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 #include <linux/platform_data/leds-omap.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/flash.h>
  36
  37 #include "common.h"
  38 #include "gpmc.h"
  39
  40 #include <video/omapdss.h>
  41 #include <video/omap-panel-generic-dpi.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                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 137         },
 138 };
 139
 140 static struct platform_device apollon_smc91x_device = {
 141         .name           = "smc91x",
 142         .id             = -1,
 143         .dev    = {
 144                 .platform_data  = &appolon_smc91x_info,
 145         },
 146         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 147         .resource       = apollon_smc91x_resources,
 148 };
 149
 150 static struct omap_led_config apollon_led_config[] = {
 151         {
 152                 .cdev   = {
 153                         .name   = "apollon:led0",
 154                 },
 155                 .gpio   = LED0_GPIO13,
 156         },
 157         {
 158                 .cdev   = {
 159                         .name   = "apollon:led1",
 160                 },
 161                 .gpio   = LED1_GPIO14,
 162         },
 163         {
 164                 .cdev   = {
 165                         .name   = "apollon:led2",
 166                 },
 167                 .gpio   = LED2_GPIO15,
 168         },
 169 };
 170
 171 static struct omap_led_platform_data apollon_led_data = {
 172         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 173         .leds           = apollon_led_config,
 174 };
 175
 176 static struct platform_device apollon_led_device = {
 177         .name           = "omap-led",
 178         .id             = -1,
 179         .dev            = {
 180                 .platform_data  = &apollon_led_data,
 181         },
 182 };
 183
 184 static struct platform_device *apollon_devices[] __initdata = {
 185         &apollon_onenand_device,
 186         &apollon_smc91x_device,
 187         &apollon_led_device,
 188 };
 189
 190 static inline void __init apollon_init_smc91x(void)
 191 {
 192         unsigned long base;
 193
 194         unsigned int rate;
 195         struct clk *gpmc_fck;
 196         int eth_cs;
 197         int err;
 198
 199         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 200         if (IS_ERR(gpmc_fck)) {
 201                 WARN_ON(1);
 202                 return;
 203         }
 204
 205         clk_prepare_enable(gpmc_fck);
 206         rate = clk_get_rate(gpmc_fck);
 207
 208         eth_cs = APOLLON_ETH_CS;
 209
 210         /* Make sure CS1 timings are correct */
 211         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 212
 213         if (rate >= 160000000) {
 214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 219         } else if (rate >= 130000000) {
 220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 225         } else {/* rate = 100000000 */
 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, 0x031A1F1F);
 230                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 231         }
 232
 233         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 234                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 235                 goto out;
 236         }
 237         apollon_smc91x_resources[0].start = base + 0x300;
 238         apollon_smc91x_resources[0].end   = base + 0x30f;
 239         udelay(100);
 240
 241         omap_mux_init_gpio(APOLLON_ETHR_GPIO_IRQ, 0);
 242         err = gpio_request_one(APOLLON_ETHR_GPIO_IRQ, GPIOF_IN, "SMC91x irq");
 243         if (err) {
 244                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 245                         APOLLON_ETHR_GPIO_IRQ);
 246                 gpmc_cs_free(APOLLON_ETH_CS);
 247         }
 248 out:
 249         clk_disable_unprepare(gpmc_fck);
 250         clk_put(gpmc_fck);
 251 }
 252
 253 static struct panel_generic_dpi_data apollon_panel_data = {
 254         .name                   = "apollon",
 255 };
 256
 257 static struct omap_dss_device apollon_lcd_device = {
 258         .name                   = "lcd",
 259         .driver_name            = "generic_dpi_panel",
 260         .type                   = OMAP_DISPLAY_TYPE_DPI,
 261         .phy.dpi.data_lines     = 18,
 262         .data                   = &apollon_panel_data,
 263 };
 264
 265 static struct omap_dss_device *apollon_dss_devices[] = {
 266         &apollon_lcd_device,
 267 };
 268
 269 static struct omap_dss_board_info apollon_dss_data = {
 270         .num_devices    = ARRAY_SIZE(apollon_dss_devices),
 271         .devices        = apollon_dss_devices,
 272         .default_device = &apollon_lcd_device,
 273 };
 274
 275 static struct gpio apollon_gpio_leds[] __initdata = {
 276         { LED0_GPIO13, GPIOF_OUT_INIT_LOW, "LED0" }, /* LED0 - AA10 */
 277         { LED1_GPIO14, GPIOF_OUT_INIT_LOW, "LED1" }, /* LED1 - AA6  */
 278         { LED2_GPIO15, GPIOF_OUT_INIT_LOW, "LED2" }, /* LED2 - AA4  */
 279 };
 280
 281 static void __init apollon_led_init(void)
 282 {
 283         omap_mux_init_signal("vlynq_clk.gpio_13", 0);
 284         omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
 285         omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
 286
 287         gpio_request_array(apollon_gpio_leds, ARRAY_SIZE(apollon_gpio_leds));
 288 }
 289
 290 #ifdef CONFIG_OMAP_MUX
 291 static struct omap_board_mux board_mux[] __initdata = {
 292         { .reg_offset = OMAP_MUX_TERMINATOR },
 293 };
 294 #endif
 295
 296 static void __init omap_apollon_init(void)
 297 {
 298         u32 v;
 299
 300         omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
 301
 302         apollon_init_smc91x();
 303         apollon_led_init();
 304         apollon_flash_init();
 305
 306         /* REVISIT: where's the correct place */
 307         omap_mux_init_signal("sys_nirq", OMAP_PULL_ENA | OMAP_PULL_UP);
 308
 309         /* LCD PWR_EN */
 310         omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
 311
 312         /* Use Internal loop-back in MMC/SDIO Module Input Clock selection */
 313         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 314         v |= (1 << 24);
 315         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 316
 317         /*
 318          * Make sure the serial ports are muxed on at this point.
 319          * You have to mux them off in device drivers later on
 320          * if not needed.
 321          */
 322         apollon_smc91x_resources[1].start = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
 323         apollon_smc91x_resources[1].end = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
 324         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 325         omap_serial_init();
 326         omap_sdrc_init(NULL, NULL);
 327         omap_display_init(&apollon_dss_data);
 328 }
 329
 330 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 331         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 332         .atag_offset    = 0x100,
 333         .reserve        = omap_reserve,
 334         .map_io         = omap242x_map_io,
 335         .init_early     = omap2420_init_early,
 336         .init_irq       = omap2_init_irq,
 337         .handle_irq     = omap2_intc_handle_irq,
 338         .init_machine   = omap_apollon_init,
 339         .init_late      = omap2420_init_late,
 340         .timer          = &omap2_timer,
 341         .restart        = omap2xxx_restart,
 342 MACHINE_END