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

/*
 * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
 *
 * Copyright (C) 2004 Texas Instruments, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>

#include <asm/irq.h>

#include <plat/usb.h>
#include <plat/board.h>

#include "control.h"
#include "mux.h"

#define INT_USB_IRQ_GEN		INT_24XX_USB_IRQ_GEN
#define INT_USB_IRQ_NISO	INT_24XX_USB_IRQ_NISO
#define INT_USB_IRQ_ISO		INT_24XX_USB_IRQ_ISO
#define INT_USB_IRQ_HGEN	INT_24XX_USB_IRQ_HGEN
#define INT_USB_IRQ_OTG		INT_24XX_USB_IRQ_OTG

#if defined(CONFIG_ARCH_OMAP2)

#ifdef	CONFIG_USB_GADGET_OMAP

static struct resource udc_resources[] = {
	/* order is significant! */
	{		/* registers */
		.start		= UDC_BASE,
		.end		= UDC_BASE + 0xff,
		.flags		= IORESOURCE_MEM,
	}, {		/* general IRQ */
		.start		= INT_USB_IRQ_GEN,
		.flags		= IORESOURCE_IRQ,
	}, {		/* PIO IRQ */
		.start		= INT_USB_IRQ_NISO,
		.flags		= IORESOURCE_IRQ,
	}, {		/* SOF IRQ */
		.start		= INT_USB_IRQ_ISO,
		.flags		= IORESOURCE_IRQ,
	},
};

static u64 udc_dmamask = ~(u32)0;

static struct platform_device udc_device = {
	.name		= "omap_udc",
	.id		= -1,
	.dev = {
		.dma_mask		= &udc_dmamask,
		.coherent_dma_mask	= 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(udc_resources),
	.resource	= udc_resources,
};

static inline void udc_device_init(struct omap_usb_config *pdata)
{
	pdata->udc_device = &udc_device;
}

#else

static inline void udc_device_init(struct omap_usb_config *pdata)
{
}

#endif

#if	defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)

/* The dmamask must be set for OHCI to work */
static u64 ohci_dmamask = ~(u32)0;

static struct resource ohci_resources[] = {
	{
		.start	= OMAP_OHCI_BASE,
		.end	= OMAP_OHCI_BASE + 0xff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= INT_USB_IRQ_HGEN,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct platform_device ohci_device = {
	.name			= "ohci",
	.id			= -1,
	.dev = {
		.dma_mask		= &ohci_dmamask,
		.coherent_dma_mask	= 0xffffffff,
	},
	.num_resources	= ARRAY_SIZE(ohci_resources),
	.resource		= ohci_resources,
};

static inline void ohci_device_init(struct omap_usb_config *pdata)
{
	pdata->ohci_device = &ohci_device;
}

#else

static inline void ohci_device_init(struct omap_usb_config *pdata)
{
}

#endif

#if	defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)

static struct resource otg_resources[] = {
	/* order is significant! */
	{
		.start		= OTG_BASE,
		.end		= OTG_BASE + 0xff,
		.flags		= IORESOURCE_MEM,
	}, {
		.start		= INT_USB_IRQ_OTG,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device otg_device = {
	.name		= "omap_otg",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(otg_resources),
	.resource	= otg_resources,
};

static inline void otg_device_init(struct omap_usb_config *pdata)
{
	pdata->otg_device = &otg_device;
}

#else

static inline void otg_device_init(struct omap_usb_config *pdata)
{
}

#endif

static void omap2_usb_devconf_clear(u8 port, u32 mask)
{
	u32 r;

	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
	r &= ~USBTXWRMODEI(port, mask);
	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
}

static void omap2_usb_devconf_set(u8 port, u32 mask)
{
	u32 r;

	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
	r |= USBTXWRMODEI(port, mask);
	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
}

static void omap2_usb2_disable_5pinbitll(void)
{
	u32 r;

	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
	r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI);
	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
}

static void omap2_usb2_enable_5pinunitll(void)
{
	u32 r;

	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
	r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI;
	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
}

static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device)
{
	u32	syscon1 = 0;

	omap2_usb_devconf_clear(0, USB_BIDIR_TLL);

	if (nwires == 0)
		return 0;

	if (is_device)
		omap_mux_init_signal("usb0_puen", 0);

	omap_mux_init_signal("usb0_dat", 0);
	omap_mux_init_signal("usb0_txen", 0);
	omap_mux_init_signal("usb0_se0", 0);
	if (nwires != 3)
		omap_mux_init_signal("usb0_rcv", 0);

	switch (nwires) {
	case 3:
		syscon1 = 2;
		omap2_usb_devconf_set(0, USB_BIDIR);
		break;
	case 4:
		syscon1 = 1;
		omap2_usb_devconf_set(0, USB_BIDIR);
		break;
	case 6:
		syscon1 = 3;
		omap_mux_init_signal("usb0_vp", 0);
		omap_mux_init_signal("usb0_vm", 0);
		omap2_usb_devconf_set(0, USB_UNIDIR);
		break;
	default:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			0, nwires);
	}

	return syscon1 << 16;
}

static u32 __init omap2_usb1_init(unsigned nwires)
{
	u32	syscon1 = 0;

	omap2_usb_devconf_clear(1, USB_BIDIR_TLL);

	if (nwires == 0)
		return 0;

	/* NOTE:  board-specific code must set up pin muxing for usb1,
	 * since each signal could come out on either of two balls.
	 */

	switch (nwires) {
	case 2:
		/* NOTE: board-specific code must override this setting if
		 * this TLL link is not using DP/DM
		 */
		syscon1 = 1;
		omap2_usb_devconf_set(1, USB_BIDIR_TLL);
		break;
	case 3:
		syscon1 = 2;
		omap2_usb_devconf_set(1, USB_BIDIR);
		break;
	case 4:
		syscon1 = 1;
		omap2_usb_devconf_set(1, USB_BIDIR);
		break;
	case 6:
	default:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			1, nwires);
	}

	return syscon1 << 20;
}

static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup)
{
	u32	syscon1 = 0;

	omap2_usb2_disable_5pinbitll();
	alt_pingroup = 0;

	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
	if (alt_pingroup || nwires == 0)
		return 0;

	omap_mux_init_signal("usb2_dat", 0);
	omap_mux_init_signal("usb2_se0", 0);
	if (nwires > 2)
		omap_mux_init_signal("usb2_txen", 0);
	if (nwires > 3)
		omap_mux_init_signal("usb2_rcv", 0);

	switch (nwires) {
	case 2:
		/* NOTE: board-specific code must override this setting if
		 * this TLL link is not using DP/DM
		 */
		syscon1 = 1;
		omap2_usb_devconf_set(2, USB_BIDIR_TLL);
		break;
	case 3:
		syscon1 = 2;
		omap2_usb_devconf_set(2, USB_BIDIR);
		break;
	case 4:
		syscon1 = 1;
		omap2_usb_devconf_set(2, USB_BIDIR);
		break;
	case 5:
		/* NOTE: board-specific code must mux this setting depending
		 * on TLL link using DP/DM.  Something must also
		 * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
		 * 2420: hdq_sio.usb2_tllse0 or vlynq_rx0.usb2_tllse0
		 * 2430: hdq_sio.usb2_tllse0 or sdmmc2_dat0.usb2_tllse0
		 */

		syscon1 = 3;
		omap2_usb2_enable_5pinunitll();
		break;
	case 6:
	default:
		printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
			2, nwires);
	}

	return syscon1 << 24;
}

void __init omap2_usbfs_init(struct omap_usb_config *pdata)
{
	struct clk *ick;

	if (!cpu_is_omap24xx())
		return;

	ick = clk_get(NULL, "usb_l4_ick");
	if (IS_ERR(ick))
		return;

	clk_enable(ick);
	pdata->usb0_init = omap2_usb0_init;
	pdata->usb1_init = omap2_usb1_init;
	pdata->usb2_init = omap2_usb2_init;
	udc_device_init(pdata);
	ohci_device_init(pdata);
	otg_device_init(pdata);
	omap_otg_init(pdata);
	clk_disable(ick);
	clk_put(ick);
}

#endif
Commit	Line	Data
b5e8905b TL	1	/*
	2	* Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
	3	*
	4	* Copyright (C) 2004 Texas Instruments, Inc.
	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 as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21	#include <linux/module.h>
	22	#include <linux/kernel.h>
	23	#include <linux/types.h>
	24	#include <linux/errno.h>
	25	#include <linux/init.h>
	26	#include <linux/platform_device.h>
98093839 TL	27	#include <linux/clk.h>
98093839 TL	28	#include <linux/err.h>
b5e8905b TL	29
	30	#include <asm/irq.h>
	31
b5e8905b TL	32	#include <plat/usb.h>
	33	#include <plat/board.h>
	34
4814ced5 PW	35	#include "control.h"
	36	#include "mux.h"
	37
b5e8905b TL	38	#define INT_USB_IRQ_GEN INT_24XX_USB_IRQ_GEN
	39	#define INT_USB_IRQ_NISO INT_24XX_USB_IRQ_NISO
	40	#define INT_USB_IRQ_ISO INT_24XX_USB_IRQ_ISO
	41	#define INT_USB_IRQ_HGEN INT_24XX_USB_IRQ_HGEN
	42	#define INT_USB_IRQ_OTG INT_24XX_USB_IRQ_OTG
	43
	44	#if defined(CONFIG_ARCH_OMAP2)
	45
	46	#ifdef CONFIG_USB_GADGET_OMAP
	47
	48	static struct resource udc_resources[] = {
	49	/* order is significant! */
	50	{ /* registers */
	51	.start = UDC_BASE,
	52	.end = UDC_BASE + 0xff,
	53	.flags = IORESOURCE_MEM,
	54	}, { /* general IRQ */
	55	.start = INT_USB_IRQ_GEN,
	56	.flags = IORESOURCE_IRQ,
	57	}, { /* PIO IRQ */
	58	.start = INT_USB_IRQ_NISO,
	59	.flags = IORESOURCE_IRQ,
	60	}, { /* SOF IRQ */
	61	.start = INT_USB_IRQ_ISO,
	62	.flags = IORESOURCE_IRQ,
	63	},
	64	};
	65
	66	static u64 udc_dmamask = ~(u32)0;
	67
	68	static struct platform_device udc_device = {
	69	.name = "omap_udc",
	70	.id = -1,
	71	.dev = {
	72	.dma_mask = &udc_dmamask,
	73	.coherent_dma_mask = 0xffffffff,
	74	},
	75	.num_resources = ARRAY_SIZE(udc_resources),
	76	.resource = udc_resources,
	77	};
	78
	79	static inline void udc_device_init(struct omap_usb_config *pdata)
	80	{
	81	pdata->udc_device = &udc_device;
	82	}
	83
	84	#else
	85
	86	static inline void udc_device_init(struct omap_usb_config *pdata)
	87	{
	88	}
	89
	90	#endif
	91
	92	#if defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)
	93
	94	/* The dmamask must be set for OHCI to work */
	95	static u64 ohci_dmamask = ~(u32)0;
	96
	97	static struct resource ohci_resources[] = {
	98	{
	99	.start = OMAP_OHCI_BASE,
	100	.end = OMAP_OHCI_BASE + 0xff,
	101	.flags = IORESOURCE_MEM,
102	},
103	{
104	.start = INT_USB_IRQ_HGEN,
105	.flags = IORESOURCE_IRQ,
106	},
107	};
108
109	static struct platform_device ohci_device = {
110	.name = "ohci",
111	.id = -1,
112	.dev = {
113	.dma_mask = &ohci_dmamask,
114	.coherent_dma_mask = 0xffffffff,
115	},
116	.num_resources = ARRAY_SIZE(ohci_resources),
117	.resource = ohci_resources,
118	};
119
120	static inline void ohci_device_init(struct omap_usb_config *pdata)
121	{
122	pdata->ohci_device = &ohci_device;
123	}
124
125	#else
126
127	static inline void ohci_device_init(struct omap_usb_config *pdata)
128	{
129	}
130
131	#endif
132
133	#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
134
135	static struct resource otg_resources[] = {
136	/* order is significant! */
137	{
138	.start = OTG_BASE,
139	.end = OTG_BASE + 0xff,
140	.flags = IORESOURCE_MEM,
141	}, {
142	.start = INT_USB_IRQ_OTG,
143	.flags = IORESOURCE_IRQ,
144	},
145	};
146
147	static struct platform_device otg_device = {
148	.name = "omap_otg",
149	.id = -1,
150	.num_resources = ARRAY_SIZE(otg_resources),
151	.resource = otg_resources,
152	};
153
154	static inline void otg_device_init(struct omap_usb_config *pdata)
155	{
156	pdata->otg_device = &otg_device;
157	}
158
159	#else
160
161	static inline void otg_device_init(struct omap_usb_config *pdata)
162	{
163	}
164
165	#endif
166
167	static void omap2_usb_devconf_clear(u8 port, u32 mask)
168	{
169	u32 r;
170
171	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
172	r &= ~USBTXWRMODEI(port, mask);
173	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
174	}
175
176	static void omap2_usb_devconf_set(u8 port, u32 mask)
177	{
178	u32 r;
179
180	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
181	r \|= USBTXWRMODEI(port, mask);
182	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
183	}
184
185	static void omap2_usb2_disable_5pinbitll(void)
186	{
187	u32 r;
188
189	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
190	r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) \| USBT2TLL5PI);
191	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
192	}
193
194	static void omap2_usb2_enable_5pinunitll(void)
195	{
196	u32 r;
197
198	r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
199	r \|= USBTXWRMODEI(2, USB_UNIDIR_TLL) \| USBT2TLL5PI;
200	omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
201	}
202
203	static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device)
204	{
205	u32 syscon1 = 0;
206
207	omap2_usb_devconf_clear(0, USB_BIDIR_TLL);
208
209	if (nwires == 0)
210	return 0;
211
212	if (is_device)
0d600ff6	213	omap_mux_init_signal("usb0_puen", 0);
b5e8905b	214
0d600ff6 TL	215	omap_mux_init_signal("usb0_dat", 0);
	216	omap_mux_init_signal("usb0_txen", 0);
	217	omap_mux_init_signal("usb0_se0", 0);
b5e8905b	218	if (nwires != 3)
0d600ff6	219	omap_mux_init_signal("usb0_rcv", 0);
b5e8905b TL	220
	221	switch (nwires) {
	222	case 3:
	223	syscon1 = 2;
	224	omap2_usb_devconf_set(0, USB_BIDIR);
	225	break;
	226	case 4:
	227	syscon1 = 1;
	228	omap2_usb_devconf_set(0, USB_BIDIR);
	229	break;
	230	case 6:
	231	syscon1 = 3;
0d600ff6 TL	232	omap_mux_init_signal("usb0_vp", 0);
0d600ff6 TL	233	omap_mux_init_signal("usb0_vm", 0);
b5e8905b TL	234	omap2_usb_devconf_set(0, USB_UNIDIR);
	235	break;
	236	default:
	237	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
	238	0, nwires);
	239	}
	240
	241	return syscon1 << 16;
	242	}
	243
	244	static u32 __init omap2_usb1_init(unsigned nwires)
	245	{
	246	u32 syscon1 = 0;
	247
	248	omap2_usb_devconf_clear(1, USB_BIDIR_TLL);
	249
	250	if (nwires == 0)
	251	return 0;
	252
	253	/* NOTE: board-specific code must set up pin muxing for usb1,
	254	* since each signal could come out on either of two balls.
	255	*/
	256
	257	switch (nwires) {
	258	case 2:
	259	/* NOTE: board-specific code must override this setting if
	260	* this TLL link is not using DP/DM
	261	*/
	262	syscon1 = 1;
	263	omap2_usb_devconf_set(1, USB_BIDIR_TLL);
	264	break;
	265	case 3:
	266	syscon1 = 2;
	267	omap2_usb_devconf_set(1, USB_BIDIR);
	268	break;
	269	case 4:
	270	syscon1 = 1;
	271	omap2_usb_devconf_set(1, USB_BIDIR);
	272	break;
	273	case 6:
	274	default:
	275	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
	276	1, nwires);
	277	}
	278
	279	return syscon1 << 20;
	280	}
	281
	282	static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup)
	283	{
	284	u32 syscon1 = 0;
	285
	286	omap2_usb2_disable_5pinbitll();
	287	alt_pingroup = 0;
	288
	289	/* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
	290	if (alt_pingroup \|\| nwires == 0)
	291	return 0;
	292
0d600ff6 TL	293	omap_mux_init_signal("usb2_dat", 0);
0d600ff6 TL	294	omap_mux_init_signal("usb2_se0", 0);
b5e8905b	295	if (nwires > 2)
0d600ff6	296	omap_mux_init_signal("usb2_txen", 0);
b5e8905b	297	if (nwires > 3)
0d600ff6	298	omap_mux_init_signal("usb2_rcv", 0);
b5e8905b TL	299
	300	switch (nwires) {
	301	case 2:
	302	/* NOTE: board-specific code must override this setting if
	303	* this TLL link is not using DP/DM
	304	*/
	305	syscon1 = 1;
	306	omap2_usb_devconf_set(2, USB_BIDIR_TLL);
	307	break;
	308	case 3:
	309	syscon1 = 2;
	310	omap2_usb_devconf_set(2, USB_BIDIR);
	311	break;
	312	case 4:
	313	syscon1 = 1;
	314	omap2_usb_devconf_set(2, USB_BIDIR);
	315	break;
	316	case 5:
0d600ff6 TL	317	/* NOTE: board-specific code must mux this setting depending
0d600ff6 TL	318	* on TLL link using DP/DM. Something must also
b5e8905b	319	* set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
0d600ff6 TL	320	* 2420: hdq_sio.usb2_tllse0 or vlynq_rx0.usb2_tllse0
0d600ff6 TL	321	* 2430: hdq_sio.usb2_tllse0 or sdmmc2_dat0.usb2_tllse0
b5e8905b	322	*/
0d600ff6	323
b5e8905b TL	324	syscon1 = 3;
	325	omap2_usb2_enable_5pinunitll();
	326	break;
	327	case 6:
	328	default:
	329	printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
	330	2, nwires);
	331	}
	332
	333	return syscon1 << 24;
	334	}
	335
	336	void __init omap2_usbfs_init(struct omap_usb_config *pdata)
	337	{
98093839 TL	338	struct clk *ick;
98093839 TL	339
b5e8905b TL	340	if (!cpu_is_omap24xx())
	341	return;
	342
98093839 TL	343	ick = clk_get(NULL, "usb_l4_ick");
	344	if (IS_ERR(ick))
	345	return;
	346
	347	clk_enable(ick);
b5e8905b TL	348	pdata->usb0_init = omap2_usb0_init;
	349	pdata->usb1_init = omap2_usb1_init;
	350	pdata->usb2_init = omap2_usb2_init;
	351	udc_device_init(pdata);
	352	ohci_device_init(pdata);
	353	otg_device_init(pdata);
	354	omap_otg_init(pdata);
98093839 TL	355	clk_disable(ick);
98093839 TL	356	clk_put(ick);
b5e8905b TL	357	}
	358
	359	#endif