[mirror_ubuntu-jammy-kernel.git] / arch / arm / mach-s3c / mach-gta02.c

// SPDX-License-Identifier: GPL-2.0+
//
// S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
//
// Copyright (C) 2006-2009 by Openmoko, Inc.
// Authors: Harald Welte <laforge@openmoko.org>
//          Andy Green <andy@openmoko.org>
//          Werner Almesberger <werner@openmoko.org>
// All rights reserved.

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/serial_s3c.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/i2c.h>

#include <linux/mmc/host.h>

#include <linux/mfd/pcf50633/adc.h>
#include <linux/mfd/pcf50633/backlight.h>
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/gpio.h>
#include <linux/mfd/pcf50633/mbc.h>
#include <linux/mfd/pcf50633/pmic.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 <linux/mtd/physmap.h>

#include <linux/regulator/machine.h>

#include <linux/spi/spi.h>
#include <linux/spi/s3c24xx.h>

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

#include <linux/platform_data/i2c-s3c2410.h>
#include <linux/platform_data/mtd-nand-s3c2410.h>
#include <linux/platform_data/touchscreen-s3c2410.h>
#include <linux/platform_data/usb-ohci-s3c2410.h>
#include <linux/platform_data/usb-s3c2410_udc.h>
#include <linux/platform_data/fb-s3c2410.h>

#include "regs-gpio.h"
#include "regs-irq.h"
#include "gpio-samsung.h"

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

#include "s3c24xx.h"
#include "gta02.h"

static struct pcf50633 *gta02_pcf;

/*
 * This gets called frequently when we paniced.
 */

static long gta02_panic_blink(int state)
{
	char led;

	led = (state) ? 1 : 0;
	gpio_direction_output(GTA02_GPIO_AUX_LED, led);

	return 0;
}


static struct map_desc gta02_iodesc[] __initdata = {
	{
		.virtual	= 0xe0000000,
		.pfn		= __phys_to_pfn(S3C2410_CS3 + 0x01000000),
		.length		= SZ_1M,
		.type		= MT_DEVICE
	},
};

#define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN)
#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)

static struct s3c2410_uartcfg gta02_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,
	},
};

#ifdef CONFIG_CHARGER_PCF50633
/*
 * On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
 * We use this to recognize that we can pull 1A from the USB socket.
 *
 * These constants are the measured pcf50633 ADC levels with the 1A
 * charger / 48K resistor, and with no pulldown resistor.
 */

#define ADC_NOM_CHG_DETECT_1A 6
#define ADC_NOM_CHG_DETECT_USB 43

#ifdef CONFIG_PCF50633_ADC
static void
gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res)
{
	int  ma;

	/* Interpret charger type */
	if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {

		/*
		 * Sanity - stop GPO driving out now that we have a 1A charger
		 * GPO controls USB Host power generation on GTA02
		 */
		pcf50633_gpio_set(pcf, PCF50633_GPO, 0);

		ma = 1000;
	} else
		ma = 100;

	pcf50633_mbc_usb_curlim_set(pcf, ma);
}
#endif

static struct delayed_work gta02_charger_work;
static int gta02_usb_vbus_draw;

static void gta02_charger_worker(struct work_struct *work)
{
	if (gta02_usb_vbus_draw) {
		pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
		return;
	}

#ifdef CONFIG_PCF50633_ADC
	pcf50633_adc_async_read(gta02_pcf,
				PCF50633_ADCC1_MUX_ADCIN1,
				PCF50633_ADCC1_AVERAGE_16,
				gta02_configure_pmu_for_charger,
				NULL);
#else
	/*
	 * If the PCF50633 ADC is disabled we fallback to a
	 * 100mA limit for safety.
	 */
	pcf50633_mbc_usb_curlim_set(gta02_pcf, 100);
#endif
}

#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)

static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
{
	if (irq == PCF50633_IRQ_USBINS) {
		schedule_delayed_work(&gta02_charger_work,
				      GTA02_CHARGER_CONFIGURE_TIMEOUT);

		return;
	}

	if (irq == PCF50633_IRQ_USBREM) {
		cancel_delayed_work_sync(&gta02_charger_work);
		gta02_usb_vbus_draw = 0;
	}
}

static void gta02_udc_vbus_draw(unsigned int ma)
{
	if (!gta02_pcf)
		return;

	gta02_usb_vbus_draw = ma;

	schedule_delayed_work(&gta02_charger_work,
			      GTA02_CHARGER_CONFIGURE_TIMEOUT);
}
#else /* !CONFIG_CHARGER_PCF50633 */
#define gta02_pmu_event_callback	NULL
#define gta02_udc_vbus_draw		NULL
#endif

static char *gta02_batteries[] = {
	"battery",
};

static struct pcf50633_bl_platform_data gta02_backlight_data = {
	.default_brightness = 0x3f,
	.default_brightness_limit = 0,
	.ramp_time = 5,
};

static struct pcf50633_platform_data gta02_pcf_pdata = {
	.resumers = {
		[0] =	PCF50633_INT1_USBINS |
			PCF50633_INT1_USBREM |
			PCF50633_INT1_ALARM,
		[1] =	PCF50633_INT2_ONKEYF,
		[2] =	PCF50633_INT3_ONKEY1S,
		[3] =	PCF50633_INT4_LOWSYS |
			PCF50633_INT4_LOWBAT |
			PCF50633_INT4_HIGHTMP,
	},

	.batteries = gta02_batteries,
	.num_batteries = ARRAY_SIZE(gta02_batteries),

	.charger_reference_current_ma = 1000,

	.backlight_data = &gta02_backlight_data,

	.reg_init_data = {
		[PCF50633_REGULATOR_AUTO] = {
			.constraints = {
				.min_uV = 3300000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.always_on = 1,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_DOWN1] = {
			.constraints = {
				.min_uV = 1300000,
				.max_uV = 1600000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.always_on = 1,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_DOWN2] = {
			.constraints = {
				.min_uV = 1800000,
				.max_uV = 1800000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.apply_uV = 1,
				.always_on = 1,
			},
		},
		[PCF50633_REGULATOR_HCLDO] = {
			.constraints = {
				.min_uV = 2000000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
						REGULATOR_CHANGE_STATUS,
			},
		},
		[PCF50633_REGULATOR_LDO1] = {
			.constraints = {
				.min_uV = 3300000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.valid_ops_mask = REGULATOR_CHANGE_STATUS,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO2] = {
			.constraints = {
				.min_uV = 3300000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO3] = {
			.constraints = {
				.min_uV = 3000000,
				.max_uV = 3000000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO4] = {
			.constraints = {
				.min_uV = 3200000,
				.max_uV = 3200000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.valid_ops_mask = REGULATOR_CHANGE_STATUS,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO5] = {
			.constraints = {
				.min_uV = 3000000,
				.max_uV = 3000000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.valid_ops_mask = REGULATOR_CHANGE_STATUS,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO6] = {
			.constraints = {
				.min_uV = 3000000,
				.max_uV = 3000000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
			},
		},
		[PCF50633_REGULATOR_MEMLDO] = {
			.constraints = {
				.min_uV = 1800000,
				.max_uV = 1800000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
			},
		},

	},
	.mbc_event_callback = gta02_pmu_event_callback,
};


/* NOR Flash. */

#define GTA02_FLASH_BASE	0x18000000 /* GCS3 */
#define GTA02_FLASH_SIZE	0x200000 /* 2MBytes */

static struct physmap_flash_data gta02_nor_flash_data = {
	.width		= 2,
};

static struct resource gta02_nor_flash_resource =
	DEFINE_RES_MEM(GTA02_FLASH_BASE, GTA02_FLASH_SIZE);

static struct platform_device gta02_nor_flash = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &gta02_nor_flash_data,
	},
	.resource	= &gta02_nor_flash_resource,
	.num_resources	= 1,
};


static struct platform_device s3c24xx_pwm_device = {
	.name		= "s3c24xx_pwm",
	.num_resources	= 0,
};

static struct platform_device gta02_dfbmcs320_device = {
	.name = "dfbmcs320",
};

static struct i2c_board_info gta02_i2c_devs[] __initdata = {
	{
		I2C_BOARD_INFO("pcf50633", 0x73),
		.irq = GTA02_IRQ_PCF50633,
		.platform_data = &gta02_pcf_pdata,
	},
	{
		I2C_BOARD_INFO("wm8753", 0x1a),
	},
};

static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
	[0] = {
		/*
		 * This name is also hard-coded in the boot loaders, so
		 * changing it would would require all users to upgrade
		 * their boot loaders, some of which are stored in a NOR
		 * that is considered to be immutable.
		 */
		.name		= "neo1973-nand",
		.nr_chips	= 1,
		.flash_bbt	= 1,
	},
};

/*
 * Choose a set of timings derived from S3C@2442B MCP54
 * data sheet (K5D2G13ACM-D075 MCP Memory).
 */

static struct s3c2410_platform_nand __initdata gta02_nand_info = {
	.tacls		= 0,
	.twrph0		= 25,
	.twrph1		= 15,
	.nr_sets	= ARRAY_SIZE(gta02_nand_sets),
	.sets		= gta02_nand_sets,
	.engine_type	= NAND_ECC_ENGINE_TYPE_SOFT,
};


/* Get PMU to set USB current limit accordingly. */
static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = {
	.vbus_draw	= gta02_udc_vbus_draw,
	.pullup_pin = GTA02_GPIO_USB_PULLUP,
};

/* USB */
static struct s3c2410_hcd_info gta02_usb_info __initdata = {
	.port[0]	= {
		.flags	= S3C_HCDFLG_USED,
	},
	.port[1]	= {
		.flags	= 0,
	},
};

/* Touchscreen */
static struct s3c2410_ts_mach_info gta02_ts_info = {
	.delay			= 10000,
	.presc			= 0xff, /* slow as we can go */
	.oversampling_shift	= 2,
};

/* Buttons */
static struct gpio_keys_button gta02_buttons[] = {
	{
		.gpio = GTA02_GPIO_AUX_KEY,
		.code = KEY_PHONE,
		.desc = "Aux",
		.type = EV_KEY,
		.debounce_interval = 100,
	},
	{
		.gpio = GTA02_GPIO_HOLD_KEY,
		.code = KEY_PAUSE,
		.desc = "Hold",
		.type = EV_KEY,
		.debounce_interval = 100,
	},
};

static struct gpio_keys_platform_data gta02_buttons_pdata = {
	.buttons = gta02_buttons,
	.nbuttons = ARRAY_SIZE(gta02_buttons),
};

static struct platform_device gta02_buttons_device = {
	.name = "gpio-keys",
	.id = -1,
	.dev = {
		.platform_data = &gta02_buttons_pdata,
	},
};

static struct gpiod_lookup_table gta02_audio_gpio_table = {
	.dev_id = "neo1973-audio",
	.table = {
		GPIO_LOOKUP("GPIOJ", 2, "amp-shut", GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP("GPIOJ", 1, "hp", GPIO_ACTIVE_HIGH),
		{ },
	},
};

static struct platform_device gta02_audio = {
	.name = "neo1973-audio",
	.id = -1,
};

static struct gpiod_lookup_table gta02_mmc_gpio_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),
		{ },
	},
};

static void __init gta02_map_io(void)
{
	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
	s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
}


/* These are the guys that don't need to be children of PMU. */

static struct platform_device *gta02_devices[] __initdata = {
	&s3c_device_ohci,
	&s3c_device_wdt,
	&s3c_device_sdi,
	&s3c_device_usbgadget,
	&s3c_device_nand,
	&gta02_nor_flash,
	&s3c24xx_pwm_device,
	&s3c_device_iis,
	&s3c_device_i2c0,
	&gta02_dfbmcs320_device,
	&gta02_buttons_device,
	&s3c_device_adc,
	&s3c_device_ts,
	&gta02_audio,
};

static void gta02_poweroff(void)
{
	pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
}

static void __init gta02_machine_init(void)
{
	/* Set the panic callback to turn AUX LED on or off. */
	panic_blink = gta02_panic_blink;

	s3c_pm_init();

#ifdef CONFIG_CHARGER_PCF50633
	INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
#endif

	s3c24xx_udc_set_platdata(&gta02_udc_cfg);
	s3c24xx_ts_set_platdata(&gta02_ts_info);
	s3c_ohci_set_platdata(&gta02_usb_info);
	s3c_nand_set_platdata(&gta02_nand_info);
	s3c_i2c0_set_platdata(NULL);

	i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));

	/* 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(&gta02_audio_gpio_table);
	gpiod_add_lookup_table(&gta02_mmc_gpio_table);
	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
	pm_power_off = gta02_poweroff;

	regulator_has_full_constraints();
}

static void __init gta02_init_time(void)
{
	s3c2442_init_clocks(12000000);
	s3c24xx_timer_init();
}

MACHINE_START(NEO1973_GTA02, "GTA02")
	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
	.atag_offset	= 0x100,
	.map_io		= gta02_map_io,
	.init_irq	= s3c2442_init_irq,
	.init_machine	= gta02_machine_init,
	.init_time	= gta02_init_time,
MACHINE_END
Commit	Line	Data
84b21701 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
	4	//
	5	// Copyright (C) 2006-2009 by Openmoko, Inc.
	6	// Authors: Harald Welte <laforge@openmoko.org>
	7	// Andy Green <andy@openmoko.org>
	8	// Werner Almesberger <werner@openmoko.org>
	9	// All rights reserved.
9d76295a AG	10
	11	#include <linux/kernel.h>
	12	#include <linux/types.h>
	13	#include <linux/interrupt.h>
	14	#include <linux/list.h>
	15	#include <linux/delay.h>
	16	#include <linux/timer.h>
	17	#include <linux/init.h>
e26a2abc	18	#include <linux/gpio/machine.h>
9d76295a	19	#include <linux/gpio.h>
b2ca7871	20	#include <linux/gpio_keys.h>
9d76295a AG	21	#include <linux/workqueue.h>
	22	#include <linux/platform_device.h>
	23	#include <linux/serial_core.h>
334a1c70	24	#include <linux/serial_s3c.h>
b2ca7871 KK	25	#include <linux/input.h>
	26	#include <linux/io.h>
	27	#include <linux/i2c.h>
9d76295a AG	28
	29	#include <linux/mmc/host.h>
	30
b2ca7871 KK	31	#include <linux/mfd/pcf50633/adc.h>
	32	#include <linux/mfd/pcf50633/backlight.h>
	33	#include <linux/mfd/pcf50633/core.h>
	34	#include <linux/mfd/pcf50633/gpio.h>
	35	#include <linux/mfd/pcf50633/mbc.h>
	36	#include <linux/mfd/pcf50633/pmic.h>
	37
9d76295a	38	#include <linux/mtd/mtd.h>
d4092d76	39	#include <linux/mtd/rawnand.h>
e5acf9c8	40	#include <linux/mtd/nand-ecc-sw-hamming.h>
9d76295a AG	41	#include <linux/mtd/partitions.h>
9d76295a AG	42	#include <linux/mtd/physmap.h>
9d76295a	43
9d76295a AG	44	#include <linux/regulator/machine.h>
9d76295a AG	45
b2ca7871 KK	46	#include <linux/spi/spi.h>
b2ca7871 KK	47	#include <linux/spi/s3c24xx.h>
003ddede	48
b2ca7871 KK	49	#include <asm/irq.h>
b2ca7871 KK	50	#include <asm/mach-types.h>
9d76295a AG	51	#include <asm/mach/arch.h>
	52	#include <asm/mach/map.h>
	53	#include <asm/mach/irq.h>
	54
b2ca7871 KK	55	#include <linux/platform_data/i2c-s3c2410.h>
	56	#include <linux/platform_data/mtd-nand-s3c2410.h>
	57	#include <linux/platform_data/touchscreen-s3c2410.h>
	58	#include <linux/platform_data/usb-ohci-s3c2410.h>
	59	#include <linux/platform_data/usb-s3c2410_udc.h>
81994e0f	60	#include <linux/platform_data/fb-s3c2410.h>
9d76295a	61
c6ff132d AB	62	#include "regs-gpio.h"
	63	#include "regs-irq.h"
	64	#include "gpio-samsung.h"
9d76295a	65
c6ff132d AB	66	#include "cpu.h"
	67	#include "devs.h"
	68	#include "gpio-cfg.h"
	69	#include "pm.h"
d73af183	70
71b9114d	71	#include "s3c24xx.h"
b2ca7871	72	#include "gta02.h"
9d76295a AG	73
	74	static struct pcf50633 *gta02_pcf;
	75
	76	/*
c7ff0d9c	77	* This gets called frequently when we paniced.
9d76295a AG	78	*/
9d76295a AG	79
c7ff0d9c	80	static long gta02_panic_blink(int state)
9d76295a	81	{
c7ff0d9c	82	char led;
9d76295a	83
c7ff0d9c	84	led = (state) ? 1 : 0;
9d76295a AG	85	gpio_direction_output(GTA02_GPIO_AUX_LED, led);
9d76295a AG	86
9664efeb	87	return 0;
9d76295a AG	88	}
	89
	90
	91	static struct map_desc gta02_iodesc[] __initdata = {
	92	{
	93	.virtual = 0xe0000000,
	94	.pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
	95	.length = SZ_1M,
	96	.type = MT_DEVICE
	97	},
	98	};
	99
	100	#define UCON (S3C2410_UCON_DEFAULT \| S3C2443_UCON_RXERR_IRQEN)
	101	#define ULCON (S3C2410_LCON_CS8 \| S3C2410_LCON_PNONE \| S3C2410_LCON_STOPB)
	102	#define UFCON (S3C2410_UFCON_RXTRIG8 \| S3C2410_UFCON_FIFOMODE)
	103
	104	static struct s3c2410_uartcfg gta02_uartcfgs[] = {
	105	[0] = {
	106	.hwport = 0,
	107	.flags = 0,
	108	.ucon = UCON,
	109	.ulcon = ULCON,
	110	.ufcon = UFCON,
	111	},
	112	[1] = {
	113	.hwport = 1,
	114	.flags = 0,
	115	.ucon = UCON,
	116	.ulcon = ULCON,
	117	.ufcon = UFCON,
	118	},
	119	[2] = {
	120	.hwport = 2,
	121	.flags = 0,
	122	.ucon = UCON,
	123	.ulcon = ULCON,
	124	.ufcon = UFCON,
	125	},
	126	};
	127
	128	#ifdef CONFIG_CHARGER_PCF50633
	129	/*
	130	* On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
	131	* We use this to recognize that we can pull 1A from the USB socket.
	132	*
	133	* These constants are the measured pcf50633 ADC levels with the 1A
	134	* charger / 48K resistor, and with no pulldown resistor.
	135	*/
	136
	137	#define ADC_NOM_CHG_DETECT_1A 6
	138	#define ADC_NOM_CHG_DETECT_USB 43
	139
8db9a202	140	#ifdef CONFIG_PCF50633_ADC
9d76295a AG	141	static void
	142	gta02_configure_pmu_for_charger(struct pcf50633 pcf, void unused, int res)
	143	{
	144	int ma;
	145
	146	/* Interpret charger type */
	147	if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
	148
	149	/*
	150	* Sanity - stop GPO driving out now that we have a 1A charger
	151	* GPO controls USB Host power generation on GTA02
	152	*/
	153	pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
	154
	155	ma = 1000;
	156	} else
	157	ma = 100;
	158
	159	pcf50633_mbc_usb_curlim_set(pcf, ma);
	160	}
8db9a202	161	#endif
9d76295a AG	162
	163	static struct delayed_work gta02_charger_work;
	164	static int gta02_usb_vbus_draw;
	165
	166	static void gta02_charger_worker(struct work_struct *work)
	167	{
	168	if (gta02_usb_vbus_draw) {
	169	pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
	170	return;
	171	}
	172
	173	#ifdef CONFIG_PCF50633_ADC
	174	pcf50633_adc_async_read(gta02_pcf,
	175	PCF50633_ADCC1_MUX_ADCIN1,
	176	PCF50633_ADCC1_AVERAGE_16,
	177	gta02_configure_pmu_for_charger,
	178	NULL);
	179	#else
	180	/*
	181	* If the PCF50633 ADC is disabled we fallback to a
	182	* 100mA limit for safety.
	183	*/
645e27b0	184	pcf50633_mbc_usb_curlim_set(gta02_pcf, 100);
9d76295a AG	185	#endif
	186	}
	187
	188	#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
	189
	190	static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
	191	{
	192	if (irq == PCF50633_IRQ_USBINS) {
	193	schedule_delayed_work(&gta02_charger_work,
	194	GTA02_CHARGER_CONFIGURE_TIMEOUT);
	195
	196	return;
	197	}
	198
	199	if (irq == PCF50633_IRQ_USBREM) {
	200	cancel_delayed_work_sync(&gta02_charger_work);
	201	gta02_usb_vbus_draw = 0;
	202	}
	203	}
	204
	205	static void gta02_udc_vbus_draw(unsigned int ma)
	206	{
	207	if (!gta02_pcf)
	208	return;
	209
	210	gta02_usb_vbus_draw = ma;
	211
	212	schedule_delayed_work(&gta02_charger_work,
	213	GTA02_CHARGER_CONFIGURE_TIMEOUT);
	214	}
	215	#else /* !CONFIG_CHARGER_PCF50633 */
	216	#define gta02_pmu_event_callback NULL
	217	#define gta02_udc_vbus_draw NULL
	218	#endif
	219
9d76295a AG	220	static char *gta02_batteries[] = {
	221	"battery",
	222	};
	223
67e67df8 LPC	224	static struct pcf50633_bl_platform_data gta02_backlight_data = {
	225	.default_brightness = 0x3f,
	226	.default_brightness_limit = 0,
	227	.ramp_time = 5,
	228	};
	229
4cfb7b7c	230	static struct pcf50633_platform_data gta02_pcf_pdata = {
9d76295a AG	231	.resumers = {
	232	[0] = PCF50633_INT1_USBINS \|
	233	PCF50633_INT1_USBREM \|
	234	PCF50633_INT1_ALARM,
	235	[1] = PCF50633_INT2_ONKEYF,
	236	[2] = PCF50633_INT3_ONKEY1S,
	237	[3] = PCF50633_INT4_LOWSYS \|
	238	PCF50633_INT4_LOWBAT \|
	239	PCF50633_INT4_HIGHTMP,
	240	},
	241
	242	.batteries = gta02_batteries,
	243	.num_batteries = ARRAY_SIZE(gta02_batteries),
2f745dde LPC	244
	245	.charger_reference_current_ma = 1000,
	246
67e67df8 LPC	247	.backlight_data = &gta02_backlight_data,
67e67df8 LPC	248
9d76295a AG	249	.reg_init_data = {
	250	[PCF50633_REGULATOR_AUTO] = {
	251	.constraints = {
	252	.min_uV = 3300000,
	253	.max_uV = 3300000,
	254	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	255	.always_on = 1,
	256	.apply_uV = 1,
9d76295a AG	257	},
	258	},
	259	[PCF50633_REGULATOR_DOWN1] = {
	260	.constraints = {
	261	.min_uV = 1300000,
	262	.max_uV = 1600000,
	263	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	264	.always_on = 1,
	265	.apply_uV = 1,
	266	},
	267	},
	268	[PCF50633_REGULATOR_DOWN2] = {
	269	.constraints = {
	270	.min_uV = 1800000,
	271	.max_uV = 1800000,
	272	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	273	.apply_uV = 1,
	274	.always_on = 1,
9d76295a AG	275	},
	276	},
	277	[PCF50633_REGULATOR_HCLDO] = {
	278	.constraints = {
	279	.min_uV = 2000000,
	280	.max_uV = 3300000,
	281	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440 LPC	282	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
7cda3440 LPC	283	REGULATOR_CHANGE_STATUS,
9d76295a AG	284	},
	285	},
	286	[PCF50633_REGULATOR_LDO1] = {
	287	.constraints = {
	288	.min_uV = 3300000,
	289	.max_uV = 3300000,
	290	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	291	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a	292	.apply_uV = 1,
9d76295a AG	293	},
	294	},
	295	[PCF50633_REGULATOR_LDO2] = {
	296	.constraints = {
	297	.min_uV = 3300000,
	298	.max_uV = 3300000,
	299	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	300	.apply_uV = 1,
	301	},
	302	},
	303	[PCF50633_REGULATOR_LDO3] = {
	304	.constraints = {
	305	.min_uV = 3000000,
	306	.max_uV = 3000000,
	307	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	308	.apply_uV = 1,
	309	},
	310	},
	311	[PCF50633_REGULATOR_LDO4] = {
	312	.constraints = {
	313	.min_uV = 3200000,
	314	.max_uV = 3200000,
	315	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	316	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a AG	317	.apply_uV = 1,
	318	},
	319	},
	320	[PCF50633_REGULATOR_LDO5] = {
	321	.constraints = {
	322	.min_uV = 3000000,
	323	.max_uV = 3000000,
	324	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	325	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a	326	.apply_uV = 1,
9d76295a AG	327	},
	328	},
	329	[PCF50633_REGULATOR_LDO6] = {
	330	.constraints = {
	331	.min_uV = 3000000,
	332	.max_uV = 3000000,
	333	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	334	},
	335	},
	336	[PCF50633_REGULATOR_MEMLDO] = {
	337	.constraints = {
	338	.min_uV = 1800000,
	339	.max_uV = 1800000,
	340	.valid_modes_mask = REGULATOR_MODE_NORMAL,
9d76295a AG	341	},
	342	},
	343
	344	},
9d76295a AG	345	.mbc_event_callback = gta02_pmu_event_callback,
	346	};
	347
	348
	349	/* NOR Flash. */
	350
	351	#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */
	352	#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */
	353
	354	static struct physmap_flash_data gta02_nor_flash_data = {
	355	.width = 2,
	356	};
	357
1c2bf1d3 TB	358	static struct resource gta02_nor_flash_resource =
1c2bf1d3 TB	359	DEFINE_RES_MEM(GTA02_FLASH_BASE, GTA02_FLASH_SIZE);
9d76295a AG	360
	361	static struct platform_device gta02_nor_flash = {
	362	.name = "physmap-flash",
	363	.id = 0,
	364	.dev = {
	365	.platform_data = &gta02_nor_flash_data,
	366	},
	367	.resource = &gta02_nor_flash_resource,
	368	.num_resources = 1,
	369	};
	370
	371
4cfb7b7c	372	static struct platform_device s3c24xx_pwm_device = {
9d76295a AG	373	.name = "s3c24xx_pwm",
	374	.num_resources = 0,
	375	};
	376
6caa15d0 LPC	377	static struct platform_device gta02_dfbmcs320_device = {
	378	.name = "dfbmcs320",
	379	};
	380
9d76295a AG	381	static struct i2c_board_info gta02_i2c_devs[] __initdata = {
	382	{
	383	I2C_BOARD_INFO("pcf50633", 0x73),
	384	.irq = GTA02_IRQ_PCF50633,
	385	.platform_data = &gta02_pcf_pdata,
	386	},
	387	{
	388	I2C_BOARD_INFO("wm8753", 0x1a),
	389	},
	390	};
	391
2a3a1804	392	static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
9d76295a AG	393	[0] = {
	394	/*
	395	* This name is also hard-coded in the boot loaders, so
	396	* changing it would would require all users to upgrade
	397	* their boot loaders, some of which are stored in a NOR
	398	* that is considered to be immutable.
	399	*/
	400	.name = "neo1973-nand",
	401	.nr_chips = 1,
76609a69	402	.flash_bbt = 1,
9d76295a AG	403	},
	404	};
	405
	406	/*
	407	* Choose a set of timings derived from S3C@2442B MCP54
	408	* data sheet (K5D2G13ACM-D075 MCP Memory).
	409	*/
	410
2a3a1804	411	static struct s3c2410_platform_nand __initdata gta02_nand_info = {
9d76295a AG	412	.tacls = 0,
	413	.twrph0 = 25,
	414	.twrph1 = 15,
	415	.nr_sets = ARRAY_SIZE(gta02_nand_sets),
	416	.sets = gta02_nand_sets,
bace41f8	417	.engine_type = NAND_ECC_ENGINE_TYPE_SOFT,
9d76295a AG	418	};
	419
	420
9d76295a	421	/* Get PMU to set USB current limit accordingly. */
e27c3c5c	422	static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = {
9d76295a	423	.vbus_draw = gta02_udc_vbus_draw,
e27c3c5c	424	.pullup_pin = GTA02_GPIO_USB_PULLUP,
9d76295a AG	425	};
9d76295a AG	426
9d76295a	427	/* USB */
f1267520	428	static struct s3c2410_hcd_info gta02_usb_info __initdata = {
9d76295a AG	429	.port[0] = {
	430	.flags = S3C_HCDFLG_USED,
	431	},
	432	.port[1] = {
	433	.flags = 0,
	434	},
	435	};
	436
d73af183 LPC	437	/* Touchscreen */
	438	static struct s3c2410_ts_mach_info gta02_ts_info = {
	439	.delay = 10000,
	440	.presc = 0xff, /* slow as we can go */
	441	.oversampling_shift = 2,
	442	};
	443
003ddede LPC	444	/* Buttons */
	445	static struct gpio_keys_button gta02_buttons[] = {
	446	{
	447	.gpio = GTA02_GPIO_AUX_KEY,
	448	.code = KEY_PHONE,
	449	.desc = "Aux",
	450	.type = EV_KEY,
	451	.debounce_interval = 100,
	452	},
	453	{
	454	.gpio = GTA02_GPIO_HOLD_KEY,
	455	.code = KEY_PAUSE,
	456	.desc = "Hold",
	457	.type = EV_KEY,
	458	.debounce_interval = 100,
	459	},
	460	};
	461
	462	static struct gpio_keys_platform_data gta02_buttons_pdata = {
	463	.buttons = gta02_buttons,
	464	.nbuttons = ARRAY_SIZE(gta02_buttons),
	465	};
	466
	467	static struct platform_device gta02_buttons_device = {
	468	.name = "gpio-keys",
	469	.id = -1,
	470	.dev = {
	471	.platform_data = &gta02_buttons_pdata,
	472	},
	473	};
9d76295a	474
e26a2abc AB	475	static struct gpiod_lookup_table gta02_audio_gpio_table = {
	476	.dev_id = "neo1973-audio",
	477	.table = {
	478	GPIO_LOOKUP("GPIOJ", 2, "amp-shut", GPIO_ACTIVE_HIGH),
	479	GPIO_LOOKUP("GPIOJ", 1, "hp", GPIO_ACTIVE_HIGH),
	480	{ },
	481	},
	482	};
	483
	484	static struct platform_device gta02_audio = {
	485	.name = "neo1973-audio",
	486	.id = -1,
	487	};
	488
f67f6c00 AB	489	static struct gpiod_lookup_table gta02_mmc_gpio_table = {
	490	.dev_id = "s3c2410-sdi",
	491	.table = {
	492	/* bus pins */
	493	GPIO_LOOKUP_IDX("GPIOE", 5, "bus", 0, GPIO_ACTIVE_HIGH),
	494	GPIO_LOOKUP_IDX("GPIOE", 6, "bus", 1, GPIO_ACTIVE_HIGH),
	495	GPIO_LOOKUP_IDX("GPIOE", 7, "bus", 2, GPIO_ACTIVE_HIGH),
	496	GPIO_LOOKUP_IDX("GPIOE", 8, "bus", 3, GPIO_ACTIVE_HIGH),
	497	GPIO_LOOKUP_IDX("GPIOE", 9, "bus", 4, GPIO_ACTIVE_HIGH),
	498	GPIO_LOOKUP_IDX("GPIOE", 10, "bus", 5, GPIO_ACTIVE_HIGH),
	499	{ },
	500	},
	501	};
	502
9d76295a AG	503	static void __init gta02_map_io(void)
	504	{
	505	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
9d76295a	506	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
a1342f6a	507	s3c24xx_set_timer_source(S3C24XX_PWM3, S3C24XX_PWM4);
9d76295a AG	508	}
	509
	510
	511	/* These are the guys that don't need to be children of PMU. */
	512
	513	static struct platform_device *gta02_devices[] __initdata = {
b813248c	514	&s3c_device_ohci,
9d76295a AG	515	&s3c_device_wdt,
	516	&s3c_device_sdi,
	517	&s3c_device_usbgadget,
	518	&s3c_device_nand,
	519	&gta02_nor_flash,
	520	&s3c24xx_pwm_device,
	521	&s3c_device_iis,
	522	&s3c_device_i2c0,
6caa15d0	523	&gta02_dfbmcs320_device,
003ddede	524	&gta02_buttons_device,
d73af183 LPC	525	&s3c_device_adc,
d73af183 LPC	526	&s3c_device_ts,
e26a2abc	527	&gta02_audio,
9d76295a AG	528	};
9d76295a AG	529
9d76295a AG	530	static void gta02_poweroff(void)
	531	{
	532	pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
	533	}
	534
	535	static void __init gta02_machine_init(void)
	536	{
c7ff0d9c	537	/* Set the panic callback to turn AUX LED on or off. */
9d76295a AG	538	panic_blink = gta02_panic_blink;
	539
	540	s3c_pm_init();
	541
	542	#ifdef CONFIG_CHARGER_PCF50633
	543	INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
	544	#endif
	545
9d76295a	546	s3c24xx_udc_set_platdata(&gta02_udc_cfg);
d73af183	547	s3c24xx_ts_set_platdata(&gta02_ts_info);
f1267520	548	s3c_ohci_set_platdata(&gta02_usb_info);
2a3a1804	549	s3c_nand_set_platdata(&gta02_nand_info);
9d76295a AG	550	s3c_i2c0_set_platdata(NULL);
	551
	552	i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
	553
673085f4 AB	554	/* Configure the I2S pins (GPE0...GPE4) in correct mode */
	555	s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
	556	S3C_GPIO_PULL_NONE);
	557
e26a2abc	558	gpiod_add_lookup_table(&gta02_audio_gpio_table);
f67f6c00	559	gpiod_add_lookup_table(&gta02_mmc_gpio_table);
9d76295a AG	560	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
9d76295a AG	561	pm_power_off = gta02_poweroff;
3c861b88 LPC	562
3c861b88 LPC	563	regulator_has_full_constraints();
9d76295a AG	564	}
9d76295a AG	565
a28d618e HS	566	static void __init gta02_init_time(void)
	567	{
	568	s3c2442_init_clocks(12000000);
a1342f6a	569	s3c24xx_timer_init();
a28d618e	570	}
9d76295a AG	571
	572	MACHINE_START(NEO1973_GTA02, "GTA02")
	573	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
69d50710	574	.atag_offset = 0x100,
9d76295a	575	.map_io = gta02_map_io,
ce6c164b	576	.init_irq = s3c2442_init_irq,
9d76295a	577	.init_machine = gta02_machine_init,
a28d618e	578	.init_time = gta02_init_time,
9d76295a	579	MACHINE_END