arch/arm/mach-omap2/board-3430sdp.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-3430sdp.c
   3  *
   4  * Copyright (C) 2007 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/mtd/mtd.h>
  19 #include <linux/mtd/partitions.h>
  20 #include <linux/delay.h>
  21 #include <linux/input.h>
  22 #include <linux/workqueue.h>
  23 #include <linux/err.h>
  24 #include <linux/clk.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/ads7846.h>
  27
  28 #include <asm/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/flash.h>
  33
  34 #include <asm/arch/twl4030.h>
  35 #include <asm/arch/mcspi.h>
  36 #include <asm/arch/gpio.h>
  37 #include <asm/arch/mux.h>
  38 #include <asm/arch/board.h>
  39 #include <asm/arch/common.h>
  40 #include <asm/arch/keypad.h>
  41 #include <asm/arch/dma.h>
  42 #include <asm/arch/gpmc.h>
  43
  44 #include <asm/io.h>
  45 #include <asm/delay.h>
  46
  47 #define SDP3430_FLASH_CS        0
  48 #define SDP3430_SMC91X_CS       3
  49
  50 #define ENABLE_VAUX3_DEDICATED  0x03
  51 #define ENABLE_VAUX3_DEV_GRP    0x20
  52
  53 static struct mtd_partition sdp3430_partitions[] = {
  54         /* bootloader (U-Boot, etc) in first sector */
  55         {
  56                   .name         = "bootloader",
  57                   .offset               = 0,
  58                   .size         = SZ_256K,
  59                   .mask_flags   = MTD_WRITEABLE, /* force read-only */
  60         },
  61         /* bootloader params in the next sector */
  62         {
  63                   .name         = "params",
  64                   .offset               = MTDPART_OFS_APPEND,
  65                   .size         = SZ_128K,
  66                   .mask_flags   = 0,
  67         },
  68         /* kernel */
  69         {
  70                   .name         = "kernel",
  71                   .offset               = MTDPART_OFS_APPEND,
  72                   .size         = SZ_2M,
  73                   .mask_flags   = 0
  74         },
  75         /* file system */
  76         {
  77                   .name         = "filesystem",
  78                   .offset               = MTDPART_OFS_APPEND,
  79                   .size         = MTDPART_SIZ_FULL,
  80                   .mask_flags   = 0
  81         }
  82 };
  83
  84 static struct flash_platform_data sdp3430_flash_data = {
  85         .map_name       = "cfi_probe",
  86         .width          = 2,
  87         .parts          = sdp3430_partitions,
  88         .nr_parts       = ARRAY_SIZE(sdp3430_partitions),
  89 };
  90
  91 static struct resource sdp3430_flash_resource = {
  92         .start          = FLASH_BASE,
  93         .end            = FLASH_BASE + SZ_64M - 1,
  94         .flags          = IORESOURCE_MEM,
  95 };
  96
  97 static struct platform_device sdp3430_flash_device = {
  98         .name           = "omapflash",
  99         .id             = 0,
 100         .dev            = {
 101                 .platform_data  = &sdp3430_flash_data,
 102         },
 103         .num_resources  = 1,
 104         .resource       = &sdp3430_flash_resource,
 105 };
 106
 107 static struct resource sdp3430_smc91x_resources[] = {
 108         [0] = {
 109                 .start  = OMAP34XX_ETHR_START,
 110                 .end    = OMAP34XX_ETHR_START + SZ_4K,
 111                 .flags          = IORESOURCE_MEM,
 112         },
 113         [1] = {
 114                 .start          = OMAP_GPIO_IRQ(OMAP34XX_ETHR_GPIO_IRQ),
 115                 .end    = 0,
 116                 .flags          = IORESOURCE_IRQ,
 117         },
 118 };
 119
 120 static struct platform_device sdp3430_smc91x_device = {
 121         .name           = "smc91x",
 122         .id             = -1,
 123         .num_resources  = ARRAY_SIZE(sdp3430_smc91x_resources),
 124         .resource       = sdp3430_smc91x_resources,
 125 };
 126
 127 static int sdp3430_keymap[] = {
 128         KEY(0, 0, KEY_LEFT),
 129         KEY(0, 1, KEY_RIGHT),
 130         KEY(0, 2, KEY_A),
 131         KEY(0, 3, KEY_B),
 132         KEY(0, 4, KEY_C),
 133         KEY(1, 0, KEY_DOWN),
 134         KEY(1, 1, KEY_UP),
 135         KEY(1, 2, KEY_E),
 136         KEY(1, 3, KEY_F),
 137         KEY(1, 4, KEY_G),
 138         KEY(2, 0, KEY_ENTER),
 139         KEY(2, 1, KEY_I),
 140         KEY(2, 2, KEY_J),
 141         KEY(2, 3, KEY_K),
 142         KEY(2, 4, KEY_3),
 143         KEY(3, 0, KEY_M),
 144         KEY(3, 1, KEY_N),
 145         KEY(3, 2, KEY_O),
 146         KEY(3, 3, KEY_P),
 147         KEY(3, 4, KEY_Q),
 148         KEY(4, 0, KEY_R),
 149         KEY(4, 1, KEY_4),
 150         KEY(4, 2, KEY_T),
 151         KEY(4, 3, KEY_U),
 152         KEY(4, 4, KEY_D),
 153         KEY(5, 0, KEY_V),
 154         KEY(5, 1, KEY_W),
 155         KEY(5, 2, KEY_L),
 156         KEY(5, 3, KEY_S),
 157         KEY(5, 4, KEY_H),
 158         0
 159 };
 160
 161 static struct omap_kp_platform_data sdp3430_kp_data = {
 162         .rows           = 5,
 163         .cols           = 6,
 164         .keymap         = sdp3430_keymap,
 165         .keymapsize     = ARRAY_SIZE(sdp3430_keymap),
 166         .rep            = 1,
 167 };
 168
 169 static struct platform_device sdp3430_kp_device = {
 170         .name           = "omap_twl4030keypad",
 171         .id             = -1,
 172         .dev            = {
 173                 .platform_data  = &sdp3430_kp_data,
 174         },
 175 };
 176
 177 /**
 178  * @brief ads7846_dev_init : Requests & sets GPIO line for pen-irq
 179  *
 180  * @return - void. If request gpio fails then Flag KERN_ERR.
 181  */
 182 static void ads7846_dev_init(void)
 183 {
 184         if (omap_request_gpio(TS_GPIO) < 0) {
 185                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 186                 return;
 187         }
 188
 189         omap_set_gpio_direction(TS_GPIO, 1);
 190
 191         omap_set_gpio_debounce(TS_GPIO, 1);
 192         omap_set_gpio_debounce_time(TS_GPIO, 0xa);
 193 }
 194
 195 static int ads7846_get_pendown_state(void)
 196 {
 197         return !omap_get_gpio_datain(TS_GPIO);
 198 }
 199
 200 /*
 201  * This enable(1)/disable(0) the voltage for TS: uses twl4030 calls
 202  */
 203 static int ads7846_vaux_control(int vaux_cntrl)
 204 {
 205         int ret = 0;
 206
 207 #ifdef CONFIG_TWL4030_CORE
 208         /* check for return value of ldo_use: if success it returns 0 */
 209         if (vaux_cntrl == VAUX_ENABLE) {
 210                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 211                         ENABLE_VAUX3_DEDICATED, TWL4030_VAUX3_DEDICATED))
 212                         return -EIO;
 213                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 214                         ENABLE_VAUX3_DEV_GRP, TWL4030_VAUX3_DEV_GRP))
 215                         return -EIO;
 216         } else if (vaux_cntrl == VAUX_DISABLE) {
 217                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 218                         0x00, TWL4030_VAUX3_DEDICATED))
 219                         return -EIO;
 220                 if (ret != twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
 221                         0x00, TWL4030_VAUX3_DEV_GRP))
 222                         return -EIO;
 223         }
 224 #else
 225         ret = -EIO;
 226 #endif
 227         return ret;
 228 }
 229
 230 static struct ads7846_platform_data tsc2046_config __initdata = {
 231         .get_pendown_state      = ads7846_get_pendown_state,
 232         .keep_vref_on           = 1,
 233         .vaux_control           = ads7846_vaux_control,
 234 };
 235
 236
 237 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 238         .turbo_mode     = 0,
 239         .single_channel = 1,  /* 0: slave, 1: master */
 240 };
 241
 242 static struct spi_board_info sdp3430_spi_board_info[] __initdata = {
 243         [0] = {
 244                 /*
 245                  * TSC2046 operates at a max freqency of 2MHz, so
 246                  * operate slightly below at 1.5MHz
 247                  */
 248                 .modalias               = "ads7846",
 249                 .bus_num                = 1,
 250                 .chip_select            = 0,
 251                 .max_speed_hz           = 1500000,
 252                 .controller_data        = &tsc2046_mcspi_config,
 253                 .irq                    = OMAP_GPIO_IRQ(TS_GPIO),
 254                 .platform_data          = &tsc2046_config,
 255         },
 256 };
 257 static struct platform_device *sdp3430_devices[] __initdata = {
 258         &sdp3430_smc91x_device,
 259         &sdp3430_flash_device,
 260         &sdp3430_kp_device,
 261 };
 262
 263 static inline void __init sdp3430_init_smc91x(void)
 264 {
 265         int eth_cs;
 266         unsigned long cs_mem_base;
 267
 268         eth_cs  = SDP3430_SMC91X_CS;
 269
 270         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 271                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 272                 return;
 273         }
 274
 275         sdp3430_smc91x_resources[0].start = cs_mem_base + 0x0;
 276         sdp3430_smc91x_resources[0].end   = cs_mem_base + 0xf;
 277         udelay(100);
 278
 279         if (omap_request_gpio(OMAP34XX_ETHR_GPIO_IRQ) < 0) {
 280                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 281                         OMAP34XX_ETHR_GPIO_IRQ);
 282                 return;
 283         }
 284         omap_set_gpio_direction(OMAP34XX_ETHR_GPIO_IRQ, 1);
 285 }
 286
 287 static void __init omap_3430sdp_init_irq(void)
 288 {
 289         omap2_init_common_hw();
 290         omap_init_irq();
 291         omap_gpio_init();
 292         sdp3430_init_smc91x();
 293 }
 294
 295 static struct omap_uart_config sdp3430_uart_config __initdata = {
 296         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 297 };
 298
 299 static struct omap_board_config_kernel sdp3430_config[] = {
 300         { OMAP_TAG_UART,        &sdp3430_uart_config },
 301 };
 302 static int __init omap3430_i2c_init(void)
 303 {
 304         omap_register_i2c_bus(1, 2600, NULL, 0);
 305         omap_register_i2c_bus(2, 400, NULL, 0);
 306         omap_register_i2c_bus(3, 400, NULL, 0);
 307         return 0;
 308 }
 309
 310 static void __init omap_3430sdp_init(void)
 311 {
 312         platform_add_devices(sdp3430_devices, ARRAY_SIZE(sdp3430_devices));
 313         omap_board_config = sdp3430_config;
 314         omap_board_config_size = ARRAY_SIZE(sdp3430_config);
 315         spi_register_board_info(sdp3430_spi_board_info,
 316                                 ARRAY_SIZE(sdp3430_spi_board_info));
 317         ads7846_dev_init();
 318         omap_serial_init();
 319 }
 320
 321 static void __init omap_3430sdp_map_io(void)
 322 {
 323         omap2_set_globals_343x();
 324         omap2_map_common_io();
 325 }
 326 arch_initcall(omap3430_i2c_init);
 327
 328 MACHINE_START(OMAP_3430SDP, "OMAP3430 3430SDP board")
 329         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 330         .phys_io        = 0x48000000,
 331         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 332         .boot_params    = 0x80000100,
 333         .map_io         = omap_3430sdp_map_io,
 334         .init_irq       = omap_3430sdp_init_irq,
 335         .init_machine   = omap_3430sdp_init,
 336         .timer          = &omap_timer,
 337 MACHINE_END