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mx25_3stack.c

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/*
 * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
 */

/*
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/types.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/nodemask.h>
#include <linux/clk.h>
#include <linux/spi/spi.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/smsc911x.h>
#if defined(CONFIG_MTD) || defined(CONFIG_MTD_MODULE)
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>

#include <asm/mach/flash.h>
#endif

#include <mach/common.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach/keypad.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#include <mach/memory.h>
#include <mach/gpio.h>
#include <mach/mmc.h>

#include "board-mx25_3stack.h"
#include "crm_regs.h"
#include "iomux.h"

/*!
 * @file mach-mx25/mx25_3stack.c
 *
 * @brief This file contains the board specific initialization routines.
 *
 * @ingroup MSL_MX25
 */

unsigned int mx25_3stack_board_io;

/* working point(wp): 0 - 399MHz; 1 - 266MHz; 2 - 133MHz; */
/* 24MHz input clock table */
static struct cpu_wp cpu_wp_mx25[] = {
      {
       .pll_rate = 399000000,
       .cpu_rate = 399000000,
       .cpu_podf = 0x0,
       .cpu_voltage = 1450000},
      {
       .pll_rate = 532000000,
       .cpu_rate = 266000000,
       .cpu_podf = 0x1,
       .cpu_voltage = 1340000},
      {
       .pll_rate = 532000000,
       .cpu_rate = 133000000,
       .cpu_podf = 0x3,
       .cpu_voltage = 1340000},
};
struct cpu_wp *get_cpu_wp(int *wp)
{
      *wp = 3;
      return cpu_wp_mx25;
}

static void mxc_nop_release(struct device *dev)
{
      /* Nothing */
}

#if defined(CONFIG_KEYBOARD_MXC) || defined(CONFIG_KEYBOARD_MXC_MODULE)
static u16 keymapping[16] = {
      KEY_UP, KEY_DOWN, KEY_VOLUMEDOWN, KEY_HOME,
      KEY_RIGHT, KEY_LEFT, KEY_ENTER, KEY_VOLUMEUP,
      KEY_F6, KEY_F8, KEY_F9, KEY_F10,
      KEY_F1, KEY_F2, KEY_F3, KEY_POWER,
};

static struct resource mxc_kpp_resources[] = {
      [0] = {
             .start = MXC_INT_KPP,
             .end = MXC_INT_KPP,
             .flags = IORESOURCE_IRQ,
             }
};

static struct keypad_data keypad_plat_data = {
      .rowmax = 4,
      .colmax = 4,
      .irq = MXC_INT_KPP,
      .learning = 0,
      .delay = 2,
      .matrix = keymapping,
};

/* mxc keypad driver */
static struct platform_device mxc_keypad_device = {
      .name = "mxc_keypad",
      .id = 0,
      .num_resources = ARRAY_SIZE(mxc_kpp_resources),
      .resource = mxc_kpp_resources,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &keypad_plat_data,
            },
};

static void mxc_init_keypad(void)
{
      (void)platform_device_register(&mxc_keypad_device);
}
#else
static inline void mxc_init_keypad(void)
{
}
#endif

/* MTD NAND flash */

#if defined(CONFIG_MTD_NAND_MXC_V2) || defined(CONFIG_MTD_NAND_MXC_V2_MODULE)

static struct mtd_partition mxc_nand_partitions[] = {
      {
       .name = "nand.bootloader",
       .offset = 0,
       .size = 3 * 1024 * 1024},
      {
       .name = "nand.kernel",
       .offset = MTDPART_OFS_APPEND,
       .size = 5 * 1024 * 1024},
      {
       .name = "nand.rootfs",
       .offset = MTDPART_OFS_APPEND,
       .size = 256 * 1024 * 1024},
      {
       .name = "nand.configure",
       .offset = MTDPART_OFS_APPEND,
       .size = 8 * 1024 * 1024},
      {
       .name = "nand.userfs",
       .offset = MTDPART_OFS_APPEND,
       .size = MTDPART_SIZ_FULL},
};

static struct flash_platform_data mxc_nand_data = {
      .parts = mxc_nand_partitions,
      .nr_parts = ARRAY_SIZE(mxc_nand_partitions),
      .width = 1,
};

static struct platform_device mxc_nand_mtd_device = {
      .name = "mxc_nandv2_flash",
      .id = 0,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &mxc_nand_data,
            },
};

static void mxc_init_nand_mtd(void)
{
      if (__raw_readl(MXC_CCM_RCSR) & MXC_CCM_RCSR_NF16B)
            mxc_nand_data.width = 2;

      platform_device_register(&mxc_nand_mtd_device);
}
#else
static inline void mxc_init_nand_mtd(void)
{
}
#endif

#if defined(CONFIG_FB_MXC_SYNC_PANEL) || \
    defined(CONFIG_FB_MXC_SYNC_PANEL_MODULE)
static const char fb_default_mode[] = "CPT-VGA";

/* mxc lcd driver */
static struct platform_device mxc_fb_device = {
      .name = "mxc_sdc_fb",
      .id = 0,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &fb_default_mode,
            .coherent_dma_mask = 0xFFFFFFFF,
            },
};

/*
 * Power on/off CPT VGA panel.
 */
void board_power_lcd(int on)
{
      if (on)
            mx2fb_set_brightness(MXC_DEFAULT_INTENSITY);
      else
            mx2fb_set_brightness(MXC_INTENSITY_OFF);
}
EXPORT_SYMBOL_GPL(board_power_lcd);

static void mxc_init_fb(void)
{
      (void)platform_device_register(&mxc_fb_device);
}
#else
static inline void mxc_init_fb(void)
{
}
#endif

#if defined(CONFIG_BACKLIGHT_MXC)
static struct platform_device mxcbl_devices[] = {
#if defined(CONFIG_BACKLIGHT_MXC_LCDC) || \
    defined(CONFIG_BACKLIGHT_MXC_LCDC_MODULE)
      {
       .name = "mxc_lcdc_bl",
       .id = 0,
       },
#endif
};

static inline void mxc_init_bl(void)
{
      int i;

      for (i = 0; i < ARRAY_SIZE(mxcbl_devices); i++)
            platform_device_register(&mxcbl_devices[i]);
}
#else
static inline void mxc_init_bl(void)
{
}
#endif

/*!
 * Power Key interrupt handler.
 */
00256 static irqreturn_t power_key_int(int irq, void *dev_id)
{
      pr_info("on-off key pressed\n");
      return 0;
}

/*!
 * Power Key initialization.
 */
00265 static int __init mxc_init_power_key(void)
{
      /*Set power key as wakeup resource */
      int irq, ret;

      mxc_request_iomux(MX25_PIN_A25, MUX_CONFIG_ALT5);
      mxc_iomux_set_pad(MX25_PIN_A25, PAD_CTL_DRV_NORMAL);
      gpio_request(IOMUX_TO_GPIO(MX25_PIN_A25), NULL);
      gpio_direction_input(IOMUX_TO_GPIO(MX25_PIN_A25));

      irq = IOMUX_TO_IRQ(MX25_PIN_A25);
      set_irq_type(irq, IRQF_TRIGGER_RISING);
      ret = request_irq(irq, power_key_int, 0, "power_key", 0);
      if (ret)
            pr_info("register on-off key interrupt failed\n");
      else
            enable_irq_wake(irq);

      return ret;
}

late_initcall(mxc_init_power_key);

static struct spi_board_info mxc_spi_board_info[] __initdata = {
      {
       .modalias = "cpld_spi",
       .max_speed_hz = 18000000,
       .bus_num = 1,
       .chip_select = 0,
       .mode = SPI_MODE_2,
       },
      {
       .modalias = "wm8580_spi",
       .max_speed_hz = 8000000,     /* max spi SCK clock speed in HZ */
       .bus_num = 1,
       .chip_select = 1,
       },
};

static struct mxc_camera_platform_data camera_data = {
      .core_regulator = NULL,
      .io_regulator = NULL,
      .analog_regulator = NULL,
      .gpo_regulator = NULL,
      .mclk = 24000000,
};

static struct i2c_board_info mxc_i2c_board_info[] __initdata = {
      {
       .type = "sgtl5000-i2c",
       .addr = 0x0a,
       },
      {
       .type = "ak5702-i2c",
       .addr = 0x13,
       },
      {
       .type = "ov2640",
       .addr = 0x30,
       .platform_data = (void *)&camera_data,
       },
};

#if defined(CONFIG_SND_SOC_IMX_3STACK_SGTL5000) \
    || defined(CONFIG_SND_SOC_IMX_3STACK_SGTL5000_MODULE)
static struct mxc_audio_platform_data sgtl5000_data = {
      .ssi_num = 2,
      .src_port = 1,
      .ext_port = 4,
      .hp_irq = IOMUX_TO_IRQ(MX25_PIN_A10),
      .hp_status = headphone_det_status,
      .sysclk = 8300000,
};

static struct platform_device mxc_sgtl5000_device = {
      .name = "imx-3stack-sgtl5000",
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &sgtl5000_data,
            },
};

static void mxc_init_sgtl5000(void)
{
      struct clk *cko1, *parent;
      unsigned long rate;

      /* cko1 clock */
      mxc_request_iomux(MX25_PIN_CLKO, MUX_CONFIG_FUNC);

      cko1 = clk_get(NULL, "clko_clk");
      if (IS_ERR(cko1))
            return;
      parent = clk_get(NULL, "ipg_clk");
      if (IS_ERR(parent))
            return;
      clk_set_parent(cko1, parent);
      rate = clk_round_rate(cko1, 13000000);
      if (rate < 8000000 || rate > 27000000) {
            pr_err("Error: SGTL5000 mclk freq %ld out of range!\n", rate);
            clk_put(parent);
            clk_put(cko1);
            return;
      }
      clk_set_rate(cko1, rate);
      clk_enable(cko1);
      sgtl5000_data.sysclk = rate;
      sgtl5000_enable_amp();
      platform_device_register(&mxc_sgtl5000_device);
}
#else
static inline void mxc_init_sgtl5000(void)
{
}
#endif

#if defined(CONFIG_SND_SOC_IMX_3STACK_AK5702) \
    || defined(CONFIG_SND_SOC_IMX_3STACK_AK5702_MODULE)
static struct platform_device mxc_ak5702_device = {
      .name = "imx-3stack-ak5702",
      .dev = {
            .release = mxc_nop_release,
            },
};

static void mxc_init_ak5702(void)
{
      platform_device_register(&mxc_ak5702_device);
}
#else
static inline void mxc_init_ak5702(void)
{
}
#endif

#if  defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
static struct resource smsc911x_resources[] = {
      {
       .start = LAN9217_BASE_ADDR,
       .end = LAN9217_BASE_ADDR + 255,
       .flags = IORESOURCE_MEM,
       },
      {
       .start = MXC_BOARD_IRQ_START,
       .flags = IORESOURCE_IRQ,
       }
};

struct smsc911x_platform_config smsc911x_config = {
        .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
        .flags = 0x8000 | SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
};

static struct platform_device smsc_lan9217_device = {
      .name = "smsc911x",
      .id = 0,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &smsc911x_config,
            },
      .num_resources = ARRAY_SIZE(smsc911x_resources),
      .resource = smsc911x_resources,
};

static int __init mxc_init_enet(void)
{
      (void)platform_device_register(&smsc_lan9217_device);
      return 0;
}
#else
static int __init mxc_init_enet(void)
{
      return 0;
}
#endif

late_initcall(mxc_init_enet);

#if defined(CONFIG_FEC) || defined(CONFIG_FEC_MODULE)
static struct resource mxc_fec_resources[] = {
      {
            .start      = FEC_BASE_ADDR,
            .end  = FEC_BASE_ADDR + 0xfff,
            .flags      = IORESOURCE_MEM
      }, {
            .start      = MXC_INT_FEC,
            .end  = MXC_INT_FEC,
            .flags      = IORESOURCE_IRQ
      },
};

struct platform_device mxc_fec_device = {
      .name = "fec",
      .id = 0,
      .num_resources = ARRAY_SIZE(mxc_fec_resources),
      .resource = mxc_fec_resources,
};

static __init int mxc_init_fec(void)
{
      return platform_device_register(&mxc_fec_device);
}
#else
static inline int mxc_init_fec(void)
{
      return 0;
}
#endif

#if defined(CONFIG_IMX_SIM) || defined(CONFIG_IMX_SIM_MODULE)
/* Used to configure the SIM bus */
static struct mxc_sim_platform_data sim1_data = {
      .clk_rate = 5000000,
      .clock_sim = "sim1_clk",
      .power_sim = NULL,
      .init = NULL,
      .exit = NULL,
      .detect = 1,
};

/*!
 * Resource definition for the SIM
 */
static struct resource mxc_sim1_resources[] = {
      [0] = {
             .start = SIM1_BASE_ADDR,
             .end = SIM1_BASE_ADDR + SZ_4K - 1,
             .flags = IORESOURCE_MEM,
             },
      [1] = {
             .start = MXC_INT_SIM1,
             .end = MXC_INT_SIM1,
             .flags = IORESOURCE_IRQ,
             },
      [2] = {
             .start = 0,
             .end = 0,
             .flags = IORESOURCE_IRQ,
             },
};

/*! Device Definition for IMX SIM */
static struct platform_device mxc_sim1_device = {
      .name = "mxc_sim",
      .id = 0,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &sim1_data,
            },
      .num_resources = ARRAY_SIZE(mxc_sim1_resources),
      .resource = mxc_sim1_resources,
};

static inline void mxc_init_sim(void)
{
      (void)platform_device_register(&mxc_sim1_device);
}
#else
static inline void mxc_init_sim(void)
{
}
#endif

#if defined(CONFIG_MMC_IMX_ESDHCI) || defined(CONFIG_MMC_IMX_ESDHCI_MODULE)
static struct mxc_mmc_platform_data mmc1_data = {
      .ocr_mask = MMC_VDD_29_30 | MMC_VDD_32_33,
      .caps = MMC_CAP_4_BIT_DATA,
      .min_clk = 400000,
      .max_clk = 52000000,
      .card_inserted_state = 1,
      .status = sdhc_get_card_det_status,
      .wp_status = sdhc_write_protect,
      .clock_mmc = "esdhc_clk",
};

/*!
 * Resource definition for the SDHC1
 */
static struct resource mxcsdhc1_resources[] = {
      [0] = {
             .start = MMC_SDHC1_BASE_ADDR,
             .end = MMC_SDHC1_BASE_ADDR + SZ_4K - 1,
             .flags = IORESOURCE_MEM,
             },
      [1] = {
             .start = MXC_INT_SDHC1,
             .end = MXC_INT_SDHC1,
             .flags = IORESOURCE_IRQ,
             },
      [2] = {
             .start = IOMUX_TO_IRQ(MX25_PIN_A15),
             .end = IOMUX_TO_IRQ(MX25_PIN_A15),
             .flags = IORESOURCE_IRQ,
             },
};

/*! Device Definition for MXC SDHC1 */
static struct platform_device mxcsdhc1_device = {
      .name = "mxsdhci",
      .id = 0,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &mmc1_data,
            },
      .num_resources = ARRAY_SIZE(mxcsdhc1_resources),
      .resource = mxcsdhc1_resources,
};

#ifdef CONFIG_MMC_IMX_ESDHCI_SELECT2
static struct mxc_mmc_platform_data mmc2_data = {
      .ocr_mask = MMC_VDD_29_30 | MMC_VDD_32_33,
      .caps = MMC_CAP_4_BIT_DATA,
      .min_clk = 400000,
      .max_clk = 52000000,
      .card_fixed = 1,
      .card_inserted_state = 1,
      .status = sdhc_get_card_det_status,
      .clock_mmc = "esdhc2_clk",
};

/*!
 * Resource definition for the SDHC2
 */
static struct resource mxcsdhc2_resources[] = {
      [0] = {
             .start = MMC_SDHC2_BASE_ADDR,
             .end = MMC_SDHC2_BASE_ADDR + SZ_4K - 1,
             .flags = IORESOURCE_MEM,
             },
      [1] = {
             .start = MXC_INT_SDHC2,
             .end = MXC_INT_SDHC2,
             .flags = IORESOURCE_IRQ,
             },
};

/*! Device Definition for MXC SDHC2 */
static struct platform_device mxcsdhc2_device = {
      .name = "mxsdhci",
      .id = 1,
      .dev = {
            .release = mxc_nop_release,
            .platform_data = &mmc2_data,
            },
      .num_resources = ARRAY_SIZE(mxcsdhc2_resources),
      .resource = mxcsdhc2_resources,
};
#endif

static inline void mxc_init_mmc(void)
{
      (void)platform_device_register(&mxcsdhc1_device);
#ifdef CONFIG_MMC_IMX_ESDHCI_SELECT2
      (void)platform_device_register(&mxcsdhc2_device);
#endif
}
#else
static inline void mxc_init_mmc(void)
{
}
#endif

static void __init mx25_3stack_timer_init(void)
{
      mx25_clocks_init(24000000);
}

static struct sys_timer mxc_timer = {
      .init = mx25_3stack_timer_init,
};

#if defined(CONFIG_CAN_FLEXCAN) || defined(CONFIG_CAN_FLEXCAN_MODULE)
static void flexcan_xcvr_enable(int id, int en)
{
      static int pwdn;

      if (id != 1)            /* MX25 3-stack uses only CAN2 */
            return;

      if (en) {
            if (!pwdn++)
                  gpio_set_value(IOMUX_TO_GPIO(MX25_PIN_D14), 0);
      } else {
            if (!--pwdn)
                  gpio_set_value(IOMUX_TO_GPIO(MX25_PIN_D14), 1);
      }
}

struct flexcan_platform_data flexcan_data[] = {
      {
       .core_reg = NULL,
       .io_reg = NULL,
       .xcvr_enable = flexcan_xcvr_enable,
       .active = gpio_can_active,
       .inactive = gpio_can_inactive,},
      {
       .core_reg = NULL,
       .io_reg = NULL,
       .xcvr_enable = flexcan_xcvr_enable,
       .active = gpio_can_active,
       .inactive = gpio_can_inactive,},
};
#endif

/*!
 * Board specific fixup function. It is called by \b setup_arch() in
 * setup.c file very early on during kernel starts. It allows the user to
 * statically fill in the proper values for the passed-in parameters. None of
 * the parameters is used currently.
 *
 * @param  desc         pointer to \b struct \b machine_desc
 * @param  tags         pointer to \b struct \b tag
 * @param  cmdline      pointer to the command line
 * @param  mi           pointer to \b struct \b meminfo
 */
00680 static void __init fixup_mxc_board(struct machine_desc *desc, struct tag *tags,
                           char **cmdline, struct meminfo *mi)
{
      mxc_cpu_init();

#ifdef CONFIG_DISCONTIGMEM
      do {
            int nid;
            mi->nr_banks = MXC_NUMNODES;
            for (nid = 0; nid < mi->nr_banks; nid++)
                  SET_NODE(mi, nid);
      } while (0);
#endif
}

/*!
 * Board specific initialization.
 */
00698 static void __init mxc_board_init(void)
{
      pr_info("AIPS1 VA base: 0x%p\n", IO_ADDRESS(AIPS1_BASE_ADDR));
      mxc_cpu_common_init();
      mxc_register_gpios();
      mx25_3stack_gpio_init();
      early_console_setup(saved_command_line);
      mxc_init_keypad();
#ifdef CONFIG_I2C
      i2c_register_board_info(0, mxc_i2c_board_info,
                        ARRAY_SIZE(mxc_i2c_board_info));
#endif
      spi_register_board_info(mxc_spi_board_info,
                        ARRAY_SIZE(mxc_spi_board_info));
      mx25_3stack_init_mc34704();
      mxc_init_fb();
      mxc_init_bl();
      mxc_init_nand_mtd();
      mxc_init_sgtl5000();
      mxc_init_ak5702();
      mxc_init_mmc();
      mxc_init_sim();
      mxc_init_fec();
}

/*
 * The following uses standard kernel macros define in arch.h in order to
 * initialize __mach_desc_MX25_3DS data structure.
 */
/* *INDENT-OFF* */
MACHINE_START(MX25_3DS, "Freescale MX25 3-Stack Board")
      /* Maintainer: Freescale Semiconductor, Inc. */
      .phys_io = AIPS1_BASE_ADDR,
      .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
      .boot_params = PHYS_OFFSET + 0x100,
      .fixup = fixup_mxc_board,
      .map_io = mx25_map_io,
      .init_irq = mxc_init_irq,
      .init_machine = mxc_board_init,
      .timer = &mxc_timer,
MACHINE_END

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