kernel/2.6.29.6-aldebaran-rt/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
  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         unsigned int rate;
 191         struct clk *gpmc_fck;
 192         int eth_cs;
 193
 194         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 195         if (IS_ERR(gpmc_fck)) {
 196                 WARN_ON(1);
 197                 return;
 198         }
 199
 200         clk_enable(gpmc_fck);
 201         rate = clk_get_rate(gpmc_fck);
 202
 203         eth_cs = APOLLON_ETH_CS;
 204
 205         /* Make sure CS1 timings are correct */
 206         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 207
 208         if (rate >= 160000000) {
 209                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 210                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 213                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 214         } else if (rate >= 130000000) {
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 219                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 220         } else {/* rate = 100000000 */
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 226         }
 227
 228         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 229                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 230                 goto out;
 231         }
 232         apollon_smc91x_resources[0].start = base + 0x300;
 233         apollon_smc91x_resources[0].end   = base + 0x30f;
 234         udelay(100);
 235
 236         omap_cfg_reg(W4__24XX_GPIO74);
 237         if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 238                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 239                         APOLLON_ETHR_GPIO_IRQ);
 240                 gpmc_cs_free(APOLLON_ETH_CS);
 241                 goto out;
 242         }
 243         gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
 244
 245 out:
 246         clk_disable(gpmc_fck);
 247         clk_put(gpmc_fck);
 248 }
 249
 250 static void __init omap_apollon_init_irq(void)
 251 {
 252         omap2_init_common_hw();
 253         omap_init_irq();
 254         omap_gpio_init();
 255         apollon_init_smc91x();
 256 }
 257
 258 static struct omap_uart_config apollon_uart_config __initdata = {
 259         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 260 };
 261
 262 static struct omap_usb_config apollon_usb_config __initdata = {
 263         .register_dev   = 1,
 264         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 265
 266         .pins[0]        = 6,
 267 };
 268
 269 static struct omap_lcd_config apollon_lcd_config __initdata = {
 270         .ctrl_name      = "internal",
 271 };
 272
 273 static struct omap_board_config_kernel apollon_config[] = {
 274         { OMAP_TAG_UART,        &apollon_uart_config },
 275         { OMAP_TAG_USB,         &apollon_usb_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 }
 303
 304 static void __init omap_apollon_init(void)
 305 {
 306         u32 v;
 307
 308         apollon_led_init();
 309         apollon_flash_init();
 310         apollon_usb_init();
 311
 312         /* REVISIT: where's the correct place */
 313         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 314
 315         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 316         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 317         v |= (1 << 24);
 318         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 319
 320         /*
 321          * Make sure the serial ports are muxed on at this point.
 322          * You have to mux them off in device drivers later on
 323          * if not needed.
 324          */
 325         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 326         omap_board_config = apollon_config;
 327         omap_board_config_size = ARRAY_SIZE(apollon_config);
 328         omap_serial_init();
 329 }
 330
 331 static void __init omap_apollon_map_io(void)
 332 {
 333         omap2_set_globals_242x();
 334         omap2_map_common_io();
 335 }
 336
 337 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 338         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 339         .phys_io        = 0x48000000,
 340         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 341         .boot_params    = 0x80000100,
 342         .map_io         = omap_apollon_map_io,
 343         .init_irq       = omap_apollon_init_irq,
 344         .init_machine   = omap_apollon_init,
 345         .timer          = &omap_timer,
 346 MACHINE_END