[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;


/* 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.mux = true;

	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, &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.mux = true;
	dev_t.sync_read = true;
	dev_t.sync_write = true;

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