arch/arm/mach-mx5/board-mx51_efikamx.c - kernel/mindspeed - Git at Google

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

 #include "devices-imx51.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) ? 1 : 0;
 	id |= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1;
 	id |= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 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[] __initdata = {
 	{
 		.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 const struct gpio_led_platform_data
 		mx51_efikamx_leds_data __initconst = {
 	.leds = mx51_efikamx_leds,
 	.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
 };

 static struct esdhc_platform_data sd_pdata = {
 	.cd_type = ESDHC_CD_CONTROLLER,
 	.wp_type = ESDHC_WP_CONTROLLER,
 };

 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)
 {
 	imx51_soc_init();

 	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(0, NULL);
 		imx51_add_sdhci_esdhc_imx(1, &sd_pdata);
 		mx51_efikamx_leds[2].default_trigger = "mmc1";
 	} else
 		imx51_add_sdhci_esdhc_imx(0, &sd_pdata);

 	gpio_led_register_device(-1, &mx51_efikamx_leds_data);
 	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> */
 	.atag_offset = 0x100,
 	.map_io = mx51_map_io,
 	.init_early = imx51_init_early,
 	.init_irq = mx51_init_irq,
 	.handle_irq = imx51_handle_irq,
 	.timer = &mx51_efikamx_timer,
 	.init_machine = mx51_efikamx_init,
 MACHINE_END
	/*
	* 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/setup.h>
	#include <asm/mach-types.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/time.h>

	#include "devices-imx51.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) ? 1 : 0;
	id \|= (gpio_get_value(EFIKAMX_PCBID1) ? 1 : 0) << 1;
	id \|= (gpio_get_value(EFIKAMX_PCBID2) ? 1 : 0) << 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[] __initdata = {
	{
	.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 const struct gpio_led_platform_data
	mx51_efikamx_leds_data __initconst = {
	.leds = mx51_efikamx_leds,
	.num_leds = ARRAY_SIZE(mx51_efikamx_leds),
	};

	static struct esdhc_platform_data sd_pdata = {
	.cd_type = ESDHC_CD_CONTROLLER,
	.wp_type = ESDHC_WP_CONTROLLER,
	};

	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)
	{
	imx51_soc_init();

	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(0, NULL);
	imx51_add_sdhci_esdhc_imx(1, &sd_pdata);
	mx51_efikamx_leds[2].default_trigger = "mmc1";
	} else
	imx51_add_sdhci_esdhc_imx(0, &sd_pdata);

	gpio_led_register_device(-1, &mx51_efikamx_leds_data);
	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> */
	.atag_offset = 0x100,
	.map_io = mx51_map_io,
	.init_early = imx51_init_early,
	.init_irq = mx51_init_irq,
	.handle_irq = imx51_handle_irq,
	.timer = &mx51_efikamx_timer,
	.init_machine = mx51_efikamx_init,
	MACHINE_END