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 #include <linux/gpio.h>
  31
  32 #include <mach/hardware.h>
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/flash.h>
  36
  37 #include <plat/led.h>
  38 #include <plat/usb.h>
  39 #include <plat/board.h>
  40 #include <plat/common.h>
  41 #include <plat/gpmc.h>
  42
  43 #include "mux.h"
  44 #include "control.h"
  45
  46 /* LED & Switch macros */
  47 #define LED0_GPIO13             13
  48 #define LED1_GPIO14             14
  49 #define LED2_GPIO15             15
  50 #define SW_ENTER_GPIO16         16
  51 #define SW_UP_GPIO17            17
  52 #define SW_DOWN_GPIO58          58
  53
  54 #define APOLLON_FLASH_CS        0
  55 #define APOLLON_ETH_CS          1
  56 #define APOLLON_ETHR_GPIO_IRQ   74
  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 onenand_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-flash",
 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 smc91x_platdata appolon_smc91x_info = {
 126         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 127         .leda   = RPC_LED_100_10,
 128         .ledb   = RPC_LED_TX_RX,
 129 };
 130
 131 static struct resource apollon_smc91x_resources[] = {
 132         [0] = {
 133                 .flags  = IORESOURCE_MEM,
 134         },
 135         [1] = {
 136                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 137                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 138                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 139         },
 140 };
 141
 142 static struct platform_device apollon_smc91x_device = {
 143         .name           = "smc91x",
 144         .id             = -1,
 145         .dev    = {
 146                 .platform_data  = &appolon_smc91x_info,
 147         },
 148         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 149         .resource       = apollon_smc91x_resources,
 150 };
 151
 152 static struct platform_device apollon_lcd_device = {
 153         .name           = "apollon_lcd",
 154         .id             = -1,
 155 };
 156
 157 static struct omap_led_config apollon_led_config[] = {
 158         {
 159                 .cdev   = {
 160                         .name   = "apollon:led0",
 161                 },
 162                 .gpio   = LED0_GPIO13,
 163         },
 164         {
 165                 .cdev   = {
 166                         .name   = "apollon:led1",
 167                 },
 168                 .gpio   = LED1_GPIO14,
 169         },
 170         {
 171                 .cdev   = {
 172                         .name   = "apollon:led2",
 173                 },
 174                 .gpio   = LED2_GPIO15,
 175         },
 176 };
 177
 178 static struct omap_led_platform_data apollon_led_data = {
 179         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 180         .leds           = apollon_led_config,
 181 };
 182
 183 static struct platform_device apollon_led_device = {
 184         .name           = "omap-led",
 185         .id             = -1,
 186         .dev            = {
 187                 .platform_data  = &apollon_led_data,
 188         },
 189 };
 190
 191 static struct platform_device *apollon_devices[] __initdata = {
 192         &apollon_onenand_device,
 193         &apollon_smc91x_device,
 194         &apollon_lcd_device,
 195         &apollon_led_device,
 196 };
 197
 198 static inline void __init apollon_init_smc91x(void)
 199 {
 200         unsigned long base;
 201
 202         unsigned int rate;
 203         struct clk *gpmc_fck;
 204         int eth_cs;
 205         int err;
 206
 207         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 208         if (IS_ERR(gpmc_fck)) {
 209                 WARN_ON(1);
 210                 return;
 211         }
 212
 213         clk_enable(gpmc_fck);
 214         rate = clk_get_rate(gpmc_fck);
 215
 216         eth_cs = APOLLON_ETH_CS;
 217
 218         /* Make sure CS1 timings are correct */
 219         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 220
 221         if (rate >= 160000000) {
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 226                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 227         } else if (rate >= 130000000) {
 228                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 229                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 230                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 231                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 232                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 233         } else {/* rate = 100000000 */
 234                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 235                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 236                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 237                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 238                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 239         }
 240
 241         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 242                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 243                 goto out;
 244         }
 245         apollon_smc91x_resources[0].start = base + 0x300;
 246         apollon_smc91x_resources[0].end   = base + 0x30f;
 247         udelay(100);
 248
 249         omap_mux_init_gpio(APOLLON_ETHR_GPIO_IRQ, 0);
 250         err = gpio_request_one(APOLLON_ETHR_GPIO_IRQ, GPIOF_IN, "SMC91x irq");
 251         if (err) {
 252                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 253                         APOLLON_ETHR_GPIO_IRQ);
 254                 gpmc_cs_free(APOLLON_ETH_CS);
 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[] __initdata = {
 273         { OMAP_TAG_LCD,         &apollon_lcd_config },
 274 };
 275
 276 static void __init omap_apollon_init_early(void)
 277 {
 278         omap2_init_common_infrastructure();
 279         omap2_init_common_devices(NULL, NULL);
 280 }
 281
 282 static struct gpio apollon_gpio_leds[] __initdata = {
 283         { LED0_GPIO13, GPIOF_OUT_INIT_LOW, "LED0" }, /* LED0 - AA10 */
 284         { LED1_GPIO14, GPIOF_OUT_INIT_LOW, "LED1" }, /* LED1 - AA6  */
 285         { LED2_GPIO15, GPIOF_OUT_INIT_LOW, "LED2" }, /* LED2 - AA4  */
 286 };
 287
 288 static void __init apollon_led_init(void)
 289 {
 290         omap_mux_init_signal("vlynq_clk.gpio_13", 0);
 291         omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
 292         omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
 293
 294         gpio_request_array(apollon_gpio_leds, ARRAY_SIZE(apollon_gpio_leds));
 295 }
 296
 297 static void __init apollon_usb_init(void)
 298 {
 299         /* USB device */
 300         /* DEVICE_SUSPEND */
 301         omap_mux_init_signal("mcbsp2_clkx.gpio_12", 0);
 302         gpio_request_one(12, GPIOF_OUT_INIT_LOW, "USB suspend");
 303         omap2_usbfs_init(&apollon_usb_config);
 304 }
 305
 306 #ifdef CONFIG_OMAP_MUX
 307 static struct omap_board_mux board_mux[] __initdata = {
 308         { .reg_offset = OMAP_MUX_TERMINATOR },
 309 };
 310 #endif
 311
 312 static void __init omap_apollon_init(void)
 313 {
 314         u32 v;
 315
 316         omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
 317         omap_board_config = apollon_config;
 318         omap_board_config_size = ARRAY_SIZE(apollon_config);
 319
 320         apollon_init_smc91x();
 321         apollon_led_init();
 322         apollon_flash_init();
 323         apollon_usb_init();
 324
 325         /* REVISIT: where's the correct place */
 326         omap_mux_init_signal("sys_nirq", OMAP_PULL_ENA | OMAP_PULL_UP);
 327
 328         /* LCD PWR_EN */
 329         omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
 330
 331         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 332         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 333         v |= (1 << 24);
 334         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 335
 336         /*
 337          * Make sure the serial ports are muxed on at this point.
 338          * You have to mux them off in device drivers later on
 339          * if not needed.
 340          */
 341         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 342         omap_serial_init();
 343 }
 344
 345 static void __init omap_apollon_map_io(void)
 346 {
 347         omap2_set_globals_242x();
 348         omap242x_map_common_io();
 349 }
 350
 351 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 352         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 353         .boot_params    = 0x80000100,
 354         .reserve        = omap_reserve,
 355         .map_io         = omap_apollon_map_io,
 356         .init_early     = omap_apollon_init_early,
 357         .init_irq       = omap2_init_irq,
 358         .init_machine   = omap_apollon_init,
 359         .timer          = &omap2_timer,
 360 MACHINE_END