[deliverable/linux.git] / arch / arm / mach-s3c2440 / mach-gta02.c

/*
 * linux/arch/arm/mach-s3c2442/mach-gta02.c
 *
 * 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.
 *
 * 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 program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * 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., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#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.h>
#include <linux/workqueue.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/spi/spi.h>

#include <linux/mmc/host.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>

#include <linux/i2c.h>
#include <linux/regulator/machine.h>

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

#include <linux/input.h>
#include <linux/gpio_keys.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 <mach/regs-irq.h>
#include <mach/regs-gpio.h>
#include <mach/regs-gpioj.h>
#include <mach/fb.h>

#include <mach/spi.h>
#include <mach/spi-gpio.h>
#include <plat/usb-control.h>
#include <mach/regs-mem.h>
#include <mach/hardware.h>

#include <mach/gta02.h>

#include <plat/regs-serial.h>
#include <plat/nand.h>
#include <plat/devs.h>
#include <plat/cpu.h>
#include <plat/pm.h>
#include <plat/udc.h>
#include <plat/gpio-cfg.h>
#include <plat/iic.h>
#include <plat/ts.h>


static struct pcf50633 *gta02_pcf;

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

static long gta02_panic_blink(int state)
{
	long delay = 0;
	char led;

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

	return delay;
}


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

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);
}

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(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

/*
 * This is called when pc50633 is probed, unfortunately quite late in the
 * day since it is an I2C bus device. Here we can belatedly define some
 * platform devices with the advantage that we can mark the pcf50633 as the
 * parent. This makes them get suspended and resumed with their parent
 * the pcf50633 still around.
 */

static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);


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

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

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,
			},
		},

	},
	.probe_done = gta02_pmu_attach_child_devices,
	.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 = {
	.start		= GTA02_FLASH_BASE,
	.end		= GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
	.flags		= IORESOURCE_MEM,
};

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,
};


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

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,
};


/* 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 void __init gta02_map_io(void)
{
	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
	s3c24xx_init_clocks(12000000);
	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
}


/* 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,
	&samsung_asoc_dma,
	&s3c_device_i2c0,
	&gta02_buttons_device,
	&s3c_device_adc,
	&s3c_device_ts,
};

/* These guys DO need to be children of PMU. */

static struct platform_device *gta02_devices_pmu_children[] = {
};


/*
 * This is called when pc50633 is probed, quite late in the day since it is an
 * I2C bus device.  Here we can define platform devices with the advantage that
 * we can mark the pcf50633 as the parent.  This makes them get suspended and
 * resumed with their parent the pcf50633 still around.  All devices whose
 * operation depends on something from pcf50633 must have this relationship
 * made explicit like this, or suspend and resume will become an unreliable
 * hellworld.
 */

static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
{
	int n;

	/* Grab a copy of the now probed PMU pointer. */
	gta02_pcf = pcf;

	for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
		gta02_devices_pmu_children[n]->dev.parent = pcf->dev;

	platform_add_devices(gta02_devices_pmu_children,
			     ARRAY_SIZE(gta02_devices_pmu_children));
}

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));

	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
	pm_power_off = gta02_poweroff;

	regulator_has_full_constraints();
}


MACHINE_START(NEO1973_GTA02, "GTA02")
	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
	.boot_params	= S3C2410_SDRAM_PA + 0x100,
	.map_io		= gta02_map_io,
	.init_irq	= s3c24xx_init_irq,
	.init_machine	= gta02_machine_init,
	.timer		= &s3c24xx_timer,
MACHINE_END
Commit	Line	Data
9d76295a AG	1	/*
	2	* linux/arch/arm/mach-s3c2442/mach-gta02.c
	3	*
	4	* S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
	5	*
	6	* Copyright (C) 2006-2009 by Openmoko, Inc.
	7	* Authors: Harald Welte <laforge@openmoko.org>
	8	* Andy Green <andy@openmoko.org>
	9	* Werner Almesberger <werner@openmoko.org>
	10	* All rights reserved.
	11	*
	12	* This program is free software; you can redistribute it and/or
	13	* modify it under the terms of the GNU General Public License as
	14	* published by the Free Software Foundation; either version 2 of
	15	* the License, or (at your option) any later version.
	16	*
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
	21	*
	22	* You should have received a copy of the GNU General Public License
	23	* along with this program; if not, write to the Free Software
	24	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	25	* MA 02111-1307 USA
	26	*
	27	*/
	28
	29	#include <linux/kernel.h>
	30	#include <linux/types.h>
	31	#include <linux/interrupt.h>
	32	#include <linux/list.h>
	33	#include <linux/delay.h>
	34	#include <linux/timer.h>
	35	#include <linux/init.h>
	36	#include <linux/gpio.h>
	37	#include <linux/workqueue.h>
	38	#include <linux/platform_device.h>
	39	#include <linux/serial_core.h>
	40	#include <linux/spi/spi.h>
	41
	42	#include <linux/mmc/host.h>
	43
	44	#include <linux/mtd/mtd.h>
	45	#include <linux/mtd/nand.h>
	46	#include <linux/mtd/nand_ecc.h>
	47	#include <linux/mtd/partitions.h>
	48	#include <linux/mtd/physmap.h>
	49	#include <linux/io.h>
	50
	51	#include <linux/i2c.h>
9d76295a AG	52	#include <linux/regulator/machine.h>
	53
	54	#include <linux/mfd/pcf50633/core.h>
	55	#include <linux/mfd/pcf50633/mbc.h>
	56	#include <linux/mfd/pcf50633/adc.h>
	57	#include <linux/mfd/pcf50633/gpio.h>
	58	#include <linux/mfd/pcf50633/pmic.h>
67e67df8	59	#include <linux/mfd/pcf50633/backlight.h>
9d76295a	60
003ddede LPC	61	#include <linux/input.h>
	62	#include <linux/gpio_keys.h>
	63
9d76295a AG	64	#include <asm/mach/arch.h>
	65	#include <asm/mach/map.h>
	66	#include <asm/mach/irq.h>
	67
	68	#include <asm/irq.h>
	69	#include <asm/mach-types.h>
	70
	71	#include <mach/regs-irq.h>
	72	#include <mach/regs-gpio.h>
	73	#include <mach/regs-gpioj.h>
	74	#include <mach/fb.h>
	75
	76	#include <mach/spi.h>
	77	#include <mach/spi-gpio.h>
	78	#include <plat/usb-control.h>
	79	#include <mach/regs-mem.h>
	80	#include <mach/hardware.h>
	81
	82	#include <mach/gta02.h>
	83
	84	#include <plat/regs-serial.h>
	85	#include <plat/nand.h>
	86	#include <plat/devs.h>
	87	#include <plat/cpu.h>
	88	#include <plat/pm.h>
	89	#include <plat/udc.h>
	90	#include <plat/gpio-cfg.h>
	91	#include <plat/iic.h>
d73af183 LPC	92	#include <plat/ts.h>
d73af183 LPC	93
9d76295a AG	94
	95	static struct pcf50633 *gta02_pcf;
	96
	97	/*
c7ff0d9c	98	* This gets called frequently when we paniced.
9d76295a AG	99	*/
9d76295a AG	100
c7ff0d9c	101	static long gta02_panic_blink(int state)
9d76295a AG	102	{
9d76295a AG	103	long delay = 0;
c7ff0d9c	104	char led;
9d76295a	105
c7ff0d9c	106	led = (state) ? 1 : 0;
9d76295a AG	107	gpio_direction_output(GTA02_GPIO_AUX_LED, led);
9d76295a AG	108
9d76295a AG	109	return delay;
	110	}
	111
	112
	113	static struct map_desc gta02_iodesc[] __initdata = {
	114	{
	115	.virtual = 0xe0000000,
	116	.pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
	117	.length = SZ_1M,
	118	.type = MT_DEVICE
	119	},
	120	};
	121
	122	#define UCON (S3C2410_UCON_DEFAULT \| S3C2443_UCON_RXERR_IRQEN)
	123	#define ULCON (S3C2410_LCON_CS8 \| S3C2410_LCON_PNONE \| S3C2410_LCON_STOPB)
	124	#define UFCON (S3C2410_UFCON_RXTRIG8 \| S3C2410_UFCON_FIFOMODE)
	125
	126	static struct s3c2410_uartcfg gta02_uartcfgs[] = {
	127	[0] = {
	128	.hwport = 0,
	129	.flags = 0,
	130	.ucon = UCON,
	131	.ulcon = ULCON,
	132	.ufcon = UFCON,
	133	},
	134	[1] = {
	135	.hwport = 1,
	136	.flags = 0,
	137	.ucon = UCON,
	138	.ulcon = ULCON,
	139	.ufcon = UFCON,
	140	},
	141	[2] = {
	142	.hwport = 2,
	143	.flags = 0,
	144	.ucon = UCON,
	145	.ulcon = ULCON,
	146	.ufcon = UFCON,
	147	},
	148	};
	149
	150	#ifdef CONFIG_CHARGER_PCF50633
	151	/*
	152	* On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
	153	* We use this to recognize that we can pull 1A from the USB socket.
	154	*
	155	* These constants are the measured pcf50633 ADC levels with the 1A
	156	* charger / 48K resistor, and with no pulldown resistor.
	157	*/
	158
	159	#define ADC_NOM_CHG_DETECT_1A 6
	160	#define ADC_NOM_CHG_DETECT_USB 43
	161
	162	static void
	163	gta02_configure_pmu_for_charger(struct pcf50633 pcf, void unused, int res)
	164	{
	165	int ma;
	166
	167	/* Interpret charger type */
	168	if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
	169
	170	/*
	171	* Sanity - stop GPO driving out now that we have a 1A charger
	172	* GPO controls USB Host power generation on GTA02
173	*/
174	pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
175
176	ma = 1000;
177	} else
178	ma = 100;
179
180	pcf50633_mbc_usb_curlim_set(pcf, ma);
181	}
182
183	static struct delayed_work gta02_charger_work;
184	static int gta02_usb_vbus_draw;
185
186	static void gta02_charger_worker(struct work_struct *work)
187	{
188	if (gta02_usb_vbus_draw) {
189	pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
190	return;
191	}
192
193	#ifdef CONFIG_PCF50633_ADC
194	pcf50633_adc_async_read(gta02_pcf,
195	PCF50633_ADCC1_MUX_ADCIN1,
196	PCF50633_ADCC1_AVERAGE_16,
197	gta02_configure_pmu_for_charger,
198	NULL);
199	#else
200	/*
201	* If the PCF50633 ADC is disabled we fallback to a
202	* 100mA limit for safety.
203	*/
204	pcf50633_mbc_usb_curlim_set(pcf, 100);
205	#endif
206	}
207
208	#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
209
210	static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
211	{
212	if (irq == PCF50633_IRQ_USBINS) {
213	schedule_delayed_work(&gta02_charger_work,
214	GTA02_CHARGER_CONFIGURE_TIMEOUT);
215
216	return;
217	}
218
219	if (irq == PCF50633_IRQ_USBREM) {
220	cancel_delayed_work_sync(&gta02_charger_work);
221	gta02_usb_vbus_draw = 0;
222	}
223	}
224
225	static void gta02_udc_vbus_draw(unsigned int ma)
226	{
227	if (!gta02_pcf)
228	return;
229
230	gta02_usb_vbus_draw = ma;
231
232	schedule_delayed_work(&gta02_charger_work,
233	GTA02_CHARGER_CONFIGURE_TIMEOUT);
234	}
235	#else /* !CONFIG_CHARGER_PCF50633 */
236	#define gta02_pmu_event_callback NULL
237	#define gta02_udc_vbus_draw NULL
238	#endif
239
240	/*
241	* This is called when pc50633 is probed, unfortunately quite late in the
242	* day since it is an I2C bus device. Here we can belatedly define some
243	* platform devices with the advantage that we can mark the pcf50633 as the
244	* parent. This makes them get suspended and resumed with their parent
245	* the pcf50633 still around.
246	*/
247
248	static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);
249
250
251	static char *gta02_batteries[] = {
252	"battery",
253	};
254
67e67df8 LPC	255	static struct pcf50633_bl_platform_data gta02_backlight_data = {
	256	.default_brightness = 0x3f,
	257	.default_brightness_limit = 0,
	258	.ramp_time = 5,
	259	};
	260
9d76295a AG	261	struct pcf50633_platform_data gta02_pcf_pdata = {
	262	.resumers = {
	263	[0] = PCF50633_INT1_USBINS \|
	264	PCF50633_INT1_USBREM \|
	265	PCF50633_INT1_ALARM,
	266	[1] = PCF50633_INT2_ONKEYF,
	267	[2] = PCF50633_INT3_ONKEY1S,
	268	[3] = PCF50633_INT4_LOWSYS \|
	269	PCF50633_INT4_LOWBAT \|
	270	PCF50633_INT4_HIGHTMP,
	271	},
	272
	273	.batteries = gta02_batteries,
	274	.num_batteries = ARRAY_SIZE(gta02_batteries),
2f745dde LPC	275
	276	.charger_reference_current_ma = 1000,
	277
67e67df8 LPC	278	.backlight_data = &gta02_backlight_data,
67e67df8 LPC	279
9d76295a AG	280	.reg_init_data = {
	281	[PCF50633_REGULATOR_AUTO] = {
	282	.constraints = {
	283	.min_uV = 3300000,
	284	.max_uV = 3300000,
	285	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	286	.always_on = 1,
	287	.apply_uV = 1,
9d76295a AG	288	},
	289	},
	290	[PCF50633_REGULATOR_DOWN1] = {
	291	.constraints = {
	292	.min_uV = 1300000,
	293	.max_uV = 1600000,
	294	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	295	.always_on = 1,
	296	.apply_uV = 1,
	297	},
	298	},
	299	[PCF50633_REGULATOR_DOWN2] = {
	300	.constraints = {
	301	.min_uV = 1800000,
	302	.max_uV = 1800000,
	303	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	304	.apply_uV = 1,
	305	.always_on = 1,
9d76295a AG	306	},
	307	},
	308	[PCF50633_REGULATOR_HCLDO] = {
	309	.constraints = {
	310	.min_uV = 2000000,
	311	.max_uV = 3300000,
	312	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440 LPC	313	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE \|
7cda3440 LPC	314	REGULATOR_CHANGE_STATUS,
9d76295a AG	315	},
	316	},
	317	[PCF50633_REGULATOR_LDO1] = {
	318	.constraints = {
	319	.min_uV = 3300000,
	320	.max_uV = 3300000,
	321	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	322	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a	323	.apply_uV = 1,
9d76295a AG	324	},
	325	},
	326	[PCF50633_REGULATOR_LDO2] = {
	327	.constraints = {
	328	.min_uV = 3300000,
	329	.max_uV = 3300000,
	330	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	331	.apply_uV = 1,
	332	},
	333	},
	334	[PCF50633_REGULATOR_LDO3] = {
	335	.constraints = {
	336	.min_uV = 3000000,
	337	.max_uV = 3000000,
	338	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	339	.apply_uV = 1,
	340	},
	341	},
	342	[PCF50633_REGULATOR_LDO4] = {
	343	.constraints = {
	344	.min_uV = 3200000,
	345	.max_uV = 3200000,
	346	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	347	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a AG	348	.apply_uV = 1,
	349	},
	350	},
	351	[PCF50633_REGULATOR_LDO5] = {
	352	.constraints = {
	353	.min_uV = 3000000,
	354	.max_uV = 3000000,
	355	.valid_modes_mask = REGULATOR_MODE_NORMAL,
7cda3440	356	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
9d76295a	357	.apply_uV = 1,
9d76295a AG	358	},
	359	},
	360	[PCF50633_REGULATOR_LDO6] = {
	361	.constraints = {
	362	.min_uV = 3000000,
	363	.max_uV = 3000000,
	364	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	365	},
	366	},
	367	[PCF50633_REGULATOR_MEMLDO] = {
	368	.constraints = {
	369	.min_uV = 1800000,
	370	.max_uV = 1800000,
	371	.valid_modes_mask = REGULATOR_MODE_NORMAL,
9d76295a AG	372	},
	373	},
	374
	375	},
	376	.probe_done = gta02_pmu_attach_child_devices,
	377	.mbc_event_callback = gta02_pmu_event_callback,
	378	};
	379
	380
	381	/* NOR Flash. */
	382
	383	#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */
	384	#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */
	385
	386	static struct physmap_flash_data gta02_nor_flash_data = {
	387	.width = 2,
	388	};
	389
	390	static struct resource gta02_nor_flash_resource = {
	391	.start = GTA02_FLASH_BASE,
	392	.end = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
	393	.flags = IORESOURCE_MEM,
	394	};
	395
	396	static struct platform_device gta02_nor_flash = {
	397	.name = "physmap-flash",
	398	.id = 0,
	399	.dev = {
	400	.platform_data = &gta02_nor_flash_data,
	401	},
	402	.resource = &gta02_nor_flash_resource,
	403	.num_resources = 1,
	404	};
	405
	406
	407	struct platform_device s3c24xx_pwm_device = {
	408	.name = "s3c24xx_pwm",
	409	.num_resources = 0,
	410	};
	411
	412	static struct i2c_board_info gta02_i2c_devs[] __initdata = {
	413	{
	414	I2C_BOARD_INFO("pcf50633", 0x73),
	415	.irq = GTA02_IRQ_PCF50633,
	416	.platform_data = &gta02_pcf_pdata,
	417	},
	418	{
	419	I2C_BOARD_INFO("wm8753", 0x1a),
	420	},
	421	};
	422
2a3a1804	423	static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
9d76295a AG	424	[0] = {
	425	/*
	426	* This name is also hard-coded in the boot loaders, so
	427	* changing it would would require all users to upgrade
	428	* their boot loaders, some of which are stored in a NOR
	429	* that is considered to be immutable.
	430	*/
	431	.name = "neo1973-nand",
	432	.nr_chips = 1,
76609a69	433	.flash_bbt = 1,
9d76295a AG	434	},
	435	};
	436
	437	/*
	438	* Choose a set of timings derived from S3C@2442B MCP54
	439	* data sheet (K5D2G13ACM-D075 MCP Memory).
	440	*/
	441
2a3a1804	442	static struct s3c2410_platform_nand __initdata gta02_nand_info = {
9d76295a AG	443	.tacls = 0,
	444	.twrph0 = 25,
	445	.twrph1 = 15,
	446	.nr_sets = ARRAY_SIZE(gta02_nand_sets),
	447	.sets = gta02_nand_sets,
	448	};
	449
	450
9d76295a	451	/* Get PMU to set USB current limit accordingly. */
e27c3c5c	452	static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = {
9d76295a	453	.vbus_draw = gta02_udc_vbus_draw,
e27c3c5c	454	.pullup_pin = GTA02_GPIO_USB_PULLUP,
9d76295a AG	455	};
9d76295a AG	456
9d76295a	457	/* USB */
f1267520	458	static struct s3c2410_hcd_info gta02_usb_info __initdata = {
9d76295a AG	459	.port[0] = {
	460	.flags = S3C_HCDFLG_USED,
	461	},
	462	.port[1] = {
	463	.flags = 0,
	464	},
	465	};
	466
d73af183 LPC	467	/* Touchscreen */
	468	static struct s3c2410_ts_mach_info gta02_ts_info = {
	469	.delay = 10000,
	470	.presc = 0xff, /* slow as we can go */
	471	.oversampling_shift = 2,
	472	};
	473
003ddede LPC	474	/* Buttons */
	475	static struct gpio_keys_button gta02_buttons[] = {
	476	{
	477	.gpio = GTA02_GPIO_AUX_KEY,
	478	.code = KEY_PHONE,
	479	.desc = "Aux",
	480	.type = EV_KEY,
	481	.debounce_interval = 100,
	482	},
	483	{
	484	.gpio = GTA02_GPIO_HOLD_KEY,
	485	.code = KEY_PAUSE,
	486	.desc = "Hold",
	487	.type = EV_KEY,
	488	.debounce_interval = 100,
	489	},
	490	};
	491
	492	static struct gpio_keys_platform_data gta02_buttons_pdata = {
	493	.buttons = gta02_buttons,
	494	.nbuttons = ARRAY_SIZE(gta02_buttons),
	495	};
	496
	497	static struct platform_device gta02_buttons_device = {
	498	.name = "gpio-keys",
	499	.id = -1,
	500	.dev = {
	501	.platform_data = &gta02_buttons_pdata,
	502	},
	503	};
9d76295a AG	504
	505	static void __init gta02_map_io(void)
	506	{
	507	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
	508	s3c24xx_init_clocks(12000000);
	509	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
	510	}
	511
	512
	513	/* These are the guys that don't need to be children of PMU. */
	514
	515	static struct platform_device *gta02_devices[] __initdata = {
b813248c	516	&s3c_device_ohci,
9d76295a AG	517	&s3c_device_wdt,
	518	&s3c_device_sdi,
	519	&s3c_device_usbgadget,
	520	&s3c_device_nand,
	521	&gta02_nor_flash,
	522	&s3c24xx_pwm_device,
	523	&s3c_device_iis,
afbb1edc	524	&samsung_asoc_dma,
9d76295a	525	&s3c_device_i2c0,
003ddede	526	&gta02_buttons_device,
d73af183 LPC	527	&s3c_device_adc,
d73af183 LPC	528	&s3c_device_ts,
9d76295a AG	529	};
	530
	531	/* These guys DO need to be children of PMU. */
	532
	533	static struct platform_device *gta02_devices_pmu_children[] = {
9d76295a AG	534	};
	535
	536
	537	/*
	538	* This is called when pc50633 is probed, quite late in the day since it is an
	539	* I2C bus device. Here we can define platform devices with the advantage that
	540	* we can mark the pcf50633 as the parent. This makes them get suspended and
	541	* resumed with their parent the pcf50633 still around. All devices whose
	542	* operation depends on something from pcf50633 must have this relationship
	543	* made explicit like this, or suspend and resume will become an unreliable
	544	* hellworld.
	545	*/
	546
	547	static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
	548	{
	549	int n;
	550
	551	/* Grab a copy of the now probed PMU pointer. */
	552	gta02_pcf = pcf;
	553
	554	for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
	555	gta02_devices_pmu_children[n]->dev.parent = pcf->dev;
	556
	557	platform_add_devices(gta02_devices_pmu_children,
	558	ARRAY_SIZE(gta02_devices_pmu_children));
	559	}
	560
	561	static void gta02_poweroff(void)
	562	{
	563	pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
	564	}
	565
	566	static void __init gta02_machine_init(void)
	567	{
c7ff0d9c	568	/* Set the panic callback to turn AUX LED on or off. */
9d76295a AG	569	panic_blink = gta02_panic_blink;
	570
	571	s3c_pm_init();
	572
	573	#ifdef CONFIG_CHARGER_PCF50633
	574	INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
	575	#endif
	576
9d76295a	577	s3c24xx_udc_set_platdata(&gta02_udc_cfg);
d73af183	578	s3c24xx_ts_set_platdata(&gta02_ts_info);
f1267520	579	s3c_ohci_set_platdata(&gta02_usb_info);
2a3a1804	580	s3c_nand_set_platdata(&gta02_nand_info);
9d76295a AG	581	s3c_i2c0_set_platdata(NULL);
	582
	583	i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
	584
	585	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
	586	pm_power_off = gta02_poweroff;
3c861b88 LPC	587
3c861b88 LPC	588	regulator_has_full_constraints();
9d76295a AG	589	}
	590
	591
	592	MACHINE_START(NEO1973_GTA02, "GTA02")
	593	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
9d76295a AG	594	.boot_params = S3C2410_SDRAM_PA + 0x100,
	595	.map_io = gta02_map_io,
	596	.init_irq = s3c24xx_init_irq,
	597	.init_machine = gta02_machine_init,
	598	.timer = &s3c24xx_timer,
	599	MACHINE_END