board-osk.c

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/*
 * linux/arch/arm/mach-omap1/board-osk.c
 *
 * Board specific init for OMAP5912 OSK
 *
 * Written by Dirk Behme <[email protected]>
 *
 * 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; either version 2 of the License, or (at your
 * option) any later version.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * You should have received a copy of the  GNU General Public License along
 * with this program; if not, write  to the Free Software Foundation, Inc.,
 * 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/smc91x.h>
#include <linux/omapfb.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c/tps65010.h>
#include <linux/platform_data/gpio-omap.h>
#include <linux/platform_data/omap1_bl.h>

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

#include <mach/flash.h>
#include <mach/mux.h>
#include <plat/tc.h>

#include <mach/hardware.h>
#include <mach/usb.h>

#include "common.h"

/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
#define OMAP_OSK_ETHR_START     0x04800300

/* TPS65010 has four GPIOs.  nPG and LED2 can be treated like GPIOs with
 * alternate pin configurations for hardware-controlled blinking.
 */
#define OSK_TPS_GPIO_BASE       (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)
#   define OSK_TPS_GPIO_USB_PWR_EN  (OSK_TPS_GPIO_BASE + 0)
#   define OSK_TPS_GPIO_LED_D3  (OSK_TPS_GPIO_BASE + 1)
#   define OSK_TPS_GPIO_LAN_RESET   (OSK_TPS_GPIO_BASE + 2)
#   define OSK_TPS_GPIO_DSP_PWR_EN  (OSK_TPS_GPIO_BASE + 3)
#   define OSK_TPS_GPIO_LED_D9  (OSK_TPS_GPIO_BASE + 4)
#   define OSK_TPS_GPIO_LED_D2  (OSK_TPS_GPIO_BASE + 5)

static struct mtd_partition osk_partitions[] = {
    /* bootloader (U-Boot, etc) in first sector */
    {
          .name     = "bootloader",
          .offset       = 0,
          .size     = SZ_128K,
          .mask_flags   = MTD_WRITEABLE, /* force read-only */
    },
    /* bootloader params in the next sector */
    {
          .name     = "params",
          .offset       = MTDPART_OFS_APPEND,
          .size     = SZ_128K,
          .mask_flags   = 0,
    }, {
          .name     = "kernel",
          .offset       = MTDPART_OFS_APPEND,
          .size     = SZ_2M,
          .mask_flags   = 0
    }, {
          .name     = "filesystem",
          .offset       = MTDPART_OFS_APPEND,
          .size     = MTDPART_SIZ_FULL,
          .mask_flags   = 0
    }
};

static struct physmap_flash_data osk_flash_data = {
    .width      = 2,
    .set_vpp    = omap1_set_vpp,
    .parts      = osk_partitions,
    .nr_parts   = ARRAY_SIZE(osk_partitions),
};

static struct resource osk_flash_resource = {
    /* this is on CS3, wherever it's mapped */
    .flags      = IORESOURCE_MEM,
};

static struct platform_device osk5912_flash_device = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data  = &osk_flash_data,
    },
    .num_resources  = 1,
    .resource   = &osk_flash_resource,
};

static struct smc91x_platdata osk5912_smc91x_info = {
    .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
    .leda   = RPC_LED_100_10,
    .ledb   = RPC_LED_TX_RX,
};

static struct resource osk5912_smc91x_resources[] = {
    [0] = {
        .start  = OMAP_OSK_ETHR_START,      /* Physical */
        .end    = OMAP_OSK_ETHR_START + 0xf,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
    },
};

static struct platform_device osk5912_smc91x_device = {
    .name       = "smc91x",
    .id     = -1,
    .dev    = {
        .platform_data  = &osk5912_smc91x_info,
    },
    .num_resources  = ARRAY_SIZE(osk5912_smc91x_resources),
    .resource   = osk5912_smc91x_resources,
};

static struct resource osk5912_cf_resources[] = {
    [0] = {
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device osk5912_cf_device = {
    .name       = "omap_cf",
    .id     = -1,
    .dev = {
        .platform_data  = (void *) 2 /* CS2 */,
    },
    .num_resources  = ARRAY_SIZE(osk5912_cf_resources),
    .resource   = osk5912_cf_resources,
};

static struct platform_device *osk5912_devices[] __initdata = {
    &osk5912_flash_device,
    &osk5912_smc91x_device,
    &osk5912_cf_device,
};

static struct gpio_led tps_leds[] = {
    /* NOTE:  D9 and D2 have hardware blink support.
     * Also, D9 requires non-battery power.
     */
    { .gpio = OSK_TPS_GPIO_LED_D9, .name = "d9",
            .default_trigger = "ide-disk", },
    { .gpio = OSK_TPS_GPIO_LED_D2, .name = "d2", },
    { .gpio = OSK_TPS_GPIO_LED_D3, .name = "d3", .active_low = 1,
            .default_trigger = "heartbeat", },
};

static struct gpio_led_platform_data tps_leds_data = {
    .num_leds   = 3,
    .leds       = tps_leds,
};

static struct platform_device osk5912_tps_leds = {
    .name           = "leds-gpio",
    .id         = 0,
    .dev.platform_data  = &tps_leds_data,
};

static int osk_tps_setup(struct i2c_client *client, void *context)
{
    /* Set GPIO 1 HIGH to disable VBUS power supply;
     * OHCI driver powers it up/down as needed.
     */
    gpio_request(OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en");
    gpio_direction_output(OSK_TPS_GPIO_USB_PWR_EN, 1);

    /* Set GPIO 2 high so LED D3 is off by default */
    tps65010_set_gpio_out_value(GPIO2, HIGH);

    /* Set GPIO 3 low to take ethernet out of reset */
    gpio_request(OSK_TPS_GPIO_LAN_RESET, "smc_reset");
    gpio_direction_output(OSK_TPS_GPIO_LAN_RESET, 0);

    /* GPIO4 is VDD_DSP */
    gpio_request(OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power");
    gpio_direction_output(OSK_TPS_GPIO_DSP_PWR_EN, 1);
    /* REVISIT if DSP support isn't configured, power it off ... */

    /* Let LED1 (D9) blink; leds-gpio may override it */
    tps65010_set_led(LED1, BLINK);

    /* Set LED2 off by default */
    tps65010_set_led(LED2, OFF);

    /* Enable LOW_PWR handshake */
    tps65010_set_low_pwr(ON);

    /* Switch VLDO2 to 3.0V for AIC23 */
    tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
            | TPS_LDO1_ENABLE);

    /* register these three LEDs */
    osk5912_tps_leds.dev.parent = &client->dev;
    platform_device_register(&osk5912_tps_leds);

    return 0;
}

static struct tps65010_board tps_board = {
    .base       = OSK_TPS_GPIO_BASE,
    .outmask    = 0x0f,
    .setup      = osk_tps_setup,
};

static struct i2c_board_info __initdata osk_i2c_board_info[] = {
    {
        I2C_BOARD_INFO("tps65010", 0x48),
        .platform_data  = &tps_board,

    },
    {
        I2C_BOARD_INFO("tlv320aic23", 0x1B),
    },
    /* TODO when driver support is ready:
     *  - optionally on Mistral, ov9640 camera sensor at 0x30
     */
};

static void __init osk_init_smc91x(void)
{
    u32 l;

    if ((gpio_request(0, "smc_irq")) < 0) {
        printk("Error requesting gpio 0 for smc91x irq\n");
        return;
    }

    /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
    l = omap_readl(EMIFS_CCS(1));
    l |= 0x3;
    omap_writel(l, EMIFS_CCS(1));
}

static void __init osk_init_cf(void)
{
    omap_cfg_reg(M7_1610_GPIO62);
    if ((gpio_request(62, "cf_irq")) < 0) {
        printk("Error requesting gpio 62 for CF irq\n");
        return;
    }
    /* the CF I/O IRQ is really active-low */
    irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}

static struct omap_usb_config osk_usb_config __initdata = {
    /* has usb host connector (A) ... for development it can also
     * be used, with a NONSTANDARD gender-bending cable/dongle, as
     * a peripheral.
     */
#ifdef  CONFIG_USB_GADGET_OMAP
    .register_dev   = 1,
    .hmc_mode   = 0,
#else
    .register_host  = 1,
    .hmc_mode   = 16,
    .rwc        = 1,
#endif
    .pins[0]    = 2,
};

#ifdef  CONFIG_OMAP_OSK_MISTRAL
static struct omap_lcd_config osk_lcd_config __initdata = {
    .ctrl_name  = "internal",
};
#endif

#ifdef  CONFIG_OMAP_OSK_MISTRAL

#include <linux/input.h>
#include <linux/i2c/at24.h>
#include <linux/spi/spi.h>
#include <linux/spi/ads7846.h>

#include <linux/platform_data/keypad-omap.h>

static struct at24_platform_data at24c04 = {
    .byte_len   = SZ_4K / 8,
    .page_size  = 16,
};

static struct i2c_board_info __initdata mistral_i2c_board_info[] = {
    {
        /* NOTE:  powered from LCD supply */
        I2C_BOARD_INFO("24c04", 0x50),
        .platform_data  = &at24c04,
    },
    /* TODO when driver support is ready:
     *  - optionally ov9640 camera sensor at 0x30
     */
};

static const unsigned int osk_keymap[] = {
    /* KEY(col, row, code) */
    KEY(0, 0, KEY_F1),      /* SW4 */
    KEY(3, 0, KEY_UP),      /* (sw2/up) */
    KEY(1, 1, KEY_LEFTCTRL),    /* SW5 */
    KEY(2, 1, KEY_LEFT),        /* (sw2/left) */
    KEY(0, 2, KEY_SPACE),       /* SW3 */
    KEY(1, 2, KEY_ESC),     /* SW6 */
    KEY(2, 2, KEY_DOWN),        /* (sw2/down) */
    KEY(2, 3, KEY_ENTER),       /* (sw2/select) */
    KEY(3, 3, KEY_RIGHT),       /* (sw2/right) */
};

static const struct matrix_keymap_data osk_keymap_data = {
    .keymap     = osk_keymap,
    .keymap_size    = ARRAY_SIZE(osk_keymap),
};

static struct omap_kp_platform_data osk_kp_data = {
    .rows       = 8,
    .cols       = 8,
    .keymap_data    = &osk_keymap_data,
    .delay      = 9,
};

static struct resource osk5912_kp_resources[] = {
    [0] = {
        .start  = INT_KEYBOARD,
        .end    = INT_KEYBOARD,
        .flags  = IORESOURCE_IRQ,
    },
};

static struct platform_device osk5912_kp_device = {
    .name       = "omap-keypad",
    .id     = -1,
    .dev        = {
        .platform_data = &osk_kp_data,
    },
    .num_resources  = ARRAY_SIZE(osk5912_kp_resources),
    .resource   = osk5912_kp_resources,
};

static struct omap_backlight_config mistral_bl_data = {
    .default_intensity  = 0xa0,
};

static struct platform_device mistral_bl_device = {
    .name       = "omap-bl",
    .id     = -1,
    .dev        = {
        .platform_data = &mistral_bl_data,
    },
};

static struct platform_device osk5912_lcd_device = {
    .name       = "lcd_osk",
    .id     = -1,
};

static struct gpio_led mistral_gpio_led_pins[] = {
    {
        .name       = "mistral:red",
        .default_trigger = "heartbeat",
        .gpio       = 3,
    },
    {
        .name       = "mistral:green",
        .default_trigger = "cpu0",
        .gpio       = OMAP_MPUIO(4),
    },
};

static struct gpio_led_platform_data mistral_gpio_led_data = {
    .leds       = mistral_gpio_led_pins,
    .num_leds   = ARRAY_SIZE(mistral_gpio_led_pins),
};

static struct platform_device mistral_gpio_leds = {
    .name   = "leds-gpio",
    .id = -1,
    .dev    = {
        .platform_data = &mistral_gpio_led_data,
    },
};

static struct platform_device *mistral_devices[] __initdata = {
    &osk5912_kp_device,
    &mistral_bl_device,
    &osk5912_lcd_device,
    &mistral_gpio_leds,
};

static int mistral_get_pendown_state(void)
{
    return !gpio_get_value(4);
}

static const struct ads7846_platform_data mistral_ts_info = {
    .model          = 7846,
    .vref_delay_usecs   = 100,  /* internal, no capacitor */
    .x_plate_ohms       = 419,
    .y_plate_ohms       = 486,
    .get_pendown_state  = mistral_get_pendown_state,
};

static struct spi_board_info __initdata mistral_boardinfo[] = { {
    /* MicroWire (bus 2) CS0 has an ads7846e */
    .modalias       = "ads7846",
    .platform_data      = &mistral_ts_info,
    .max_speed_hz       = 120000 /* max sample rate at 3V */
                    * 26 /* command + data + overhead */,
    .bus_num        = 2,
    .chip_select        = 0,
} };

#ifdef  CONFIG_PM
static irqreturn_t
osk_mistral_wake_interrupt(int irq, void *ignored)
{
    return IRQ_HANDLED;
}
#endif

static void __init osk_mistral_init(void)
{
    /* NOTE:  we could actually tell if there's a Mistral board
     * attached, e.g. by trying to read something from the ads7846.
     * But this arch_init() code is too early for that, since we
     * can't talk to the ads or even the i2c eeprom.
     */

    /* parallel camera interface */
    omap_cfg_reg(J15_1610_CAM_LCLK);
    omap_cfg_reg(J18_1610_CAM_D7);
    omap_cfg_reg(J19_1610_CAM_D6);
    omap_cfg_reg(J14_1610_CAM_D5);
    omap_cfg_reg(K18_1610_CAM_D4);
    omap_cfg_reg(K19_1610_CAM_D3);
    omap_cfg_reg(K15_1610_CAM_D2);
    omap_cfg_reg(K14_1610_CAM_D1);
    omap_cfg_reg(L19_1610_CAM_D0);
    omap_cfg_reg(L18_1610_CAM_VS);
    omap_cfg_reg(L15_1610_CAM_HS);
    omap_cfg_reg(M19_1610_CAM_RSTZ);
    omap_cfg_reg(Y15_1610_CAM_OUTCLK);

    /* serial camera interface */
    omap_cfg_reg(H19_1610_CAM_EXCLK);
    omap_cfg_reg(W13_1610_CCP_CLKM);
    omap_cfg_reg(Y12_1610_CCP_CLKP);
    /* CCP_DATAM CONFLICTS WITH UART1.TX (and serial console) */
    /* omap_cfg_reg(Y14_1610_CCP_DATAM); */
    omap_cfg_reg(W14_1610_CCP_DATAP);

    /* CAM_PWDN */
    if (gpio_request(11, "cam_pwdn") == 0) {
        omap_cfg_reg(N20_1610_GPIO11);
        gpio_direction_output(11, 0);
    } else
        pr_debug("OSK+Mistral: CAM_PWDN is awol\n");


    /* omap_cfg_reg(P19_1610_GPIO6); */ /* BUSY */
    gpio_request(6, "ts_busy");
    gpio_direction_input(6);

    omap_cfg_reg(P20_1610_GPIO4);   /* PENIRQ */
    gpio_request(4, "ts_int");
    gpio_direction_input(4);
    irq_set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);

    mistral_boardinfo[0].irq = gpio_to_irq(4);
    spi_register_board_info(mistral_boardinfo,
            ARRAY_SIZE(mistral_boardinfo));

    /* the sideways button (SW1) is for use as a "wakeup" button
     *
     * NOTE:  The Mistral board has the wakeup button (SW1) wired
     * to the LCD 3.3V rail, which is powered down during suspend.
     * To allow this button to wake up the omap, work around this
     * HW bug by rewiring SW1 to use the main 3.3V rail.
     */
    omap_cfg_reg(N15_1610_MPUIO2);
    if (gpio_request(OMAP_MPUIO(2), "wakeup") == 0) {
        int ret = 0;
        int irq = gpio_to_irq(OMAP_MPUIO(2));

        gpio_direction_input(OMAP_MPUIO(2));
        irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
#ifdef  CONFIG_PM
        /* share the IRQ in case someone wants to use the
         * button for more than wakeup from system sleep.
         */
        ret = request_irq(irq,
                &osk_mistral_wake_interrupt,
                IRQF_SHARED, "mistral_wakeup",
                &osk_mistral_wake_interrupt);
        if (ret != 0) {
            gpio_free(OMAP_MPUIO(2));
            printk(KERN_ERR "OSK+Mistral: no wakeup irq, %d?\n",
                ret);
        } else
            enable_irq_wake(irq);
#endif
    } else
        printk(KERN_ERR "OSK+Mistral: wakeup button is awol\n");

    /* LCD:  backlight, and power; power controls other devices on the
     * board, like the touchscreen, EEPROM, and wakeup (!) switch.
     */
    omap_cfg_reg(PWL);
    if (gpio_request(2, "lcd_pwr") == 0)
        gpio_direction_output(2, 1);

    /*
     * GPIO based LEDs
     */
    omap_cfg_reg(P18_1610_GPIO3);
    omap_cfg_reg(MPUIO4);

    i2c_register_board_info(1, mistral_i2c_board_info,
            ARRAY_SIZE(mistral_i2c_board_info));

    platform_add_devices(mistral_devices, ARRAY_SIZE(mistral_devices));
}
#else
static void __init osk_mistral_init(void) { }
#endif

#define EMIFS_CS3_VAL   (0x88013141)

static void __init osk_init(void)
{
    u32 l;

    osk_init_smc91x();
    osk_init_cf();

    /* Workaround for wrong CS3 (NOR flash) timing
     * There are some U-Boot versions out there which configure
     * wrong CS3 memory timings. This mainly leads to CRC
     * or similar errors if you use NOR flash (e.g. with JFFS2)
     */
    l = omap_readl(EMIFS_CCS(3));
    if (l != EMIFS_CS3_VAL)
        omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));

    osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
    osk_flash_resource.end += SZ_32M - 1;
    osk5912_smc91x_resources[1].start = gpio_to_irq(0);
    osk5912_smc91x_resources[1].end = gpio_to_irq(0);
    osk5912_cf_resources[0].start = gpio_to_irq(62);
    osk5912_cf_resources[0].end = gpio_to_irq(62);
    platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));

    l = omap_readl(USB_TRANSCEIVER_CTRL);
    l |= (3 << 1);
    omap_writel(l, USB_TRANSCEIVER_CTRL);

    omap1_usb_init(&osk_usb_config);

    /* irq for tps65010 chip */
    /* bootloader effectively does:  omap_cfg_reg(U19_1610_MPUIO1); */
    if (gpio_request(OMAP_MPUIO(1), "tps65010") == 0)
        gpio_direction_input(OMAP_MPUIO(1));

    omap_serial_init();
    osk_i2c_board_info[0].irq = gpio_to_irq(OMAP_MPUIO(1));
    omap_register_i2c_bus(1, 400, osk_i2c_board_info,
                  ARRAY_SIZE(osk_i2c_board_info));
    osk_mistral_init();

#ifdef  CONFIG_OMAP_OSK_MISTRAL
    omapfb_set_lcd_config(&osk_lcd_config);
#endif

}

MACHINE_START(OMAP_OSK, "TI-OSK")
    /* Maintainer: Dirk Behme <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = omap16xx_map_io,
    .init_early = omap1_init_early,
    .reserve    = omap_reserve,
    .init_irq   = omap1_init_irq,
    .init_machine   = osk_init,
    .init_late  = omap1_init_late,
    .timer      = &omap1_timer,
    .restart    = omap1_restart,
MACHINE_END