kernel/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/m32r.h>
  17 #include <asm/io.h>
  18
  19 #define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
  20
  21 icu_data_t icu_data[NR_IRQS];
  22
  23 static void disable_m32104ut_irq(unsigned int irq)
  24 {
  25         unsigned long port, data;
  26
  27         port = irq2port(irq);
  28         data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
  29         outl(data, port);
  30 }
  31
  32 static void enable_m32104ut_irq(unsigned int irq)
  33 {
  34         unsigned long port, data;
  35
  36         port = irq2port(irq);
  37         data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
  38         outl(data, port);
  39 }
  40
  41 static void mask_m32104ut_irq(struct irq_data *data)
  42 {
  43         disable_m32104ut_irq(data->irq);
  44 }
  45
  46 static void unmask_m32104ut_irq(struct irq_data *data)
  47 {
  48         enable_m32104ut_irq(data->irq);
  49 }
  50
  51 static void shutdown_m32104ut_irq(struct irq_data *data)
  52 {
  53         unsigned int irq = data->irq;
  54         unsigned long port = irq2port(irq);
  55
  56         outl(M32R_ICUCR_ILEVEL7, port);
  57 }
  58
  59 static struct irq_chip m32104ut_irq_type =
  60 {
  61         .name           = "M32104UT-IRQ",
  62         .irq_shutdown   = shutdown_m32104ut_irq,
  63         .irq_unmask     = unmask_m32104ut_irq,
  64         .irq_mask       = mask_m32104ut_irq,
  65 };
  66
  67 void __init init_IRQ(void)
  68 {
  69         static int once = 0;
  70
  71         if (once)
  72                 return;
  73         else
  74                 once++;
  75
  76 #if defined(CONFIG_SMC91X)
  77         /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
  78         irq_set_chip_and_handler(M32R_IRQ_INT0, &m32104ut_irq_type,
  79                                  handle_level_irq);
  80         /* "H" level sense */
  81         cu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11;
  82         disable_m32104ut_irq(M32R_IRQ_INT0);
  83 #endif  /* CONFIG_SMC91X */
  84
  85         /* MFT2 : system timer */
  86         irq_set_chip_and_handler(M32R_IRQ_MFT2, &m32104ut_irq_type,
  87                                  handle_level_irq);
  88         icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
  89         disable_m32104ut_irq(M32R_IRQ_MFT2);
  90
  91 #ifdef CONFIG_SERIAL_M32R_SIO
  92         /* SIO0_R : uart receive data */
  93         irq_set_chip_and_handler(M32R_IRQ_SIO0_R, &m32104ut_irq_type,
  94                                  handle_level_irq);
  95         icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
  96         disable_m32104ut_irq(M32R_IRQ_SIO0_R);
  97
  98         /* SIO0_S : uart send data */
  99         irq_set_chip_and_handler(M32R_IRQ_SIO0_S, &m32104ut_irq_type,
 100                                  handle_level_irq);
 101         icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
 102         disable_m32104ut_irq(M32R_IRQ_SIO0_S);
 103 #endif /* CONFIG_SERIAL_M32R_SIO */
 104 }
 105
 106 #if defined(CONFIG_SMC91X)
 107
 108 #define LAN_IOSTART     0x300
 109 #define LAN_IOEND       0x320
 110 static struct resource smc91x_resources[] = {
 111         [0] = {
 112                 .start  = (LAN_IOSTART),
 113                 .end    = (LAN_IOEND),
 114                 .flags  = IORESOURCE_MEM,
 115         },
 116         [1] = {
 117                 .start  = M32R_IRQ_INT0,
 118                 .end    = M32R_IRQ_INT0,
 119                 .flags  = IORESOURCE_IRQ,
 120         }
 121 };
 122
 123 static struct platform_device smc91x_device = {
 124         .name           = "smc91x",
 125         .id             = 0,
 126         .num_resources  = ARRAY_SIZE(smc91x_resources),
 127         .resource       = smc91x_resources,
 128 };
 129 #endif
 130
 131 static int __init platform_init(void)
 132 {
 133 #if defined(CONFIG_SMC91X)
 134         platform_device_register(&smc91x_device);
 135 #endif
 136         return 0;
 137 }
 138 arch_initcall(platform_init);