arch/arm/mach-omap2/board-apollon.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-apollon.c
   3  *
   4  * Copyright (C) 2005,2006 Samsung Electronics
   5  * Author: Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * Modified from mach-omap/omap2/board-h4.c
   8  *
   9  * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
  10  * the bootloader passes the board-specific data to the kernel.
  11  * Do not put any board specific code to this file; create a new machine
  12  * type if you need custom low-level initializations.
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/mtd/onenand.h>
  25 #include <linux/irq.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/delay.h>
  28 #include <linux/leds.h>
  29
  30 #include <asm/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/flash.h>
  34
  35 #include <asm/arch/gpio.h>
  36 #include <asm/arch/led.h>
  37 #include <asm/arch/mux.h>
  38 #include <asm/arch/usb.h>
  39 #include <asm/arch/board.h>
  40 #include <asm/arch/common.h>
  41 #include <asm/arch/gpmc.h>
  42 #include "prcm-regs.h"
  43
  44 /* LED & Switch macros */
  45 #define LED0_GPIO13             13
  46 #define LED1_GPIO14             14
  47 #define LED2_GPIO15             15
  48 #define SW_ENTER_GPIO16         16
  49 #define SW_UP_GPIO17            17
  50 #define SW_DOWN_GPIO58          58
  51
  52 #define APOLLON_FLASH_CS        0
  53 #define APOLLON_ETH_CS          1
  54
  55 static struct mtd_partition apollon_partitions[] = {
  56         {
  57                 .name           = "X-Loader + U-Boot",
  58                 .offset         = 0,
  59                 .size           = SZ_128K,
  60                 .mask_flags     = MTD_WRITEABLE,
  61         },
  62         {
  63                 .name           = "params",
  64                 .offset         = MTDPART_OFS_APPEND,
  65                 .size           = SZ_128K,
  66         },
  67         {
  68                 .name           = "kernel",
  69                 .offset         = MTDPART_OFS_APPEND,
  70                 .size           = SZ_2M,
  71         },
  72         {
  73                 .name           = "rootfs",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = SZ_16M,
  76         },
  77         {
  78                 .name           = "filesystem00",
  79                 .offset         = MTDPART_OFS_APPEND,
  80                 .size           = SZ_32M,
  81         },
  82         {
  83                 .name           = "filesystem01",
  84                 .offset         = MTDPART_OFS_APPEND,
  85                 .size           = MTDPART_SIZ_FULL,
  86         },
  87 };
  88
  89 static struct flash_platform_data apollon_flash_data = {
  90         .parts          = apollon_partitions,
  91         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  92 };
  93
  94 static struct resource apollon_flash_resource[] = {
  95         [0] = {
  96                 .flags          = IORESOURCE_MEM,
  97         },
  98 };
  99
 100 static struct platform_device apollon_onenand_device = {
 101         .name           = "onenand",
 102         .id             = -1,
 103         .dev            = {
 104                 .platform_data  = &apollon_flash_data,
 105         },
 106         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
 107         .resource       = apollon_flash_resource,
 108 };
 109
 110 static void __init apollon_flash_init(void)
 111 {
 112         unsigned long base;
 113
 114         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
 115                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
 116                 return;
 117         }
 118         apollon_flash_resource[0].start = base;
 119         apollon_flash_resource[0].end   = base + SZ_128K - 1;
 120 }
 121
 122 static struct resource apollon_smc91x_resources[] = {
 123         [0] = {
 124                 .flags  = IORESOURCE_MEM,
 125         },
 126         [1] = {
 127                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 128                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 129                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 130         },
 131 };
 132
 133 static struct platform_device apollon_smc91x_device = {
 134         .name           = "smc91x",
 135         .id             = -1,
 136         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 137         .resource       = apollon_smc91x_resources,
 138 };
 139
 140 static struct platform_device apollon_lcd_device = {
 141         .name           = "apollon_lcd",
 142         .id             = -1,
 143 };
 144
 145 static struct omap_led_config apollon_led_config[] = {
 146         {
 147                 .cdev   = {
 148                         .name   = "apollon:led0",
 149                 },
 150                 .gpio   = LED0_GPIO13,
 151         },
 152         {
 153                 .cdev   = {
 154                         .name   = "apollon:led1",
 155                 },
 156                 .gpio   = LED1_GPIO14,
 157         },
 158         {
 159                 .cdev   = {
 160                         .name   = "apollon:led2",
 161                 },
 162                 .gpio   = LED2_GPIO15,
 163         },
 164 };
 165
 166 static struct omap_led_platform_data apollon_led_data = {
 167         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 168         .leds           = apollon_led_config,
 169 };
 170
 171 static struct platform_device apollon_led_device = {
 172         .name           = "omap-led",
 173         .id             = -1,
 174         .dev            = {
 175                 .platform_data  = &apollon_led_data,
 176         },
 177 };
 178
 179 static struct platform_device *apollon_devices[] __initdata = {
 180         &apollon_onenand_device,
 181         &apollon_smc91x_device,
 182         &apollon_lcd_device,
 183         &apollon_led_device,
 184 };
 185
 186 static inline void __init apollon_init_smc91x(void)
 187 {
 188         unsigned long base;
 189
 190         /* Make sure CS1 timings are correct */
 191         GPMC_CONFIG1_1 = 0x00011203;
 192         GPMC_CONFIG2_1 = 0x001f1f01;
 193         GPMC_CONFIG3_1 = 0x00080803;
 194         GPMC_CONFIG4_1 = 0x1c091c09;
 195         GPMC_CONFIG5_1 = 0x041f1f1f;
 196         GPMC_CONFIG6_1 = 0x000004c4;
 197
 198         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 199                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 200                 return;
 201         }
 202         apollon_smc91x_resources[0].start = base + 0x300;
 203         apollon_smc91x_resources[0].end   = base + 0x30f;
 204         udelay(100);
 205
 206         omap_cfg_reg(W4__24XX_GPIO74);
 207         if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
 208                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 209                         APOLLON_ETHR_GPIO_IRQ);
 210                 gpmc_cs_free(APOLLON_ETH_CS);
 211                 return;
 212         }
 213         omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
 214 }
 215
 216 static void __init omap_apollon_init_irq(void)
 217 {
 218         omap2_init_common_hw();
 219         omap_init_irq();
 220         omap_gpio_init();
 221         apollon_init_smc91x();
 222 }
 223
 224 static struct omap_uart_config apollon_uart_config __initdata = {
 225         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 226 };
 227
 228 static struct omap_mmc_config apollon_mmc_config __initdata = {
 229         .mmc [0] = {
 230                 .enabled        = 1,
 231                 .wire4          = 1,
 232                 .wp_pin         = -1,
 233                 .power_pin      = -1,
 234                 .switch_pin     = -1,
 235         },
 236 };
 237
 238 static struct omap_usb_config apollon_usb_config __initdata = {
 239         .register_dev   = 1,
 240         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 241
 242         .pins[0]        = 6,
 243 };
 244
 245 static struct omap_lcd_config apollon_lcd_config __initdata = {
 246         .ctrl_name      = "internal",
 247 };
 248
 249 static struct omap_board_config_kernel apollon_config[] = {
 250         { OMAP_TAG_UART,        &apollon_uart_config },
 251         { OMAP_TAG_MMC,         &apollon_mmc_config },
 252         { OMAP_TAG_USB,         &apollon_usb_config },
 253         { OMAP_TAG_LCD,         &apollon_lcd_config },
 254 };
 255
 256 static void __init apollon_led_init(void)
 257 {
 258         /* LED0 - AA10 */
 259         omap_cfg_reg(AA10_242X_GPIO13);
 260         omap_request_gpio(LED0_GPIO13);
 261         omap_set_gpio_direction(LED0_GPIO13, 0);
 262         omap_set_gpio_dataout(LED0_GPIO13, 0);
 263         /* LED1  - AA6 */
 264         omap_cfg_reg(AA6_242X_GPIO14);
 265         omap_request_gpio(LED1_GPIO14);
 266         omap_set_gpio_direction(LED1_GPIO14, 0);
 267         omap_set_gpio_dataout(LED1_GPIO14, 0);
 268         /* LED2  - AA4 */
 269         omap_cfg_reg(AA4_242X_GPIO15);
 270         omap_request_gpio(LED2_GPIO15);
 271         omap_set_gpio_direction(LED2_GPIO15, 0);
 272         omap_set_gpio_dataout(LED2_GPIO15, 0);
 273 }
 274
 275 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
 276 {
 277         static unsigned int led0, led1, led2;
 278
 279         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
 280                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
 281         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
 282                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
 283         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
 284                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
 285
 286         return IRQ_HANDLED;
 287 }
 288
 289 static void __init apollon_sw_init(void)
 290 {
 291         /* Enter SW - Y11 */
 292         omap_cfg_reg(Y11_242X_GPIO16);
 293         omap_request_gpio(SW_ENTER_GPIO16);
 294         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
 295         /* Up SW - AA12 */
 296         omap_cfg_reg(AA12_242X_GPIO17);
 297         omap_request_gpio(SW_UP_GPIO17);
 298         omap_set_gpio_direction(SW_UP_GPIO17, 1);
 299         /* Down SW - AA8 */
 300         omap_cfg_reg(AA8_242X_GPIO58);
 301         omap_request_gpio(SW_DOWN_GPIO58);
 302         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
 303
 304         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
 305         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
 306                                 IRQF_SHARED, "enter sw",
 307                                 &apollon_sw_interrupt))
 308                 return;
 309         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
 310         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
 311                                 IRQF_SHARED, "up sw",
 312                                 &apollon_sw_interrupt))
 313                 return;
 314         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
 315         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
 316                                 IRQF_SHARED, "down sw",
 317                                 &apollon_sw_interrupt))
 318                 return;
 319 }
 320
 321 static void __init apollon_usb_init(void)
 322 {
 323         /* USB device */
 324         /* DEVICE_SUSPEND */
 325         omap_cfg_reg(P21_242X_GPIO12);
 326         omap_request_gpio(12);
 327         omap_set_gpio_direction(12, 0);         /* OUT */
 328         omap_set_gpio_dataout(12, 0);
 329 }
 330
 331 static void __init omap_apollon_init(void)
 332 {
 333         apollon_led_init();
 334         apollon_sw_init();
 335         apollon_flash_init();
 336         apollon_usb_init();
 337
 338         /* REVISIT: where's the correct place */
 339         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 340
 341         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 342         CONTROL_DEVCONF |= (1 << 24);
 343
 344         /*
 345          * Make sure the serial ports are muxed on at this point.
 346          * You have to mux them off in device drivers later on
 347          * if not needed.
 348          */
 349         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 350         omap_board_config = apollon_config;
 351         omap_board_config_size = ARRAY_SIZE(apollon_config);
 352         omap_serial_init();
 353 }
 354
 355 static void __init omap_apollon_map_io(void)
 356 {
 357         omap2_map_common_io();
 358 }
 359
 360 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 361         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 362         .phys_io        = 0x48000000,
 363         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 364         .boot_params    = 0x80000100,
 365         .map_io         = omap_apollon_map_io,
 366         .init_irq       = omap_apollon_init_irq,
 367         .init_machine   = omap_apollon_init,
 368         .timer          = &omap_timer,
 369 MACHINE_END