/*
 * Board-specific setup code for the Miromico Hammerhead board
 *
 * Copyright (C) 2008 Miromico AG
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include <linux/atmel-mci.h>
#include <linux/clk.h>
#include <linux/fb.h>
#include <linux/etherdevice.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/init.h>
#include <linux/linkage.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/spi/spi.h>

#include <video/atmel_lcdc.h>

#include <linux/io.h>
#include <asm/setup.h>

#include <mach/at32ap700x.h>
#include <mach/board.h>
#include <mach/init.h>
#include <mach/portmux.h>

#include <sound/atmel-ac97c.h>

#include "../../mach-at32ap/clock.h"
#include "flash.h"

/* Oscillator frequencies. These are board-specific */
unsigned long at32_board_osc_rates[3] = {
        [0] = 32768,    /* 32.768 kHz on RTC osc */
        [1] = 25000000, /* 25MHz on osc0 */
        [2] = 12000000, /* 12 MHz on osc1 */
};

/* Initialized by bootloader-specific startup code. */
struct tag *bootloader_tags __initdata;

#ifdef CONFIG_BOARD_HAMMERHEAD_LCD
static struct fb_videomode __initdata hda350tlv_modes[] = {
        {
                .name           = "320x240 @ 75",
                .refresh        = 75,
                .xres           = 320,
                .yres           = 240,
                .pixclock       = KHZ2PICOS(6891),

                .left_margin    = 48,
                .right_margin   = 18,
                .upper_margin   = 18,
                .lower_margin   = 4,
                .hsync_len      = 20,
                .vsync_len      = 2,

                .sync           = 0,
                .vmode          = FB_VMODE_NONINTERLACED,
        },
};

static struct fb_monspecs __initdata hammerhead_hda350t_monspecs = {
        .manufacturer           = "HAN",
        .monitor                = "HDA350T-LV",
        .modedb                 = hda350tlv_modes,
        .modedb_len             = ARRAY_SIZE(hda350tlv_modes),
        .hfmin                  = 14900,
        .hfmax                  = 22350,
        .vfmin                  = 60,
        .vfmax                  = 90,
        .dclkmax                = 10000000,
};

struct atmel_lcdfb_pdata __initdata hammerhead_lcdc_data = {
        .default_bpp            = 24,
        .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
        .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
                                   | ATMEL_LCDC_INVCLK
                                   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
                                   | ATMEL_LCDC_MEMOR_BIG),
        .default_monspecs       = &hammerhead_hda350t_monspecs,
        .guard_time             = 2,
};
#endif

static struct mci_platform_data __initdata mci0_data = {
        .slot[0] = {
                .bus_width      = 4,
                .detect_pin     = -ENODEV,
                .wp_pin         = -ENODEV,
        },
};

struct eth_addr {
        u8 addr[6];
};

static struct eth_addr __initdata hw_addr[1];
static struct macb_platform_data __initdata eth_data[1];

/*
 * The next two functions should go away as the boot loader is
 * supposed to initialize the macb address registers with a valid
 * ethernet address. But we need to keep it around for a while until
 * we can be reasonably sure the boot loader does this.
 *
 * The phy_id is ignored as the driver will probe for it.
 */
static int __init parse_tag_ethernet(struct tag *tag)
{
        int i = tag->u.ethernet.mac_index;

        if (i < ARRAY_SIZE(hw_addr))
                memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
                       sizeof(hw_addr[i].addr));

        return 0;
}
__tagtable(ATAG_ETHERNET, parse_tag_ethernet);

static void __init set_hw_addr(struct platform_device *pdev)
{
        struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        const u8 *addr;
        void __iomem *regs;
        struct clk *pclk;

        if (!res)
                return;

        if (pdev->id >= ARRAY_SIZE(hw_addr))
                return;

        addr = hw_addr[pdev->id].addr;

        if (!is_valid_ether_addr(addr))
                return;

        /*
         * Since this is board-specific code, we'll cheat and use the
         * physical address directly as we happen to know that it's
         * the same as the virtual address.
         */
        regs = (void __iomem __force *)res->start;
        pclk = clk_get(&pdev->dev, "pclk");

        if (IS_ERR(pclk))
                return;

        clk_enable(pclk);

        __raw_writel((addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) |
                     addr[0], regs + 0x98);
        __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);

        clk_disable(pclk);
        clk_put(pclk);
}

void __init setup_board(void)
{
        at32_map_usart(1, 0, 0);        /* USART 1: /dev/ttyS0, DB9 */
        at32_setup_serial_console(0);
}

static struct i2c_gpio_platform_data i2c_gpio_data = {
        .sda_pin                = GPIO_PIN_PA(6),
        .scl_pin                = GPIO_PIN_PA(7),
        .sda_is_open_drain      = 1,
        .scl_is_open_drain      = 1,
        .udelay                 = 2,    /* close to 100 kHz */
};

static struct platform_device i2c_gpio_device = {
        .name           = "i2c-gpio",
        .id             = 0,
        .dev            = { .platform_data = &i2c_gpio_data, },
};

static struct i2c_board_info __initdata i2c_info[] = {};

#ifdef CONFIG_BOARD_HAMMERHEAD_SND
static struct ac97c_platform_data ac97c_data = {
        .reset_pin = GPIO_PIN_PA(16),
};
#endif

static int __init hammerhead_init(void)
{
        /*
         * Hammerhead uses 32-bit SDRAM interface. Reserve the
         * SDRAM-specific pins so that nobody messes with them.
         */
        at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);

        at32_add_device_usart(0);

        /* Reserve PB29 (GCLK3). This pin is used as clock source
         * for ETH PHY (25MHz). GCLK3 setup is done by U-Boot.
         */
        at32_reserve_pin(GPIO_PIOB_BASE, (1<<29));

        /*
         * Hammerhead uses only one ethernet port, so we don't set
         * address of second port
         */
        set_hw_addr(at32_add_device_eth(0, &eth_data[0]));

#ifdef CONFIG_BOARD_HAMMERHEAD_FPGA
        at32_add_device_hh_fpga();
#endif
        at32_add_device_mci(0, &mci0_data);

#ifdef CONFIG_BOARD_HAMMERHEAD_USB
        at32_add_device_usba(0, NULL);
#endif
#ifdef CONFIG_BOARD_HAMMERHEAD_LCD
        at32_add_device_lcdc(0, &hammerhead_lcdc_data, fbmem_start,
                             fbmem_size, ATMEL_LCDC_PRI_24BIT);
#endif

        at32_select_gpio(i2c_gpio_data.sda_pin,
                         AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT |
                         AT32_GPIOF_HIGH);
        at32_select_gpio(i2c_gpio_data.scl_pin,
                         AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT |
                         AT32_GPIOF_HIGH);
        platform_device_register(&i2c_gpio_device);
        i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));

#ifdef CONFIG_BOARD_HAMMERHEAD_SND
        at32_add_device_ac97c(0, &ac97c_data, AC97C_BOTH);
#endif

        /* Select the Touchscreen interrupt pin mode */
        at32_select_periph(GPIO_PIOB_BASE, 0x08000000, GPIO_PERIPH_A, 0);

        return 0;
}

postcore_initcall(hammerhead_init);