board-am3517evm.c

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/*
 * linux/arch/arm/mach-omap2/board-am3517evm.c
 *
 * Copyright (C) 2009 Texas Instruments Incorporated
 * Author: Ranjith Lohithakshan <[email protected]>
 *
 * Based on mach-omap2/board-omap3evm.c
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as  published by the
 * Free Software Foundation version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/i2c/pca953x.h>
#include <linux/can/platform/ti_hecc.h>
#include <linux/davinci_emac.h>
#include <linux/mmc/host.h>
#include <linux/platform_data/gpio-omap.h>

#include "am35xx.h"
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include "common.h"
#include <plat/usb.h>
#include <video/omapdss.h>
#include <video/omap-panel-generic-dpi.h>
#include <video/omap-panel-tfp410.h>

#include "am35xx-emac.h"
#include "mux.h"
#include "control.h"
#include "hsmmc.h"

#define LCD_PANEL_PWR       176
#define LCD_PANEL_BKLIGHT_PWR   182
#define LCD_PANEL_PWM       181

static struct i2c_board_info __initdata am3517evm_i2c1_boardinfo[] = {
    {
        I2C_BOARD_INFO("s35390a", 0x30),
    },
};

/*
 * RTC - S35390A
 */
#define GPIO_RTCS35390A_IRQ 55

static void __init am3517_evm_rtc_init(void)
{
    int r;

    omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);

    r = gpio_request_one(GPIO_RTCS35390A_IRQ, GPIOF_IN, "rtcs35390a-irq");
    if (r < 0) {
        printk(KERN_WARNING "failed to request GPIO#%d\n",
                GPIO_RTCS35390A_IRQ);
        return;
    }

    am3517evm_i2c1_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
}

/*
 * I2C GPIO Expander - TCA6416
 */

/* Mounted on Base-Board */
static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
    .gpio_base  = OMAP_MAX_GPIO_LINES,
};
static struct i2c_board_info __initdata am3517evm_i2c2_boardinfo[] = {
    {
        I2C_BOARD_INFO("tlv320aic23", 0x1A),
    },
    {
        I2C_BOARD_INFO("tca6416", 0x21),
        .platform_data = &am3517evm_gpio_expander_info_0,
    },
};

/* Mounted on UI Card */
static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
    .gpio_base  = OMAP_MAX_GPIO_LINES + 16,
};
static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
    .gpio_base  = OMAP_MAX_GPIO_LINES + 32,
};
static struct i2c_board_info __initdata am3517evm_i2c3_boardinfo[] = {
    {
        I2C_BOARD_INFO("tca6416", 0x20),
        .platform_data = &am3517evm_ui_gpio_expander_info_1,
    },
    {
        I2C_BOARD_INFO("tca6416", 0x21),
        .platform_data = &am3517evm_ui_gpio_expander_info_2,
    },
};

static int __init am3517_evm_i2c_init(void)
{
    omap_register_i2c_bus(1, 400, NULL, 0);
    omap_register_i2c_bus(2, 400, am3517evm_i2c2_boardinfo,
            ARRAY_SIZE(am3517evm_i2c2_boardinfo));
    omap_register_i2c_bus(3, 400, am3517evm_i2c3_boardinfo,
            ARRAY_SIZE(am3517evm_i2c3_boardinfo));

    return 0;
}

static int lcd_enabled;
static int dvi_enabled;

#if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
        defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
static struct gpio am3517_evm_dss_gpios[] __initdata = {
    /* GPIO 182 = LCD Backlight Power */
    { LCD_PANEL_BKLIGHT_PWR, GPIOF_OUT_INIT_HIGH, "lcd_backlight_pwr" },
    /* GPIO 181 = LCD Panel PWM */
    { LCD_PANEL_PWM,     GPIOF_OUT_INIT_HIGH, "lcd bl enable"     },
    /* GPIO 176 = LCD Panel Power enable pin */
    { LCD_PANEL_PWR,     GPIOF_OUT_INIT_HIGH, "dvi enable"    },
};

static void __init am3517_evm_display_init(void)
{
    int r;

    omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
    omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
    omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);

    r = gpio_request_array(am3517_evm_dss_gpios,
                   ARRAY_SIZE(am3517_evm_dss_gpios));
    if (r) {
        printk(KERN_ERR "failed to get DSS panel control GPIOs\n");
        return;
    }

    printk(KERN_INFO "Display initialized successfully\n");
}
#else
static void __init am3517_evm_display_init(void) {}
#endif

static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
{
    if (dvi_enabled) {
        printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
        return -EINVAL;
    }
    gpio_set_value(LCD_PANEL_PWR, 1);
    lcd_enabled = 1;

    return 0;
}

static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
{
    gpio_set_value(LCD_PANEL_PWR, 0);
    lcd_enabled = 0;
}

static struct panel_generic_dpi_data lcd_panel = {
    .name           = "sharp_lq",
    .platform_enable    = am3517_evm_panel_enable_lcd,
    .platform_disable   = am3517_evm_panel_disable_lcd,
};

static struct omap_dss_device am3517_evm_lcd_device = {
    .type           = OMAP_DISPLAY_TYPE_DPI,
    .name           = "lcd",
    .driver_name        = "generic_dpi_panel",
    .data           = &lcd_panel,
    .phy.dpi.data_lines     = 16,
};

static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
{
    return 0;
}

static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
{
}

static struct omap_dss_device am3517_evm_tv_device = {
    .type           = OMAP_DISPLAY_TYPE_VENC,
    .name           = "tv",
    .driver_name        = "venc",
    .phy.venc.type      = OMAP_DSS_VENC_TYPE_SVIDEO,
    .platform_enable    = am3517_evm_panel_enable_tv,
    .platform_disable   = am3517_evm_panel_disable_tv,
};

static struct tfp410_platform_data dvi_panel = {
    .power_down_gpio    = -1,
};

static struct omap_dss_device am3517_evm_dvi_device = {
    .type           = OMAP_DISPLAY_TYPE_DPI,
    .name           = "dvi",
    .driver_name        = "tfp410",
    .data           = &dvi_panel,
    .phy.dpi.data_lines = 24,
};

static struct omap_dss_device *am3517_evm_dss_devices[] = {
    &am3517_evm_lcd_device,
    &am3517_evm_tv_device,
    &am3517_evm_dvi_device,
};

static struct omap_dss_board_info am3517_evm_dss_data = {
    .num_devices    = ARRAY_SIZE(am3517_evm_dss_devices),
    .devices    = am3517_evm_dss_devices,
    .default_device = &am3517_evm_lcd_device,
};

/*
 * Board initialization
 */

static struct omap_musb_board_data musb_board_data = {
    .interface_type         = MUSB_INTERFACE_ULPI,
    .mode                   = MUSB_OTG,
    .power                  = 500,
    .set_phy_power      = am35x_musb_phy_power,
    .clear_irq      = am35x_musb_clear_irq,
    .set_mode       = am35x_set_mode,
    .reset          = am35x_musb_reset,
};

static __init void am3517_evm_musb_init(void)
{
    u32 devconf2;

    /*
     * Set up USB clock/mode in the DEVCONF2 register.
     */
    devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2);

    /* USB2.0 PHY reference clock is 13 MHz */
    devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE);
    devconf2 |=  CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN
            | CONF2_DATPOL;

    omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2);

    usb_musb_init(&musb_board_data);
}

static __init void am3517_evm_mcbsp1_init(void)
{
    u32 devconf0;

    /* McBSP1 CLKR/FSR signal to be connected to CLKX/FSX pin */
    devconf0 = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
    devconf0 |=  OMAP2_MCBSP1_CLKR_MASK | OMAP2_MCBSP1_FSR_MASK;
    omap_ctrl_writel(devconf0, OMAP2_CONTROL_DEVCONF0);
}

static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
    .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
#if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
        defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
    .port_mode[1] = OMAP_USBHS_PORT_MODE_UNUSED,
#else
    .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
#endif
    .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,

    .phy_reset  = true,
    .reset_gpio_port[0]  = 57,
    .reset_gpio_port[1]  = -EINVAL,
    .reset_gpio_port[2]  = -EINVAL
};

#ifdef CONFIG_OMAP_MUX
static struct omap_board_mux board_mux[] __initdata = {
    /* USB OTG DRVVBUS offset = 0x212 */
    OMAP3_MUX(SAD2D_MCAD23, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
    { .reg_offset = OMAP_MUX_TERMINATOR },
};
#endif


static struct resource am3517_hecc_resources[] = {
    {
        .start  = AM35XX_IPSS_HECC_BASE,
        .end    = AM35XX_IPSS_HECC_BASE + 0x3FFF,
        .flags  = IORESOURCE_MEM,
    },
    {
        .start  = 24 + OMAP_INTC_START,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device am3517_hecc_device = {
    .name       = "ti_hecc",
    .id     = -1,
    .num_resources  = ARRAY_SIZE(am3517_hecc_resources),
    .resource   = am3517_hecc_resources,
};

static struct ti_hecc_platform_data am3517_evm_hecc_pdata = {
    .scc_hecc_offset    = AM35XX_HECC_SCC_HECC_OFFSET,
    .scc_ram_offset     = AM35XX_HECC_SCC_RAM_OFFSET,
    .hecc_ram_offset    = AM35XX_HECC_RAM_OFFSET,
    .mbx_offset     = AM35XX_HECC_MBOX_OFFSET,
    .int_line       = AM35XX_HECC_INT_LINE,
    .version        = AM35XX_HECC_VERSION,
};

static void am3517_evm_hecc_init(struct ti_hecc_platform_data *pdata)
{
    am3517_hecc_device.dev.platform_data = pdata;
    platform_device_register(&am3517_hecc_device);
}

static struct omap2_hsmmc_info mmc[] = {
    {
        .mmc        = 1,
        .caps       = MMC_CAP_4_BIT_DATA,
        .gpio_cd    = 127,
        .gpio_wp    = 126,
    },
    {
        .mmc        = 2,
        .caps       = MMC_CAP_4_BIT_DATA,
        .gpio_cd    = 128,
        .gpio_wp    = 129,
    },
    {}      /* Terminator */
};


static void __init am3517_evm_init(void)
{
    omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);

    am3517_evm_i2c_init();
    omap_display_init(&am3517_evm_dss_data);
    omap_serial_init();
    omap_sdrc_init(NULL, NULL);

    /* Configure GPIO for EHCI port */
    omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
    usbhs_init(&usbhs_bdata);
    am3517_evm_hecc_init(&am3517_evm_hecc_pdata);
    /* DSS */
    am3517_evm_display_init();

    /* RTC - S35390A */
    am3517_evm_rtc_init();

    i2c_register_board_info(1, am3517evm_i2c1_boardinfo,
                ARRAY_SIZE(am3517evm_i2c1_boardinfo));
    /*Ethernet*/
    am35xx_emac_init(AM35XX_DEFAULT_MDIO_FREQUENCY, 1);

    /* MUSB */
    am3517_evm_musb_init();

    /* McBSP1 */
    am3517_evm_mcbsp1_init();

    /* MMC init function */
    omap_hsmmc_init(mmc);
}

MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
    .atag_offset    = 0x100,
    .reserve    = omap_reserve,
    .map_io     = omap3_map_io,
    .init_early = am35xx_init_early,
    .init_irq   = omap3_init_irq,
    .handle_irq = omap3_intc_handle_irq,
    .init_machine   = am3517_evm_init,
    .init_late  = am35xx_init_late,
    .timer      = &omap3_timer,
    .restart    = omap_prcm_restart,
MACHINE_END