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