arch/sh/boards/board-polaris.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
   4  *
   5  * Polaris-specific resource declaration
   6  *
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/irq.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/regulator/fixed.h>
  14 #include <linux/regulator/machine.h>
  15 #include <linux/smsc911x.h>
  16 #include <linux/io.h>
  17 #include <asm/irq.h>
  18 #include <asm/machvec.h>
  19 #include <asm/heartbeat.h>
  20 #include <cpu/gpio.h>
  21 #include <mach-se/mach/se.h>
  22
  23 #define BCR2            (0xFFFFFF62)
  24 #define WCR2            (0xFFFFFF66)
  25 #define AREA5_WAIT_CTRL (0x1C00)
  26 #define WAIT_STATES_10  (0x7)
  27
  28 /* Dummy supplies, where voltage doesn't matter */
  29 static struct regulator_consumer_supply dummy_supplies[] = {
  30         REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
  31         REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
  32 };
  33
  34 static struct resource smsc911x_resources[] = {
  35         [0] = {
  36                 .name           = "smsc911x-memory",
  37                 .start          = PA_EXT5,
  38                 .end            = PA_EXT5 + 0x1fff,
  39                 .flags          = IORESOURCE_MEM,
  40         },
  41         [1] = {
  42                 .name           = "smsc911x-irq",
  43                 .start          = IRQ0_IRQ,
  44                 .end            = IRQ0_IRQ,
  45                 .flags          = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct smsc911x_platform_config smsc911x_config = {
  50         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  51         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  52         .flags          = SMSC911X_USE_32BIT,
  53         .phy_interface  = PHY_INTERFACE_MODE_MII,
  54 };
  55
  56 static struct platform_device smsc911x_device = {
  57         .name           = "smsc911x",
  58         .id             = 0,
  59         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  60         .resource       = smsc911x_resources,
  61         .dev = {
  62                 .platform_data = &smsc911x_config,
  63         },
  64 };
  65
  66 static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
  67
  68 static struct heartbeat_data heartbeat_data = {
  69         .bit_pos        = heartbeat_bit_pos,
  70         .nr_bits        = ARRAY_SIZE(heartbeat_bit_pos),
  71 };
  72
  73 static struct resource heartbeat_resource = {
  74         .start  = PORT_PCDR,
  75         .end    = PORT_PCDR,
  76         .flags  = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
  77 };
  78
  79 static struct platform_device heartbeat_device = {
  80         .name           = "heartbeat",
  81         .id             = -1,
  82         .dev    = {
  83                 .platform_data  = &heartbeat_data,
  84         },
  85         .num_resources  = 1,
  86         .resource       = &heartbeat_resource,
  87 };
  88
  89 static struct platform_device *polaris_devices[] __initdata = {
  90         &smsc911x_device,
  91         &heartbeat_device,
  92 };
  93
  94 static int __init polaris_initialise(void)
  95 {
  96         u16 wcr, bcr_mask;
  97
  98         printk(KERN_INFO "Configuring Polaris external bus\n");
  99
 100         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 101
 102         /* Configure area 5 with 2 wait states */
 103         wcr = __raw_readw(WCR2);
 104         wcr &= (~AREA5_WAIT_CTRL);
 105         wcr |= (WAIT_STATES_10 << 10);
 106         __raw_writew(wcr, WCR2);
 107
 108         /* Configure area 5 for 32-bit access */
 109         bcr_mask = __raw_readw(BCR2);
 110         bcr_mask |= 1 << 10;
 111         __raw_writew(bcr_mask, BCR2);
 112
 113         return platform_add_devices(polaris_devices,
 114                                     ARRAY_SIZE(polaris_devices));
 115 }
 116 arch_initcall(polaris_initialise);
 117
 118 static struct ipr_data ipr_irq_table[] = {
 119         /* External IRQs */
 120         { IRQ0_IRQ, 0,  0,  1, },       /* IRQ0 */
 121         { IRQ1_IRQ, 0,  4,  1, },       /* IRQ1 */
 122 };
 123
 124 static unsigned long ipr_offsets[] = {
 125         INTC_IPRC
 126 };
 127
 128 static struct ipr_desc ipr_irq_desc = {
 129         .ipr_offsets    = ipr_offsets,
 130         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
 131
 132         .ipr_data       = ipr_irq_table,
 133         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
 134         .chip = {
 135                 .name   = "sh7709-ext",
 136         },
 137 };
 138
 139 static void __init init_polaris_irq(void)
 140 {
 141         /* Disable all interrupts */
 142         __raw_writew(0, BCR_ILCRA);
 143         __raw_writew(0, BCR_ILCRB);
 144         __raw_writew(0, BCR_ILCRC);
 145         __raw_writew(0, BCR_ILCRD);
 146         __raw_writew(0, BCR_ILCRE);
 147         __raw_writew(0, BCR_ILCRF);
 148         __raw_writew(0, BCR_ILCRG);
 149
 150         register_ipr_controller(&ipr_irq_desc);
 151 }
 152
 153 static struct sh_machine_vector mv_polaris __initmv = {
 154         .mv_name                = "Polaris",
 155         .mv_init_irq            = init_polaris_irq,
 156 };