4024533e60
Signed-off-by: Peter Ma <pma@mediamatech.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
228 lines
6 KiB
C
228 lines
6 KiB
C
/*
|
|
* Board-specific setup code for the ATNGW100 Network Gateway
|
|
*
|
|
* Copyright (C) 2005-2006 Atmel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/clk.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/i2c-gpio.h>
|
|
#include <linux/init.h>
|
|
#include <linux/linkage.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/types.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/atmel-mci.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/setup.h>
|
|
|
|
#include <mach/at32ap700x.h>
|
|
#include <mach/board.h>
|
|
#include <mach/init.h>
|
|
#include <mach/portmux.h>
|
|
|
|
/* Oscillator frequencies. These are board-specific */
|
|
unsigned long at32_board_osc_rates[3] = {
|
|
[0] = 32768, /* 32.768 kHz on RTC osc */
|
|
[1] = 20000000, /* 20 MHz on osc0 */
|
|
[2] = 12000000, /* 12 MHz on osc1 */
|
|
};
|
|
|
|
/* Initialized by bootloader-specific startup code. */
|
|
struct tag *bootloader_tags __initdata;
|
|
|
|
struct eth_addr {
|
|
u8 addr[6];
|
|
};
|
|
static struct eth_addr __initdata hw_addr[2];
|
|
static struct eth_platform_data __initdata eth_data[2];
|
|
|
|
static struct spi_board_info spi0_board_info[] __initdata = {
|
|
{
|
|
.modalias = "mtd_dataflash",
|
|
.max_speed_hz = 8000000,
|
|
.chip_select = 0,
|
|
},
|
|
};
|
|
|
|
static struct mci_platform_data __initdata mci0_data = {
|
|
.slot[0] = {
|
|
.bus_width = 4,
|
|
#if defined(CONFIG_BOARD_ATNGW100_EVKLCD10X) || defined(CONFIG_BOARD_ATNGW100_MRMT1)
|
|
.detect_pin = GPIO_PIN_NONE,
|
|
.wp_pin = GPIO_PIN_NONE,
|
|
#else
|
|
.detect_pin = GPIO_PIN_PC(25),
|
|
.wp_pin = GPIO_PIN_PE(0),
|
|
#endif
|
|
},
|
|
};
|
|
|
|
/*
|
|
* The next two functions should go away as the boot loader is
|
|
* supposed to initialize the macb address registers with a valid
|
|
* ethernet address. But we need to keep it around for a while until
|
|
* we can be reasonably sure the boot loader does this.
|
|
*
|
|
* The phy_id is ignored as the driver will probe for it.
|
|
*/
|
|
static int __init parse_tag_ethernet(struct tag *tag)
|
|
{
|
|
int i;
|
|
|
|
i = tag->u.ethernet.mac_index;
|
|
if (i < ARRAY_SIZE(hw_addr))
|
|
memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
|
|
sizeof(hw_addr[i].addr));
|
|
|
|
return 0;
|
|
}
|
|
__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
|
|
|
|
static void __init set_hw_addr(struct platform_device *pdev)
|
|
{
|
|
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
const u8 *addr;
|
|
void __iomem *regs;
|
|
struct clk *pclk;
|
|
|
|
if (!res)
|
|
return;
|
|
if (pdev->id >= ARRAY_SIZE(hw_addr))
|
|
return;
|
|
|
|
addr = hw_addr[pdev->id].addr;
|
|
if (!is_valid_ether_addr(addr))
|
|
return;
|
|
|
|
/*
|
|
* Since this is board-specific code, we'll cheat and use the
|
|
* physical address directly as we happen to know that it's
|
|
* the same as the virtual address.
|
|
*/
|
|
regs = (void __iomem __force *)res->start;
|
|
pclk = clk_get(&pdev->dev, "pclk");
|
|
if (!pclk)
|
|
return;
|
|
|
|
clk_enable(pclk);
|
|
__raw_writel((addr[3] << 24) | (addr[2] << 16)
|
|
| (addr[1] << 8) | addr[0], regs + 0x98);
|
|
__raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
|
|
clk_disable(pclk);
|
|
clk_put(pclk);
|
|
}
|
|
|
|
void __init setup_board(void)
|
|
{
|
|
at32_map_usart(1, 0, 0); /* USART 1: /dev/ttyS0, DB9 */
|
|
at32_setup_serial_console(0);
|
|
}
|
|
|
|
static const struct gpio_led ngw_leds[] = {
|
|
{ .name = "sys", .gpio = GPIO_PIN_PA(16), .active_low = 1,
|
|
.default_trigger = "heartbeat",
|
|
},
|
|
{ .name = "a", .gpio = GPIO_PIN_PA(19), .active_low = 1, },
|
|
{ .name = "b", .gpio = GPIO_PIN_PE(19), .active_low = 1, },
|
|
};
|
|
|
|
static const struct gpio_led_platform_data ngw_led_data = {
|
|
.num_leds = ARRAY_SIZE(ngw_leds),
|
|
.leds = (void *) ngw_leds,
|
|
};
|
|
|
|
static struct platform_device ngw_gpio_leds = {
|
|
.name = "leds-gpio",
|
|
.id = -1,
|
|
.dev = {
|
|
.platform_data = (void *) &ngw_led_data,
|
|
}
|
|
};
|
|
|
|
static struct i2c_gpio_platform_data i2c_gpio_data = {
|
|
.sda_pin = GPIO_PIN_PA(6),
|
|
.scl_pin = GPIO_PIN_PA(7),
|
|
.sda_is_open_drain = 1,
|
|
.scl_is_open_drain = 1,
|
|
.udelay = 2, /* close to 100 kHz */
|
|
};
|
|
|
|
static struct platform_device i2c_gpio_device = {
|
|
.name = "i2c-gpio",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &i2c_gpio_data,
|
|
},
|
|
};
|
|
|
|
static struct i2c_board_info __initdata i2c_info[] = {
|
|
/* NOTE: original ATtiny24 firmware is at address 0x0b */
|
|
};
|
|
|
|
static int __init atngw100_init(void)
|
|
{
|
|
unsigned i;
|
|
|
|
/*
|
|
* ATNGW100 uses 16-bit SDRAM interface, so we don't need to
|
|
* reserve any pins for it.
|
|
*/
|
|
|
|
at32_add_device_usart(0);
|
|
|
|
set_hw_addr(at32_add_device_eth(0, ð_data[0]));
|
|
set_hw_addr(at32_add_device_eth(1, ð_data[1]));
|
|
|
|
at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
|
|
at32_add_device_mci(0, &mci0_data);
|
|
at32_add_device_usba(0, NULL);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
|
|
at32_select_gpio(ngw_leds[i].gpio,
|
|
AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
|
|
}
|
|
platform_device_register(&ngw_gpio_leds);
|
|
|
|
/* all these i2c/smbus pins should have external pullups for
|
|
* open-drain sharing among all I2C devices. SDA and SCL do;
|
|
* PB28/EXTINT3 doesn't; it should be SMBALERT# (for PMBus),
|
|
* but it's not available off-board.
|
|
*/
|
|
at32_select_periph(GPIO_PIOB_BASE, 1 << 28, 0, AT32_GPIOF_PULLUP);
|
|
at32_select_gpio(i2c_gpio_data.sda_pin,
|
|
AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
|
|
at32_select_gpio(i2c_gpio_data.scl_pin,
|
|
AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
|
|
platform_device_register(&i2c_gpio_device);
|
|
i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
|
|
|
|
return 0;
|
|
}
|
|
postcore_initcall(atngw100_init);
|
|
|
|
static int __init atngw100_arch_init(void)
|
|
{
|
|
/* PB30 is the otherwise unused jumper on the mainboard, with an
|
|
* external pullup; the jumper grounds it. Use it however you
|
|
* like, including letting U-Boot or Linux tweak boot sequences.
|
|
*/
|
|
at32_select_gpio(GPIO_PIN_PB(30), 0);
|
|
gpio_request(GPIO_PIN_PB(30), "j15");
|
|
gpio_direction_input(GPIO_PIN_PB(30));
|
|
gpio_export(GPIO_PIN_PB(30), false);
|
|
|
|
/* set_irq_type() after the arch_initcall for EIC has run, and
|
|
* before the I2C subsystem could try using this IRQ.
|
|
*/
|
|
return set_irq_type(AT32_EXTINT(3), IRQ_TYPE_EDGE_FALLING);
|
|
}
|
|
arch_initcall(atngw100_arch_init);
|