONFIG1,
	280	GPMC_CONFIG1_READMULTIPLE_SUPP
	281	\| GPMC_CONFIG1_READTYPE_SYNC
	282	\| GPMC_CONFIG1_WRITEMULTIPLE_SUPP
	283	\| GPMC_CONFIG1_WRITETYPE_SYNC
	284	\| GPMC_CONFIG1_CLKACTIVATIONTIME(1)
	285	\| GPMC_CONFIG1_PAGE_LEN(2)
	286	\| GPMC_CONFIG1_WAIT_READ_MON
	287	\| GPMC_CONFIG1_WAIT_WRITE_MON
	288	\| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
	289	\| GPMC_CONFIG1_DEVICESIZE_16
	290	\| GPMC_CONFIG1_DEVICETYPE_NOR
	291	\| GPMC_CONFIG1_MUXADDDATA
292	/* fclk divider gets set later */
293	);
294
295	/* IRQ */
f2d18fea	296	status = gpio_request(irq, "TUSB6010 irq");
c1ed6407 DB	297	if (status < 0) {
	298	printk(error, 3, status);
	299	return status;
	300	}
40e3925b	301	gpio_direction_input(irq);
c1ed6407 DB	302	tusb_resources[2].start = irq + IH_GPIO_BASE;
	303
	304	/* set up memory timings ... can speed them up later */
	305	if (!ps_refclk) {
	306	printk(error, 4, status);
	307	return -ENODEV;
	308	}
	309	refclk_psec = ps_refclk;
	310	status = tusb6010_platform_retime(1);
	311	if (status < 0) {
	312	printk(error, 5, status);
	313	return status;
	314	}
	315
	316	/* finish device setup ... */
	317	if (!data) {
	318	printk(error, 6, status);
	319	return -ENODEV;
	320	}
c1ed6407 DB	321	tusb_device.dev.platform_data = data;
	322
	323	/* REVISIT let the driver know what DMA channels work */
	324	if (!dmachan)
	325	tusb_device.dev.dma_mask = NULL;
	326	else {
	327	/* assume OMAP 2420 ES2.0 and later */
	328	if (dmachan & (1 << 0))
f99bf16d	329	omap_mux_init_signal("sys_ndmareq0", 0);
c1ed6407	330	if (dmachan & (1 << 1))
f99bf16d	331	omap_mux_init_signal("sys_ndmareq1", 0);
c1ed6407	332	if (dmachan & (1 << 2))
f99bf16d	333	omap_mux_init_signal("sys_ndmareq2", 0);
c1ed6407	334	if (dmachan & (1 << 3))
f99bf16d	335	omap_mux_init_signal("sys_ndmareq3", 0);
c1ed6407	336	if (dmachan & (1 << 4))
f99bf16d	337	omap_mux_init_signal("sys_ndmareq4", 0);
c1ed6407	338	if (dmachan & (1 << 5))
f99bf16d	339	omap_mux_init_signal("sys_ndmareq5", 0);
c1ed6407 DB	340	}
	341
	342	/* so far so good ... register the device */
	343	status = platform_device_register(&tusb_device);
	344	if (status < 0) {
	345	printk(error, 7, status);
	346	return status;
	347	}
	348	return 0;
	349	}