[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/string.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/export.h>
#include <linux/platform_data/usb-omap.h>

#include <linux/usb/musb.h>

#include "gpmc.h"

#include "mux.h"

static u8		async_cs, sync_cs;
static unsigned		refclk_psec;

static struct gpmc_settings tusb_async = {
	.mux_add_data	= GPMC_MUX_AD,
};

static struct gpmc_settings tusb_sync = {
	.sync_read	= true,
	.sync_write	= true,
	.mux_add_data	= GPMC_MUX_AD,
};

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

static int tusb_set_async_mode(unsigned sysclk_ps)
{
	struct gpmc_device_timings dev_t;
	struct gpmc_timings	t;
	unsigned		t_acsnh_advnh = sysclk_ps + 3000;

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

	dev_t.t_ceasu = 8 * 1000;
	dev_t.t_avdasu = t_acsnh_advnh - 7000;
	dev_t.t_ce_avd = 1000;
	dev_t.t_avdp_r = t_acsnh_advnh;
	dev_t.t_oeasu = t_acsnh_advnh + 1000;
	dev_t.t_oe = 300;
	dev_t.t_cez_r = 7000;
	dev_t.t_cez_w = dev_t.t_cez_r;
	dev_t.t_avdp_w = t_acsnh_advnh;
	dev_t.t_weasu = t_acsnh_advnh + 1000;
	dev_t.t_wpl = 300;
	dev_t.cyc_aavdh_we = 1;

	gpmc_calc_timings(&t, &tusb_async, &dev_t);

	return gpmc_cs_set_timings(async_cs, &t);
}

static int tusb_set_sync_mode(unsigned sysclk_ps)
{
	struct gpmc_device_timings dev_t;
	struct gpmc_timings	t;
	unsigned		t_scsnh_advnh = sysclk_ps + 3000;

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

	dev_t.clk = 11100;
	dev_t.t_bacc = 1000;
	dev_t.t_ces = 1000;
	dev_t.t_ceasu = 8 * 1000;
	dev_t.t_avdasu = t_scsnh_advnh - 7000;
	dev_t.t_ce_avd = 1000;
	dev_t.t_avdp_r = t_scsnh_advnh;
	dev_t.cyc_aavdh_oe = 3;
	dev_t.cyc_oe = 5;
	dev_t.t_ce_rdyz = 7000;
	dev_t.t_avdp_w = t_scsnh_advnh;
	dev_t.cyc_aavdh_we = 3;
	dev_t.cyc_wpl = 6;
	dev_t.t_ce_rdyz = 7000;

	gpmc_calc_timings(&t, &tusb_sync, &dev_t);

	return gpmc_cs_set_timings(sync_cs, &t);
}

/* 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	sysclk_ps;
	int		status;

	if (!refclk_psec)
		return -ENODEV;

	sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60;

	status = tusb_set_async_mode(sysclk_ps);
	if (status < 0) {
		printk(error, "async", status);
		goto done;
	}
	status = tusb_set_sync_mode(sysclk_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_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_one(irq, GPIOF_IN, "TUSB6010 irq");
	if (status < 0) {
		printk(error, 3, status);
		return status;
	}
	tusb_resources[2].start = gpio_to_irq(irq);

	/* 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
d44b28c4	11	#include <linux/string.h>
c1ed6407 DB	12	#include <linux/types.h>
	13	#include <linux/errno.h>
	14	#include <linux/delay.h>
	15	#include <linux/platform_device.h>
f2d18fea	16	#include <linux/gpio.h>
dc28094b	17	#include <linux/export.h>
e8c4a7ac	18	#include <linux/platform_data/usb-omap.h>
c1ed6407 DB	19
	20	#include <linux/usb/musb.h>
	21
3ef5d007	22	#include "gpmc.h"
c1ed6407	23
f99bf16d	24	#include "mux.h"
c1ed6407 DB	25
	26	static u8 async_cs, sync_cs;
	27	static unsigned refclk_psec;
	28
c3be5b45 JH	29	static struct gpmc_settings tusb_async = {
	30	.mux_add_data = GPMC_MUX_AD,
	31	};
	32
	33	static struct gpmc_settings tusb_sync = {
	34	.sync_read = true,
	35	.sync_write = true,
	36	.mux_add_data = GPMC_MUX_AD,
	37	};
c1ed6407	38
c1ed6407 DB	39	/* NOTE: timings are from tusb 6010 datasheet Rev 1.8, 12-Sept 2006 */
c1ed6407 DB	40
47acde16	41	static int tusb_set_async_mode(unsigned sysclk_ps)
c1ed6407	42	{
47acde16	43	struct gpmc_device_timings dev_t;
c1ed6407 DB	44	struct gpmc_timings t;
c1ed6407 DB	45	unsigned t_acsnh_advnh = sysclk_ps + 3000;
c1ed6407	46
47acde16	47	memset(&dev_t, 0, sizeof(dev_t));
c1ed6407	48
47acde16 AM	49	dev_t.t_ceasu = 8 * 1000;
	50	dev_t.t_avdasu = t_acsnh_advnh - 7000;
	51	dev_t.t_ce_avd = 1000;
	52	dev_t.t_avdp_r = t_acsnh_advnh;
	53	dev_t.t_oeasu = t_acsnh_advnh + 1000;
	54	dev_t.t_oe = 300;
	55	dev_t.t_cez_r = 7000;
	56	dev_t.t_cez_w = dev_t.t_cez_r;
	57	dev_t.t_avdp_w = t_acsnh_advnh;
	58	dev_t.t_weasu = t_acsnh_advnh + 1000;
	59	dev_t.t_wpl = 300;
	60	dev_t.cyc_aavdh_we = 1;
c1ed6407	61
c3be5b45	62	gpmc_calc_timings(&t, &tusb_async, &dev_t);
c1ed6407 DB	63
	64	return gpmc_cs_set_timings(async_cs, &t);
	65	}
	66
47acde16	67	static int tusb_set_sync_mode(unsigned sysclk_ps)
c1ed6407	68	{
47acde16	69	struct gpmc_device_timings dev_t;
c1ed6407 DB	70	struct gpmc_timings t;
c1ed6407 DB	71	unsigned t_scsnh_advnh = sysclk_ps + 3000;
c1ed6407	72
47acde16 AM	73	memset(&dev_t, 0, sizeof(dev_t));
47acde16 AM	74
47acde16 AM	75	dev_t.clk = 11100;
	76	dev_t.t_bacc = 1000;
	77	dev_t.t_ces = 1000;
	78	dev_t.t_ceasu = 8 * 1000;
	79	dev_t.t_avdasu = t_scsnh_advnh - 7000;
	80	dev_t.t_ce_avd = 1000;
	81	dev_t.t_avdp_r = t_scsnh_advnh;
	82	dev_t.cyc_aavdh_oe = 3;
	83	dev_t.cyc_oe = 5;
	84	dev_t.t_ce_rdyz = 7000;
	85	dev_t.t_avdp_w = t_scsnh_advnh;
	86	dev_t.cyc_aavdh_we = 3;
	87	dev_t.cyc_wpl = 6;
	88	dev_t.t_ce_rdyz = 7000;
	89
c3be5b45	90	gpmc_calc_timings(&t, &tusb_sync, &dev_t);
559d94b0	91
c1ed6407 DB	92	return gpmc_cs_set_timings(sync_cs, &t);
	93	}
	94
c1ed6407 DB	95	/* tusb driver calls this when it changes the chip's clocking */
	96	int tusb6010_platform_retime(unsigned is_refclk)
	97	{
	98	static const char error[] =
	99	KERN_ERR "tusb6010 %s retime error %d\n";
	100
c1ed6407 DB	101	unsigned sysclk_ps;
	102	int status;
	103
47acde16	104	if (!refclk_psec)
c1ed6407 DB	105	return -ENODEV;
	106
	107	sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60;
	108
47acde16	109	status = tusb_set_async_mode(sysclk_ps);
c1ed6407 DB	110	if (status < 0) {
	111	printk(error, "async", status);
	112	goto done;
	113	}
47acde16	114	status = tusb_set_sync_mode(sysclk_ps);
c1ed6407 DB	115	if (status < 0)
	116	printk(error, "sync", status);
	117	done:
	118	return status;
	119	}
	120	EXPORT_SYMBOL_GPL(tusb6010_platform_retime);
	121
	122	static struct resource tusb_resources[] = {
	123	/* Order is significant! The start/end fields
	124	* are updated during setup..
	125	*/
	126	{ /* Asynchronous access */
	127	.flags = IORESOURCE_MEM,
	128	},
	129	{ /* Synchronous access */
	130	.flags = IORESOURCE_MEM,
	131	},
	132	{ /* IRQ */
6ec1e077	133	.name = "mc",
c1ed6407 DB	134	.flags = IORESOURCE_IRQ,
	135	},
	136	};
	137
	138	static u64 tusb_dmamask = ~(u32)0;
	139
	140	static struct platform_device tusb_device = {
18688fbe	141	.name = "musb-tusb",
c1ed6407 DB	142	.id = -1,
	143	.dev = {
	144	.dma_mask = &tusb_dmamask,
	145	.coherent_dma_mask = 0xffffffff,
	146	},
	147	.num_resources = ARRAY_SIZE(tusb_resources),
	148	.resource = tusb_resources,
	149	};
	150
	151
	152	/* this may be called only from board-.c setup code /
	153	int __init
	154	tusb6010_setup_interface(struct musb_hdrc_platform_data *data,
	155	unsigned ps_refclk, unsigned waitpin,
	156	unsigned async, unsigned sync,
	157	unsigned irq, unsigned dmachan)
	158	{
	159	int status;
	160	static char error[] __initdata =
	161	KERN_ERR "tusb6010 init error %d, %d\n";
	162
	163	/* ASYNC region, primarily for PIO */
	164	status = gpmc_cs_request(async, SZ_16M, (unsigned long *)
	165	&tusb_resources[0].start);
	166	if (status < 0) {
	167	printk(error, 1, status);
	168	return status;
	169	}
	170	tusb_resources[0].end = tusb_resources[0].start + 0x9ff;
	171	async_cs = async;
	172	gpmc_cs_write_reg(async, GPMC_CS_CONFIG1,
	173	GPMC_CONFIG1_PAGE_LEN(2)
	174	\| GPMC_CONFIG1_WAIT_READ_MON
	175	\| GPMC_CONFIG1_WAIT_WRITE_MON
	176	\| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
	177	\| GPMC_CONFIG1_READTYPE_ASYNC
	178	\| GPMC_CONFIG1_WRITETYPE_ASYNC
	179	\| GPMC_CONFIG1_DEVICESIZE_16
	180	\| GPMC_CONFIG1_DEVICETYPE_NOR
	181	\| GPMC_CONFIG1_MUXADDDATA);
	182
	183
	184	/* SYNC region, primarily for DMA */
	185	status = gpmc_cs_request(sync, SZ_16M, (unsigned long *)
	186	&tusb_resources[1].start);
	187	if (status < 0) {
	188	printk(error, 2, status);
	189	return status;
	190	}
	191	tusb_resources[1].end = tusb_resources[1].start + 0x9ff;
	192	sync_cs = sync;
	193	gpmc_cs_write_reg(sync, GPMC_CS_CONFIG1,
	194	GPMC_CONFIG1_READMULTIPLE_SUPP
	195	\| GPMC_CONFIG1_READTYPE_SYNC
	196	\| GPMC_CONFIG1_WRITEMULTIPLE_SUPP
	197	\| GPMC_CONFIG1_WRITETYPE_SYNC
c1ed6407 DB	198	\| GPMC_CONFIG1_PAGE_LEN(2)
	199	\| GPMC_CONFIG1_WAIT_READ_MON
	200	\| GPMC_CONFIG1_WAIT_WRITE_MON
	201	\| GPMC_CONFIG1_WAIT_PIN_SEL(waitpin)
	202	\| GPMC_CONFIG1_DEVICESIZE_16
	203	\| GPMC_CONFIG1_DEVICETYPE_NOR
	204	\| GPMC_CONFIG1_MUXADDDATA
	205	/* fclk divider gets set later */
	206	);
	207
	208	/* IRQ */
bc593f5d	209	status = gpio_request_one(irq, GPIOF_IN, "TUSB6010 irq");
c1ed6407 DB	210	if (status < 0) {
	211	printk(error, 3, status);
	212	return status;
	213	}
3d09b33f	214	tusb_resources[2].start = gpio_to_irq(irq);
c1ed6407 DB	215
	216	/* set up memory timings ... can speed them up later */
	217	if (!ps_refclk) {
	218	printk(error, 4, status);
	219	return -ENODEV;
	220	}
	221	refclk_psec = ps_refclk;
	222	status = tusb6010_platform_retime(1);
	223	if (status < 0) {
	224	printk(error, 5, status);
	225	return status;
	226	}
	227
	228	/* finish device setup ... */
	229	if (!data) {
	230	printk(error, 6, status);
	231	return -ENODEV;
	232	}
c1ed6407 DB	233	tusb_device.dev.platform_data = data;
	234
	235	/* REVISIT let the driver know what DMA channels work */
	236	if (!dmachan)
	237	tusb_device.dev.dma_mask = NULL;
	238	else {
	239	/* assume OMAP 2420 ES2.0 and later */
	240	if (dmachan & (1 << 0))
f99bf16d	241	omap_mux_init_signal("sys_ndmareq0", 0);
c1ed6407	242	if (dmachan & (1 << 1))
f99bf16d	243	omap_mux_init_signal("sys_ndmareq1", 0);
c1ed6407	244	if (dmachan & (1 << 2))
f99bf16d	245	omap_mux_init_signal("sys_ndmareq2", 0);
c1ed6407	246	if (dmachan & (1 << 3))
f99bf16d	247	omap_mux_init_signal("sys_ndmareq3", 0);
c1ed6407	248	if (dmachan & (1 << 4))
f99bf16d	249	omap_mux_init_signal("sys_ndmareq4", 0);
c1ed6407	250	if (dmachan & (1 << 5))
f99bf16d	251	omap_mux_init_signal("sys_ndmareq5", 0);
c1ed6407 DB	252	}
	253
	254	/* so far so good ... register the device */
	255	status = platform_device_register(&tusb_device);
	256	if (status < 0) {
	257	printk(error, 7, status);
	258	return status;
	259	}
	260	return 0;
	261	}