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 "common.h"
  39 #include <plat/gpmc.h>
  40
  41 #include <video/omapdss.h>
  42 #include <video/omap-panel-generic-dpi.h>
  43
  44 #include "mux.h"
  45 #include "control.h"
  46
  47 /* LED & Switch macros */
  48 #define LED0_GPIO13             13
  49 #define LED1_GPIO14             14
  50 #define LED2_GPIO15             15
  51 #define SW_ENTER_GPIO16         16
  52 #define SW_UP_GPIO17            17
  53 #define SW_DOWN_GPIO58          58
  54
  55 #define APOLLON_FLASH_CS        0
  56 #define APOLLON_ETH_CS          1
  57 #define APOLLON_ETHR_GPIO_IRQ   74
  58
  59 static struct mtd_partition apollon_partitions[] = {
  60         {
  61                 .name           = "X-Loader + U-Boot",
  62                 .offset         = 0,
  63                 .size           = SZ_128K,
  64                 .mask_flags     = MTD_WRITEABLE,
  65         },
  66         {
  67                 .name           = "params",
  68                 .offset         = MTDPART_OFS_APPEND,
  69                 .size           = SZ_128K,
  70         },
  71         {
  72                 .name           = "kernel",
  73                 .offset         = MTDPART_OFS_APPEND,
  74                 .size           = SZ_2M,
  75         },
  76         {
  77                 .name           = "rootfs",
  78                 .offset         = MTDPART_OFS_APPEND,
  79                 .size           = SZ_16M,
  80         },
  81         {
  82                 .name           = "filesystem00",
  83                 .offset         = MTDPART_OFS_APPEND,
  84                 .size           = SZ_32M,
  85         },
  86         {
  87                 .name           = "filesystem01",
  88                 .offset         = MTDPART_OFS_APPEND,
  89                 .size           = MTDPART_SIZ_FULL,
  90         },
  91 };
  92
  93 static struct onenand_platform_data apollon_flash_data = {
  94         .parts          = apollon_partitions,
  95         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  96 };
  97
  98 static struct resource apollon_flash_resource[] = {
  99         [0] = {
 100                 .flags          = IORESOURCE_MEM,
 101         },
 102 };
 103
 104 static struct platform_device apollon_onenand_device = {
 105         .name           = "onenand-flash",
 106         .id             = -1,
 107         .dev            = {
 108                 .platform_data  = &apollon_flash_data,
 109         },
 110         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
 111         .resource       = apollon_flash_resource,
 112 };
 113
 114 static void __init apollon_flash_init(void)
 115 {
 116         unsigned long base;
 117
 118         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
 119                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
 120                 return;
 121         }
 122         apollon_flash_resource[0].start = base;
 123         apollon_flash_resource[0].end   = base + SZ_128K - 1;
 124 }
 125
 126 static struct smc91x_platdata appolon_smc91x_info = {
 127         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 128         .leda   = RPC_LED_100_10,
 129         .ledb   = RPC_LED_TX_RX,
 130 };
 131
 132 static struct resource apollon_smc91x_resources[] = {
 133         [0] = {
 134                 .flags  = IORESOURCE_MEM,
 135         },
 136         [1] = {
 137                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 138         },
 139 };
 140
 141 static struct platform_device apollon_smc91x_device = {
 142         .name           = "smc91x",
 143         .id             = -1,
 144         .dev    = {
 145                 .platform_data  = &appolon_smc91x_info,
 146         },
 147         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 148         .resource       = apollon_smc91x_resources,
 149 };
 150
 151 static struct omap_led_config apollon_led_config[] = {
 152         {
 153                 .cdev   = {
 154                         .name   = "apollon:led0",
 155                 },
 156                 .gpio   = LED0_GPIO13,
 157         },
 158         {
 159                 .cdev   = {
 160                         .name   = "apollon:led1",
 161                 },
 162                 .gpio   = LED1_GPIO14,
 163         },
 164         {
 165                 .cdev   = {
 166                         .name   = "apollon:led2",
 167                 },
 168                 .gpio   = LED2_GPIO15,
 169         },
 170 };
 171
 172 static struct omap_led_platform_data apollon_led_data = {
 173         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 174         .leds           = apollon_led_config,
 175 };
 176
 177 static struct platform_device apollon_led_device = {
 178         .name           = "omap-led",
 179         .id             = -1,
 180         .dev            = {
 181                 .platform_data  = &apollon_led_data,
 182         },
 183 };
 184
 185 static struct platform_device *apollon_devices[] __initdata = {
 186         &apollon_onenand_device,
 187         &apollon_smc91x_device,
 188         &apollon_led_device,
 189 };
 190
 191 static inline void __init apollon_init_smc91x(void)
 192 {
 193         unsigned long base;
 194
 195         unsigned int rate;
 196         struct clk *gpmc_fck;
 197         int eth_cs;
 198         int err;
 199
 200         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 201         if (IS_ERR(gpmc_fck)) {
 202                 WARN_ON(1);
 203                 return;
 204         }
 205
 206         clk_enable(gpmc_fck);
 207         rate = clk_get_rate(gpmc_fck);
 208
 209         eth_cs = APOLLON_ETH_CS;
 210
 211         /* Make sure CS1 timings are correct */
 212         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 213
 214         if (rate >= 160000000) {
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 219                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 220         } else if (rate >= 130000000) {
 221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 222                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 226         } else {/* rate = 100000000 */
 227                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 228                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 229                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 230                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 231                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 232         }
 233
 234         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
 235                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 236                 goto out;
 237         }
 238         apollon_smc91x_resources[0].start = base + 0x300;
 239         apollon_smc91x_resources[0].end   = base + 0x30f;
 240         udelay(100);
 241
 242         omap_mux_init_gpio(APOLLON_ETHR_GPIO_IRQ, 0);
 243         err = gpio_request_one(APOLLON_ETHR_GPIO_IRQ, GPIOF_IN, "SMC91x irq");
 244         if (err) {
 245                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 246                         APOLLON_ETHR_GPIO_IRQ);
 247                 gpmc_cs_free(APOLLON_ETH_CS);
 248         }
 249 out:
 250         clk_disable(gpmc_fck);
 251         clk_put(gpmc_fck);
 252 }
 253
 254 static struct panel_generic_dpi_data apollon_panel_data = {
 255         .name                   = "apollon",
 256 };
 257
 258 static struct omap_dss_device apollon_lcd_device = {
 259         .name                   = "lcd",
 260         .driver_name            = "generic_dpi_panel",
 261         .type                   = OMAP_DISPLAY_TYPE_DPI,
 262         .phy.dpi.data_lines     = 18,
 263         .data                   = &apollon_panel_data,
 264 };
 265
 266 static struct omap_dss_device *apollon_dss_devices[] = {
 267         &apollon_lcd_device,
 268 };
 269
 270 static struct omap_dss_board_info apollon_dss_data = {
 271         .num_devices    = ARRAY_SIZE(apollon_dss_devices),
 272         .devices        = apollon_dss_devices,
 273         .default_device = &apollon_lcd_device,
 274 };
 275
 276 static struct gpio apollon_gpio_leds[] __initdata = {
 277         { LED0_GPIO13, GPIOF_OUT_INIT_LOW, "LED0" }, /* LED0 - AA10 */
 278         { LED1_GPIO14, GPIOF_OUT_INIT_LOW, "LED1" }, /* LED1 - AA6  */
 279         { LED2_GPIO15, GPIOF_OUT_INIT_LOW, "LED2" }, /* LED2 - AA4  */
 280 };
 281
 282 static void __init apollon_led_init(void)
 283 {
 284         omap_mux_init_signal("vlynq_clk.gpio_13", 0);
 285         omap_mux_init_signal("vlynq_rx1.gpio_14", 0);
 286         omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
 287
 288         gpio_request_array(apollon_gpio_leds, ARRAY_SIZE(apollon_gpio_leds));
 289 }
 290
 291 #ifdef CONFIG_OMAP_MUX
 292 static struct omap_board_mux board_mux[] __initdata = {
 293         { .reg_offset = OMAP_MUX_TERMINATOR },
 294 };
 295 #endif
 296
 297 static void __init omap_apollon_init(void)
 298 {
 299         u32 v;
 300
 301         omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAC);
 302
 303         apollon_init_smc91x();
 304         apollon_led_init();
 305         apollon_flash_init();
 306
 307         /* REVISIT: where's the correct place */
 308         omap_mux_init_signal("sys_nirq", OMAP_PULL_ENA | OMAP_PULL_UP);
 309
 310         /* LCD PWR_EN */
 311         omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
 312
 313         /* Use Internal loop-back in MMC/SDIO Module Input Clock selection */
 314         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
 315         v |= (1 << 24);
 316         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
 317
 318         /*
 319          * Make sure the serial ports are muxed on at this point.
 320          * You have to mux them off in device drivers later on
 321          * if not needed.
 322          */
 323         apollon_smc91x_resources[1].start = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
 324         apollon_smc91x_resources[1].end = gpio_to_irq(APOLLON_ETHR_GPIO_IRQ);
 325         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 326         omap_serial_init();
 327         omap_sdrc_init(NULL, NULL);
 328         omap_display_init(&apollon_dss_data);
 329 }
 330
 331 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 332         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 333         .atag_offset    = 0x100,
 334         .reserve        = omap_reserve,
 335         .map_io         = omap242x_map_io,
 336         .init_early     = omap2420_init_early,
 337         .init_irq       = omap2_init_irq,
 338         .handle_irq     = omap2_intc_handle_irq,
 339         .init_machine   = omap_apollon_init,
 340         .init_late      = omap2420_init_late,
 341         .timer          = &omap2_timer,
 342         .restart        = omap_prcm_restart,
 343 MACHINE_END