298 lines
7.2 KiB
C
298 lines
7.2 KiB
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/fsl_devices.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 <mach/i2c.h>
|
|
#include <mach/mxc_ehci.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);
|
|
imx51_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
|