arch/arm/mach-davinci/board-tnetv107x-evm.c

   1 /*
   2  * Texas Instruments TNETV107X EVM Board Support
   3  *
   4  * Copyright (C) 2010 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/console.h>
  18 #include <linux/dma-mapping.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/gpio.h>
  21 #include <linux/delay.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/ratelimit.h>
  24 #include <linux/mtd/mtd.h>
  25 #include <linux/mtd/partitions.h>
  26 #include <linux/input.h>
  27 #include <linux/input/matrix_keypad.h>
  28 #include <linux/spi/spi.h>
  29 #include <linux/platform_data/edma.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach-types.h>
  33
  34 #include <mach/irqs.h>
  35 #include <mach/mux.h>
  36 #include <mach/cp_intc.h>
  37 #include <mach/tnetv107x.h>
  38
  39 #define EVM_MMC_WP_GPIO         21
  40 #define EVM_MMC_CD_GPIO         24
  41 #define EVM_SPI_CS_GPIO         54
  42
  43 static int initialize_gpio(int gpio, char *desc)
  44 {
  45         int ret;
  46
  47         ret = gpio_request(gpio, desc);
  48         if (ret < 0) {
  49                 pr_err_ratelimited("cannot open %s gpio\n", desc);
  50                 return -ENOSYS;
  51         }
  52         gpio_direction_input(gpio);
  53         return gpio;
  54 }
  55
  56 static int mmc_get_cd(int index)
  57 {
  58         static int gpio;
  59
  60         if (!gpio)
  61                 gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect");
  62
  63         if (gpio < 0)
  64                 return gpio;
  65
  66         return gpio_get_value(gpio) ? 0 : 1;
  67 }
  68
  69 static int mmc_get_ro(int index)
  70 {
  71         static int gpio;
  72
  73         if (!gpio)
  74                 gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect");
  75
  76         if (gpio < 0)
  77                 return gpio;
  78
  79         return gpio_get_value(gpio) ? 1 : 0;
  80 }
  81
  82 static struct davinci_mmc_config mmc_config = {
  83         .get_cd         = mmc_get_cd,
  84         .get_ro         = mmc_get_ro,
  85         .wires          = 4,
  86         .max_freq       = 50000000,
  87         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
  88 };
  89
  90 static const short sdio1_pins[] __initconst = {
  91         TNETV107X_SDIO1_CLK_1,          TNETV107X_SDIO1_CMD_1,
  92         TNETV107X_SDIO1_DATA0_1,        TNETV107X_SDIO1_DATA1_1,
  93         TNETV107X_SDIO1_DATA2_1,        TNETV107X_SDIO1_DATA3_1,
  94         TNETV107X_GPIO21,               TNETV107X_GPIO24,
  95         -1
  96 };
  97
  98 static const short uart1_pins[] __initconst = {
  99         TNETV107X_UART1_RD,             TNETV107X_UART1_TD,
 100         -1
 101 };
 102
 103 static const short ssp_pins[] __initconst = {
 104         TNETV107X_SSP0_0, TNETV107X_SSP0_1, TNETV107X_SSP0_2,
 105         TNETV107X_SSP1_0, TNETV107X_SSP1_1, TNETV107X_SSP1_2,
 106         TNETV107X_SSP1_3, -1
 107 };
 108
 109 static struct mtd_partition nand_partitions[] = {
 110         /* bootloader (U-Boot, etc) in first 12 sectors */
 111         {
 112                 .name           = "bootloader",
 113                 .offset         = 0,
 114                 .size           = (12*SZ_128K),
 115                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 116         },
 117         /* bootloader params in the next sector */
 118         {
 119                 .name           = "params",
 120                 .offset         = MTDPART_OFS_NXTBLK,
 121                 .size           = SZ_128K,
 122                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 123         },
 124         /* kernel */
 125         {
 126                 .name           = "kernel",
 127                 .offset         = MTDPART_OFS_NXTBLK,
 128                 .size           = SZ_4M,
 129                 .mask_flags     = 0,
 130         },
 131         /* file system */
 132         {
 133                 .name           = "filesystem",
 134                 .offset         = MTDPART_OFS_NXTBLK,
 135                 .size           = MTDPART_SIZ_FULL,
 136                 .mask_flags     = 0,
 137         }
 138 };
 139
 140 static struct davinci_nand_pdata nand_config = {
 141         .mask_cle       = 0x4000,
 142         .mask_ale       = 0x2000,
 143         .parts          = nand_partitions,
 144         .nr_parts       = ARRAY_SIZE(nand_partitions),
 145         .ecc_mode       = NAND_ECC_HW,
 146         .bbt_options    = NAND_BBT_USE_FLASH,
 147         .ecc_bits       = 1,
 148 };
 149
 150 static struct davinci_uart_config serial_config __initconst = {
 151         .enabled_uarts  = BIT(1),
 152 };
 153
 154 static const uint32_t keymap[] = {
 155         KEY(0, 0, KEY_NUMERIC_1),
 156         KEY(0, 1, KEY_NUMERIC_2),
 157         KEY(0, 2, KEY_NUMERIC_3),
 158         KEY(0, 3, KEY_FN_F1),
 159         KEY(0, 4, KEY_MENU),
 160
 161         KEY(1, 0, KEY_NUMERIC_4),
 162         KEY(1, 1, KEY_NUMERIC_5),
 163         KEY(1, 2, KEY_NUMERIC_6),
 164         KEY(1, 3, KEY_UP),
 165         KEY(1, 4, KEY_FN_F2),
 166
 167         KEY(2, 0, KEY_NUMERIC_7),
 168         KEY(2, 1, KEY_NUMERIC_8),
 169         KEY(2, 2, KEY_NUMERIC_9),
 170         KEY(2, 3, KEY_LEFT),
 171         KEY(2, 4, KEY_ENTER),
 172
 173         KEY(3, 0, KEY_NUMERIC_STAR),
 174         KEY(3, 1, KEY_NUMERIC_0),
 175         KEY(3, 2, KEY_NUMERIC_POUND),
 176         KEY(3, 3, KEY_DOWN),
 177         KEY(3, 4, KEY_RIGHT),
 178
 179         KEY(4, 0, KEY_FN_F3),
 180         KEY(4, 1, KEY_FN_F4),
 181         KEY(4, 2, KEY_MUTE),
 182         KEY(4, 3, KEY_HOME),
 183         KEY(4, 4, KEY_BACK),
 184
 185         KEY(5, 0, KEY_VOLUMEDOWN),
 186         KEY(5, 1, KEY_VOLUMEUP),
 187         KEY(5, 2, KEY_F1),
 188         KEY(5, 3, KEY_F2),
 189         KEY(5, 4, KEY_F3),
 190 };
 191
 192 static const struct matrix_keymap_data keymap_data = {
 193         .keymap         = keymap,
 194         .keymap_size    = ARRAY_SIZE(keymap),
 195 };
 196
 197 static struct matrix_keypad_platform_data keypad_config = {
 198         .keymap_data    = &keymap_data,
 199         .num_row_gpios  = 6,
 200         .num_col_gpios  = 5,
 201         .debounce_ms    = 0, /* minimum */
 202         .active_low     = 0, /* pull up realization */
 203         .no_autorepeat  = 0,
 204 };
 205
 206 static void spi_select_device(int cs)
 207 {
 208         static int gpio;
 209
 210         if (!gpio) {
 211                 int ret;
 212                 ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel");
 213                 if (ret < 0) {
 214                         pr_err("cannot open spi chipsel gpio\n");
 215                         gpio = -ENOSYS;
 216                         return;
 217                 } else {
 218                         gpio = EVM_SPI_CS_GPIO;
 219                         gpio_direction_output(gpio, 0);
 220                 }
 221         }
 222
 223         if (gpio < 0)
 224                 return;
 225
 226         return gpio_set_value(gpio, cs ? 1 : 0);
 227 }
 228
 229 static struct ti_ssp_spi_data spi_master_data = {
 230         .num_cs = 2,
 231         .select = spi_select_device,
 232         .iosel  = SSP_PIN_SEL(0, SSP_CLOCK)     | SSP_PIN_SEL(1, SSP_DATA) |
 233                   SSP_PIN_SEL(2, SSP_CHIPSEL)   | SSP_PIN_SEL(3, SSP_IN)   |
 234                   SSP_INPUT_SEL(3),
 235 };
 236
 237 static struct ti_ssp_data ssp_config = {
 238         .out_clock      = 250 * 1000,
 239         .dev_data       = {
 240                 [1] = {
 241                         .dev_name = "ti-ssp-spi",
 242                         .pdata = &spi_master_data,
 243                         .pdata_size = sizeof(spi_master_data),
 244                 },
 245         },
 246 };
 247
 248 static struct tnetv107x_device_info evm_device_info __initconst = {
 249         .serial_config          = &serial_config,
 250         .mmc_config[1]          = &mmc_config,  /* controller 1 */
 251         .nand_config[0]         = &nand_config, /* chip select 0 */
 252         .keypad_config          = &keypad_config,
 253         .ssp_config             = &ssp_config,
 254 };
 255
 256 static struct spi_board_info spi_info[] __initconst = {
 257 };
 258
 259 static __init void tnetv107x_evm_board_init(void)
 260 {
 261         davinci_cfg_reg_list(sdio1_pins);
 262         davinci_cfg_reg_list(uart1_pins);
 263         davinci_cfg_reg_list(ssp_pins);
 264
 265         tnetv107x_devices_init(&evm_device_info);
 266
 267         spi_register_board_info(spi_info, ARRAY_SIZE(spi_info));
 268 }
 269
 270 #ifdef CONFIG_SERIAL_8250_CONSOLE
 271 static int __init tnetv107x_evm_console_init(void)
 272 {
 273         return add_preferred_console("ttyS", 0, "115200");
 274 }
 275 console_initcall(tnetv107x_evm_console_init);
 276 #endif
 277
 278 MACHINE_START(TNETV107X, "TNETV107X EVM")
 279         .atag_offset    = 0x100,
 280         .map_io         = tnetv107x_init,
 281         .init_irq       = cp_intc_init,
 282         .init_time      = davinci_timer_init,
 283         .init_machine   = tnetv107x_evm_board_init,
 284         .init_late      = davinci_init_late,
 285         .dma_zone_size  = SZ_128M,
 286         .restart        = tnetv107x_restart,
 287 MACHINE_END