/*
* Copyright (C) 2007 Sascha Hauer, Pengutronix
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <environment.h>
#include <bootsource.h>
#include <partition.h>
#include <common.h>
#include <fcntl.h>
#include <gpio.h>
#include <init.h>
#include <led.h>
#include <fs.h>
#include <io.h>
#include <spi/spi.h>
#include <mfd/mc13xxx.h>
#include <mfd/mc13892.h>
#include <asm/armlinux.h>
#include <mach/imx-flash-header.h>
#include <mach/devices-imx51.h>
#include <mach/imx51-regs.h>
#include <mach/iomux-mx51.h>
#include <mach/revision.h>
#include <mach/generic.h>
#include <mach/imx5.h>
#include <mach/bbu.h>
#define GPIO_BACKLIGHT_POWER IMX_GPIO_NR(4, 12)
#define GPIO_BACKLIGHT_PWM IMX_GPIO_NR(1, 2)
#define GPIO_LVDS_POWER IMX_GPIO_NR(3, 7)
#define GPIO_LVDS_RESET IMX_GPIO_NR(3, 5)
#define GPIO_LVDS_ENABLE IMX_GPIO_NR(3, 12)
#define GPIO_LCD_ENABLE IMX_GPIO_NR(3, 13)
#define GPIO_BLUETOOTH IMX_GPIO_NR(2, 11)
#define GPIO_WIFI_ENABLE IMX_GPIO_NR(2, 16)
#define GPIO_WIFI_RESET IMX_GPIO_NR(2, 10)
#define GPIO_HUB_RESET IMX_GPIO_NR(1, 5)
#define GPIO_SMSC3317_RESET IMX_GPIO_NR(2, 9)
/*
* Generally this should work on the Efika MX smarttop aswell,
* but I do not have the hardware to test it, so hardcode this
* for the smartbook for now.
*/
static inline int machine_is_efikasb(void)
{
return 1;
}
static int efikamx_power_init(void)
{
unsigned int val;
struct mc13xxx *mc;
mc = mc13xxx_get();
if (!mc) {
printf("could not get mc13892\n");
return -ENODEV;
}
/* Write needed to Power Gate 2 register */
mc13xxx_reg_read(mc, MC13892_REG_POWER_MISC, &val);
val &= ~MC13892_POWER_MISC_PWGT2SPIEN;
mc13xxx_reg_write(mc, MC13892_REG_POWER_MISC, val);
/* Externally powered */
mc13xxx_reg_read(mc, MC13892_REG_CHARGE, &val);
val |= MC13782_CHARGE_ICHRG0 | MC13782_CHARGE_ICHRG1 |
MC13782_CHARGE_ICHRG2 | MC13782_CHARGE_ICHRG3 |
MC13782_CHARGE_CHGAUTOB;
mc13xxx_reg_write(mc, MC13892_REG_CHARGE, val);
/* power up the system first */
mc13xxx_reg_write(mc, MC13892_REG_POWER_MISC,
MC13892_POWER_MISC_PWUP);
/* Set core voltage to 1.1V */
mc13xxx_reg_read(mc, MC13892_REG_SW_0, &val);
val &= ~MC13892_SWx_SWx_VOLT_MASK;
val |= MC13892_SWx_SWx_1_100V;
mc13xxx_reg_write(mc, MC13892_REG_SW_0, val);
/* Setup VCC (SW2) to 1.25 */
mc13xxx_reg_read(mc, MC13892_REG_SW_1, &val);
val &= ~MC13892_SWx_SWx_VOLT_MASK;
val |= MC13892_SWx_SWx_1_250V;
mc13xxx_reg_write(mc, MC13892_REG_SW_1, val);
/* Setup 1V2_DIG1 (SW3) to 1.25 */
mc13xxx_reg_read(mc, MC13892_REG_SW_2, &val);
val &= ~MC13892_SWx_SWx_VOLT_MASK;
val |= MC13892_SWx_SWx_1_250V;
mc13xxx_reg_write(mc, MC13892_REG_SW_2, val);
udelay(50);
/* Set switchers in Auto in NORMAL mode & STANDBY mode */
/* Setup the switcher mode for SW1 & SW2*/
mc13xxx_reg_read(mc, MC13892_REG_SW_4, &val);
val = (val & ~((MC13892_SWMODE_MASK << MC13892_SWMODE1_SHIFT) |
(MC13892_SWMODE_MASK << MC13892_SWMODE2_SHIFT)));
val |= (MC13892_SWMODE_AUTO_AUTO << MC13892_SWMODE1_SHIFT) |
(MC13892_SWMODE_AUTO_AUTO << MC13892_SWMODE2_SHIFT);
mc13xxx_reg_write(mc, MC13892_REG_SW_4, val);
/* Setup the switcher mode for SW3 & SW4 */
mc13xxx_reg_read(mc, MC13892_REG_SW_5, &val);
val = (val & ~((MC13892_SWMODE_MASK << MC13892_SWMODE3_SHIFT) |
(MC13892_SWMODE_MASK << MC13892_SWMODE4_SHIFT)));
val |= (MC13892_SWMODE_AUTO_AUTO << MC13892_SWMODE3_SHIFT) |
(MC13892_SWMODE_AUTO_AUTO << MC13892_SWMODE4_SHIFT);
mc13xxx_reg_write(mc, MC13892_REG_SW_5, val);
/* Set VDIG to 1.8V, VGEN3 to 1.8V, VCAM to 2.6V */
mc13xxx_reg_read(mc, MC13892_REG_SETTING_0, &val);
val &= ~(MC13892_SETTING_0_VCAM_MASK |
MC13892_SETTING_0_VGEN3_MASK |
MC13892_SETTING_0_VDIG_MASK);
val |= MC13892_SETTING_0_VDIG_1_8 |
MC13892_SETTING_0_VGEN3_1_8 |
MC13892_SETTING_0_VCAM_2_6;
mc13xxx_reg_write(mc, MC13892_REG_SETTING_0, val);
/* Set VVIDEO to 2.775V, VAUDIO to 3V, VSD to 3.15V */
mc13xxx_reg_read(mc, MC13892_REG_SETTING_1, &val);
val &= ~(MC13892_SETTING_1_VVIDEO_MASK |
MC13892_SETTING_1_VSD_MASK |
MC13892_SETTING_1_VAUDIO_MASK);
val |= MC13892_SETTING_1_VSD_3_15 |
MC13892_SETTING_1_VAUDIO_3_0 |
MC13892_SETTING_1_VVIDEO_2_775 |
MC13892_SETTING_1_VGEN1_1_2 |
MC13892_SETTING_1_VGEN2_3_15;
mc13xxx_reg_write(mc, MC13892_REG_SETTING_1, val);
/* Enable VGEN1, VGEN2, VDIG, VPLL */
mc13xxx_reg_read(mc, MC13892_REG_MODE_0, &val);
val |= MC13892_MODE_0_VGEN1EN |
MC13892_MODE_0_VDIGEN |
MC13892_MODE_0_VGEN2EN |
MC13892_MODE_0_VPLLEN;
mc13xxx_reg_write(mc, MC13892_REG_MODE_0, val);
/* Configure VGEN3 and VCAM regulators to use external PNP */
val = MC13892_MODE_1_VGEN3CONFIG |
MC13892_MODE_1_VCAMCONFIG;
mc13xxx_reg_write(mc, MC13892_REG_MODE_1, val);
udelay(200);
/* Enable VGEN3, VCAM, VAUDIO, VVIDEO, VSD regulators */
val = MC13892_MODE_1_VGEN3EN |
MC13892_MODE_1_VGEN3CONFIG |
MC13892_MODE_1_VCAMEN |
MC13892_MODE_1_VCAMCONFIG |
MC13892_MODE_1_VVIDEOEN |
MC13892_MODE_1_VAUDIOEN |
MC13892_MODE_1_VSDEN;
mc13xxx_reg_write(mc, MC13892_REG_MODE_1, val);
mc13xxx_reg_read(mc, MC13892_REG_POWER_CTL2, &val);
val |= MC13892_POWER_CONTROL_2_WDIRESET;
mc13xxx_reg_write(mc, MC13892_REG_POWER_CTL2, val);
udelay(2500);
return 0;
}
static int efikamx_usb_init(void)
{
if (!of_machine_is_compatible("genesi,imx51-sb"))
return 0;
gpio_direction_output(GPIO_BLUETOOTH, 0);
gpio_direction_output(GPIO_WIFI_ENABLE, 1);
gpio_direction_output(GPIO_WIFI_RESET, 0);
gpio_direction_output(GPIO_SMSC3317_RESET, 0);
gpio_direction_output(GPIO_HUB_RESET, 0);
mdelay(10);
gpio_set_value(GPIO_HUB_RESET, 1);
gpio_set_value(GPIO_SMSC3317_RESET, 1);
gpio_set_value(GPIO_BLUETOOTH, 1);
gpio_set_value(GPIO_WIFI_RESET, 1);
mxc_iomux_v3_setup_pad(MX51_PAD_USBH1_STP__GPIO1_27);
gpio_set_value(IMX_GPIO_NR(1, 27), 1);
mdelay(1);
mxc_iomux_v3_setup_pad(MX51_PAD_USBH1_STP__USBH1_STP);
if (machine_is_efikasb()) {
mxc_iomux_v3_setup_pad(MX51_PAD_EIM_A26__GPIO2_20);
gpio_set_value(IMX_GPIO_NR(2, 20), 1);
mdelay(1);
mxc_iomux_v3_setup_pad(MX51_PAD_EIM_A26__USBH2_STP);
}
switch (bootsource_get()) {
case BOOTSOURCE_MMC:
of_device_enable_path("/chosen/environment-sd");
break;
case BOOTSOURCE_SPI:
default:
of_device_enable_path("/chosen/environment-spi");
break;
}
return 0;
}
console_initcall(efikamx_usb_init);
static struct gpio_led leds[] = {
{
.gpio = IMX_GPIO_NR(1, 3),
.active_low = 1,
.led.name = "mail",
}, {
.gpio = IMX_GPIO_NR(2, 25),
.led.name = "white",
},
};
extern char flash_header_imx51_genesi_efikasb_start[];
extern char flash_header_imx51_genesi_efikasb_end[];
static int efikamx_late_init(void)
{
int i;
if (!of_machine_is_compatible("genesi,imx51-sb"))
return 0;
efikamx_power_init();
gpio_direction_output(GPIO_BACKLIGHT_POWER, 1);
for (i = 0; i < ARRAY_SIZE(leds); i++)
led_gpio_register(&leds[i]);
writew(0x0, MX51_WDOG_BASE_ADDR + 0x8);
imx51_bbu_internal_mmc_register_handler("mmc", "/dev/mmc1",
BBU_HANDLER_FLAG_DEFAULT,
(void *)flash_header_imx51_genesi_efikasb_start,
flash_header_imx51_genesi_efikasb_end -
flash_header_imx51_genesi_efikasb_start, 0);
armlinux_set_bootparams((void *)0x90000100);
armlinux_set_architecture(2370);
armlinux_set_revision(0x5100 | imx_silicon_revision());
return 0;
}
late_initcall(efikamx_late_init);
