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/delay.h>
  26 #include <linux/leds.h>
  27 #include <linux/err.h>
  28 #include <linux/clk.h>
  29
  30 #include <mach/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/flash.h>
  34
  35 #include <mach/gpio.h>
  36 #include <mach/led.h>
  37 #include <mach/mux.h>
  38 #include <mach/usb.h>
  39 #include <mach/board.h>
  40 #include <mach/common.h>
  41 #include <mach/gpmc.h>
  42 #include <mach/control.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 #define APOLLON_ETHR_GPIO_IRQ   74
  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 | IORESOURCE_IRQ_HIGHEDGE,
 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         unsigned int rate;
 192         struct clk *gpmc_fck;
 193         int eth_cs;
 194
 195         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 196         if (IS_ERR(gpmc_fck)) {
 197                 WARN_ON(1);
 198                 return;
 199         }
 200
 201         clk_enable(gpmc_fck);
 202         rate = clk_get_rate(gpmc_fck);
 203
 204         eth_cs = APOLLON_ETH_CS;
 205
 206         /* Make sure CS1 timings are correct */
 207         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 208
 209         if (rate >= 160000000) {
 210                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 213                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 215         } else if (rate >= 130000000) {
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 219                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 221         } else {/* rate = 100000000 */
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 226                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 227         }
 228
 229         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 230                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 231                 goto out;
 232         }
 233         apollon_smc91x_resources[0].start = base + 0x300;
 234         apollon_smc91x_resources[0].end   = base + 0x30f;
 235         udelay(100);
 236
 237         omap_cfg_reg(W4__24XX_GPIO74);
 238         if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 239                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 240                         APOLLON_ETHR_GPIO_IRQ);
 241                 gpmc_cs_free(APOLLON_ETH_CS);
 242                 goto out;
 243         }
 244         gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
 245
 246 out:
 247         clk_disable(gpmc_fck);
 248         clk_put(gpmc_fck);
 249 }
 250
 251 static void __init omap_apollon_init_irq(void)
 252 {
 253         omap2_init_common_hw(NULL, NULL);
 254         omap_init_irq();
 255         omap_gpio_init();
 256         apollon_init_smc91x();
 257 }
 258
 259 static struct omap_uart_config apollon_uart_config __initdata = {
 260         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 261 };
 262
 263 static struct omap_usb_config apollon_usb_config __initdata = {
 264         .register_dev   = 1,
 265         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 266
 267         .pins[0]        = 6,
 268 };
 269
 270 static struct omap_lcd_config apollon_lcd_config __initdata = {
 271         .ctrl_name      = "internal",
 272 };
 273
 274 static struct omap_board_config_kernel apollon_config[] = {
 275         { OMAP_TAG_UART,        &apollon_uart_config },
 276         { OMAP_TAG_LCD,         &apollon_lcd_config },
 277 };
 278
 279 static void __init apollon_led_init(void)
 280 {
 281         /* LED0 - AA10 */
 282         omap_cfg_reg(AA10_242X_GPIO13);
 283         gpio_request(LED0_GPIO13, "LED0");
 284         gpio_direction_output(LED0_GPIO13, 0);
 285         /* LED1  - AA6 */
 286         omap_cfg_reg(AA6_242X_GPIO14);
 287         gpio_request(LED1_GPIO14, "LED1");
 288         gpio_direction_output(LED1_GPIO14, 0);
 289         /* LED2  - AA4 */
 290         omap_cfg_reg(AA4_242X_GPIO15);
 291         gpio_request(LED2_GPIO15, "LED2");
 292         gpio_direction_output(LED2_GPIO15, 0);
 293 }
 294
 295 static void __init apollon_usb_init(void)
 296 {
 297         /* USB device */
 298         /* DEVICE_SUSPEND */
 299         omap_cfg_reg(P21_242X_GPIO12);
 300         gpio_request(12, "USB suspend");
 301         gpio_direction_output(12, 0);
 302         omap_usb_init(&apollon_usb_config);
 303 }
 304
 305 static void __init omap_apollon_init(void)
 306 {
 307         u32 v;
 308
 309         apollon_led_init();
 310         apollon_flash_init();
 311         apollon_usb_init();
 312
 313         /* REVISIT: where's the correct place */
 314         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 315
 316         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 317         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 318         v |= (1 << 24);
 319         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 320
 321         /*
 322          * Make sure the serial ports are muxed on at this point.
 323          * You have to mux them off in device drivers later on
 324          * if not needed.
 325          */
 326         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 327         omap_board_config = apollon_config;
 328         omap_board_config_size = ARRAY_SIZE(apollon_config);
 329         omap_serial_init();
 330 }
 331
 332 static void __init omap_apollon_map_io(void)
 333 {
 334         omap2_set_globals_242x();
 335         omap2_map_common_io();
 336 }
 337
 338 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 339         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 340         .phys_io        = 0x48000000,
 341         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 342         .boot_params    = 0x80000100,
 343         .map_io         = omap_apollon_map_io,
 344         .init_irq       = omap_apollon_init_irq,
 345         .init_machine   = omap_apollon_init,
 346         .timer          = &omap_timer,
 347 MACHINE_END