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_m32104ut_irq(struct irq_data *data)
  43 {
  44         disable_m32104ut_irq(data->irq);
  45 }
  46
  47 static void unmask_m32104ut_irq(struct irq_data *data)
  48 {
  49         enable_m32104ut_irq(data->irq);
  50 }
  51
  52 static 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
  60 static 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
  68 void __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
 111 static 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
 124 static 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
 132 static int __init platform_init(void)
 133 {
 134 #if defined(CONFIG_SMC91X)
 135         platform_device_register(&smc91x_device);
 136 #endif
 137         return 0;
 138 }
 139 arch_initcall(platform_init);