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/*
* arch/arm/mach-ep93xx/core.c
* Core routines for Cirrus EP93xx chips.
*
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
*
* Thanks go to Michael Burian and Ray Lehtiniemi for their key
* role in the ep93xx linux community.
*
* 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.
*/

#define pr_fmt(fmt) "ep93xx " KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/timex.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/leds.h>
#include <linux/termios.h>
#include <linux/amba/bus.h>
#include <linux/amba/serial.h>
#include <linux/mtd/physmap.h>
#include <linux/i2c.h>
#include <linux/i2c-gpio.h>
#include <linux/spi/spi.h>

#include <mach/hardware.h>
#include <mach/fb.h>
#include <mach/ep93xx_keypad.h>
#include <mach/ep93xx_spi.h>

#include <asm/mach/map.h>
#include <asm/mach/time.h>

#include <asm/hardware/vic.h>


/*************************************************************************
* Static I/O mappings that are needed for all EP93xx platforms
*************************************************************************/
static struct map_desc ep93xx_io_desc[] __initdata = {
{
.virtual = EP93XX_AHB_VIRT_BASE,
.pfn = __phys_to_pfn(EP93XX_AHB_PHYS_BASE),
.length = EP93XX_AHB_SIZE,
.type = MT_DEVICE,
}, {
.virtual = EP93XX_APB_VIRT_BASE,
.pfn = __phys_to_pfn(EP93XX_APB_PHYS_BASE),
.length = EP93XX_APB_SIZE,
.type = MT_DEVICE,
},
};

void __init ep93xx_map_io(void)
{
iotable_init(ep93xx_io_desc, ARRAY_SIZE(ep93xx_io_desc));
}


/*************************************************************************
* Timer handling for EP93xx
*************************************************************************
* The ep93xx has four internal timers. Timers 1, 2 (both 16 bit) and
* 3 (32 bit) count down at 508 kHz, are self-reloading, and can generate
* an interrupt on underflow. Timer 4 (40 bit) counts down at 983.04 kHz,
* is free-running, and can't generate interrupts.
*
* The 508 kHz timers are ideal for use for the timer interrupt, as the
* most common values of HZ divide 508 kHz nicely. We pick one of the 16
* bit timers (timer 1) since we don't need more than 16 bits of reload
* value as long as HZ >= 8.
*
* The higher clock rate of timer 4 makes it a better choice than the
* other timers for use in gettimeoffset(), while the fact that it can't
* generate interrupts means we don't have to worry about not being able
* to use this timer for something else. We also use timer 4 for keeping
* track of lost jiffies.
*/
#define EP93XX_TIMER_REG(x) (EP93XX_TIMER_BASE + (x))
#define EP93XX_TIMER1_LOAD EP93XX_TIMER_REG(0x00)
#define EP93XX_TIMER1_VALUE EP93XX_TIMER_REG(0x04)
#define EP93XX_TIMER1_CONTROL EP93XX_TIMER_REG(0x08)
#define EP93XX_TIMER123_CONTROL_ENABLE (1 << 7)
#define EP93XX_TIMER123_CONTROL_MODE (1 << 6)
#define EP93XX_TIMER123_CONTROL_CLKSEL (1 << 3)
#define EP93XX_TIMER1_CLEAR EP93XX_TIMER_REG(0x0c)
#define EP93XX_TIMER2_LOAD EP93XX_TIMER_REG(0x20)
#define EP93XX_TIMER2_VALUE EP93XX_TIMER_REG(0x24)
#define EP93XX_TIMER2_CONTROL EP93XX_TIMER_REG(0x28)
#define EP93XX_TIMER2_CLEAR EP93XX_TIMER_REG(0x2c)
#define EP93XX_TIMER4_VALUE_LOW EP93XX_TIMER_REG(0x60)
#define EP93XX_TIMER4_VALUE_HIGH EP93XX_TIMER_REG(0x64)
#define EP93XX_TIMER4_VALUE_HIGH_ENABLE (1 << 8)
#define EP93XX_TIMER3_LOAD EP93XX_TIMER_REG(0x80)
#define EP93XX_TIMER3_VALUE EP93XX_TIMER_REG(0x84)
#define EP93XX_TIMER3_CONTROL EP93XX_TIMER_REG(0x88)
#define EP93XX_TIMER3_CLEAR EP93XX_TIMER_REG(0x8c)

#define EP93XX_TIMER123_CLOCK 508469
#define EP93XX_TIMER4_CLOCK 983040

#define TIMER1_RELOAD ((EP93XX_TIMER123_CLOCK / HZ) - 1)
#define TIMER4_TICKS_PER_JIFFY DIV_ROUND_CLOSEST(CLOCK_TICK_RATE, HZ)

static unsigned int last_jiffy_time;

static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id)
{
/* Writing any value clears the timer interrupt */
__raw_writel(1, EP93XX_TIMER1_CLEAR);

/* Recover lost jiffies */
while ((signed long)
(__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time)
>= TIMER4_TICKS_PER_JIFFY) {
last_jiffy_time += TIMER4_TICKS_PER_JIFFY;
timer_tick();
}

return IRQ_HANDLED;
}

static struct irqaction ep93xx_timer_irq = {
.name = "ep93xx timer",
.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
.handler = ep93xx_timer_interrupt,
};

static void __init ep93xx_timer_init(void)
{
u32 tmode = EP93XX_TIMER123_CONTROL_MODE |
EP93XX_TIMER123_CONTROL_CLKSEL;

/* Enable periodic HZ timer. */
__raw_writel(tmode, EP93XX_TIMER1_CONTROL);
__raw_writel(TIMER1_RELOAD, EP93XX_TIMER1_LOAD);
__raw_writel(tmode | EP93XX_TIMER123_CONTROL_ENABLE,
EP93XX_TIMER1_CONTROL);

/* Enable lost jiffy timer. */
__raw_writel(EP93XX_TIMER4_VALUE_HIGH_ENABLE,
EP93XX_TIMER4_VALUE_HIGH);

setup_irq(IRQ_EP93XX_TIMER1, &ep93xx_timer_irq);
}

static unsigned long ep93xx_gettimeoffset(void)
{
int offset;

offset = __raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time;

/* Calculate (1000000 / 983040) * offset. */
return offset + (53 * offset / 3072);
}

struct sys_timer ep93xx_timer = {
.init = ep93xx_timer_init,
.offset = ep93xx_gettimeoffset,
};


/*************************************************************************
* EP93xx IRQ handling
*************************************************************************/
extern void ep93xx_gpio_init_irq(void);

void __init ep93xx_init_irq(void)
{
vic_init(EP93XX_VIC1_BASE, 0, EP93XX_VIC1_VALID_IRQ_MASK, 0);
vic_init(EP93XX_VIC2_BASE, 32, EP93XX_VIC2_VALID_IRQ_MASK, 0);

ep93xx_gpio_init_irq();
}


/*************************************************************************
* EP93xx System Controller Software Locked register handling
*************************************************************************/

/*
* syscon_swlock prevents anything else from writing to the syscon
* block while a software locked register is being written.
*/
static DEFINE_SPINLOCK(syscon_swlock);

void ep93xx_syscon_swlocked_write(unsigned int val, void __iomem *reg)
{
unsigned long flags;

spin_lock_irqsave(&syscon_swlock, flags);

__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(val, reg);

spin_unlock_irqrestore(&syscon_swlock, flags);
}
EXPORT_SYMBOL(ep93xx_syscon_swlocked_write);

void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits)
{
unsigned long flags;
unsigned int val;

spin_lock_irqsave(&syscon_swlock, flags);

val = __raw_readl(EP93XX_SYSCON_DEVCFG);
val &= ~clear_bits;
val |= set_bits;
__raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(val, EP93XX_SYSCON_DEVCFG);

spin_unlock_irqrestore(&syscon_swlock, flags);
}
EXPORT_SYMBOL(ep93xx_devcfg_set_clear);

/**
* ep93xx_chip_revision() - returns the EP93xx chip revision
*
* See <mach/platform.h> for more information.
*/
unsigned int ep93xx_chip_revision(void)
{
unsigned int v;

v = __raw_readl(EP93XX_SYSCON_SYSCFG);
v &= EP93XX_SYSCON_SYSCFG_REV_MASK;
v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT;
return v;
}

/*************************************************************************
* EP93xx peripheral handling
*************************************************************************/
#define EP93XX_UART_MCR_OFFSET (0x0100)

static void ep93xx_uart_set_mctrl(struct amba_device *dev,
void __iomem *base, unsigned int mctrl)
{
unsigned int mcr;

mcr = 0;
if (!(mctrl & TIOCM_RTS))
mcr |= 2;
if (!(mctrl & TIOCM_DTR))
mcr |= 1;

__raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);
}

static struct amba_pl010_data ep93xx_uart_data = {
.set_mctrl = ep93xx_uart_set_mctrl,
};

static struct amba_device uart1_device = {
.dev = {
.init_name = "apb:uart1",
.platform_data = &ep93xx_uart_data,
},
.res = {
.start = EP93XX_UART1_PHYS_BASE,
.end = EP93XX_UART1_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
},
.irq = { IRQ_EP93XX_UART1, NO_IRQ },
.periphid = 0x00041010,
};

static struct amba_device uart2_device = {
.dev = {
.init_name = "apb:uart2",
.platform_data = &ep93xx_uart_data,
},
.res = {
.start = EP93XX_UART2_PHYS_BASE,
.end = EP93XX_UART2_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
},
.irq = { IRQ_EP93XX_UART2, NO_IRQ },
.periphid = 0x00041010,
};

static struct amba_device uart3_device = {
.dev = {
.init_name = "apb:uart3",
.platform_data = &ep93xx_uart_data,
},
.res = {
.start = EP93XX_UART3_PHYS_BASE,
.end = EP93XX_UART3_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
},
.irq = { IRQ_EP93XX_UART3, NO_IRQ },
.periphid = 0x00041010,
};


static struct resource ep93xx_rtc_resource[] = {
{
.start = EP93XX_RTC_PHYS_BASE,
.end = EP93XX_RTC_PHYS_BASE + 0x10c - 1,
.flags = IORESOURCE_MEM,
},
};

static struct platform_device ep93xx_rtc_device = {
.name = "ep93xx-rtc",
.id = -1,
.num_resources = ARRAY_SIZE(ep93xx_rtc_resource),
.resource = ep93xx_rtc_resource,
};


static struct resource ep93xx_ohci_resources[] = {
[0] = {
.start = EP93XX_USB_PHYS_BASE,
.end = EP93XX_USB_PHYS_BASE + 0x0fff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_EP93XX_USB,
.end = IRQ_EP93XX_USB,
.flags = IORESOURCE_IRQ,
},
};


static struct platform_device ep93xx_ohci_device = {
.name = "ep93xx-ohci",
.id = -1,
.dev = {
.dma_mask = &ep93xx_ohci_device.dev.coherent_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(ep93xx_ohci_resources),
.resource = ep93xx_ohci_resources,
};


/*************************************************************************
* EP93xx physmap'ed flash
*************************************************************************/
static struct physmap_flash_data ep93xx_flash_data;

static struct resource ep93xx_flash_resource = {
.flags = IORESOURCE_MEM,
};

static struct platform_device ep93xx_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &ep93xx_flash_data,
},
.num_resources = 1,
.resource = &ep93xx_flash_resource,
};

/**
* ep93xx_register_flash() - Register the external flash device.
* @width: bank width in octets
* @start: resource start address
* @size: resource size
*/
void __init ep93xx_register_flash(unsigned int width,
resource_size_t start, resource_size_t size)
{
ep93xx_flash_data.width = width;

ep93xx_flash_resource.start = start;
ep93xx_flash_resource.end = start + size - 1;

platform_device_register(&ep93xx_flash);
}


/*************************************************************************
* EP93xx ethernet peripheral handling
*************************************************************************/
static struct ep93xx_eth_data ep93xx_eth_data;

static struct resource ep93xx_eth_resource[] = {
{
.start = EP93XX_ETHERNET_PHYS_BASE,
.end = EP93XX_ETHERNET_PHYS_BASE + 0xffff,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_EP93XX_ETHERNET,
.end = IRQ_EP93XX_ETHERNET,
.flags = IORESOURCE_IRQ,
}
};

static struct platform_device ep93xx_eth_device = {
.name = "ep93xx-eth",
.id = -1,
.dev = {
.platform_data = &ep93xx_eth_data,
},
.num_resources = ARRAY_SIZE(ep93xx_eth_resource),
.resource = ep93xx_eth_resource,
};

/**
* ep93xx_register_eth - Register the built-in ethernet platform device.
* @data: platform specific ethernet configuration (__initdata)
* @copy_addr: flag indicating that the MAC address should be copied
* from the IndAd registers (as programmed by the bootloader)
*/
void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr)
{
if (copy_addr)
memcpy_fromio(data->dev_addr, EP93XX_ETHERNET_BASE + 0x50, 6);

ep93xx_eth_data = *data;
platform_device_register(&ep93xx_eth_device);
}


/*************************************************************************
* EP93xx i2c peripheral handling
*************************************************************************/
static struct i2c_gpio_platform_data ep93xx_i2c_data;

static struct platform_device ep93xx_i2c_device = {
.name = "i2c-gpio",
.id = 0,
.dev = {
.platform_data = &ep93xx_i2c_data,
},
};

/**
* ep93xx_register_i2c - Register the i2c platform device.
* @data: platform specific i2c-gpio configuration (__initdata)
* @devices: platform specific i2c bus device information (__initdata)
* @num: the number of devices on the i2c bus
*/
void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data,
struct i2c_board_info *devices, int num)
{
/*
* Set the EEPROM interface pin drive type control.
* Defines the driver type for the EECLK and EEDAT pins as either
* open drain, which will require an external pull-up, or a normal
* CMOS driver.
*/
if (data->sda_is_open_drain && data->sda_pin != EP93XX_GPIO_LINE_EEDAT)
pr_warning("sda != EEDAT, open drain has no effect\n");
if (data->scl_is_open_drain && data->scl_pin != EP93XX_GPIO_LINE_EECLK)
pr_warning("scl != EECLK, open drain has no effect\n");

__raw_writel((data->sda_is_open_drain << 1) |
(data->scl_is_open_drain << 0),
EP93XX_GPIO_EEDRIVE);

ep93xx_i2c_data = *data;
i2c_register_board_info(0, devices, num);
platform_device_register(&ep93xx_i2c_device);
}

/*************************************************************************
* EP93xx SPI peripheral handling
*************************************************************************/
static struct ep93xx_spi_info ep93xx_spi_master_data;

static struct resource ep93xx_spi_resources[] = {
{
.start = EP93XX_SPI_PHYS_BASE,
.end = EP93XX_SPI_PHYS_BASE + 0x18 - 1,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_EP93XX_SSP,
.end = IRQ_EP93XX_SSP,
.flags = IORESOURCE_IRQ,
},
};

static struct platform_device ep93xx_spi_device = {
.name = "ep93xx-spi",
.id = 0,
.dev = {
.platform_data = &ep93xx_spi_master_data,
},
.num_resources = ARRAY_SIZE(ep93xx_spi_resources),
.resource = ep93xx_spi_resources,
};

/**
* ep93xx_register_spi() - registers spi platform device
* @info: ep93xx board specific spi master info (__initdata)
* @devices: SPI devices to register (__initdata)
* @num: number of SPI devices to register
*
* This function registers platform device for the EP93xx SPI controller and
* also makes sure that SPI pins are muxed so that I2S is not using those pins.
*/
void __init ep93xx_register_spi(struct ep93xx_spi_info *info,
struct spi_board_info *devices, int num)
{
/*
* When SPI is used, we need to make sure that I2S is muxed off from
* SPI pins.
*/
ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONSSP);

ep93xx_spi_master_data = *info;
spi_register_board_info(devices, num);
platform_device_register(&ep93xx_spi_device);
}

/*************************************************************************
* EP93xx LEDs
*************************************************************************/
static struct gpio_led ep93xx_led_pins[] = {
{
.name = "platform:grled",
.gpio = EP93XX_GPIO_LINE_GRLED,
}, {
.name = "platform:rdled",
.gpio = EP93XX_GPIO_LINE_RDLED,
},
};

static struct gpio_led_platform_data ep93xx_led_data = {
.num_leds = ARRAY_SIZE(ep93xx_led_pins),
.leds = ep93xx_led_pins,
};

static struct platform_device ep93xx_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &ep93xx_led_data,
},
};


/*************************************************************************
* EP93xx pwm peripheral handling
*************************************************************************/
static struct resource ep93xx_pwm0_resource[] = {
{
.start = EP93XX_PWM_PHYS_BASE,
.end = EP93XX_PWM_PHYS_BASE + 0x10 - 1,
.flags = IORESOURCE_MEM,
},
};

static struct platform_device ep93xx_pwm0_device = {
.name = "ep93xx-pwm",
.id = 0,
.num_resources = ARRAY_SIZE(ep93xx_pwm0_resource),
.resource = ep93xx_pwm0_resource,
};

static struct resource ep93xx_pwm1_resource[] = {
{
.start = EP93XX_PWM_PHYS_BASE + 0x20,
.end = EP93XX_PWM_PHYS_BASE + 0x30 - 1,
.flags = IORESOURCE_MEM,
},
};

static struct platform_device ep93xx_pwm1_device = {
.name = "ep93xx-pwm",
.id = 1,
.num_resources = ARRAY_SIZE(ep93xx_pwm1_resource),
.resource = ep93xx_pwm1_resource,
};

void __init ep93xx_register_pwm(int pwm0, int pwm1)
{
if (pwm0)
platform_device_register(&ep93xx_pwm0_device);

/* NOTE: EP9307 does not have PWMOUT1 (pin EGPIO14) */
if (pwm1)
platform_device_register(&ep93xx_pwm1_device);
}

int ep93xx_pwm_acquire_gpio(struct platform_device *pdev)
{
int err;

if (pdev->id == 0) {
err = 0;
} else if (pdev->id == 1) {
err = gpio_request(EP93XX_GPIO_LINE_EGPIO14,
dev_name(&pdev->dev));
if (err)
return err;
err = gpio_direction_output(EP93XX_GPIO_LINE_EGPIO14, 0);
if (err)
goto fail;

/* PWM 1 output on EGPIO[14] */
ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_PONG);
} else {
err = -ENODEV;
}

return err;

fail:
gpio_free(EP93XX_GPIO_LINE_EGPIO14);
return err;
}
EXPORT_SYMBOL(ep93xx_pwm_acquire_gpio);

void ep93xx_pwm_release_gpio(struct platform_device *pdev)
{
if (pdev->id == 1) {
gpio_direction_input(EP93XX_GPIO_LINE_EGPIO14);
gpio_free(EP93XX_GPIO_LINE_EGPIO14);

/* EGPIO[14] used for GPIO */
ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_PONG);
}
}
EXPORT_SYMBOL(ep93xx_pwm_release_gpio);


/*************************************************************************
* EP93xx video peripheral handling
*************************************************************************/
static struct ep93xxfb_mach_info ep93xxfb_data;

static struct resource ep93xx_fb_resource[] = {
{
.start = EP93XX_RASTER_PHYS_BASE,
.end = EP93XX_RASTER_PHYS_BASE + 0x800 - 1,
.flags = IORESOURCE_MEM,
},
};

static struct platform_device ep93xx_fb_device = {
.name = "ep93xx-fb",
.id = -1,
.dev = {
.platform_data = &ep93xxfb_data,
.coherent_dma_mask = DMA_BIT_MASK(32),
.dma_mask = &ep93xx_fb_device.dev.coherent_dma_mask,
},
.num_resources = ARRAY_SIZE(ep93xx_fb_resource),
.resource = ep93xx_fb_resource,
};

static struct platform_device ep93xx_bl_device = {
.name = "ep93xx-bl",
.id = -1,
};

/**
* ep93xx_register_fb - Register the framebuffer platform device.
* @data: platform specific framebuffer configuration (__initdata)
*/
void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data)
{
ep93xxfb_data = *data;
platform_device_register(&ep93xx_fb_device);
platform_device_register(&ep93xx_bl_device);
}


/*************************************************************************
* EP93xx matrix keypad peripheral handling
*************************************************************************/
static struct ep93xx_keypad_platform_data ep93xx_keypad_data;

static struct resource ep93xx_keypad_resource[] = {
{
.start = EP93XX_KEY_MATRIX_PHYS_BASE,
.end = EP93XX_KEY_MATRIX_PHYS_BASE + 0x0c - 1,
.flags = IORESOURCE_MEM,
}, {
.start = IRQ_EP93XX_KEY,
.end = IRQ_EP93XX_KEY,
.flags = IORESOURCE_IRQ,
},
};

static struct platform_device ep93xx_keypad_device = {
.name = "ep93xx-keypad",
.id = -1,
.dev = {
.platform_data = &ep93xx_keypad_data,
},
.num_resources = ARRAY_SIZE(ep93xx_keypad_resource),
.resource = ep93xx_keypad_resource,
};

/**
* ep93xx_register_keypad - Register the keypad platform device.
* @data: platform specific keypad configuration (__initdata)
*/
void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data)
{
ep93xx_keypad_data = *data;
platform_device_register(&ep93xx_keypad_device);
}

int ep93xx_keypad_acquire_gpio(struct platform_device *pdev)
{
int err;
int i;

for (i = 0; i < 8; i++) {
err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev));
if (err)
goto fail_gpio_c;
err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev));
if (err)
goto fail_gpio_d;
}

/* Enable the keypad controller; GPIO ports C and D used for keypad */
ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_KEYS |
EP93XX_SYSCON_DEVCFG_GONK);

return 0;

fail_gpio_d:
gpio_free(EP93XX_GPIO_LINE_C(i));
fail_gpio_c:
for ( ; i >= 0; --i) {
gpio_free(EP93XX_GPIO_LINE_C(i));
gpio_free(EP93XX_GPIO_LINE_D(i));
}
return err;
}
EXPORT_SYMBOL(ep93xx_keypad_acquire_gpio);

void ep93xx_keypad_release_gpio(struct platform_device *pdev)
{
int i;

for (i = 0; i < 8; i++) {
gpio_free(EP93XX_GPIO_LINE_C(i));
gpio_free(EP93XX_GPIO_LINE_D(i));
}

/* Disable the keypad controller; GPIO ports C and D used for GPIO */
ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS |
EP93XX_SYSCON_DEVCFG_GONK);
}
EXPORT_SYMBOL(ep93xx_keypad_release_gpio);


extern void ep93xx_gpio_init(void);

void __init ep93xx_init_devices(void)
{
/* Disallow access to MaverickCrunch initially */
ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_CPENA);

ep93xx_gpio_init();

amba_device_register(&uart1_device, &iomem_resource);
amba_device_register(&uart2_device, &iomem_resource);
amba_device_register(&uart3_device, &iomem_resource);

platform_device_register(&ep93xx_rtc_device);
platform_device_register(&ep93xx_ohci_device);
platform_device_register(&ep93xx_leds);
}
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