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
  22 icu_data_t icu_data[NR_IRQS];
  23
  24 static 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
  33 static 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
  42 static void mask_and_ack_m32104ut(unsigned int irq)
  43 {
  44         disable_m32104ut_irq(irq);
  45 }
  46
  47 static void end_m32104ut_irq(unsigned int irq)
  48 {
  49         enable_m32104ut_irq(irq);
  50 }
  51
  52 static unsigned int startup_m32104ut_irq(unsigned int irq)
  53 {
  54         enable_m32104ut_irq(irq);
  55         return (0);
  56 }
  57
  58 static 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
  66 static 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
  77 void __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
 127 static 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
 140 static 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
 148 static int __init platform_init(void)
 149 {
 150 #if defined(CONFIG_SMC91X)
 151         platform_device_register(&smc91x_device);
 152 #endif
 153         return 0;
 154 }
 155 arch_initcall(platform_init);