arch/mips/mti-sead3/sead3-platform.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
   7  */
   8 #include <linux/dma-mapping.h>
   9 #include <linux/init.h>
  10 #include <linux/irq.h>
  11 #include <linux/irqchip/mips-gic.h>
  12 #include <linux/irqdomain.h>
  13 #include <linux/leds.h>
  14 #include <linux/mtd/physmap.h>
  15 #include <linux/of.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/serial_8250.h>
  18 #include <linux/smsc911x.h>
  19
  20 #include <asm/mips-boards/sead3int.h>
  21
  22 #define UART(base)                                                      \
  23 {                                                                       \
  24         .mapbase        = base,                                         \
  25         .irq            = -1,                                           \
  26         .uartclk        = 14745600,                                     \
  27         .iotype         = UPIO_MEM32,                                   \
  28         .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \
  29         .regshift       = 2,                                            \
  30 }
  31
  32 static struct plat_serial8250_port uart8250_data[] = {
  33         UART(0x1f000900),   /* ttyS0 = USB   */
  34         UART(0x1f000800),   /* ttyS1 = RS232 */
  35         { },
  36 };
  37
  38 static struct platform_device uart8250_device = {
  39         .name                   = "serial8250",
  40         .id                     = PLAT8250_DEV_PLATFORM2,
  41         .dev                    = {
  42                 .platform_data  = uart8250_data,
  43         },
  44 };
  45
  46 static struct smsc911x_platform_config sead3_smsc911x_data = {
  47         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  48         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  49         .flags          = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
  50         .phy_interface  = PHY_INTERFACE_MODE_MII,
  51 };
  52
  53 static struct resource sead3_net_resources[] = {
  54         {
  55                 .start                  = 0x1f010000,
  56                 .end                    = 0x1f01ffff,
  57                 .flags                  = IORESOURCE_MEM
  58         }, {
  59                 .flags                  = IORESOURCE_IRQ
  60         }
  61 };
  62
  63 static struct platform_device sead3_net_device = {
  64         .name                   = "smsc911x",
  65         .id                     = 0,
  66         .dev                    = {
  67                 .platform_data  = &sead3_smsc911x_data,
  68         },
  69         .num_resources          = ARRAY_SIZE(sead3_net_resources),
  70         .resource               = sead3_net_resources
  71 };
  72
  73 static struct mtd_partition sead3_mtd_partitions[] = {
  74         {
  75                 .name =         "User FS",
  76                 .offset =       0x00000000,
  77                 .size =         0x01fc0000,
  78         }, {
  79                 .name =         "Board Config",
  80                 .offset =       0x01fc0000,
  81                 .size =         0x00040000,
  82                 .mask_flags =   MTD_WRITEABLE
  83         },
  84 };
  85
  86 static struct physmap_flash_data sead3_flash_data = {
  87         .width          = 4,
  88         .nr_parts       = ARRAY_SIZE(sead3_mtd_partitions),
  89         .parts          = sead3_mtd_partitions
  90 };
  91
  92 static struct resource sead3_flash_resource = {
  93         .start          = 0x1c000000,
  94         .end            = 0x1dffffff,
  95         .flags          = IORESOURCE_MEM
  96 };
  97
  98 static struct platform_device sead3_flash = {
  99         .name           = "physmap-flash",
 100         .id             = 0,
 101         .dev            = {
 102                 .platform_data  = &sead3_flash_data,
 103         },
 104         .num_resources  = 1,
 105         .resource       = &sead3_flash_resource,
 106 };
 107
 108 #define LEDFLAGS(bits, shift)           \
 109         ((bits << 8) | (shift << 8))
 110
 111 #define LEDBITS(id, shift, bits)        \
 112         .name = id #shift,              \
 113         .flags = LEDFLAGS(bits, shift)
 114
 115 static struct led_info led_data_info[] = {
 116         { LEDBITS("bit", 0, 1) },
 117         { LEDBITS("bit", 1, 1) },
 118         { LEDBITS("bit", 2, 1) },
 119         { LEDBITS("bit", 3, 1) },
 120         { LEDBITS("bit", 4, 1) },
 121         { LEDBITS("bit", 5, 1) },
 122         { LEDBITS("bit", 6, 1) },
 123         { LEDBITS("bit", 7, 1) },
 124         { LEDBITS("all", 0, 8) },
 125 };
 126
 127 static struct led_platform_data led_data = {
 128         .num_leds       = ARRAY_SIZE(led_data_info),
 129         .leds           = led_data_info
 130 };
 131
 132 static struct resource pled_resources[] = {
 133         {
 134                 .start  = 0x1f000210,
 135                 .end    = 0x1f000217,
 136                 .flags  = IORESOURCE_MEM
 137         }
 138 };
 139
 140 static struct platform_device pled_device = {
 141         .name                   = "sead3::pled",
 142         .id                     = 0,
 143         .dev                    = {
 144                 .platform_data  = &led_data,
 145         },
 146         .num_resources          = ARRAY_SIZE(pled_resources),
 147         .resource               = pled_resources
 148 };
 149
 150
 151 static struct resource fled_resources[] = {
 152         {
 153                 .start                  = 0x1f000218,
 154                 .end                    = 0x1f00021f,
 155                 .flags                  = IORESOURCE_MEM
 156         }
 157 };
 158
 159 static struct platform_device fled_device = {
 160         .name                   = "sead3::fled",
 161         .id                     = 0,
 162         .dev                    = {
 163                 .platform_data  = &led_data,
 164         },
 165         .num_resources          = ARRAY_SIZE(fled_resources),
 166         .resource               = fled_resources
 167 };
 168
 169 static struct platform_device sead3_led_device = {
 170         .name   = "sead3-led",
 171         .id     = -1,
 172 };
 173
 174 static struct resource ehci_resources[] = {
 175         {
 176                 .start                  = 0x1b200000,
 177                 .end                    = 0x1b200fff,
 178                 .flags                  = IORESOURCE_MEM
 179         }, {
 180                 .flags                  = IORESOURCE_IRQ
 181         }
 182 };
 183
 184 static u64 sead3_usbdev_dma_mask = DMA_BIT_MASK(32);
 185
 186 static struct platform_device ehci_device = {
 187         .name           = "sead3-ehci",
 188         .id             = 0,
 189         .dev            = {
 190                 .dma_mask               = &sead3_usbdev_dma_mask,
 191                 .coherent_dma_mask      = DMA_BIT_MASK(32)
 192         },
 193         .num_resources  = ARRAY_SIZE(ehci_resources),
 194         .resource       = ehci_resources
 195 };
 196
 197 static struct platform_device *sead3_platform_devices[] __initdata = {
 198         &uart8250_device,
 199         &sead3_flash,
 200         &pled_device,
 201         &fled_device,
 202         &sead3_led_device,
 203         &ehci_device,
 204         &sead3_net_device,
 205 };
 206
 207 static int __init sead3_platforms_device_init(void)
 208 {
 209         const char *intc_compat;
 210         struct device_node *node;
 211         struct irq_domain *irqd;
 212
 213         if (gic_present)
 214                 intc_compat = "mti,gic";
 215         else
 216                 intc_compat = "mti,cpu-interrupt-controller";
 217
 218         node = of_find_compatible_node(NULL, NULL, intc_compat);
 219         if (!node) {
 220                 pr_err("unable to find interrupt controller DT node\n");
 221                 return -ENODEV;
 222         }
 223
 224         irqd = irq_find_host(node);
 225         if (!irqd) {
 226                 pr_err("unable to find interrupt controller IRQ domain\n");
 227                 return -ENODEV;
 228         }
 229
 230         if (gic_present) {
 231                 uart8250_data[0].irq = irq_create_mapping(irqd, GIC_INT_UART0);
 232                 uart8250_data[1].irq = irq_create_mapping(irqd, GIC_INT_UART1);
 233                 ehci_resources[1].start =
 234                         irq_create_mapping(irqd, GIC_INT_EHCI);
 235                 sead3_net_resources[1].start =
 236                         irq_create_mapping(irqd, GIC_INT_NET);
 237         } else {
 238                 uart8250_data[0].irq = irq_create_mapping(irqd, CPU_INT_UART0);
 239                 uart8250_data[1].irq = irq_create_mapping(irqd, CPU_INT_UART1);
 240                 ehci_resources[1].start =
 241                         irq_create_mapping(irqd, CPU_INT_EHCI);
 242                 sead3_net_resources[1].start =
 243                         irq_create_mapping(irqd, CPU_INT_NET);
 244         }
 245
 246         return platform_add_devices(sead3_platform_devices,
 247                                     ARRAY_SIZE(sead3_platform_devices));
 248 }
 249
 250 device_initcall(sead3_platforms_device_init);