arch/m32r/kernel/setup_m32104ut.c

   1 /*
   2  *  linux/arch/m32r/kernel/setup_m32104ut.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/config.h>
  12 #include <linux/irq.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/device.h>
  16
  17 #include <asm/system.h>
  18 #include <asm/m32r.h>
  19 #include <asm/io.h>
  20
  21 #define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
  22
  23 icu_data_t icu_data[NR_IRQS];
  24
  25 static void disable_m32104ut_irq(unsigned int irq)
  26 {
  27         unsigned long port, data;
  28
  29         port = irq2port(irq);
  30         data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
  31         outl(data, port);
  32 }
  33
  34 static void enable_m32104ut_irq(unsigned int irq)
  35 {
  36         unsigned long port, data;
  37
  38         port = irq2port(irq);
  39         data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
  40         outl(data, port);
  41 }
  42
  43 static void mask_and_ack_m32104ut(unsigned int irq)
  44 {
  45         disable_m32104ut_irq(irq);
  46 }
  47
  48 static void end_m32104ut_irq(unsigned int irq)
  49 {
  50         enable_m32104ut_irq(irq);
  51 }
  52
  53 static unsigned int startup_m32104ut_irq(unsigned int irq)
  54 {
  55         enable_m32104ut_irq(irq);
  56         return (0);
  57 }
  58
  59 static void shutdown_m32104ut_irq(unsigned int irq)
  60 {
  61         unsigned long port;
  62
  63         port = irq2port(irq);
  64         outl(M32R_ICUCR_ILEVEL7, port);
  65 }
  66
  67 static struct hw_interrupt_type m32104ut_irq_type =
  68 {
  69         .typename = "M32104UT-IRQ",
  70         .startup = startup_m32104ut_irq,
  71         .shutdown = shutdown_m32104ut_irq,
  72         .enable = enable_m32104ut_irq,
  73         .disable = disable_m32104ut_irq,
  74         .ack = mask_and_ack_m32104ut,
  75         .end = end_m32104ut_irq
  76 };
  77
  78 void __init init_IRQ(void)
  79 {
  80         static int once = 0;
  81
  82         if (once)
  83                 return;
  84         else
  85                 once++;
  86
  87 #if defined(CONFIG_SMC91X)
  88         /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
  89         irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
  90         irq_desc[M32R_IRQ_INT0].handler = &m32104ut_irq_type;
  91         irq_desc[M32R_IRQ_INT0].action = 0;
  92         irq_desc[M32R_IRQ_INT0].depth = 1;
  93         icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
  94         disable_m32104ut_irq(M32R_IRQ_INT0);
  95 #endif  /* CONFIG_SMC91X */
  96
  97         /* MFT2 : system timer */
  98         irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
  99         irq_desc[M32R_IRQ_MFT2].handler = &m32104ut_irq_type;
 100         irq_desc[M32R_IRQ_MFT2].action = 0;
 101         irq_desc[M32R_IRQ_MFT2].depth = 1;
 102         icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
 103         disable_m32104ut_irq(M32R_IRQ_MFT2);
 104
 105 #ifdef CONFIG_SERIAL_M32R_SIO
 106         /* SIO0_R : uart receive data */
 107         irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
 108         irq_desc[M32R_IRQ_SIO0_R].handler = &m32104ut_irq_type;
 109         irq_desc[M32R_IRQ_SIO0_R].action = 0;
 110         irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 111         icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
 112         disable_m32104ut_irq(M32R_IRQ_SIO0_R);
 113
 114         /* SIO0_S : uart send data */
 115         irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
 116         irq_desc[M32R_IRQ_SIO0_S].handler = &m32104ut_irq_type;
 117         irq_desc[M32R_IRQ_SIO0_S].action = 0;
 118         irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 119         icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
 120         disable_m32104ut_irq(M32R_IRQ_SIO0_S);
 121 #endif /* CONFIG_SERIAL_M32R_SIO */
 122 }
 123
 124 #if defined(CONFIG_SMC91X)
 125
 126 #define LAN_IOSTART     0x300
 127 #define LAN_IOEND       0x320
 128 static struct resource smc91x_resources[] = {
 129         [0] = {
 130                 .start  = (LAN_IOSTART),
 131                 .end    = (LAN_IOEND),
 132                 .flags  = IORESOURCE_MEM,
 133         },
 134         [1] = {
 135                 .start  = M32R_IRQ_INT0,
 136                 .end    = M32R_IRQ_INT0,
 137                 .flags  = IORESOURCE_IRQ,
 138         }
 139 };
 140
 141 static struct platform_device smc91x_device = {
 142         .name           = "smc91x",
 143         .id             = 0,
 144         .num_resources  = ARRAY_SIZE(smc91x_resources),
 145         .resource       = smc91x_resources,
 146 };
 147 #endif
 148
 149 static int __init platform_init(void)
 150 {
 151 #if defined(CONFIG_SMC91X)
 152         platform_device_register(&smc91x_device);
 153 #endif
 154         return 0;
 155 }
 156 arch_initcall(platform_init);