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/irq.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/delay.h>
  28 #include <linux/leds.h>
  29 #include <linux/err.h>
  30 #include <linux/clk.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 <mach/gpio.h>
  38 #include <mach/led.h>
  39 #include <mach/mux.h>
  40 #include <mach/usb.h>
  41 #include <mach/board.h>
  42 #include <mach/common.h>
  43 #include <mach/gpmc.h>
  44 #include <mach/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
  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 flash_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",
 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 resource apollon_smc91x_resources[] = {
 125         [0] = {
 126                 .flags  = IORESOURCE_MEM,
 127         },
 128         [1] = {
 129                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 130                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 131                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 132         },
 133 };
 134
 135 static struct platform_device apollon_smc91x_device = {
 136         .name           = "smc91x",
 137         .id             = -1,
 138         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 139         .resource       = apollon_smc91x_resources,
 140 };
 141
 142 static struct platform_device apollon_lcd_device = {
 143         .name           = "apollon_lcd",
 144         .id             = -1,
 145 };
 146
 147 static struct omap_led_config apollon_led_config[] = {
 148         {
 149                 .cdev   = {
 150                         .name   = "apollon:led0",
 151                 },
 152                 .gpio   = LED0_GPIO13,
 153         },
 154         {
 155                 .cdev   = {
 156                         .name   = "apollon:led1",
 157                 },
 158                 .gpio   = LED1_GPIO14,
 159         },
 160         {
 161                 .cdev   = {
 162                         .name   = "apollon:led2",
 163                 },
 164                 .gpio   = LED2_GPIO15,
 165         },
 166 };
 167
 168 static struct omap_led_platform_data apollon_led_data = {
 169         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 170         .leds           = apollon_led_config,
 171 };
 172
 173 static struct platform_device apollon_led_device = {
 174         .name           = "omap-led",
 175         .id             = -1,
 176         .dev            = {
 177                 .platform_data  = &apollon_led_data,
 178         },
 179 };
 180
 181 static struct platform_device *apollon_devices[] __initdata = {
 182         &apollon_onenand_device,
 183         &apollon_smc91x_device,
 184         &apollon_lcd_device,
 185         &apollon_led_device,
 186 };
 187
 188 static inline void __init apollon_init_smc91x(void)
 189 {
 190         unsigned long base;
 191
 192         unsigned int rate;
 193         struct clk *gpmc_fck;
 194         int eth_cs;
 195
 196         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 197         if (IS_ERR(gpmc_fck)) {
 198                 WARN_ON(1);
 199                 return;
 200         }
 201
 202         clk_enable(gpmc_fck);
 203         rate = clk_get_rate(gpmc_fck);
 204
 205         eth_cs = APOLLON_ETH_CS;
 206
 207         /* Make sure CS1 timings are correct */
 208         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 209
 210         if (rate >= 160000000) {
 211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 213                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 216         } else if (rate >= 130000000) {
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 219                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 222         } else {/* rate = 100000000 */
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 226                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 227                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 228         }
 229
 230         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 231                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 232                 goto out;
 233         }
 234         apollon_smc91x_resources[0].start = base + 0x300;
 235         apollon_smc91x_resources[0].end   = base + 0x30f;
 236         udelay(100);
 237
 238         omap_cfg_reg(W4__24XX_GPIO74);
 239         if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 240                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 241                         APOLLON_ETHR_GPIO_IRQ);
 242                 gpmc_cs_free(APOLLON_ETH_CS);
 243                 goto out;
 244         }
 245         gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
 246
 247 out:
 248         clk_disable(gpmc_fck);
 249         clk_put(gpmc_fck);
 250 }
 251
 252 static void __init omap_apollon_init_irq(void)
 253 {
 254         omap2_init_common_hw();
 255         omap_init_irq();
 256         omap_gpio_init();
 257         apollon_init_smc91x();
 258 }
 259
 260 static struct omap_uart_config apollon_uart_config __initdata = {
 261         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 262 };
 263
 264 static struct omap_usb_config apollon_usb_config __initdata = {
 265         .register_dev   = 1,
 266         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 267
 268         .pins[0]        = 6,
 269 };
 270
 271 static struct omap_lcd_config apollon_lcd_config __initdata = {
 272         .ctrl_name      = "internal",
 273 };
 274
 275 static struct omap_board_config_kernel apollon_config[] = {
 276         { OMAP_TAG_UART,        &apollon_uart_config },
 277         { OMAP_TAG_USB,         &apollon_usb_config },
 278         { OMAP_TAG_LCD,         &apollon_lcd_config },
 279 };
 280
 281 static void __init apollon_led_init(void)
 282 {
 283         /* LED0 - AA10 */
 284         omap_cfg_reg(AA10_242X_GPIO13);
 285         omap_request_gpio(LED0_GPIO13);
 286         omap_set_gpio_direction(LED0_GPIO13, 0);
 287         omap_set_gpio_dataout(LED0_GPIO13, 0);
 288         /* LED1  - AA6 */
 289         omap_cfg_reg(AA6_242X_GPIO14);
 290         omap_request_gpio(LED1_GPIO14);
 291         omap_set_gpio_direction(LED1_GPIO14, 0);
 292         omap_set_gpio_dataout(LED1_GPIO14, 0);
 293         /* LED2  - AA4 */
 294         omap_cfg_reg(AA4_242X_GPIO15);
 295         omap_request_gpio(LED2_GPIO15);
 296         omap_set_gpio_direction(LED2_GPIO15, 0);
 297         omap_set_gpio_dataout(LED2_GPIO15, 0);
 298 }
 299
 300 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
 301 {
 302         static unsigned int led0, led1, led2;
 303
 304         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
 305                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
 306         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
 307                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
 308         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
 309                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
 310
 311         return IRQ_HANDLED;
 312 }
 313
 314 static void __init apollon_sw_init(void)
 315 {
 316         /* Enter SW - Y11 */
 317         omap_cfg_reg(Y11_242X_GPIO16);
 318         omap_request_gpio(SW_ENTER_GPIO16);
 319         gpio_direction_input(SW_ENTER_GPIO16);
 320         /* Up SW - AA12 */
 321         omap_cfg_reg(AA12_242X_GPIO17);
 322         omap_request_gpio(SW_UP_GPIO17);
 323         gpio_direction_input(SW_UP_GPIO17);
 324         /* Down SW - AA8 */
 325         omap_cfg_reg(AA8_242X_GPIO58);
 326         omap_request_gpio(SW_DOWN_GPIO58);
 327         gpio_direction_input(SW_DOWN_GPIO58);
 328
 329         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQ_TYPE_EDGE_RISING);
 330         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
 331                                 IRQF_SHARED, "enter sw",
 332                                 &apollon_sw_interrupt))
 333                 return;
 334         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQ_TYPE_EDGE_RISING);
 335         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
 336                                 IRQF_SHARED, "up sw",
 337                                 &apollon_sw_interrupt))
 338                 return;
 339         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQ_TYPE_EDGE_RISING);
 340         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
 341                                 IRQF_SHARED, "down sw",
 342                                 &apollon_sw_interrupt))
 343                 return;
 344 }
 345
 346 static void __init apollon_usb_init(void)
 347 {
 348         /* USB device */
 349         /* DEVICE_SUSPEND */
 350         omap_cfg_reg(P21_242X_GPIO12);
 351         gpio_request(12, "USB suspend");
 352         gpio_direction_output(12, 0);
 353 }
 354
 355 static void __init omap_apollon_init(void)
 356 {
 357         u32 v;
 358
 359         apollon_led_init();
 360         apollon_sw_init();
 361         apollon_flash_init();
 362         apollon_usb_init();
 363
 364         /* REVISIT: where's the correct place */
 365         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 366
 367         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 368         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 369         v |= (1 << 24);
 370         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 371
 372         /*
 373          * Make sure the serial ports are muxed on at this point.
 374          * You have to mux them off in device drivers later on
 375          * if not needed.
 376          */
 377         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 378         omap_board_config = apollon_config;
 379         omap_board_config_size = ARRAY_SIZE(apollon_config);
 380         omap_serial_init();
 381 }
 382
 383 static void __init omap_apollon_map_io(void)
 384 {
 385         omap2_set_globals_242x();
 386         omap2_map_common_io();
 387 }
 388
 389 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 390         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 391         .phys_io        = 0x48000000,
 392         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 393         .boot_params    = 0x80000100,
 394         .map_io         = omap_apollon_map_io,
 395         .init_irq       = omap_apollon_init_irq,
 396         .init_machine   = omap_apollon_init,
 397         .timer          = &omap_timer,
 398 MACHINE_END