SAFE public projects git trees. - safe/jmp/linux-2.6/blob - arch/arm/mach-nomadik/board-nhk8815.c

   1 /*
   2  *  linux/arch/arm/mach-nomadik/board-8815nhk.c
   3  *
   4  *  Copyright (C) STMicroelectronics
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  *  NHK15 board specifc driver definition
  11  */
  12 #include <linux/types.h>
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/amba/bus.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/gpio.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/nand.h>
  21 #include <linux/mtd/partitions.h>
  22 #include <linux/io.h>
  23 #include <asm/sizes.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/irq.h>
  27 #include <mach/setup.h>
  28 #include <mach/nand.h>
  29 #include <mach/fsmc.h>
  30 #include "clock.h"
  31
  32 /* These adresses span 16MB, so use three individual pages */
  33 static struct resource nhk8815_nand_resources[] = {
  34         {
  35                 .name = "nand_addr",
  36                 .start = NAND_IO_ADDR,
  37                 .end = NAND_IO_ADDR + 0xfff,
  38                 .flags = IORESOURCE_MEM,
  39         }, {
  40                 .name = "nand_cmd",
  41                 .start = NAND_IO_CMD,
  42                 .end = NAND_IO_CMD + 0xfff,
  43                 .flags = IORESOURCE_MEM,
  44         }, {
  45                 .name = "nand_data",
  46                 .start = NAND_IO_DATA,
  47                 .end = NAND_IO_DATA + 0xfff,
  48                 .flags = IORESOURCE_MEM,
  49         }
  50 };
  51
  52 static int nhk8815_nand_init(void)
  53 {
  54         /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
  55         writel(0x0000000E, FSMC_PCR(0));
  56         writel(0x000D0A00, FSMC_PMEM(0));
  57         writel(0x00100A00, FSMC_PATT(0));
  58
  59         /* enable access to the chip select area */
  60         writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));
  61
  62         return 0;
  63 }
  64
  65 /*
  66  * These partitions are the same as those used in the 2.6.20 release
  67  * shipped by the vendor; the first two partitions are mandated
  68  * by the boot ROM, and the bootloader area is somehow oversized...
  69  */
  70 static struct mtd_partition nhk8815_partitions[] = {
  71         {
  72                 .name   = "X-Loader(NAND)",
  73                 .offset = 0,
  74                 .size   = SZ_256K,
  75         }, {
  76                 .name   = "MemInit(NAND)",
  77                 .offset = MTDPART_OFS_APPEND,
  78                 .size   = SZ_256K,
  79         }, {
  80                 .name   = "BootLoader(NAND)",
  81                 .offset = MTDPART_OFS_APPEND,
  82                 .size   = SZ_2M,
  83         }, {
  84                 .name   = "Kernel zImage(NAND)",
  85                 .offset = MTDPART_OFS_APPEND,
  86                 .size   = 3 * SZ_1M,
  87         }, {
  88                 .name   = "Root Filesystem(NAND)",
  89                 .offset = MTDPART_OFS_APPEND,
  90                 .size   = 22 * SZ_1M,
  91         }, {
  92                 .name   = "User Filesystem(NAND)",
  93                 .offset = MTDPART_OFS_APPEND,
  94                 .size   = MTDPART_SIZ_FULL,
  95         }
  96 };
  97
  98 static struct nomadik_nand_platform_data nhk8815_nand_data = {
  99         .parts          = nhk8815_partitions,
 100         .nparts         = ARRAY_SIZE(nhk8815_partitions),
 101         .options        = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
 102                         | NAND_NO_READRDY | NAND_NO_AUTOINCR,
 103         .init           = nhk8815_nand_init,
 104 };
 105
 106 static struct platform_device nhk8815_nand_device = {
 107         .name           = "nomadik_nand",
 108         .dev            = {
 109                 .platform_data = &nhk8815_nand_data,
 110         },
 111         .resource       = nhk8815_nand_resources,
 112         .num_resources  = ARRAY_SIZE(nhk8815_nand_resources),
 113 };
 114
 115
 116 #define __MEM_4K_RESOURCE(x) \
 117         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
 118
 119 static struct amba_device uart0_device = {
 120         .dev = { .init_name = "uart0" },
 121         __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
 122         .irq = {IRQ_UART0, NO_IRQ},
 123 };
 124
 125 static struct amba_device uart1_device = {
 126         .dev = { .init_name = "uart1" },
 127         __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
 128         .irq = {IRQ_UART1, NO_IRQ},
 129 };
 130
 131 static struct amba_device *amba_devs[] __initdata = {
 132         &uart0_device,
 133         &uart1_device,
 134 };
 135
 136 /* We have a fixed clock alone, by now */
 137 static struct clk nhk8815_clk_48 = {
 138         .rate = 48*1000*1000,
 139 };
 140
 141 static struct resource nhk8815_eth_resources[] = {
 142         {
 143                 .name = "smc91x-regs",
 144                 .start = 0x34000000 + 0x300,
 145                 .end = 0x34000000 + SZ_64K - 1,
 146                 .flags = IORESOURCE_MEM,
 147         }, {
 148                 .start = NOMADIK_GPIO_TO_IRQ(115),
 149                 .end = NOMADIK_GPIO_TO_IRQ(115),
 150                 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
 151         }
 152 };
 153
 154 static struct platform_device nhk8815_eth_device = {
 155         .name = "smc91x",
 156         .resource = nhk8815_eth_resources,
 157         .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
 158 };
 159
 160 static int __init nhk8815_eth_init(void)
 161 {
 162         int gpio_nr = 115; /* hardwired in the board */
 163         int err;
 164
 165         err = gpio_request(gpio_nr, "eth_irq");
 166         if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
 167         if (!err) err = gpio_direction_input(gpio_nr);
 168         if (err)
 169                 pr_err("Error %i in %s\n", err, __func__);
 170         return err;
 171 }
 172 device_initcall(nhk8815_eth_init);
 173
 174 static struct platform_device *nhk8815_platform_devices[] __initdata = {
 175         &nhk8815_nand_device,
 176         &nhk8815_eth_device,
 177         /* will add more devices */
 178 };
 179
 180 static void __init nhk8815_platform_init(void)
 181 {
 182         int i;
 183
 184         cpu8815_platform_init();
 185         platform_add_devices(nhk8815_platform_devices,
 186                              ARRAY_SIZE(nhk8815_platform_devices));
 187
 188         for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
 189                 nmdk_clk_create(&nhk8815_clk_48, amba_devs[i]->dev.init_name);
 190                 amba_device_register(amba_devs[i], &iomem_resource);
 191         }
 192 }
 193
 194 MACHINE_START(NOMADIK, "NHK8815")
 195         /* Maintainer: ST MicroElectronics */
 196         .phys_io        = NOMADIK_UART0_BASE,
 197         .io_pg_offst    = (IO_ADDRESS(NOMADIK_UART0_BASE) >> 18) & 0xfffc,
 198         .boot_params    = 0x100,
 199         .map_io         = cpu8815_map_io,
 200         .init_irq       = cpu8815_init_irq,
 201         .timer          = &nomadik_timer,
 202         .init_machine   = nhk8815_platform_init,
 203 MACHINE_END