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 #include <linux/smc91x.h>
  30
  31 #include <mach/hardware.h>
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/flash.h>
  35
  36 #include <mach/gpio.h>
  37 #include <plat/led.h>
  38 #include <plat/mux.h>
  39 #include <plat/usb.h>
  40 #include <plat/board.h>
  41 #include <plat/common.h>
  42 #include <plat/gpmc.h>
  43 #include <plat/control.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 #define APOLLON_ETHR_GPIO_IRQ   74
  56
  57 static struct mtd_partition apollon_partitions[] = {
  58         {
  59                 .name           = "X-Loader + U-Boot",
  60                 .offset         = 0,
  61                 .size           = SZ_128K,
  62                 .mask_flags     = MTD_WRITEABLE,
  63         },
  64         {
  65                 .name           = "params",
  66                 .offset         = MTDPART_OFS_APPEND,
  67                 .size           = SZ_128K,
  68         },
  69         {
  70                 .name           = "kernel",
  71                 .offset         = MTDPART_OFS_APPEND,
  72                 .size           = SZ_2M,
  73         },
  74         {
  75                 .name           = "rootfs",
  76                 .offset         = MTDPART_OFS_APPEND,
  77                 .size           = SZ_16M,
  78         },
  79         {
  80                 .name           = "filesystem00",
  81                 .offset         = MTDPART_OFS_APPEND,
  82                 .size           = SZ_32M,
  83         },
  84         {
  85                 .name           = "filesystem01",
  86                 .offset         = MTDPART_OFS_APPEND,
  87                 .size           = MTDPART_SIZ_FULL,
  88         },
  89 };
  90
  91 static struct onenand_platform_data apollon_flash_data = {
  92         .parts          = apollon_partitions,
  93         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  94 };
  95
  96 static struct resource apollon_flash_resource[] = {
  97         [0] = {
  98                 .flags          = IORESOURCE_MEM,
  99         },
 100 };
 101
 102 static struct platform_device apollon_onenand_device = {
 103         .name           = "onenand-flash",
 104         .id             = -1,
 105         .dev            = {
 106                 .platform_data  = &apollon_flash_data,
 107         },
 108         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
 109         .resource       = apollon_flash_resource,
 110 };
 111
 112 static void __init apollon_flash_init(void)
 113 {
 114         unsigned long base;
 115
 116         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
 117                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
 118                 return;
 119         }
 120         apollon_flash_resource[0].start = base;
 121         apollon_flash_resource[0].end   = base + SZ_128K - 1;
 122 }
 123
 124 static struct smc91x_platdata appolon_smc91x_info = {
 125         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 126         .leda   = RPC_LED_100_10,
 127         .ledb   = RPC_LED_TX_RX,
 128 };
 129
 130 static struct resource apollon_smc91x_resources[] = {
 131         [0] = {
 132                 .flags  = IORESOURCE_MEM,
 133         },
 134         [1] = {
 135                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 136                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 137                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 138         },
 139 };
 140
 141 static struct platform_device apollon_smc91x_device = {
 142         .name           = "smc91x",
 143         .id             = -1,
 144         .dev    = {
 145                 .platform_data  = &appolon_smc91x_info,
 146         },
 147         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 148         .resource       = apollon_smc91x_resources,
 149 };
 150
 151 static struct platform_device apollon_lcd_device = {
 152         .name           = "apollon_lcd",
 153         .id             = -1,
 154 };
 155
 156 static struct omap_led_config apollon_led_config[] = {
 157         {
 158                 .cdev   = {
 159                         .name   = "apollon:led0",
 160                 },
 161                 .gpio   = LED0_GPIO13,
 162         },
 163         {
 164                 .cdev   = {
 165                         .name   = "apollon:led1",
 166                 },
 167                 .gpio   = LED1_GPIO14,
 168         },
 169         {
 170                 .cdev   = {
 171                         .name   = "apollon:led2",
 172                 },
 173                 .gpio   = LED2_GPIO15,
 174         },
 175 };
 176
 177 static struct omap_led_platform_data apollon_led_data = {
 178         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 179         .leds           = apollon_led_config,
 180 };
 181
 182 static struct platform_device apollon_led_device = {
 183         .name           = "omap-led",
 184         .id             = -1,
 185         .dev            = {
 186                 .platform_data  = &apollon_led_data,
 187         },
 188 };
 189
 190 static struct platform_device *apollon_devices[] __initdata = {
 191         &apollon_onenand_device,
 192         &apollon_smc91x_device,
 193         &apollon_lcd_device,
 194         &apollon_led_device,
 195 };
 196
 197 static inline void __init apollon_init_smc91x(void)
 198 {
 199         unsigned long base;
 200
 201         unsigned int rate;
 202         struct clk *gpmc_fck;
 203         int eth_cs;
 204
 205         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 206         if (IS_ERR(gpmc_fck)) {
 207                 WARN_ON(1);
 208                 return;
 209         }
 210
 211         clk_enable(gpmc_fck);
 212         rate = clk_get_rate(gpmc_fck);
 213
 214         eth_cs = APOLLON_ETH_CS;
 215
 216         /* Make sure CS1 timings are correct */
 217         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 218
 219         if (rate >= 160000000) {
 220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 225         } else if (rate >= 130000000) {
 226                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 227                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 228                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 229                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 230                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 231         } else {/* rate = 100000000 */
 232                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 233                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 234                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 235                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 236                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 237         }
 238
 239         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 240                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 241                 goto out;
 242         }
 243         apollon_smc91x_resources[0].start = base + 0x300;
 244         apollon_smc91x_resources[0].end   = base + 0x30f;
 245         udelay(100);
 246
 247         omap_cfg_reg(W4__24XX_GPIO74);
 248         if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 249                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 250                         APOLLON_ETHR_GPIO_IRQ);
 251                 gpmc_cs_free(APOLLON_ETH_CS);
 252                 goto out;
 253         }
 254         gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
 255
 256 out:
 257         clk_disable(gpmc_fck);
 258         clk_put(gpmc_fck);
 259 }
 260
 261 static struct omap_usb_config apollon_usb_config __initdata = {
 262         .register_dev   = 1,
 263         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 264
 265         .pins[0]        = 6,
 266 };
 267
 268 static struct omap_lcd_config apollon_lcd_config __initdata = {
 269         .ctrl_name      = "internal",
 270 };
 271
 272 static struct omap_board_config_kernel apollon_config[] = {
 273         { OMAP_TAG_LCD,         &apollon_lcd_config },
 274 };
 275
 276 static void __init omap_apollon_init_irq(void)
 277 {
 278         omap_board_config = apollon_config;
 279         omap_board_config_size = ARRAY_SIZE(apollon_config);
 280         omap2_init_common_hw(NULL, NULL);
 281         omap_init_irq();
 282         omap_gpio_init();
 283         apollon_init_smc91x();
 284 }
 285
 286 static void __init apollon_led_init(void)
 287 {
 288         /* LED0 - AA10 */
 289         omap_cfg_reg(AA10_242X_GPIO13);
 290         gpio_request(LED0_GPIO13, "LED0");
 291         gpio_direction_output(LED0_GPIO13, 0);
 292         /* LED1  - AA6 */
 293         omap_cfg_reg(AA6_242X_GPIO14);
 294         gpio_request(LED1_GPIO14, "LED1");
 295         gpio_direction_output(LED1_GPIO14, 0);
 296         /* LED2  - AA4 */
 297         omap_cfg_reg(AA4_242X_GPIO15);
 298         gpio_request(LED2_GPIO15, "LED2");
 299         gpio_direction_output(LED2_GPIO15, 0);
 300 }
 301
 302 static void __init apollon_usb_init(void)
 303 {
 304         /* USB device */
 305         /* DEVICE_SUSPEND */
 306         omap_cfg_reg(P21_242X_GPIO12);
 307         gpio_request(12, "USB suspend");
 308         gpio_direction_output(12, 0);
 309         omap_usb_init(&apollon_usb_config);
 310 }
 311
 312 static void __init omap_apollon_init(void)
 313 {
 314         u32 v;
 315
 316         apollon_led_init();
 317         apollon_flash_init();
 318         apollon_usb_init();
 319
 320         /* REVISIT: where's the correct place */
 321         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 322
 323         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 324         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 325         v |= (1 << 24);
 326         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 327
 328         /*
 329          * Make sure the serial ports are muxed on at this point.
 330          * You have to mux them off in device drivers later on
 331          * if not needed.
 332          */
 333         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 334         omap_serial_init();
 335 }
 336
 337 static void __init omap_apollon_map_io(void)
 338 {
 339         omap2_set_globals_242x();
 340         omap242x_map_common_io();
 341 }
 342
 343 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 344         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 345         .phys_io        = 0x48000000,
 346         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 347         .boot_params    = 0x80000100,
 348         .map_io         = omap_apollon_map_io,
 349         .init_irq       = omap_apollon_init_irq,
 350         .init_machine   = omap_apollon_init,
 351         .timer          = &omap_timer,
 352 MACHINE_END