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-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 #include <linux/err.h>
  31 #include <linux/clk.h>
  32
  33 #include <asm/hardware.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/flash.h>
  37
  38 #include <asm/arch/gpio.h>
  39 #include <asm/arch/led.h>
  40 #include <asm/arch/mux.h>
  41 #include <asm/arch/usb.h>
  42 #include <asm/arch/board.h>
  43 #include <asm/arch/common.h>
  44 #include <asm/arch/gpmc.h>
  45 #include "prcm-regs.h"
  46
  47 /* LED & Switch macros */
  48 #define LED0_GPIO13             13
  49 #define LED1_GPIO14             14
  50 #define LED2_GPIO15             15
  51 #define SW_ENTER_GPIO16         16
  52 #define SW_UP_GPIO17            17
  53 #define SW_DOWN_GPIO58          58
  54
  55 #define APOLLON_FLASH_CS        0
  56 #define APOLLON_ETH_CS          1
  57
  58 static struct mtd_partition apollon_partitions[] = {
  59         {
  60                 .name           = "X-Loader + U-Boot",
  61                 .offset         = 0,
  62                 .size           = SZ_128K,
  63                 .mask_flags     = MTD_WRITEABLE,
  64         },
  65         {
  66                 .name           = "params",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = SZ_128K,
  69         },
  70         {
  71                 .name           = "kernel",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = SZ_2M,
  74         },
  75         {
  76                 .name           = "rootfs",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = SZ_16M,
  79         },
  80         {
  81                 .name           = "filesystem00",
  82                 .offset         = MTDPART_OFS_APPEND,
  83                 .size           = SZ_32M,
  84         },
  85         {
  86                 .name           = "filesystem01",
  87                 .offset         = MTDPART_OFS_APPEND,
  88                 .size           = MTDPART_SIZ_FULL,
  89         },
  90 };
  91
  92 static struct flash_platform_data apollon_flash_data = {
  93         .parts          = apollon_partitions,
  94         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  95 };
  96
  97 static struct resource apollon_flash_resource[] = {
  98         [0] = {
  99                 .flags          = IORESOURCE_MEM,
 100         },
 101 };
 102
 103 static struct platform_device apollon_onenand_device = {
 104         .name           = "onenand",
 105         .id             = -1,
 106         .dev            = {
 107                 .platform_data  = &apollon_flash_data,
 108         },
 109         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
 110         .resource       = apollon_flash_resource,
 111 };
 112
 113 static void __init apollon_flash_init(void)
 114 {
 115         unsigned long base;
 116
 117         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
 118                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
 119                 return;
 120         }
 121         apollon_flash_resource[0].start = base;
 122         apollon_flash_resource[0].end   = base + SZ_128K - 1;
 123 }
 124
 125 static struct resource apollon_smc91x_resources[] = {
 126         [0] = {
 127                 .flags  = IORESOURCE_MEM,
 128         },
 129         [1] = {
 130                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 131                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 132                 .flags  = IORESOURCE_IRQ,
 133         },
 134 };
 135
 136 static struct platform_device apollon_smc91x_device = {
 137         .name           = "smc91x",
 138         .id             = -1,
 139         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 140         .resource       = apollon_smc91x_resources,
 141 };
 142
 143 static struct platform_device apollon_lcd_device = {
 144         .name           = "apollon_lcd",
 145         .id             = -1,
 146 };
 147
 148 static struct omap_led_config apollon_led_config[] = {
 149         {
 150                 .cdev   = {
 151                         .name   = "apollon:led0",
 152                 },
 153                 .gpio   = LED0_GPIO13,
 154         },
 155         {
 156                 .cdev   = {
 157                         .name   = "apollon:led1",
 158                 },
 159                 .gpio   = LED1_GPIO14,
 160         },
 161         {
 162                 .cdev   = {
 163                         .name   = "apollon:led2",
 164                 },
 165                 .gpio   = LED2_GPIO15,
 166         },
 167 };
 168
 169 static struct omap_led_platform_data apollon_led_data = {
 170         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 171         .leds           = apollon_led_config,
 172 };
 173
 174 static struct platform_device apollon_led_device = {
 175         .name           = "omap-led",
 176         .id             = -1,
 177         .dev            = {
 178                 .platform_data  = &apollon_led_data,
 179         },
 180 };
 181
 182 static struct platform_device *apollon_devices[] __initdata = {
 183         &apollon_onenand_device,
 184         &apollon_smc91x_device,
 185         &apollon_lcd_device,
 186         &apollon_led_device,
 187 };
 188
 189 static inline void __init apollon_init_smc91x(void)
 190 {
 191         unsigned long base;
 192         unsigned int rate;
 193         struct clk *l3ck;
 194         int eth_cs;
 195
 196         l3ck = clk_get(NULL, "core_l3_ck");
 197         if (IS_ERR(l3ck))
 198                 rate = 100000000;
 199         else
 200                 rate = clk_get_rate(l3ck);
 201
 202         eth_cs = APOLLON_ETH_CS;
 203
 204         /* Make sure CS1 timings are correct */
 205         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 206
 207         if (rate >= 160000000) {
 208                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 209                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 210                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 213         } else if (rate >= 130000000) {
 214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 219         } else {/* rate = 100000000 */
 220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 225         }
 226
 227         if (gpmc_cs_request(eth_cs, SZ_16M, &base) < 0) {
 228                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 229                 return;
 230         }
 231         apollon_smc91x_resources[0].start = base + 0x300;
 232         apollon_smc91x_resources[0].end   = base + 0x30f;
 233         udelay(100);
 234
 235         omap_cfg_reg(W4__24XX_GPIO74);
 236         if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
 237                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 238                         APOLLON_ETHR_GPIO_IRQ);
 239                 gpmc_cs_free(eth_cs);
 240                 return;
 241         }
 242         omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
 243 }
 244
 245 static void __init omap_apollon_init_irq(void)
 246 {
 247         omap2_init_common_hw();
 248         omap_init_irq();
 249         omap_gpio_init();
 250         apollon_init_smc91x();
 251 }
 252
 253 static struct omap_uart_config apollon_uart_config __initdata = {
 254         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 255 };
 256
 257 static struct omap_mmc_config apollon_mmc_config __initdata = {
 258         .mmc [0] = {
 259                 .enabled        = 1,
 260                 .wire4          = 1,
 261                 .wp_pin         = -1,
 262                 .power_pin      = -1,
 263         /* Note: If you want to detect card feature, please assign 37 */
 264                 .switch_pin     = -1,
 265         },
 266 };
 267
 268 static struct omap_usb_config apollon_usb_config __initdata = {
 269         .register_dev   = 1,
 270         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 271
 272         .pins[0]        = 6,
 273 };
 274
 275 static struct omap_lcd_config apollon_lcd_config __initdata = {
 276         .ctrl_name      = "internal",
 277 };
 278
 279 static struct omap_board_config_kernel apollon_config[] = {
 280         { OMAP_TAG_UART,        &apollon_uart_config },
 281         { OMAP_TAG_MMC,         &apollon_mmc_config },
 282         { OMAP_TAG_USB,         &apollon_usb_config },
 283         { OMAP_TAG_LCD,         &apollon_lcd_config },
 284 };
 285
 286 static void __init apollon_led_init(void)
 287 {
 288         /* LED0 - AA10 */
 289         omap_cfg_reg(AA10_242X_GPIO13);
 290         omap_request_gpio(LED0_GPIO13);
 291         omap_set_gpio_direction(LED0_GPIO13, 0);
 292         omap_set_gpio_dataout(LED0_GPIO13, 0);
 293         /* LED1  - AA6 */
 294         omap_cfg_reg(AA6_242X_GPIO14);
 295         omap_request_gpio(LED1_GPIO14);
 296         omap_set_gpio_direction(LED1_GPIO14, 0);
 297         omap_set_gpio_dataout(LED1_GPIO14, 0);
 298         /* LED2  - AA4 */
 299         omap_cfg_reg(AA4_242X_GPIO15);
 300         omap_request_gpio(LED2_GPIO15);
 301         omap_set_gpio_direction(LED2_GPIO15, 0);
 302         omap_set_gpio_dataout(LED2_GPIO15, 0);
 303 }
 304
 305 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
 306 {
 307         static unsigned int led0, led1, led2;
 308
 309         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
 310                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
 311         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
 312                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
 313         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
 314                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
 315
 316         return IRQ_HANDLED;
 317 }
 318
 319 static void __init apollon_sw_init(void)
 320 {
 321         /* Enter SW - Y11 */
 322         omap_cfg_reg(Y11_242X_GPIO16);
 323         omap_request_gpio(SW_ENTER_GPIO16);
 324         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
 325         /* Up SW - AA12 */
 326         omap_cfg_reg(AA12_242X_GPIO17);
 327         omap_request_gpio(SW_UP_GPIO17);
 328         omap_set_gpio_direction(SW_UP_GPIO17, 1);
 329         /* Down SW - AA8 */
 330         omap_cfg_reg(AA8_242X_GPIO58);
 331         omap_request_gpio(SW_DOWN_GPIO58);
 332         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
 333
 334         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
 335         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
 336                                 IRQF_SHARED, "enter sw",
 337                                 &apollon_sw_interrupt))
 338                 return;
 339         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
 340         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
 341                                 IRQF_SHARED, "up sw",
 342                                 &apollon_sw_interrupt))
 343                 return;
 344         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
 345         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
 346                                 IRQF_SHARED, "down sw",
 347                                 &apollon_sw_interrupt))
 348                 return;
 349 }
 350
 351 static void __init apollon_usb_init(void)
 352 {
 353         /* USB device */
 354         /* DEVICE_SUSPEND */
 355         omap_cfg_reg(P21_242X_GPIO12);
 356         omap_request_gpio(12);
 357         omap_set_gpio_direction(12, 0);         /* OUT */
 358         omap_set_gpio_dataout(12, 0);
 359 }
 360
 361 static void __init omap_apollon_init(void)
 362 {
 363         apollon_led_init();
 364         apollon_sw_init();
 365         apollon_flash_init();
 366         apollon_usb_init();
 367
 368         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 369         CONTROL_DEVCONF |= (1 << 24);
 370
 371         /*
 372          * Make sure the serial ports are muxed on at this point.
 373          * You have to mux them off in device drivers later on
 374          * if not needed.
 375          */
 376         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 377         omap_board_config = apollon_config;
 378         omap_board_config_size = ARRAY_SIZE(apollon_config);
 379         omap_serial_init();
 380 }
 381
 382 static void __init omap_apollon_map_io(void)
 383 {
 384         omap2_map_common_io();
 385 }
 386
 387 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 388         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 389         .phys_io        = 0x48000000,
 390         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 391         .boot_params    = 0x80000100,
 392         .map_io         = omap_apollon_map_io,
 393         .init_irq       = omap_apollon_init_irq,
 394         .init_machine   = omap_apollon_init,
 395         .timer          = &omap_timer,
 396 MACHINE_END