/arch/m32r/platforms/m32104ut/setup.c

  1/*
  2 *  linux/arch/m32r/platforms/m32104ut/setup.c
  3 *
  4 *  Setup routines for M32104UT Board
  5 *
  6 *  Copyright (c) 2002-2005  Hiroyuki Kondo, Hirokazu Takata,
  7 *                           Hitoshi Yamamoto, Mamoru Sakugawa,
  8 *                           Naoto Sugai, Hayato Fujiwara
  9 */
 10
 11#include <linux/irq.h>
 12#include <linux/kernel.h>
 13#include <linux/init.h>
 14#include <linux/device.h>
 15
 16#include <asm/system.h>
 17#include <asm/m32r.h>
 18#include <asm/io.h>
 19
 20#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
 21
 22icu_data_t icu_data[NR_IRQS];
 23
 24static void disable_m32104ut_irq(unsigned int irq)
 25{
 26	unsigned long port, data;
 27
 28	port = irq2port(irq);
 29	data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
 30	outl(data, port);
 31}
 32
 33static void enable_m32104ut_irq(unsigned int irq)
 34{
 35	unsigned long port, data;
 36
 37	port = irq2port(irq);
 38	data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
 39	outl(data, port);
 40}
 41
 42static void mask_and_ack_m32104ut(unsigned int irq)
 43{
 44	disable_m32104ut_irq(irq);
 45}
 46
 47static void end_m32104ut_irq(unsigned int irq)
 48{
 49	enable_m32104ut_irq(irq);
 50}
 51
 52static unsigned int startup_m32104ut_irq(unsigned int irq)
 53{
 54	enable_m32104ut_irq(irq);
 55	return (0);
 56}
 57
 58static void shutdown_m32104ut_irq(unsigned int irq)
 59{
 60	unsigned long port;
 61
 62	port = irq2port(irq);
 63	outl(M32R_ICUCR_ILEVEL7, port);
 64}
 65
 66static struct irq_chip m32104ut_irq_type =
 67{
 68	.typename = "M32104UT-IRQ",
 69	.startup = startup_m32104ut_irq,
 70	.shutdown = shutdown_m32104ut_irq,
 71	.enable = enable_m32104ut_irq,
 72	.disable = disable_m32104ut_irq,
 73	.ack = mask_and_ack_m32104ut,
 74	.end = end_m32104ut_irq
 75};
 76
 77void __init init_IRQ(void)
 78{
 79	static int once = 0;
 80
 81	if (once)
 82		return;
 83	else
 84		once++;
 85
 86#if defined(CONFIG_SMC91X)
 87	/* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
 88	irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
 89	irq_desc[M32R_IRQ_INT0].chip = &m32104ut_irq_type;
 90	irq_desc[M32R_IRQ_INT0].action = 0;
 91	irq_desc[M32R_IRQ_INT0].depth = 1;
 92	icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
 93	disable_m32104ut_irq(M32R_IRQ_INT0);
 94#endif  /* CONFIG_SMC91X */
 95
 96	/* MFT2 : system timer */
 97	irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
 98	irq_desc[M32R_IRQ_MFT2].chip = &m32104ut_irq_type;
 99	irq_desc[M32R_IRQ_MFT2].action = 0;
100	irq_desc[M32R_IRQ_MFT2].depth = 1;
101	icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
102	disable_m32104ut_irq(M32R_IRQ_MFT2);
103
104#ifdef CONFIG_SERIAL_M32R_SIO
105	/* SIO0_R : uart receive data */
106	irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
107	irq_desc[M32R_IRQ_SIO0_R].chip = &m32104ut_irq_type;
108	irq_desc[M32R_IRQ_SIO0_R].action = 0;
109	irq_desc[M32R_IRQ_SIO0_R].depth = 1;
110	icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
111	disable_m32104ut_irq(M32R_IRQ_SIO0_R);
112
113	/* SIO0_S : uart send data */
114	irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
115	irq_desc[M32R_IRQ_SIO0_S].chip = &m32104ut_irq_type;
116	irq_desc[M32R_IRQ_SIO0_S].action = 0;
117	irq_desc[M32R_IRQ_SIO0_S].depth = 1;
118	icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
119	disable_m32104ut_irq(M32R_IRQ_SIO0_S);
120#endif /* CONFIG_SERIAL_M32R_SIO */
121}
122
123#if defined(CONFIG_SMC91X)
124
125#define LAN_IOSTART     0x300
126#define LAN_IOEND       0x320
127static struct resource smc91x_resources[] = {
128	[0] = {
129		.start  = (LAN_IOSTART),
130		.end    = (LAN_IOEND),
131		.flags  = IORESOURCE_MEM,
132	},
133	[1] = {
134		.start  = M32R_IRQ_INT0,
135		.end    = M32R_IRQ_INT0,
136		.flags  = IORESOURCE_IRQ,
137	}
138};
139
140static struct platform_device smc91x_device = {
141	.name		= "smc91x",
142	.id		= 0,
143	.num_resources  = ARRAY_SIZE(smc91x_resources),
144	.resource       = smc91x_resources,
145};
146#endif
147
148static int __init platform_init(void)
149{
150#if defined(CONFIG_SMC91X)
151	platform_device_register(&smc91x_device);
152#endif
153	return 0;
154}
155arch_initcall(platform_init);