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

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 *  linux/arch/m32r/platforms/m32104ut/setup.c
   4 *
   5 *  Setup routines for M32104UT Board
   6 *
   7 *  Copyright (c) 2002-2005  Hiroyuki Kondo, Hirokazu Takata,
   8 *                           Hitoshi Yamamoto, Mamoru Sakugawa,
   9 *                           Naoto Sugai, Hayato Fujiwara
  10 */
  11
  12#include <linux/irq.h>
  13#include <linux/kernel.h>
  14#include <linux/init.h>
  15#include <linux/device.h>
  16
  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_m32104ut_irq(struct irq_data *data)
  43{
  44        disable_m32104ut_irq(data->irq);
  45}
  46
  47static void unmask_m32104ut_irq(struct irq_data *data)
  48{
  49        enable_m32104ut_irq(data->irq);
  50}
  51
  52static void shutdown_m32104ut_irq(struct irq_data *data)
  53{
  54        unsigned int irq = data->irq;
  55        unsigned long port = irq2port(irq);
  56
  57        outl(M32R_ICUCR_ILEVEL7, port);
  58}
  59
  60static struct irq_chip m32104ut_irq_type =
  61{
  62        .name           = "M32104UT-IRQ",
  63        .irq_shutdown   = shutdown_m32104ut_irq,
  64        .irq_unmask     = unmask_m32104ut_irq,
  65        .irq_mask       = mask_m32104ut_irq,
  66};
  67
  68void __init init_IRQ(void)
  69{
  70        static int once = 0;
  71
  72        if (once)
  73                return;
  74        else
  75                once++;
  76
  77#if defined(CONFIG_SMC91X)
  78        /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
  79        irq_set_chip_and_handler(M32R_IRQ_INT0, &m32104ut_irq_type,
  80                                 handle_level_irq);
  81        /* "H" level sense */
  82        cu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11;
  83        disable_m32104ut_irq(M32R_IRQ_INT0);
  84#endif  /* CONFIG_SMC91X */
  85
  86        /* MFT2 : system timer */
  87        irq_set_chip_and_handler(M32R_IRQ_MFT2, &m32104ut_irq_type,
  88                                 handle_level_irq);
  89        icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
  90        disable_m32104ut_irq(M32R_IRQ_MFT2);
  91
  92#ifdef CONFIG_SERIAL_M32R_SIO
  93        /* SIO0_R : uart receive data */
  94        irq_set_chip_and_handler(M32R_IRQ_SIO0_R, &m32104ut_irq_type,
  95                                 handle_level_irq);
  96        icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
  97        disable_m32104ut_irq(M32R_IRQ_SIO0_R);
  98
  99        /* SIO0_S : uart send data */
 100        irq_set_chip_and_handler(M32R_IRQ_SIO0_S, &m32104ut_irq_type,
 101                                 handle_level_irq);
 102        icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
 103        disable_m32104ut_irq(M32R_IRQ_SIO0_S);
 104#endif /* CONFIG_SERIAL_M32R_SIO */
 105}
 106
 107#if defined(CONFIG_SMC91X)
 108
 109#define LAN_IOSTART     0x300
 110#define LAN_IOEND       0x320
 111static struct resource smc91x_resources[] = {
 112        [0] = {
 113                .start  = (LAN_IOSTART),
 114                .end    = (LAN_IOEND),
 115                .flags  = IORESOURCE_MEM,
 116        },
 117        [1] = {
 118                .start  = M32R_IRQ_INT0,
 119                .end    = M32R_IRQ_INT0,
 120                .flags  = IORESOURCE_IRQ,
 121        }
 122};
 123
 124static struct platform_device smc91x_device = {
 125        .name           = "smc91x",
 126        .id             = 0,
 127        .num_resources  = ARRAY_SIZE(smc91x_resources),
 128        .resource       = smc91x_resources,
 129};
 130#endif
 131
 132static int __init platform_init(void)
 133{
 134#if defined(CONFIG_SMC91X)
 135        platform_device_register(&smc91x_device);
 136#endif
 137        return 0;
 138}
 139arch_initcall(platform_init);
 140