arch/arm/mach-omap2/board-apollon.c

   1 /*
   2  * linux/arch/arm/mach-omap/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/interrupt.h>
  26 #include <linux/delay.h>
  27
  28 #include <asm/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/flash.h>
  32
  33 #include <asm/arch/gpio.h>
  34 #include <asm/arch/mux.h>
  35 #include <asm/arch/usb.h>
  36 #include <asm/arch/board.h>
  37 #include <asm/arch/common.h>
  38 #include "prcm-regs.h"
  39
  40 /* LED & Switch macros */
  41 #define LED0_GPIO13             13
  42 #define LED1_GPIO14             14
  43 #define LED2_GPIO15             15
  44 #define SW_ENTER_GPIO16         16
  45 #define SW_UP_GPIO17            17
  46 #define SW_DOWN_GPIO58          58
  47
  48 static struct mtd_partition apollon_partitions[] = {
  49         {
  50                 .name           = "X-Loader + U-Boot",
  51                 .offset         = 0,
  52                 .size           = SZ_128K,
  53                 .mask_flags     = MTD_WRITEABLE,
  54         },
  55         {
  56                 .name           = "params",
  57                 .offset         = MTDPART_OFS_APPEND,
  58                 .size           = SZ_128K,
  59         },
  60         {
  61                 .name           = "kernel",
  62                 .offset         = MTDPART_OFS_APPEND,
  63                 .size           = SZ_2M,
  64         },
  65         {
  66                 .name           = "rootfs",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = SZ_16M,
  69         },
  70         {
  71                 .name           = "filesystem00",
  72                 .offset         = MTDPART_OFS_APPEND,
  73                 .size           = SZ_32M,
  74         },
  75         {
  76                 .name           = "filesystem01",
  77                 .offset         = MTDPART_OFS_APPEND,
  78                 .size           = MTDPART_SIZ_FULL,
  79         },
  80 };
  81
  82 static struct flash_platform_data apollon_flash_data = {
  83         .parts          = apollon_partitions,
  84         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  85 };
  86
  87 static struct resource apollon_flash_resource = {
  88         .start          = APOLLON_CS0_BASE,
  89         .end            = APOLLON_CS0_BASE + SZ_128K,
  90         .flags          = IORESOURCE_MEM,
  91 };
  92
  93 static struct platform_device apollon_onenand_device = {
  94         .name           = "onenand",
  95         .id             = -1,
  96         .dev            = {
  97                 .platform_data  = &apollon_flash_data,
  98         },
  99         .num_resources  = ARRAY_SIZE(&apollon_flash_resource),
 100         .resource       = &apollon_flash_resource,
 101 };
 102
 103 static struct resource apollon_smc91x_resources[] = {
 104         [0] = {
 105                 .start  = APOLLON_ETHR_START,           /* Physical */
 106                 .end    = APOLLON_ETHR_START + 0xf,
 107                 .flags  = IORESOURCE_MEM,
 108         },
 109         [1] = {
 110                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 111                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 112                 .flags  = IORESOURCE_IRQ,
 113         },
 114 };
 115
 116 static struct platform_device apollon_smc91x_device = {
 117         .name           = "smc91x",
 118         .id             = -1,
 119         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 120         .resource       = apollon_smc91x_resources,
 121 };
 122
 123 static struct platform_device apollon_lcd_device = {
 124         .name           = "apollon_lcd",
 125         .id             = -1,
 126 };
 127
 128 static struct platform_device *apollon_devices[] __initdata = {
 129         &apollon_onenand_device,
 130         &apollon_smc91x_device,
 131         &apollon_lcd_device,
 132 };
 133
 134 static inline void __init apollon_init_smc91x(void)
 135 {
 136         /* Make sure CS1 timings are correct */
 137         GPMC_CONFIG1_1 = 0x00011203;
 138         GPMC_CONFIG2_1 = 0x001f1f01;
 139         GPMC_CONFIG3_1 = 0x00080803;
 140         GPMC_CONFIG4_1 = 0x1c091c09;
 141         GPMC_CONFIG5_1 = 0x041f1f1f;
 142         GPMC_CONFIG6_1 = 0x000004c4;
 143         GPMC_CONFIG7_1 = 0x00000f40 | (APOLLON_CS1_BASE >> 24);
 144         udelay(100);
 145
 146         omap_cfg_reg(W4__24XX_GPIO74);
 147         if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
 148                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 149                         APOLLON_ETHR_GPIO_IRQ);
 150                 return;
 151         }
 152         omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
 153 }
 154
 155 static void __init omap_apollon_init_irq(void)
 156 {
 157         omap2_init_common_hw();
 158         omap_init_irq();
 159         omap_gpio_init();
 160         apollon_init_smc91x();
 161 }
 162
 163 static struct omap_uart_config apollon_uart_config __initdata = {
 164         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 165 };
 166
 167 static struct omap_mmc_config apollon_mmc_config __initdata = {
 168         .mmc [0] = {
 169                 .enabled        = 0,
 170                 .wire4          = 0,
 171                 .wp_pin         = -1,
 172                 .power_pin      = -1,
 173                 .switch_pin     = -1,
 174         },
 175 };
 176
 177 static struct omap_lcd_config apollon_lcd_config __initdata = {
 178         .ctrl_name      = "internal",
 179 };
 180
 181 static struct omap_board_config_kernel apollon_config[] = {
 182         { OMAP_TAG_UART,        &apollon_uart_config },
 183         { OMAP_TAG_MMC,         &apollon_mmc_config },
 184         { OMAP_TAG_LCD,         &apollon_lcd_config },
 185 };
 186
 187 static void __init apollon_led_init(void)
 188 {
 189         /* LED0 - AA10 */
 190         omap_cfg_reg(AA10_242X_GPIO13);
 191         omap_request_gpio(LED0_GPIO13);
 192         omap_set_gpio_direction(LED0_GPIO13, 0);
 193         omap_set_gpio_dataout(LED0_GPIO13, 0);
 194         /* LED1  - AA6 */
 195         omap_cfg_reg(AA6_242X_GPIO14);
 196         omap_request_gpio(LED1_GPIO14);
 197         omap_set_gpio_direction(LED1_GPIO14, 0);
 198         omap_set_gpio_dataout(LED1_GPIO14, 0);
 199         /* LED2  - AA4 */
 200         omap_cfg_reg(AA4_242X_GPIO15);
 201         omap_request_gpio(LED2_GPIO15);
 202         omap_set_gpio_direction(LED2_GPIO15, 0);
 203         omap_set_gpio_dataout(LED2_GPIO15, 0);
 204 }
 205
 206 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored, struct pt_regs *regs)
 207 {
 208         static unsigned int led0, led1, led2;
 209
 210         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
 211                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
 212         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
 213                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
 214         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
 215                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
 216
 217         return IRQ_HANDLED;
 218 }
 219
 220 static void __init apollon_sw_init(void)
 221 {
 222         /* Enter SW - Y11 */
 223         omap_cfg_reg(Y11_242X_GPIO16);
 224         omap_request_gpio(SW_ENTER_GPIO16);
 225         omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
 226         /* Up SW - AA12 */
 227         omap_cfg_reg(AA12_242X_GPIO17);
 228         omap_request_gpio(SW_UP_GPIO17);
 229         omap_set_gpio_direction(SW_UP_GPIO17, 1);
 230         /* Down SW - AA8 */
 231         omap_cfg_reg(AA8_242X_GPIO58);
 232         omap_request_gpio(SW_DOWN_GPIO58);
 233         omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
 234
 235         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
 236         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
 237                                 SA_SHIRQ, "enter sw",
 238                                 &apollon_sw_interrupt))
 239                 return;
 240         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
 241         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
 242                                 SA_SHIRQ, "up sw",
 243                                 &apollon_sw_interrupt))
 244                 return;
 245         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
 246         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
 247                                 SA_SHIRQ, "down sw",
 248                                 &apollon_sw_interrupt))
 249                 return;
 250 }
 251
 252 static void __init omap_apollon_init(void)
 253 {
 254         apollon_led_init();
 255         apollon_sw_init();
 256
 257         /* REVISIT: where's the correct place */
 258         omap_cfg_reg(W19_24XX_SYS_NIRQ);
 259
 260         /*
 261          * Make sure the serial ports are muxed on at this point.
 262          * You have to mux them off in device drivers later on
 263          * if not needed.
 264          */
 265         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 266         omap_board_config = apollon_config;
 267         omap_board_config_size = ARRAY_SIZE(apollon_config);
 268         omap_serial_init();
 269 }
 270
 271 static void __init omap_apollon_map_io(void)
 272 {
 273         omap2_map_common_io();
 274 }
 275
 276 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 277         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 278         .phys_io        = 0x48000000,
 279         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 280         .boot_params    = 0x80000100,
 281         .map_io         = omap_apollon_map_io,
 282         .init_irq       = omap_apollon_init_irq,
 283         .init_machine   = omap_apollon_init,
 284         .timer          = &omap_timer,
 285 MACHINE_END