/*
 * Critical Link MityOMAP-L138 SoM Baseboard initializtaion file
 *
 */
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/flash.h>
#include <linux/delay.h>
#include <linux/mtd/mtd.h>
#include <linux/usb/musb.h>
#include <linux/mtd/partitions.h>


#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/setup.h>
#include <mach/mux.h>
#include <mach/da8xx.h>
#include <linux/can/platform/mcp251x.h>

#define BASEBOARD_NAME "System9000"

#define SPI1_FLASH_CS_N		GPIO_TO_PIN(2, 15)	// System configuration flash (optional)

/*
 * GPIO pins
 */

static short sys9000_gpio_pins[] __initdata = {
	DA850_GPIO0_1,		// SYNC_PLL_CLK2_LOS
	DA850_GPIO0_3,		// SYNC_PLL_LOL
	DA850_GPIO0_5,		// SYNC_PLL_CLK1_LOS
	DA850_GPIO0_7,		// SYNC_MASTER_EN
	DA850_GPIO0_8,		// SOM_GP0_8
	DA850_GPIO0_9,		// TEST_LED_0
	DA850_GPIO0_10,		// SYS_GOOD_LED_YEL
	DA850_GPIO0_11,		// SYS_GOOD_LED_GRN
	DA850_GPIO0_12,		// SYNC_LED_YEL
	DA850_GPIO0_13,		// SYNC_LED_GRN
	DA850_GPIO0_14,		// REC_LED_RED
	DA850_GPIO0_15,		// REC_LED_GRN

	DA850_GPIO1_4,		// TEST_POINT_1
	DA850_GPIO1_5,		// TEST_POINT_0
	
	DA850_GPIO4_0, 		// VCAL_EN
	DA850_GPIO4_1,  	// VCAL_EN_n
	DA850_GPIO4_2,		// ECAL_EN_n
	DA850_GPIO4_3,		// ECAL_EN_n
	DA850_GPIO4_4, 		// VCAL_ZERO
	DA850_GPIO4_5,  	// VCAL_OUT_EN
	DA850_GPIO4_6,		// VCAL_SPARE
	DA850_GPIO4_7,		// SSD_DET_N

	DA850_GPIO5_14,		// TEST_LED_1

	DA850_GPIO6_0,		// SOM_GP6_0
	DA850_GPIO6_1,		// SOM_GP6_1
	DA850_GPIO6_2,		// SOM_GP6_2
	DA850_GPIO6_3,		// SOM_GP6_3
	DA850_GPIO6_4,		// SOM_GP6_4
	DA850_GPIO6_6,		// SOM_GP6_6
	DA850_GPIO6_7,		// SOM_GP6_7
	DA850_GPIO6_8,		// SOM_GP6_8
	DA850_GPIO6_9,		// SOM_GP6_9
	DA850_GPIO6_10,		// SOM_GP6_10
	DA850_GPIO6_11,		// SOM_GP6_11

	DA850_GPIO7_0,		// LDAC0_n
	DA850_GPIO7_1,		// LDAC1_n
	DA850_GPIO7_2,		// LDAC2_n
	DA850_GPIO7_3,		// LDAC3_n
	DA850_GPIO7_4,		// LDAC4_n
	DA850_GPIO7_5,		// LDAC5_n
	DA850_GPIO7_6,		// LDAC6_n

	DA850_GPIO7_8,		// CARD_DET3
	DA850_GPIO7_9,		// CARD_DET2
	DA850_GPIO7_10,		// CARD_DET1
	DA850_GPIO7_11,		// CARD_DET0

	DA850_GPIO7_12,		// DIO_0_OUT
	DA850_GPIO7_13,		// DIO_0_IN
	DA850_GPIO7_14,		// DIO_1_OUT
	DA850_GPIO7_15,		// DIO_1_IN

	DA850_GPIO8_8,		// SYS_RST_N
	DA850_GPIO8_10, 	// Factory Reset In
	DA850_GPIO8_12, 	// HW_REV_0
	DA850_GPIO8_13, 	// HW_REV_1
	DA850_GPIO8_14, 	// HW_REV_2
	DA850_GPIO8_15, 	// HW_REV_3
	-1,
};


/*
 * SPI Devices:
 *	SPI1_CS1: Flash M25PE80
 */
static struct mtd_partition sys9000_spi_flash_partitions[] = {
	[0] = {
		.name		= "sys9000_cfg",
		.offset		= 0,
		.size		= SZ_512K,
		.mask_flags	= MTD_WRITEABLE,
	},
	[1] = {
		.name		= "sys9000_cal",
		.offset		= MTDPART_OFS_APPEND,
		.size		= MTDPART_SIZ_FULL,
		.mask_flags	= MTD_WRITEABLE,
	},
};

// Copied from board-mityomapl138.c in this directory
static struct flash_platform_data sys9000_spi_flash_data = {
	.name		= "M25PE80",
	.parts		= sys9000_spi_flash_partitions,
	.nr_parts	= ARRAY_SIZE(sys9000_spi_flash_partitions),
	.type		= "m25p64-nonjedec",
};

static struct davinci_spi_config spi_M25PE80_config = {
	.io_type	= SPI_IO_TYPE_DMA,
	.c2tdelay	= 8,
	.t2cdelay	= 8,
};

static struct spi_board_info sys9000_spi1_info[] = {
	[0] = {
		.modalias		= "M25PE80",
		.platform_data		= &sys9000_spi_flash_data,
		.controller_data	= &spi_M25PE80_config,
		.mode			= SPI_MODE_0,
		.max_speed_hz		= 30000000,
		.bus_num		= 1,
		.chip_select		= 1,
	},
};

// TODO: does spi1_cs[] need to have 2 elements?
static u8 spi1_cs[] = {
	SPI_INTERN_CS,
	SPI1_FLASH_CS_N,
};

static void __init baseboard_setup_spi(void)
{
	int ret;

	ret = gpio_request(SPI1_FLASH_CS_N, "Sys9000 SPI FLASH CS\n");
	if (ret)
		pr_warning("%s: can not open Sys9000 SPI CS %d\n", __func__, SPI1_FLASH_CS_N);

	ret = spi_register_board_info(sys9000_spi1_info,
					ARRAY_SIZE(sys9000_spi1_info));
	if (ret)
		pr_warning("%s: Unable to register SPI1 Info: %d\n", __func__,
				ret);
}

static int __init baseboard_pre_init(void)
{
	pr_info("%s: Entered\n", __func__);
	da8xx_spi_pdata[1].chip_sel = spi1_cs;
	da8xx_spi_pdata[1].num_chipselect = ARRAY_SIZE(spi1_cs);
	davinci_soc_info.emac_pdata->phy_id = "0:03";
	return 0;
}
postcore_initcall_sync(baseboard_pre_init);

static int __init baseboard_init(void)
{
	pr_info("%s [%s]...\n", __func__, BASEBOARD_NAME);

	davinci_cfg_reg_list(sys9000_gpio_pins);

	baseboard_setup_spi();

	return 0;
}
arch_initcall_sync(baseboard_init);