LXR linux/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);
 156