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
  29 #include <asm/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/flash.h>
  33
  34 #include <asm/arch/gpio.h>
  35 #include <asm/arch/mux.h>
  36 #include <asm/arch/usb.h>
  37 #include <asm/arch/board.h>
  38 #include <asm/arch/common.h>
  39 #include "prcm-regs.h"
  40
  41 /* LED & Switch macros */
  42 #define LED0_GPIO13             13
  43 #define LED1_GPIO14             14
  44 #define LED2_GPIO15             15
  45 #define SW_ENTER_GPIO16         16
  46 #define SW_UP_GPIO17            17
  47 #define SW_DOWN_GPIO58          58
  48
  49 static struct mtd_partition apollon_partitions[] = {
  50         {
  51                 .name           = "X-Loader + U-Boot",
  52                 .offset         = 0,
  53                 .size           = SZ_128K,
  54                 .mask_flags     = MTD_WRITEABLE,
  55         },
  56         {
  57                 .name           = "params",
  58                 .offset         = MTDPART_OFS_APPEND,
  59                 .size           = SZ_128K,
  60         },
  61         {
  62                 .name           = "kernel",
  63                 .offset         = MTDPART_OFS_APPEND,
  64                 .size           = SZ_2M,
  65         },
  66         {
  67                 .name           = "rootfs",
  68                 .offset         = MTDPART_OFS_APPEND,
  69                 .size           = SZ_16M,
  70         },
  71         {
  72                 .name           = "filesystem00",
  73                 .offset         = MTDPART_OFS_APPEND,
  74                 .size           = SZ_32M,
  75         },
  76         {
  77                 .name           = "filesystem01",
  78                 .offset         = MTDPART_OFS_APPEND,
  79                 .size           = MTDPART_SIZ_FULL,
  80         },
  81 };
  82
  83 static struct flash_platform_data apollon_flash_data = {
  84         .parts          = apollon_partitions,
  85         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  86 };
  87
  88 static struct resource apollon_flash_resource = {
  89         .start          = APOLLON_CS0_BASE,
  90         .end            = APOLLON_CS0_BASE + SZ_128K,
  91         .flags          = IORESOURCE_MEM,
  92 };
  93
  94 static struct platform_device apollon_onenand_device = {
  95         .name           = "onenand",
  96         .id             = -1,
  97         .dev            = {
  98                 .platform_data  = &apollon_flash_data,
  99         },
 100         .num_resources  = ARRAY_SIZE(&apollon_flash_resource),
 101         .resource       = &apollon_flash_resource,
 102 };
 103
 104 static struct resource apollon_smc91x_resources[] = {
 105         [0] = {
 106                 .start  = APOLLON_ETHR_START,           /* Physical */
 107                 .end    = APOLLON_ETHR_START + 0xf,
 108                 .flags  = IORESOURCE_MEM,
 109         },
 110         [1] = {
 111                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 112                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 113                 .flags  = IORESOURCE_IRQ,
 114         },
 115 };
 116
 117 static struct platform_device apollon_smc91x_device = {
 118         .name           = "smc91x",
 119         .id             = -1,
 120         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 121         .resource       = apollon_smc91x_resources,
 122 };
 123
 124 static struct platform_device apollon_lcd_device = {
 125         .name           = "apollon_lcd",
 126         .id             = -1,
 127 };
 128
 129 static struct platform_device *apollon_devices[] __initdata = {
 130         &apollon_onenand_device,
 131         &apollon_smc91x_device,
 132         &apollon_lcd_device,
 133 };
 134
 135 static inline void __init apollon_init_smc91x(void)
 136 {
 137         /* Make sure CS1 timings are correct */
 138         GPMC_CONFIG1_1 = 0x00011203;
 139         GPMC_CONFIG2_1 = 0x001f1f01;
 140         GPMC_CONFIG3_1 = 0x00080803;
 141         GPMC_CONFIG4_1 = 0x1c091c09;
 142         GPMC_CONFIG5_1 = 0x041f1f1f;
 143         GPMC_CONFIG6_1 = 0x000004c4;
 144         GPMC_CONFIG7_1 = 0x00000f40 | (APOLLON_CS1_BASE >> 24);
 145         udelay(100);
 146
 147         omap_cfg_reg(W4__24XX_GPIO74);
 148         if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
 149                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 150                         APOLLON_ETHR_GPIO_IRQ);
 151                 return;
 152         }
 153         omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
 154 }
 155
 156 static void __init omap_apollon_init_irq(void)
 157 {
 158         omap2_init_common_hw();
 159         omap_init_irq();
 160         omap_gpio_init();
 161         apollon_init_smc91x();
 162 }
 163
 164 static struct omap_uart_config apollon_uart_config __initdata = {
 165         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 166 };
 167
 168 static struct omap_mmc_config apollon_mmc_config __initdata = {
 169         .mmc [0] = {
 170                 .enabled        = 1,
 171                 .wire4          = 1,
 172                 .wp_pin         = -1,
 173                 .power_pin      = -1,
 174                 .switch_pin     = -1,
 175         },
 176 };
 177
 178 static struct omap_lcd_config apollon_lcd_config __initdata = {
 179         .ctrl_name      = "internal",
 180 };
 181
 182 static struct omap_board_config_kernel apollon_config[] = {
 183         { OMAP_TAG_UART,        &apollon_uart_config },
 184         { OMAP_TAG_MMC,         &apollon_mmc_config },
 185         { OMAP_TAG_LCD,         &apollon_lcd_config },
 186 };
 187
 188 static void __init apollon_led_init(void)
 189 {
 190         /* LED0 - AA10 */
 191         omap_cfg_reg(AA10_242X_GPIO13);
 192         omap_request_gpio(LED0_GPIO13);
 193         omap_set_gpio_direction(LED0_GPIO13, 0);
 194         omap_set_gpio_dataout(LED0_GPIO13, 0);
 195         /* LED1  - AA6 */
 196         omap_cfg_reg(AA6_242X_GPIO14);
 197         omap_request_gpio(LED1_GPIO14);
 198         omap_set_gpio_direction(LED1_GPIO14, 0);
 199         omap_set_gpio_dataout(LED1_GPIO14, 0);
 200         /* LED2  - AA4 */
 201         omap_cfg_reg(AA4_242X_GPIO15);
 202         omap_request_gpio(LED2_GPIO15);
 203         omap_set_gpio_direction(LED2_GPIO15, 0);
 204         omap_set_gpio_dataout(LED2_GPIO15, 0);
 205 }
 206
 207 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
 208 {
 209         static unsigned int led0, led1, led2;
 210
 211         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
 212                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
 213         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
 214                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
 215         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
 216                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
 217
 218         return IRQ_HANDLED;
 219 }
 220
 221 static void __init apollon_sw_init(void)
 222 {
 223         /* Enter SW - Y11 */
 224         omap_cfg_reg(Y11_242X_GPIO16);
 225         omap_request_gpio(SW_ENTER_GPIO16);
 226         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
 227         /* Up SW - AA12 */
 228         omap_cfg_reg(AA12_242X_GPIO17);
 229         omap_request_gpio(SW_UP_GPIO17);
 230         omap_set_gpio_direction(SW_UP_GPIO17, 1);
 231         /* Down SW - AA8 */
 232         omap_cfg_reg(AA8_242X_GPIO58);
 233         omap_request_gpio(SW_DOWN_GPIO58);
 234         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
 235
 236         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
 237         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
 238                                 IRQF_SHARED, "enter sw",
 239                                 &apollon_sw_interrupt))
 240                 return;
 241         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
 242         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
 243                                 IRQF_SHARED, "up sw",
 244                                 &apollon_sw_interrupt))
 245                 return;
 246         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
 247         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
 248                                 IRQF_SHARED, "down sw",
 249                                 &apollon_sw_interrupt))
 250                 return;
 251 }
 252
 253 static void __init omap_apollon_init(void)
 254 {
 255         apollon_led_init();
 256         apollon_sw_init();
 257
 258         /* REVISIT: where's the correct place */
 259         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 260
 261         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 262         CONTROL_DEVCONF |= (1 << 24);
 263
 264         /*
 265          * Make sure the serial ports are muxed on at this point.
 266          * You have to mux them off in device drivers later on
 267          * if not needed.
 268          */
 269         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 270         omap_board_config = apollon_config;
 271         omap_board_config_size = ARRAY_SIZE(apollon_config);
 272         omap_serial_init();
 273 }
 274
 275 static void __init omap_apollon_map_io(void)
 276 {
 277         omap2_map_common_io();
 278 }
 279
 280 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 281         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 282         .phys_io        = 0x48000000,
 283         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 284         .boot_params    = 0x80000100,
 285         .map_io         = omap_apollon_map_io,
 286         .init_irq       = omap_apollon_init_irq,
 287         .init_machine   = omap_apollon_init,
 288         .timer          = &omap_timer,
 289 MACHINE_END