[deliverable/linux.git] / arch / arm / mach-mx5 / board-mx51_efikamx.c

/*
 * Copyright (C) 2010 Linaro Limited
 *
 * based on code from the following
 * Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
 * Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
 * Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 or later at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <linux/mfd/mc13892.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/consumer.h>

#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx51.h>

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

#include "devices-imx51.h"
#include "devices.h"
#include "efika.h"

#define EFIKAMX_PCBID0		IMX_GPIO_NR(3, 16)
#define EFIKAMX_PCBID1		IMX_GPIO_NR(3, 17)
#define EFIKAMX_PCBID2		IMX_GPIO_NR(3, 11)

#define EFIKAMX_BLUE_LED	IMX_GPIO_NR(3, 13)
#define EFIKAMX_GREEN_LED	IMX_GPIO_NR(3, 14)
#define EFIKAMX_RED_LED		IMX_GPIO_NR(3, 15)

#define EFIKAMX_POWER_KEY	IMX_GPIO_NR(2, 31)

/* board 1.1 doesn't have same reset gpio */
#define EFIKAMX_RESET1_1	IMX_GPIO_NR(3, 2)
#define EFIKAMX_RESET		IMX_GPIO_NR(1, 4)

#define EFIKAMX_POWEROFF	IMX_GPIO_NR(4, 13)

#define EFIKAMX_PMIC		IMX_GPIO_NR(1, 6)

/* the pci ids pin have pull up. they're driven low according to board id */
#define MX51_PAD_PCBID0	IOMUX_PAD(0x518, 0x130, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PCBID1	IOMUX_PAD(0x51C, 0x134, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PCBID2	IOMUX_PAD(0x504, 0x128, 3, 0x0,   0, PAD_CTL_PUS_100K_UP)
#define MX51_PAD_PWRKEY	IOMUX_PAD(0x48c, 0x0f8, 1, 0x0,   0, PAD_CTL_PUS_100K_UP | PAD_CTL_PKE)

static iomux_v3_cfg_t mx51efikamx_pads[] = {
	/* board id */
	MX51_PAD_PCBID0,
	MX51_PAD_PCBID1,
	MX51_PAD_PCBID2,

	/* leds */
	MX51_PAD_CSI1_D9__GPIO3_13,
	MX51_PAD_CSI1_VSYNC__GPIO3_14,
	MX51_PAD_CSI1_HSYNC__GPIO3_15,

	/* power key */
	MX51_PAD_PWRKEY,

	/* reset */
	MX51_PAD_DI1_PIN13__GPIO3_2,
	MX51_PAD_GPIO1_4__GPIO1_4,

	/* power off */
	MX51_PAD_CSI2_VSYNC__GPIO4_13,
};

/*   PCBID2  PCBID1 PCBID0  STATE
	1       1      1    ER1:rev1.1
	1       1      0    ER2:rev1.2
	1       0      1    ER3:rev1.3
	1       0      0    ER4:rev1.4
*/
static void __init mx51_efikamx_board_id(void)
{
	int id;

	/* things are taking time to settle */
	msleep(150);

	gpio_request(EFIKAMX_PCBID0, "pcbid0");
	gpio_direction_input(EFIKAMX_PCBID0);
	gpio_request(EFIKAMX_PCBID1, "pcbid1");
	gpio_direction_input(EFIKAMX_PCBID1);
	gpio_request(EFIKAMX_PCBID2, "pcbid2");
	gpio_direction_input(EFIKAMX_PCBID2);

	id = gpio_get_value(EFIKAMX_PCBID0);
	id |= gpio_get_value(EFIKAMX_PCBID1) << 1;
	id |= gpio_get_value(EFIKAMX_PCBID2) << 2;

	switch (id) {
	case 7:
		system_rev = 0x11;
		break;
	case 6:
		system_rev = 0x12;
		break;
	case 5:
		system_rev = 0x13;
		break;
	case 4:
		system_rev = 0x14;
		break;
	default:
		system_rev = 0x10;
		break;
	}

	if ((system_rev == 0x10)
		|| (system_rev == 0x12)
		|| (system_rev == 0x14)) {
		printk(KERN_WARNING
			"EfikaMX: Unsupported board revision 1.%u!\n",
			system_rev & 0xf);
	}
}

static struct gpio_led mx51_efikamx_leds[] = {
	{
		.name = "efikamx:green",
		.default_trigger = "default-on",
		.gpio = EFIKAMX_GREEN_LED,
	},
	{
		.name = "efikamx:red",
		.default_trigger = "ide-disk",
		.gpio = EFIKAMX_RED_LED,
	},
	{
		.name = "efikamx:blue",
		.default_trigger = "mmc0",
		.gpio = EFIKAMX_BLUE_LED,
	},
};

static struct gpio_led_platform_data mx51_efikamx_leds_data = {
	.leds = mx51_efikamx_leds,
	.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
};

static struct platform_device mx51_efikamx_leds_device = {
	.name = "leds-gpio",
	.id = -1,
	.dev = {
		.platform_data = &mx51_efikamx_leds_data,
	},
};

static struct gpio_keys_button mx51_efikamx_powerkey[] = {
	{
		.code = KEY_POWER,
		.gpio = EFIKAMX_POWER_KEY,
		.type = EV_PWR,
		.desc = "Power Button (CM)",
		.wakeup = 1,
		.debounce_interval = 10, /* ms */
	},
};

static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
	.buttons = mx51_efikamx_powerkey,
	.nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
};

void mx51_efikamx_reset(void)
{
	if (system_rev == 0x11)
		gpio_direction_output(EFIKAMX_RESET1_1, 0);
	else
		gpio_direction_output(EFIKAMX_RESET, 0);
}

static struct regulator *pwgt1, *pwgt2, *coincell;

static void mx51_efikamx_power_off(void)
{
	if (!IS_ERR(coincell))
		regulator_disable(coincell);

	if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
		regulator_disable(pwgt2);
		regulator_disable(pwgt1);
	}
	gpio_direction_output(EFIKAMX_POWEROFF, 1);
}

static int __init mx51_efikamx_power_init(void)
{
	if (machine_is_mx51_efikamx()) {
		pwgt1 = regulator_get(NULL, "pwgt1");
		pwgt2 = regulator_get(NULL, "pwgt2");
		if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
			regulator_enable(pwgt1);
			regulator_enable(pwgt2);
		}
		gpio_request(EFIKAMX_POWEROFF, "poweroff");
		pm_power_off = mx51_efikamx_power_off;

		/* enable coincell charger. maybe need a small power driver ? */
		coincell = regulator_get(NULL, "coincell");
		if (!IS_ERR(coincell)) {
			regulator_set_voltage(coincell, 3000000, 3000000);
			regulator_enable(coincell);
		}

		regulator_has_full_constraints();
	}

	return 0;
}
late_initcall(mx51_efikamx_power_init);

static void __init mx51_efikamx_init(void)
{
	mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
					ARRAY_SIZE(mx51efikamx_pads));
	efika_board_common_init();

	mx51_efikamx_board_id();

	/* on < 1.2 boards both SD controllers are used */
	if (system_rev < 0x12) {
		imx51_add_sdhci_esdhc_imx(1, NULL);
		mx51_efikamx_leds[2].default_trigger = "mmc1";
	}

	platform_device_register(&mx51_efikamx_leds_device);
	imx_add_gpio_keys(&mx51_efikamx_powerkey_data);

	if (system_rev == 0x11) {
		gpio_request(EFIKAMX_RESET1_1, "reset");
		gpio_direction_output(EFIKAMX_RESET1_1, 1);
	} else {
		gpio_request(EFIKAMX_RESET, "reset");
		gpio_direction_output(EFIKAMX_RESET, 1);
	}

	/*
	 * enable wifi by default only on mx
	 * sb and mx have same wlan pin but the value to enable it are
	 * different :/
	 */
	gpio_request(EFIKA_WLAN_EN, "wlan_en");
	gpio_direction_output(EFIKA_WLAN_EN, 0);
	msleep(10);

	gpio_request(EFIKA_WLAN_RESET, "wlan_rst");
	gpio_direction_output(EFIKA_WLAN_RESET, 0);
	msleep(10);
	gpio_set_value(EFIKA_WLAN_RESET, 1);
}

static void __init mx51_efikamx_timer_init(void)
{
	mx51_clocks_init(32768, 24000000, 22579200, 24576000);
}

static struct sys_timer mx51_efikamx_timer = {
	.init = mx51_efikamx_timer_init,
};

MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
	/* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
	.boot_params = MX51_PHYS_OFFSET + 0x100,
	.map_io = mx51_map_io,
	.init_early = imx51_init_early,
	.init_irq = mx51_init_irq,
	.timer = &mx51_efikamx_timer,
	.init_machine = mx51_efikamx_init,
MACHINE_END
Commit	Line	Data
088d01b0 AK	1	/*
	2	* Copyright (C) 2010 Linaro Limited
	3	*
	4	* based on code from the following
	5	* Copyright 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved.
	6	* Copyright 2009-2010 Pegatron Corporation. All Rights Reserved.
	7	* Copyright 2009-2010 Genesi USA, Inc. All Rights Reserved.
	8	*
	9	* The code contained herein is licensed under the GNU General Public
	10	* License. You may obtain a copy of the GNU General Public License
	11	* Version 2 or later at the following locations:
	12	*
	13	* http://www.opensource.org/licenses/gpl-license.html
	14	* http://www.gnu.org/copyleft/gpl.html
	15	*/
	16
	17	#include <linux/init.h>
	18	#include <linux/platform_device.h>
	19	#include <linux/i2c.h>
	20	#include <linux/gpio.h>
9d2c0ef7	21	#include <linux/leds.h>
fcbd0c5f	22	#include <linux/input.h>
088d01b0 AK	23	#include <linux/delay.h>
088d01b0 AK	24	#include <linux/io.h>
c6e34a4c APR	25	#include <linux/spi/flash.h>
c6e34a4c APR	26	#include <linux/spi/spi.h>
2432cff0 APR	27	#include <linux/mfd/mc13892.h>
	28	#include <linux/regulator/machine.h>
	29	#include <linux/regulator/consumer.h>
088d01b0 AK	30
	31	#include <mach/common.h>
	32	#include <mach/hardware.h>
	33	#include <mach/iomux-mx51.h>
088d01b0 AK	34
	35	#include <asm/irq.h>
	36	#include <asm/setup.h>
	37	#include <asm/mach-types.h>
	38	#include <asm/mach/arch.h>
	39	#include <asm/mach/time.h>
	40
	41	#include "devices-imx51.h"
	42	#include "devices.h"
7ac18a38	43	#include "efika.h"
81490fcd	44
96886c43 APR	45	#define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16)
	46	#define EFIKAMX_PCBID1 IMX_GPIO_NR(3, 17)
	47	#define EFIKAMX_PCBID2 IMX_GPIO_NR(3, 11)
f1dd361b	48
96886c43 APR	49	#define EFIKAMX_BLUE_LED IMX_GPIO_NR(3, 13)
	50	#define EFIKAMX_GREEN_LED IMX_GPIO_NR(3, 14)
	51	#define EFIKAMX_RED_LED IMX_GPIO_NR(3, 15)
9d2c0ef7	52
96886c43	53	#define EFIKAMX_POWER_KEY IMX_GPIO_NR(2, 31)
fcbd0c5f	54
c2932bf4	55	/* board 1.1 doesn't have same reset gpio */
96886c43 APR	56	#define EFIKAMX_RESET1_1 IMX_GPIO_NR(3, 2)
96886c43 APR	57	#define EFIKAMX_RESET IMX_GPIO_NR(1, 4)
c2932bf4	58
2432cff0 APR	59	#define EFIKAMX_POWEROFF IMX_GPIO_NR(4, 13)
	60
	61	#define EFIKAMX_PMIC IMX_GPIO_NR(1, 6)
	62
f1dd361b APR	63	/* the pci ids pin have pull up. they're driven low according to board id */
	64	#define MX51_PAD_PCBID0 IOMUX_PAD(0x518, 0x130, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
	65	#define MX51_PAD_PCBID1 IOMUX_PAD(0x51C, 0x134, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
	66	#define MX51_PAD_PCBID2 IOMUX_PAD(0x504, 0x128, 3, 0x0, 0, PAD_CTL_PUS_100K_UP)
fcbd0c5f	67	#define MX51_PAD_PWRKEY IOMUX_PAD(0x48c, 0x0f8, 1, 0x0, 0, PAD_CTL_PUS_100K_UP \| PAD_CTL_PKE)
f1dd361b	68
8f5260c8	69	static iomux_v3_cfg_t mx51efikamx_pads[] = {
f1dd361b APR	70	/* board id */
	71	MX51_PAD_PCBID0,
	72	MX51_PAD_PCBID1,
	73	MX51_PAD_PCBID2,
a96eb148	74
9d2c0ef7	75	/* leds */
ee1ae4d7 SH	76	MX51_PAD_CSI1_D9__GPIO3_13,
	77	MX51_PAD_CSI1_VSYNC__GPIO3_14,
	78	MX51_PAD_CSI1_HSYNC__GPIO3_15,
fcbd0c5f APR	79
	80	/* power key */
	81	MX51_PAD_PWRKEY,
c6e34a4c	82
c2932bf4	83	/* reset */
ee1ae4d7 SH	84	MX51_PAD_DI1_PIN13__GPIO3_2,
ee1ae4d7 SH	85	MX51_PAD_GPIO1_4__GPIO1_4,
2432cff0 APR	86
	87	/* power off */
	88	MX51_PAD_CSI2_VSYNC__GPIO4_13,
088d01b0 AK	89	};
088d01b0 AK	90
f1dd361b APR	91	/* PCBID2 PCBID1 PCBID0 STATE
	92	1 1 1 ER1:rev1.1
	93	1 1 0 ER2:rev1.2
	94	1 0 1 ER3:rev1.3
	95	1 0 0 ER4:rev1.4
	96	*/
	97	static void __init mx51_efikamx_board_id(void)
	98	{
	99	int id;
	100
	101	/* things are taking time to settle */
	102	msleep(150);
	103
	104	gpio_request(EFIKAMX_PCBID0, "pcbid0");
	105	gpio_direction_input(EFIKAMX_PCBID0);
	106	gpio_request(EFIKAMX_PCBID1, "pcbid1");
	107	gpio_direction_input(EFIKAMX_PCBID1);
	108	gpio_request(EFIKAMX_PCBID2, "pcbid2");
	109	gpio_direction_input(EFIKAMX_PCBID2);
	110
	111	id = gpio_get_value(EFIKAMX_PCBID0);
	112	id \|= gpio_get_value(EFIKAMX_PCBID1) << 1;
	113	id \|= gpio_get_value(EFIKAMX_PCBID2) << 2;
	114
	115	switch (id) {
	116	case 7:
	117	system_rev = 0x11;
	118	break;
	119	case 6:
	120	system_rev = 0x12;
	121	break;
	122	case 5:
	123	system_rev = 0x13;
	124	break;
	125	case 4:
	126	system_rev = 0x14;
	127	break;
	128	default:
	129	system_rev = 0x10;
	130	break;
	131	}
	132
	133	if ((system_rev == 0x10)
	134	\|\| (system_rev == 0x12)
	135	\|\| (system_rev == 0x14)) {
	136	printk(KERN_WARNING
	137	"EfikaMX: Unsupported board revision 1.%u!\n",
	138	system_rev & 0xf);
	139	}
	140	}
	141
9d2c0ef7 APR	142	static struct gpio_led mx51_efikamx_leds[] = {
	143	{
	144	.name = "efikamx:green",
	145	.default_trigger = "default-on",
	146	.gpio = EFIKAMX_GREEN_LED,
	147	},
	148	{
	149	.name = "efikamx:red",
	150	.default_trigger = "ide-disk",
	151	.gpio = EFIKAMX_RED_LED,
	152	},
	153	{
	154	.name = "efikamx:blue",
	155	.default_trigger = "mmc0",
	156	.gpio = EFIKAMX_BLUE_LED,
	157	},
	158	};
	159
	160	static struct gpio_led_platform_data mx51_efikamx_leds_data = {
	161	.leds = mx51_efikamx_leds,
	162	.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
	163	};
	164
	165	static struct platform_device mx51_efikamx_leds_device = {
	166	.name = "leds-gpio",
	167	.id = -1,
	168	.dev = {
	169	.platform_data = &mx51_efikamx_leds_data,
	170	},
	171	};
	172
fcbd0c5f APR	173	static struct gpio_keys_button mx51_efikamx_powerkey[] = {
	174	{
	175	.code = KEY_POWER,
	176	.gpio = EFIKAMX_POWER_KEY,
	177	.type = EV_PWR,
	178	.desc = "Power Button (CM)",
	179	.wakeup = 1,
	180	.debounce_interval = 10, /* ms */
	181	},
	182	};
	183
	184	static const struct gpio_keys_platform_data mx51_efikamx_powerkey_data __initconst = {
	185	.buttons = mx51_efikamx_powerkey,
	186	.nbuttons = ARRAY_SIZE(mx51_efikamx_powerkey),
	187	};
	188
c2932bf4 APR	189	void mx51_efikamx_reset(void)
	190	{
	191	if (system_rev == 0x11)
	192	gpio_direction_output(EFIKAMX_RESET1_1, 0);
	193	else
	194	gpio_direction_output(EFIKAMX_RESET, 0);
	195	}
	196
2432cff0 APR	197	static struct regulator pwgt1, pwgt2, *coincell;
	198
	199	static void mx51_efikamx_power_off(void)
	200	{
	201	if (!IS_ERR(coincell))
	202	regulator_disable(coincell);
	203
	204	if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
	205	regulator_disable(pwgt2);
	206	regulator_disable(pwgt1);
	207	}
	208	gpio_direction_output(EFIKAMX_POWEROFF, 1);
	209	}
	210
	211	static int __init mx51_efikamx_power_init(void)
	212	{
	213	if (machine_is_mx51_efikamx()) {
	214	pwgt1 = regulator_get(NULL, "pwgt1");
	215	pwgt2 = regulator_get(NULL, "pwgt2");
	216	if (!IS_ERR(pwgt1) && !IS_ERR(pwgt2)) {
	217	regulator_enable(pwgt1);
	218	regulator_enable(pwgt2);
	219	}
	220	gpio_request(EFIKAMX_POWEROFF, "poweroff");
	221	pm_power_off = mx51_efikamx_power_off;
	222
	223	/* enable coincell charger. maybe need a small power driver ? */
	224	coincell = regulator_get(NULL, "coincell");
	225	if (!IS_ERR(coincell)) {
	226	regulator_set_voltage(coincell, 3000000, 3000000);
	227	regulator_enable(coincell);
	228	}
	229
	230	regulator_has_full_constraints();
	231	}
	232
	233	return 0;
	234	}
	235	late_initcall(mx51_efikamx_power_init);
	236
e134fb2b	237	static void __init mx51_efikamx_init(void)
088d01b0 AK	238	{
	239	mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
	240	ARRAY_SIZE(mx51efikamx_pads));
7ac18a38 APR	241	efika_board_common_init();
7ac18a38 APR	242
f1dd361b	243	mx51_efikamx_board_id();
a96eb148 APR	244
a96eb148 APR	245	/* on < 1.2 boards both SD controllers are used */
9d2c0ef7	246	if (system_rev < 0x12) {
0ef51953	247	imx51_add_sdhci_esdhc_imx(1, NULL);
9d2c0ef7 APR	248	mx51_efikamx_leds[2].default_trigger = "mmc1";
	249	}
	250
	251	platform_device_register(&mx51_efikamx_leds_device);
ba8a6c04	252	imx_add_gpio_keys(&mx51_efikamx_powerkey_data);
c6e34a4c	253
c2932bf4 APR	254	if (system_rev == 0x11) {
	255	gpio_request(EFIKAMX_RESET1_1, "reset");
	256	gpio_direction_output(EFIKAMX_RESET1_1, 1);
	257	} else {
	258	gpio_request(EFIKAMX_RESET, "reset");
	259	gpio_direction_output(EFIKAMX_RESET, 1);
	260	}
9d72af6e APR	261
	262	/*
	263	* enable wifi by default only on mx
	264	* sb and mx have same wlan pin but the value to enable it are
	265	* different :/
	266	*/
	267	gpio_request(EFIKA_WLAN_EN, "wlan_en");
	268	gpio_direction_output(EFIKA_WLAN_EN, 0);
	269	msleep(10);
	270
	271	gpio_request(EFIKA_WLAN_RESET, "wlan_rst");
	272	gpio_direction_output(EFIKA_WLAN_RESET, 0);
	273	msleep(10);
	274	gpio_set_value(EFIKA_WLAN_RESET, 1);
088d01b0 AK	275	}
	276
	277	static void __init mx51_efikamx_timer_init(void)
	278	{
	279	mx51_clocks_init(32768, 24000000, 22579200, 24576000);
	280	}
	281
e134fb2b UKK	282	static struct sys_timer mx51_efikamx_timer = {
e134fb2b UKK	283	.init = mx51_efikamx_timer_init,
088d01b0 AK	284	};
	285
	286	MACHINE_START(MX51_EFIKAMX, "Genesi EfikaMX nettop")
	287	/* Maintainer: Amit Kucheria <amit.kucheria@linaro.org> */
088d01b0 AK	288	.boot_params = MX51_PHYS_OFFSET + 0x100,
088d01b0 AK	289	.map_io = mx51_map_io,
ab130421	290	.init_early = imx51_init_early,
088d01b0	291	.init_irq = mx51_init_irq,
e134fb2b UKK	292	.timer = &mx51_efikamx_timer,
e134fb2b UKK	293	.init_machine = mx51_efikamx_init,
088d01b0	294	MACHINE_END