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