arch/arm/mach-orion/common.c

   1 /*
   2  * arch/arm/mach-orion/common.c
   3  *
   4  * Core functions for Marvell Orion System On Chip
   5  *
   6  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
   7  *
   8  * This file is licensed under  the terms of the GNU General Public
   9  * License version 2. This program is licensed "as is" without any
  10  * warranty of any kind, whether express or implied.
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/serial_8250.h>
  17 #include <linux/mv643xx_eth.h>
  18 #include <linux/mv643xx_i2c.h>
  19 #include <asm/page.h>
  20 #include <asm/timex.h>
  21 #include <asm/mach/map.h>
  22 #include <asm/arch/orion.h>
  23 #include "common.h"
  24
  25 /*****************************************************************************
  26  * I/O Address Mapping
  27  ****************************************************************************/
  28 static struct map_desc orion_io_desc[] __initdata = {
  29         {
  30                 .virtual        = ORION_REGS_BASE,
  31                 .pfn            = __phys_to_pfn(ORION_REGS_BASE),
  32                 .length         = ORION_REGS_SIZE,
  33                 .type           = MT_DEVICE
  34         },
  35         {
  36                 .virtual        = ORION_PCIE_IO_BASE,
  37                 .pfn            = __phys_to_pfn(ORION_PCIE_IO_BASE),
  38                 .length         = ORION_PCIE_IO_SIZE,
  39                 .type           = MT_DEVICE
  40         },
  41         {
  42                 .virtual        = ORION_PCI_IO_BASE,
  43                 .pfn            = __phys_to_pfn(ORION_PCI_IO_BASE),
  44                 .length         = ORION_PCI_IO_SIZE,
  45                 .type           = MT_DEVICE
  46         },
  47         {
  48                 .virtual        = ORION_PCIE_WA_BASE,
  49                 .pfn            = __phys_to_pfn(ORION_PCIE_WA_BASE),
  50                 .length         = ORION_PCIE_WA_SIZE,
  51                 .type           = MT_DEVICE
  52         },
  53 };
  54
  55 void __init orion_map_io(void)
  56 {
  57         iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
  58 }
  59
  60 /*****************************************************************************
  61  * UART
  62  ****************************************************************************/
  63
  64 static struct resource orion_uart_resources[] = {
  65         {
  66                 .start          = UART0_BASE,
  67                 .end            = UART0_BASE + 0xff,
  68                 .flags          = IORESOURCE_MEM,
  69         },
  70         {
  71                 .start          = IRQ_ORION_UART0,
  72                 .end            = IRQ_ORION_UART0,
  73                 .flags          = IORESOURCE_IRQ,
  74         },
  75         {
  76                 .start          = UART1_BASE,
  77                 .end            = UART1_BASE + 0xff,
  78                 .flags          = IORESOURCE_MEM,
  79         },
  80         {
  81                 .start          = IRQ_ORION_UART1,
  82                 .end            = IRQ_ORION_UART1,
  83                 .flags          = IORESOURCE_IRQ,
  84         },
  85 };
  86
  87 static struct plat_serial8250_port orion_uart_data[] = {
  88         {
  89                 .mapbase        = UART0_BASE,
  90                 .membase        = (char *)UART0_BASE,
  91                 .irq            = IRQ_ORION_UART0,
  92                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
  93                 .iotype         = UPIO_MEM,
  94                 .regshift       = 2,
  95                 .uartclk        = ORION_TCLK,
  96         },
  97         {
  98                 .mapbase        = UART1_BASE,
  99                 .membase        = (char *)UART1_BASE,
 100                 .irq            = IRQ_ORION_UART1,
 101                 .flags          = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF,
 102                 .iotype         = UPIO_MEM,
 103                 .regshift       = 2,
 104                 .uartclk        = ORION_TCLK,
 105         },
 106         { },
 107 };
 108
 109 static struct platform_device orion_uart = {
 110         .name                   = "serial8250",
 111         .id                     = PLAT8250_DEV_PLATFORM,
 112         .dev                    = {
 113                 .platform_data  = orion_uart_data,
 114         },
 115         .resource               = orion_uart_resources,
 116         .num_resources          = ARRAY_SIZE(orion_uart_resources),
 117 };
 118
 119 /*******************************************************************************
 120  * USB Controller - 2 interfaces
 121  ******************************************************************************/
 122
 123 static struct resource orion_ehci0_resources[] = {
 124         {
 125                 .start  = ORION_USB0_REG_BASE,
 126                 .end    = ORION_USB0_REG_BASE + SZ_4K,
 127                 .flags  = IORESOURCE_MEM,
 128         },
 129         {
 130                 .start  = IRQ_ORION_USB0_CTRL,
 131                 .end    = IRQ_ORION_USB0_CTRL,
 132                 .flags  = IORESOURCE_IRQ,
 133         },
 134 };
 135
 136 static struct resource orion_ehci1_resources[] = {
 137         {
 138                 .start  = ORION_USB1_REG_BASE,
 139                 .end    = ORION_USB1_REG_BASE + SZ_4K,
 140                 .flags  = IORESOURCE_MEM,
 141         },
 142         {
 143                 .start  = IRQ_ORION_USB1_CTRL,
 144                 .end    = IRQ_ORION_USB1_CTRL,
 145                 .flags  = IORESOURCE_IRQ,
 146         },
 147 };
 148
 149 static u64 ehci_dmamask = 0xffffffffUL;
 150
 151 static struct platform_device orion_ehci0 = {
 152         .name           = "orion-ehci",
 153         .id             = 0,
 154         .dev            = {
 155                 .dma_mask               = &ehci_dmamask,
 156                 .coherent_dma_mask      = 0xffffffff,
 157         },
 158         .resource       = orion_ehci0_resources,
 159         .num_resources  = ARRAY_SIZE(orion_ehci0_resources),
 160 };
 161
 162 static struct platform_device orion_ehci1 = {
 163         .name           = "orion-ehci",
 164         .id             = 1,
 165         .dev            = {
 166                 .dma_mask               = &ehci_dmamask,
 167                 .coherent_dma_mask      = 0xffffffff,
 168         },
 169         .resource       = orion_ehci1_resources,
 170         .num_resources  = ARRAY_SIZE(orion_ehci1_resources),
 171 };
 172
 173 /*****************************************************************************
 174  * Gigabit Ethernet port
 175  * (The Orion and Discovery (MV643xx) families use the same Ethernet driver)
 176  ****************************************************************************/
 177
 178 static struct resource orion_eth_shared_resources[] = {
 179         {
 180                 .start  = ORION_ETH_REG_BASE,
 181                 .end    = ORION_ETH_REG_BASE + 0xffff,
 182                 .flags  = IORESOURCE_MEM,
 183         },
 184 };
 185
 186 static struct platform_device orion_eth_shared = {
 187         .name           = MV643XX_ETH_SHARED_NAME,
 188         .id             = 0,
 189         .num_resources  = 1,
 190         .resource       = orion_eth_shared_resources,
 191 };
 192
 193 static struct resource orion_eth_resources[] = {
 194         {
 195                 .name   = "eth irq",
 196                 .start  = IRQ_ORION_ETH_SUM,
 197                 .end    = IRQ_ORION_ETH_SUM,
 198                 .flags  = IORESOURCE_IRQ,
 199         }
 200 };
 201
 202 static struct platform_device orion_eth = {
 203         .name           = MV643XX_ETH_NAME,
 204         .id             = 0,
 205         .num_resources  = 1,
 206         .resource       = orion_eth_resources,
 207 };
 208
 209 void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
 210 {
 211         orion_eth.dev.platform_data = eth_data;
 212         platform_device_register(&orion_eth_shared);
 213         platform_device_register(&orion_eth);
 214 }
 215
 216 /*****************************************************************************
 217  * I2C controller
 218  * (The Orion and Discovery (MV643xx) families share the same I2C controller)
 219  ****************************************************************************/
 220
 221 static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
 222         .freq_m         = 8, /* assumes 166 MHz TCLK */
 223         .freq_n         = 3,
 224         .timeout        = 1000, /* Default timeout of 1 second */
 225 };
 226
 227 static struct resource orion_i2c_resources[] = {
 228         {
 229                 .name   = "i2c base",
 230                 .start  = I2C_BASE,
 231                 .end    = I2C_BASE + 0x20 -1,
 232                 .flags  = IORESOURCE_MEM,
 233         },
 234         {
 235                 .name   = "i2c irq",
 236                 .start  = IRQ_ORION_I2C,
 237                 .end    = IRQ_ORION_I2C,
 238                 .flags  = IORESOURCE_IRQ,
 239         },
 240 };
 241
 242 static struct platform_device orion_i2c = {
 243         .name           = MV64XXX_I2C_CTLR_NAME,
 244         .id             = 0,
 245         .num_resources  = ARRAY_SIZE(orion_i2c_resources),
 246         .resource       = orion_i2c_resources,
 247         .dev            = {
 248                 .platform_data = &orion_i2c_pdata,
 249         },
 250 };
 251
 252 /*****************************************************************************
 253  * General
 254  ****************************************************************************/
 255
 256 /*
 257  * Identify device ID and rev from PCIE configuration header space '0'.
 258  */
 259 static void orion_id(u32 *dev, u32 *rev, char **dev_name)
 260 {
 261         orion_pcie_id(dev, rev);
 262
 263         if (*dev == MV88F5281_DEV_ID) {
 264                 if (*rev == MV88F5281_REV_D2) {
 265                         *dev_name = "MV88F5281-D2";
 266                 } else if (*rev == MV88F5281_REV_D1) {
 267                         *dev_name = "MV88F5281-D1";
 268                 } else {
 269                         *dev_name = "MV88F5281-Rev-Unsupported";
 270                 }
 271         } else if (*dev == MV88F5182_DEV_ID) {
 272                 if (*rev == MV88F5182_REV_A2) {
 273                         *dev_name = "MV88F5182-A2";
 274                 } else {
 275                         *dev_name = "MV88F5182-Rev-Unsupported";
 276                 }
 277         } else if (*dev == MV88F5181_DEV_ID) {
 278                 if (*rev == MV88F5181_REV_B1) {
 279                         *dev_name = "MV88F5181-Rev-B1";
 280                 } else {
 281                         *dev_name = "MV88F5181-Rev-Unsupported";
 282                 }
 283         } else {
 284                 *dev_name = "Device-Unknown";
 285         }
 286 }
 287
 288 void __init orion_init(void)
 289 {
 290         char *dev_name;
 291         u32 dev, rev;
 292
 293         orion_id(&dev, &rev, &dev_name);
 294         printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
 295
 296         /*
 297          * Setup Orion address map
 298          */
 299         orion_setup_cpu_wins();
 300         orion_setup_usb_wins();
 301         orion_setup_eth_wins();
 302         orion_setup_pci_wins();
 303         orion_setup_pcie_wins();
 304         if (dev == MV88F5182_DEV_ID)
 305                 orion_setup_sata_wins();
 306
 307         /*
 308          * REgister devices
 309          */
 310         platform_device_register(&orion_uart);
 311         platform_device_register(&orion_ehci0);
 312         if (dev == MV88F5182_DEV_ID)
 313                 platform_device_register(&orion_ehci1);
 314         platform_device_register(&orion_i2c);
 315 }