// SPDX-License-Identifier: GPL-2.0+
//
// Copyright (C) 2006 by OpenMoko, Inc.
// Author: Harald Welte <laforge@openmoko.org>
// All rights reserved.

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_gpio.h>
#include <linux/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/nand-ecc-sw-hamming.h>
#include <linux/mtd/partitions.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>

#include <asm/irq.h>
#include <asm/mach-types.h>

#include <linux/platform_data/leds-s3c24xx.h>
#include <linux/platform_data/fb-s3c2410.h>
#include <linux/platform_data/mtd-nand-s3c2410.h>
#include <linux/platform_data/usb-s3c2410_udc.h>
#include <linux/platform_data/i2c-s3c2410.h>
#include "gpio-samsung.h"

#include "gpio-cfg.h"
#include "devs.h"
#include "cpu.h"
#include "pm.h"

#include "s3c24xx.h"
#include "common-smdk-s3c24xx.h"

static struct map_desc qt2410_iodesc[] __initdata = {
	{ 0xe0000000, __phys_to_pfn(S3C2410_CS3+0x01000000), SZ_1M, MT_DEVICE }
};

#define UCON S3C2410_UCON_DEFAULT
#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE

static struct s3c2410_uartcfg smdk2410_uartcfgs[] = {
	[0] = {
		.hwport	     = 0,
		.flags	     = 0,
		.ucon	     = UCON,
		.ulcon	     = ULCON,
		.ufcon	     = UFCON,
	},
	[1] = {
		.hwport	     = 1,
		.flags	     = 0,
		.ucon	     = UCON,
		.ulcon	     = ULCON,
		.ufcon	     = UFCON,
	},
	[2] = {
		.hwport	     = 2,
		.flags	     = 0,
		.ucon	     = UCON,
		.ulcon	     = ULCON,
		.ufcon	     = UFCON,
	}
};

/* LCD driver info */

static struct s3c2410fb_display qt2410_lcd_cfg[] __initdata = {
	{
		/* Configuration for 640x480 SHARP LQ080V3DG01 */
		.lcdcon5 = S3C2410_LCDCON5_FRM565 |
			   S3C2410_LCDCON5_INVVLINE |
			   S3C2410_LCDCON5_INVVFRAME |
			   S3C2410_LCDCON5_PWREN |
			   S3C2410_LCDCON5_HWSWP,

		.type		= S3C2410_LCDCON1_TFT,
		.width		= 640,
		.height		= 480,

		.pixclock	= 40000, /* HCLK/4 */
		.xres		= 640,
		.yres		= 480,
		.bpp		= 16,
		.left_margin	= 44,
		.right_margin	= 116,
		.hsync_len	= 96,
		.upper_margin	= 19,
		.lower_margin	= 11,
		.vsync_len	= 15,
	},
	{
		/* Configuration for 480x640 toppoly TD028TTEC1 */
		.lcdcon5 = S3C2410_LCDCON5_FRM565 |
			   S3C2410_LCDCON5_INVVLINE |
			   S3C2410_LCDCON5_INVVFRAME |
			   S3C2410_LCDCON5_PWREN |
			   S3C2410_LCDCON5_HWSWP,

		.type		= S3C2410_LCDCON1_TFT,
		.width		= 480,
		.height		= 640,
		.pixclock	= 40000, /* HCLK/4 */
		.xres		= 480,
		.yres		= 640,
		.bpp		= 16,
		.left_margin	= 8,
		.right_margin	= 24,
		.hsync_len	= 8,
		.upper_margin	= 2,
		.lower_margin	= 4,
		.vsync_len	= 2,
	},
	{
		/* Config for 240x320 LCD */
		.lcdcon5 = S3C2410_LCDCON5_FRM565 |
			   S3C2410_LCDCON5_INVVLINE |
			   S3C2410_LCDCON5_INVVFRAME |
			   S3C2410_LCDCON5_PWREN |
			   S3C2410_LCDCON5_HWSWP,

		.type		= S3C2410_LCDCON1_TFT,
		.width		= 240,
		.height		= 320,
		.pixclock	= 100000, /* HCLK/10 */
		.xres		= 240,
		.yres		= 320,
		.bpp		= 16,
		.left_margin	= 13,
		.right_margin	= 8,
		.hsync_len	= 4,
		.upper_margin	= 2,
		.lower_margin	= 7,
		.vsync_len	= 4,
	},
};


static struct s3c2410fb_mach_info qt2410_fb_info __initdata = {
	.displays 	= qt2410_lcd_cfg,
	.num_displays 	= ARRAY_SIZE(qt2410_lcd_cfg),
	.default_display = 0,

	.lpcsel		= ((0xCE6) & ~7) | 1<<4,
};

/* CS8900 */

static struct resource qt2410_cs89x0_resources[] = {
	[0] = DEFINE_RES_MEM(0x19000000, 17),
	[1] = DEFINE_RES_IRQ(IRQ_EINT9),
};

static struct platform_device qt2410_cs89x0 = {
	.name		= "cirrus-cs89x0",
	.num_resources	= ARRAY_SIZE(qt2410_cs89x0_resources),
	.resource	= qt2410_cs89x0_resources,
};

/* LED */

static struct gpiod_lookup_table qt2410_led_gpio_table = {
	.dev_id = "s3c24xx_led.0",
	.table = {
		GPIO_LOOKUP("GPB", 0, NULL, GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN),
		{ },
	},
};

static struct s3c24xx_led_platdata qt2410_pdata_led = {
	.name		= "led",
	.def_trigger	= "timer",
};

static struct platform_device qt2410_led = {
	.name		= "s3c24xx_led",
	.id		= 0,
	.dev		= {
		.platform_data = &qt2410_pdata_led,
	},
};

/* SPI */

static struct spi_gpio_platform_data spi_gpio_cfg = {
	.num_chipselect	= 1,
};

static struct platform_device qt2410_spi = {
	.name		= "spi_gpio",
	.id		= 1,
	.dev.platform_data = &spi_gpio_cfg,
};

static struct gpiod_lookup_table qt2410_spi_gpiod_table = {
	.dev_id         = "spi_gpio",
	.table          = {
		GPIO_LOOKUP("GPIOG", 7,
			    "sck", GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP("GPIOG", 6,
			    "mosi", GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP("GPIOG", 5,
			    "miso", GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP("GPIOB", 5,
			    "cs", GPIO_ACTIVE_HIGH),
		{ },
	},
};

static struct gpiod_lookup_table qt2410_mmc_gpiod_table = {
	.dev_id = "s3c2410-sdi",
	.table = {
		/* bus pins */
		GPIO_LOOKUP_IDX("GPIOE",  5, "bus", 0, GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("GPIOE",  6, "bus", 1, GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("GPIOE",  7, "bus", 2, GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("GPIOE",  8, "bus", 3, GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("GPIOE",  9, "bus", 4, GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
		{ },
	},
};

/* Board devices */

static struct platform_device *qt2410_devices[] __initdata = {
	&s3c_device_ohci,
	&s3c_device_lcd,
	&s3c_device_wdt,
	&s3c_device_i2c0,
	&s3c_device_iis,
	&s3c_device_sdi,
	&s3c_device_usbgadget,
	&qt2410_spi,
	&qt2410_cs89x0,
	&qt2410_led,
};

static struct mtd_partition __initdata qt2410_nand_part[] = {
	[0] = {
		.name	= "U-Boot",
		.size	= 0x30000,
		.offset	= 0,
	},
	[1] = {
		.name	= "U-Boot environment",
		.offset = 0x30000,
		.size	= 0x4000,
	},
	[2] = {
		.name	= "kernel",
		.offset = 0x34000,
		.size	= SZ_2M,
	},
	[3] = {
		.name	= "initrd",
		.offset	= 0x234000,
		.size	= SZ_4M,
	},
	[4] = {
		.name	= "jffs2",
		.offset = 0x634000,
		.size	= 0x39cc000,
	},
};

static struct s3c2410_nand_set __initdata qt2410_nand_sets[] = {
	[0] = {
		.name		= "NAND",
		.nr_chips	= 1,
		.nr_partitions	= ARRAY_SIZE(qt2410_nand_part),
		.partitions	= qt2410_nand_part,
	},
};

/* choose a set of timings which should suit most 512Mbit
 * chips and beyond.
 */

static struct s3c2410_platform_nand __initdata qt2410_nand_info = {
	.tacls		= 20,
	.twrph0		= 60,
	.twrph1		= 20,
	.nr_sets	= ARRAY_SIZE(qt2410_nand_sets),
	.sets		= qt2410_nand_sets,
	.engine_type	= NAND_ECC_ENGINE_TYPE_SOFT,
};

/* UDC */

static struct s3c2410_udc_mach_info qt2410_udc_cfg = {
};

static char tft_type = 's';

static int __init qt2410_tft_setup(char *str)
{
	tft_type = str[0];
	return 1;
}

__setup("tft=", qt2410_tft_setup);

static void __init qt2410_map_io(void)
{
	s3c24xx_init_io(qt2410_iodesc, ARRAY_SIZE(qt2410_iodesc));
	s3c24xx_init_uarts(smdk2410_uartcfgs, ARRAY_SIZE(smdk2410_uartcfgs));
	s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
}

static void __init qt2410_init_time(void)
{
	s3c2410_init_clocks(12000000);
	s3c24xx_timer_init();
}

static void __init qt2410_machine_init(void)
{
	s3c_nand_set_platdata(&qt2410_nand_info);

	switch (tft_type) {
	case 'p': /* production */
		qt2410_fb_info.default_display = 1;
		break;
	case 'b': /* big */
		qt2410_fb_info.default_display = 0;
		break;
	case 's': /* small */
	default:
		qt2410_fb_info.default_display = 2;
		break;
	}
	s3c24xx_fb_set_platdata(&qt2410_fb_info);

	/* set initial state of the LED GPIO */
	WARN_ON(gpio_request_one(S3C2410_GPB(0), GPIOF_OUT_INIT_HIGH, NULL));
	gpio_free(S3C2410_GPB(0));

	s3c24xx_udc_set_platdata(&qt2410_udc_cfg);
	s3c_i2c0_set_platdata(NULL);

	/* Configure the I2S pins (GPE0...GPE4) in correct mode */
	s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
			      S3C_GPIO_PULL_NONE);
	gpiod_add_lookup_table(&qt2410_spi_gpiod_table);
	s3c_gpio_setpull(S3C2410_GPB(0), S3C_GPIO_PULL_NONE);
	gpiod_add_lookup_table(&qt2410_led_gpio_table);
	gpiod_add_lookup_table(&qt2410_mmc_gpiod_table);
	platform_add_devices(qt2410_devices, ARRAY_SIZE(qt2410_devices));
	s3c_pm_init();
}

MACHINE_START(QT2410, "QT2410")
	.atag_offset	= 0x100,
	.nr_irqs	= NR_IRQS_S3C2410,
	.map_io		= qt2410_map_io,
	.init_irq	= s3c2410_init_irq,
	.init_machine	= qt2410_machine_init,
	.init_time	= qt2410_init_time,
MACHINE_END