[GitHub/mt8127/android_kernel_alcatel_ttab.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_device.h>
#include <linux/serial_core.h>

#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>

#include <mach/h3xxx.h>

#include "generic.h"

void h3xxx_init_gpio(struct gpio_default_state *s, size_t n)
{
	while (n--) {
		const char *name = s->name;
		int err;

		if (!name)
			name = "[init]";
		err = gpio_request(s->gpio, name);
		if (err) {
			printk(KERN_ERR "gpio%u: unable to request: %d\n",
				s->gpio, err);
			continue;
		}
		if (s->mode >= 0) {
			err = gpio_direction_output(s->gpio, s->mode);
		} else {
			err = gpio_direction_input(s->gpio);
		}
		if (err) {
			printk(KERN_ERR "gpio%u: unable to set direction: %d\n",
				s->gpio, err);
			continue;
		}
		if (!s->name)
			gpio_free(s->gpio);
		s++;
	}
}


/*
 * 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 = {
	.start		= SA1100_CS0_PHYS,
	.end		= SA1100_CS0_PHYS + SZ_32M - 1,
	.flags		= IORESOURCE_MEM,
};


/*
 * H3xxx uart support
 */
static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
	if (port->mapbase == _Ser3UTCR0) {
		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) {
		/*
		 * 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] = {
		.start	= H3600_EGPIO_PHYS,
		.end	= H3600_EGPIO_PHYS + 0x4 - 1,
		.flags	= IORESOURCE_MEM,
	},
};

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>
86e5e38c	20	#include <linux/platform_device.h>
4aa97555	21	#include <linux/serial_core.h>
86e5e38c	22
86e5e38c	23	#include <asm/mach/flash.h>
86e5e38c DA	24	#include <asm/mach/map.h>
	25	#include <asm/mach/serial_sa1100.h>
	26
	27	#include <mach/h3xxx.h>
	28
	29	#include "generic.h"
	30
	31	void h3xxx_init_gpio(struct gpio_default_state *s, size_t n)
	32	{
	33	while (n--) {
	34	const char *name = s->name;
	35	int err;
	36
	37	if (!name)
	38	name = "[init]";
	39	err = gpio_request(s->gpio, name);
	40	if (err) {
	41	printk(KERN_ERR "gpio%u: unable to request: %d\n",
	42	s->gpio, err);
	43	continue;
	44	}
	45	if (s->mode >= 0) {
	46	err = gpio_direction_output(s->gpio, s->mode);
	47	} else {
	48	err = gpio_direction_input(s->gpio);
	49	}
	50	if (err) {
	51	printk(KERN_ERR "gpio%u: unable to set direction: %d\n",
	52	s->gpio, err);
	53	continue;
	54	}
	55	if (!s->name)
	56	gpio_free(s->gpio);
	57	s++;
	58	}
	59	}
	60
	61
	62	/*
	63	* H3xxx flash support
	64	*/
	65	static struct mtd_partition h3xxx_partitions[] = {
	66	{
	67	.name = "H3XXX boot firmware",
	68	.size = 0x00040000,
	69	.offset = 0,
	70	.mask_flags = MTD_WRITEABLE, /* force read-only */
	71	}, {
	72	.name = "H3XXX rootfs",
	73	.size = MTDPART_SIZ_FULL,
	74	.offset = 0x00040000,
	75	}
	76	};
	77
	78	static void h3xxx_set_vpp(int vpp)
	79	{
	80	gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp);
	81	}
	82
	83	static int h3xxx_flash_init(void)
	84	{
	85	int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp");
729fae44 DA	86	if (err) {
729fae44 DA	87	pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__);
86e5e38c	88	return err;
729fae44	89	}
86e5e38c DA	90
	91	err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0);
	92	if (err)
	93	gpio_free(H3XXX_EGPIO_VPP_ON);
	94
	95	return err;
	96	}
	97
	98	static void h3xxx_flash_exit(void)
	99	{
	100	gpio_free(H3XXX_EGPIO_VPP_ON);
	101	}
	102
	103	static struct flash_platform_data h3xxx_flash_data = {
	104	.map_name = "cfi_probe",
	105	.set_vpp = h3xxx_set_vpp,
	106	.init = h3xxx_flash_init,
	107	.exit = h3xxx_flash_exit,
	108	.parts = h3xxx_partitions,
	109	.nr_parts = ARRAY_SIZE(h3xxx_partitions),
	110	};
	111
	112	static struct resource h3xxx_flash_resource = {
	113	.start = SA1100_CS0_PHYS,
	114	.end = SA1100_CS0_PHYS + SZ_32M - 1,
	115	.flags = IORESOURCE_MEM,
	116	};
	117
	118
	119	/*
	120	* H3xxx uart support
	121	*/
	122	static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl)
	123	{
	124	if (port->mapbase == _Ser3UTCR0) {
	125	gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS));
	126	}
	127	}
	128
	129	static u_int h3xxx_uart_get_mctrl(struct uart_port *port)
	130	{
	131	u_int ret = TIOCM_CD \| TIOCM_CTS \| TIOCM_DSR;
	132
	133	if (port->mapbase == _Ser3UTCR0) {
	134	/*
	135	* DCD and CTS bits are inverted in GPLR by RS232 transceiver
	136	*/
	137	if (gpio_get_value(H3XXX_GPIO_COM_DCD))
	138	ret &= ~TIOCM_CD;
	139	if (gpio_get_value(H3XXX_GPIO_COM_CTS))
	140	ret &= ~TIOCM_CTS;
	141	}
	142
	143	return ret;
	144	}
	145
	146	static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
	147	{
729fae44	148	if (port->mapbase == _Ser3UTCR0) {
86e5e38c DA	149	if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) {
	150	gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state);
	151	gpio_free(H3XXX_EGPIO_RS232_ON);
729fae44 DA	152	} else {
	153	pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n",
	154	__func__);
86e5e38c	155	}
729fae44	156	}
86e5e38c DA	157	}
	158
	159	/*
	160	* Enable/Disable wake up events for this serial port.
	161	* Obviously, we only support this on the normal COM port.
	162	*/
	163	static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable)
	164	{
	165	int err = -EINVAL;
	166
	167	if (port->mapbase == _Ser3UTCR0) {
	168	if (enable)
	169	PWER \|= PWER_GPIO23 \| PWER_GPIO25; /* DCD and CTS */
	170	else
	171	PWER &= ~(PWER_GPIO23 \| PWER_GPIO25); /* DCD and CTS */
	172	err = 0;
	173	}
	174	return err;
	175	}
	176
	177	static struct sa1100_port_fns h3xxx_port_fns __initdata = {
	178	.set_mctrl = h3xxx_uart_set_mctrl,
	179	.get_mctrl = h3xxx_uart_get_mctrl,
	180	.pm = h3xxx_uart_pm,
	181	.set_wake = h3xxx_uart_set_wake,
	182	};
	183
	184	/*
	185	* EGPIO
	186	*/
	187
	188	static struct resource egpio_resources[] = {
	189	[0] = {
	190	.start = H3600_EGPIO_PHYS,
	191	.end = H3600_EGPIO_PHYS + 0x4 - 1,
	192	.flags = IORESOURCE_MEM,
	193	},
	194	};
	195
	196	static struct htc_egpio_chip egpio_chips[] = {
	197	[0] = {
	198	.reg_start = 0,
	199	.gpio_base = H3XXX_EGPIO_BASE,
	200	.num_gpios = 16,
	201	.direction = HTC_EGPIO_OUTPUT,
	202	.initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
	203	},
	204	};
	205
	206	static struct htc_egpio_platform_data egpio_info = {
	207	.reg_width = 16,
	208	.bus_width = 16,
	209	.chip = egpio_chips,
	210	.num_chips = ARRAY_SIZE(egpio_chips),
	211	};
	212
	213	static struct platform_device h3xxx_egpio = {
	214	.name = "htc-egpio",
	215	.id = -1,
	216	.resource = egpio_resources,
	217	.num_resources = ARRAY_SIZE(egpio_resources),
	218	.dev = {
	219	.platform_data = &egpio_info,
	220	},
221	};
222
c463eb62 DA	223	/*
	224	* GPIO keys
	225	*/
	226
	227	static struct gpio_keys_button h3xxx_button_table[] = {
	228	{
	229	.code = KEY_POWER,
	230	.gpio = H3XXX_GPIO_PWR_BUTTON,
	231	.desc = "Power Button",
	232	.active_low = 1,
	233	.type = EV_KEY,
	234	.wakeup = 1,
	235	}, {
	236	.code = KEY_ENTER,
	237	.gpio = H3XXX_GPIO_ACTION_BUTTON,
	238	.active_low = 1,
	239	.desc = "Action button",
	240	.type = EV_KEY,
	241	.wakeup = 0,
	242	},
	243	};
	244
	245	static struct gpio_keys_platform_data h3xxx_keys_data = {
	246	.buttons = h3xxx_button_table,
	247	.nbuttons = ARRAY_SIZE(h3xxx_button_table),
	248	};
	249
	250	static struct platform_device h3xxx_keys = {
	251	.name = "gpio-keys",
	252	.id = -1,
	253	.dev = {
	254	.platform_data = &h3xxx_keys_data,
	255	},
	256	};
	257
86e5e38c DA	258	static struct platform_device *h3xxx_devices[] = {
86e5e38c DA	259	&h3xxx_egpio,
c463eb62	260	&h3xxx_keys,
86e5e38c DA	261	};
	262
	263	void __init h3xxx_mach_init(void)
	264	{
	265	sa1100_register_uart_fns(&h3xxx_port_fns);
	266	sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
	267	platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
	268	}
	269
	270	static struct map_desc h3600_io_desc[] __initdata = {
	271	{ /* static memory bank 2 CS#2 */
	272	.virtual = H3600_BANK_2_VIRT,
	273	.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
	274	.length = 0x02800000,
	275	.type = MT_DEVICE
	276	}, { /* static memory bank 4 CS#4 */
	277	.virtual = H3600_BANK_4_VIRT,
	278	.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
	279	.length = 0x00800000,
	280	.type = MT_DEVICE
	281	}, { /* EGPIO 0 CS#5 */
	282	.virtual = H3600_EGPIO_VIRT,
	283	.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
	284	.length = 0x01000000,
	285	.type = MT_DEVICE
	286	}
	287	};
	288
	289	/*
	290	* Common map_io initialization
	291	*/
	292
	293	void __init h3xxx_map_io(void)
	294	{
	295	sa1100_map_io();
	296	iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
	297
	298	sa1100_register_uart(0, 3); /* Common serial port */
	299	// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
	300
	301	/* Ensure those pins are outputs and driving low */
	302	PPDR \|= PPC_TXD4 \| PPC_SCLK \| PPC_SFRM;
	303	PPSR &= ~(PPC_TXD4 \| PPC_SCLK \| PPC_SFRM);
	304
	305	/* Configure suspend conditions */
	306	PGSR = 0;
86e5e38c DA	307	PCFR = PCFR_OPDE;
	308	PSDR = 0;
	309
	310	GPCR = 0x0fffffff; /* All outputs are set low by default */
	311	GPDR = 0; /* Configure all GPIOs as input */
	312	}
	313