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linux-next/arch/arm/mach-orion5x/edmini_v2-setup.c
Albert Aribaud 3d014b01e5 [ARM] EDMINIV2: add support for LED and power button 
This patch provides standard GPIO LED control
for the ED Mini V2, with software blinking only
(CPLD hardware blinking capability is not used).

This patch also provides status of the power
button as a standard GPIO input event.

Signed-off-by: Albert Aribaud <albert.aribaud@free.fr>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
2008-09-25 16:27:22 -04:00

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/*
* arch/arm/mach-orion5x/edmini_v2-setup.c
*
* LaCie Ethernet Disk mini V2 Setup
*
* Copyright (C) 2008 Christopher Moore <moore@free.fr>
* Copyright (C) 2008 Albert Aribaud <albert.aribaud@free.fr>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
/*
* TODO: add Orion USB device port init when kernel.org support is added.
* TODO: add flash write support: see below.
* TODO: add power-off support.
* TODO: add I2C EEPROM support.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/ata_platform.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"
/*****************************************************************************
* EDMINI_V2 Info
****************************************************************************/
/*
* 512KB NOR flash Device bus boot chip select
*/
#define EDMINI_V2_NOR_BOOT_BASE 0xfff80000
#define EDMINI_V2_NOR_BOOT_SIZE SZ_512K
/*****************************************************************************
* 512KB NOR Flash on BOOT Device
****************************************************************************/
/*
* Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
* -type device. This could cause risks of accidentally erasing critical
* flash sectors. We thus define a single, write-protected partition covering
* the whole flash.
* TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
* code, break this into at least three partitions: 'u-boot code', 'u-boot
* environment' and 'whatever is left'.
*/
static struct mtd_partition edmini_v2_partitions[] = {
{
.name = "Full512kb",
.size = 0x00080000,
.offset = 0x00000000,
.mask_flags = MTD_WRITEABLE,
},
};
static struct physmap_flash_data edmini_v2_nor_flash_data = {
.width = 1,
.parts = edmini_v2_partitions,
.nr_parts = ARRAY_SIZE(edmini_v2_partitions),
};
static struct resource edmini_v2_nor_flash_resource = {
.flags = IORESOURCE_MEM,
.start = EDMINI_V2_NOR_BOOT_BASE,
.end = EDMINI_V2_NOR_BOOT_BASE
+ EDMINI_V2_NOR_BOOT_SIZE - 1,
};
static struct platform_device edmini_v2_nor_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &edmini_v2_nor_flash_data,
},
.num_resources = 1,
.resource = &edmini_v2_nor_flash_resource,
};
/*****************************************************************************
* Ethernet
****************************************************************************/
static struct mv643xx_eth_platform_data edmini_v2_eth_data = {
.phy_addr = 8,
};
/*****************************************************************************
* RTC 5C372a on I2C bus
****************************************************************************/
#define EDMINIV2_RTC_GPIO 3
static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
I2C_BOARD_INFO("rs5c372a", 0x32),
.irq = 0,
};
/*****************************************************************************
* Sata
****************************************************************************/
static struct mv_sata_platform_data edmini_v2_sata_data = {
.n_ports = 2,
};
/*****************************************************************************
* GPIO LED (simple - doesn't use hardware blinking support)
****************************************************************************/
#define EDMINI_V2_GPIO_LED_POWER 16
static struct gpio_led edmini_v2_leds[] = {
{
.name = "power:blue",
.gpio = EDMINI_V2_GPIO_LED_POWER,
.active_low = 1,
},
};
static struct gpio_led_platform_data edmini_v2_led_data = {
.num_leds = ARRAY_SIZE(edmini_v2_leds),
.leds = edmini_v2_leds,
};
static struct platform_device edmini_v2_gpio_leds = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &edmini_v2_led_data,
},
};
/****************************************************************************
* GPIO key
****************************************************************************/
#define EDMINI_V2_GPIO_KEY_POWER 18
static struct gpio_keys_button edmini_v2_buttons[] = {
{
.code = KEY_POWER,
.gpio = EDMINI_V2_GPIO_KEY_POWER,
.desc = "Power Button",
.active_low = 0,
},
};
static struct gpio_keys_platform_data edmini_v2_button_data = {
.buttons = edmini_v2_buttons,
.nbuttons = ARRAY_SIZE(edmini_v2_buttons),
};
static struct platform_device edmini_v2_gpio_buttons = {
.name = "gpio-keys",
.id = -1,
.dev = {
.platform_data = &edmini_v2_button_data,
},
};
/*****************************************************************************
* General Setup
****************************************************************************/
static struct orion5x_mpp_mode edminiv2_mpp_modes[] __initdata = {
{ 0, MPP_UNUSED },
{ 1, MPP_UNUSED },
{ 2, MPP_UNUSED },
{ 3, MPP_GPIO }, /* RTC interrupt */
{ 4, MPP_UNUSED },
{ 5, MPP_UNUSED },
{ 6, MPP_UNUSED },
{ 7, MPP_UNUSED },
{ 8, MPP_UNUSED },
{ 9, MPP_UNUSED },
{ 10, MPP_UNUSED },
{ 11, MPP_UNUSED },
{ 12, MPP_SATA_LED }, /* SATA 0 presence */
{ 13, MPP_SATA_LED }, /* SATA 1 presence */
{ 14, MPP_SATA_LED }, /* SATA 0 active */
{ 15, MPP_SATA_LED }, /* SATA 1 active */
/* 16: Power LED control (0 = On, 1 = Off) */
{ 16, MPP_GPIO },
/* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
{ 17, MPP_GPIO },
/* 18: Power button status (0 = Released, 1 = Pressed) */
{ 18, MPP_GPIO },
{ 19, MPP_UNUSED },
{ -1 }
};
static void __init edmini_v2_init(void)
{
/*
* Setup basic Orion functions. Need to be called early.
*/
orion5x_init();
orion5x_mpp_conf(edminiv2_mpp_modes);
/*
* Configure peripherals.
*/
orion5x_ehci0_init();
orion5x_eth_init(&edmini_v2_eth_data);
orion5x_i2c_init();
orion5x_sata_init(&edmini_v2_sata_data);
orion5x_uart0_init();
orion5x_setup_dev_boot_win(EDMINI_V2_NOR_BOOT_BASE,
EDMINI_V2_NOR_BOOT_SIZE);
platform_device_register(&edmini_v2_nor_flash);
platform_device_register(&edmini_v2_gpio_leds);
platform_device_register(&edmini_v2_gpio_buttons);
pr_notice("edmini_v2: USB device port, flash write and power-off "
"are not yet supported.\n");
/* Get RTC IRQ and register the chip */
if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
else
gpio_free(EDMINIV2_RTC_GPIO);
}
if (edmini_v2_i2c_rtc.irq == 0)
pr_warning("edmini_v2: failed to get RTC IRQ\n");
i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
}
/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
MACHINE_START(EDMINI_V2, "LaCie Ethernet Disk mini V2")
/* Maintainer: Christopher Moore <moore@free.fr> */
.phys_io = ORION5X_REGS_PHYS_BASE,
.io_pg_offst = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
.boot_params = 0x00000100,
.init_machine = edmini_v2_init,
.map_io = orion5x_map_io,
.init_irq = orion5x_init_irq,
.timer = &orion5x_timer,
.fixup = tag_fixup_mem32,
MACHINE_END
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