[deliverable/linux.git] / arch / sh / boards / renesas / rts7751r2d / irq.c

/*
 * linux/arch/sh/boards/renesas/rts7751r2d/irq.c
 *
 * Copyright (C) 2007  Magnus Damm
 * Copyright (C) 2000  Kazumoto Kojima
 *
 * Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
 *
 * Modified for RTS7751R2D by
 * Atom Create Engineering Co., Ltd. 2002.
 */
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/voyagergx.h>
#include <asm/rts7751r2d.h>

#define R2D_NR_IRL 13

enum {
	UNUSED = 0,

	/* board specific interrupt sources (R2D-1 and R2D-PLUS) */
	EXT,              /* EXT_INT0-3 */
	RTC_T, RTC_A,     /* Real Time Clock */
	AX88796,          /* Ethernet controller (R2D-1 board) */
	KEY,              /* Key input (R2D-PLUS board) */
	SDCARD,           /* SD Card */
	CF_CD, CF_IDE,    /* CF Card Detect + CF IDE */
	SM501,            /* SM501 aka Voyager */
	PCI_INTD_RTL8139, /* Ethernet controller */
	PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */
	PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */
	PCI_INTB_SLOT,    /* PCI Slot 3.3v (R2D-1 board) */
	PCI_INTA_SLOT,    /* PCI Slot 3.3v */
	TP,               /* Touch Panel */
};

#ifdef CONFIG_RTS7751R2D_1

/* Vectors for R2D-1 */
static struct intc_vect vectors_r2d_1[] __initdata = {
	INTC_IRQ(EXT, IRQ_EXT),
	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
	INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD),
	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */
	INTC_IRQ(SM501, IRQ_VOYAGER),
	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
	INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB),
	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
	INTC_IRQ(TP, IRQ_TP),
};

/* IRLMSK mask register layout for R2D-1 */
static struct intc_mask_reg mask_registers_r2d_1[] __initdata = {
	{ 0xa4000000, 0, 16, /* IRLMSK */
	  { TP, PCI_INTA_SLOT, PCI_INTB_SLOT,
	    PCI_INTC_PCI1520, PCI_INTD_RTL8139,
	    SM501, CF_IDE, CF_CD, SDCARD, AX88796,
	    RTC_A, RTC_T, 0, 0, 0, EXT } },
};

/* IRLn to IRQ table for R2D-1 */
static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = {
	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
	IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T,
	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
	IRQ_TP,
};

static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
			 NULL, NULL, mask_registers_r2d_1, NULL, NULL);

#endif /* CONFIG_RTS7751R2D_1 */

#ifdef CONFIG_RTS7751R2D_PLUS

/* Vectors for R2D-PLUS */
static struct intc_vect vectors_r2d_plus[] __initdata = {
	INTC_IRQ(EXT, IRQ_EXT),
	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
	INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD),
	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE),
	INTC_IRQ(SM501, IRQ_VOYAGER),
	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
	INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB),
	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
	INTC_IRQ(TP, IRQ_TP),
};

/* IRLMSK mask register layout for R2D-PLUS */
static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = {
	{ 0xa4000000, 0, 16, /* IRLMSK */
	  { TP, PCI_INTA_SLOT, PCI_INTB_RTL8139,
	    PCI_INTC_PCI1520, PCI_INTD_RTL8139,
	    SM501, CF_IDE, CF_CD, SDCARD, KEY,
	    RTC_A, RTC_T, 0, 0, 0, EXT } },
};

/* IRLn to IRQ table for R2D-PLUS */
static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = {
	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
	IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T,
	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
	IRQ_TP,
};

static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
			 NULL, NULL, mask_registers_r2d_plus, NULL, NULL);

#endif /* CONFIG_RTS7751R2D_PLUS */

static unsigned char irl2irq[R2D_NR_IRL];

int rts7751r2d_irq_demux(int irq)
{
	if (irq >= R2D_NR_IRL || !irl2irq[irq])
		return irq;

	return irl2irq[irq];
}

/*
 * Initialize IRQ setting
 */
void __init init_rts7751r2d_IRQ(void)
{
	struct intc_desc *d;

	switch (ctrl_inw(PA_VERREG) & 0xf0) {
#ifdef CONFIG_RTS7751R2D_PLUS
	case 0x10:
		printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
		d = &intc_desc_r2d_plus;
		memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL);
		break;
#endif
#ifdef CONFIG_RTS7751R2D_1
	case 0x00: /* according to manual */
	case 0x30: /* in reality */
		printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
		d = &intc_desc_r2d_1;
		memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
		break;
#endif
	default:
		printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
		       ctrl_inw(PA_VERREG));
		return;
	}

	register_intc_controller(d);
#ifdef CONFIG_MFD_SM501
	setup_voyagergx_irq();
#endif
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/sh/boards/renesas/rts7751r2d/irq.c
	3	*
2eeec856	4	* Copyright (C) 2007 Magnus Damm
1da177e4 LT	5	* Copyright (C) 2000 Kazumoto Kojima
1da177e4 LT	6	*
2eeec856	7	* Renesas Technology Sales RTS7751R2D Support, R2D-PLUS and R2D-1.
1da177e4 LT	8	*
	9	* Modified for RTS7751R2D by
	10	* Atom Create Engineering Co., Ltd. 2002.
	11	*/
1da177e4 LT	12	#include <linux/init.h>
1da177e4 LT	13	#include <linux/irq.h>
9c57548f	14	#include <linux/interrupt.h>
082c44d2	15	#include <linux/io.h>
48180cab	16	#include <asm/voyagergx.h>
082c44d2	17	#include <asm/rts7751r2d.h>
1da177e4	18
2eeec856	19	#define R2D_NR_IRL 13
1da177e4	20
2eeec856 MD	21	enum {
2eeec856 MD	22	UNUSED = 0,
1da177e4	23
2eeec856 MD	24	/* board specific interrupt sources (R2D-1 and R2D-PLUS) */
	25	EXT, /* EXT_INT0-3 */
	26	RTC_T, RTC_A, /* Real Time Clock */
	27	AX88796, /* Ethernet controller (R2D-1 board) */
	28	KEY, /* Key input (R2D-PLUS board) */
	29	SDCARD, /* SD Card */
	30	CF_CD, CF_IDE, /* CF Card Detect + CF IDE */
	31	SM501, /* SM501 aka Voyager */
	32	PCI_INTD_RTL8139, /* Ethernet controller */
	33	PCI_INTC_PCI1520, /* Cardbus/PCMCIA bridge */
	34	PCI_INTB_RTL8139, /* Ethernet controller with HUB (R2D-PLUS board) */
	35	PCI_INTB_SLOT, /* PCI Slot 3.3v (R2D-1 board) */
	36	PCI_INTA_SLOT, /* PCI Slot 3.3v */
	37	TP, /* Touch Panel */
	38	};
	39
	40	#ifdef CONFIG_RTS7751R2D_1
	41
	42	/* Vectors for R2D-1 */
	43	static struct intc_vect vectors_r2d_1[] __initdata = {
	44	INTC_IRQ(EXT, IRQ_EXT),
	45	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
	46	INTC_IRQ(AX88796, IRQ_AX88796), INTC_IRQ(SDCARD, IRQ_SDCARD),
	47	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE), /* ng */
	48	INTC_IRQ(SM501, IRQ_VOYAGER),
	49	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
	50	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
	51	INTC_IRQ(PCI_INTB_SLOT, IRQ_PCI_INTB),
	52	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
	53	INTC_IRQ(TP, IRQ_TP),
	54	};
	55
	56	/* IRLMSK mask register layout for R2D-1 */
	57	static struct intc_mask_reg mask_registers_r2d_1[] __initdata = {
	58	{ 0xa4000000, 0, 16, /* IRLMSK */
	59	{ TP, PCI_INTA_SLOT, PCI_INTB_SLOT,
	60	PCI_INTC_PCI1520, PCI_INTD_RTL8139,
	61	SM501, CF_IDE, CF_CD, SDCARD, AX88796,
	62	RTC_A, RTC_T, 0, 0, 0, EXT } },
	63	};
	64
	65	/* IRLn to IRQ table for R2D-1 */
	66	static unsigned char irl2irq_r2d_1[R2D_NR_IRL] __initdata = {
	67	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
	68	IRQ_VOYAGER, IRQ_AX88796, IRQ_RTC_A, IRQ_RTC_T,
	69	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
	70	IRQ_TP,
	71	};
	72
5c37e025 MD	73	static DECLARE_INTC_DESC(intc_desc_r2d_1, "r2d-1", vectors_r2d_1,
5c37e025 MD	74	NULL, NULL, mask_registers_r2d_1, NULL, NULL);
2eeec856 MD	75
	76	#endif /* CONFIG_RTS7751R2D_1 */
	77
	78	#ifdef CONFIG_RTS7751R2D_PLUS
	79
	80	/* Vectors for R2D-PLUS */
	81	static struct intc_vect vectors_r2d_plus[] __initdata = {
	82	INTC_IRQ(EXT, IRQ_EXT),
	83	INTC_IRQ(RTC_T, IRQ_RTC_T), INTC_IRQ(RTC_A, IRQ_RTC_A),
	84	INTC_IRQ(KEY, IRQ_KEY), INTC_IRQ(SDCARD, IRQ_SDCARD),
	85	INTC_IRQ(CF_CD, IRQ_CF_CD), INTC_IRQ(CF_IDE, IRQ_CF_IDE),
	86	INTC_IRQ(SM501, IRQ_VOYAGER),
	87	INTC_IRQ(PCI_INTD_RTL8139, IRQ_PCI_INTD),
	88	INTC_IRQ(PCI_INTC_PCI1520, IRQ_PCI_INTC),
	89	INTC_IRQ(PCI_INTB_RTL8139, IRQ_PCI_INTB),
	90	INTC_IRQ(PCI_INTA_SLOT, IRQ_PCI_INTA),
	91	INTC_IRQ(TP, IRQ_TP),
	92	};
	93
	94	/* IRLMSK mask register layout for R2D-PLUS */
	95	static struct intc_mask_reg mask_registers_r2d_plus[] __initdata = {
	96	{ 0xa4000000, 0, 16, /* IRLMSK */
	97	{ TP, PCI_INTA_SLOT, PCI_INTB_RTL8139,
	98	PCI_INTC_PCI1520, PCI_INTD_RTL8139,
	99	SM501, CF_IDE, CF_CD, SDCARD, KEY,
	100	RTC_A, RTC_T, 0, 0, 0, EXT } },
	101	};
	102
	103	/* IRLn to IRQ table for R2D-PLUS */
	104	static unsigned char irl2irq_r2d_plus[R2D_NR_IRL] __initdata = {
	105	IRQ_PCI_INTD, IRQ_CF_IDE, IRQ_CF_CD, IRQ_PCI_INTC,
	106	IRQ_VOYAGER, IRQ_KEY, IRQ_RTC_A, IRQ_RTC_T,
	107	IRQ_SDCARD, IRQ_PCI_INTA, IRQ_PCI_INTB, IRQ_EXT,
	108	IRQ_TP,
	109	};
	110
5c37e025 MD	111	static DECLARE_INTC_DESC(intc_desc_r2d_plus, "r2d-plus", vectors_r2d_plus,
5c37e025 MD	112	NULL, NULL, mask_registers_r2d_plus, NULL, NULL);
2eeec856 MD	113
	114	#endif /* CONFIG_RTS7751R2D_PLUS */
	115
	116	static unsigned char irl2irq[R2D_NR_IRL];
1da177e4 LT	117
	118	int rts7751r2d_irq_demux(int irq)
	119	{
2eeec856 MD	120	if (irq >= R2D_NR_IRL \|\| !irl2irq[irq])
2eeec856 MD	121	return irq;
1da177e4	122
2eeec856 MD	123	return irl2irq[irq];
2eeec856 MD	124	}
1da177e4	125
1da177e4 LT	126	/*
	127	* Initialize IRQ setting
	128	*/
	129	void __init init_rts7751r2d_IRQ(void)
	130	{
2eeec856 MD	131	struct intc_desc *d;
2eeec856 MD	132
9cbf3be6	133	switch (ctrl_inw(PA_VERREG) & 0xf0) {
2eeec856 MD	134	#ifdef CONFIG_RTS7751R2D_PLUS
	135	case 0x10:
	136	printk(KERN_INFO "Using R2D-PLUS interrupt controller.\n");
	137	d = &intc_desc_r2d_plus;
	138	memcpy(irl2irq, irl2irq_r2d_plus, R2D_NR_IRL);
	139	break;
	140	#endif
	141	#ifdef CONFIG_RTS7751R2D_1
9cbf3be6 MD	142	case 0x00: /* according to manual */
9cbf3be6 MD	143	case 0x30: /* in reality */
2eeec856 MD	144	printk(KERN_INFO "Using R2D-1 interrupt controller.\n");
	145	d = &intc_desc_r2d_1;
	146	memcpy(irl2irq, irl2irq_r2d_1, R2D_NR_IRL);
	147	break;
	148	#endif
	149	default:
9cbf3be6 MD	150	printk(KERN_INFO "Unknown R2D interrupt controller 0x%04x\n",
9cbf3be6 MD	151	ctrl_inw(PA_VERREG));
2eeec856	152	return;
9c57548f	153	}
1da177e4	154
2eeec856	155	register_intc_controller(d);
f8b40d8c	156	#ifdef CONFIG_MFD_SM501
1da177e4	157	setup_voyagergx_irq();
f8b40d8c	158	#endif
1da177e4	159	}