[deliverable/linux.git] / arch / arm / mach-sa1100 / h3xxx.c

/*
 * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code)
 *
 * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
 * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/mfd/htc-egpio.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_data/sa11x0-serial.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>

#include <asm/mach/flash.h>
#include <asm/mach/map.h>

#include <mach/h3xxx.h>

#include "generic.h"

/*
 * H3xxx flash support
 */
static struct mtd_partition h3xxx_partitions[] = {
	{
		.name		= "H3XXX boot firmware",
		.size		= 0x00040000,
		.offset		= 0,
		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
	}, {
		.name		= "H3XXX rootfs",
		.size		= MTDPART_SIZ_FULL,
		.offset		= 0x00040000,
	}
};

static void h3xxx_set_vpp(int vpp)
{
	gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
}

static int h3xxx_flash_init(void)
{
	int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
	if (err) {
		pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
		return err;
	}

	err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
	if (err)
		gpio_free(H3XXX_EGPIO_VPP_ON);

	return err;
}

static void h3xxx_flash_exit(void)
{
	gpio_free(H3XXX_EGPIO_VPP_ON);
}

static struct flash_platform_data h3xxx_flash_data = {
	.map_name	= "cfi_probe",
	.set_vpp	= h3xxx_set_vpp,
	.init		= h3xxx_flash_init,
	.exit		= h3xxx_flash_exit,
	.parts		= h3xxx_partitions,
	.nr_parts	= ARRAY_SIZE(h3xxx_partitions),
};

static struct resource h3xxx_flash_resource =
	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);


/*
 * H3xxx uart support
 */
static struct gpio h3xxx_uart_gpio[] = {
	{ H3XXX_GPIO_COM_DCD,	GPIOF_IN,		"COM DCD" },
	{ H3XXX_GPIO_COM_CTS,	GPIOF_IN,		"COM CTS" },
	{ H3XXX_GPIO_COM_RTS,	GPIOF_OUT_INIT_LOW,	"COM RTS" },
};

static bool h3xxx_uart_request_gpios(void)
{
	static bool h3xxx_uart_gpio_ok;
	int rc;

	if (h3xxx_uart_gpio_ok)
		return true;

	rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio));
	if (rc)
		pr_err("h3xxx_uart_request_gpios: error %d\n", rc);
	else
		h3xxx_uart_gpio_ok = true;

	return h3xxx_uart_gpio_ok;
}

static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	if (port->mapbase == _Ser3UTCR0) {
		if (!h3xxx_uart_request_gpios())
			return;
		gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
	}
}

static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
{
	u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;

	if (port->mapbase == _Ser3UTCR0) {
		if (!h3xxx_uart_request_gpios())
			return ret;
		/*
		 * DCD and CTS bits are inverted in GPLR by RS232 transceiver
		 */
		if (gpio_get_value(H3XXX_GPIO_COM_DCD))
			ret &= ~TIOCM_CD;
		if (gpio_get_value(H3XXX_GPIO_COM_CTS))
			ret &= ~TIOCM_CTS;
	}

	return ret;
}

static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
	if (port->mapbase == _Ser3UTCR0) {
		if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
			gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
			gpio_free(H3XXX_EGPIO_RS232_ON);
		} else {
			pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
				__func__);
		}
	}
}

/*
 * Enable/Disable wake up events for this serial port.
 * Obviously, we only support this on the normal COM port.
 */
static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
{
	int err = -EINVAL;

	if (port->mapbase == _Ser3UTCR0) {
		if (enable)
			PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
		else
			PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
		err = 0;
	}
	return err;
}

static struct sa1100_port_fns h3xxx_port_fns __initdata = {
	.set_mctrl	= h3xxx_uart_set_mctrl,
	.get_mctrl	= h3xxx_uart_get_mctrl,
	.pm		= h3xxx_uart_pm,
	.set_wake	= h3xxx_uart_set_wake,
};

/*
 * EGPIO
 */

static struct resource egpio_resources[] = {
	[0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4),
};

static struct htc_egpio_chip egpio_chips[] = {
	[0] = {
		.reg_start	= 0,
		.gpio_base	= H3XXX_EGPIO_BASE,
		.num_gpios	= 16,
		.direction	= HTC_EGPIO_OUTPUT,
		.initial_values	= 0x0080, /* H3XXX_EGPIO_RS232_ON */
	},
};

static struct htc_egpio_platform_data egpio_info = {
	.reg_width	= 16,
	.bus_width	= 16,
	.chip		= egpio_chips,
	.num_chips	= ARRAY_SIZE(egpio_chips),
};

static struct platform_device h3xxx_egpio = {
	.name		= "htc-egpio",
	.id		= -1,
	.resource	= egpio_resources,
	.num_resources	= ARRAY_SIZE(egpio_resources),
	.dev		= {
		.platform_data = &egpio_info,
	},
};

/*
 * GPIO keys
 */

static struct gpio_keys_button h3xxx_button_table[] = {
	{
		.code		= KEY_POWER,
		.gpio		= H3XXX_GPIO_PWR_BUTTON,
		.desc		= "Power Button",
		.active_low	= 1,
		.type		= EV_KEY,
		.wakeup		= 1,
	}, {
		.code		= KEY_ENTER,
		.gpio		= H3XXX_GPIO_ACTION_BUTTON,
		.active_low	= 1,
		.desc		= "Action button",
		.type		= EV_KEY,
		.wakeup		= 0,
	},
};

static struct gpio_keys_platform_data h3xxx_keys_data = {
	.buttons  = h3xxx_button_table,
	.nbuttons = ARRAY_SIZE(h3xxx_button_table),
};

static struct platform_device h3xxx_keys = {
	.name	= "gpio-keys",
	.id	= -1,
	.dev	= {
		.platform_data = &h3xxx_keys_data,
	},
};

static struct platform_device *h3xxx_devices[] = {
	&h3xxx_egpio,
	&h3xxx_keys,
};

void __init h3xxx_mach_init(void)
{
	sa1100_register_uart_fns(&h3xxx_port_fns);
	sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
	platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
}

static struct map_desc h3600_io_desc[] __initdata = {
	{	/* static memory bank 2  CS#2 */
		.virtual	=  H3600_BANK_2_VIRT,
		.pfn		= __phys_to_pfn(SA1100_CS2_PHYS),
		.length		= 0x02800000,
		.type		= MT_DEVICE
	}, {	/* static memory bank 4  CS#4 */
		.virtual	=  H3600_BANK_4_VIRT,
		.pfn		= __phys_to_pfn(SA1100_CS4_PHYS),
		.length		= 0x00800000,
		.type		= MT_DEVICE
	}, {	/* EGPIO 0		CS#5 */
		.virtual	=  H3600_EGPIO_VIRT,
		.pfn		= __phys_to_pfn(H3600_EGPIO_PHYS),
		.length		= 0x01000000,
		.type		= MT_DEVICE
	}
};

/*
 * Common map_io initialization
 */

void __init h3xxx_map_io(void)
{
	sa1100_map_io();
	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));

	sa1100_register_uart(0, 3); /* Common serial port */
//	sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */

	/* Ensure those pins are outputs and driving low  */
	PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
	PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);

	/* Configure suspend conditions */
	PGSR = 0;
	PCFR = PCFR_OPDE;
	PSDR = 0;

	GPCR = 0x0fffffff;	/* All outputs are set low by default */
	GPDR = 0;		/* Configure all GPIOs as input */
}
Commit	Line	Data
86e5e38c	1	/*
6e23fcb3	2	* Support for Compaq iPAQ H3100 and H3600 handheld computers (common code)
86e5e38c	3	*
6e23fcb3 DA	4	* Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks)
6e23fcb3 DA	5	* Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru>
86e5e38c	6	*
6e23fcb3 DA	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
86e5e38c DA	10	*
86e5e38c DA	11	*/
6e23fcb3	12
86e5e38c	13	#include <linux/kernel.h>
4aa97555	14	#include <linux/gpio.h>
c463eb62 DA	15	#include <linux/gpio_keys.h>
c463eb62 DA	16	#include <linux/input.h>
86e5e38c DA	17	#include <linux/mfd/htc-egpio.h>
	18	#include <linux/mtd/mtd.h>
	19	#include <linux/mtd/partitions.h>
6920b5a7	20	#include <linux/platform_data/sa11x0-serial.h>
86e5e38c	21	#include <linux/platform_device.h>
4aa97555	22	#include <linux/serial_core.h>
86e5e38c	23
86e5e38c	24	#include <asm/mach/flash.h>
86e5e38c	25	#include <asm/mach/map.h>
86e5e38c DA	26
	27	#include <mach/h3xxx.h>
	28
	29	#include "generic.h"
	30
86e5e38c DA	31	/*
	32	* H3xxx flash support
	33	*/
	34	static struct mtd_partition h3xxx_partitions[] = {
	35	{
	36	.name = "H3XXX boot firmware",
	37	.size = 0x00040000,
	38	.offset = 0,
	39	.mask_flags = MTD_WRITEABLE, /* force read-only */
	40	}, {
	41	.name = "H3XXX rootfs",
	42	.size = MTDPART_SIZ_FULL,
	43	.offset = 0x00040000,
	44	}
	45	};
	46
	47	static void h3xxx_set_vpp(int vpp)
	48	{
	49	gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
	50	}
	51
	52	static int h3xxx_flash_init(void)
	53	{
	54	int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
729fae44 DA	55	if (err) {
729fae44 DA	56	pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
86e5e38c	57	return err;
729fae44	58	}
86e5e38c DA	59
	60	err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
	61	if (err)
	62	gpio_free(H3XXX_EGPIO_VPP_ON);
	63
	64	return err;
	65	}
	66
	67	static void h3xxx_flash_exit(void)
	68	{
	69	gpio_free(H3XXX_EGPIO_VPP_ON);
	70	}
	71
	72	static struct flash_platform_data h3xxx_flash_data = {
	73	.map_name = "cfi_probe",
	74	.set_vpp = h3xxx_set_vpp,
	75	.init = h3xxx_flash_init,
	76	.exit = h3xxx_flash_exit,
	77	.parts = h3xxx_partitions,
	78	.nr_parts = ARRAY_SIZE(h3xxx_partitions),
	79	};
	80
a181099e RK	81	static struct resource h3xxx_flash_resource =
a181099e RK	82	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
86e5e38c DA	83
	84
	85	/*
	86	* H3xxx uart support
	87	*/
eb02313d DES	88	static struct gpio h3xxx_uart_gpio[] = {
	89	{ H3XXX_GPIO_COM_DCD, GPIOF_IN, "COM DCD" },
	90	{ H3XXX_GPIO_COM_CTS, GPIOF_IN, "COM CTS" },
	91	{ H3XXX_GPIO_COM_RTS, GPIOF_OUT_INIT_LOW, "COM RTS" },
	92	};
	93
	94	static bool h3xxx_uart_request_gpios(void)
	95	{
	96	static bool h3xxx_uart_gpio_ok;
	97	int rc;
	98
	99	if (h3xxx_uart_gpio_ok)
	100	return true;
	101
	102	rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio));
	103	if (rc)
	104	pr_err("h3xxx_uart_request_gpios: error %d\n", rc);
	105	else
	106	h3xxx_uart_gpio_ok = true;
	107
	108	return h3xxx_uart_gpio_ok;
	109	}
	110
86e5e38c DA	111	static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
	112	{
	113	if (port->mapbase == _Ser3UTCR0) {
eb02313d DES	114	if (!h3xxx_uart_request_gpios())
eb02313d DES	115	return;
86e5e38c DA	116	gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
	117	}
	118	}
	119
	120	static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
	121	{
	122	u_int ret = TIOCM_CD \| TIOCM_CTS \| TIOCM_DSR;
	123
	124	if (port->mapbase == _Ser3UTCR0) {
eb02313d DES	125	if (!h3xxx_uart_request_gpios())
eb02313d DES	126	return ret;
86e5e38c DA	127	/*
	128	* DCD and CTS bits are inverted in GPLR by RS232 transceiver
	129	*/
	130	if (gpio_get_value(H3XXX_GPIO_COM_DCD))
	131	ret &= ~TIOCM_CD;
	132	if (gpio_get_value(H3XXX_GPIO_COM_CTS))
	133	ret &= ~TIOCM_CTS;
	134	}
	135
	136	return ret;
	137	}
	138
	139	static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
	140	{
729fae44	141	if (port->mapbase == _Ser3UTCR0) {
86e5e38c DA	142	if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
	143	gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
	144	gpio_free(H3XXX_EGPIO_RS232_ON);
729fae44 DA	145	} else {
	146	pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
	147	__func__);
86e5e38c	148	}
729fae44	149	}
86e5e38c DA	150	}
	151
	152	/*
	153	* Enable/Disable wake up events for this serial port.
	154	* Obviously, we only support this on the normal COM port.
	155	*/
	156	static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
	157	{
	158	int err = -EINVAL;
	159
	160	if (port->mapbase == _Ser3UTCR0) {
	161	if (enable)
	162	PWER \|= PWER_GPIO23 \| PWER_GPIO25; /* DCD and CTS */
	163	else
	164	PWER &= ~(PWER_GPIO23 \| PWER_GPIO25); /* DCD and CTS */
	165	err = 0;
	166	}
	167	return err;
	168	}
	169
	170	static struct sa1100_port_fns h3xxx_port_fns __initdata = {
	171	.set_mctrl = h3xxx_uart_set_mctrl,
	172	.get_mctrl = h3xxx_uart_get_mctrl,
	173	.pm = h3xxx_uart_pm,
	174	.set_wake = h3xxx_uart_set_wake,
	175	};
	176
	177	/*
	178	* EGPIO
	179	*/
	180
	181	static struct resource egpio_resources[] = {
a181099e	182	[0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4),
86e5e38c DA	183	};
	184
	185	static struct htc_egpio_chip egpio_chips[] = {
	186	[0] = {
	187	.reg_start = 0,
	188	.gpio_base = H3XXX_EGPIO_BASE,
	189	.num_gpios = 16,
	190	.direction = HTC_EGPIO_OUTPUT,
	191	.initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
	192	},
	193	};
	194
	195	static struct htc_egpio_platform_data egpio_info = {
	196	.reg_width = 16,
	197	.bus_width = 16,
	198	.chip = egpio_chips,
	199	.num_chips = ARRAY_SIZE(egpio_chips),
	200	};
	201
	202	static struct platform_device h3xxx_egpio = {
	203	.name = "htc-egpio",
	204	.id = -1,
	205	.resource = egpio_resources,
	206	.num_resources = ARRAY_SIZE(egpio_resources),
	207	.dev = {
	208	.platform_data = &egpio_info,
	209	},
	210	};
	211
c463eb62 DA	212	/*
	213	* GPIO keys
	214	*/
	215
	216	static struct gpio_keys_button h3xxx_button_table[] = {
	217	{
	218	.code = KEY_POWER,
	219	.gpio = H3XXX_GPIO_PWR_BUTTON,
	220	.desc = "Power Button",
	221	.active_low = 1,
	222	.type = EV_KEY,
	223	.wakeup = 1,
	224	}, {
	225	.code = KEY_ENTER,
	226	.gpio = H3XXX_GPIO_ACTION_BUTTON,
	227	.active_low = 1,
	228	.desc = "Action button",
	229	.type = EV_KEY,
	230	.wakeup = 0,
	231	},
	232	};
	233
	234	static struct gpio_keys_platform_data h3xxx_keys_data = {
	235	.buttons = h3xxx_button_table,
	236	.nbuttons = ARRAY_SIZE(h3xxx_button_table),
	237	};
	238
	239	static struct platform_device h3xxx_keys = {
	240	.name = "gpio-keys",
	241	.id = -1,
	242	.dev = {
	243	.platform_data = &h3xxx_keys_data,
	244	},
	245	};
	246
86e5e38c DA	247	static struct platform_device *h3xxx_devices[] = {
86e5e38c DA	248	&h3xxx_egpio,
c463eb62	249	&h3xxx_keys,
86e5e38c DA	250	};
	251
	252	void __init h3xxx_mach_init(void)
	253	{
	254	sa1100_register_uart_fns(&h3xxx_port_fns);
	255	sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
	256	platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
	257	}
	258
	259	static struct map_desc h3600_io_desc[] __initdata = {
	260	{ /* static memory bank 2 CS#2 */
	261	.virtual = H3600_BANK_2_VIRT,
	262	.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
	263	.length = 0x02800000,
	264	.type = MT_DEVICE
	265	}, { /* static memory bank 4 CS#4 */
	266	.virtual = H3600_BANK_4_VIRT,
	267	.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
	268	.length = 0x00800000,
	269	.type = MT_DEVICE
	270	}, { /* EGPIO 0 CS#5 */
	271	.virtual = H3600_EGPIO_VIRT,
	272	.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
	273	.length = 0x01000000,
	274	.type = MT_DEVICE
	275	}
	276	};
	277
	278	/*
	279	* Common map_io initialization
	280	*/
	281
	282	void __init h3xxx_map_io(void)
	283	{
	284	sa1100_map_io();
	285	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
	286
	287	sa1100_register_uart(0, 3); /* Common serial port */
	288	// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
	289
	290	/* Ensure those pins are outputs and driving low */
	291	PPDR \|= PPC_TXD4 \| PPC_SCLK \| PPC_SFRM;
	292	PPSR &= ~(PPC_TXD4 \| PPC_SCLK \| PPC_SFRM);
	293
	294	/* Configure suspend conditions */
	295	PGSR = 0;
86e5e38c DA	296	PCFR = PCFR_OPDE;
	297	PSDR = 0;
	298
	299	GPCR = 0x0fffffff; /* All outputs are set low by default */
	300	GPDR = 0; /* Configure all GPIOs as input */
	301	}
	302