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 #ifndef CONFIG_SMP
  24 typedef struct {
  25         unsigned long icucr;  /* ICU Control Register */
  26 } icu_data_t;
  27 #endif /* CONFIG_SMP */
  28
  29 icu_data_t icu_data[NR_IRQS];
  30
  31 static void disable_m32104ut_irq(unsigned int irq)
  32 {
  33         unsigned long port, data;
  34
  35         port = irq2port(irq);
  36         data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
  37         outl(data, port);
  38 }
  39
  40 static void enable_m32104ut_irq(unsigned int irq)
  41 {
  42         unsigned long port, data;
  43
  44         port = irq2port(irq);
  45         data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
  46         outl(data, port);
  47 }
  48
  49 static void mask_and_ack_m32104ut(unsigned int irq)
  50 {
  51         disable_m32104ut_irq(irq);
  52 }
  53
  54 static void end_m32104ut_irq(unsigned int irq)
  55 {
  56         enable_m32104ut_irq(irq);
  57 }
  58
  59 static unsigned int startup_m32104ut_irq(unsigned int irq)
  60 {
  61         enable_m32104ut_irq(irq);
  62         return (0);
  63 }
  64
  65 static void shutdown_m32104ut_irq(unsigned int irq)
  66 {
  67         unsigned long port;
  68
  69         port = irq2port(irq);
  70         outl(M32R_ICUCR_ILEVEL7, port);
  71 }
  72
  73 static struct hw_interrupt_type m32104ut_irq_type =
  74 {
  75         .typename = "M32104UT-IRQ",
  76         .startup = startup_m32104ut_irq,
  77         .shutdown = shutdown_m32104ut_irq,
  78         .enable = enable_m32104ut_irq,
  79         .disable = disable_m32104ut_irq,
  80         .ack = mask_and_ack_m32104ut,
  81         .end = end_m32104ut_irq
  82 };
  83
  84 void __init init_IRQ(void)
  85 {
  86         static int once = 0;
  87
  88         if (once)
  89                 return;
  90         else
  91                 once++;
  92
  93 #if defined(CONFIG_SMC91X)
  94         /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
  95         irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
  96         irq_desc[M32R_IRQ_INT0].handler = &m32104ut_irq_type;
  97         irq_desc[M32R_IRQ_INT0].action = 0;
  98         irq_desc[M32R_IRQ_INT0].depth = 1;
  99         icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
 100         disable_m32104ut_irq(M32R_IRQ_INT0);
 101 #endif  /* CONFIG_SMC91X */
 102
 103         /* MFT2 : system timer */
 104         irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
 105         irq_desc[M32R_IRQ_MFT2].handler = &m32104ut_irq_type;
 106         irq_desc[M32R_IRQ_MFT2].action = 0;
 107         irq_desc[M32R_IRQ_MFT2].depth = 1;
 108         icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
 109         disable_m32104ut_irq(M32R_IRQ_MFT2);
 110
 111 #ifdef CONFIG_SERIAL_M32R_SIO
 112         /* SIO0_R : uart receive data */
 113         irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
 114         irq_desc[M32R_IRQ_SIO0_R].handler = &m32104ut_irq_type;
 115         irq_desc[M32R_IRQ_SIO0_R].action = 0;
 116         irq_desc[M32R_IRQ_SIO0_R].depth = 1;
 117         icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
 118         disable_m32104ut_irq(M32R_IRQ_SIO0_R);
 119
 120         /* SIO0_S : uart send data */
 121         irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
 122         irq_desc[M32R_IRQ_SIO0_S].handler = &m32104ut_irq_type;
 123         irq_desc[M32R_IRQ_SIO0_S].action = 0;
 124         irq_desc[M32R_IRQ_SIO0_S].depth = 1;
 125         icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
 126         disable_m32104ut_irq(M32R_IRQ_SIO0_S);
 127 #endif /* CONFIG_SERIAL_M32R_SIO */
 128 }
 129
 130 #if defined(CONFIG_SMC91X)
 131
 132 #define LAN_IOSTART     0x300
 133 #define LAN_IOEND       0x320
 134 static struct resource smc91x_resources[] = {
 135         [0] = {
 136                 .start  = (LAN_IOSTART),
 137                 .end    = (LAN_IOEND),
 138                 .flags  = IORESOURCE_MEM,
 139         },
 140         [1] = {
 141                 .start  = M32R_IRQ_INT0,
 142                 .end    = M32R_IRQ_INT0,
 143                 .flags  = IORESOURCE_IRQ,
 144         }
 145 };
 146
 147 static struct platform_device smc91x_device = {
 148         .name           = "smc91x",
 149         .id             = 0,
 150         .num_resources  = ARRAY_SIZE(smc91x_resources),
 151         .resource       = smc91x_resources,
 152 };
 153 #endif
 154
 155 static int __init platform_init(void)
 156 {
 157 #if defined(CONFIG_SMC91X)
 158         platform_device_register(&smc91x_device);
 159 #endif
 160         return 0;
 161 }
 162 arch_initcall(platform_init);