/*
 * linux/arch/arm/mach-omap1/board-osk.c
 *
 * Board specific init for OMAP5912 OSK
 *
 * Written by Dirk Behme <dirk.behme@de.bosch.com>
 *
 * 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/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/mtd/mtd.h>
#include <linux/mtd/partitions.h>

#include <linux/i2c/tps65010.h>

#include <mach/hardware.h>
#include <asm/gpio.h>

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

#include <mach/usb.h>
#include <mach/mux.h>
#include <mach/tc.h>
#include <mach/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 flash_platform_data osk_flash_data = {
        .map_name       = "cfi_probe",
        .width          = 2,
        .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           = "omapflash",
        .id             = 0,
        .dev            = {
                .platform_data  = &osk_flash_data,
        },
        .num_resources  = 1,
        .resource       = &osk_flash_resource,
};

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

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

static struct resource osk5912_cf_resources[] = {
        [0] = {
                .start  = OMAP_GPIO_IRQ(62),
                .end    = OMAP_GPIO_IRQ(62),
                .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),
                .irq            = OMAP_GPIO_IRQ(OMAP_MPUIO(1)),
                .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 */
        set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}

static void __init osk_init_irq(void)
{
        omap1_init_common_hw();
        omap_init_irq();
        omap_gpio_init();
        osk_init_smc91x();
        osk_init_cf();
}

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

static struct omap_board_config_kernel osk_config[] __initdata = {
#ifdef  CONFIG_OMAP_OSK_MISTRAL
        { OMAP_TAG_LCD,                 &osk_lcd_config },
#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 <mach/keypad.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 int osk_keymap[] = {
        /* KEY(col, row, code) */
        KEY(0, 0, KEY_F1),              /* SW4 */
        KEY(0, 3, KEY_UP),              /* (sw2/up) */
        KEY(1, 1, KEY_LEFTCTRL),        /* SW5 */
        KEY(1, 2, KEY_LEFT),            /* (sw2/left) */
        KEY(2, 0, KEY_SPACE),           /* SW3 */
        KEY(2, 1, KEY_ESC),             /* SW6 */
        KEY(2, 2, KEY_DOWN),            /* (sw2/down) */
        KEY(3, 2, KEY_ENTER),           /* (sw2/select) */
        KEY(3, 3, KEY_RIGHT),           /* (sw2/right) */
        0
};

static struct omap_kp_platform_data osk_kp_data = {
        .rows           = 8,
        .cols           = 8,
        .keymap         = (int *) osk_keymap,
        .keymapsize     = ARRAY_SIZE(osk_keymap),
        .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 platform_device *mistral_devices[] __initdata = {
        &osk5912_kp_device,
        &mistral_bl_device,
        &osk5912_lcd_device,
};

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,
        .irq                    = OMAP_GPIO_IRQ(4),
        .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);
        set_irq_type(gpio_to_irq(4), IRQ_TYPE_EDGE_FALLING);

        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));
                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);

        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;

        /* 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;
        platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
        omap_board_config = osk_config;
        omap_board_config_size = ARRAY_SIZE(osk_config);

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

        omap_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();
        omap_register_i2c_bus(1, 400, osk_i2c_board_info,
                              ARRAY_SIZE(osk_i2c_board_info));
        osk_mistral_init();
}

static void __init osk_map_io(void)
{
        omap1_map_common_io();
}

MACHINE_START(OMAP_OSK, "TI-OSK")
        /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
        .phys_io        = 0xfff00000,
        .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
        .boot_params    = 0x10000100,
        .map_io         = osk_map_io,
        .init_irq       = osk_init_irq,
        .init_machine   = osk_init,
        .timer          = &omap_timer,
MACHINE_END