[linux-2.6-block.git] / arch / arm / mach-s3c2442 / 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/backlight.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 <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>

static struct pcf50633 *gta02_pcf;

/*
 * This gets called every 1ms when we paniced.
 */

static long gta02_panic_blink(long count)
{
	long delay = 0;
	static long last_blink;
	static char led;

	/* Fast blink: 200ms period. */
	if (count - last_blink < 100)
		return 0;

	led ^= 1;
	gpio_direction_output(GTA02_GPIO_AUX_LED, led);

	last_blink = count;

	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",
};

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,

	.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,
				.state_mem = {
					.enabled = 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,
				.state_mem = {
					.enabled = 1,
				},
			},
		},
		[PCF50633_REGULATOR_HCLDO] = {
			.constraints = {
				.min_uV = 2000000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
				.always_on = 1,
			},
		},
		[PCF50633_REGULATOR_LDO1] = {
			.constraints = {
				.min_uV = 3300000,
				.max_uV = 3300000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.apply_uV = 1,
				.state_mem = {
					.enabled = 0,
				},
			},
		},
		[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,
				.apply_uV = 1,
			},
		},
		[PCF50633_REGULATOR_LDO5] = {
			.constraints = {
				.min_uV = 3000000,
				.max_uV = 3000000,
				.valid_modes_mask = REGULATOR_MODE_NORMAL,
				.apply_uV = 1,
				.state_mem = {
					.enabled = 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,
				.state_mem = {
					.enabled = 1,
				},
			},
		},

	},
	.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,
};


static void gta02_udc_command(enum s3c2410_udc_cmd_e cmd)
{
	switch (cmd) {
	case S3C2410_UDC_P_ENABLE:
		pr_debug("%s S3C2410_UDC_P_ENABLE\n", __func__);
		gpio_direction_output(GTA02_GPIO_USB_PULLUP, 1);
		break;
	case S3C2410_UDC_P_DISABLE:
		pr_debug("%s S3C2410_UDC_P_DISABLE\n", __func__);
		gpio_direction_output(GTA02_GPIO_USB_PULLUP, 0);
		break;
	case S3C2410_UDC_P_RESET:
		pr_debug("%s S3C2410_UDC_P_RESET\n", __func__);
		/* FIXME: Do something here. */
	}
}

/* Get PMU to set USB current limit accordingly. */
static struct s3c2410_udc_mach_info gta02_udc_cfg = {
	.vbus_draw	= gta02_udc_vbus_draw,
	.udc_command	= gta02_udc_command,

};


static void gta02_bl_set_intensity(int intensity)
{
	struct pcf50633 *pcf = gta02_pcf;
	int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);

	/* We map 8-bit intensity to 6-bit intensity in hardware. */
	intensity >>= 2;

	/*
	 * This can happen during, eg, print of panic on blanked console,
	 * but we can't service i2c without interrupts active, so abort.
	 */
	if (in_atomic()) {
		printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
		return;
	}

	old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
	if (intensity == old_intensity)
		return;

	/* We can't do this anywhere else. */
	pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);

	if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
		old_intensity = 0;

	/*
	 * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
	 * if seen, you have to re-enable the LED unit.
	 */
	if (!intensity || !old_intensity)
		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);

	/* Illegal to set LEDOUT to 0. */
	if (!intensity)
		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
	else
		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
					  intensity);

	if (intensity)
		pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);

}

static struct generic_bl_info gta02_bl_info = {
	.name			= "gta02-bl",
	.max_intensity		= 0xff,
	.default_intensity	= 0xff,
	.set_bl_intensity	= gta02_bl_set_intensity,
};

static struct platform_device gta02_bl_dev = {
	.name			= "generic-bl",
	.id			= 1,
	.dev = {
		.platform_data = &gta02_bl_info,
	},
};


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


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,
	&s3c_device_i2c0,
};

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

static struct platform_device *gta02_devices_pmu_children[] = {
	&gta02_bl_dev,
};


/*
 * 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 make AUX LED blink at ~5Hz. */
	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);
	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;
}


MACHINE_START(NEO1973_GTA02, "GTA02")
	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
	.phys_io	= S3C2410_PA_UART,
	.io_pg_offst	= (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
	.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>
	52	#include <linux/backlight.h>
	53	#include <linux/regulator/machine.h>
	54
	55	#include <linux/mfd/pcf50633/core.h>
	56	#include <linux/mfd/pcf50633/mbc.h>
	57	#include <linux/mfd/pcf50633/adc.h>
	58	#include <linux/mfd/pcf50633/gpio.h>
	59	#include <linux/mfd/pcf50633/pmic.h>
	60
	61	#include <asm/mach/arch.h>
	62	#include <asm/mach/map.h>
	63	#include <asm/mach/irq.h>
	64
65	#include <asm/irq.h>
66	#include <asm/mach-types.h>
67
68	#include <mach/regs-irq.h>
69	#include <mach/regs-gpio.h>
70	#include <mach/regs-gpioj.h>
71	#include <mach/fb.h>
72
73	#include <mach/spi.h>
74	#include <mach/spi-gpio.h>
75	#include <plat/usb-control.h>
76	#include <mach/regs-mem.h>
77	#include <mach/hardware.h>
78
79	#include <mach/gta02.h>
80
81	#include <plat/regs-serial.h>
82	#include <plat/nand.h>
83	#include <plat/devs.h>
84	#include <plat/cpu.h>
85	#include <plat/pm.h>
86	#include <plat/udc.h>
87	#include <plat/gpio-cfg.h>
88	#include <plat/iic.h>
89
90	static struct pcf50633 *gta02_pcf;
91
92	/*
93	* This gets called every 1ms when we paniced.
94	*/
95
96	static long gta02_panic_blink(long count)
97	{
98	long delay = 0;
99	static long last_blink;
100	static char led;
101
102	/* Fast blink: 200ms period. */
103	if (count - last_blink < 100)
104	return 0;
105
106	led ^= 1;
107	gpio_direction_output(GTA02_GPIO_AUX_LED, led);
108
109	last_blink = count;
110
111	return delay;
112	}
113
114
115	static struct map_desc gta02_iodesc[] __initdata = {
116	{
117	.virtual = 0xe0000000,
118	.pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
119	.length = SZ_1M,
120	.type = MT_DEVICE
121	},
122	};
123
124	#define UCON (S3C2410_UCON_DEFAULT \| S3C2443_UCON_RXERR_IRQEN)
125	#define ULCON (S3C2410_LCON_CS8 \| S3C2410_LCON_PNONE \| S3C2410_LCON_STOPB)
126	#define UFCON (S3C2410_UFCON_RXTRIG8 \| S3C2410_UFCON_FIFOMODE)
127
128	static struct s3c2410_uartcfg gta02_uartcfgs[] = {
129	[0] = {
130	.hwport = 0,
131	.flags = 0,
132	.ucon = UCON,
133	.ulcon = ULCON,
134	.ufcon = UFCON,
135	},
136	[1] = {
137	.hwport = 1,
138	.flags = 0,
139	.ucon = UCON,
140	.ulcon = ULCON,
141	.ufcon = UFCON,
142	},
143	[2] = {
144	.hwport = 2,
145	.flags = 0,
146	.ucon = UCON,
147	.ulcon = ULCON,
148	.ufcon = UFCON,
149	},
150	};
151
152	#ifdef CONFIG_CHARGER_PCF50633
153	/*
154	* On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
155	* We use this to recognize that we can pull 1A from the USB socket.
156	*
157	* These constants are the measured pcf50633 ADC levels with the 1A
158	* charger / 48K resistor, and with no pulldown resistor.
159	*/
160
161	#define ADC_NOM_CHG_DETECT_1A 6
162	#define ADC_NOM_CHG_DETECT_USB 43
163
164	static void
165	gta02_configure_pmu_for_charger(struct pcf50633 pcf, void unused, int res)
166	{
167	int ma;
168
169	/* Interpret charger type */
170	if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
171
172	/*
173	* Sanity - stop GPO driving out now that we have a 1A charger
174	* GPO controls USB Host power generation on GTA02
175	*/
176	pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
177
178	ma = 1000;
179	} else
180	ma = 100;
181
182	pcf50633_mbc_usb_curlim_set(pcf, ma);
183	}
184
185	static struct delayed_work gta02_charger_work;
186	static int gta02_usb_vbus_draw;
187
188	static void gta02_charger_worker(struct work_struct *work)
189	{
190	if (gta02_usb_vbus_draw) {
191	pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
192	return;
193	}
194
195	#ifdef CONFIG_PCF50633_ADC
196	pcf50633_adc_async_read(gta02_pcf,
197	PCF50633_ADCC1_MUX_ADCIN1,
198	PCF50633_ADCC1_AVERAGE_16,
199	gta02_configure_pmu_for_charger,
200	NULL);
201	#else
202	/*
203	* If the PCF50633 ADC is disabled we fallback to a
204	* 100mA limit for safety.
205	*/
206	pcf50633_mbc_usb_curlim_set(pcf, 100);
207	#endif
208	}
209
210	#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
211
212	static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
213	{
214	if (irq == PCF50633_IRQ_USBINS) {
215	schedule_delayed_work(&gta02_charger_work,
216	GTA02_CHARGER_CONFIGURE_TIMEOUT);
217
218	return;
219	}
220
221	if (irq == PCF50633_IRQ_USBREM) {
222	cancel_delayed_work_sync(&gta02_charger_work);
223	gta02_usb_vbus_draw = 0;
224	}
225	}
226
227	static void gta02_udc_vbus_draw(unsigned int ma)
228	{
229	if (!gta02_pcf)
230	return;
231
232	gta02_usb_vbus_draw = ma;
233
234	schedule_delayed_work(&gta02_charger_work,
235	GTA02_CHARGER_CONFIGURE_TIMEOUT);
236	}
237	#else /* !CONFIG_CHARGER_PCF50633 */
238	#define gta02_pmu_event_callback NULL
239	#define gta02_udc_vbus_draw NULL
240	#endif
241
242	/*
243	* This is called when pc50633 is probed, unfortunately quite late in the
244	* day since it is an I2C bus device. Here we can belatedly define some
245	* platform devices with the advantage that we can mark the pcf50633 as the
246	* parent. This makes them get suspended and resumed with their parent
247	* the pcf50633 still around.
248	*/
249
250	static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);
251
252
253	static char *gta02_batteries[] = {
254	"battery",
255	};
256
257	struct pcf50633_platform_data gta02_pcf_pdata = {
258	.resumers = {
259	[0] = PCF50633_INT1_USBINS \|
260	PCF50633_INT1_USBREM \|
261	PCF50633_INT1_ALARM,
262	[1] = PCF50633_INT2_ONKEYF,
263	[2] = PCF50633_INT3_ONKEY1S,
264	[3] = PCF50633_INT4_LOWSYS \|
265	PCF50633_INT4_LOWBAT \|
266	PCF50633_INT4_HIGHTMP,
267	},
268
269	.batteries = gta02_batteries,
270	.num_batteries = ARRAY_SIZE(gta02_batteries),
2f745dde LPC	271
	272	.charger_reference_current_ma = 1000,
	273
9d76295a AG	274	.reg_init_data = {
	275	[PCF50633_REGULATOR_AUTO] = {
	276	.constraints = {
	277	.min_uV = 3300000,
	278	.max_uV = 3300000,
	279	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	280	.always_on = 1,
	281	.apply_uV = 1,
	282	.state_mem = {
	283	.enabled = 1,
	284	},
	285	},
	286	},
	287	[PCF50633_REGULATOR_DOWN1] = {
	288	.constraints = {
	289	.min_uV = 1300000,
	290	.max_uV = 1600000,
	291	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	292	.always_on = 1,
	293	.apply_uV = 1,
	294	},
	295	},
	296	[PCF50633_REGULATOR_DOWN2] = {
	297	.constraints = {
	298	.min_uV = 1800000,
	299	.max_uV = 1800000,
	300	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	301	.apply_uV = 1,
	302	.always_on = 1,
	303	.state_mem = {
	304	.enabled = 1,
	305	},
	306	},
	307	},
	308	[PCF50633_REGULATOR_HCLDO] = {
	309	.constraints = {
	310	.min_uV = 2000000,
	311	.max_uV = 3300000,
	312	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	313	.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
	314	.always_on = 1,
	315	},
	316	},
	317	[PCF50633_REGULATOR_LDO1] = {
	318	.constraints = {
	319	.min_uV = 3300000,
	320	.max_uV = 3300000,
	321	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	322	.apply_uV = 1,
	323	.state_mem = {
	324	.enabled = 0,
	325	},
	326	},
	327	},
	328	[PCF50633_REGULATOR_LDO2] = {
	329	.constraints = {
	330	.min_uV = 3300000,
	331	.max_uV = 3300000,
	332	.valid_modes_mask = REGULATOR_MODE_NORMAL,
	333	.apply_uV = 1,
	334	},
	335	},
	336	[PCF50633_REGULATOR_LDO3] = {
	337	.constraints = {
338	.min_uV = 3000000,
339	.max_uV = 3000000,
340	.valid_modes_mask = REGULATOR_MODE_NORMAL,
341	.apply_uV = 1,
342	},
343	},
344	[PCF50633_REGULATOR_LDO4] = {
345	.constraints = {
346	.min_uV = 3200000,
347	.max_uV = 3200000,
348	.valid_modes_mask = REGULATOR_MODE_NORMAL,
349	.apply_uV = 1,
350	},
351	},
352	[PCF50633_REGULATOR_LDO5] = {
353	.constraints = {
354	.min_uV = 3000000,
355	.max_uV = 3000000,
356	.valid_modes_mask = REGULATOR_MODE_NORMAL,
357	.apply_uV = 1,
358	.state_mem = {
359	.enabled = 1,
360	},
361	},
362	},
363	[PCF50633_REGULATOR_LDO6] = {
364	.constraints = {
365	.min_uV = 3000000,
366	.max_uV = 3000000,
367	.valid_modes_mask = REGULATOR_MODE_NORMAL,
368	},
369	},
370	[PCF50633_REGULATOR_MEMLDO] = {
371	.constraints = {
372	.min_uV = 1800000,
373	.max_uV = 1800000,
374	.valid_modes_mask = REGULATOR_MODE_NORMAL,
375	.state_mem = {
376	.enabled = 1,
377	},
378	},
379	},
380
381	},
382	.probe_done = gta02_pmu_attach_child_devices,
383	.mbc_event_callback = gta02_pmu_event_callback,
384	};
385
386
387	/* NOR Flash. */
388
389	#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */
390	#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */
391
392	static struct physmap_flash_data gta02_nor_flash_data = {
393	.width = 2,
394	};
395
396	static struct resource gta02_nor_flash_resource = {
397	.start = GTA02_FLASH_BASE,
398	.end = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
399	.flags = IORESOURCE_MEM,
400	};
401
402	static struct platform_device gta02_nor_flash = {
403	.name = "physmap-flash",
404	.id = 0,
405	.dev = {
406	.platform_data = &gta02_nor_flash_data,
407	},
408	.resource = &gta02_nor_flash_resource,
409	.num_resources = 1,
410	};
411
412
413	struct platform_device s3c24xx_pwm_device = {
414	.name = "s3c24xx_pwm",
415	.num_resources = 0,
416	};
417
418	static struct i2c_board_info gta02_i2c_devs[] __initdata = {
419	{
420	I2C_BOARD_INFO("pcf50633", 0x73),
421	.irq = GTA02_IRQ_PCF50633,
422	.platform_data = &gta02_pcf_pdata,
423	},
424	{
425	I2C_BOARD_INFO("wm8753", 0x1a),
426	},
427	};
428
2a3a1804	429	static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
9d76295a AG	430	[0] = {
	431	/*
	432	* This name is also hard-coded in the boot loaders, so
	433	* changing it would would require all users to upgrade
	434	* their boot loaders, some of which are stored in a NOR
	435	* that is considered to be immutable.
	436	*/
	437	.name = "neo1973-nand",
	438	.nr_chips = 1,
76609a69	439	.flash_bbt = 1,
9d76295a AG	440	},
	441	};
	442
	443	/*
	444	* Choose a set of timings derived from S3C@2442B MCP54
	445	* data sheet (K5D2G13ACM-D075 MCP Memory).
	446	*/
	447
2a3a1804	448	static struct s3c2410_platform_nand __initdata gta02_nand_info = {
9d76295a AG	449	.tacls = 0,
	450	.twrph0 = 25,
	451	.twrph1 = 15,
	452	.nr_sets = ARRAY_SIZE(gta02_nand_sets),
	453	.sets = gta02_nand_sets,
	454	};
	455
	456
	457	static void gta02_udc_command(enum s3c2410_udc_cmd_e cmd)
	458	{
	459	switch (cmd) {
	460	case S3C2410_UDC_P_ENABLE:
	461	pr_debug("%s S3C2410_UDC_P_ENABLE\n", __func__);
	462	gpio_direction_output(GTA02_GPIO_USB_PULLUP, 1);
	463	break;
	464	case S3C2410_UDC_P_DISABLE:
	465	pr_debug("%s S3C2410_UDC_P_DISABLE\n", __func__);
	466	gpio_direction_output(GTA02_GPIO_USB_PULLUP, 0);
	467	break;
	468	case S3C2410_UDC_P_RESET:
	469	pr_debug("%s S3C2410_UDC_P_RESET\n", __func__);
	470	/* FIXME: Do something here. */
	471	}
	472	}
	473
	474	/* Get PMU to set USB current limit accordingly. */
	475	static struct s3c2410_udc_mach_info gta02_udc_cfg = {
	476	.vbus_draw = gta02_udc_vbus_draw,
	477	.udc_command = gta02_udc_command,
	478
	479	};
	480
	481
	482
	483	static void gta02_bl_set_intensity(int intensity)
	484	{
	485	struct pcf50633 *pcf = gta02_pcf;
	486	int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
	487
	488	/* We map 8-bit intensity to 6-bit intensity in hardware. */
	489	intensity >>= 2;
	490
	491	/*
	492	* This can happen during, eg, print of panic on blanked console,
	493	* but we can't service i2c without interrupts active, so abort.
	494	*/
	495	if (in_atomic()) {
	496	printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
	497	return;
	498	}
	499
	500	old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
	501	if (intensity == old_intensity)
	502	return;
	503
	504	/* We can't do this anywhere else. */
	505	pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
	506
	507	if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
	508	old_intensity = 0;
	509
	510	/*
	511	* The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
	512	* if seen, you have to re-enable the LED unit.
513	*/
514	if (!intensity \|\| !old_intensity)
515	pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
516
517	/* Illegal to set LEDOUT to 0. */
518	if (!intensity)
519	pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
520	else
521	pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
522	intensity);
523
524	if (intensity)
525	pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
526
527	}
528
529	static struct generic_bl_info gta02_bl_info = {
530	.name = "gta02-bl",
531	.max_intensity = 0xff,
532	.default_intensity = 0xff,
533	.set_bl_intensity = gta02_bl_set_intensity,
534	};
535
536	static struct platform_device gta02_bl_dev = {
537	.name = "generic-bl",
538	.id = 1,
539	.dev = {
540	.platform_data = &gta02_bl_info,
541	},
542	};
543
544
545
546	/* USB */
f1267520	547	static struct s3c2410_hcd_info gta02_usb_info __initdata = {
9d76295a AG	548	.port[0] = {
	549	.flags = S3C_HCDFLG_USED,
	550	},
	551	.port[1] = {
	552	.flags = 0,
	553	},
	554	};
	555
	556
	557	static void __init gta02_map_io(void)
	558	{
	559	s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
	560	s3c24xx_init_clocks(12000000);
	561	s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
	562	}
	563
	564
	565	/* These are the guys that don't need to be children of PMU. */
	566
	567	static struct platform_device *gta02_devices[] __initdata = {
b813248c	568	&s3c_device_ohci,
9d76295a AG	569	&s3c_device_wdt,
	570	&s3c_device_sdi,
	571	&s3c_device_usbgadget,
	572	&s3c_device_nand,
	573	&gta02_nor_flash,
	574	&s3c24xx_pwm_device,
	575	&s3c_device_iis,
	576	&s3c_device_i2c0,
	577	};
	578
	579	/* These guys DO need to be children of PMU. */
	580
	581	static struct platform_device *gta02_devices_pmu_children[] = {
	582	&gta02_bl_dev,
	583	};
	584
	585
	586	/*
	587	* This is called when pc50633 is probed, quite late in the day since it is an
	588	* I2C bus device. Here we can define platform devices with the advantage that
	589	* we can mark the pcf50633 as the parent. This makes them get suspended and
	590	* resumed with their parent the pcf50633 still around. All devices whose
	591	* operation depends on something from pcf50633 must have this relationship
	592	* made explicit like this, or suspend and resume will become an unreliable
	593	* hellworld.
	594	*/
	595
	596	static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
	597	{
	598	int n;
	599
	600	/* Grab a copy of the now probed PMU pointer. */
	601	gta02_pcf = pcf;
	602
	603	for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
	604	gta02_devices_pmu_children[n]->dev.parent = pcf->dev;
	605
	606	platform_add_devices(gta02_devices_pmu_children,
	607	ARRAY_SIZE(gta02_devices_pmu_children));
	608	}
	609
	610	static void gta02_poweroff(void)
	611	{
	612	pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
	613	}
	614
	615	static void __init gta02_machine_init(void)
	616	{
	617	/* Set the panic callback to make AUX LED blink at ~5Hz. */
	618	panic_blink = gta02_panic_blink;
	619
	620	s3c_pm_init();
	621
	622	#ifdef CONFIG_CHARGER_PCF50633
	623	INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
	624	#endif
	625
9d76295a	626	s3c24xx_udc_set_platdata(&gta02_udc_cfg);
f1267520	627	s3c_ohci_set_platdata(&gta02_usb_info);
2a3a1804	628	s3c_nand_set_platdata(&gta02_nand_info);
9d76295a AG	629	s3c_i2c0_set_platdata(NULL);
	630
	631	i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
	632
	633	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
	634	pm_power_off = gta02_poweroff;
	635	}
	636
	637
	638	MACHINE_START(NEO1973_GTA02, "GTA02")
	639	/* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
	640	.phys_io = S3C2410_PA_UART,
	641	.io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
	642	.boot_params = S3C2410_SDRAM_PA + 0x100,
	643	.map_io = gta02_map_io,
	644	.init_irq = s3c24xx_init_irq,
	645	.init_machine = gta02_machine_init,
	646	.timer = &s3c24xx_timer,
	647	MACHINE_END