arch/arm/mach-omap2/board-h4.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-h4.c
   3  *
   4  * Copyright (C) 2005 Nokia Corporation
   5  * Author: Paul Mundt <paul.mundt@nokia.com>
   6  *
   7  * Modified from mach-omap/omap1/board-generic.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13 #include <linux/gpio.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/partitions.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/delay.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/i2c.h>
  23 #include <linux/i2c/at24.h>
  24 #include <linux/input.h>
  25 #include <linux/err.h>
  26 #include <linux/clk.h>
  27 #include <linux/io.h>
  28 #include <linux/input/matrix_keypad.h>
  29 #include <linux/mfd/menelaus.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34
  35 #include <linux/omap-dma.h>
  36 #include <plat/debug-devices.h>
  37
  38 #include <video/omapdss.h>
  39 #include <video/omap-panel-generic-dpi.h>
  40
  41 #include "common.h"
  42 #include "mux.h"
  43 #include "control.h"
  44 #include "gpmc.h"
  45
  46 #define H4_FLASH_CS     0
  47 #define H4_SMC91X_CS    1
  48
  49 #define H4_ETHR_GPIO_IRQ                92
  50
  51 #if defined(CONFIG_KEYBOARD_MATRIX) || defined(CONFIG_KEYBOARD_MATRIX_MODULE)
  52 static const uint32_t board_matrix_keys[] = {
  53         KEY(0, 0, KEY_LEFT),
  54         KEY(1, 0, KEY_RIGHT),
  55         KEY(2, 0, KEY_A),
  56         KEY(3, 0, KEY_B),
  57         KEY(4, 0, KEY_C),
  58         KEY(0, 1, KEY_DOWN),
  59         KEY(1, 1, KEY_UP),
  60         KEY(2, 1, KEY_E),
  61         KEY(3, 1, KEY_F),
  62         KEY(4, 1, KEY_G),
  63         KEY(0, 2, KEY_ENTER),
  64         KEY(1, 2, KEY_I),
  65         KEY(2, 2, KEY_J),
  66         KEY(3, 2, KEY_K),
  67         KEY(4, 2, KEY_3),
  68         KEY(0, 3, KEY_M),
  69         KEY(1, 3, KEY_N),
  70         KEY(2, 3, KEY_O),
  71         KEY(3, 3, KEY_P),
  72         KEY(4, 3, KEY_Q),
  73         KEY(0, 4, KEY_R),
  74         KEY(1, 4, KEY_4),
  75         KEY(2, 4, KEY_T),
  76         KEY(3, 4, KEY_U),
  77         KEY(4, 4, KEY_ENTER),
  78         KEY(0, 5, KEY_V),
  79         KEY(1, 5, KEY_W),
  80         KEY(2, 5, KEY_L),
  81         KEY(3, 5, KEY_S),
  82         KEY(4, 5, KEY_ENTER),
  83 };
  84
  85 static const struct matrix_keymap_data board_keymap_data = {
  86         .keymap                 = board_matrix_keys,
  87         .keymap_size            = ARRAY_SIZE(board_matrix_keys),
  88 };
  89
  90 static unsigned int board_keypad_row_gpios[] = {
  91         88, 89, 124, 11, 6, 96
  92 };
  93
  94 static unsigned int board_keypad_col_gpios[] = {
  95         90, 91, 100, 36, 12, 97, 98
  96 };
  97
  98 static struct matrix_keypad_platform_data board_keypad_platform_data = {
  99         .keymap_data    = &board_keymap_data,
 100         .row_gpios      = board_keypad_row_gpios,
 101         .num_row_gpios  = ARRAY_SIZE(board_keypad_row_gpios),
 102         .col_gpios      = board_keypad_col_gpios,
 103         .num_col_gpios  = ARRAY_SIZE(board_keypad_col_gpios),
 104         .active_low     = 1,
 105
 106         .debounce_ms            = 20,
 107         .col_scan_delay_us      = 5,
 108 };
 109
 110 static struct platform_device board_keyboard = {
 111         .name   = "matrix-keypad",
 112         .id     = -1,
 113         .dev    = {
 114                 .platform_data = &board_keypad_platform_data,
 115         },
 116 };
 117 static void __init board_mkp_init(void)
 118 {
 119         omap_mux_init_gpio(88, OMAP_PULL_ENA | OMAP_PULL_UP);
 120         omap_mux_init_gpio(89, OMAP_PULL_ENA | OMAP_PULL_UP);
 121         omap_mux_init_gpio(124, OMAP_PULL_ENA | OMAP_PULL_UP);
 122         omap_mux_init_signal("mcbsp2_dr.gpio_11", OMAP_PULL_ENA | OMAP_PULL_UP);
 123         if (omap_has_menelaus()) {
 124                 omap_mux_init_signal("sdrc_a14.gpio0",
 125                         OMAP_PULL_ENA | OMAP_PULL_UP);
 126                 omap_mux_init_signal("vlynq_rx0.gpio_15", 0);
 127                 omap_mux_init_signal("gpio_98", 0);
 128                 board_keypad_row_gpios[5] = 0;
 129                 board_keypad_col_gpios[2] = 15;
 130                 board_keypad_col_gpios[6] = 18;
 131         } else {
 132                 omap_mux_init_signal("gpio_96", OMAP_PULL_ENA | OMAP_PULL_UP);
 133                 omap_mux_init_signal("gpio_100", 0);
 134                 omap_mux_init_signal("gpio_98", 0);
 135         }
 136         omap_mux_init_signal("gpio_90", 0);
 137         omap_mux_init_signal("gpio_91", 0);
 138         omap_mux_init_signal("gpio_36", 0);
 139         omap_mux_init_signal("mcbsp2_clkx.gpio_12", 0);
 140         omap_mux_init_signal("gpio_97", 0);
 141
 142         platform_device_register(&board_keyboard);
 143 }
 144 #else
 145 static inline void board_mkp_init(void)
 146 {
 147 }
 148 #endif
 149
 150 static struct mtd_partition h4_partitions[] = {
 151         /* bootloader (U-Boot, etc) in first sector */
 152         {
 153               .name             = "bootloader",
 154               .offset           = 0,
 155               .size             = SZ_128K,
 156               .mask_flags       = MTD_WRITEABLE, /* force read-only */
 157         },
 158         /* bootloader params in the next sector */
 159         {
 160               .name             = "params",
 161               .offset           = MTDPART_OFS_APPEND,
 162               .size             = SZ_128K,
 163               .mask_flags       = 0,
 164         },
 165         /* kernel */
 166         {
 167               .name             = "kernel",
 168               .offset           = MTDPART_OFS_APPEND,
 169               .size             = SZ_2M,
 170               .mask_flags       = 0
 171         },
 172         /* file system */
 173         {
 174               .name             = "filesystem",
 175               .offset           = MTDPART_OFS_APPEND,
 176               .size             = MTDPART_SIZ_FULL,
 177               .mask_flags       = 0
 178         }
 179 };
 180
 181 static struct physmap_flash_data h4_flash_data = {
 182         .width          = 2,
 183         .parts          = h4_partitions,
 184         .nr_parts       = ARRAY_SIZE(h4_partitions),
 185 };
 186
 187 static struct resource h4_flash_resource = {
 188         .flags          = IORESOURCE_MEM,
 189 };
 190
 191 static struct platform_device h4_flash_device = {
 192         .name           = "physmap-flash",
 193         .id             = 0,
 194         .dev            = {
 195                 .platform_data  = &h4_flash_data,
 196         },
 197         .num_resources  = 1,
 198         .resource       = &h4_flash_resource,
 199 };
 200
 201 static struct platform_device *h4_devices[] __initdata = {
 202         &h4_flash_device,
 203 };
 204
 205 static struct panel_generic_dpi_data h4_panel_data = {
 206         .name                   = "h4",
 207 };
 208
 209 static struct omap_dss_device h4_lcd_device = {
 210         .name                   = "lcd",
 211         .driver_name            = "generic_dpi_panel",
 212         .type                   = OMAP_DISPLAY_TYPE_DPI,
 213         .phy.dpi.data_lines     = 16,
 214         .data                   = &h4_panel_data,
 215 };
 216
 217 static struct omap_dss_device *h4_dss_devices[] = {
 218         &h4_lcd_device,
 219 };
 220
 221 static struct omap_dss_board_info h4_dss_data = {
 222         .num_devices    = ARRAY_SIZE(h4_dss_devices),
 223         .devices        = h4_dss_devices,
 224         .default_device = &h4_lcd_device,
 225 };
 226
 227 /* 2420 Sysboot setup (2430 is different) */
 228 static u32 get_sysboot_value(void)
 229 {
 230         return (omap_ctrl_readl(OMAP24XX_CONTROL_STATUS) &
 231                 (OMAP2_SYSBOOT_5_MASK | OMAP2_SYSBOOT_4_MASK |
 232                  OMAP2_SYSBOOT_3_MASK | OMAP2_SYSBOOT_2_MASK |
 233                  OMAP2_SYSBOOT_1_MASK | OMAP2_SYSBOOT_0_MASK));
 234 }
 235
 236 /* H4-2420's always used muxed mode, H4-2422's always use non-muxed
 237  *
 238  * Note: OMAP-GIT doesn't correctly do is_cpu_omap2422 and is_cpu_omap2423
 239  *  correctly.  The macro needs to look at production_id not just hawkeye.
 240  */
 241 static u32 is_gpmc_muxed(void)
 242 {
 243         u32 mux;
 244         mux = get_sysboot_value();
 245         if ((mux & 0xF) == 0xd)
 246                 return 1;       /* NAND config (could be either) */
 247         if (mux & 0x2)          /* if mux'ed */
 248                 return 1;
 249         else
 250                 return 0;
 251 }
 252
 253 static inline void __init h4_init_debug(void)
 254 {
 255         int eth_cs;
 256         unsigned long cs_mem_base;
 257         unsigned int muxed, rate;
 258         struct clk *gpmc_fck;
 259
 260         eth_cs  = H4_SMC91X_CS;
 261
 262         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 263         if (IS_ERR(gpmc_fck)) {
 264                 WARN_ON(1);
 265                 return;
 266         }
 267
 268         clk_prepare_enable(gpmc_fck);
 269         rate = clk_get_rate(gpmc_fck);
 270         clk_disable_unprepare(gpmc_fck);
 271         clk_put(gpmc_fck);
 272
 273         if (is_gpmc_muxed())
 274                 muxed = 0x200;
 275         else
 276                 muxed = 0;
 277
 278         /* Make sure CS1 timings are correct */
 279         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1,
 280                           0x00011000 | muxed);
 281
 282         if (rate >= 160000000) {
 283                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 284                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 285                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 286                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 287                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 288         } else if (rate >= 130000000) {
 289                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 290                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 291                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 292                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 293                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 294         } else {/* rate = 100000000 */
 295                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 296                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 297                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 298                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 299                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 300         }
 301
 302         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 303                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 304                 goto out;
 305         }
 306
 307         udelay(100);
 308
 309         omap_mux_init_gpio(92, 0);
 310         if (debug_card_init(cs_mem_base, H4_ETHR_GPIO_IRQ) < 0)
 311                 gpmc_cs_free(eth_cs);
 312
 313 out:
 314         clk_disable_unprepare(gpmc_fck);
 315         clk_put(gpmc_fck);
 316 }
 317
 318 static void __init h4_init_flash(void)
 319 {
 320         unsigned long base;
 321
 322         if (gpmc_cs_request(H4_FLASH_CS, SZ_64M, &base) < 0) {
 323                 printk("Can't request GPMC CS for flash\n");
 324                 return;
 325         }
 326         h4_flash_resource.start = base;
 327         h4_flash_resource.end   = base + SZ_64M - 1;
 328 }
 329
 330 static struct at24_platform_data m24c01 = {
 331         .byte_len       = SZ_1K / 8,
 332         .page_size      = 16,
 333 };
 334
 335 static struct i2c_board_info __initdata h4_i2c_board_info[] = {
 336         {
 337                 I2C_BOARD_INFO("isp1301_omap", 0x2d),
 338         },
 339         {       /* EEPROM on mainboard */
 340                 I2C_BOARD_INFO("24c01", 0x52),
 341                 .platform_data  = &m24c01,
 342         },
 343         {       /* EEPROM on cpu card */
 344                 I2C_BOARD_INFO("24c01", 0x57),
 345                 .platform_data  = &m24c01,
 346         },
 347 };
 348
 349 #ifdef CONFIG_OMAP_MUX
 350 static struct omap_board_mux board_mux[] __initdata = {
 351         { .reg_offset = OMAP_MUX_TERMINATOR },
 352 };
 353 #endif
 354
 355 static void __init omap_h4_init(void)
 356 {
 357         omap2420_mux_init(board_mux, OMAP_PACKAGE_ZAF);
 358
 359         /*
 360          * Make sure the serial ports are muxed on at this point.
 361          * You have to mux them off in device drivers later on
 362          * if not needed.
 363          */
 364
 365         board_mkp_init();
 366         h4_i2c_board_info[0].irq = gpio_to_irq(125);
 367         i2c_register_board_info(1, h4_i2c_board_info,
 368                         ARRAY_SIZE(h4_i2c_board_info));
 369
 370         platform_add_devices(h4_devices, ARRAY_SIZE(h4_devices));
 371         omap_serial_init();
 372         omap_sdrc_init(NULL, NULL);
 373         h4_init_flash();
 374
 375         omap_display_init(&h4_dss_data);
 376 }
 377
 378 MACHINE_START(OMAP_H4, "OMAP2420 H4 board")
 379         /* Maintainer: Paul Mundt <paul.mundt@nokia.com> */
 380         .atag_offset    = 0x100,
 381         .reserve        = omap_reserve,
 382         .map_io         = omap242x_map_io,
 383         .init_early     = omap2420_init_early,
 384         .init_irq       = omap2_init_irq,
 385         .handle_irq     = omap2_intc_handle_irq,
 386         .init_machine   = omap_h4_init,
 387         .init_late      = omap2420_init_late,
 388         .timer          = &omap2_timer,
 389         .restart        = omap2xxx_restart,
 390 MACHINE_END