arch/arm/mach-davinci/board-da850-evm.c

   1 /*
   2  * TI DA850/OMAP-L138 EVM board
   3  *
   4  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
   5  *
   6  * Derived from: arch/arm/mach-davinci/board-da830-evm.c
   7  * Original Copyrights follow:
   8  *
   9  * 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
  10  * the terms of the GNU General Public License version 2. This program
  11  * is licensed "as is" without any warranty of any kind, whether express
  12  * or implied.
  13  */
  14 #include <linux/kernel.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/console.h>
  18 #include <linux/i2c.h>
  19 #include <linux/i2c/at24.h>
  20 #include <linux/gpio.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/nand.h>
  24 #include <linux/mtd/partitions.h>
  25
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28
  29 #include <mach/common.h>
  30 #include <mach/irqs.h>
  31 #include <mach/cp_intc.h>
  32 #include <mach/da8xx.h>
  33 #include <mach/nand.h>
  34
  35 #define DA850_EVM_PHY_MASK              0x1
  36 #define DA850_EVM_MDIO_FREQUENCY        2200000 /* PHY bus frequency */
  37
  38 #define DA850_LCD_BL_PIN                GPIO_TO_PIN(2, 15)
  39 #define DA850_LCD_PWR_PIN               GPIO_TO_PIN(8, 10)
  40
  41 #define DA850_MMCSD_CD_PIN              GPIO_TO_PIN(4, 0)
  42 #define DA850_MMCSD_WP_PIN              GPIO_TO_PIN(4, 1)
  43
  44 /* DA850/OMAP-L138 EVM includes a 512 MByte large-page NAND flash
  45  * (128K blocks). It may be used instead of the (default) SPI flash
  46  * to boot, using TI's tools to install the secondary boot loader
  47  * (UBL) and U-Boot.
  48  */
  49 struct mtd_partition da850_evm_nandflash_partition[] = {
  50         {
  51                 .name           = "u-boot env",
  52                 .offset         = 0,
  53                 .size           = SZ_128K,
  54                 .mask_flags     = MTD_WRITEABLE,
  55          },
  56         {
  57                 .name           = "UBL",
  58                 .offset         = MTDPART_OFS_APPEND,
  59                 .size           = SZ_128K,
  60                 .mask_flags     = MTD_WRITEABLE,
  61         },
  62         {
  63                 .name           = "u-boot",
  64                 .offset         = MTDPART_OFS_APPEND,
  65                 .size           = 4 * SZ_128K,
  66                 .mask_flags     = MTD_WRITEABLE,
  67         },
  68         {
  69                 .name           = "kernel",
  70                 .offset         = 0x200000,
  71                 .size           = SZ_2M,
  72                 .mask_flags     = 0,
  73         },
  74         {
  75                 .name           = "filesystem",
  76                 .offset         = MTDPART_OFS_APPEND,
  77                 .size           = MTDPART_SIZ_FULL,
  78                 .mask_flags     = 0,
  79         },
  80 };
  81
  82 static struct davinci_nand_pdata da850_evm_nandflash_data = {
  83         .parts          = da850_evm_nandflash_partition,
  84         .nr_parts       = ARRAY_SIZE(da850_evm_nandflash_partition),
  85         .ecc_mode       = NAND_ECC_HW,
  86         .options        = NAND_USE_FLASH_BBT,
  87 };
  88
  89 static struct resource da850_evm_nandflash_resource[] = {
  90         {
  91                 .start  = DA8XX_AEMIF_CS3_BASE,
  92                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
  93                 .flags  = IORESOURCE_MEM,
  94         },
  95         {
  96                 .start  = DA8XX_AEMIF_CTL_BASE,
  97                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
  98                 .flags  = IORESOURCE_MEM,
  99         },
 100 };
 101
 102 static struct platform_device da850_evm_nandflash_device = {
 103         .name           = "davinci_nand",
 104         .id             = 1,
 105         .dev            = {
 106                 .platform_data  = &da850_evm_nandflash_data,
 107         },
 108         .num_resources  = ARRAY_SIZE(da850_evm_nandflash_resource),
 109         .resource       = da850_evm_nandflash_resource,
 110 };
 111
 112 static struct davinci_i2c_platform_data da850_evm_i2c_0_pdata = {
 113         .bus_freq       = 100,  /* kHz */
 114         .bus_delay      = 0,    /* usec */
 115 };
 116
 117 static struct davinci_uart_config da850_evm_uart_config __initdata = {
 118         .enabled_uarts = 0x7,
 119 };
 120
 121 static struct platform_device *da850_evm_devices[] __initdata = {
 122         &da850_evm_nandflash_device,
 123 };
 124
 125 /* davinci da850 evm audio machine driver */
 126 static u8 da850_iis_serializer_direction[] = {
 127         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 128         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 129         INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,  TX_MODE,
 130         RX_MODE,        INACTIVE_MODE,  INACTIVE_MODE,  INACTIVE_MODE,
 131 };
 132
 133 static struct snd_platform_data da850_evm_snd_data = {
 134         .tx_dma_offset  = 0x2000,
 135         .rx_dma_offset  = 0x2000,
 136         .op_mode        = DAVINCI_MCASP_IIS_MODE,
 137         .num_serializer = ARRAY_SIZE(da850_iis_serializer_direction),
 138         .tdm_slots      = 2,
 139         .serial_dir     = da850_iis_serializer_direction,
 140         .eventq_no      = EVENTQ_1,
 141         .version        = MCASP_VERSION_2,
 142         .txnumevt       = 1,
 143         .rxnumevt       = 1,
 144 };
 145
 146 static int da850_evm_mmc_get_ro(int index)
 147 {
 148         return gpio_get_value(DA850_MMCSD_WP_PIN);
 149 }
 150
 151 static int da850_evm_mmc_get_cd(int index)
 152 {
 153         return !gpio_get_value(DA850_MMCSD_CD_PIN);
 154 }
 155
 156 static struct davinci_mmc_config da850_mmc_config = {
 157         .get_ro         = da850_evm_mmc_get_ro,
 158         .get_cd         = da850_evm_mmc_get_cd,
 159         .wires          = 4,
 160         .version        = MMC_CTLR_VERSION_2,
 161 };
 162
 163 static int da850_lcd_hw_init(void)
 164 {
 165         int status;
 166
 167         status = gpio_request(DA850_LCD_BL_PIN, "lcd bl\n");
 168         if (status < 0)
 169                 return status;
 170
 171         status = gpio_request(DA850_LCD_PWR_PIN, "lcd pwr\n");
 172         if (status < 0) {
 173                 gpio_free(DA850_LCD_BL_PIN);
 174                 return status;
 175         }
 176
 177         gpio_direction_output(DA850_LCD_BL_PIN, 0);
 178         gpio_direction_output(DA850_LCD_PWR_PIN, 0);
 179
 180         /* disable lcd backlight */
 181         gpio_set_value(DA850_LCD_BL_PIN, 0);
 182
 183         /* disable lcd power */
 184         gpio_set_value(DA850_LCD_PWR_PIN, 0);
 185
 186         /* enable lcd power */
 187         gpio_set_value(DA850_LCD_PWR_PIN, 1);
 188
 189         /* enable lcd backlight */
 190         gpio_set_value(DA850_LCD_BL_PIN, 1);
 191
 192         return 0;
 193 }
 194
 195 static __init void da850_evm_init(void)
 196 {
 197         struct davinci_soc_info *soc_info = &davinci_soc_info;
 198         int ret;
 199
 200         ret = da8xx_pinmux_setup(da850_nand_pins);
 201         if (ret)
 202                 pr_warning("da850_evm_init: nand mux setup failed: %d\n",
 203                                 ret);
 204
 205         platform_add_devices(da850_evm_devices,
 206                                 ARRAY_SIZE(da850_evm_devices));
 207
 208         ret = da8xx_register_edma();
 209         if (ret)
 210                 pr_warning("da850_evm_init: edma registration failed: %d\n",
 211                                 ret);
 212
 213         ret = da8xx_pinmux_setup(da850_i2c0_pins);
 214         if (ret)
 215                 pr_warning("da850_evm_init: i2c0 mux setup failed: %d\n",
 216                                 ret);
 217
 218         ret = da8xx_register_i2c(0, &da850_evm_i2c_0_pdata);
 219         if (ret)
 220                 pr_warning("da850_evm_init: i2c0 registration failed: %d\n",
 221                                 ret);
 222
 223         soc_info->emac_pdata->phy_mask = DA850_EVM_PHY_MASK;
 224         soc_info->emac_pdata->mdio_max_freq = DA850_EVM_MDIO_FREQUENCY;
 225         soc_info->emac_pdata->rmii_en = 0;
 226
 227         ret = da8xx_pinmux_setup(da850_cpgmac_pins);
 228         if (ret)
 229                 pr_warning("da850_evm_init: cpgmac mux setup failed: %d\n",
 230                                 ret);
 231
 232         ret = da8xx_register_emac();
 233         if (ret)
 234                 pr_warning("da850_evm_init: emac registration failed: %d\n",
 235                                 ret);
 236
 237         ret = da8xx_register_watchdog();
 238         if (ret)
 239                 pr_warning("da830_evm_init: watchdog registration failed: %d\n",
 240                                 ret);
 241
 242         ret = da8xx_pinmux_setup(da850_mmcsd0_pins);
 243         if (ret)
 244                 pr_warning("da850_evm_init: mmcsd0 mux setup failed: %d\n",
 245                                 ret);
 246
 247         ret = gpio_request(DA850_MMCSD_CD_PIN, "MMC CD\n");
 248         if (ret)
 249                 pr_warning("da850_evm_init: can not open GPIO %d\n",
 250                                 DA850_MMCSD_CD_PIN);
 251         gpio_direction_input(DA850_MMCSD_CD_PIN);
 252
 253         ret = gpio_request(DA850_MMCSD_WP_PIN, "MMC WP\n");
 254         if (ret)
 255                 pr_warning("da850_evm_init: can not open GPIO %d\n",
 256                                 DA850_MMCSD_WP_PIN);
 257         gpio_direction_input(DA850_MMCSD_WP_PIN);
 258
 259         ret = da8xx_register_mmcsd0(&da850_mmc_config);
 260         if (ret)
 261                 pr_warning("da850_evm_init: mmcsd0 registration failed: %d\n",
 262                                 ret);
 263
 264         davinci_serial_init(&da850_evm_uart_config);
 265
 266         /*
 267          * shut down uart 0 and 1; they are not used on the board and
 268          * accessing them causes endless "too much work in irq53" messages
 269          * with arago fs
 270          */
 271         __raw_writel(0, IO_ADDRESS(DA8XX_UART1_BASE) + 0x30);
 272         __raw_writel(0, IO_ADDRESS(DA8XX_UART0_BASE) + 0x30);
 273
 274         ret = da8xx_pinmux_setup(da850_mcasp_pins);
 275         if (ret)
 276                 pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
 277                                 ret);
 278
 279         da8xx_init_mcasp(0, &da850_evm_snd_data);
 280
 281         ret = da8xx_pinmux_setup(da850_lcdcntl_pins);
 282         if (ret)
 283                 pr_warning("da850_evm_init: lcdcntl mux setup failed: %d\n",
 284                                 ret);
 285
 286         ret = da850_lcd_hw_init();
 287         if (ret)
 288                 pr_warning("da850_evm_init: lcd initialization failed: %d\n",
 289                                 ret);
 290
 291         ret = da8xx_register_lcdc();
 292         if (ret)
 293                 pr_warning("da850_evm_init: lcdc registration failed: %d\n",
 294                                 ret);
 295 }
 296
 297 #ifdef CONFIG_SERIAL_8250_CONSOLE
 298 static int __init da850_evm_console_init(void)
 299 {
 300         return add_preferred_console("ttyS", 2, "115200");
 301 }
 302 console_initcall(da850_evm_console_init);
 303 #endif
 304
 305 static __init void da850_evm_irq_init(void)
 306 {
 307         struct davinci_soc_info *soc_info = &davinci_soc_info;
 308
 309         cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA850_N_CP_INTC_IRQ,
 310                         soc_info->intc_irq_prios);
 311 }
 312
 313 static void __init da850_evm_map_io(void)
 314 {
 315         da850_init();
 316 }
 317
 318 MACHINE_START(DAVINCI_DA850_EVM, "DaVinci DA850/OMAP-L138 EVM")
 319         .phys_io        = IO_PHYS,
 320         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 321         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 322         .map_io         = da850_evm_map_io,
 323         .init_irq       = da850_evm_irq_init,
 324         .timer          = &davinci_timer,
 325         .init_machine   = da850_evm_init,
 326 MACHINE_END